Mercurial > projects > ldc
annotate dmd/parse.c @ 159:5acec6b2eef8 trunk
[svn r175] merged dmd 1.029
author | ChristianK |
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date | Thu, 01 May 2008 15:15:28 +0200 |
parents | 0ab29b838084 |
children | 092468448d25 |
rev | line source |
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1 | 1 |
2 // Compiler implementation of the D programming language | |
3 // Copyright (c) 1999-2007 by Digital Mars | |
4 // All Rights Reserved | |
5 // written by Walter Bright | |
6 // http://www.digitalmars.com | |
7 // License for redistribution is by either the Artistic License | |
8 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
9 // See the included readme.txt for details. | |
10 | |
11 #include <stdio.h> | |
12 #include <assert.h> | |
13 | |
14 #include "mem.h" | |
15 #include "lexer.h" | |
16 #include "parse.h" | |
17 #include "init.h" | |
18 #include "attrib.h" | |
19 #include "cond.h" | |
20 #include "mtype.h" | |
21 #include "template.h" | |
22 #include "staticassert.h" | |
23 #include "expression.h" | |
24 #include "statement.h" | |
25 #include "module.h" | |
26 #include "dsymbol.h" | |
27 #include "import.h" | |
28 #include "declaration.h" | |
29 #include "aggregate.h" | |
30 #include "enum.h" | |
31 #include "id.h" | |
32 #include "version.h" | |
33 | |
34 // How multiple declarations are parsed. | |
35 // If 1, treat as C. | |
36 // If 0, treat: | |
37 // int *p, i; | |
38 // as: | |
39 // int* p; | |
40 // int* i; | |
41 #define CDECLSYNTAX 0 | |
42 | |
43 // Support C cast syntax: | |
44 // (type)(expression) | |
45 #define CCASTSYNTAX 1 | |
46 | |
47 // Support C array declarations, such as | |
48 // int a[3][4]; | |
49 #define CARRAYDECL 1 | |
50 | |
51 // Support left-to-right array declarations | |
52 #define LTORARRAYDECL 1 | |
53 | |
54 | |
55 Parser::Parser(Module *module, unsigned char *base, unsigned length, int doDocComment) | |
56 : Lexer(module, base, 0, length, doDocComment, 0) | |
57 { | |
58 //printf("Parser::Parser()\n"); | |
59 md = NULL; | |
60 linkage = LINKd; | |
61 endloc = 0; | |
62 inBrackets = 0; | |
63 //nextToken(); // start up the scanner | |
64 } | |
65 | |
66 Array *Parser::parseModule() | |
67 { | |
68 Array *decldefs; | |
69 | |
70 // ModuleDeclation leads off | |
71 if (token.value == TOKmodule) | |
72 { | |
73 unsigned char *comment = token.blockComment; | |
74 | |
75 nextToken(); | |
76 if (token.value != TOKidentifier) | |
77 { error("Identifier expected following module"); | |
78 goto Lerr; | |
79 } | |
80 else | |
81 { | |
82 Array *a = NULL; | |
83 Identifier *id; | |
84 | |
85 id = token.ident; | |
86 while (nextToken() == TOKdot) | |
87 { | |
88 if (!a) | |
89 a = new Array(); | |
90 a->push(id); | |
91 nextToken(); | |
92 if (token.value != TOKidentifier) | |
93 { error("Identifier expected following package"); | |
94 goto Lerr; | |
95 } | |
96 id = token.ident; | |
97 } | |
98 | |
99 md = new ModuleDeclaration(a, id); | |
100 | |
101 if (token.value != TOKsemicolon) | |
102 error("';' expected following module declaration instead of %s", token.toChars()); | |
103 nextToken(); | |
104 addComment(mod, comment); | |
105 } | |
106 } | |
107 | |
108 decldefs = parseDeclDefs(0); | |
109 if (token.value != TOKeof) | |
110 { error("unrecognized declaration"); | |
111 goto Lerr; | |
112 } | |
113 return decldefs; | |
114 | |
115 Lerr: | |
116 while (token.value != TOKsemicolon && token.value != TOKeof) | |
117 nextToken(); | |
118 nextToken(); | |
119 return new Array(); | |
120 } | |
121 | |
122 Array *Parser::parseDeclDefs(int once) | |
123 { Dsymbol *s; | |
124 Array *decldefs; | |
125 Array *a; | |
126 Array *aelse; | |
127 enum PROT prot; | |
128 unsigned stc; | |
129 Condition *condition; | |
130 unsigned char *comment; | |
131 | |
132 //printf("Parser::parseDeclDefs()\n"); | |
133 decldefs = new Array(); | |
134 do | |
135 { | |
136 comment = token.blockComment; | |
137 switch (token.value) | |
138 { | |
139 case TOKenum: | |
140 s = parseEnum(); | |
141 break; | |
142 | |
143 case TOKstruct: | |
144 case TOKunion: | |
145 case TOKclass: | |
146 case TOKinterface: | |
147 s = parseAggregate(); | |
148 break; | |
149 | |
150 case TOKimport: | |
151 s = parseImport(decldefs, 0); | |
152 break; | |
153 | |
154 case TOKtemplate: | |
155 s = (Dsymbol *)parseTemplateDeclaration(); | |
156 break; | |
157 | |
158 case TOKmixin: | |
159 { Loc loc = this->loc; | |
160 if (peek(&token)->value == TOKlparen) | |
161 { // mixin(string) | |
162 nextToken(); | |
163 check(TOKlparen, "mixin"); | |
164 Expression *e = parseAssignExp(); | |
165 check(TOKrparen); | |
166 check(TOKsemicolon); | |
167 s = new CompileDeclaration(loc, e); | |
168 break; | |
169 } | |
170 s = parseMixin(); | |
171 break; | |
172 } | |
173 | |
174 CASE_BASIC_TYPES: | |
175 case TOKalias: | |
176 case TOKtypedef: | |
177 case TOKidentifier: | |
178 case TOKtypeof: | |
179 case TOKdot: | |
180 Ldeclaration: | |
181 a = parseDeclarations(); | |
182 decldefs->append(a); | |
183 continue; | |
184 | |
185 case TOKthis: | |
186 s = parseCtor(); | |
187 break; | |
188 | |
189 case TOKtilde: | |
190 s = parseDtor(); | |
191 break; | |
192 | |
193 case TOKinvariant: | |
194 #if 1 | |
195 s = parseInvariant(); | |
196 #else | |
197 if (peek(&token)->value == TOKlcurly) | |
198 s = parseInvariant(); | |
199 else | |
200 { | |
201 stc = STCinvariant; | |
202 goto Lstc; | |
203 } | |
204 #endif | |
205 break; | |
206 | |
207 case TOKunittest: | |
208 s = parseUnitTest(); | |
209 break; | |
210 | |
211 case TOKnew: | |
212 s = parseNew(); | |
213 break; | |
214 | |
215 case TOKdelete: | |
216 s = parseDelete(); | |
217 break; | |
218 | |
219 case TOKeof: | |
220 case TOKrcurly: | |
221 return decldefs; | |
222 | |
223 case TOKstatic: | |
224 nextToken(); | |
225 if (token.value == TOKthis) | |
226 s = parseStaticCtor(); | |
227 else if (token.value == TOKtilde) | |
228 s = parseStaticDtor(); | |
229 else if (token.value == TOKassert) | |
230 s = parseStaticAssert(); | |
231 else if (token.value == TOKif) | |
232 { condition = parseStaticIfCondition(); | |
233 a = parseBlock(); | |
234 aelse = NULL; | |
235 if (token.value == TOKelse) | |
236 { nextToken(); | |
237 aelse = parseBlock(); | |
238 } | |
239 s = new StaticIfDeclaration(condition, a, aelse); | |
240 break; | |
241 } | |
242 else if (token.value == TOKimport) | |
243 { | |
244 s = parseImport(decldefs, 1); | |
245 } | |
246 else | |
247 { stc = STCstatic; | |
248 goto Lstc2; | |
249 } | |
250 break; | |
251 | |
252 case TOKconst: stc = STCconst; goto Lstc; | |
253 case TOKfinal: stc = STCfinal; goto Lstc; | |
254 case TOKauto: stc = STCauto; goto Lstc; | |
255 case TOKscope: stc = STCscope; goto Lstc; | |
256 case TOKoverride: stc = STCoverride; goto Lstc; | |
257 case TOKabstract: stc = STCabstract; goto Lstc; | |
258 case TOKsynchronized: stc = STCsynchronized; goto Lstc; | |
259 case TOKdeprecated: stc = STCdeprecated; goto Lstc; | |
260 | |
261 Lstc: | |
262 nextToken(); | |
263 Lstc2: | |
264 switch (token.value) | |
265 { | |
266 case TOKconst: stc |= STCconst; goto Lstc; | |
267 case TOKfinal: stc |= STCfinal; goto Lstc; | |
268 case TOKauto: stc |= STCauto; goto Lstc; | |
269 case TOKscope: stc |= STCscope; goto Lstc; | |
270 case TOKoverride: stc |= STCoverride; goto Lstc; | |
271 case TOKabstract: stc |= STCabstract; goto Lstc; | |
272 case TOKsynchronized: stc |= STCsynchronized; goto Lstc; | |
273 case TOKdeprecated: stc |= STCdeprecated; goto Lstc; | |
274 //case TOKinvariant: stc |= STCinvariant; goto Lstc; | |
275 default: | |
276 break; | |
277 } | |
278 | |
279 /* Look for auto initializers: | |
280 * storage_class identifier = initializer; | |
281 */ | |
282 if (token.value == TOKidentifier && | |
283 peek(&token)->value == TOKassign) | |
284 { | |
285 while (1) | |
286 { | |
287 Identifier *ident = token.ident; | |
288 nextToken(); | |
289 nextToken(); | |
290 Initializer *init = parseInitializer(); | |
291 VarDeclaration *v = new VarDeclaration(loc, NULL, ident, init); | |
292 v->storage_class = stc; | |
293 s = v; | |
294 if (token.value == TOKsemicolon) | |
295 { | |
296 nextToken(); | |
297 } | |
298 else if (token.value == TOKcomma) | |
299 { | |
300 nextToken(); | |
301 if (token.value == TOKidentifier && | |
302 peek(&token)->value == TOKassign) | |
303 { | |
304 decldefs->push(s); | |
305 addComment(s, comment); | |
306 continue; | |
307 } | |
308 else | |
309 error("Identifier expected following comma"); | |
310 } | |
311 else | |
312 error("semicolon expected following auto declaration, not '%s'", token.toChars()); | |
313 break; | |
314 } | |
315 } | |
316 else | |
317 { a = parseBlock(); | |
318 s = new StorageClassDeclaration(stc, a); | |
319 } | |
320 break; | |
321 | |
322 case TOKextern: | |
323 if (peek(&token)->value != TOKlparen) | |
324 { stc = STCextern; | |
325 goto Lstc; | |
326 } | |
327 { | |
328 enum LINK linksave = linkage; | |
329 linkage = parseLinkage(); | |
330 a = parseBlock(); | |
331 s = new LinkDeclaration(linkage, a); | |
332 linkage = linksave; | |
333 break; | |
334 } | |
335 case TOKprivate: prot = PROTprivate; goto Lprot; | |
336 case TOKpackage: prot = PROTpackage; goto Lprot; | |
337 case TOKprotected: prot = PROTprotected; goto Lprot; | |
338 case TOKpublic: prot = PROTpublic; goto Lprot; | |
339 case TOKexport: prot = PROTexport; goto Lprot; | |
340 | |
341 Lprot: | |
342 nextToken(); | |
343 a = parseBlock(); | |
344 s = new ProtDeclaration(prot, a); | |
345 break; | |
346 | |
347 case TOKalign: | |
348 { unsigned n; | |
349 | |
350 s = NULL; | |
351 nextToken(); | |
352 if (token.value == TOKlparen) | |
353 { | |
354 nextToken(); | |
355 if (token.value == TOKint32v) | |
356 n = (unsigned)token.uns64value; | |
357 else | |
358 { error("integer expected, not %s", token.toChars()); | |
359 n = 1; | |
360 } | |
361 nextToken(); | |
362 check(TOKrparen); | |
363 } | |
364 else | |
365 n = global.structalign; // default | |
366 | |
367 a = parseBlock(); | |
368 s = new AlignDeclaration(n, a); | |
369 break; | |
370 } | |
371 | |
372 case TOKpragma: | |
373 { Identifier *ident; | |
374 Expressions *args = NULL; | |
375 | |
376 nextToken(); | |
377 check(TOKlparen); | |
378 if (token.value != TOKidentifier) | |
379 { error("pragma(identifier expected"); | |
380 goto Lerror; | |
381 } | |
382 ident = token.ident; | |
383 nextToken(); | |
384 if (token.value == TOKcomma) | |
385 args = parseArguments(); // pragma(identifier, args...) | |
386 else | |
387 check(TOKrparen); // pragma(identifier) | |
388 | |
389 if (token.value == TOKsemicolon) | |
390 a = NULL; | |
391 else | |
392 a = parseBlock(); | |
393 s = new PragmaDeclaration(loc, ident, args, a); | |
394 break; | |
395 } | |
396 | |
397 case TOKdebug: | |
398 nextToken(); | |
399 if (token.value == TOKassign) | |
400 { | |
401 nextToken(); | |
402 if (token.value == TOKidentifier) | |
403 s = new DebugSymbol(loc, token.ident); | |
404 else if (token.value == TOKint32v) | |
405 s = new DebugSymbol(loc, (unsigned)token.uns64value); | |
406 else | |
407 { error("identifier or integer expected, not %s", token.toChars()); | |
408 s = NULL; | |
409 } | |
410 nextToken(); | |
411 if (token.value != TOKsemicolon) | |
412 error("semicolon expected"); | |
413 nextToken(); | |
414 break; | |
415 } | |
416 | |
417 condition = parseDebugCondition(); | |
418 goto Lcondition; | |
419 | |
420 case TOKversion: | |
421 nextToken(); | |
422 if (token.value == TOKassign) | |
423 { | |
424 nextToken(); | |
425 if (token.value == TOKidentifier) | |
426 s = new VersionSymbol(loc, token.ident); | |
427 else if (token.value == TOKint32v) | |
428 s = new VersionSymbol(loc, (unsigned)token.uns64value); | |
429 else | |
430 { error("identifier or integer expected, not %s", token.toChars()); | |
431 s = NULL; | |
432 } | |
433 nextToken(); | |
434 if (token.value != TOKsemicolon) | |
435 error("semicolon expected"); | |
436 nextToken(); | |
437 break; | |
438 } | |
439 condition = parseVersionCondition(); | |
440 goto Lcondition; | |
441 | |
442 Lcondition: | |
443 a = parseBlock(); | |
444 aelse = NULL; | |
445 if (token.value == TOKelse) | |
446 { nextToken(); | |
447 aelse = parseBlock(); | |
448 } | |
449 s = new ConditionalDeclaration(condition, a, aelse); | |
