Mercurial > projects > ldc
annotate dmd/statement.c @ 148:86d3bb8ca33e trunk
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
author | ChristianK |
---|---|
date | Sat, 22 Mar 2008 12:20:32 +0100 |
parents | 8f704cb9969b |
children | 5acec6b2eef8 |
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 <stdlib.h> | |
13 #include <assert.h> | |
14 | |
15 #include "mem.h" | |
16 | |
17 #include "statement.h" | |
18 #include "expression.h" | |
19 #include "cond.h" | |
20 #include "init.h" | |
21 #include "staticassert.h" | |
22 #include "mtype.h" | |
23 #include "scope.h" | |
24 #include "declaration.h" | |
25 #include "aggregate.h" | |
26 #include "id.h" | |
27 #include "hdrgen.h" | |
28 #include "parse.h" | |
29 | |
30 /******************************** Statement ***************************/ | |
31 | |
32 Statement::Statement(Loc loc) | |
33 : loc(loc) | |
34 { | |
35 #ifdef _DH | |
36 // If this is an in{} contract scope statement (skip for determining | |
37 // inlineStatus of a function body for header content) | |
38 incontract = 0; | |
39 #endif | |
40 } | |
41 | |
42 Statement *Statement::syntaxCopy() | |
43 { | |
44 assert(0); | |
45 return NULL; | |
46 } | |
47 | |
48 void Statement::print() | |
49 { | |
50 fprintf(stdmsg, "%s\n", toChars()); | |
51 fflush(stdmsg); | |
52 } | |
53 | |
54 char *Statement::toChars() | |
55 { OutBuffer *buf; | |
56 HdrGenState hgs; | |
57 | |
58 buf = new OutBuffer(); | |
59 toCBuffer(buf, &hgs); | |
60 return buf->toChars(); | |
61 } | |
62 | |
63 void Statement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
64 { | |
65 buf->printf("Statement::toCBuffer()"); | |
66 buf->writenl(); | |
67 } | |
68 | |
69 Statement *Statement::semantic(Scope *sc) | |
70 { | |
71 return this; | |
72 } | |
73 | |
74 // Same as semantic(), but do create a new scope | |
75 | |
76 Statement *Statement::semanticScope(Scope *sc, Statement *sbreak, Statement *scontinue) | |
77 { Scope *scd; | |
78 Statement *s; | |
79 | |
80 scd = sc->push(); | |
81 if (sbreak) | |
82 scd->sbreak = sbreak; | |
83 if (scontinue) | |
84 scd->scontinue = scontinue; | |
85 s = semantic(scd); | |
86 scd->pop(); | |
87 return s; | |
88 } | |
89 | |
90 void Statement::error(const char *format, ...) | |
91 { | |
92 va_list ap; | |
93 va_start(ap, format); | |
94 ::verror(loc, format, ap); | |
95 va_end( ap ); | |
96 } | |
97 | |
98 int Statement::hasBreak() | |
99 { | |
100 //printf("Statement::hasBreak()\n"); | |
101 return FALSE; | |
102 } | |
103 | |
104 int Statement::hasContinue() | |
105 { | |
106 return FALSE; | |
107 } | |
108 | |
109 // TRUE if statement uses exception handling | |
110 | |
111 int Statement::usesEH() | |
112 { | |
113 return FALSE; | |
114 } | |
115 | |
116 // TRUE if statement may fall off the end without a throw or return | |
117 | |
118 int Statement::fallOffEnd() | |
119 { | |
120 return TRUE; | |
121 } | |
122 | |
123 // TRUE if statement 'comes from' somewhere else, like a goto | |
124 | |
125 int Statement::comeFrom() | |
126 { | |
127 //printf("Statement::comeFrom()\n"); | |
128 return FALSE; | |
129 } | |
130 | |
131 /**************************************** | |
132 * If this statement has code that needs to run in a finally clause | |
133 * at the end of the current scope, return that code in the form of | |
134 * a Statement. | |
135 * Output: | |
136 * *sentry code executed upon entry to the scope | |
137 * *sexception code executed upon exit from the scope via exception | |
138 * *sfinally code executed in finally block | |
139 */ | |
140 | |
141 void Statement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
142 { | |
143 //printf("Statement::scopeCode()\n"); | |
144 //print(); | |
145 *sentry = NULL; | |
146 *sexception = NULL; | |
147 *sfinally = NULL; | |
148 } | |
149 | |
150 /********************************* | |
151 * Flatten out the scope by presenting the statement | |
152 * as an array of statements. | |
153 * Returns NULL if no flattening necessary. | |
154 */ | |
155 | |
156 Statements *Statement::flatten(Scope *sc) | |
157 { | |
158 return NULL; | |
159 } | |
160 | |
161 | |
162 /******************************** ExpStatement ***************************/ | |
163 | |
164 ExpStatement::ExpStatement(Loc loc, Expression *exp) | |
165 : Statement(loc) | |
166 { | |
167 this->exp = exp; | |
168 } | |
169 | |
170 Statement *ExpStatement::syntaxCopy() | |
171 { | |
172 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
173 ExpStatement *es = new ExpStatement(loc, e); | |
174 return es; | |
175 } | |
176 | |
177 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
178 { | |
179 if (exp) | |
180 exp->toCBuffer(buf, hgs); | |
181 buf->writeByte(';'); | |
182 if (!hgs->FLinit.init) | |
183 buf->writenl(); | |
184 } | |
185 | |
186 Statement *ExpStatement::semantic(Scope *sc) | |
187 { | |
188 if (exp) | |
189 { | |
190 //printf("ExpStatement::semantic() %s\n", exp->toChars()); | |
191 exp = exp->semantic(sc); | |
192 exp = resolveProperties(sc, exp); | |
193 exp->checkSideEffect(0); | |
194 exp = exp->optimize(0); | |
195 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0); | |
196 } | |
197 return this; | |
198 } | |
199 | |
200 int ExpStatement::fallOffEnd() | |
201 { | |
202 if (exp) | |
203 { | |
204 if (exp->op == TOKassert) | |
205 { AssertExp *a = (AssertExp *)exp; | |
206 | |
207 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
208 return FALSE; | |
209 } | |
210 else if (exp->op == TOKhalt) | |
211 return FALSE; | |
212 } | |
213 return TRUE; | |
214 } | |
215 | |
216 /******************************** CompileStatement ***************************/ | |
217 | |
218 CompileStatement::CompileStatement(Loc loc, Expression *exp) | |
219 : Statement(loc) | |
220 { | |
221 this->exp = exp; | |
222 } | |
223 | |
224 Statement *CompileStatement::syntaxCopy() | |
225 { | |
226 Expression *e = exp->syntaxCopy(); | |
227 CompileStatement *es = new CompileStatement(loc, e); | |
228 return es; | |
229 } | |
230 | |
231 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
232 { | |
233 buf->writestring("mixin("); | |
234 exp->toCBuffer(buf, hgs); | |
235 buf->writestring(");"); | |
236 if (!hgs->FLinit.init) | |
237 buf->writenl(); | |
238 } | |
239 | |
240 Statement *CompileStatement::semantic(Scope *sc) | |
241 { | |
242 //printf("CompileStatement::semantic() %s\n", exp->toChars()); | |
243 exp = exp->semantic(sc); | |
244 exp = resolveProperties(sc, exp); | |
245 exp = exp->optimize(WANTvalue | WANTinterpret); | |
246 if (exp->op != TOKstring) | |
247 { error("argument to mixin must be a string, not (%s)", exp->toChars()); | |
248 return this; | |
249 } | |
250 StringExp *se = (StringExp *)exp; | |
251 se = se->toUTF8(sc); | |
252 Parser p(sc->module, (unsigned char *)se->string, se->len, 0); | |
253 p.loc = loc; | |
254 p.nextToken(); | |
255 | |
256 Statements *statements = new Statements(); | |
257 while (p.token.value != TOKeof) | |
258 { | |
259 Statement *s = p.parseStatement(PSsemi | PScurlyscope); | |
260 statements->push(s); | |
261 } | |
262 | |
263 Statement *s = new CompoundStatement(loc, statements); | |
264 return s->semantic(sc); | |
265 } | |
266 | |
267 | |
268 /******************************** DeclarationStatement ***************************/ | |
269 | |
270 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration) | |
271 : ExpStatement(loc, new DeclarationExp(loc, declaration)) | |
272 { | |
273 } | |
274 | |
275 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp) | |
276 : ExpStatement(loc, exp) | |
277 { | |
278 } | |
279 | |
280 Statement *DeclarationStatement::syntaxCopy() | |
281 { | |
282 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy()); | |
283 return ds; | |
284 } | |
285 | |
286 void DeclarationStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
287 { | |
288 //printf("DeclarationStatement::scopeCode()\n"); | |
289 //print(); | |
290 | |
291 *sentry = NULL; | |
292 *sexception = NULL; | |
293 *sfinally = NULL; | |
294 | |
295 if (exp) | |
296 { | |
297 if (exp->op == TOKdeclaration) | |
298 { | |
299 DeclarationExp *de = (DeclarationExp *)(exp); | |
300 VarDeclaration *v = de->declaration->isVarDeclaration(); | |
301 if (v) | |
302 { Expression *e; | |
303 | |
304 e = v->callAutoDtor(); | |
305 if (e) | |
306 { | |
307 //printf("dtor is: "); e->print(); | |
308 *sfinally = new ExpStatement(loc, e); | |
309 } | |
310 } | |
311 } | |
312 } | |
313 } | |
314 | |
315 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
316 { | |
317 exp->toCBuffer(buf, hgs); | |
318 } | |
319 | |
320 | |
321 /******************************** CompoundStatement ***************************/ | |
322 | |
323 CompoundStatement::CompoundStatement(Loc loc, Statements *s) | |
324 : Statement(loc) | |
325 { | |
326 statements = s; | |
327 } | |
328 | |
329 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2) | |
330 : Statement(loc) | |
331 { | |
332 statements = new Statements(); | |
333 statements->reserve(2); | |
334 statements->push(s1); | |
335 statements->push(s2); | |
336 } | |
337 | |
338 Statement *CompoundStatement::syntaxCopy() | |
339 { | |
340 Statements *a = new Statements(); | |
341 a->setDim(statements->dim); | |
342 for (size_t i = 0; i < statements->dim; i++) | |
343 { Statement *s = (Statement *)statements->data[i]; | |
344 if (s) | |
345 s = s->syntaxCopy(); | |
346 a->data[i] = s; | |
347 } | |
348 CompoundStatement *cs = new CompoundStatement(loc, a); | |
349 return cs; | |
350 } | |
351 | |
352 | |
353 Statement *CompoundStatement::semantic(Scope *sc) | |
354 { Statement *s; | |
355 | |
356 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
357 | |
358 for (size_t i = 0; i < statements->dim; ) | |
359 { | |
360 s = (Statement *) statements->data[i]; | |
361 if (s) | |
362 { Statements *a = s->flatten(sc); | |
363 | |
364 if (a) | |
365 { | |
366 statements->remove(i); | |
367 statements->insert(i, a); | |
368 continue; | |
369 } | |
370 s = s->semantic(sc); | |
371 statements->data[i] = s; | |
372 if (s) | |
373 { | |
374 Statement *sentry; | |
375 Statement *sexception; | |
376 Statement *sfinally; | |
377 | |
378 s->scopeCode(&sentry, &sexception, &sfinally); | |
379 if (sentry) | |
380 { | |
381 sentry = sentry->semantic(sc); | |
382 statements->data[i] = sentry; | |
383 } | |
384 if (sexception) | |
385 { | |
386 if (i + 1 == statements->dim && !sfinally) | |
387 { | |
388 #if 1 | |
389 sexception = sexception->semantic(sc); | |
390 #else | |
391 statements->push(sexception); | |
392 if (sfinally) | |
393 // Assume sexception does not throw | |
394 statements->push(sfinally); | |
395 #endif | |
396 } | |
397 else | |
398 { | |
399 /* Rewrite: | |
400 * s; s1; s2; | |
401 * As: | |
402 * s; | |
403 * try { s1; s2; } | |
404 * catch (Object __o) | |
405 * { sexception; throw __o; } | |
406 */ | |
407 Statement *body; | |
408 Statements *a = new Statements(); | |
409 | |
410 for (int j = i + 1; j < statements->dim; j++) | |
411 { | |
412 a->push(statements->data[j]); | |
413 } | |
414 body = new CompoundStatement(0, a); | |
415 body = new ScopeStatement(0, body); | |
416 | |
417 static int num; | |
418 char name[3 + sizeof(num) * 3 + 1]; | |
419 sprintf(name, "__o%d", ++num); | |
420 Identifier *id = Lexer::idPool(name); | |
421 | |
422 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id)); | |
423 handler = new CompoundStatement(0, sexception, handler); | |
424 | |
425 Array *catches = new Array(); | |
426 Catch *ctch = new Catch(0, NULL, id, handler); | |
427 catches->push(ctch); | |
428 s = new TryCatchStatement(0, body, catches); | |
429 | |
430 if (sfinally) | |
431 s = new TryFinallyStatement(0, s, sfinally); | |
432 s = s->semantic(sc); | |
433 statements->setDim(i + 1); | |
434 statements->push(s); | |
435 break; | |
436 } | |
437 } | |
438 else if (sfinally) | |
439 { | |
440 if (0 && i + 1 == statements->dim) | |
441 { | |
442 statements->push(sfinally); | |
443 } | |
444 else | |
445 { | |
446 /* Rewrite: | |
447 * s; s1; s2; | |
448 * As: | |
449 * s; try { s1; s2; } finally { sfinally; } | |
450 */ | |
451 Statement *body; | |
452 Statements *a = new Statements(); | |
453 | |
454 for (int j = i + 1; j < statements->dim; j++) | |
455 { | |
456 a->push(statements->data[j]); | |
457 } | |
458 body = new CompoundStatement(0, a); | |
459 s = new TryFinallyStatement(0, body, sfinally); | |
460 s = s->semantic(sc); | |
461 statements->setDim(i + 1); | |
462 statements->push(s); | |
463 break; | |
464 } | |
465 } | |
466 } | |
467 } | |
468 i++; | |
469 } | |
470 if (statements->dim == 1) | |
471 return s; | |
472 return this; | |
473 } | |
474 | |
475 Statements *CompoundStatement::flatten(Scope *sc) | |
476 { | |
477 return statements; | |
478 } | |
479 | |
480 ReturnStatement *CompoundStatement::isReturnStatement() | |
481 { int i; | |
482 ReturnStatement *rs = NULL; | |
483 | |
484 for (i = 0; i < statements->dim; i++) | |
485 { Statement *s; | |
486 | |
487 s = (Statement *) statements->data[i]; | |
488 if (s) | |
489 { | |
490 rs = s->isReturnStatement(); | |
491 if (rs) | |
492 break; | |
493 } | |
494 } | |
495 return rs; | |
496 } | |
497 | |
498 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