450 break; | |
451 | |
452 case TOKsemicolon: // empty declaration | |
453 nextToken(); | |
454 continue; | |
455 | |
456 default: | |
457 error("Declaration expected, not '%s'",token.toChars()); | |
458 Lerror: | |
459 while (token.value != TOKsemicolon && token.value != TOKeof) | |
460 nextToken(); | |
461 nextToken(); | |
462 s = NULL; | |
463 continue; | |
464 } | |
465 if (s) | |
466 { decldefs->push(s); | |
467 addComment(s, comment); | |
468 } | |
469 } while (!once); | |
470 return decldefs; | |
471 } | |
472 | |
473 | |
474 /******************************************** | |
475 * Parse declarations after an align, protection, or extern decl. | |
476 */ | |
477 | |
478 Array *Parser::parseBlock() | |
479 { | |
480 Array *a = NULL; | |
481 Dsymbol *s; | |
482 | |
483 //printf("parseBlock()\n"); | |
484 switch (token.value) | |
485 { | |
486 case TOKsemicolon: | |
487 error("declaration expected following attribute, not ';'"); | |
488 nextToken(); | |
489 break; | |
490 | |
491 case TOKlcurly: | |
492 nextToken(); | |
493 a = parseDeclDefs(0); | |
494 if (token.value != TOKrcurly) | |
495 { /* { */ | |
496 error("matching '}' expected, not %s", token.toChars()); | |
497 } | |
498 else | |
499 nextToken(); | |
500 break; | |
501 | |
502 case TOKcolon: | |
503 nextToken(); | |
504 #if 0 | |
505 a = NULL; | |
506 #else | |
507 a = parseDeclDefs(0); // grab declarations up to closing curly bracket | |
508 #endif | |
509 break; | |
510 | |
511 default: | |
512 a = parseDeclDefs(1); | |
513 break; | |
514 } | |
515 return a; | |
516 } | |
517 | |
518 /********************************** | |
519 * Parse a static assertion. | |
520 */ | |
521 | |
522 StaticAssert *Parser::parseStaticAssert() | |
523 { | |
524 Loc loc = this->loc; | |
525 Expression *exp; | |
526 Expression *msg = NULL; | |
527 | |
528 //printf("parseStaticAssert()\n"); | |
529 nextToken(); | |
530 check(TOKlparen); | |
531 exp = parseAssignExp(); | |
532 if (token.value == TOKcomma) | |
533 { nextToken(); | |
534 msg = parseAssignExp(); | |
535 } | |
536 check(TOKrparen); | |
537 check(TOKsemicolon); | |
538 return new StaticAssert(loc, exp, msg); | |
539 } | |
540 | |
541 | |
542 /*********************************** | |
543 * Parse extern (linkage) | |
544 * The parser is on the 'extern' token. | |
545 */ | |
546 | |
547 enum LINK Parser::parseLinkage() | |
548 { | |
549 enum LINK link = LINKdefault; | |
550 nextToken(); | |
551 assert(token.value == TOKlparen); | |
552 nextToken(); | |
553 if (token.value == TOKidentifier) | |
554 { Identifier *id = token.ident; | |
555 | |
556 nextToken(); | |
557 if (id == Id::Windows) | |
558 link = LINKwindows; | |
559 else if (id == Id::Pascal) | |
560 link = LINKpascal; | |
561 else if (id == Id::D) | |
562 link = LINKd; | |
563 else if (id == Id::C) | |
564 { | |
565 link = LINKc; | |
566 if (token.value == TOKplusplus) | |
567 { link = LINKcpp; | |
568 nextToken(); | |
569 } | |
570 } | |
571 else if (id == Id::System) | |
572 { | |
573 #if _WIN32 | |
574 link = LINKwindows; | |
575 #else | |
576 link = LINKc; | |
577 #endif | |
578 } | |
579 else | |
580 { | |
581 error("valid linkage identifiers are D, C, C++, Pascal, Windows, System"); | |
582 link = LINKd; | |
583 } | |
584 } | |
585 else | |
586 { | |
587 link = LINKd; // default | |
588 } | |
589 check(TOKrparen); | |
590 return link; | |
591 } | |
592 | |
593 /************************************** | |
594 * Parse a debug conditional | |
595 */ | |
596 | |
597 Condition *Parser::parseDebugCondition() | |
598 { | |
599 Condition *c; | |
600 | |
601 if (token.value == TOKlparen) | |
602 { | |
603 nextToken(); | |
604 unsigned level = 1; | |
605 Identifier *id = NULL; | |
606 | |
607 if (token.value == TOKidentifier) | |
608 id = token.ident; | |
609 else if (token.value == TOKint32v) | |
610 level = (unsigned)token.uns64value; | |
611 else | |
612 error("identifier or integer expected, not %s", token.toChars()); | |
613 nextToken(); | |
614 check(TOKrparen); | |
615 c = new DebugCondition(mod, level, id); | |
616 } | |
617 else | |
618 c = new DebugCondition(mod, 1, NULL); | |
619 return c; | |
620 | |
621 } | |
622 | |
623 /************************************** | |
624 * Parse a version conditional | |
625 */ | |
626 | |
627 Condition *Parser::parseVersionCondition() | |
628 { | |
629 Condition *c; | |
630 unsigned level = 1; | |
631 Identifier *id = NULL; | |
632 | |
633 if (token.value == TOKlparen) | |
634 { | |
635 nextToken(); | |
636 if (token.value == TOKidentifier) | |
637 id = token.ident; | |
638 else if (token.value == TOKint32v) | |
639 level = (unsigned)token.uns64value; | |
159 | 640 #if V2 |
641 /* Allow: | |
642 * version (unittest) | |
643 * even though unittest is a keyword | |
644 */ | |
645 else if (token.value == TOKunittest) | |
646 id = Lexer::idPool(Token::toChars(TOKunittest)); | |
647 #endif | |
1 | 648 else |
649 error("identifier or integer expected, not %s", token.toChars()); | |
650 nextToken(); | |
651 check(TOKrparen); | |
652 | |
653 } | |
654 else | |
655 error("(condition) expected following version"); | |
656 c = new VersionCondition(mod, level, id); | |
657 return c; | |
658 | |
659 } | |
660 | |
661 /*********************************************** | |
662 * static if (expression) | |
663 * body | |
664 * else | |
665 * body | |
666 */ | |
667 | |
668 Condition *Parser::parseStaticIfCondition() | |
669 { Expression *exp; | |
670 Condition *condition; | |
671 Array *aif; | |
672 Array *aelse; | |
673 Loc loc = this->loc; | |
674 | |
675 nextToken(); | |
676 if (token.value == TOKlparen) | |
677 { | |
678 nextToken(); | |
679 exp = parseAssignExp(); | |
680 check(TOKrparen); | |
681 } | |
682 else | |
683 { error("(expression) expected following static if"); | |
684 exp = NULL; | |
685 } | |
686 condition = new StaticIfCondition(loc, exp); | |
687 return condition; | |
688 } | |
689 | |
690 | |
691 /***************************************** | |
692 * Parse a constructor definition: | |
693 * this(arguments) { body } | |
694 * Current token is 'this'. | |
695 */ | |
696 | |
697 CtorDeclaration *Parser::parseCtor() | |
698 { | |
699 CtorDeclaration *f; | |
700 Arguments *arguments; | |
701 int varargs; | |
702 Loc loc = this->loc; | |
703 | |
704 nextToken(); | |
705 arguments = parseParameters(&varargs); | |
706 f = new CtorDeclaration(loc, 0, arguments, varargs); | |
707 parseContracts(f); | |
708 return f; | |
709 } | |
710 | |
711 /***************************************** | |
712 * Parse a destructor definition: | |
713 * ~this() { body } | |
714 * Current token is '~'. | |
715 */ | |
716 | |
717 DtorDeclaration *Parser::parseDtor() | |
718 { | |
719 DtorDeclaration *f; | |
720 Loc loc = this->loc; | |
721 | |
722 nextToken(); | |
723 check(TOKthis); | |
724 check(TOKlparen); | |
725 check(TOKrparen); | |
726 | |
727 f = new DtorDeclaration(loc, 0); | |
728 parseContracts(f); | |
729 return f; | |
730 } | |
731 | |
732 /***************************************** | |
733 * Parse a static constructor definition: | |
734 * static this() { body } | |
735 * Current token is 'this'. | |
736 */ | |
737 | |
738 StaticCtorDeclaration *Parser::parseStaticCtor() | |
739 { | |
740 StaticCtorDeclaration *f; | |
741 Loc loc = this->loc; | |
742 | |
743 nextToken(); | |
744 check(TOKlparen); | |
745 check(TOKrparen); | |
746 | |
747 f = new StaticCtorDeclaration(loc, 0); | |
748 parseContracts(f); | |
749 return f; | |
750 } | |
751 | |
752 /***************************************** | |
753 * Parse a static destructor definition: | |
754 * static ~this() { body } | |
755 * Current token is '~'. | |
756 */ | |
757 | |
758 StaticDtorDeclaration *Parser::parseStaticDtor() | |
759 { | |
760 StaticDtorDeclaration *f; | |
761 Loc loc = this->loc; | |
762 | |
763 nextToken(); | |
764 check(TOKthis); | |
765 check(TOKlparen); | |
766 check(TOKrparen); | |
767 | |
768 f = new StaticDtorDeclaration(loc, 0); | |
769 parseContracts(f); | |
770 return f; | |
771 } | |
772 | |
773 /***************************************** | |
774 * Parse an invariant definition: | |
775 * invariant { body } | |
776 * Current token is 'invariant'. | |
777 */ | |
778 | |
779 InvariantDeclaration *Parser::parseInvariant() | |
780 { | |
781 InvariantDeclaration *f; | |
782 Loc loc = this->loc; | |
783 | |
784 nextToken(); | |
785 if (token.value == TOKlparen) // optional () | |
786 { | |
787 nextToken(); | |
788 check(TOKrparen); | |
789 } | |
790 | |
791 f = new InvariantDeclaration(loc, 0); | |
792 f->fbody = parseStatement(PScurly); | |
793 return f; | |
794 } | |
795 | |
796 /***************************************** | |
797 * Parse a unittest definition: | |
798 * unittest { body } | |
799 * Current token is 'unittest'. | |
800 */ | |
801 | |
802 UnitTestDeclaration *Parser::parseUnitTest() | |
803 { | |
804 UnitTestDeclaration *f; | |
805 Statement *body; | |
806 Loc loc = this->loc; | |
807 | |
808 nextToken(); | |
809 | |
810 body = parseStatement(PScurly); | |
811 | |
812 f = new UnitTestDeclaration(loc, this->loc); | |
813 f->fbody = body; | |
814 return f; | |
815 } | |
816 | |
817 /***************************************** | |
818 * Parse a new definition: | |
819 * new(arguments) { body } | |
820 * Current token is 'new'. | |
821 */ | |
822 | |
823 NewDeclaration *Parser::parseNew() | |
824 { | |
825 NewDeclaration *f; | |
826 Arguments *arguments; | |
827 int varargs; | |
828 Loc loc = this->loc; | |
829 | |
830 nextToken(); | |
831 arguments = parseParameters(&varargs); | |
832 f = new NewDeclaration(loc, 0, arguments, varargs); | |
833 parseContracts(f); | |
834 return f; | |
835 } | |
836 | |
837 /***************************************** | |
838 * Parse a delete definition: | |
839 * delete(arguments) { body } | |
840 * Current token is 'delete'. | |
841 */ | |
842 | |
843 DeleteDeclaration *Parser::parseDelete() | |
844 { | |
845 DeleteDeclaration *f; | |
846 Arguments *arguments; | |
847 int varargs; | |
848 Loc loc = this->loc; | |
849 | |
850 nextToken(); | |
851 arguments = parseParameters(&varargs); | |
852 if (varargs) | |
853 error("... not allowed in delete function parameter list"); | |
854 f = new DeleteDeclaration(loc, 0, arguments); | |
855 parseContracts(f); | |
856 return f; | |
857 } | |
858 | |
859 /********************************************** | |
860 * Parse parameter list. | |
861 */ | |
862 | |
863 Arguments *Parser::parseParameters(int *pvarargs) | |
864 { | |
865 Arguments *arguments = new Arguments(); | |
866 int varargs = 0; | |
867 int hasdefault = 0; | |
868 | |
869 check(TOKlparen); | |
870 while (1) | |
871 { Type *tb; | |
872 Identifier *ai; | |
873 Type *at; | |
874 Argument *a; | |
875 unsigned storageClass; | |
876 Expression *ae; | |
877 | |
878 ai = NULL; | |
879 storageClass = STCin; // parameter is "in" by default | |
880 switch (token.value) | |
881 { | |
882 case TOKrparen: | |
883 break; | |
884 | |
885 case TOKdotdotdot: | |
886 varargs = 1; | |
887 nextToken(); | |
888 break; | |
889 | |
890 case TOKin: | |
891 storageClass = STCin; | |
892 nextToken(); | |
893 goto L1; | |
894 | |
895 case TOKout: | |
896 storageClass = STCout; | |
897 nextToken(); | |
898 goto L1; | |
899 | |
900 case TOKinout: | |
901 case TOKref: | |
902 storageClass = STCref; | |
903 nextToken(); | |
904 goto L1; | |
905 | |
906 case TOKlazy: | |
907 storageClass = STClazy; | |
908 nextToken(); | |
909 goto L1; | |
910 | |
911 default: | |
912 L1: | |
913 tb = parseBasicType(); | |
914 at = parseDeclarator(tb, &ai); | |
915 ae = NULL; | |
916 if (token.value == TOKassign) // = defaultArg | |
917 { nextToken(); | |
918 ae = parseAssignExp(); | |
919 hasdefault = 1; | |
920 } | |
921 else | |
922 { if (hasdefault) | |
923 error("default argument expected for %s", | |
924 ai ? ai->toChars() : at->toChars()); | |
925 } | |
926 if (token.value == TOKdotdotdot) | |
927 { /* This is: | |
928 * at ai ... | |
929 */ | |
930 | |
931 if (storageClass & (STCout | STCref)) | |
932 error("variadic argument cannot be out or ref"); | |
933 varargs = 2; | |
934 a = new Argument(storageClass, at, ai, ae); | |
935 arguments->push(a); | |
936 nextToken(); | |
937 break; | |
938 } | |
939 a = new Argument(storageClass, at, ai, ae); | |
940 arguments->push(a); | |
941 if (token.value == TOKcomma) | |
942 { nextToken(); | |
943 continue; | |
944 } | |
945 break; | |
946 } | |
947 break; | |
948 } | |
949 check(TOKrparen); | |
950 *pvarargs = varargs; | |
951 return arguments; | |
952 } | |
953 | |
954 | |
955 /************************************* | |
956 */ | |
957 | |
958 EnumDeclaration *Parser::parseEnum() | |
959 { EnumDeclaration *e; | |
960 Identifier *id; | |
961 Type *t; | |
962 Loc loc = this->loc; | |
963 | |
964 //printf("Parser::parseEnum()\n"); | |
965 nextToken(); | |
966 if (token.value == TOKidentifier) | |
967 { id = token.ident; | |
968 nextToken(); | |
969 } | |
970 else | |
971 id = NULL; | |
972 | |
973 if (token.value == TOKcolon) | |
974 { | |
975 nextToken(); | |
976 t = parseBasicType(); | |
977 } | |
978 else | |
979 t = NULL; | |
980 | |
981 e = new EnumDeclaration(loc, id, t); | |
982 if (token.value == TOKsemicolon && id) | |
983 nextToken(); | |
984 else if (token.value == TOKlcurly) | |
985 { | |
986 //printf("enum definition\n"); | |
987 e->members = new Array(); | |
988 nextToken(); | |
989 unsigned char *comment = token.blockComment; | |
990 while (token.value != TOKrcurly) | |
991 { | |
992 if (token.value == TOKidentifier) | |
993 { EnumMember *em; | |
994 Expression *value; | |
995 Identifier *ident; | |
996 | |
997 loc = this->loc; | |
998 ident = token.ident; | |
999 value = NULL; | |
1000 nextToken(); | |
1001 if (token.value == TOKassign) | |
1002 { | |
1003 nextToken(); | |
1004 value = parseAssignExp(); | |
1005 } | |
1006 em = new EnumMember(loc, ident, value); | |
1007 e->members->push(em); | |
1008 if (token.value == TOKrcurly) | |
1009 ; | |
1010 else | |
1011 { addComment(em, comment); | |
1012 comment = NULL; | |
1013 check(TOKcomma); | |
1014 } | |
1015 addComment(em, comment); | |
1016 comment = token.blockComment; | |
1017 } | |
1018 else | |
1019 { error("enum member expected"); | |
1020 nextToken(); | |
1021 } | |
1022 } | |
1023 nextToken(); | |
1024 } | |
1025 else | |
1026 error("enum declaration is invalid"); | |
1027 | |
1028 return e; | |
1029 } | |
1030 | |
1031 Dsymbol *Parser::parseAggregate() | |
1032 { AggregateDeclaration *a = NULL; | |
1033 int anon = 0; | |
1034 enum TOK tok; | |
1035 Identifier *id; | |
1036 TemplateParameters *tpl = NULL; | |
1037 | |
1038 //printf("Parser::parseAggregate()\n"); | |
1039 tok = token.value; | |
1040 nextToken(); | |
1041 if (token.value != TOKidentifier) | |
1042 { id = NULL; | |
1043 } | |
1044 else | |
1045 { id = token.ident; | |
1046 nextToken(); | |
1047 | |
1048 if (token.value == TOKlparen) | |
1049 { // Class template declaration. | |
1050 | |
1051 // Gather template parameter list | |
1052 tpl = parseTemplateParameterList(); | |
1053 } | |
1054 } | |
1055 | |
1056 Loc loc = this->loc; | |
1057 switch (tok) | |
1058 { case TOKclass: | |
1059 case TOKinterface: | |
1060 { | |
1061 if (!id) | |
1062 error("anonymous classes not allowed"); | |
1063 | |
1064 // Collect base class(es) | |
1065 BaseClasses *baseclasses = NULL; | |
1066 if (token.value == TOKcolon) | |
1067 { | |
1068 nextToken(); | |
1069 baseclasses = parseBaseClasses(); | |
1070 | |
1071 if (token.value != TOKlcurly) | |
1072 error("members expected"); | |
1073 } | |
1074 | |
1075 if (tok == TOKclass) | |
1076 a = new ClassDeclaration(loc, id, baseclasses); | |
1077 else | |
1078 a = new InterfaceDeclaration(loc, id, baseclasses); | |
1079 break; | |
1080 } | |
1081 | |
1082 case TOKstruct: | |
1083 if (id) | |
1084 a = new StructDeclaration(loc, id); | |
1085 else | |
1086 anon = 1; | |
1087 break; | |
1088 | |
1089 case TOKunion: | |
1090 if (id) | |
1091 a = new UnionDeclaration(loc, id); | |
1092 else | |
1093 anon = 2; | |
1094 break; | |
1095 | |
1096 default: | |
1097 assert(0); | |
1098 break; | |
1099 } | |
1100 if (a && token.value == TOKsemicolon) | |
1101 { nextToken(); | |
1102 } | |
1103 else if (token.value == TOKlcurly) | |
1104 { | |
1105 //printf("aggregate definition\n"); | |
1106 nextToken(); | |
1107 Array *decl = parseDeclDefs(0); | |
1108 if (token.value != TOKrcurly) | |
1109 error("} expected following member declarations in aggregate"); | |
1110 nextToken(); | |
1111 if (anon) | |
1112 { | |
1113 /* Anonymous structs/unions are more like attributes. | |
1114 */ | |
1115 return new AnonDeclaration(loc, anon - 1, decl); | |
1116 } | |
1117 else | |
1118 a->members = decl; | |
1119 } | |
1120 else | |
1121 { | |
1122 error("{ } expected following aggregate declaration"); | |
1123 a = new StructDeclaration(loc, NULL); | |
1124 } | |
1125 | |
1126 if (tpl) | |
1127 { Array *decldefs; | |
1128 TemplateDeclaration *tempdecl; | |
1129 | |
1130 // Wrap a template around the aggregate declaration | |
1131 decldefs = new Array(); | |
1132 decldefs->push(a); | |
1133 tempdecl = new TemplateDeclaration(loc, id, tpl, decldefs); | |
1134 return tempdecl; | |
1135 } | |
1136 | |
1137 return a; | |
1138 } | |
1139 | |
1140 /******************************************* | |
1141 */ | |
1142 | |
1143 BaseClasses *Parser::parseBaseClasses() | |
1144 { | |
1145 enum PROT protection = PROTpublic; | |
1146 BaseClasses *baseclasses = new BaseClasses(); | |
1147 | |
1148 for (; 1; nextToken()) | |
1149 { | |
1150 switch (token.value) | |
1151 { | |
1152 case TOKidentifier: | |
1153 break; | |
1154 case TOKprivate: | |
1155 protection = PROTprivate; | |
1156 continue; | |
1157 case TOKpackage: | |
1158 protection = PROTpackage; | |
1159 continue; | |
1160 case TOKprotected: | |
1161 protection = PROTprotected; | |
1162 continue; | |
1163 case TOKpublic: | |
1164 protection = PROTpublic; | |
1165 continue; | |
1166 default: | |
1167 error("base classes expected instead of %s", token.toChars()); | |
1168 return NULL; | |
1169 } | |
1170 BaseClass *b = new BaseClass(parseBasicType(), protection); | |
1171 baseclasses->push(b); | |
1172 if (token.value != TOKcomma) | |
1173 break; | |
1174 protection = PROTpublic; | |
1175 } | |
1176 return baseclasses; | |
1177 } | |
1178 | |
1179 /************************************** | |
1180 * Parse a TemplateDeclaration. | |
1181 */ | |
1182 | |
1183 TemplateDeclaration *Parser::parseTemplateDeclaration() | |
1184 { | |
1185 TemplateDeclaration *tempdecl; | |
1186 Identifier *id; | |
1187 TemplateParameters *tpl; | |
1188 Array *decldefs; | |
1189 Loc loc = this->loc; | |
1190 | |
1191 nextToken(); | |
1192 if (token.value != TOKidentifier) | |
1193 { error("TemplateIdentifier expected following template"); | |
1194 goto Lerr; | |
1195 } | |
1196 id = token.ident; | |
1197 nextToken(); | |
1198 tpl = parseTemplateParameterList(); | |
1199 if (!tpl) | |
1200 goto Lerr; | |
1201 | |
1202 if (token.value != TOKlcurly) | |
1203 { error("members of template declaration expected"); | |
1204 goto Lerr; | |
1205 } | |
1206 else | |
1207 { | |
1208 nextToken(); | |
1209 decldefs = parseDeclDefs(0); | |
1210 if (token.value != TOKrcurly) | |
1211 { error("template member expected"); | |
1212 goto Lerr; | |
1213 } | |
1214 nextToken(); | |
1215 } | |
1216 | |
1217 tempdecl = new TemplateDeclaration(loc, id, tpl, decldefs); | |
1218 return tempdecl; | |
1219 | |
1220 Lerr: | |
1221 return NULL; | |
1222 } | |
1223 | |
1224 /****************************************** | |
1225 * Parse template parameter list. | |
1226 */ | |
1227 | |
1228 TemplateParameters *Parser::parseTemplateParameterList() | |
1229 { | |
139
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parents:
92
diff
changeset
|
1230 TemplateParameters *tpl = new TemplateParameters(); |
1 | 1231 |
1232 if (token.value != TOKlparen) | |
1233 { error("parenthesized TemplateParameterList expected following TemplateIdentifier"); | |
1234 goto Lerr; | |
1235 } | |
1236 nextToken(); | |
1237 | |
1238 // Get array of TemplateParameters | |
1239 if (token.value != TOKrparen) | |
1240 { int isvariadic = 0; | |
1241 | |
1242 while (1) | |
1243 { TemplateParameter *tp; | |
1244 Identifier *tp_ident = NULL; | |
1245 Type *tp_spectype = NULL; | |
1246 Type *tp_valtype = NULL; | |
1247 Type *tp_defaulttype = NULL; | |
1248 Expression *tp_specvalue = NULL; | |
1249 Expression *tp_defaultvalue = NULL; | |
1250 Token *t; | |
1251 | |
1252 // Get TemplateParameter | |
1253 | |
1254 // First, look ahead to see if it is a TypeParameter or a ValueParameter | |
1255 t = peek(&token); | |
1256 if (token.value == TOKalias) | |
1257 { // AliasParameter | |
1258 nextToken(); | |
1259 if (token.value != TOKidentifier) | |
1260 { error("Identifier expected for template parameter"); | |
1261 goto Lerr; | |
1262 } | |
1263 tp_ident = token.ident; | |
1264 nextToken(); | |
1265 if (token.value == TOKcolon) // : Type | |
1266 { | |
1267 nextToken(); | |
1268 tp_spectype = parseBasicType(); | |
1269 tp_spectype = parseDeclarator(tp_spectype, NULL); | |
1270 } | |
1271 if (token.value == TOKassign) // = Type | |
1272 { | |
1273 nextToken(); | |
1274 tp_defaulttype = parseBasicType(); | |
1275 tp_defaulttype = parseDeclarator(tp_defaulttype, NULL); | |
1276 } | |
1277 tp = new TemplateAliasParameter(loc, tp_ident, tp_spectype, tp_defaulttype); | |
1278 } | |
1279 else if (t->value == TOKcolon || t->value == TOKassign || | |
1280 t->value == TOKcomma || t->value == TOKrparen) | |
1281 { // TypeParameter | |
1282 if (token.value != TOKidentifier) | |
1283 { error("Identifier expected for template parameter"); | |
1284 goto Lerr; | |
1285 } | |
1286 tp_ident = token.ident; | |
1287 nextToken(); | |
1288 if (token.value == TOKcolon) // : Type | |
1289 { | |
1290 nextToken(); | |
1291 tp_spectype = parseBasicType(); | |
1292 tp_spectype = parseDeclarator(tp_spectype, NULL); | |
1293 } | |
1294 if (token.value == TOKassign) // = Type | |
1295 { | |
1296 nextToken(); | |
1297 tp_defaulttype = parseBasicType(); | |
1298 tp_defaulttype = parseDeclarator(tp_defaulttype, NULL); | |
1299 } | |
1300 tp = new TemplateTypeParameter(loc, tp_ident, tp_spectype, tp_defaulttype); | |
1301 } | |
1302 else if (token.value == TOKidentifier && t->value == TOKdotdotdot) | |
1303 { // ident... | |
1304 if (isvariadic) | |
1305 error("variadic template parameter must be last"); | |
1306 isvariadic = 1; | |
1307 tp_ident = token.ident; | |
1308 nextToken(); | |
1309 nextToken(); | |
1310 tp = new TemplateTupleParameter(loc, tp_ident); | |
1311 } | |
1312 else | |
1313 { // ValueParameter | |
1314 tp_valtype = parseBasicType(); | |
1315 tp_valtype = parseDeclarator(tp_valtype, &tp_ident); | |
1316 if (!tp_ident) | |
1317 { | |
1318 error("no identifier for template value parameter"); | |
139
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[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
92
diff
changeset
|
1319 tp_ident = new Identifier("error", TOKidentifier); |
1 | 1320 } |
1321 if (token.value == TOKcolon) // : CondExpression | |
1322 { | |
1323 nextToken(); | |
1324 tp_specvalue = parseCondExp(); | |
1325 } | |
1326 if (token.value == TOKassign) // = CondExpression | |
1327 { | |
1328 nextToken(); | |
1329 tp_defaultvalue = parseCondExp(); | |
1330 } | |
1331 tp = new TemplateValueParameter(loc, tp_ident, tp_valtype, tp_specvalue, tp_defaultvalue); | |
1332 } | |
1333 tpl->push(tp); | |
1334 if (token.value != TOKcomma) | |
1335 break; | |
1336 nextToken(); | |
1337 } | |
1338 } | |
1339 check(TOKrparen); | |
139
0ab29b838084
[svn r143] Fixed: a few bugs in debug information, still only line info, but should be correct files now :)
lindquist
parents:
92
diff
changeset
|
1340 Lerr: |
1 | 1341 return tpl; |
1342 } | |
1343 | |
1344 /****************************************** | |
1345 * Parse template mixin. | |
1346 * mixin Foo; | |
1347 * mixin Foo!(args); | |
1348 * mixin a.b.c!(args).Foo!(args); | |
1349 * mixin Foo!(args) identifier; | |
1350 * mixin typeof(expr).identifier!(args); | |
1351 */ | |
1352 | |
1353 Dsymbol *Parser::parseMixin() | |
1354 { | |
1355 TemplateMixin *tm; | |
1356 Identifier *id; | |
1357 Type *tqual; | |
1358 Objects *tiargs; | |
1359 Array *idents; | |
1360 | |
1361 //printf("parseMixin()\n"); | |
1362 nextToken(); | |
1363 tqual = NULL; | |
1364 if (token.value == TOKdot) | |
1365 { | |
1366 id = Id::empty; | |
1367 } | |
1368 else | |
1369 { | |
1370 if (token.value == TOKtypeof) | |
1371 { Expression *exp; | |
1372 | |
1373 nextToken(); | |