499 { int i; | |
500 | |
501 for (i = 0; i < statements->dim; i++) | |
502 { Statement *s; | |
503 | |
504 s = (Statement *) statements->data[i]; | |
505 if (s) | |
506 s->toCBuffer(buf, hgs); | |
507 } | |
508 } | |
509 | |
510 int CompoundStatement::usesEH() | |
511 { | |
512 for (int i = 0; i < statements->dim; i++) | |
513 { Statement *s; | |
514 | |
515 s = (Statement *) statements->data[i]; | |
516 if (s && s->usesEH()) | |
517 return TRUE; | |
518 } | |
519 return FALSE; | |
520 } | |
521 | |
522 int CompoundStatement::fallOffEnd() | |
523 { int falloff = TRUE; | |
524 | |
525 //printf("CompoundStatement::fallOffEnd()\n"); | |
526 for (int i = 0; i < statements->dim; i++) | |
527 { Statement *s = (Statement *)statements->data[i]; | |
528 | |
529 if (!s) | |
530 continue; | |
531 | |
532 if (!falloff && global.params.warnings && !s->comeFrom()) | |
533 { | |
534 fprintf(stdmsg, "warning - "); | |
535 s->error("statement is not reachable"); | |
536 } | |
537 falloff = s->fallOffEnd(); | |
538 } | |
539 return falloff; | |
540 } | |
541 | |
542 int CompoundStatement::comeFrom() | |
543 { int comefrom = FALSE; | |
544 | |
545 //printf("CompoundStatement::comeFrom()\n"); | |
546 for (int i = 0; i < statements->dim; i++) | |
547 { Statement *s = (Statement *)statements->data[i]; | |
548 | |
549 if (!s) | |
550 continue; | |
551 | |
552 comefrom |= s->comeFrom(); | |
553 } | |
554 return comefrom; | |
555 } | |
556 | |
557 | |
558 /**************************** UnrolledLoopStatement ***************************/ | |
559 | |
560 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s) | |
561 : Statement(loc) | |
562 { | |
563 statements = s; | |
148
86d3bb8ca33e
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
ChristianK
parents:
145
diff
changeset
|
564 enclosingtryfinally = NULL; |
1 | 565 } |
566 | |
567 Statement *UnrolledLoopStatement::syntaxCopy() | |
568 { | |
569 Statements *a = new Statements(); | |
570 a->setDim(statements->dim); | |
571 for (size_t i = 0; i < statements->dim; i++) | |
572 { Statement *s = (Statement *)statements->data[i]; | |
573 if (s) | |
574 s = s->syntaxCopy(); | |
575 a->data[i] = s; | |
576 } | |
577 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
578 return cs; | |
579 } | |
580 | |
581 | |
582 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
583 { | |
584 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
585 | |
148
86d3bb8ca33e
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
ChristianK
parents:
145
diff
changeset
|
586 enclosingtryfinally = sc->tfOfTry; |
145
8f704cb9969b
[svn r150] fixes #16 and #17, implements GotoCaseStatement
ChristianK
parents:
144
diff
changeset
|
587 |
1 | 588 sc->noctor++; |
589 Scope *scd = sc->push(); | |
590 scd->sbreak = this; | |
591 scd->scontinue = this; | |
592 | |
593 for (size_t i = 0; i < statements->dim; i++) | |
594 { | |
595 Statement *s = (Statement *) statements->data[i]; | |
596 if (s) | |
597 { | |
598 s = s->semantic(scd); | |
599 statements->data[i] = s; | |
600 } | |
601 } | |
602 | |
603 scd->pop(); | |
604 sc->noctor--; | |
605 return this; | |
606 } | |
607 | |
608 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
609 { | |
610 buf->writestring("unrolled {"); | |
611 buf->writenl(); | |
612 | |
613 for (size_t i = 0; i < statements->dim; i++) | |
614 { Statement *s; | |
615 | |
616 s = (Statement *) statements->data[i]; | |
617 if (s) | |
618 s->toCBuffer(buf, hgs); | |
619 } | |
620 | |
621 buf->writeByte('}'); | |
622 buf->writenl(); | |
623 } | |
624 | |
625 int UnrolledLoopStatement::hasBreak() | |
626 { | |
627 return TRUE; | |
628 } | |
629 | |
630 int UnrolledLoopStatement::hasContinue() | |
631 { | |
632 return TRUE; | |
633 } | |
634 | |
635 int UnrolledLoopStatement::usesEH() | |
636 { | |
637 for (size_t i = 0; i < statements->dim; i++) | |
638 { Statement *s; | |
639 | |
640 s = (Statement *) statements->data[i]; | |
641 if (s && s->usesEH()) | |
642 return TRUE; | |
643 } | |
644 return FALSE; | |
645 } | |
646 | |
647 int UnrolledLoopStatement::fallOffEnd() | |
92 | 648 { |
1 | 649 //printf("UnrolledLoopStatement::fallOffEnd()\n"); |
650 for (size_t i = 0; i < statements->dim; i++) | |
651 { Statement *s = (Statement *)statements->data[i]; | |
652 | |
92 | 653 if (s) |
654 s->fallOffEnd(); | |
1 | 655 } |
92 | 656 return TRUE; |
1 | 657 } |
658 | |
92 | 659 |
1 | 660 int UnrolledLoopStatement::comeFrom() |
661 { int comefrom = FALSE; | |
662 | |
663 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
664 for (size_t i = 0; i < statements->dim; i++) | |
665 { Statement *s = (Statement *)statements->data[i]; | |
666 | |
667 if (!s) | |
668 continue; | |
669 | |
670 comefrom |= s->comeFrom(); | |
671 } | |
672 return comefrom; | |
673 } | |
674 | |
675 | |
676 /******************************** ScopeStatement ***************************/ | |
677 | |
678 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
679 : Statement(loc) | |
680 { | |
681 this->statement = s; | |
682 } | |
683 | |
684 Statement *ScopeStatement::syntaxCopy() | |
685 { | |
686 Statement *s; | |
687 | |
688 s = statement ? statement->syntaxCopy() : NULL; | |
689 s = new ScopeStatement(loc, s); | |
690 return s; | |
691 } | |
692 | |
693 | |
694 Statement *ScopeStatement::semantic(Scope *sc) | |
695 { ScopeDsymbol *sym; | |
696 | |
697 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
698 if (statement) | |
699 { Statements *a; | |
700 | |
701 sym = new ScopeDsymbol(); | |
702 sym->parent = sc->scopesym; | |
703 sc = sc->push(sym); | |
704 | |
705 a = statement->flatten(sc); | |
706 if (a) | |
707 { | |
708 statement = new CompoundStatement(loc, a); | |
709 } | |
710 | |
711 statement = statement->semantic(sc); | |
712 if (statement) | |
713 { | |
714 Statement *sentry; | |
715 Statement *sexception; | |
716 Statement *sfinally; | |
717 | |
718 statement->scopeCode(&sentry, &sexception, &sfinally); | |
719 if (sfinally) | |
720 { | |
721 //printf("adding sfinally\n"); | |
722 statement = new CompoundStatement(loc, statement, sfinally); | |
723 } | |
724 } | |
725 | |
726 sc->pop(); | |
727 } | |
728 return this; | |
729 } | |
730 | |
731 int ScopeStatement::hasBreak() | |
732 { | |
733 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
734 return statement ? statement->hasBreak() : FALSE; | |
735 } | |
736 | |
737 int ScopeStatement::hasContinue() | |
738 { | |
739 return statement ? statement->hasContinue() : FALSE; | |
740 } | |
741 | |
742 int ScopeStatement::usesEH() | |
743 { | |
744 return statement ? statement->usesEH() : FALSE; | |
745 } | |
746 | |
747 int ScopeStatement::fallOffEnd() | |
748 { | |
749 return statement ? statement->fallOffEnd() : TRUE; | |
750 } | |
751 | |
752 int ScopeStatement::comeFrom() | |
753 { | |
754 //printf("ScopeStatement::comeFrom()\n"); | |
755 return statement ? statement->comeFrom() : FALSE; | |
756 } | |
757 | |
758 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
759 { | |
760 buf->writeByte('{'); | |
761 buf->writenl(); | |
762 | |
763 if (statement) | |
764 statement->toCBuffer(buf, hgs); | |
765 | |
766 buf->writeByte('}'); | |
767 buf->writenl(); | |
768 } | |
769 | |
770 /******************************** WhileStatement ***************************/ | |
771 | |
772 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
773 : Statement(loc) | |
774 { | |
775 condition = c; | |
776 body = b; | |
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777 enclosingtryfinally = NULL; |
1 | 778 } |
779 | |
780 Statement *WhileStatement::syntaxCopy() | |
781 { | |
782 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
783 return s; | |
784 } | |
785 | |
786 | |
787 Statement *WhileStatement::semantic(Scope *sc) | |
788 { | |
789 #if 0 | |
790 if (condition->op == TOKmatch) | |
791 { | |
792 /* Rewrite while (condition) body as: | |
793 * if (condition) | |
794 * do | |
795 * body | |
796 * while ((_match = _match.opNext), _match); | |
797 */ | |
798 | |
799 Expression *ew = new IdentifierExp(0, Id::_match); | |
800 ew = new DotIdExp(0, ew, Id::next); | |
801 ew = new AssignExp(0, new IdentifierExp(0, Id::_match), ew); | |
802 ////ew = new EqualExp(TOKnotequal, 0, ew, new NullExp(0)); | |
803 Expression *ev = new IdentifierExp(0, Id::_match); | |
804 //ev = new CastExp(0, ev, Type::tvoidptr); | |
805 ew = new CommaExp(0, ew, ev); | |
806 Statement *sw = new DoStatement(loc, body, ew); | |
807 Statement *si = new IfStatement(loc, condition, sw, NULL); | |
808 return si->semantic(sc); | |
809 } | |
810 #endif | |
811 | |
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812 enclosingtryfinally = sc->tfOfTry; |
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813 |
1 | 814 condition = condition->semantic(sc); |
815 condition = resolveProperties(sc, condition); | |
816 condition = condition->optimize(WANTvalue); | |
817 condition = condition->checkToBoolean(); | |
818 | |
819 sc->noctor++; | |
820 | |
821 Scope *scd = sc->push(); | |
822 scd->sbreak = this; | |
823 scd->scontinue = this; | |
824 if (body) | |
825 body = body->semantic(scd); | |
826 scd->pop(); | |
827 | |
828 sc->noctor--; | |
829 | |
830 return this; | |
831 } | |
832 | |
833 int WhileStatement::hasBreak() | |
834 { | |
835 return TRUE; | |
836 } | |
837 | |
838 int WhileStatement::hasContinue() | |
839 { | |
840 return TRUE; | |
841 } | |
842 | |
843 int WhileStatement::usesEH() | |
844 { | |
845 return body ? body->usesEH() : 0; | |
846 } | |
847 | |
848 int WhileStatement::fallOffEnd() | |
849 { | |
850 if (body) | |
851 body->fallOffEnd(); | |
852 return TRUE; | |
853 } | |
854 | |
855 int WhileStatement::comeFrom() | |
856 { | |
857 if (body) | |
858 return body->comeFrom(); | |
859 return FALSE; | |
860 } | |
861 | |
862 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
863 { | |
864 buf->writestring("while ("); | |
865 condition->toCBuffer(buf, hgs); | |
866 buf->writebyte(')'); | |
867 buf->writenl(); | |
868 if (body) | |
869 body->toCBuffer(buf, hgs); | |
870 } | |
871 | |
872 /******************************** DoStatement ***************************/ | |
873 | |
874 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
875 : Statement(loc) | |
876 { | |
877 body = b; | |
878 condition = c; | |
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879 enclosingtryfinally = NULL; |
1 | 880 } |
881 | |
882 Statement *DoStatement::syntaxCopy() | |
883 { | |
884 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
885 return s; | |
886 } | |
887 | |
888 | |
889 Statement *DoStatement::semantic(Scope *sc) | |
890 { | |
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891 enclosingtryfinally = sc->tfOfTry; |
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892 |
1 | 893 sc->noctor++; |
894 if (body) | |
895 body = body->semanticScope(sc, this, this); | |
896 sc->noctor--; | |
897 condition = condition->semantic(sc); | |
898 condition = resolveProperties(sc, condition); | |
19 | 899 condition = condition->optimize(WANTvalue); |
1 | 900 |
901 condition = condition->checkToBoolean(); | |
902 | |
903 return this; | |
904 } | |
905 | |
906 int DoStatement::hasBreak() | |
907 { | |
908 return TRUE; | |
909 } | |
910 | |
911 int DoStatement::hasContinue() | |
912 { | |
913 return TRUE; | |
914 } | |
915 | |
916 int DoStatement::usesEH() | |
917 { | |
918 return body ? body->usesEH() : 0; | |
919 } | |
920 | |
921 int DoStatement::fallOffEnd() | |
922 { | |
923 if (body) | |
924 body->fallOffEnd(); | |
925 return TRUE; | |
926 } | |
927 | |
928 int DoStatement::comeFrom() | |
929 { | |
930 if (body) | |
931 return body->comeFrom(); | |
932 return FALSE; | |
933 } | |
934 | |
935 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
936 { | |
937 buf->writestring("do"); | |
938 buf->writenl(); | |
939 if (body) | |
940 body->toCBuffer(buf, hgs); | |
941 buf->writestring("while ("); | |
942 condition->toCBuffer(buf, hgs); | |
943 buf->writebyte(')'); | |
944 } | |
945 | |
946 /******************************** ForStatement ***************************/ | |
947 | |
948 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
949 : Statement(loc) | |
950 { | |
951 this->init = init; | |
952 this->condition = condition; | |
953 this->increment = increment; | |
954 this->body = body; | |
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955 this->enclosingtryfinally = NULL; |
1 | 956 } |
957 | |
958 Statement *ForStatement::syntaxCopy() | |
959 { | |
960 Statement *i = NULL; | |
961 if (init) | |
962 i = init->syntaxCopy(); | |
963 Expression *c = NULL; | |
964 if (condition) | |
965 c = condition->syntaxCopy(); | |
966 Expression *inc = NULL; | |
967 if (increment) | |
968 inc = increment->syntaxCopy(); | |
969 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
970 return s; | |
971 } | |
972 | |
973 Statement *ForStatement::semantic(Scope *sc) | |
974 { | |
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975 enclosingtryfinally = sc->tfOfTry; |
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976 |
1 | 977 ScopeDsymbol *sym = new ScopeDsymbol(); |
978 sym->parent = sc->scopesym; | |
979 sc = sc->push(sym); | |
980 if (init) | |
981 init = init->semantic(sc); | |
982 if (!condition) | |