1374 check(TOKlparen); | |
1375 exp = parseExpression(); | |
1376 check(TOKrparen); | |
1377 tqual = new TypeTypeof(loc, exp); | |
1378 check(TOKdot); | |
1379 } | |
1380 if (token.value != TOKidentifier) | |
1381 { | |
1382 error("identifier expected, not %s", token.toChars()); | |
1383 goto Lerr; | |
1384 } | |
1385 id = token.ident; | |
1386 nextToken(); | |
1387 } | |
1388 | |
1389 idents = new Array(); | |
1390 while (1) | |
1391 { | |
1392 tiargs = NULL; | |
1393 if (token.value == TOKnot) | |
1394 { | |
1395 nextToken(); | |
1396 tiargs = parseTemplateArgumentList(); | |
1397 } | |
1398 | |
1399 if (token.value != TOKdot) | |
1400 break; | |
1401 | |
1402 if (tiargs) | |
1403 { TemplateInstance *tempinst = new TemplateInstance(loc, id); | |
1404 tempinst->tiargs = tiargs; | |
1405 id = (Identifier *)tempinst; | |
1406 tiargs = NULL; | |
1407 } | |
1408 idents->push(id); | |
1409 | |
1410 nextToken(); | |
1411 if (token.value != TOKidentifier) | |
1412 { error("identifier expected following '.' instead of '%s'", token.toChars()); | |
1413 break; | |
1414 } | |
1415 id = token.ident; | |
1416 nextToken(); | |
1417 } | |
1418 idents->push(id); | |
1419 | |
1420 if (token.value == TOKidentifier) | |
1421 { | |
1422 id = token.ident; | |
1423 nextToken(); | |
1424 } | |
1425 else | |
1426 id = NULL; | |
1427 | |
1428 tm = new TemplateMixin(loc, id, tqual, idents, tiargs); | |
1429 if (token.value != TOKsemicolon) | |
1430 error("';' expected after mixin"); | |
1431 nextToken(); | |
1432 | |
1433 return tm; | |
1434 | |
1435 Lerr: | |
1436 return NULL; | |
1437 } | |
1438 | |
1439 /****************************************** | |
1440 * Parse template argument list. | |
1441 * Input: | |
1442 * current token is opening '(' | |
1443 * Output: | |
1444 * current token is one after closing ')' | |
1445 */ | |
1446 | |
1447 Objects *Parser::parseTemplateArgumentList() | |
1448 { | |
1449 //printf("Parser::parseTemplateArgumentList()\n"); | |
1450 Objects *tiargs = new Objects(); | |
1451 if (token.value != TOKlparen) | |
1452 { error("!(TemplateArgumentList) expected following TemplateIdentifier"); | |
1453 return tiargs; | |
1454 } | |
1455 nextToken(); | |
1456 | |
1457 // Get TemplateArgumentList | |
1458 if (token.value != TOKrparen) | |
1459 { | |
1460 while (1) | |
1461 { | |
1462 // See if it is an Expression or a Type | |
1463 if (isDeclaration(&token, 0, TOKreserved, NULL)) | |
1464 { // Type | |
1465 Type *ta; | |
1466 | |
1467 // Get TemplateArgument | |
1468 ta = parseBasicType(); | |
1469 ta = parseDeclarator(ta, NULL); | |
1470 tiargs->push(ta); | |
1471 } | |
1472 else | |
1473 { // Expression | |
1474 Expression *ea; | |
1475 | |
1476 ea = parseAssignExp(); | |
1477 tiargs->push(ea); | |
1478 } | |
1479 if (token.value != TOKcomma) | |
1480 break; | |
1481 nextToken(); | |
1482 } | |
1483 } | |
1484 check(TOKrparen, "template argument list"); | |
1485 return tiargs; | |
1486 } | |
1487 | |
1488 Import *Parser::parseImport(Array *decldefs, int isstatic) | |
1489 { Import *s; | |
1490 Identifier *id; | |
1491 Identifier *aliasid = NULL; | |
1492 Array *a; | |
1493 Loc loc; | |
1494 | |
1495 //printf("Parser::parseImport()\n"); | |
1496 do | |
1497 { | |
1498 L1: | |
1499 nextToken(); | |
1500 if (token.value != TOKidentifier) | |
1501 { error("Identifier expected following import"); | |
1502 break; | |
1503 } | |
1504 | |
1505 loc = this->loc; | |
1506 a = NULL; | |
1507 id = token.ident; | |
1508 nextToken(); | |
1509 if (!aliasid && token.value == TOKassign) | |
1510 { | |
1511 aliasid = id; | |
1512 goto L1; | |
1513 } | |
1514 while (token.value == TOKdot) | |
1515 { | |
1516 if (!a) | |
1517 a = new Array(); | |
1518 a->push(id); | |
1519 nextToken(); | |
1520 if (token.value != TOKidentifier) | |
1521 { error("Identifier expected following package"); | |
1522 break; | |
1523 } | |
1524 id = token.ident; | |
1525 nextToken(); | |
1526 } | |
1527 | |
1528 s = new Import(loc, a, token.ident, aliasid, isstatic); | |
1529 decldefs->push(s); | |
1530 | |
1531 /* Look for | |
1532 * : alias=name, alias=name; | |
1533 * syntax. | |
1534 */ | |
1535 if (token.value == TOKcolon) | |
1536 { | |
1537 do | |
1538 { Identifier *name; | |
1539 Identifier *alias; | |
1540 | |
1541 nextToken(); | |
1542 if (token.value != TOKidentifier) | |
1543 { error("Identifier expected following :"); | |
1544 break; | |
1545 } | |
1546 alias = token.ident; | |
1547 nextToken(); | |
1548 if (token.value == TOKassign) | |
1549 { | |
1550 nextToken(); | |
1551 if (token.value != TOKidentifier) | |
1552 { error("Identifier expected following %s=", alias->toChars()); | |
1553 break; | |
1554 } | |
1555 name = token.ident; | |
1556 nextToken(); | |
1557 } | |
1558 else | |
1559 { name = alias; | |
1560 alias = NULL; | |
1561 } | |
1562 s->addAlias(name, alias); | |
1563 } while (token.value == TOKcomma); | |
1564 break; // no comma-separated imports of this form | |
1565 } | |
1566 | |
1567 aliasid = NULL; | |
1568 } while (token.value == TOKcomma); | |
1569 | |
1570 if (token.value == TOKsemicolon) | |
1571 nextToken(); | |
1572 else | |
1573 { | |
1574 error("';' expected"); | |
1575 nextToken(); | |
1576 } | |
1577 | |
1578 return NULL; | |
1579 } | |
1580 | |
1581 Type *Parser::parseBasicType() | |
1582 { Type *t; | |
1583 Identifier *id; | |
1584 TypeQualified *tid; | |
1585 TemplateInstance *tempinst; | |
1586 | |
1587 //printf("parseBasicType()\n"); | |
1588 switch (token.value) | |
1589 { | |
1590 CASE_BASIC_TYPES_X(t): | |
1591 nextToken(); | |
1592 break; | |
1593 | |
1594 case TOKidentifier: | |
1595 id = token.ident; | |
1596 nextToken(); | |
1597 if (token.value == TOKnot) | |
1598 { | |
1599 nextToken(); | |
1600 tempinst = new TemplateInstance(loc, id); | |
1601 tempinst->tiargs = parseTemplateArgumentList(); | |
1602 tid = new TypeInstance(loc, tempinst); | |
1603 goto Lident2; | |
1604 } | |
1605 Lident: | |
1606 tid = new TypeIdentifier(loc, id); | |
1607 Lident2: | |
1608 while (token.value == TOKdot) | |
1609 { nextToken(); | |
1610 if (token.value != TOKidentifier) | |
1611 { error("identifier expected following '.' instead of '%s'", token.toChars()); | |
1612 break; | |
1613 } | |
1614 id = token.ident; | |
1615 nextToken(); | |
1616 if (token.value == TOKnot) | |
1617 { | |
1618 nextToken(); | |
1619 tempinst = new TemplateInstance(loc, id); | |
1620 tempinst->tiargs = parseTemplateArgumentList(); | |
1621 tid->addIdent((Identifier *)tempinst); | |
1622 } | |
1623 else | |
1624 tid->addIdent(id); | |
1625 } | |
1626 t = tid; | |
1627 break; | |
1628 | |
1629 case TOKdot: | |
1630 id = Id::empty; | |
1631 goto Lident; | |
1632 | |
1633 case TOKtypeof: | |
1634 { Expression *exp; | |
1635 | |
1636 nextToken(); | |
1637 check(TOKlparen); | |
1638 exp = parseExpression(); | |
1639 check(TOKrparen); | |
1640 tid = new TypeTypeof(loc, exp); | |
1641 goto Lident2; | |
1642 } | |
1643 | |
1644 default: | |
1645 error("basic type expected, not %s", token.toChars()); | |
1646 t = Type::tint32; | |
1647 break; | |
1648 } | |
1649 return t; | |
1650 } | |
1651 | |
1652 Type *Parser::parseBasicType2(Type *t) | |
1653 { | |
1654 Type *ts; | |
1655 Type *ta; | |
1656 | |
1657 //printf("parseBasicType2()\n"); | |
1658 while (1) | |
1659 { | |
1660 switch (token.value) | |
1661 { | |
1662 case TOKmul: | |
1663 t = new TypePointer(t); | |
1664 nextToken(); | |
1665 continue; | |
1666 | |
1667 case TOKlbracket: | |
1668 #if LTORARRAYDECL | |
1669 // Handle []. Make sure things like | |
1670 // int[3][1] a; | |
1671 // is (array[1] of array[3] of int) | |
1672 nextToken(); | |
1673 if (token.value == TOKrbracket) | |
1674 { | |
1675 t = new TypeDArray(t); // [] | |
1676 nextToken(); | |
1677 } | |
1678 else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
1679 { // It's an associative array declaration | |
1680 Type *index; | |
1681 | |
1682 //printf("it's an associative array\n"); | |
1683 index = parseBasicType(); | |
1684 index = parseDeclarator(index, NULL); // [ type ] | |
1685 t = new TypeAArray(t, index); | |
1686 check(TOKrbracket); | |
1687 } | |
1688 else | |
1689 { | |
1690 //printf("it's [expression]\n"); | |
1691 inBrackets++; | |
1692 Expression *e = parseExpression(); // [ expression ] | |
1693 if (token.value == TOKslice) | |
1694 { Expression *e2; | |
1695 | |
1696 nextToken(); | |
1697 e2 = parseExpression(); // [ exp .. exp ] | |
1698 t = new TypeSlice(t, e, e2); | |
1699 } | |
1700 else | |
1701 t = new TypeSArray(t,e); | |
1702 inBrackets--; | |
1703 check(TOKrbracket); | |
1704 } | |
1705 continue; | |
1706 #else | |
1707 // Handle []. Make sure things like | |
1708 // int[3][1] a; | |
1709 // is (array[3] of array[1] of int) | |
1710 ts = t; | |
1711 while (token.value == TOKlbracket) | |
1712 { | |
1713 nextToken(); | |
1714 if (token.value == TOKrbracket) | |
1715 { | |
1716 ta = new TypeDArray(t); // [] | |
1717 nextToken(); | |
1718 } | |
1719 else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
1720 { // It's an associative array declaration | |
1721 Type *index; | |
1722 | |
1723 //printf("it's an associative array\n"); | |
1724 index = parseBasicType(); | |
1725 index = parseDeclarator(index, NULL); // [ type ] | |
1726 check(TOKrbracket); | |
1727 ta = new TypeAArray(t, index); | |
1728 } | |
1729 else | |
1730 { | |
1731 //printf("it's [expression]\n"); | |
1732 Expression *e = parseExpression(); // [ expression ] | |
1733 ta = new TypeSArray(t,e); | |
1734 check(TOKrbracket); | |
1735 } | |
1736 Type **pt; | |
1737 for (pt = &ts; *pt != t; pt = &(*pt)->next) | |
1738 ; | |
1739 *pt = ta; | |
1740 } | |
1741 t = ts; | |
1742 continue; | |
1743 #endif | |
1744 | |
1745 case TOKdelegate: | |
1746 case TOKfunction: | |
1747 { // Handle delegate declaration: | |
1748 // t delegate(parameter list) | |
1749 // t function(parameter list) | |
1750 Arguments *arguments; | |
1751 int varargs; | |
1752 enum TOK save = token.value; | |
1753 | |
1754 nextToken(); | |
1755 arguments = parseParameters(&varargs); | |
1756 t = new TypeFunction(arguments, t, varargs, linkage); | |
1757 if (save == TOKdelegate) | |
1758 t = new TypeDelegate(t); | |
1759 else | |
1760 t = new TypePointer(t); // pointer to function | |
1761 continue; | |
1762 } | |
1763 | |
1764 default: | |
1765 ts = t; | |
1766 break; | |
1767 } | |
1768 break; | |
1769 } | |
1770 return ts; | |
1771 } | |
1772 | |
1773 Type *Parser::parseDeclarator(Type *t, Identifier **pident, TemplateParameters **tpl) | |
1774 { Type *ts; | |
1775 Type *ta; | |
1776 | |
1777 //printf("parseDeclarator(tpl = %p)\n", tpl); | |
1778 t = parseBasicType2(t); | |
1779 | |
1780 switch (token.value) | |
1781 { | |
1782 | |
1783 case TOKidentifier: | |
1784 if (pident) | |
1785 *pident = token.ident; | |
1786 else | |
1787 error("unexpected identifer '%s' in declarator", token.ident->toChars()); | |
1788 ts = t; | |
1789 nextToken(); | |
1790 break; | |
1791 | |
1792 case TOKlparen: | |
1793 nextToken(); | |
1794 ts = parseDeclarator(t, pident); | |
1795 check(TOKrparen); | |
1796 break; | |
1797 | |
1798 default: | |
1799 ts = t; | |
1800 break; | |
1801 } | |
1802 | |
1803 while (1) | |
1804 { | |
1805 switch (token.value) | |
1806 { | |
1807 #if CARRAYDECL | |
1808 case TOKlbracket: | |
1809 { // This is the old C-style post [] syntax. | |
1810 nextToken(); | |
1811 if (token.value == TOKrbracket) | |
1812 { | |
1813 ta = new TypeDArray(t); // [] | |
1814 nextToken(); | |
1815 } | |
1816 else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
1817 { // It's an associative array declaration | |
1818 Type *index; | |
1819 | |
1820 //printf("it's an associative array\n"); | |
1821 index = parseBasicType(); | |
1822 index = parseDeclarator(index, NULL); // [ type ] | |
1823 check(TOKrbracket); | |
1824 ta = new TypeAArray(t, index); | |
1825 } | |
1826 else | |
1827 { | |
1828 //printf("it's [expression]\n"); | |
1829 Expression *e = parseExpression(); // [ expression ] | |
1830 ta = new TypeSArray(t, e); | |
1831 check(TOKrbracket); | |
1832 } | |
1833 Type **pt; | |
1834 for (pt = &ts; *pt != t; pt = &(*pt)->next) | |
1835 ; | |
1836 *pt = ta; | |
1837 continue; | |
1838 } | |
1839 #endif | |
1840 case TOKlparen: | |
1841 { Arguments *arguments; | |
1842 int varargs; | |
1843 | |
1844 if (tpl) | |