983 // Use a default value | |
984 condition = new IntegerExp(loc, 1, Type::tboolean); | |
985 sc->noctor++; | |
986 condition = condition->semantic(sc); | |
987 condition = resolveProperties(sc, condition); | |
19 | 988 condition = condition->optimize(WANTvalue); |
1 | 989 condition = condition->checkToBoolean(); |
990 if (increment) | |
991 increment = increment->semantic(sc); | |
992 | |
993 sc->sbreak = this; | |
994 sc->scontinue = this; | |
995 body = body->semantic(sc); | |
996 sc->noctor--; | |
997 | |
998 sc->pop(); | |
999 return this; | |
1000 } | |
1001 | |
1002 void ForStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
1003 { | |
1004 //printf("ForStatement::scopeCode()\n"); | |
1005 //print(); | |
1006 if (init) | |
1007 init->scopeCode(sentry, sexception, sfinally); | |
1008 else | |
1009 Statement::scopeCode(sentry, sexception, sfinally); | |
1010 } | |
1011 | |
1012 int ForStatement::hasBreak() | |
1013 { | |
1014 //printf("ForStatement::hasBreak()\n"); | |
1015 return TRUE; | |
1016 } | |
1017 | |
1018 int ForStatement::hasContinue() | |
1019 { | |
1020 return TRUE; | |
1021 } | |
1022 | |
1023 int ForStatement::usesEH() | |
1024 { | |
1025 return (init && init->usesEH()) || body->usesEH(); | |
1026 } | |
1027 | |
1028 int ForStatement::fallOffEnd() | |
1029 { | |
1030 if (body) | |
1031 body->fallOffEnd(); | |
1032 return TRUE; | |
1033 } | |
1034 | |
1035 int ForStatement::comeFrom() | |
1036 { | |
1037 //printf("ForStatement::comeFrom()\n"); | |
1038 if (body) | |
1039 { int result = body->comeFrom(); | |
1040 //printf("result = %d\n", result); | |
1041 return result; | |
1042 } | |
1043 return FALSE; | |
1044 } | |
1045 | |
1046 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
1047 { | |
1048 buf->writestring("for ("); | |
1049 if (init) | |
1050 { | |
1051 hgs->FLinit.init++; | |
1052 hgs->FLinit.decl = 0; | |
1053 init->toCBuffer(buf, hgs); | |
1054 if (hgs->FLinit.decl > 0) | |
1055 buf->writebyte(';'); | |
1056 hgs->FLinit.decl = 0; | |
1057 hgs->FLinit.init--; | |
1058 } | |
1059 else | |
1060 buf->writebyte(';'); | |
1061 if (condition) | |
1062 { buf->writebyte(' '); | |
1063 condition->toCBuffer(buf, hgs); | |
1064 } | |
1065 buf->writebyte(';'); | |
1066 if (increment) | |
1067 { buf->writebyte(' '); | |
1068 increment->toCBuffer(buf, hgs); | |
1069 } | |
1070 buf->writebyte(')'); | |
1071 buf->writenl(); | |
1072 buf->writebyte('{'); | |
1073 buf->writenl(); | |
1074 body->toCBuffer(buf, hgs); | |
1075 buf->writebyte('}'); | |
1076 buf->writenl(); | |
1077 } | |
1078 | |
1079 /******************************** ForeachStatement ***************************/ | |
1080 | |
1081 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Arguments *arguments, | |
1082 Expression *aggr, Statement *body) | |
1083 : Statement(loc) | |
1084 { | |
1085 this->op = op; | |
1086 this->arguments = arguments; | |
1087 this->aggr = aggr; | |
1088 this->body = body; | |
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1089 this->enclosingtryfinally = NULL; |
1 | 1090 |
1091 this->key = NULL; | |
1092 this->value = NULL; | |
1093 | |
1094 this->func = NULL; | |
1095 } | |
1096 | |
1097 Statement *ForeachStatement::syntaxCopy() | |
1098 { | |
1099 Arguments *args = Argument::arraySyntaxCopy(arguments); | |
1100 Expression *exp = aggr->syntaxCopy(); | |
19 | 1101 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, |
1102 body ? body->syntaxCopy() : NULL); | |
1 | 1103 return s; |
1104 } | |
1105 | |
1106 Statement *ForeachStatement::semantic(Scope *sc) | |
1107 { | |
1108 //printf("ForeachStatement::semantic() %p\n", this); | |
1109 ScopeDsymbol *sym; | |
1110 Statement *s = this; | |
1111 int dim = arguments->dim; | |
1112 int i; | |
1113 TypeAArray *taa = NULL; | |
1114 | |
1115 Type *tn = NULL; | |
1116 Type *tnv = NULL; | |
1117 | |
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1118 enclosingtryfinally = sc->tfOfTry; |
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1119 |
1 | 1120 func = sc->func; |
1121 if (func->fes) | |
1122 func = func->fes->func; | |
1123 | |
1124 aggr = aggr->semantic(sc); | |
1125 aggr = resolveProperties(sc, aggr); | |
1126 if (!aggr->type) | |
1127 { | |
1128 error("invalid foreach aggregate %s", aggr->toChars()); | |
1129 return this; | |
1130 } | |
1131 | |
1132 inferApplyArgTypes(op, arguments, aggr); | |
1133 | |
1134 /* Check for inference errors | |
1135 */ | |
1136 if (dim != arguments->dim) | |
1137 { | |
1138 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
1139 error("cannot uniquely infer foreach argument types"); | |
1140 return this; | |
1141 } | |
1142 | |
1143 Type *tab = aggr->type->toBasetype(); | |
1144 | |
1145 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
1146 { | |
1147 if (dim < 1 || dim > 2) | |
1148 { | |
1149 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
1150 return s; | |
1151 } | |
1152 | |
1153 TypeTuple *tuple = (TypeTuple *)tab; | |
1154 Statements *statements = new Statements(); | |
1155 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
1156 size_t n; | |
1157 TupleExp *te = NULL; | |
1158 if (aggr->op == TOKtuple) // expression tuple | |
1159 { te = (TupleExp *)aggr; | |
1160 n = te->exps->dim; | |
1161 } | |
1162 else if (aggr->op == TOKtype) // type tuple | |
1163 { | |
1164 n = Argument::dim(tuple->arguments); | |
1165 } | |
1166 else | |
1167 assert(0); | |
1168 for (size_t j = 0; j < n; j++) | |
1169 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
1170 Expression *e; | |
1171 Type *t; | |
1172 if (te) | |
1173 e = (Expression *)te->exps->data[k]; | |
1174 else | |
1175 t = Argument::getNth(tuple->arguments, k)->type; | |
1176 Argument *arg = (Argument *)arguments->data[0]; | |
1177 Statements *st = new Statements(); | |
1178 | |
1179 if (dim == 2) | |
1180 { // Declare key | |
1181 if (arg->storageClass & (STCout | STCref | STClazy)) | |
1182 error("no storage class for key %s", arg->ident->toChars()); | |
1183 TY keyty = arg->type->ty; | |
34 | 1184 if ((keyty != Tint32 && keyty != Tuns32) && |
1185 (global.params.is64bit && keyty != Tint64 && keyty != Tuns64) | |
1 | 1186 ) |
1187 { | |
34 | 1188 error("foreach: key type must be %s, not %s", global.params.is64bit ? "int, uint, long or ulong" : "int or uint",arg->type->toChars()); |
1 | 1189 } |
1190 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); | |
1191 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
1192 var->storage_class |= STCconst; | |
1193 DeclarationExp *de = new DeclarationExp(loc, var); | |
1194 st->push(new ExpStatement(loc, de)); | |
1195 arg = (Argument *)arguments->data[1]; // value | |
1196 } | |
1197 // Declare value | |
1198 if (arg->storageClass & (STCout | STCref | STClazy)) | |
1199 error("no storage class for value %s", arg->ident->toChars()); | |
1200 Dsymbol *var; | |
1201 if (te) | |
1202 { | |
1203 if (e->type->toBasetype()->ty == Tfunction && | |
1204 e->op == TOKvar) | |
1205 { VarExp *ve = (VarExp *)e; | |
1206 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
1207 } | |
1208 else | |
1209 { | |
1210 arg->type = e->type; | |
1211 Initializer *ie = new ExpInitializer(0, e); | |
1212 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
1213 if (e->isConst()) | |
1214 v->storage_class |= STCconst; | |
1215 #if V2 | |
1216 else | |
1217 v->storage_class |= STCfinal; | |
1218 #endif | |
1219 var = v; | |
1220 } | |
1221 } | |
1222 else | |
1223 { | |
1224 var = new AliasDeclaration(loc, arg->ident, t); | |
1225 } | |
1226 DeclarationExp *de = new DeclarationExp(loc, var); | |
1227 st->push(new ExpStatement(loc, de)); | |
1228 | |
1229 st->push(body->syntaxCopy()); | |
1230 s = new CompoundStatement(loc, st); | |
1231 s = new ScopeStatement(loc, s); | |
1232 statements->push(s); | |
1233 } | |
1234 | |
1235 s = new UnrolledLoopStatement(loc, statements); | |
1236 s = s->semantic(sc); | |
1237 return s; | |
1238 } | |
1239 | |
1240 for (i = 0; i < dim; i++) | |
1241 { Argument *arg = (Argument *)arguments->data[i]; | |
1242 if (!arg->type) | |
1243 { | |
1244 error("cannot infer type for %s", arg->ident->toChars()); | |
1245 return this; | |
1246 } | |
1247 } | |
1248 | |
1249 sym = new ScopeDsymbol(); | |
1250 sym->parent = sc->scopesym; | |
1251 sc = sc->push(sym); | |
1252 | |
1253 sc->noctor++; | |
1254 | |
1255 switch (tab->ty) | |
1256 { | |
1257 case Tarray: | |
1258 case Tsarray: | |
1259 if (dim < 1 || dim > 2) | |
1260 { | |
1261 error("only one or two arguments for array foreach"); | |
1262 break; | |
1263 } | |
1264 | |
1265 /* Look for special case of parsing char types out of char type | |
1266 * array. | |
1267 */ | |
19 | 1268 tn = tab->nextOf()->toBasetype(); |
1 | 1269 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) |
1270 { Argument *arg; | |
1271 | |
1272 i = (dim == 1) ? 0 : 1; // index of value | |
1273 arg = (Argument *)arguments->data[i]; | |
1274 arg->type = arg->type->semantic(loc, sc); | |
1275 tnv = arg->type->toBasetype(); | |
1276 if (tnv->ty != tn->ty && | |
1277 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
1278 { | |
1279 if (arg->storageClass & STCref) | |
1280 error("foreach: value of UTF conversion cannot be ref"); | |
1281 if (dim == 2) | |
1282 { arg = (Argument *)arguments->data[0]; | |
1283 if (arg->storageClass & STCref) | |
1284 error("foreach: key cannot be ref"); | |
1285 } | |
1286 goto Lapply; | |
1287 } | |
1288 } | |
1289 | |
1290 for (i = 0; i < dim; i++) | |
1291 { // Declare args | |
1292 Argument *arg = (Argument *)arguments->data[i]; | |
1293 VarDeclaration *var; | |
1294 | |
1295 var = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
1296 var->storage_class |= STCforeach; | |
1297 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
1298 #if 1 | |
1299 DeclarationExp *de = new DeclarationExp(loc, var); | |
1300 de->semantic(sc); | |
1301 #else | |
1302 var->semantic(sc); | |
1303 if (!sc->insert(var)) | |
1304 error("%s already defined", var->ident->toChars()); | |
1305 #endif | |
1306 if (dim == 2 && i == 0) | |
1307 key = var; | |
1308 else | |
1309 value = var; | |
1310 } | |
1311 | |
1312 sc->sbreak = this; | |
1313 sc->scontinue = this; | |
1314 body = body->semantic(sc); | |
1315 | |
1316 if (!value->type->equals(tab->next)) | |
1317 { | |
1318 if (aggr->op == TOKstring) | |
1319 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
1320 else | |
1321 error("foreach: %s is not an array of %s", tab->toChars(), value->type->toChars()); | |
1322 } | |
1323 | |
1324 if (key && | |
34 | 1325 ((key->type->ty != Tint32 && key->type->ty != Tuns32) && |
1326 (global.params.is64bit && key->type->ty != Tint64 && key->type->ty != Tuns64) | |
1 | 1327 ) |
1328 ) | |
1329 { | |
34 | 1330 error("foreach: key type must be %s, not %s", global.params.is64bit ? "int, uint, long or ulong" : "int or uint", key->type->toChars()); |
1 | 1331 } |
1332 | |
1333 if (key && key->storage_class & (STCout | STCref)) | |
1334 error("foreach: key cannot be out or ref"); | |
1335 break; | |
1336 | |
1337 case Taarray: | |
1338 taa = (TypeAArray *)tab; | |
1339 if (dim < 1 || dim > 2) | |
1340 { | |
1341 error("only one or two arguments for associative array foreach"); | |
1342 break; | |
1343 } | |
1344 if (op == TOKforeach_reverse) | |
1345 { | |
1346 error("no reverse iteration on associative arrays"); | |
1347 } | |
1348 goto Lapply; | |
1349 | |
1350 case Tclass: | |
1351 case Tstruct: | |
1352 case Tdelegate: | |
1353 Lapply: | |
1354 { FuncDeclaration *fdapply; | |
1355 Arguments *args; | |
1356 Expression *ec; | |
1357 Expression *e; | |
1358 FuncLiteralDeclaration *fld; | |
1359 Argument *a; | |
1360 Type *t; | |
1361 Expression *flde; | |
1362 Identifier *id; | |
1363 Type *tret; | |
1364 | |
19 | 1365 tret = func->type->nextOf(); |
1 | 1366 |
1367 // Need a variable to hold value from any return statements in body. | |
1368 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
1369 { VarDeclaration *v; | |
1370 | |
1371 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
1372 v->noauto = 1; | |
1373 v->semantic(sc); | |
1374 if (!sc->insert(v)) | |
1375 assert(0); | |
1376 v->parent = sc->func; | |
1377 sc->func->vresult = v; | |
1378 } | |
1379 | |
1380 /* Turn body into the function literal: | |
1381 * int delegate(ref T arg) { body } | |
1382 */ | |
1383 args = new Arguments(); | |
1384 for (i = 0; i < dim; i++) | |
1385 { Argument *arg = (Argument *)arguments->data[i]; | |
1386 | |
1387 arg->type = arg->type->semantic(loc, sc); | |
1388 if (arg->storageClass & STCref) | |
1389 id = arg->ident; | |
1390 else | |
1391 { // Make a copy of the ref argument so it isn't | |
1392 // a reference. | |
1393 VarDeclaration *v; | |
1394 Initializer *ie; | |
1395 char applyArg[10 + sizeof(i)*3 + 1]; | |
1396 | |
1397 sprintf(applyArg, "__applyArg%d", i); | |
1398 id = Lexer::idPool(applyArg); | |
1399 | |
1400 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
1401 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
1402 s = new DeclarationStatement(0, v); | |
1403 body = new CompoundStatement(loc, s, body); | |
1404 } | |
1405 a = new Argument(STCref, arg->type, id, NULL); | |
1406 args->push(a); | |
1407 } | |
1408 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
1409 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
1410 fld->fbody = body; | |
1411 flde = new FuncExp(loc, fld); | |
1412 flde = flde->semantic(sc); | |
1413 | |
1414 // Resolve any forward referenced goto's | |
1415 for (int i = 0; i < gotos.dim; i++) | |
1416 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
1417 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
1418 | |
1419 if (!gs->label->statement) | |
1420 { // 'Promote' it to this scope, and replace with a return | |
1421 cases.push(gs); | |
1422 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
1423 cs->statements->data[0] = (void *)s; | |
1424 } | |
1425 } | |
1426 | |
1427 if (tab->ty == Taarray) | |
1428 { | |
1429 // Check types | |
1430 Argument *arg = (Argument *)arguments->data[0]; | |
1431 if (dim == 2) | |
1432 { | |
1433 if (arg->storageClass & STCref) | |
1434 error("foreach: index cannot be ref"); | |
1435 if (!arg->type->equals(taa->index)) | |
1436 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
1437 arg = (Argument *)arguments->data[1]; | |
1438 } | |
19 | 1439 if (!arg->type->equals(taa->nextOf())) |
1440 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
1 | 1441 |
1442 /* Call: | |
1443 * _aaApply(aggr, keysize, flde) | |
1444 */ | |
1445 if (dim == 2) | |
1446 fdapply = FuncDeclaration::genCfunc(Type::tindex, "_aaApply2"); | |
1447 else | |
1448 fdapply = FuncDeclaration::genCfunc(Type::tindex, "_aaApply"); | |
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1449 fdapply->runTimeHack = true; |
1 | 1450 ec = new VarExp(0, fdapply); |
1451 Expressions *exps = new Expressions(); | |
1452 exps->push(aggr); | |
1453 size_t keysize = taa->key->size(); | |
1454 keysize = (keysize + 3) & ~3; | |
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|
1455 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); |
1 | 1456 exps->push(flde); |
1457 e = new CallExp(loc, ec, exps); | |
1458 e->type = Type::tindex; // don't run semantic() on e | |
1459 } | |
1460 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
1461 { | |
1462 /* Call: | |
1463 * _aApply(aggr, flde) | |
1464 */ | |
1465 static char fntab[9][3] = | |
1466 { "cc","cw","cd", | |
1467 "wc","cc","wd", | |
1468 "dc","dw","dd" | |
1469 }; | |
1470 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
1471 int flag; | |
1472 | |
1473 switch (tn->ty) | |
1474 { | |
1475 case Tchar: flag = 0; break; | |
1476 case Twchar: flag = 3; break; | |
1477 case Tdchar: flag = 6; break; | |
1478 default: assert(0); | |
1479 } | |
1480 switch (tnv->ty) | |
1481 { | |
1482 case Tchar: flag += 0; break; | |
1483 case Twchar: flag += 1; break; | |
1484 case Tdchar: flag += 2; break; | |
1485 default: assert(0); | |
1486 } | |
1487 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
1488 int j = sprintf(fdname, "_aApply%s%.*s%d", r, 2, fntab[flag], dim); | |
1489 assert(j < sizeof(fdname)); | |
1490 fdapply = FuncDeclaration::genCfunc(Type::tindex, fdname); | |
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|
1491 fdapply->runTimeHack = true; |
1 | 1492 |
1493 ec = new VarExp(0, fdapply); | |
1494 Expressions *exps = new Expressions(); | |
1495 if (tab->ty == Tsarray) | |
1496 aggr = aggr->castTo(sc, tn->arrayOf()); | |
1497 exps->push(aggr); | |
1498 exps->push(flde); | |
1499 e = new CallExp(loc, ec, exps); | |
1500 e->type = Type::tindex; // don't run semantic() on e | |
1501 } | |
1502 else if (tab->ty == Tdelegate) | |
1503 { | |
1504 /* Call: | |
1505 * aggr(flde) | |
1506 */ | |
1507 Expressions *exps = new Expressions(); | |
1508 exps->push(flde); | |
1509 e = new CallExp(loc, aggr, exps); | |
1510 e = e->semantic(sc); | |
1511 if (e->type != Type::tint32) | |
1512 error("opApply() function for %s must return an int", tab->toChars()); | |
1513 } | |
1514 else | |
1515 { | |
1516 /* Call: | |
1517 * aggr.apply(flde) | |
1518 */ | |
1519 ec = new DotIdExp(loc, aggr, | |
1520 (op == TOKforeach_reverse) ? Id::applyReverse | |
1521 : Id::apply); | |
1522 Expressions *exps = new Expressions(); | |
1523 exps->push(flde); | |
1524 e = new CallExp(loc, ec, exps); | |
1525 e = e->semantic(sc); | |
1526 if (e->type != Type::tint32) | |
1527 error("opApply() function for %s must return an int", tab->toChars()); | |
1528 } | |
1529 | |
1530 if (!cases.dim) | |
1531 // Easy case, a clean exit from the loop | |
1532 s = new ExpStatement(loc, e); | |
1533 else | |
1534 { // Construct a switch statement around the return value | |
1535 // of the apply function. | |
1536 Statements *a = new Statements(); | |
1537 | |
1538 // default: break; takes care of cases 0 and 1 | |
1539 s = new BreakStatement(0, NULL); | |
1540 s = new DefaultStatement(0, s); | |
1541 a->push(s); | |
1542 | |
1543 // cases 2... | |
1544 for (int i = 0; i < cases.dim; i++) | |
1545 { | |
1546 s = (Statement *)cases.data[i]; | |
1547 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
1548 a->push(s); | |
1549 } | |
1550 | |
1551 s = new CompoundStatement(loc, a); | |
1552 s = new SwitchStatement(loc, e, s); | |
1553 s = s->semantic(sc); | |
1554 } | |
1555 break; | |
1556 } | |
1557 | |
1558 default: | |
1559 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
1560 break; | |
1561 } | |
1562 sc->noctor--; | |
1563 sc->pop(); | |
1564 return s; | |
1565 } | |
1566 | |
1567 int ForeachStatement::hasBreak() | |
1568 { | |
1569 return TRUE; | |
1570 } | |
1571 | |
1572 int ForeachStatement::hasContinue() | |
1573 { | |
1574 return TRUE; | |
1575 } | |
1576 | |
1577 int ForeachStatement::usesEH() | |
1578 { | |
1579 return body->usesEH(); | |
1580 } | |
1581 | |
1582 int ForeachStatement::fallOffEnd() | |
1583 { | |
1584 if (body) | |
1585 body->fallOffEnd(); | |
1586 return TRUE; | |
1587 } | |
1588 | |
1589 int ForeachStatement::comeFrom() | |
1590 { | |
1591 if (body) | |
1592 return body->comeFrom(); | |
1593 return FALSE; | |
1594 } | |
1595 | |
1596 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
1597 { | |
1598 buf->writestring(Token::toChars(op)); | |
1599 buf->writestring(" ("); | |
1600 int i; | |
1601 for (int i = 0; i < arguments->dim; i++) | |
1602 { | |
1603 Argument *a = (Argument *)arguments->data[i]; | |
1604 if (i) | |
1605 buf->writestring(", "); | |
1606 if (a->storageClass & STCref) | |
1607 buf->writestring((global.params.Dversion == 1) | |
1608 ? (char*)"inout " : (char*)"ref "); | |
1609 if (a->type) | |
1610 a->type->toCBuffer(buf, a->ident, hgs); | |
1611 else | |
1612 buf->writestring(a->ident->toChars()); | |
1613 } | |
1614 buf->writestring("; "); | |
1615 aggr->toCBuffer(buf, hgs); | |
1616 buf->writebyte(')'); | |
1617 buf->writenl(); | |
1618 buf->writebyte('{'); | |
1619 buf->writenl(); | |
1620 if (body) | |
1621 body->toCBuffer(buf, hgs); | |
1622 buf->writebyte('}'); | |
1623 buf->writenl(); | |
1624 } | |
1625 | |
1626 /******************************** IfStatement ***************************/ | |
1627 | |
1628 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody) | |
1629 : Statement(loc) | |
1630 { | |
1631 this->arg = arg; | |
1632 this->condition = condition; | |
1633 this->ifbody = ifbody; | |
1634 this->elsebody = elsebody; | |
1635 this->match = NULL; | |
1636 } | |
1637 | |
1638 Statement *IfStatement::syntaxCopy() | |
1639 { | |
1640 Statement *i = NULL; | |
1641 if (ifbody) | |
1642 i = ifbody->syntaxCopy(); | |
1643 | |
1644 Statement *e = NULL; | |
1645 if (elsebody) | |
1646 e = elsebody->syntaxCopy(); | |
1647 | |
1648 Argument *a = arg ? arg->syntaxCopy() : NULL; | |
1649 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); | |
1650 return s; | |
1651 } | |
1652 | |
1653 Statement *IfStatement::semantic(Scope *sc) | |
1654 { | |
1655 condition = condition->semantic(sc); | |
1656 condition = resolveProperties(sc, condition); | |
1657 condition = condition->checkToBoolean(); | |
1658 | |
1659 // If we can short-circuit evaluate the if statement, don't do the | |
1660 // semantic analysis of the skipped code. | |
1661 // This feature allows a limited form of conditional compilation. | |
1662 condition = condition->optimize(WANTflags); | |
1663 | |
1664 // Evaluate at runtime | |
1665 unsigned cs0 = sc->callSuper; | |
1666 unsigned cs1; | |
1667 | |
1668 Scope *scd; | |
1669 if (arg) | |
1670 { /* Declare arg, which we will set to be the | |
1671 * result of condition. | |
1672 */ | |
1673 ScopeDsymbol *sym = new ScopeDsymbol(); | |
1674 sym->parent = sc->scopesym; | |
1675 scd = sc->push(sym); | |
1676 | |
1677 Type *t = arg->type ? arg->type : condition->type; | |
1678 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
1679 match->noauto = 1; | |
1680 match->semantic(scd); | |
1681 if (!scd->insert(match)) | |
1682 assert(0); | |
1683 match->parent = sc->func; | |
1684 | |
1685 /* Generate: | |
1686 * (arg = condition) | |
1687 */ | |
1688 VarExp *v = new VarExp(0, match); | |
1689 condition = new AssignExp(loc, v, condition); | |
1690 condition = condition->semantic(scd); | |
1691 } | |
1692 else | |
1693 scd = sc->push(); | |
1694 ifbody = ifbody->semantic(scd); | |
1695 scd->pop(); | |
1696 | |
1697 cs1 = sc->callSuper; | |
1698 sc->callSuper = cs0; | |
1699 if (elsebody) | |
1700 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
1701 sc->mergeCallSuper(loc, cs1); | |
1702 | |
1703 return this; | |
1704 } | |
1705 | |
1706 int IfStatement::usesEH() | |
1707 { | |
1708 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
1709 } | |
1710 | |
1711 int IfStatement::fallOffEnd() | |
1712 { | |
1713 if (!ifbody || ifbody->fallOffEnd() || | |
1714 !elsebody || elsebody->fallOffEnd()) | |
1715 return TRUE; | |
1716 return FALSE; | |
1717 } | |
1718 | |
1719 | |
1720 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
1721 { | |
1722 buf->writestring("if ("); | |
1723 if (arg) | |
1724 { | |
1725 if (arg->type) | |
1726 arg->type->toCBuffer(buf, arg->ident, hgs); | |
1727 else | |
1728 buf->writestring(arg->ident->toChars()); | |
1729 buf->writebyte(';'); | |
1730 } | |
1731 condition->toCBuffer(buf, hgs); | |
1732 buf->writebyte(')'); | |
1733 buf->writenl(); | |
1734 ifbody->toCBuffer(buf, hgs); | |
1735 if (elsebody) | |
1736 { buf->writestring("else"); | |
1737 buf->writenl(); | |
1738 elsebody->toCBuffer(buf, hgs); | |
1739 } | |
1740 } | |
1741 | |
1742 /******************************** ConditionalStatement ***************************/ | |
1743 | |
1744 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
1745 : Statement(loc) | |
1746 { | |
1747 this->condition = condition; | |
1748 this->ifbody = ifbody; | |
1749 this->elsebody = elsebody; | |
1750 } | |
1751 | |
1752 Statement *ConditionalStatement::syntaxCopy() | |
1753 { | |
1754 Statement *e = NULL; | |
1755 if (elsebody) | |
1756 e = elsebody->syntaxCopy(); | |
1757 ConditionalStatement *s = new ConditionalStatement(loc, | |
1758 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
1759 return s; | |
1760 } | |
1761 | |
1762 Statement *ConditionalStatement::semantic(Scope *sc) | |
1763 { | |
1764 //printf("ConditionalStatement::semantic()\n"); | |
1765 | |
1766 // If we can short-circuit evaluate the if statement, don't do the | |
1767 // semantic analysis of the skipped code. | |
1768 // This feature allows a limited form of conditional compilation. | |
1769 if (condition->include(sc, NULL)) | |
1770 { | |
1771 ifbody = ifbody->semantic(sc); | |
1772 return ifbody; | |
1773 } | |
1774 else | |
1775 { | |
1776 if (elsebody) | |
1777 elsebody = elsebody->semantic(sc); | |
1778 return elsebody; | |
1779 } | |
1780 } | |
1781 | |
1782 Statements *ConditionalStatement::flatten(Scope *sc) | |
1783 { | |
1784 Statement *s; | |
1785 | |
1786 if (condition->include(sc, NULL)) | |
1787 s = ifbody; | |
1788 else | |
1789 s = elsebody; | |
1790 | |
1791 Statements *a = new Statements(); | |
1792 a->push(s); | |
1793 return a; | |
1794 } | |
1795 | |
1796 int ConditionalStatement::usesEH() | |
1797 { | |
1798 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
1799 } | |
1800 | |
1801 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
1802 { | |
1803 condition->toCBuffer(buf, hgs); | |
1804 buf->writenl(); | |
1805 if (ifbody) | |
1806 ifbody->toCBuffer(buf, hgs); | |
1807 if (elsebody) | |
1808 { | |
1809 buf->writestring("else"); | |
1810 buf->writenl(); | |
1811 elsebody->toCBuffer(buf, hgs); | |
1812 } | |
1813 buf->writenl(); | |
1814 } | |
1815 | |
1816 | |
1817 /******************************** PragmaStatement ***************************/ | |
1818 | |
1819 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
1820 : Statement(loc) | |
1821 { | |
1822 this->ident = ident; | |
1823 this->args = args; | |
1824 this->body = body; | |
1825 } | |
1826 | |
1827 Statement *PragmaStatement::syntaxCopy() | |
1828 { | |
1829 Statement *b = NULL; | |
1830 if (body) | |
1831 b = body->syntaxCopy(); | |
1832 PragmaStatement *s = new PragmaStatement(loc, | |
1833 ident, Expression::arraySyntaxCopy(args), b); | |
1834 return s; | |
1835 } | |
1836 | |
1837 Statement *PragmaStatement::semantic(Scope *sc) | |
1838 { // Should be merged with PragmaDeclaration | |
1839 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
1840 //printf("body = %p\n", body); | |