1845 { | |
1846 /* Look ahead to see if this is (...)(...), | |
1847 * i.e. a function template declaration | |
1848 */ | |
1849 if (peekPastParen(&token)->value == TOKlparen) | |
1850 { // It's a function template declaration | |
1851 //printf("function template declaration\n"); | |
1852 | |
1853 // Gather template parameter list | |
1854 *tpl = parseTemplateParameterList(); | |
1855 } | |
1856 } | |
1857 | |
1858 arguments = parseParameters(&varargs); | |
35
3cfcb944304e
[svn r39] * Updated to DMD 1.022 with the exception of:
lindquist
parents:
19
diff
changeset
|
1859 Type *ta = new TypeFunction(arguments, t, varargs, linkage); |
3cfcb944304e
[svn r39] * Updated to DMD 1.022 with the exception of:
lindquist
parents:
19
diff
changeset
|
1860 Type **pt; |
1 | 1861 for (pt = &ts; *pt != t; pt = &(*pt)->next) |
1862 ; | |
1863 *pt = ta; | |
1864 break; | |
1865 } | |
1866 } | |
1867 break; | |
1868 } | |
1869 | |
1870 return ts; | |
1871 } | |
1872 | |
1873 /********************************** | |
1874 * Return array of Declaration *'s. | |
1875 */ | |
1876 | |
1877 Array *Parser::parseDeclarations() | |
1878 { | |
1879 enum STC storage_class; | |
1880 enum STC stc; | |
1881 Type *ts; | |
1882 Type *t; | |
1883 Type *tfirst; | |
1884 Identifier *ident; | |
1885 Array *a; | |
1886 enum TOK tok; | |
1887 unsigned char *comment = token.blockComment; | |
1888 enum LINK link = linkage; | |
1889 | |
1890 //printf("parseDeclarations()\n"); | |
1891 switch (token.value) | |
1892 { | |
1893 case TOKtypedef: | |
1894 case TOKalias: | |
1895 tok = token.value; | |
1896 nextToken(); | |
1897 break; | |
1898 | |
1899 default: | |
1900 tok = TOKreserved; | |
1901 break; | |
1902 } | |
1903 | |
1904 storage_class = STCundefined; | |
1905 while (1) | |
1906 { | |
1907 switch (token.value) | |
1908 { | |
1909 case TOKconst: stc = STCconst; goto L1; | |
1910 case TOKstatic: stc = STCstatic; goto L1; | |
1911 case TOKfinal: stc = STCfinal; goto L1; | |
1912 case TOKauto: stc = STCauto; goto L1; | |
1913 case TOKscope: stc = STCscope; goto L1; | |
1914 case TOKoverride: stc = STCoverride; goto L1; | |
1915 case TOKabstract: stc = STCabstract; goto L1; | |
1916 case TOKsynchronized: stc = STCsynchronized; goto L1; | |
1917 case TOKdeprecated: stc = STCdeprecated; goto L1; | |
1918 L1: | |
1919 if (storage_class & stc) | |
1920 error("redundant storage class '%s'", token.toChars()); | |
1921 storage_class = (STC) (storage_class | stc); | |
1922 nextToken(); | |
1923 continue; | |
1924 | |
1925 case TOKextern: | |
1926 if (peek(&token)->value != TOKlparen) | |
1927 { stc = STCextern; | |
1928 goto L1; | |
1929 } | |
1930 | |
1931 link = parseLinkage(); | |
1932 continue; | |
1933 | |
1934 default: | |
1935 break; | |
1936 } | |
1937 break; | |
1938 } | |
1939 | |
1940 a = new Array(); | |
1941 | |
1942 /* Look for auto initializers: | |
1943 * storage_class identifier = initializer; | |
1944 */ | |
1945 while (storage_class && | |
1946 token.value == TOKidentifier && | |
1947 peek(&token)->value == TOKassign) | |
1948 { | |
1949 ident = token.ident; | |
1950 nextToken(); | |
1951 nextToken(); | |
1952 Initializer *init = parseInitializer(); | |
1953 VarDeclaration *v = new VarDeclaration(loc, NULL, ident, init); | |
1954 v->storage_class = storage_class; | |
1955 a->push(v); | |
1956 if (token.value == TOKsemicolon) | |
1957 { | |
1958 nextToken(); | |
1959 addComment(v, comment); | |
1960 } | |
1961 else if (token.value == TOKcomma) | |
1962 { | |
1963 nextToken(); | |
1964 if (!(token.value == TOKidentifier && peek(&token)->value == TOKassign)) | |
1965 { | |
1966 error("Identifier expected following comma"); | |
1967 } | |
1968 else | |
1969 continue; | |
1970 } | |
1971 else | |
1972 error("semicolon expected following auto declaration, not '%s'", token.toChars()); | |
1973 return a; | |
1974 } | |
1975 | |
1976 if (token.value == TOKclass) | |
1977 { AggregateDeclaration *s; | |
1978 | |
1979 s = (AggregateDeclaration *)parseAggregate(); | |
1980 s->storage_class |= storage_class; | |
1981 a->push(s); | |
1982 addComment(s, comment); | |
1983 return a; | |
1984 } | |
1985 | |
1986 ts = parseBasicType(); | |
1987 ts = parseBasicType2(ts); | |
1988 tfirst = NULL; | |
1989 | |
1990 while (1) | |
1991 { | |
1992 Loc loc = this->loc; | |
1993 TemplateParameters *tpl = NULL; | |
1994 | |
1995 ident = NULL; | |
1996 t = parseDeclarator(ts, &ident, &tpl); | |
1997 assert(t); | |
1998 if (!tfirst) | |
1999 tfirst = t; | |
2000 else if (t != tfirst) | |
2001 error("multiple declarations must have the same type, not %s and %s", | |
2002 tfirst->toChars(), t->toChars()); | |
2003 if (!ident) | |
2004 error("no identifier for declarator %s", t->toChars()); | |
2005 | |
2006 if (tok == TOKtypedef || tok == TOKalias) | |
2007 { Declaration *v; | |
2008 Initializer *init; | |
2009 | |
2010 init = NULL; | |
2011 if (token.value == TOKassign) | |
2012 { | |
2013 nextToken(); | |
2014 init = parseInitializer(); | |
2015 } | |
2016 if (tok == TOKtypedef) | |
2017 v = new TypedefDeclaration(loc, ident, t, init); | |
2018 else | |
2019 { if (init) | |
2020 error("alias cannot have initializer"); | |
2021 v = new AliasDeclaration(loc, ident, t); | |
2022 } | |
2023 v->storage_class = storage_class; | |
2024 if (link == linkage) | |
2025 a->push(v); | |
2026 else | |
2027 { | |
2028 Array *ax = new Array(); | |
2029 ax->push(v); | |
2030 Dsymbol *s = new LinkDeclaration(link, ax); | |
2031 a->push(s); | |
2032 } | |
2033 switch (token.value) | |
2034 { case TOKsemicolon: | |
2035 nextToken(); | |
2036 addComment(v, comment); | |
2037 break; | |
2038 | |
2039 case TOKcomma: | |
2040 nextToken(); | |
2041 addComment(v, comment); | |
2042 continue; | |
2043 | |
2044 default: | |
2045 error("semicolon expected to close %s declaration", Token::toChars(tok)); | |
2046 break; | |
2047 } | |
2048 } | |
2049 else if (t->ty == Tfunction) | |
2050 { FuncDeclaration *f; | |
2051 Dsymbol *s; | |
2052 | |
2053 f = new FuncDeclaration(loc, 0, ident, storage_class, t); | |
2054 addComment(f, comment); | |
2055 parseContracts(f); | |
2056 addComment(f, NULL); | |
2057 if (link == linkage) | |
2058 { | |
2059 s = f; | |
2060 } | |
2061 else | |
2062 { | |
2063 Array *ax = new Array(); | |
2064 ax->push(f); | |
2065 s = new LinkDeclaration(link, ax); | |
2066 } | |
2067 if (tpl) // it's a function template | |
2068 { Array *decldefs; | |
2069 TemplateDeclaration *tempdecl; | |
2070 | |
2071 // Wrap a template around the aggregate declaration | |
2072 decldefs = new Array(); | |
2073 decldefs->push(s); | |
2074 tempdecl = new TemplateDeclaration(loc, s->ident, tpl, decldefs); | |
2075 s = tempdecl; | |
2076 } | |
2077 addComment(s, comment); | |
2078 a->push(s); | |
2079 } | |
2080 else | |
2081 { VarDeclaration *v; | |
2082 Initializer *init; | |
2083 | |
2084 init = NULL; | |
2085 if (token.value == TOKassign) | |
2086 { | |
2087 nextToken(); | |
2088 init = parseInitializer(); | |
2089 } | |
2090 v = new VarDeclaration(loc, t, ident, init); | |
2091 v->storage_class = storage_class; | |
2092 if (link == linkage) | |
2093 a->push(v); | |
2094 else | |
2095 { | |
2096 Array *ax = new Array(); | |
2097 ax->push(v); | |
2098 Dsymbol *s = new LinkDeclaration(link, ax); | |
2099 a->push(s); | |
2100 } | |
2101 switch (token.value) | |
2102 { case TOKsemicolon: | |
2103 nextToken(); | |
2104 addComment(v, comment); | |
2105 break; | |
2106 | |
2107 case TOKcomma: | |
2108 nextToken(); | |
2109 addComment(v, comment); | |
2110 continue; | |
2111 | |
2112 default: | |
2113 error("semicolon expected, not '%s'", token.toChars()); | |
2114 break; | |
2115 } | |
2116 } | |
2117 break; | |
2118 } | |
2119 return a; | |
2120 } | |
2121 | |
2122 /***************************************** | |
2123 * Parse contracts following function declaration. | |
2124 */ | |
2125 | |
2126 void Parser::parseContracts(FuncDeclaration *f) | |
2127 { | |
2128 Type *tb; | |
2129 enum LINK linksave = linkage; | |
2130 | |
2131 // The following is irrelevant, as it is overridden by sc->linkage in | |
2132 // TypeFunction::semantic | |
2133 linkage = LINKd; // nested functions have D linkage | |
2134 L1: | |
2135 switch (token.value) | |
2136 { | |
2137 case TOKlcurly: | |
2138 if (f->frequire || f->fensure) | |
2139 error("missing body { ... } after in or out"); | |
2140 f->fbody = parseStatement(PSsemi); | |
2141 f->endloc = endloc; | |
2142 break; | |
2143 | |
2144 case TOKbody: | |
2145 nextToken(); | |
2146 f->fbody = parseStatement(PScurly); | |
2147 f->endloc = endloc; | |
2148 break; | |
2149 | |
2150 case TOKsemicolon: | |
2151 if (f->frequire || f->fensure) | |
2152 error("missing body { ... } after in or out"); | |
2153 nextToken(); | |
2154 break; | |
2155 | |
2156 #if 0 // Do we want this for function declarations, so we can do: | |
2157 // int x, y, foo(), z; | |
2158 case TOKcomma: | |
2159 nextToken(); | |
2160 continue; | |
2161 #endif | |
2162 | |
2163 #if 0 // Dumped feature | |
2164 case TOKthrow: | |
2165 if (!f->fthrows) | |
2166 f->fthrows = new Array(); | |
2167 nextToken(); | |
2168 check(TOKlparen); | |
2169 while (1) | |
2170 { | |
2171 tb = parseBasicType(); | |
2172 f->fthrows->push(tb); | |
2173 if (token.value == TOKcomma) | |
2174 { nextToken(); | |
2175 continue; | |
2176 } | |
2177 break; | |
2178 } | |
2179 check(TOKrparen); | |
2180 goto L1; | |
2181 #endif | |
2182 | |
2183 case TOKin: | |
2184 nextToken(); | |
2185 if (f->frequire) | |
2186 error("redundant 'in' statement"); | |
2187 f->frequire = parseStatement(PScurly | PSscope); | |
2188 goto L1; | |
2189 | |
2190 case TOKout: | |
2191 // parse: out (identifier) { statement } | |
2192 nextToken(); | |
2193 if (token.value != TOKlcurly) | |
2194 { | |
2195 check(TOKlparen); | |
2196 if (token.value != TOKidentifier) | |
2197 error("(identifier) following 'out' expected, not %s", token.toChars()); | |
2198 f->outId = token.ident; | |
2199 nextToken(); | |
2200 check(TOKrparen); | |
2201 } | |
2202 if (f->fensure) | |
2203 error("redundant 'out' statement"); | |
2204 f->fensure = parseStatement(PScurly | PSscope); | |
2205 goto L1; | |
2206 | |
2207 default: | |
2208 error("semicolon expected following function declaration"); | |
2209 break; | |
2210 } | |
2211 linkage = linksave; | |
2212 } | |
2213 | |
2214 /***************************************** | |
2215 */ | |
2216 | |
2217 Initializer *Parser::parseInitializer() | |
2218 { | |
2219 StructInitializer *is; | |
2220 ArrayInitializer *ia; | |
2221 ExpInitializer *ie; | |
2222 Expression *e; | |
2223 Identifier *id; | |
2224 Initializer *value; | |
2225 int comma; | |
2226 Loc loc = this->loc; | |
2227 Token *t; | |
2228 int braces; | |
2229 | |
2230 switch (token.value) | |
2231 { | |
2232 case TOKlcurly: | |
2233 /* Scan ahead to see if it is a struct initializer or | |
2234 * a function literal. | |
2235 * If it contains a ';', it is a function literal. | |
2236 * Treat { } as a struct initializer. | |
2237 */ | |
2238 braces = 1; | |
2239 for (t = peek(&token); 1; t = peek(t)) | |
2240 { | |
2241 switch (t->value) | |
2242 { | |
2243 case TOKsemicolon: | |
2244 case TOKreturn: | |
2245 goto Lexpression; | |
2246 | |
2247 case TOKlcurly: | |
2248 braces++; | |
2249 continue; | |
2250 | |
2251 case TOKrcurly: | |
2252 if (--braces == 0) | |
2253 break; | |
2254 continue; | |
2255 | |
92 | 2256 case TOKeof: |
2257 break; | |
2258 | |
1 | 2259 default: |
2260 continue; | |
2261 } | |
2262 break; | |
2263 } | |
2264 | |
2265 is = new StructInitializer(loc); | |
2266 nextToken(); | |
2267 comma = 0; | |
2268 while (1) | |
2269 { | |
2270 switch (token.value) | |
2271 { | |
2272 case TOKidentifier: | |
2273 if (comma == 1) | |
2274 error("comma expected separating field initializers"); | |
2275 t = peek(&token); | |
2276 if (t->value == TOKcolon) | |
2277 { | |
2278 id = token.ident; | |
2279 nextToken(); | |
2280 nextToken(); // skip over ':' | |
2281 } | |
2282 else | |
2283 { id = NULL; | |
2284 } | |
2285 value = parseInitializer(); | |
2286 is->addInit(id, value); | |
2287 comma = 1; | |
2288 continue; | |
2289 | |
2290 case TOKcomma: | |
2291 nextToken(); | |
2292 comma = 2; | |
2293 continue; | |
2294 | |
2295 case TOKrcurly: // allow trailing comma's | |
2296 nextToken(); | |