1841 if (ident == Id::msg) | |
1842 { | |
1843 if (args) | |
1844 { | |
1845 for (size_t i = 0; i < args->dim; i++) | |
1846 { | |
1847 Expression *e = (Expression *)args->data[i]; | |
1848 | |
1849 e = e->semantic(sc); | |
1850 e = e->optimize(WANTvalue | WANTinterpret); | |
1851 if (e->op == TOKstring) | |
1852 { | |
1853 StringExp *se = (StringExp *)e; | |
1854 fprintf(stdmsg, "%.*s", (int)se->len, se->string); | |
1855 } | |
1856 else | |
1857 error("string expected for message, not '%s'", e->toChars()); | |
1858 } | |
1859 fprintf(stdmsg, "\n"); | |
1860 } | |
1861 } | |
1862 else if (ident == Id::lib) | |
1863 { | |
1864 if (!args || args->dim != 1) | |
1865 error("string expected for library name"); | |
1866 else | |
1867 { | |
1868 Expression *e = (Expression *)args->data[0]; | |
1869 | |
1870 e = e->semantic(sc); | |
1871 e = e->optimize(WANTvalue | WANTinterpret); | |
1872 args->data[0] = (void *)e; | |
1873 if (e->op != TOKstring) | |
1874 error("string expected for library name, not '%s'", e->toChars()); | |
1875 else if (global.params.verbose) | |
1876 { | |
1877 StringExp *se = (StringExp *)e; | |
1878 char *name = (char *)mem.malloc(se->len + 1); | |
1879 memcpy(name, se->string, se->len); | |
1880 name[se->len] = 0; | |
1881 printf("library %s\n", name); | |
1882 mem.free(name); | |
1883 } | |
1884 } | |
1885 } | |
1886 else | |
1887 error("unrecognized pragma(%s)", ident->toChars()); | |
1888 | |
1889 if (body) | |
1890 { | |
1891 body = body->semantic(sc); | |
1892 } | |
1893 return body; | |
1894 } | |
1895 | |
1896 int PragmaStatement::usesEH() | |
1897 { | |
1898 return body && body->usesEH(); | |
1899 } | |
1900 | |
1901 int PragmaStatement::fallOffEnd() | |
1902 { | |
1903 if (body) | |
1904 return body->fallOffEnd(); | |
1905 return TRUE; | |
1906 } | |
1907 | |
1908 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
1909 { | |
1910 buf->writestring("pragma ("); | |
1911 buf->writestring(ident->toChars()); | |
1912 if (args && args->dim) | |
1913 { | |
1914 buf->writestring(", "); | |
1915 argsToCBuffer(buf, args, hgs); | |
1916 } | |
1917 buf->writeByte(')'); | |
1918 if (body) | |
1919 { | |
1920 buf->writenl(); | |
1921 buf->writeByte('{'); | |
1922 buf->writenl(); | |
1923 | |
1924 body->toCBuffer(buf, hgs); | |
1925 | |
1926 buf->writeByte('}'); | |
1927 buf->writenl(); | |
1928 } | |
1929 else | |
1930 { | |
1931 buf->writeByte(';'); | |
1932 buf->writenl(); | |
1933 } | |
1934 } | |
1935 | |
1936 | |
1937 /******************************** StaticAssertStatement ***************************/ | |
1938 | |
1939 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
1940 : Statement(sa->loc) | |
1941 { | |
1942 this->sa = sa; | |
1943 } | |
1944 | |
1945 Statement *StaticAssertStatement::syntaxCopy() | |
1946 { | |
1947 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
1948 return s; | |
1949 } | |
1950 | |
1951 Statement *StaticAssertStatement::semantic(Scope *sc) | |
1952 { | |
1953 sa->semantic2(sc); | |
1954 return NULL; | |
1955 } | |
1956 | |
1957 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
1958 { | |
1959 sa->toCBuffer(buf, hgs); | |
1960 } | |
1961 | |
1962 | |
1963 /******************************** SwitchStatement ***************************/ | |
1964 | |
1965 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
1966 : Statement(loc) | |
1967 { | |
1968 condition = c; | |
1969 body = b; | |
1970 sdefault = NULL; | |
1971 cases = NULL; | |
1972 hasNoDefault = 0; | |
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a27941d00351
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diff
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|
1973 // LLVMDC |
148
86d3bb8ca33e
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
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parents:
145
diff
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|
1974 enclosingtryfinally = NULL; |
1 | 1975 } |
1976 | |
1977 Statement *SwitchStatement::syntaxCopy() | |
1978 { | |
1979 SwitchStatement *s = new SwitchStatement(loc, | |
1980 condition->syntaxCopy(), body->syntaxCopy()); | |
1981 return s; | |
1982 } | |
1983 | |
1984 Statement *SwitchStatement::semantic(Scope *sc) | |
1985 { | |
1986 //printf("SwitchStatement::semantic(%p)\n", this); | |
1987 assert(!cases); // ensure semantic() is only run once | |
145
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|
1988 |
148
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|
1989 enclosingtryfinally = sc->tfOfTry; |
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1990 |
1 | 1991 condition = condition->semantic(sc); |
1992 condition = resolveProperties(sc, condition); | |
1993 if (condition->type->isString()) | |
1994 { | |
1995 // If it's not an array, cast it to one | |
1996 if (condition->type->ty != Tarray) | |
1997 { | |
19 | 1998 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); |
1 | 1999 } |
2000 } | |
2001 else | |
2002 { condition = condition->integralPromotions(sc); | |
2003 condition->checkIntegral(); | |
2004 } | |
139
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|
2005 condition = condition->optimize(WANTvalue); |
1 | 2006 |
2007 sc = sc->push(); | |
2008 sc->sbreak = this; | |
2009 sc->sw = this; | |
2010 | |
2011 cases = new Array(); | |
2012 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
2013 body = body->semantic(sc); | |
2014 sc->noctor--; | |
2015 | |
2016 // Resolve any goto case's with exp | |
2017 for (int i = 0; i < gotoCases.dim; i++) | |
2018 { | |
2019 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
2020 | |
2021 if (!gcs->exp) | |
2022 { | |
2023 gcs->error("no case statement following goto case;"); | |
2024 break; | |
2025 } | |
2026 | |
2027 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
2028 { | |
2029 if (!scx->sw) | |
2030 continue; | |
2031 for (int j = 0; j < scx->sw->cases->dim; j++) | |
2032 { | |
2033 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
2034 | |
2035 if (cs->exp->equals(gcs->exp)) | |
2036 { | |
2037 gcs->cs = cs; | |
2038 goto Lfoundcase; | |
2039 } | |
2040 } | |
2041 } | |
2042 gcs->error("case %s not found", gcs->exp->toChars()); | |
2043 | |
2044 Lfoundcase: | |
2045 ; | |
2046 } | |
2047 | |
2048 if (!sc->sw->sdefault) | |
2049 { hasNoDefault = 1; | |
2050 | |
2051 if (global.params.warnings) | |
2052 { fprintf(stdmsg, "warning - "); | |
2053 error("switch statement has no default"); | |
2054 } | |
2055 | |
2056 // Generate runtime error if the default is hit | |
2057 Statements *a = new Statements(); | |
2058 CompoundStatement *cs; | |
2059 Statement *s; | |
2060 | |
2061 if (global.params.useSwitchError) | |
2062 s = new SwitchErrorStatement(loc); | |
2063 else | |
2064 { Expression *e = new HaltExp(loc); | |
2065 s = new ExpStatement(loc, e); | |
2066 } | |
2067 | |
2068 a->reserve(4); | |
2069 a->push(body); | |
2070 a->push(new BreakStatement(loc, NULL)); | |
2071 sc->sw->sdefault = new DefaultStatement(loc, s); | |
2072 a->push(sc->sw->sdefault); | |
2073 cs = new CompoundStatement(loc, a); | |
2074 body = cs; | |
2075 } | |
2076 | |
2077 sc->pop(); | |
2078 return this; | |
2079 } | |
2080 | |
2081 int SwitchStatement::hasBreak() | |
2082 { | |
2083 return TRUE; | |
2084 } | |
2085 | |
2086 int SwitchStatement::usesEH() | |
2087 { | |
2088 return body ? body->usesEH() : 0; | |
2089 } | |
2090 | |
2091 int SwitchStatement::fallOffEnd() | |
2092 { | |
2093 if (body) | |
2094 body->fallOffEnd(); | |
2095 return TRUE; // need to do this better | |
2096 } | |
2097 | |
2098 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2099 { | |
2100 buf->writestring("switch ("); | |
2101 condition->toCBuffer(buf, hgs); | |
2102 buf->writebyte(')'); | |
2103 buf->writenl(); | |
2104 if (body) | |
2105 { | |
2106 if (!body->isScopeStatement()) | |
2107 { buf->writebyte('{'); | |
2108 buf->writenl(); | |
2109 body->toCBuffer(buf, hgs); | |
2110 buf->writebyte('}'); | |
2111 buf->writenl(); | |
2112 } | |
2113 else | |
2114 { | |
2115 body->toCBuffer(buf, hgs); | |
2116 } | |
2117 } | |
2118 } | |
2119 | |
2120 /******************************** CaseStatement ***************************/ | |
2121 | |
2122 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
2123 : Statement(loc) | |
2124 { | |
2125 this->exp = exp; | |
2126 this->statement = s; | |
2127 cblock = NULL; | |
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2128 bodyBB = NULL; |
1 | 2129 } |
2130 | |
2131 Statement *CaseStatement::syntaxCopy() | |
2132 { | |
2133 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
2134 return s; | |
2135 } | |
2136 | |
2137 Statement *CaseStatement::semantic(Scope *sc) | |
2138 { SwitchStatement *sw = sc->sw; | |
2139 | |
19 | 2140 //printf("CaseStatement::semantic() %s\n", toChars()); |
1 | 2141 exp = exp->semantic(sc); |
2142 if (sw) | |
2143 { int i; | |
2144 | |
2145 exp = exp->implicitCastTo(sc, sw->condition->type); | |
2146 exp = exp->optimize(WANTvalue | WANTinterpret); | |
2147 if (exp->op != TOKstring && exp->op != TOKint64) | |
2148 { | |
2149 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
2150 exp = new IntegerExp(0); | |
2151 } | |
2152 | |
2153 for (i = 0; i < sw->cases->dim; i++) | |
2154 { | |
2155 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
2156 | |
2157 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
2158 if (cs->exp->equals(exp)) | |
2159 { error("duplicate case %s in switch statement", exp->toChars()); | |
2160 break; | |
2161 } | |
2162 } | |
2163 | |
2164 sw->cases->push(this); | |
2165 | |
2166 // Resolve any goto case's with no exp to this case statement | |
2167 for (i = 0; i < sw->gotoCases.dim; i++) | |
2168 { | |
2169 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
2170 | |
2171 if (!gcs->exp) | |
2172 { | |
2173 gcs->cs = this; | |
2174 sw->gotoCases.remove(i); // remove from array | |
2175 } | |
2176 } | |
2177 } | |
2178 else | |
2179 error("case not in switch statement"); | |
2180 statement = statement->semantic(sc); | |
2181 return this; | |
2182 } | |
2183 | |
2184 int CaseStatement::compare(Object *obj) | |
2185 { | |
2186 // Sort cases so we can do an efficient lookup | |
2187 CaseStatement *cs2 = (CaseStatement *)(obj); | |
2188 | |
2189 return exp->compare(cs2->exp); | |
2190 } | |
2191 | |
2192 int CaseStatement::usesEH() | |
2193 { | |
2194 return statement->usesEH(); | |
2195 } | |
2196 | |
2197 int CaseStatement::fallOffEnd() | |
2198 { | |
2199 return statement->fallOffEnd(); | |
2200 } | |
2201 | |
2202 int CaseStatement::comeFrom() | |
2203 { | |
2204 return TRUE; | |
2205 } | |
2206 | |
2207 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2208 { | |
2209 buf->writestring("case "); | |
2210 exp->toCBuffer(buf, hgs); | |
2211 buf->writebyte(':'); | |
2212 buf->writenl(); | |
2213 statement->toCBuffer(buf, hgs); | |
2214 } | |
2215 | |
2216 /******************************** DefaultStatement ***************************/ | |
2217 | |
2218 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
2219 : Statement(loc) | |
2220 { | |
2221 this->statement = s; | |
2222 #if IN_GCC | |
2223 + cblock = NULL; | |
2224 #endif | |
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2225 bodyBB = NULL; |
1 | 2226 } |
2227 | |
2228 Statement *DefaultStatement::syntaxCopy() | |
2229 { | |
2230 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
2231 return s; | |
2232 } | |
2233 | |
2234 Statement *DefaultStatement::semantic(Scope *sc) | |
2235 { | |
2236 if (sc->sw) | |
2237 { | |
2238 if (sc->sw->sdefault) | |
2239 { | |
2240 error("switch statement already has a default"); | |
2241 } | |
2242 sc->sw->sdefault = this; | |
2243 } | |
2244 else | |
2245 error("default not in switch statement"); | |
2246 statement = statement->semantic(sc); | |
2247 return this; | |
2248 } | |
2249 | |
2250 int DefaultStatement::usesEH() | |
2251 { | |
2252 return statement->usesEH(); | |
2253 } | |
2254 | |
2255 int DefaultStatement::fallOffEnd() | |
2256 { | |
2257 return statement->fallOffEnd(); | |
2258 } | |
2259 | |
2260 int DefaultStatement::comeFrom() | |
2261 { | |
2262 return TRUE; | |
2263 } | |
2264 | |
2265 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2266 { | |
2267 buf->writestring("default:\n"); | |
2268 statement->toCBuffer(buf, hgs); | |
2269 } | |
2270 | |
2271 /******************************** GotoDefaultStatement ***************************/ | |
2272 | |
2273 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
2274 : Statement(loc) | |
2275 { | |
2276 sw = NULL; | |
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diff
changeset
|
2277 enclosingtryfinally = NULL; |
1 | 2278 } |
2279 | |
2280 Statement *GotoDefaultStatement::syntaxCopy() | |
2281 { | |
2282 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
2283 return s; | |
2284 } | |
2285 | |
2286 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
2287 { | |
148
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parents:
145
diff
changeset
|
2288 enclosingtryfinally = sc->tfOfTry; |
1 | 2289 sw = sc->sw; |
2290 if (!sw) | |
2291 error("goto default not in switch statement"); | |
2292 return this; | |
2293 } | |
2294 | |
2295 int GotoDefaultStatement::fallOffEnd() | |
2296 { | |
2297 return FALSE; | |
2298 } | |
2299 | |
2300 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2301 { | |
2302 buf->writestring("goto default;\n"); | |
2303 } | |
2304 | |
2305 /******************************** GotoCaseStatement ***************************/ | |
2306 | |
2307 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
2308 : Statement(loc) | |
2309 { | |
2310 cs = NULL; | |
2311 this->exp = exp; | |
148
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diff
changeset
|
2312 enclosingtryfinally = NULL; |
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diff
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|
2313 sw = NULL; |
1 | 2314 } |
2315 | |
2316 Statement *GotoCaseStatement::syntaxCopy() | |
2317 { | |
2318 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
2319 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
2320 return s; | |
2321 } | |
2322 | |
2323 Statement *GotoCaseStatement::semantic(Scope *sc) | |
2324 { | |
148
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diff
changeset
|
2325 enclosingtryfinally = sc->tfOfTry; |
1 | 2326 if (exp) |
2327 exp = exp->semantic(sc); | |
2328 | |
2329 if (!sc->sw) | |
2330 error("goto case not in switch statement"); | |
2331 else | |
2332 { | |
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[svn r150] fixes #16 and #17, implements GotoCaseStatement
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parents:
144
diff
changeset
|
2333 sw = sc->sw; |
1 | 2334 sc->sw->gotoCases.push(this); |
2335 if (exp) | |
2336 { | |
2337 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
2338 exp = exp->optimize(WANTvalue); | |
2339 } | |
2340 } | |
2341 return this; | |
2342 } | |
2343 | |
2344 int GotoCaseStatement::fallOffEnd() | |
2345 { | |
2346 return FALSE; | |
2347 } | |
2348 | |
2349 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2350 { | |
2351 buf->writestring("goto case"); | |
2352 if (exp) | |
2353 { buf->writebyte(' '); | |
2354 exp->toCBuffer(buf, hgs); | |
2355 } | |
2356 buf->writebyte(';'); | |
2357 buf->writenl(); | |
2358 } | |
2359 | |
2360 /******************************** SwitchErrorStatement ***************************/ | |
2361 | |
2362 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
2363 : Statement(loc) | |
2364 { | |
2365 } | |
2366 | |
2367 int SwitchErrorStatement::fallOffEnd() | |
2368 { | |
2369 return FALSE; | |
2370 } | |
2371 | |
2372 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2373 { | |
2374 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
2375 buf->writenl(); | |
2376 } | |
2377 | |
2378 /******************************** ReturnStatement ***************************/ | |
2379 | |
2380 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
2381 : Statement(loc) | |
2382 { | |
2383 this->exp = exp; | |
148
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parents:
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diff
changeset
|
2384 this->enclosingtryfinally = NULL; |
1 | 2385 } |
2386 | |
2387 Statement *ReturnStatement::syntaxCopy() | |
2388 { | |
2389 Expression *e = NULL; | |
2390 if (exp) | |
2391 e = exp->syntaxCopy(); | |
2392 ReturnStatement *s = new ReturnStatement(loc, e); | |
2393 return s; | |
2394 } | |
2395 | |
2396 Statement *ReturnStatement::semantic(Scope *sc) | |
2397 { | |
2398 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
148
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diff
changeset
|
2399 this->enclosingtryfinally = sc->tfOfTry; |
1 | 2400 |
2401 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
2402 Scope *scx = sc; | |
2403 int implicit0 = 0; | |
2404 | |
2405 if (sc->fes) | |
2406 { | |
2407 // Find scope of function foreach is in | |
2408 for (; 1; scx = scx->enclosing) | |
2409 { | |
2410 assert(scx); | |
2411 if (scx->func != fd) | |
2412 { fd = scx->func; // fd is now function enclosing foreach | |
2413 break; | |
2414 } | |
2415 } | |
2416 } | |
2417 | |
19 | 2418 Type *tret = fd->type->nextOf(); |
1 | 2419 if (fd->tintro) |
19 | 2420 tret = fd->tintro->nextOf(); |
1 | 2421 Type *tbret = NULL; |
2422 | |
2423 if (tret) | |
2424 tbret = tret->toBasetype(); | |
2425 | |
2426 // main() returns 0, even if it returns void | |
2427 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
2428 { implicit0 = 1; | |
2429 exp = new IntegerExp(0); | |
2430 } | |
2431 | |
2432 if (sc->incontract || scx->incontract) | |
2433 error("return statements cannot be in contracts"); | |
2434 if (sc->tf || scx->tf) | |
2435 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); | |
2436 | |
2437 if (fd->isCtorDeclaration()) | |
2438 { | |
2439 // Constructors implicitly do: | |
2440 // return this; | |
2441 if (exp && exp->op != TOKthis) | |
2442 error("cannot return expression from constructor"); | |
2443 exp = new ThisExp(0); | |
2444 } | |
2445 | |
2446 if (!exp) | |
2447 fd->nrvo_can = 0; | |
2448 | |
2449 if (exp) | |
2450 { | |
2451 fd->hasReturnExp |= 1; | |
2452 | |
2453 exp = exp->semantic(sc); | |
2454 exp = resolveProperties(sc, exp); | |
2455 exp = exp->optimize(WANTvalue); | |
2456 | |
2457 if (fd->nrvo_can && exp->op == TOKvar) | |
2458 { VarExp *ve = (VarExp *)exp; | |
2459 VarDeclaration *v = ve->var->isVarDeclaration(); | |
2460 | |
2461 if (!v || v->isOut() || v->isRef()) | |
2462 fd->nrvo_can = 0; | |
2463 else if (fd->nrvo_var == NULL) | |
2464 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
2465 fd->nrvo_var = v; | |
2466 else | |
2467 fd->nrvo_can = 0; | |
2468 } | |
2469 else if (fd->nrvo_var != v) | |
2470 fd->nrvo_can = 0; | |
2471 } | |
2472 else | |
2473 fd->nrvo_can = 0; | |
2474 | |
2475 if (fd->returnLabel && tbret->ty != Tvoid) | |
2476 { | |
2477 } | |
2478 else if (fd->inferRetType) | |
2479 { | |
19 | 2480 if (fd->type->nextOf()) |
1 | 2481 { |
19 | 2482 if (!exp->type->equals(fd->type->nextOf())) |
1 | 2483 error("mismatched function return type inference of %s and %s", |
19 | 2484 exp->type->toChars(), fd->type->nextOf()->toChars()); |
1 | 2485 } |
2486 else | |
2487 { | |
2488 fd->type->next = exp->type; | |
2489 fd->type = fd->type->semantic(loc, sc); | |
2490 if (!fd->tintro) | |
19 | 2491 { tret = fd->type->nextOf(); |
1 | 2492 tbret = tret->toBasetype(); |
2493 } | |
2494 } | |
2495 } | |
2496 else if (tbret->ty != Tvoid) | |
2497 { | |
2498 exp = exp->implicitCastTo(sc, tret); | |
2499 } | |
2500 } | |
2501 else if (fd->inferRetType) | |
2502 { | |
19 | 2503 if (fd->type->nextOf()) |
1 | 2504 { |
19 | 2505 if (fd->type->nextOf()->ty != Tvoid) |
1 | 2506 error("mismatched function return type inference of void and %s", |
19 | 2507 fd->type->nextOf()->toChars()); |
1 | 2508 } |
2509 else | |
2510 { | |
2511 fd->type->next = Type::tvoid; | |
2512 fd->type = fd->type->semantic(loc, sc); | |
2513 if (!fd->tintro) | |
2514 { tret = Type::tvoid; | |
2515 tbret = tret; | |
2516 } | |
2517 } | |
2518 } | |
2519 else if (tbret->ty != Tvoid) // if non-void return | |
2520 error("return expression expected"); | |
2521 | |
2522 if (sc->fes) | |
2523 { | |
2524 Statement *s; | |
2525 | |
2526 if (exp && !implicit0) | |
2527 { | |
2528 exp = exp->implicitCastTo(sc, tret); | |
2529 } | |
2530 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
2531 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
2532 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
2533 exp->op == TOKstring) | |
2534 { | |
2535 sc->fes->cases.push(this); | |
2536 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
2537 } | |
19 | 2538 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) |
1 | 2539 { |
2540 Statement *s1; | |
2541 Statement *s2; | |
2542 | |
2543 s = new ReturnStatement(0, NULL); | |
2544 sc->fes->cases.push(s); | |
2545 | |
2546 // Construct: { exp; return cases.dim + 1; } | |
2547 s1 = new ExpStatement(loc, exp); | |
2548 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
2549 s = new CompoundStatement(loc, s1, s2); | |
2550 } | |
2551 else | |
2552 { | |
2553 VarExp *v; | |
2554 Statement *s1; | |
2555 Statement *s2; | |
2556 | |
2557 // Construct: return vresult; | |
2558 if (!fd->vresult) | |
2559 { VarDeclaration *v; | |
2560 | |
2561 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
2562 v->noauto = 1; | |
2563 v->semantic(scx); | |
2564 if (!scx->insert(v)) | |
2565 assert(0); | |
2566 v->parent = fd; | |
2567 fd->vresult = v; | |
2568 } | |
2569 | |
2570 v = new VarExp(0, fd->vresult); | |
2571 s = new ReturnStatement(0, v); | |
2572 sc->fes->cases.push(s); | |
2573 | |
2574 // Construct: { vresult = exp; return cases.dim + 1; } | |
2575 v = new VarExp(0, fd->vresult); | |
2576 exp = new AssignExp(loc, v, exp); | |
2577 exp = exp->semantic(sc); | |
2578 s1 = new ExpStatement(loc, exp); | |
2579 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
2580 s = new CompoundStatement(loc, s1, s2); | |
2581 } | |
2582 return s; | |
2583 } | |
2584 | |
2585 if (exp) | |
2586 { | |
2587 if (fd->returnLabel && tbret->ty != Tvoid) | |
2588 { | |
2589 assert(fd->vresult); | |
2590 VarExp *v = new VarExp(0, fd->vresult); | |
2591 | |
2592 exp = new AssignExp(loc, v, exp); | |
2593 exp = exp->semantic(sc); | |
2594 } | |
2595 //exp->dump(0); | |
2596 //exp->print(); | |
2597 exp->checkEscape(); | |
2598 } | |
2599 | |
2600 /* BUG: need to issue an error on: | |
2601 * this | |
2602 * { if (x) return; | |
2603 * super(); | |
2604 * } | |
2605 */ | |
2606 | |
2607 if (sc->callSuper & CSXany_ctor && | |
2608 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
2609 error("return without calling constructor"); | |
2610 | |
2611 sc->callSuper |= CSXreturn; | |
2612 | |
2613 // See if all returns are instead to be replaced with a goto returnLabel; | |
2614 if (fd->returnLabel) | |
2615 { | |
2616 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
2617 | |
2618 gs->label = fd->returnLabel; | |
2619 if (exp) | |
2620 { Statement *s; | |
2621 | |
2622 s = new ExpStatement(0, exp); | |
2623 return new CompoundStatement(loc, s, gs); | |
2624 } | |
2625 return gs; | |
2626 } | |
2627 | |
2628 if (exp && tbret->ty == Tvoid && !fd->isMain()) | |
2629 { Statement *s; | |
2630 | |
2631 s = new ExpStatement(loc, exp); | |
2632 loc = 0; | |
2633 exp = NULL; | |
2634 return new CompoundStatement(loc, s, this); | |
2635 } | |
2636 | |
2637 return this; | |
2638 } | |
2639 | |
2640 int ReturnStatement::fallOffEnd() | |
2641 { | |
2642 return FALSE; | |
2643 } | |
2644 | |
2645 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2646 { | |
2647 buf->printf("return "); | |
2648 if (exp) | |
2649 exp->toCBuffer(buf, hgs); | |
2650 buf->writeByte(';'); | |
2651 buf->writenl(); | |
2652 } | |
2653 | |
2654 /******************************** BreakStatement ***************************/ | |
2655 | |
2656 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
2657 : Statement(loc) | |
2658 { | |
2659 this->ident = ident; | |
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|
2660 this->enclosingtryfinally = NULL; |
1 | 2661 } |
2662 | |
2663 Statement *BreakStatement::syntaxCopy() | |
2664 { | |
2665 BreakStatement *s = new BreakStatement(loc, ident); | |
2666 return s; | |
2667 } | |
2668 | |
2669 Statement *BreakStatement::semantic(Scope *sc) | |
2670 { | |
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|
2671 enclosingtryfinally = sc->tfOfTry; |
1 | 2672 // If: |
2673 // break Identifier; | |
2674 if (ident) | |
2675 { | |
2676 Scope *scx; | |
2677 FuncDeclaration *thisfunc = sc->func; | |
2678 | |
2679 for (scx = sc; scx; scx = scx->enclosing) | |
2680 { | |
2681 LabelStatement *ls; | |
2682 | |
2683 if (scx->func != thisfunc) // if in enclosing function | |
2684 { | |
2685 if (sc->fes) // if this is the body of a foreach | |
2686 { | |
2687 /* Post this statement to the fes, and replace | |
2688 * it with a return value that caller will put into | |
2689 * a switch. Caller will figure out where the break | |
2690 * label actually is. | |
2691 * Case numbers start with 2, not 0, as 0 is continue | |
2692 * and 1 is break. | |
2693 */ | |
2694 Statement *s; | |
2695 sc->fes->cases.push(this); | |
2696 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
2697 return s; | |
2698 } | |
2699 break; // can't break to it | |
2700 } | |
2701 | |
2702 ls = scx->slabel; | |
2703 if (ls && ls->ident == ident) | |
2704 { | |
2705 Statement *s = ls->statement; | |
2706 | |
2707 if (!s->hasBreak()) | |
2708 error("label '%s' has no break", ident->toChars()); | |
2709 if (ls->tf != sc->tf) | |
2710 error("cannot break out of finally block"); | |
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2711 |
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2712 this->target = ls; |
1 | 2713 return this; |
2714 } | |
2715 } | |
2716 error("enclosing label '%s' for break not found", ident->toChars()); | |
2717 } | |
2718 else if (!sc->sbreak) | |
2719 { | |
2720 if (sc->fes) | |
2721 { Statement *s; | |
2722 | |
2723 // Replace break; with return 1; | |
2724 s = new ReturnStatement(0, new IntegerExp(1)); | |
2725 return s; | |
2726 } | |
2727 error("break is not inside a loop or switch"); | |
2728 } | |
2729 return this; | |
2730 } | |
2731 | |
2732 int BreakStatement::fallOffEnd() | |
2733 { | |
2734 return FALSE; | |
2735 } | |
2736 | |