2297 break; | |
2298 | |
92 | 2299 case TOKeof: |
2300 error("found EOF instead of initializer"); | |
2301 break; | |
2302 | |
1 | 2303 default: |
2304 value = parseInitializer(); | |
2305 is->addInit(NULL, value); | |
2306 comma = 1; | |
2307 continue; | |
2308 //error("found '%s' instead of field initializer", token.toChars()); | |
2309 //break; | |
2310 } | |
2311 break; | |
2312 } | |
2313 return is; | |
2314 | |
2315 case TOKlbracket: | |
2316 ia = new ArrayInitializer(loc); | |
2317 nextToken(); | |
2318 comma = 0; | |
2319 while (1) | |
2320 { | |
2321 switch (token.value) | |
2322 { | |
2323 default: | |
2324 if (comma == 1) | |
2325 { error("comma expected separating array initializers, not %s", token.toChars()); | |
2326 nextToken(); | |
2327 break; | |
2328 } | |
2329 e = parseAssignExp(); | |
2330 if (!e) | |
2331 break; | |
2332 if (token.value == TOKcolon) | |
2333 { | |
2334 nextToken(); | |
2335 value = parseInitializer(); | |
2336 } | |
2337 else | |
2338 { value = new ExpInitializer(e->loc, e); | |
2339 e = NULL; | |
2340 } | |
2341 ia->addInit(e, value); | |
2342 comma = 1; | |
2343 continue; | |
2344 | |
2345 case TOKlcurly: | |
2346 case TOKlbracket: | |
2347 if (comma == 1) | |
2348 error("comma expected separating array initializers, not %s", token.toChars()); | |
2349 value = parseInitializer(); | |
2350 ia->addInit(NULL, value); | |
2351 comma = 1; | |
2352 continue; | |
2353 | |
2354 case TOKcomma: | |
2355 nextToken(); | |
2356 comma = 2; | |
2357 continue; | |
2358 | |
2359 case TOKrbracket: // allow trailing comma's | |
2360 nextToken(); | |
2361 break; | |
2362 | |
2363 case TOKeof: | |
2364 error("found '%s' instead of array initializer", token.toChars()); | |
2365 break; | |
2366 } | |
2367 break; | |
2368 } | |
2369 return ia; | |
2370 | |
2371 case TOKvoid: | |
2372 t = peek(&token); | |
2373 if (t->value == TOKsemicolon || t->value == TOKcomma) | |
2374 { | |
2375 nextToken(); | |
2376 return new VoidInitializer(loc); | |
2377 } | |
2378 goto Lexpression; | |
2379 | |
2380 default: | |
2381 Lexpression: | |
2382 e = parseAssignExp(); | |
2383 ie = new ExpInitializer(loc, e); | |
2384 return ie; | |
2385 } | |
2386 } | |
2387 | |
2388 | |
2389 /***************************************** | |
2390 * Input: | |
2391 * flags PSxxxx | |
2392 */ | |
2393 | |
2394 Statement *Parser::parseStatement(int flags) | |
2395 { Statement *s; | |
2396 Token *t; | |
2397 Condition *condition; | |
2398 Statement *ifbody; | |
2399 Statement *elsebody; | |
2400 Loc loc = this->loc; | |
2401 | |
2402 //printf("parseStatement()\n"); | |
2403 | |
2404 if (flags & PScurly && token.value != TOKlcurly) | |
2405 error("statement expected to be { }, not %s", token.toChars()); | |
2406 | |
2407 switch (token.value) | |
2408 { | |
2409 case TOKidentifier: | |
2410 // Need to look ahead to see if it is a declaration, label, or expression | |
2411 t = peek(&token); | |
2412 if (t->value == TOKcolon) | |
2413 { // It's a label | |
2414 Identifier *ident; | |
2415 | |
2416 ident = token.ident; | |
2417 nextToken(); | |
2418 nextToken(); | |
2419 s = parseStatement(PSsemi); | |
2420 s = new LabelStatement(loc, ident, s); | |
2421 break; | |
2422 } | |
2423 // fallthrough to TOKdot | |
2424 case TOKdot: | |
2425 case TOKtypeof: | |
2426 if (isDeclaration(&token, 2, TOKreserved, NULL)) | |
2427 goto Ldeclaration; | |
2428 else | |
2429 goto Lexp; | |
2430 break; | |
2431 | |
2432 case TOKassert: | |
2433 case TOKthis: | |
2434 case TOKsuper: | |
2435 case TOKint32v: | |
2436 case TOKuns32v: | |
2437 case TOKint64v: | |
2438 case TOKuns64v: | |
2439 case TOKfloat32v: | |
2440 case TOKfloat64v: | |
2441 case TOKfloat80v: | |
2442 case TOKimaginary32v: | |
2443 case TOKimaginary64v: | |
2444 case TOKimaginary80v: | |
2445 case TOKcharv: | |
2446 case TOKwcharv: | |
2447 case TOKdcharv: | |
2448 case TOKnull: | |
2449 case TOKtrue: | |
2450 case TOKfalse: | |
2451 case TOKstring: | |
2452 case TOKlparen: | |
2453 case TOKcast: | |
2454 case TOKmul: | |
2455 case TOKmin: | |
2456 case TOKadd: | |
2457 case TOKplusplus: | |
2458 case TOKminusminus: | |
2459 case TOKnew: | |
2460 case TOKdelete: | |
2461 case TOKdelegate: | |
2462 case TOKfunction: | |
2463 case TOKtypeid: | |
2464 case TOKis: | |
2465 case TOKlbracket: | |
2466 Lexp: | |
2467 { Expression *exp; | |
2468 | |
2469 exp = parseExpression(); | |
2470 check(TOKsemicolon, "statement"); | |
2471 s = new ExpStatement(loc, exp); | |
2472 break; | |
2473 } | |
2474 | |
2475 case TOKstatic: | |
2476 { // Look ahead to see if it's static assert() or static if() | |
2477 Token *t; | |
2478 | |
2479 t = peek(&token); | |
2480 if (t->value == TOKassert) | |
2481 { | |
2482 nextToken(); | |
2483 s = new StaticAssertStatement(parseStaticAssert()); | |
2484 break; | |
2485 } | |
2486 if (t->value == TOKif) | |
2487 { | |
2488 nextToken(); | |
2489 condition = parseStaticIfCondition(); | |
2490 goto Lcondition; | |
2491 } | |
2492 goto Ldeclaration; | |
2493 } | |
2494 | |
2495 CASE_BASIC_TYPES: | |
2496 case TOKtypedef: | |
2497 case TOKalias: | |
2498 case TOKconst: | |
2499 case TOKauto: | |
2500 case TOKextern: | |
2501 case TOKfinal: | |
2502 case TOKinvariant: | |
2503 // case TOKtypeof: | |
2504 Ldeclaration: | |
2505 { Array *a; | |
2506 | |
2507 a = parseDeclarations(); | |
2508 if (a->dim > 1) | |
2509 { | |
2510 Statements *as = new Statements(); | |
2511 as->reserve(a->dim); | |
2512 for (int i = 0; i < a->dim; i++) | |
2513 { | |
2514 Dsymbol *d = (Dsymbol *)a->data[i]; | |
2515 s = new DeclarationStatement(loc, d); | |
2516 as->push(s); | |
2517 } | |
2518 s = new CompoundStatement(loc, as); | |
2519 } | |
2520 else if (a->dim == 1) | |
2521 { | |
2522 Dsymbol *d = (Dsymbol *)a->data[0]; | |
2523 s = new DeclarationStatement(loc, d); | |
2524 } | |
2525 else | |
2526 assert(0); | |
2527 if (flags & PSscope) | |
2528 s = new ScopeStatement(loc, s); | |
2529 break; | |
2530 } | |
2531 | |
2532 case TOKstruct: | |
2533 case TOKunion: | |
2534 case TOKclass: | |
2535 case TOKinterface: | |
2536 { Dsymbol *d; | |
2537 | |
2538 d = parseAggregate(); | |
2539 s = new DeclarationStatement(loc, d); | |
2540 break; | |
2541 } | |
2542 | |
2543 case TOKenum: | |
2544 { Dsymbol *d; | |
2545 | |
2546 d = parseEnum(); | |
2547 s = new DeclarationStatement(loc, d); | |
2548 break; | |
2549 } | |
2550 | |
2551 case TOKmixin: | |
2552 { t = peek(&token); | |
2553 if (t->value == TOKlparen) | |
2554 { // mixin(string) | |
2555 nextToken(); | |
2556 check(TOKlparen, "mixin"); | |
2557 Expression *e = parseAssignExp(); | |
2558 check(TOKrparen); | |
2559 check(TOKsemicolon); | |
2560 s = new CompileStatement(loc, e); | |
2561 break; | |
2562 } | |
2563 Dsymbol *d = parseMixin(); | |
2564 s = new DeclarationStatement(loc, d); | |
2565 break; | |
2566 } | |
2567 | |
2568 case TOKlcurly: | |
2569 { Statements *statements; | |
2570 | |
2571 nextToken(); | |
2572 statements = new Statements(); | |
2573 while (token.value != TOKrcurly) | |
2574 { | |
2575 statements->push(parseStatement(PSsemi | PScurlyscope)); | |
2576 } | |
2577 endloc = this->loc; | |
2578 s = new CompoundStatement(loc, statements); | |
2579 if (flags & (PSscope | PScurlyscope)) | |
2580 s = new ScopeStatement(loc, s); | |
2581 nextToken(); | |
2582 break; | |
2583 } | |
2584 | |
2585 case TOKwhile: | |
2586 { Expression *condition; | |
2587 Statement *body; | |
2588 | |
2589 nextToken(); | |
2590 check(TOKlparen); | |
2591 condition = parseExpression(); | |
2592 check(TOKrparen); | |
2593 body = parseStatement(PSscope); | |
2594 s = new WhileStatement(loc, condition, body); | |
2595 break; | |
2596 } | |
2597 | |
2598 case TOKsemicolon: | |
2599 if (!(flags & PSsemi)) | |
2600 error("use '{ }' for an empty statement, not a ';'"); | |
2601 nextToken(); | |
2602 s = new ExpStatement(loc, NULL); | |
2603 break; | |
2604 | |
2605 case TOKdo: | |
2606 { Statement *body; | |
2607 Expression *condition; | |
2608 | |
2609 nextToken(); | |
2610 body = parseStatement(PSscope); | |
2611 check(TOKwhile); | |
2612 check(TOKlparen); | |
2613 condition = parseExpression(); | |
2614 check(TOKrparen); | |
2615 s = new DoStatement(loc, body, condition); | |
2616 break; | |
2617 } | |
2618 | |
2619 case TOKfor: | |
2620 { | |
2621 Statement *init; | |
2622 Expression *condition; | |
2623 Expression *increment; | |
2624 Statement *body; | |
2625 | |
2626 nextToken(); | |
2627 check(TOKlparen); | |
2628 if (token.value == TOKsemicolon) | |
2629 { init = NULL; | |
2630 nextToken(); | |
2631 } | |
2632 else | |
2633 { init = parseStatement(0); | |
2634 } | |
2635 if (token.value == TOKsemicolon) | |
2636 { | |
2637 condition = NULL; | |
2638 nextToken(); | |
2639 } | |
2640 else | |
2641 { | |
2642 condition = parseExpression(); | |
2643 check(TOKsemicolon, "for condition"); | |
2644 } | |
2645 if (token.value == TOKrparen) | |
2646 { increment = NULL; | |
2647 nextToken(); | |
2648 } | |
2649 else | |
2650 { increment = parseExpression(); | |
2651 check(TOKrparen); | |
2652 } | |
2653 body = parseStatement(PSscope); | |
2654 s = new ForStatement(loc, init, condition, increment, body); | |
2655 if (init) | |
2656 s = new ScopeStatement(loc, s); | |
2657 break; | |
2658 } | |
2659 | |
2660 case TOKforeach: | |
2661 case TOKforeach_reverse: | |
2662 { | |
2663 enum TOK op = token.value; | |
2664 Arguments *arguments; | |
2665 | |
2666 Statement *d; | |
2667 Statement *body; | |
2668 Expression *aggr; | |
2669 | |
2670 nextToken(); | |
2671 check(TOKlparen); | |
2672 | |
2673 arguments = new Arguments(); | |
2674 | |
2675 while (1) | |
2676 { | |
2677 Type *tb; | |
2678 Identifier *ai = NULL; | |
2679 Type *at; | |
2680 unsigned storageClass; | |
2681 Argument *a; | |
2682 | |
2683 storageClass = STCin; | |
2684 if (token.value == TOKinout || token.value == TOKref) | |
2685 { storageClass = STCref; | |
2686 nextToken(); | |
2687 } | |
2688 if (token.value == TOKidentifier) | |
2689 { | |
2690 Token *t = peek(&token); | |
2691 if (t->value == TOKcomma || t->value == TOKsemicolon) | |
2692 { ai = token.ident; | |
2693 at = NULL; // infer argument type | |
2694 nextToken(); | |
2695 goto Larg; | |
2696 } | |
2697 } | |
2698 tb = parseBasicType(); | |
2699 at = parseDeclarator(tb, &ai); | |
2700 if (!ai) | |
2701 error("no identifier for declarator %s", at->toChars()); | |
2702 Larg: | |
2703 a = new Argument(storageClass, at, ai, NULL); | |
2704 arguments->push(a); | |
2705 if (token.value == TOKcomma) | |
2706 { nextToken(); | |
2707 continue; | |
2708 } | |
2709 break; | |
2710 } | |
2711 check(TOKsemicolon); | |
2712 | |
2713 aggr = parseExpression(); | |
2714 check(TOKrparen); | |
2715 body = parseStatement(0); | |
2716 s = new ForeachStatement(loc, op, arguments, aggr, body); | |
2717 break; | |
2718 } | |
2719 | |
2720 case TOKif: | |
2721 { Argument *arg = NULL; | |
2722 Expression *condition; | |
2723 Statement *ifbody; | |
2724 Statement *elsebody; | |
2725 | |
2726 nextToken(); | |
2727 check(TOKlparen); | |
2728 | |
2729 if (token.value == TOKauto) | |
2730 { | |
2731 nextToken(); | |
2732 if (token.value == TOKidentifier) | |
2733 { | |
2734 Token *t = peek(&token); | |
2735 if (t->value == TOKassign) | |
2736 { | |
2737 arg = new Argument(STCin, NULL, token.ident, NULL); | |
2738 nextToken(); | |
2739 nextToken(); | |
2740 } | |
2741 else | |
2742 { error("= expected following auto identifier"); | |
2743 goto Lerror; | |
2744 } | |
2745 } | |
2746 else | |
2747 { error("identifier expected following auto"); | |
2748 goto Lerror; | |
2749 } | |
2750 } | |
2751 else if (isDeclaration(&token, 2, TOKassign, NULL)) | |
2752 { | |
2753 Type *tb; | |
2754 Type *at; | |
2755 Identifier *ai; | |
2756 | |
2757 tb = parseBasicType(); | |
2758 at = parseDeclarator(tb, &ai); | |
2759 check(TOKassign); | |
2760 arg = new Argument(STCin, at, ai, NULL); | |
2761 } | |
2762 | |
2763 // Check for " ident;" | |
2764 else if (token.value == TOKidentifier) | |
2765 { | |
2766 Token *t = peek(&token); | |
2767 if (t->value == TOKcomma || t->value == TOKsemicolon) | |
2768 { | |
2769 arg = new Argument(STCin, NULL, token.ident, NULL); | |
2770 nextToken(); | |
2771 nextToken(); | |
2772 if (1 || !global.params.useDeprecated) | |
2773 error("if (v; e) is deprecated, use if (auto v = e)"); | |
2774 } | |
2775 } | |
2776 | |
2777 condition = parseExpression(); | |
2778 check(TOKrparen); | |
2779 ifbody = parseStatement(PSscope); | |
2780 if (token.value == TOKelse) | |
2781 { | |
2782 nextToken(); | |
2783 elsebody = parseStatement(PSscope); | |
2784 } | |
2785 else | |
2786 elsebody = NULL; | |
2787 s = new IfStatement(loc, arg, condition, ifbody, elsebody); | |
2788 break; | |
2789 } | |
2790 | |
2791 case TOKscope: | |
2792 if (peek(&token)->value != TOKlparen) | |
2793 goto Ldeclaration; // scope used as storage class | |
2794 nextToken(); | |
2795 check(TOKlparen); | |
2796 if (token.value != TOKidentifier) | |
2797 { error("scope identifier expected"); | |
2798 goto Lerror; | |
2799 } | |
2800 else | |
2801 { TOK t = TOKon_scope_exit; | |
2802 Identifier *id = token.ident; | |
2803 | |
2804 if (id == Id::exit) | |
2805 t = TOKon_scope_exit; | |
2806 else if (id == Id::failure) | |
2807 t = TOKon_scope_failure; | |
2808 else if (id == Id::success) | |
2809 t = TOKon_scope_success; | |
2810 else | |
2811 error("valid scope identifiers are exit, failure, or success, not %s", id->toChars()); | |
2812 nextToken(); | |
2813 check(TOKrparen); | |
2814 Statement *st = parseStatement(PScurlyscope); | |
2815 s = new OnScopeStatement(loc, t, st); | |
2816 break; | |
2817 } | |
2818 | |
2819 case TOKdebug: | |
2820 nextToken(); | |
2821 condition = parseDebugCondition(); | |
2822 goto Lcondition; | |
2823 | |
2824 case TOKversion: | |
2825 nextToken(); | |
2826 condition = parseVersionCondition(); | |
2827 goto Lcondition; | |
2828 | |
2829 Lcondition: | |
2830 ifbody = parseStatement(0 /*PSsemi*/); | |
2831 elsebody = NULL; | |
2832 if (token.value == TOKelse) | |
2833 { | |
2834 nextToken(); | |
2835 elsebody = parseStatement(0 /*PSsemi*/); | |
2836 } | |
2837 s = new ConditionalStatement(loc, condition, ifbody, elsebody); | |
2838 break; | |
2839 | |
2840 case TOKpragma: | |
2841 { Identifier *ident; | |
2842 Expressions *args = NULL; | |
2843 Statement *body; | |
2844 | |
2845 nextToken(); | |
2846 check(TOKlparen); | |
2847 if (token.value != TOKidentifier) | |
2848 { error("pragma(identifier expected"); | |
2849 goto Lerror; | |
2850 } | |
2851 ident = token.ident; | |
2852 nextToken(); | |
2853 if (token.value == TOKcomma) | |
2854 args = parseArguments(); // pragma(identifier, args...); | |
2855 else | |
2856 check(TOKrparen); // pragma(identifier); | |
2857 if (token.value == TOKsemicolon) | |
2858 { nextToken(); | |
2859 body = NULL; | |
2860 } | |
2861 else | |
2862 body = parseStatement(PSsemi); | |
2863 s = new PragmaStatement(loc, ident, args, body); | |
2864 break; | |
2865 } | |
2866 | |
2867 case TOKswitch: | |
2868 { Expression *condition; | |
2869 Statement *body; | |
2870 | |
2871 nextToken(); | |
2872 check(TOKlparen); | |
2873 condition = parseExpression(); | |
2874 check(TOKrparen); | |
2875 body = parseStatement(PSscope); | |
2876 s = new SwitchStatement(loc, condition, body); | |
2877 break; | |
2878 } | |
2879 | |
2880 case TOKcase: | |
2881 { Expression *exp; | |
2882 Statements *statements; | |
2883 Array cases; // array of Expression's | |
2884 | |
2885 while (1) | |
2886 { | |
2887 nextToken(); | |
2888 exp = parseAssignExp(); | |
2889 cases.push(exp); | |
2890 if (token.value != TOKcomma) | |
2891 break; | |
2892 } | |
2893 check(TOKcolon); | |
2894 | |
2895 statements = new Statements(); | |
2896 while (token.value != TOKcase && | |
2897 token.value != TOKdefault && | |
2898 token.value != TOKrcurly) | |
2899 { | |
2900 statements->push(parseStatement(PSsemi | PScurlyscope)); | |
2901 } | |
2902 s = new CompoundStatement(loc, statements); | |
2903 s = new ScopeStatement(loc, s); | |
2904 | |
2905 // Keep cases in order by building the case statements backwards | |
2906 for (int i = cases.dim; i; i--) | |
2907 { | |
2908 exp = (Expression *)cases.data[i - 1]; | |
2909 s = new CaseStatement(loc, exp, s); | |
2910 } | |
2911 break; | |
2912 } | |
2913 | |
2914 case TOKdefault: | |
2915 { | |
2916 Statements *statements; | |
2917 | |
2918 nextToken(); | |
2919 check(TOKcolon); | |
2920 | |
2921 statements = new Statements(); | |
2922 while (token.value != TOKcase && | |
2923 token.value != TOKdefault && | |
2924 token.value != TOKrcurly) | |
2925 { | |
2926 statements->push(parseStatement(PSsemi | PScurlyscope)); | |
2927 } | |
2928 s = new CompoundStatement(loc, statements); | |
2929 s = new ScopeStatement(loc, s); | |
2930 s = new DefaultStatement(loc, s); | |
2931 break; | |
2932 } | |
2933 | |
2934 case TOKreturn: | |
2935 { Expression *exp; | |
2936 | |
2937 nextToken(); | |
2938 if (token.value == TOKsemicolon) | |
2939 exp = NULL; | |
2940 else | |
2941 exp = parseExpression(); | |
2942 check(TOKsemicolon, "return statement"); | |
2943 s = new ReturnStatement(loc, exp); | |
2944 break; | |
2945 } | |
2946 | |
2947 case TOKbreak: | |
2948 { Identifier *ident; | |
2949 | |
2950 nextToken(); | |
2951 if (token.value == TOKidentifier) | |
2952 { ident = token.ident; | |
2953 nextToken(); | |
2954 } | |
2955 else | |
2956 ident = NULL; | |
2957 check(TOKsemicolon, "break statement"); | |
2958 s = new BreakStatement(loc, ident); | |
2959 break; | |
2960 } | |
2961 | |
2962 case TOKcontinue: | |
2963 { Identifier *ident; | |
2964 | |
2965 nextToken(); | |
2966 if (token.value == TOKidentifier) | |
2967 { ident = token.ident; | |
2968 nextToken(); | |
2969 } | |
2970 else | |
2971 ident = NULL; | |
2972 check(TOKsemicolon, "continue statement"); | |
2973 s = new ContinueStatement(loc, ident); | |
2974 break; | |
2975 } | |
2976 | |
2977 case TOKgoto: | |
2978 { Identifier *ident; | |
2979 | |
2980 nextToken(); | |
2981 if (token.value == TOKdefault) | |
2982 { | |
2983 nextToken(); | |
2984 s = new GotoDefaultStatement(loc); | |
2985 } | |
2986 else if (token.value == TOKcase) | |
2987 { | |
2988 Expression *exp = NULL; | |
2989 | |
2990 nextToken(); | |
2991 if (token.value != TOKsemicolon) | |
2992 exp = parseExpression(); | |
2993 s = new GotoCaseStatement(loc, exp); | |
2994 } | |
2995 else | |
2996 { | |
2997 if (token.value != TOKidentifier) | |
2998 { error("Identifier expected following goto"); | |
2999 ident = NULL; | |
3000 } | |
3001 else | |
3002 { ident = token.ident; | |
3003 nextToken(); | |
3004 } | |
3005 s = new GotoStatement(loc, ident); | |
3006 } | |
3007 check(TOKsemicolon, "goto statement"); | |
3008 break; | |
3009 } | |
3010 | |
3011 case TOKsynchronized: | |
3012 { Expression *exp; | |
3013 Statement *body; | |
3014 | |
3015 nextToken(); | |
3016 if (token.value == TOKlparen) | |
3017 { | |
3018 nextToken(); | |
3019 exp = parseExpression(); | |
3020 check(TOKrparen); | |
3021 } | |
3022 else | |
3023 exp = NULL; | |
3024 body = parseStatement(PSscope); | |
3025 s = new SynchronizedStatement(loc, exp, body); | |
3026 break; | |
3027 } | |
3028 | |
3029 case TOKwith: | |
3030 { Expression *exp; | |
3031 Statement *body; | |
3032 | |
3033 nextToken(); | |
3034 check(TOKlparen); | |
3035 exp = parseExpression(); | |
3036 check(TOKrparen); | |
3037 body = parseStatement(PSscope); | |
3038 s = new WithStatement(loc, exp, body); | |
3039 break; | |
3040 } | |
3041 | |
3042 case TOKtry: | |
3043 { Statement *body; | |
3044 Array *catches = NULL; | |
3045 Statement *finalbody = NULL; | |
3046 | |
3047 nextToken(); | |
3048 body = parseStatement(PSscope); | |
3049 while (token.value == TOKcatch) | |
3050 { | |
3051 Statement *handler; | |
3052 Catch *c; | |
3053 Type *t; | |
3054 Identifier *id; | |
3055 Loc loc = this->loc; | |
3056 | |
3057 nextToken(); | |
3058 if (token.value == TOKlcurly) | |
3059 { | |
3060 t = NULL; | |
3061 id = NULL; | |
3062 } | |
3063 else | |
3064 { | |
3065 check(TOKlparen); | |
3066 t = parseBasicType(); | |
3067 id = NULL; | |
3068 t = parseDeclarator(t, &id); | |
3069 check(TOKrparen); | |
3070 } | |
3071 handler = parseStatement(0); | |
3072 c = new Catch(loc, t, id, handler); | |
3073 if (!catches) | |
3074 catches = new Array(); | |
3075 catches->push(c); | |
3076 } | |
3077 | |
3078 if (token.value == TOKfinally) | |
3079 { nextToken(); | |
3080 finalbody = parseStatement(0); | |
3081 } | |
3082 | |
3083 s = body; | |
3084 if (!catches && !finalbody) | |
3085 error("catch or finally expected following try"); | |
3086 else | |
3087 { if (catches) | |
3088 s = new TryCatchStatement(loc, body, catches); | |
3089 if (finalbody) | |
3090 s = new TryFinallyStatement(loc, s, finalbody); | |
3091 } | |
3092 break; | |
3093 } | |
3094 | |
3095 case TOKthrow: | |
3096 { Expression *exp; | |
3097 | |
3098 nextToken(); | |
3099 exp = parseExpression(); | |
3100 check(TOKsemicolon, "throw statement"); | |
3101 s = new ThrowStatement(loc, exp); | |
3102 break; | |
3103 } | |
3104 | |
3105 case TOKvolatile: | |
3106 nextToken(); | |
3107 s = parseStatement(PSsemi | PScurlyscope); | |
3108 s = new VolatileStatement(loc, s); | |
3109 break; | |
3110 | |
3111 case TOKasm: | |
3112 { Statements *statements; | |
3113 Identifier *label; | |
3114 Loc labelloc; | |
3115 Token *toklist; | |
3116 Token **ptoklist; | |
3117 | |
3118 // Parse the asm block into a sequence of AsmStatements, | |
3119 // each AsmStatement is one instruction. | |
3120 // Separate out labels. | |
3121 // Defer parsing of AsmStatements until semantic processing. | |
3122 | |
3123 nextToken(); | |
3124 check(TOKlcurly); | |
3125 toklist = NULL; | |
3126 ptoklist = &toklist; | |
3127 label = NULL; | |
3128 statements = new Statements(); | |
3129 while (1) | |
3130 { | |
3131 switch (token.value) | |
3132 { | |
3133 case TOKidentifier: | |
3134 if (!toklist) | |
3135 { | |
3136 // Look ahead to see if it is a label | |
3137 t = peek(&token); | |
3138 if (t->value == TOKcolon) | |
3139 { // It's a label | |
3140 label = token.ident; | |
3141 labelloc = this->loc; | |
3142 nextToken(); | |
3143 nextToken(); | |
3144 continue; | |
3145 } | |
3146 } | |
3147 goto Ldefault; | |
3148 | |
3149 case TOKrcurly: | |
3150 if (toklist || label) | |
3151 { | |
3152 error("asm statements must end in ';'"); | |
3153 } | |
3154 break; | |
3155 | |
3156 case TOKsemicolon: | |
3157 s = NULL; | |
3158 if (toklist || label) | |
3159 { // Create AsmStatement from list of tokens we've saved | |
3160 s = new AsmStatement(this->loc, toklist); | |
3161 toklist = NULL; | |
3162 ptoklist = &toklist; | |
3163 if (label) | |
3164 { s = new LabelStatement(labelloc, label, s); | |
3165 label = NULL; | |
3166 } | |
3167 statements->push(s); | |
3168 } | |
3169 nextToken(); | |
3170 continue; | |
3171 | |
3172 case TOKeof: | |
3173 /* { */ | |
3174 error("matching '}' expected, not end of file"); | |
3175 break; | |
3176 | |
3177 default: | |
3178 Ldefault: | |
3179 *ptoklist = new Token(); | |
3180 memcpy(*ptoklist, &token, sizeof(Token)); | |
3181 ptoklist = &(*ptoklist)->next; | |
3182 *ptoklist = NULL; | |
3183 | |
3184 nextToken(); | |
3185 continue; | |
3186 } | |
3187 break; | |
3188 } | |
3189 s = new CompoundStatement(loc, statements); | |
3190 nextToken(); | |
3191 break; | |
3192 } | |
3193 | |
3194 default: | |
3195 error("found '%s' instead of statement", token.toChars()); | |
3196 goto Lerror; | |
3197 | |
3198 Lerror: | |
3199 while (token.value != TOKrcurly && | |
3200 token.value != TOKsemicolon && | |
3201 token.value != TOKeof) | |
3202 nextToken(); | |
3203 if (token.value == TOKsemicolon) | |
3204 nextToken(); | |
3205 s = NULL; | |
3206 break; | |
3207 } | |
3208 | |
3209 return s; | |
3210 } | |
3211 | |
3212 void Parser::check(enum TOK value) | |
3213 { | |
3214 check(loc, value); | |
3215 } | |
3216 | |
3217 void Parser::check(Loc loc, enum TOK value) | |
3218 { | |
3219 if (token.value != value) | |
3220 error(loc, "found '%s' when expecting '%s'", token.toChars(), Token::toChars(value)); | |
3221 nextToken(); | |
3222 } | |
3223 | |
3224 void Parser::check(enum TOK value, char *string) | |
3225 { | |
3226 if (token.value != value) | |
3227 error("found '%s' when expecting '%s' following '%s'", | |
3228 token.toChars(), Token::toChars(value), string); | |
3229 nextToken(); | |
3230 } | |
3231 | |
3232 /************************************ | |
3233 * Determine if the scanner is sitting on the start of a declaration. | |
3234 * Input: | |
3235 * needId 0 no identifier | |
3236 * 1 identifier optional | |