2737 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2738 { | |
2739 buf->writestring("break"); | |
2740 if (ident) | |
2741 { buf->writebyte(' '); | |
2742 buf->writestring(ident->toChars()); | |
2743 } | |
2744 buf->writebyte(';'); | |
2745 buf->writenl(); | |
2746 } | |
2747 | |
2748 /******************************** ContinueStatement ***************************/ | |
2749 | |
2750 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
2751 : Statement(loc) | |
2752 { | |
2753 this->ident = ident; | |
148
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diff
changeset
|
2754 this->enclosingtryfinally = NULL; |
1 | 2755 } |
2756 | |
2757 Statement *ContinueStatement::syntaxCopy() | |
2758 { | |
2759 ContinueStatement *s = new ContinueStatement(loc, ident); | |
2760 return s; | |
2761 } | |
2762 | |
2763 Statement *ContinueStatement::semantic(Scope *sc) | |
2764 { | |
148
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diff
changeset
|
2765 enclosingtryfinally = sc->tfOfTry; |
1 | 2766 //printf("ContinueStatement::semantic() %p\n", this); |
2767 if (ident) | |
2768 { | |
2769 Scope *scx; | |
2770 FuncDeclaration *thisfunc = sc->func; | |
2771 | |
2772 for (scx = sc; scx; scx = scx->enclosing) | |
2773 { | |
2774 LabelStatement *ls; | |
2775 | |
2776 if (scx->func != thisfunc) // if in enclosing function | |
2777 { | |
2778 if (sc->fes) // if this is the body of a foreach | |
2779 { | |
2780 for (; scx; scx = scx->enclosing) | |
2781 { | |
2782 ls = scx->slabel; | |
2783 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
2784 { | |
2785 // Replace continue ident; with return 0; | |
2786 return new ReturnStatement(0, new IntegerExp(0)); | |
2787 } | |
2788 } | |
2789 | |
2790 /* Post this statement to the fes, and replace | |
2791 * it with a return value that caller will put into | |
2792 * a switch. Caller will figure out where the break | |
2793 * label actually is. | |
2794 * Case numbers start with 2, not 0, as 0 is continue | |
2795 * and 1 is break. | |
2796 */ | |
2797 Statement *s; | |
2798 sc->fes->cases.push(this); | |
2799 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
2800 return s; | |
2801 } | |
2802 break; // can't continue to it | |
2803 } | |
2804 | |
2805 ls = scx->slabel; | |
2806 if (ls && ls->ident == ident) | |
2807 { | |
2808 Statement *s = ls->statement; | |
2809 | |
2810 if (!s->hasContinue()) | |
2811 error("label '%s' has no continue", ident->toChars()); | |
2812 if (ls->tf != sc->tf) | |
2813 error("cannot continue out of finally block"); | |
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|
2814 |
8f704cb9969b
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144
diff
changeset
|
2815 this->target = ls; |
1 | 2816 return this; |
2817 } | |
2818 } | |
2819 error("enclosing label '%s' for continue not found", ident->toChars()); | |
2820 } | |
2821 else if (!sc->scontinue) | |
2822 { | |
2823 if (sc->fes) | |
2824 { Statement *s; | |
2825 | |
2826 // Replace continue; with return 0; | |
2827 s = new ReturnStatement(0, new IntegerExp(0)); | |
2828 return s; | |
2829 } | |
2830 error("continue is not inside a loop"); | |
2831 } | |
2832 return this; | |
2833 } | |
2834 | |
2835 int ContinueStatement::fallOffEnd() | |
2836 { | |
2837 return FALSE; | |
2838 } | |
2839 | |
2840 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2841 { | |
2842 buf->writestring("continue"); | |
2843 if (ident) | |
2844 { buf->writebyte(' '); | |
2845 buf->writestring(ident->toChars()); | |
2846 } | |
2847 buf->writebyte(';'); | |
2848 buf->writenl(); | |
2849 } | |
2850 | |
2851 /******************************** SynchronizedStatement ***************************/ | |
2852 | |
2853 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
2854 : Statement(loc) | |
2855 { | |
2856 this->exp = exp; | |
2857 this->body = body; | |
2858 this->esync = NULL; | |
2859 } | |
2860 | |
2861 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
2862 : Statement(loc) | |
2863 { | |
2864 this->exp = NULL; | |
2865 this->body = body; | |
2866 this->esync = esync; | |
2867 } | |
2868 | |
2869 Statement *SynchronizedStatement::syntaxCopy() | |
2870 { | |
2871 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
2872 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
2873 return s; | |
2874 } | |
2875 | |
2876 Statement *SynchronizedStatement::semantic(Scope *sc) | |
2877 { | |
2878 if (exp) | |
2879 { ClassDeclaration *cd; | |
2880 | |
2881 exp = exp->semantic(sc); | |
2882 exp = resolveProperties(sc, exp); | |
2883 cd = exp->type->isClassHandle(); | |
2884 if (!cd) | |
2885 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
2886 else if (cd->isInterfaceDeclaration()) | |
2887 { Type *t = new TypeIdentifier(0, Id::Object); | |
2888 | |
2889 t = t->semantic(0, sc); | |
2890 exp = new CastExp(loc, exp, t); | |
2891 exp = exp->semantic(sc); | |
2892 } | |
2893 } | |
2894 if (body) | |
2895 body = body->semantic(sc); | |
2896 return this; | |
2897 } | |
2898 | |
2899 int SynchronizedStatement::hasBreak() | |
2900 { | |
2901 return FALSE; //TRUE; | |
2902 } | |
2903 | |
2904 int SynchronizedStatement::hasContinue() | |
2905 { | |
2906 return FALSE; //TRUE; | |
2907 } | |
2908 | |
2909 int SynchronizedStatement::usesEH() | |
2910 { | |
2911 return TRUE; | |
2912 } | |
2913 | |
2914 int SynchronizedStatement::fallOffEnd() | |
2915 { | |
2916 return body ? body->fallOffEnd() : TRUE; | |
2917 } | |
2918 | |
2919 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
2920 { | |
2921 buf->writestring("synchronized"); | |
2922 if (exp) | |
2923 { buf->writebyte('('); | |
2924 exp->toCBuffer(buf, hgs); | |
2925 buf->writebyte(')'); | |
2926 } | |
2927 if (body) | |
2928 { | |
2929 buf->writebyte(' '); | |
2930 body->toCBuffer(buf, hgs); | |
2931 } | |
2932 } | |
2933 | |
2934 /******************************** WithStatement ***************************/ | |
2935 | |
2936 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
2937 : Statement(loc) | |
2938 { | |
2939 this->exp = exp; | |
2940 this->body = body; | |
2941 wthis = NULL; | |
2942 } | |
2943 | |
2944 Statement *WithStatement::syntaxCopy() | |
2945 { | |
2946 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
2947 return s; | |
2948 } | |
2949 | |
2950 Statement *WithStatement::semantic(Scope *sc) | |
2951 { ScopeDsymbol *sym; | |
2952 Initializer *init; | |
2953 | |
2954 //printf("WithStatement::semantic()\n"); | |
2955 exp = exp->semantic(sc); | |
2956 exp = resolveProperties(sc, exp); | |
2957 if (exp->op == TOKimport) | |
2958 { ScopeExp *es = (ScopeExp *)exp; | |
2959 | |
2960 sym = es->sds; | |
2961 } | |
2962 else if (exp->op == TOKtype) | |
2963 { TypeExp *es = (TypeExp *)exp; | |
2964 | |
2965 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
2966 if (!sym) | |
2967 { error("%s has no members", es->toChars()); | |
2968 body = body->semantic(sc); | |
2969 return this; | |
2970 } | |
2971 } | |
2972 else | |
2973 { Type *t = exp->type; | |
2974 | |
2975 assert(t); | |
2976 t = t->toBasetype(); | |
2977 if (t->isClassHandle()) | |
2978 { | |
2979 init = new ExpInitializer(loc, exp); | |
2980 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
2981 wthis->semantic(sc); | |
2982 | |
2983 sym = new WithScopeSymbol(this); | |
2984 sym->parent = sc->scopesym; | |
2985 } | |
2986 else if (t->ty == Tstruct) | |
2987 { | |
2988 Expression *e = exp->addressOf(sc); | |
2989 init = new ExpInitializer(loc, e); | |
2990 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
2991 wthis->semantic(sc); | |
2992 sym = new WithScopeSymbol(this); | |
2993 sym->parent = sc->scopesym; | |
2994 } | |
2995 else | |
2996 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
2997 return NULL; | |
2998 } | |
2999 } | |
3000 sc = sc->push(sym); | |
3001 | |
3002 if (body) | |
3003 body = body->semantic(sc); | |
3004 | |
3005 sc->pop(); | |
3006 | |
3007 return this; | |
3008 } | |
3009 | |
3010 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
3011 { | |
3012 buf->writestring("with ("); | |
3013 exp->toCBuffer(buf, hgs); | |
3014 buf->writestring(")\n"); | |
3015 if (body) | |
3016 body->toCBuffer(buf, hgs); | |
3017 } | |
3018 | |
3019 int WithStatement::usesEH() | |
3020 { | |
3021 return body ? body->usesEH() : 0; | |
3022 } | |
3023 | |
3024 int WithStatement::fallOffEnd() | |
3025 { | |
3026 return body ? body->fallOffEnd() : TRUE; | |
3027 } | |
3028 | |
3029 /******************************** TryCatchStatement ***************************/ | |
3030 | |
3031 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
3032 : Statement(loc) | |
3033 { | |
3034 this->body = body; | |
3035 this->catches = catches; | |
3036 } | |
3037 | |
3038 Statement *TryCatchStatement::syntaxCopy() | |
3039 { | |
3040 Array *a = new Array(); | |
3041 a->setDim(catches->dim); | |
3042 for (int i = 0; i < a->dim; i++) | |
3043 { Catch *c; | |
3044 | |
3045 c = (Catch *)catches->data[i]; | |
3046 c = c->syntaxCopy(); | |
3047 a->data[i] = c; | |
3048 } | |
3049 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
3050 return s; | |
3051 } | |
3052 | |
3053 Statement *TryCatchStatement::semantic(Scope *sc) | |
3054 { | |
3055 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
3056 | |
3057 for (int i = 0; i < catches->dim; i++) | |
3058 { Catch *c; | |
3059 | |
3060 c = (Catch *)catches->data[i]; | |
3061 c->semantic(sc); | |
3062 | |
3063 // Determine if current catch 'hides' any previous catches | |
3064 for (int j = 0; j < i; j++) | |
3065 { Catch *cj = (Catch *)catches->data[j]; | |
3066 char *si = c->loc.toChars(); | |
3067 char *sj = cj->loc.toChars(); | |
3068 | |
3069 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
3070 error("catch at %s hides catch at %s", sj, si); | |
3071 } | |
3072 } | |
3073 return this; | |
3074 } | |
3075 | |
3076 int TryCatchStatement::hasBreak() | |
3077 { | |
3078 return FALSE; //TRUE; | |
3079 } | |
3080 | |
3081 int TryCatchStatement::usesEH() | |
3082 { | |
3083 return TRUE; | |
3084 } | |
3085 | |
3086 int TryCatchStatement::fallOffEnd() | |
3087 { | |
3088 int result = FALSE; | |
3089 | |
3090 if (body) | |
3091 result = body->fallOffEnd(); | |
3092 for (int i = 0; i < catches->dim; i++) | |
3093 { Catch *c; | |
3094 | |
3095 c = (Catch *)catches->data[i]; | |
3096 if (c->handler) | |
3097 result |= c->handler->fallOffEnd(); | |
3098 } | |
3099 return result; | |
3100 } | |
3101 | |
3102 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
3103 { | |
3104 buf->writestring("try"); | |
3105 buf->writenl(); | |
3106 if (body) | |
3107 body->toCBuffer(buf, hgs); | |
3108 int i; | |
3109 for (i = 0; i < catches->dim; i++) | |
3110 { | |
3111 Catch *c = (Catch *)catches->data[i]; | |
3112 c->toCBuffer(buf, hgs); | |
3113 } | |
3114 } | |
3115 | |
3116 /******************************** Catch ***************************/ | |
3117 | |
3118 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
3119 { | |
3120 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
3121 this->loc = loc; | |
3122 this->type = t; | |
3123 this->ident = id; | |
3124 this->handler = handler; | |
3125 var = NULL; | |
3126 } | |
3127 | |
3128 Catch *Catch::syntaxCopy() | |
3129 { | |
3130 Catch *c = new Catch(loc, | |
3131 (type ? type->syntaxCopy() : NULL), | |
3132 ident, | |
3133 (handler ? handler->syntaxCopy() : NULL)); | |
3134 return c; | |
3135 } | |
3136 | |
3137 void Catch::semantic(Scope *sc) | |
3138 { ScopeDsymbol *sym; | |
3139 | |
3140 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
3141 | |
3142 #ifndef IN_GCC | |
3143 if (sc->tf) | |
3144 { | |
3145 /* This is because the _d_local_unwind() gets the stack munged | |
3146 * up on this. The workaround is to place any try-catches into | |
3147 * a separate function, and call that. | |
3148 * To fix, have the compiler automatically convert the finally | |
3149 * body into a nested function. | |
3150 */ | |
3151 error(loc, "cannot put catch statement inside finally block"); | |
3152 } | |
3153 #endif | |
3154 | |
3155 sym = new ScopeDsymbol(); | |
3156 sym->parent = sc->scopesym; | |
3157 sc = sc->push(sym); | |
3158 | |
3159 if (!type) | |
3160 type = new TypeIdentifier(0, Id::Object); | |
3161 type = type->semantic(loc, sc); | |
3162 if (!type->toBasetype()->isClassHandle()) | |
3163 error("can only catch class objects, not '%s'", type->toChars()); | |
3164 else if (ident) | |
3165 { | |
3166 var = new VarDeclaration(loc, type, ident, NULL); | |
3167 var->parent = sc->parent; | |
3168 sc->insert(var); | |
3169 } | |
3170 handler = handler->semantic(sc); | |
3171 | |
3172 sc->pop(); | |
3173 } | |
3174 | |
3175 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
3176 { | |
3177 buf->writestring("catch"); | |
3178 if (type) | |
3179 { buf->writebyte('('); | |
3180 type->toCBuffer(buf, ident, hgs); | |
3181 buf->writebyte(')'); | |
3182 } | |
3183 buf->writenl(); | |
3184 buf->writebyte('{'); | |
3185 buf->writenl(); | |
3186 handler->toCBuffer(buf, hgs); | |
3187 buf->writebyte('}'); | |
3188 buf->writenl(); | |
3189 } | |
3190 | |
3191 /****************************** TryFinallyStatement ***************************/ | |
3192 | |
3193 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
3194 : Statement(loc) | |
3195 { | |
3196 this->body = body; | |
3197 this->finalbody = finalbody; | |
148
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parents:
145
diff
changeset
|
3198 this->enclosingtryfinally = NULL; |
1 | 3199 } |
3200 | |
3201 Statement *TryFinallyStatement::syntaxCopy() | |
3202 { | |
3203 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
3204 body->syntaxCopy(), finalbody->syntaxCopy()); | |
3205 return s; | |
3206 } | |
3207 | |
3208 Statement *TryFinallyStatement::semantic(Scope *sc) | |
3209 { | |
3210 //printf("TryFinallyStatement::semantic()\n"); | |
145
8f704cb9969b
[svn r150] fixes #16 and #17, implements GotoCaseStatement
ChristianK
parents:
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|
3211 |
148
86d3bb8ca33e
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
ChristianK
parents:
145
diff
changeset
|
3212 enclosingtryfinally = sc->tfOfTry; |
145
8f704cb9969b
[svn r150] fixes #16 and #17, implements GotoCaseStatement
ChristianK
parents:
144
diff
changeset
|
3213 sc->tfOfTry = this; |
1 | 3214 body = body->semantic(sc); |
148
86d3bb8ca33e
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
ChristianK
parents:
145
diff
changeset
|
3215 sc->tfOfTry = enclosingtryfinally; |
145
8f704cb9969b
[svn r150] fixes #16 and #17, implements GotoCaseStatement
ChristianK
parents:
144
diff
changeset
|
3216 |
1 | 3217 sc = sc->push(); |
3218 sc->tf = this; | |
3219 sc->sbreak = NULL; | |
3220 sc->scontinue = NULL; // no break or continue out of finally block | |
3221 finalbody = finalbody->semantic(sc); | |
3222 sc->pop(); | |
3223 return this; | |
3224 } | |
3225 | |
3226 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
3227 { | |
3228 buf->printf("try\n{\n"); | |
3229 body->toCBuffer(buf, hgs); | |
3230 buf->printf("}\nfinally\n{\n"); | |
3231 finalbody->toCBuffer(buf, hgs); | |
3232 buf->writeByte('}'); | |
3233 buf->writenl(); | |
3234 } | |
3235 | |
3236 int TryFinallyStatement::hasBreak() | |
3237 { | |
3238 return FALSE; //TRUE; | |
3239 } | |
3240 | |
3241 int TryFinallyStatement::hasContinue() | |
3242 { | |
3243 return FALSE; //TRUE; | |
3244 } | |
3245 | |
3246 int TryFinallyStatement::usesEH() | |
3247 { | |
3248 return TRUE; | |
3249 } | |
3250 | |
3251 int TryFinallyStatement::fallOffEnd() | |
3252 { int result; | |
3253 | |
3254 result = body->fallOffEnd(); | |
3255 // if (finalbody) | |
3256 // result = finalbody->fallOffEnd(); | |
3257 return result; | |
3258 } | |
3259 | |
3260 /****************************** OnScopeStatement ***************************/ | |
3261 | |
3262 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
3263 : Statement(loc) | |
3264 { | |
3265 this->tok = tok; | |
3266 this->statement = statement; | |
3267 } | |
3268 | |
3269 Statement *OnScopeStatement::syntaxCopy() | |
3270 { | |
3271 OnScopeStatement *s = new OnScopeStatement(loc, | |
3272 tok, statement->syntaxCopy()); | |
3273 return s; | |
3274 } | |
3275 | |
3276 Statement *OnScopeStatement::semantic(Scope *sc) | |
3277 { | |
3278 /* semantic is called on results of scopeCode() */ | |
3279 return this; | |
3280 } | |
3281 | |
3282 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
3283 { | |
3284 buf->writestring(Token::toChars(tok)); | |
3285 buf->writebyte(' '); | |
3286 statement->toCBuffer(buf, hgs); | |
3287 } | |
3288 | |
3289 int OnScopeStatement::usesEH() | |
3290 { | |
3291 return (tok != TOKon_scope_success); | |
3292 } | |
3293 | |
3294 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
3295 { | |
3296 //printf("OnScopeStatement::scopeCode()\n"); | |
3297 //print(); | |
3298 *sentry = NULL; | |
3299 *sexception = NULL; | |
3300 *sfinally = NULL; | |
3301 switch (tok) | |
3302 { | |
3303 case TOKon_scope_exit: | |
3304 *sfinally = statement; | |
3305 break; | |
3306 | |
3307 case TOKon_scope_failure: | |
3308 *sexception = statement; | |
3309 break; | |
3310 | |
3311 case TOKon_scope_success: | |
3312 { | |
3313 /* Create: | |
3314 * sentry: int x = 0; | |
3315 * sexception: x = 1; | |
3316 * sfinally: if (!x) statement; | |
3317 */ | |
3318 static int num; | |
3319 char name[5 + sizeof(num) * 3 + 1]; | |
3320 sprintf(name, "__osf%d", ++num); | |
3321 Identifier *id = Lexer::idPool(name); | |
3322 | |
3323 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
3324 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
3325 *sentry = new DeclarationStatement(loc, v); | |
3326 | |
3327 Expression *e = new IntegerExp(1); | |
3328 e = new AssignExp(0, new VarExp(0, v), e); | |
3329 *sexception = new ExpStatement(0, e); | |
3330 | |
3331 e = new VarExp(0, v); | |
3332 e = new NotExp(0, e); | |
3333 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
3334 | |
3335 break; | |
3336 } | |
3337 | |
3338 default: | |
3339 assert(0); | |
3340 } | |
3341 } | |
3342 | |
3343 /******************************** ThrowStatement ***************************/ | |
3344 | |
3345 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
3346 : Statement(loc) | |
3347 { | |
3348 this->exp = exp; | |
3349 } | |
3350 | |
3351 Statement *ThrowStatement::syntaxCopy() | |
3352 { | |
3353 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
3354 return s; | |
3355 } | |
3356 | |
3357 Statement *ThrowStatement::semantic(Scope *sc) | |
3358 { | |
3359 //printf("ThrowStatement::semantic()\n"); | |
3360 | |
3361 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
3362 fd->hasReturnExp |= 2; | |
3363 | |
3364 if (sc->incontract) | |
3365 error("Throw statements cannot be in contracts"); | |
3366 exp = exp->semantic(sc); | |
3367 exp = resolveProperties(sc, exp); | |
3368 if (!exp->type->toBasetype()->isClassHandle()) | |
3369 error("can only throw class objects, not type %s", exp->type->toChars()); | |
3370 return this; | |
3371 } | |
3372 | |
3373 int ThrowStatement::fallOffEnd() | |
3374 { | |
3375 return FALSE; | |
3376 } | |
3377 | |
3378 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
3379 { | |
3380 buf->printf("throw "); | |
3381 exp->toCBuffer(buf, hgs); | |
3382 buf->writeByte(';'); | |
3383 buf->writenl(); | |
3384 } | |
3385 | |
3386 /******************************** VolatileStatement **************************/ | |
3387 | |
3388 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
3389 : Statement(loc) | |
3390 { | |
3391 this->statement = statement; | |
3392 } | |
3393 | |
3394 Statement *VolatileStatement::syntaxCopy() | |
3395 { | |
3396 VolatileStatement *s = new VolatileStatement(loc, | |
3397 statement ? statement->syntaxCopy() : NULL); | |
3398 return s; | |
3399 } | |
3400 | |
3401 Statement *VolatileStatement::semantic(Scope *sc) | |
3402 { | |
3403 statement = statement ? statement->semantic(sc) : NULL; | |
3404 return this; | |
3405 } | |
3406 | |
3407 Statements *VolatileStatement::flatten(Scope *sc) | |
3408 { | |
3409 Statements *a; | |
3410 | |
3411 a = statement ? statement->flatten(sc) : NULL; | |
3412 if (a) | |
3413 { for (int i = 0; i < a->dim; i++) | |
3414 { Statement *s = (Statement *)a->data[i]; | |
3415 | |
3416 s = new VolatileStatement(loc, s); | |
3417 a->data[i] = s; | |
3418 } | |
3419 } | |
3420 | |
3421 return a; | |
3422 } | |
3423 | |
3424 int VolatileStatement::fallOffEnd() | |
3425 { | |
3426 return statement ? statement->fallOffEnd() : TRUE; | |
3427 } | |
3428 | |
3429 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
3430 { | |
3431 buf->writestring("volatile"); | |
3432 if (statement) | |
3433 { if (statement->isScopeStatement()) | |
3434 buf->writenl(); | |
3435 else | |
3436 buf->writebyte(' '); | |
3437 statement->toCBuffer(buf, hgs); | |
3438 } | |
3439 } | |
3440 | |
3441 | |
3442 /******************************** GotoStatement ***************************/ | |
3443 | |
3444 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
3445 : Statement(loc) | |
3446 { | |
3447 this->ident = ident; | |
3448 this->label = NULL; | |
3449 this->tf = NULL; | |
148
86d3bb8ca33e
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
ChristianK
parents:
145
diff
changeset
|
3450 this->enclosingtryfinally = NULL; |
1 | 3451 } |
3452 | |
3453 Statement *GotoStatement::syntaxCopy() | |
3454 { | |
3455 GotoStatement *s = new GotoStatement(loc, ident); | |
3456 return s; | |
3457 } | |
3458 | |
3459 Statement *GotoStatement::semantic(Scope *sc) | |
3460 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
3461 | |
3462 //printf("GotoStatement::semantic()\n"); | |
3463 tf = sc->tf; | |
148
86d3bb8ca33e
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
ChristianK
parents:
145
diff
changeset
|
3464 enclosingtryfinally = sc->tfOfTry; |
1 | 3465 label = fd->searchLabel(ident); |
3466 if (!label->statement && sc->fes) | |
3467 { | |
3468 /* Either the goto label is forward referenced or it | |
3469 * is in the function that the enclosing foreach is in. | |
3470 * Can't know yet, so wrap the goto in a compound statement | |
3471 * so we can patch it later, and add it to a 'look at this later' | |
3472 * list. | |
3473 */ | |
3474 Statements *a = new Statements(); | |
3475 Statement *s; | |
3476 | |
3477 a->push(this); | |
3478 s = new CompoundStatement(loc, a); | |
3479 sc->fes->gotos.push(s); // 'look at this later' list | |
3480 return s; | |
3481 } | |
3482 if (label->statement && label->statement->tf != sc->tf) | |
3483 error("cannot goto in or out of finally block"); | |
3484 return this; | |
3485 } | |
3486 | |
3487 int GotoStatement::fallOffEnd() | |
3488 { | |
3489 return FALSE; | |
3490 } | |
3491 | |
3492 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
3493 { | |
3494 buf->writestring("goto "); | |
3495 buf->writestring(ident->toChars()); | |
3496 buf->writebyte(';'); | |
3497 buf->writenl(); | |
3498 } | |
3499 | |
3500 /******************************** LabelStatement ***************************/ | |
3501 | |
3502 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
3503 : Statement(loc) | |
3504 { | |
3505 this->ident = ident; | |
3506 this->statement = statement; | |
3507 this->tf = NULL; | |
148
86d3bb8ca33e
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
ChristianK
parents:
145
diff
changeset
|
3508 this->enclosingtryfinally = NULL; |
1 | 3509 this->lblock = NULL; |
86
fd32135dca3e
[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!
lindquist
parents:
37
diff
changeset
|
3510 this->isReturnLabel = 0; |
37
77cdca8c210f
[svn r41] new'd dynamic arrays are now initialized with the element type's default initializer.
lindquist
parents:
34
diff
changeset
|
3511 this->llvmBB = NULL; |
1 | 3512 } |
3513 | |
3514 Statement *LabelStatement::syntaxCopy() | |
3515 { | |
3516 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
3517 return s; | |
3518 } | |
3519 | |
3520 Statement *LabelStatement::semantic(Scope *sc) | |
3521 { LabelDsymbol *ls; | |
3522 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
3523 | |
3524 //printf("LabelStatement::semantic()\n"); | |
3525 ls = fd->searchLabel(ident); | |
3526 if (ls->statement) | |
3527 error("Label '%s' already defined", ls->toChars()); | |
3528 else | |
3529 ls->statement = this; | |
3530 tf = sc->tf; | |
148
86d3bb8ca33e
[svn r154] renaming enclosingtry to enclosingtryfinally to distinguish it from enclosingtrycatch, which will probably need to be added for exception handling
ChristianK
parents:
145
diff
changeset
|
3531 enclosingtryfinally = sc->tfOfTry; |
1 | 3532 sc = sc->push(); |
3533 sc->scopesym = sc->enclosing->scopesym; | |
3534 sc->callSuper |= CSXlabel; | |
3535 sc->slabel = this; | |
3536 if (statement) | |
3537 statement = statement->semantic(sc); | |
3538 sc->pop(); | |
3539 return this; | |
3540 } | |
3541 | |
3542 Statements *LabelStatement::flatten(Scope *sc) | |
3543 { | |
3544 Statements *a = NULL; | |
3545 | |
3546 if (statement) | |
3547 { | |
3548 a = statement->flatten(sc); | |
3549 if (a) | |
3550 { | |
3551 if (!a->dim) | |
3552 { | |
3553 a->push(new ExpStatement(loc, NULL)); | |
3554 } | |
3555 Statement *s = (Statement *)a->data[0]; | |
3556 | |
3557 s = new LabelStatement(loc, ident, s); | |
3558 a->data[0] = s; | |
3559 } | |
3560 } | |
3561 | |
3562 return a; | |
3563 } | |
3564 | |
3565 | |
3566 int LabelStatement::usesEH() | |
3567 { | |
3568 return statement ? statement->usesEH() : FALSE; | |
3569 } | |
3570 | |
3571 int LabelStatement::fallOffEnd() | |
3572 { | |
3573 return statement ? statement->fallOffEnd() : TRUE; | |
3574 } | |
3575 | |
3576 int LabelStatement::comeFrom() | |
3577 { | |
3578 //printf("LabelStatement::comeFrom()\n"); | |
3579 return TRUE; | |
3580 } | |
3581 | |
3582 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
3583 { | |
3584 buf->writestring(ident->toChars()); | |
3585 buf->writebyte(':'); | |
3586 buf->writenl(); | |
3587 if (statement) | |
3588 statement->toCBuffer(buf, hgs); | |
3589 } | |
3590 | |
3591 | |
3592 /******************************** LabelDsymbol ***************************/ | |
3593 | |
3594 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
3595 : Dsymbol(ident) | |
3596 { | |
3597 statement = NULL; | |
3598 #if IN_GCC | |
3599 asmLabelNum = 0; | |
3600 #endif | |
3601 } | |
3602 | |
3603 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
3604 { | |
3605 return this; | |
3606 } | |
3607 | |
3608 |