3237 * 2 must have identifier | |
3238 */ | |
3239 | |
3240 int Parser::isDeclaration(Token *t, int needId, enum TOK endtok, Token **pt) | |
3241 { | |
3242 int haveId = 0; | |
3243 | |
3244 if (!isBasicType(&t)) | |
3245 return FALSE; | |
3246 if (!isDeclarator(&t, &haveId, endtok)) | |
3247 return FALSE; | |
3248 if ( needId == 1 || | |
3249 (needId == 0 && !haveId) || | |
3250 (needId == 2 && haveId)) | |
3251 { if (pt) | |
3252 *pt = t; | |
3253 return TRUE; | |
3254 } | |
3255 else | |
3256 return FALSE; | |
3257 } | |
3258 | |
3259 int Parser::isBasicType(Token **pt) | |
3260 { | |
3261 // This code parallels parseBasicType() | |
3262 Token *t = *pt; | |
3263 Token *t2; | |
3264 int parens; | |
3265 | |
3266 switch (t->value) | |
3267 { | |
3268 CASE_BASIC_TYPES: | |
3269 t = peek(t); | |
3270 break; | |
3271 | |
3272 case TOKidentifier: | |
3273 t = peek(t); | |
3274 if (t->value == TOKnot) | |
3275 { | |
3276 goto L4; | |
3277 } | |
3278 goto L3; | |
3279 while (1) | |
3280 { | |
3281 L2: | |
3282 t = peek(t); | |
3283 L3: | |
3284 if (t->value == TOKdot) | |
3285 { | |
3286 Ldot: | |
3287 t = peek(t); | |
3288 if (t->value != TOKidentifier) | |
3289 goto Lfalse; | |
3290 t = peek(t); | |
3291 if (t->value != TOKnot) | |
3292 goto L3; | |
3293 L4: | |
3294 t = peek(t); | |
3295 if (t->value != TOKlparen) | |
3296 goto Lfalse; | |
3297 if (!skipParens(t, &t)) | |
3298 goto Lfalse; | |
3299 } | |
3300 else | |
3301 break; | |
3302 } | |
3303 break; | |
3304 | |
3305 case TOKdot: | |
3306 goto Ldot; | |
3307 | |
3308 case TOKtypeof: | |
3309 /* typeof(exp).identifier... | |
3310 */ | |
3311 t = peek(t); | |
3312 if (t->value != TOKlparen) | |
3313 goto Lfalse; | |
3314 if (!skipParens(t, &t)) | |
3315 goto Lfalse; | |
3316 goto L2; | |
3317 | |
3318 default: | |
3319 goto Lfalse; | |
3320 } | |
3321 *pt = t; | |
3322 return TRUE; | |
3323 | |
3324 Lfalse: | |
3325 return FALSE; | |
3326 } | |
3327 | |
3328 int Parser::isDeclarator(Token **pt, int *haveId, enum TOK endtok) | |
3329 { // This code parallels parseDeclarator() | |
3330 Token *t = *pt; | |
3331 int parens; | |
3332 | |
3333 //printf("Parser::isDeclarator()\n"); | |
3334 //t->print(); | |
3335 if (t->value == TOKassign) | |
3336 return FALSE; | |
3337 | |
3338 while (1) | |
3339 { | |
3340 parens = FALSE; | |
3341 switch (t->value) | |
3342 { | |
3343 case TOKmul: | |
3344 case TOKand: | |
3345 t = peek(t); | |
3346 continue; | |
3347 | |
3348 case TOKlbracket: | |
3349 t = peek(t); | |
3350 if (t->value == TOKrbracket) | |
3351 { | |
3352 t = peek(t); | |
3353 } | |
3354 else if (isDeclaration(t, 0, TOKrbracket, &t)) | |
3355 { // It's an associative array declaration | |
3356 t = peek(t); | |
3357 } | |
3358 else | |
3359 { | |
3360 // [ expression ] | |
3361 // [ expression .. expression ] | |
3362 if (!isExpression(&t)) | |
3363 return FALSE; | |
3364 if (t->value == TOKslice) | |
3365 { t = peek(t); | |
3366 if (!isExpression(&t)) | |
3367 return FALSE; | |
3368 } | |
3369 if (t->value != TOKrbracket) | |
3370 return FALSE; | |
3371 t = peek(t); | |
3372 } | |
3373 continue; | |
3374 | |
3375 case TOKidentifier: | |
3376 if (*haveId) | |
3377 return FALSE; | |
3378 *haveId = TRUE; | |
3379 t = peek(t); | |
3380 break; | |
3381 | |
3382 case TOKlparen: | |
3383 t = peek(t); | |
3384 | |
3385 if (t->value == TOKrparen) | |
3386 return FALSE; // () is not a declarator | |
3387 | |
3388 /* Regard ( identifier ) as not a declarator | |
3389 * BUG: what about ( *identifier ) in | |
3390 * f(*p)(x); | |
3391 * where f is a class instance with overloaded () ? | |
3392 * Should we just disallow C-style function pointer declarations? | |
3393 */ | |
3394 if (t->value == TOKidentifier) | |
3395 { Token *t2 = peek(t); | |
3396 if (t2->value == TOKrparen) | |
3397 return FALSE; | |
3398 } | |
3399 | |
3400 | |
3401 if (!isDeclarator(&t, haveId, TOKrparen)) | |
3402 return FALSE; | |
3403 t = peek(t); | |
3404 parens = TRUE; | |
3405 break; | |
3406 | |
3407 case TOKdelegate: | |
3408 case TOKfunction: | |
3409 t = peek(t); | |
3410 if (!isParameters(&t)) | |
3411 return FALSE; | |
3412 continue; | |
3413 } | |
3414 break; | |
3415 } | |
3416 | |
3417 while (1) | |
3418 { | |
3419 switch (t->value) | |
3420 { | |
3421 #if CARRAYDECL | |
3422 case TOKlbracket: | |
3423 parens = FALSE; | |
3424 t = peek(t); | |
3425 if (t->value == TOKrbracket) | |
3426 { | |
3427 t = peek(t); | |
3428 } | |
3429 else if (isDeclaration(t, 0, TOKrbracket, &t)) | |
3430 { // It's an associative array declaration | |
3431 t = peek(t); | |
3432 } | |
3433 else | |
3434 { | |
3435 // [ expression ] | |
3436 if (!isExpression(&t)) | |
3437 return FALSE; | |
3438 if (t->value != TOKrbracket) | |
3439 return FALSE; | |
3440 t = peek(t); | |
3441 } | |
3442 continue; | |
3443 #endif | |
3444 | |
3445 case TOKlparen: | |
3446 parens = FALSE; | |
3447 if (!isParameters(&t)) | |
3448 return FALSE; | |
3449 continue; | |
3450 | |
3451 // Valid tokens that follow a declaration | |
3452 case TOKrparen: | |
3453 case TOKrbracket: | |
3454 case TOKassign: | |
3455 case TOKcomma: | |
3456 case TOKsemicolon: | |
3457 case TOKlcurly: | |
3458 case TOKin: | |
3459 // The !parens is to disallow unnecessary parentheses | |
3460 if (!parens && (endtok == TOKreserved || endtok == t->value)) | |
3461 { *pt = t; | |
3462 return TRUE; | |
3463 } | |
3464 return FALSE; | |
3465 | |
3466 default: | |
3467 return FALSE; | |
3468 } | |
3469 } | |
3470 } | |
3471 | |
3472 | |
3473 int Parser::isParameters(Token **pt) | |
3474 { // This code parallels parseParameters() | |
3475 Token *t = *pt; | |
3476 int tmp; | |
3477 | |
3478 //printf("isParameters()\n"); | |
3479 if (t->value != TOKlparen) | |
3480 return FALSE; | |
3481 | |
3482 t = peek(t); | |
3483 while (1) | |
3484 { | |
3485 switch (t->value) | |
3486 { | |
3487 case TOKrparen: | |
3488 break; | |
3489 | |
3490 case TOKdotdotdot: | |
3491 t = peek(t); | |
3492 break; | |
3493 | |
3494 case TOKin: | |
3495 case TOKout: | |
3496 case TOKinout: | |
3497 case TOKref: | |
3498 case TOKlazy: | |
3499 t = peek(t); | |
3500 default: | |
3501 if (!isBasicType(&t)) | |
3502 return FALSE; | |
3503 tmp = FALSE; | |
3504 if (t->value != TOKdotdotdot && | |
3505 !isDeclarator(&t, &tmp, TOKreserved)) | |
3506 return FALSE; | |
3507 if (t->value == TOKassign) | |
3508 { t = peek(t); | |
3509 if (!isExpression(&t)) | |
3510 return FALSE; | |
3511 } | |
3512 if (t->value == TOKdotdotdot) | |
3513 { | |
3514 t = peek(t); | |
3515 break; | |
3516 } | |
3517 if (t->value == TOKcomma) | |
3518 { t = peek(t); | |
3519 continue; | |
3520 } | |
3521 break; | |
3522 } | |
3523 break; | |
3524 } | |
3525 if (t->value != TOKrparen) | |
3526 return FALSE; | |
3527 t = peek(t); | |
3528 *pt = t; | |
3529 return TRUE; | |
3530 } | |
3531 | |
3532 int Parser::isExpression(Token **pt) | |
3533 { | |
3534 // This is supposed to determine if something is an expression. | |
3535 // What it actually does is scan until a closing right bracket | |
3536 // is found. | |
3537 | |
3538 Token *t = *pt; | |
3539 int brnest = 0; | |
3540 int panest = 0; | |
3541 | |
3542 for (;; t = peek(t)) | |
3543 { | |
3544 switch (t->value) | |
3545 { | |
3546 case TOKlbracket: | |
3547 brnest++; | |
3548 continue; | |
3549 | |
3550 case TOKrbracket: | |
3551 if (--brnest >= 0) | |
3552 continue; | |
3553 break; | |
3554 | |
3555 case TOKlparen: | |
3556 panest++; | |
3557 continue; | |
3558 | |
3559 case TOKcomma: | |
3560 if (brnest || panest) | |
3561 continue; | |
3562 break; | |
3563 | |
3564 case TOKrparen: | |
3565 if (--panest >= 0) | |
3566 continue; | |
3567 break; | |
3568 | |
3569 case TOKslice: | |
3570 if (brnest) | |
3571 continue; | |
3572 break; | |
3573 | |
3574 case TOKeof: | |
3575 return FALSE; | |
3576 | |
3577 default: | |
3578 continue; | |
3579 } | |
3580 break; | |
3581 } | |
3582 | |
3583 *pt = t; | |
3584 return TRUE; | |
3585 } | |
3586 | |
3587 /********************************************** | |
3588 * Skip over | |
3589 * instance foo.bar(parameters...) | |
3590 * Output: | |
3591 * if (pt), *pt is set to the token following the closing ) | |
3592 * Returns: | |
3593 * 1 it's valid instance syntax | |
3594 * 0 invalid instance syntax | |
3595 */ | |
3596 | |
3597 int Parser::isTemplateInstance(Token *t, Token **pt) | |
3598 { | |
3599 t = peek(t); | |
3600 if (t->value != TOKdot) | |
3601 { | |
3602 if (t->value != TOKidentifier) | |
3603 goto Lfalse; | |
3604 t = peek(t); | |
3605 } | |
3606 while (t->value == TOKdot) | |
3607 { | |
3608 t = peek(t); | |
3609 if (t->value != TOKidentifier) | |
3610 goto Lfalse; | |
3611 t = peek(t); | |
3612 } | |
3613 if (t->value != TOKlparen) | |
3614 goto Lfalse; | |
3615 | |
3616 // Skip over the template arguments | |
3617 while (1) | |
3618 { | |
3619 while (1) | |
3620 { | |
3621 t = peek(t); | |
3622 switch (t->value) | |
3623 { | |
3624 case TOKlparen: | |
3625 if (!skipParens(t, &t)) | |
3626 goto Lfalse; | |
3627 continue; | |
3628 case TOKrparen: | |
3629 break; | |
3630 case TOKcomma: | |
3631 break; | |
3632 case TOKeof: | |
3633 case TOKsemicolon: | |
3634 goto Lfalse; | |
3635 default: | |
3636 continue; | |
3637 } | |
3638 break; | |
3639 } | |
3640 | |
3641 if (t->value != TOKcomma) | |
3642 break; | |
3643 } | |
3644 if (t->value != TOKrparen) | |
3645 goto Lfalse; | |
3646 t = peek(t); | |
3647 if (pt) | |
3648 *pt = t; | |
3649 return 1; | |
3650 | |
3651 Lfalse: | |
3652 return 0; | |
3653 } | |
3654 | |
3655 /******************************************* | |
3656 * Skip parens, brackets. | |
3657 * Input: | |
3658 * t is on opening ( | |
3659 * Output: | |
3660 * *pt is set to closing token, which is ')' on success | |
3661 * Returns: | |
3662 * !=0 successful | |
3663 * 0 some parsing error | |
3664 */ | |
3665 | |
3666 int Parser::skipParens(Token *t, Token **pt) | |
3667 { | |
3668 int parens = 0; | |
3669 | |
3670 while (1) | |
3671 { | |
3672 switch (t->value) | |
3673 { | |
3674 case TOKlparen: | |
3675 parens++; | |
3676 break; | |
3677 | |
3678 case TOKrparen: | |
3679 parens--; | |
3680 if (parens < 0) | |
3681 goto Lfalse; | |
3682 if (parens == 0) | |
3683 goto Ldone; | |
3684 break; | |
3685 | |
3686 case TOKeof: | |
3687 case TOKsemicolon: | |
3688 goto Lfalse; | |
3689 | |
3690 default: | |
3691 break; | |
3692 } | |
3693 t = peek(t); | |
3694 } | |
3695 | |
3696 Ldone: | |
3697 if (*pt) | |
3698 *pt = t; | |
3699 return 1; | |
3700 | |
3701 Lfalse: | |
3702 return 0; | |
3703 } | |
3704 | |
3705 /********************************* Expression Parser ***************************/ | |
3706 | |
3707 Expression *Parser::parsePrimaryExp() | |
3708 { Expression *e; | |
3709 Type *t; | |
3710 Identifier *id; | |
3711 enum TOK save; | |
3712 Loc loc = this->loc; | |
3713 | |
3714 switch (token.value) | |
3715 { | |
3716 case TOKidentifier: | |
3717 id = token.ident; | |
3718 nextToken(); | |
3719 if (token.value == TOKnot && peek(&token)->value == TOKlparen) | |
3720 { // identifier!(template-argument-list) | |
3721 TemplateInstance *tempinst; | |
3722 | |
3723 tempinst = new TemplateInstance(loc, id); | |
3724 nextToken(); | |
3725 tempinst->tiargs = parseTemplateArgumentList(); | |
3726 e = new ScopeExp(loc, tempinst); | |
3727 } | |
3728 else | |
3729 e = new IdentifierExp(loc, id); | |
3730 break; | |
3731 | |
3732 case TOKdollar: | |
3733 if (!inBrackets) | |
3734 error("'$' is valid only inside [] of index or slice"); | |
3735 e = new DollarExp(loc); | |
3736 nextToken(); | |
3737 break; | |
3738 | |
3739 case TOKdot: | |
3740 // Signal global scope '.' operator with "" identifier | |
3741 e = new IdentifierExp(loc, Id::empty); | |
3742 break; | |
3743 | |
3744 case TOKthis: | |
3745 e = new ThisExp(loc); | |
3746 nextToken(); | |
3747 break; | |
3748 | |
3749 case TOKsuper: | |
3750 e = new SuperExp(loc); | |
3751 nextToken(); | |
3752 break; | |
3753 | |
3754 case TOKint32v: | |
3755 e = new IntegerExp(loc, token.int32value, Type::tint32); | |
3756 nextToken(); | |
3757 break; | |
3758 | |
3759 case TOKuns32v: | |
3760 e = new IntegerExp(loc, token.uns32value, Type::tuns32); | |
3761 nextToken(); | |
3762 break; | |
3763 | |
3764 case TOKint64v: | |
3765 e = new IntegerExp(loc, token.int64value, Type::tint64); | |
3766 nextToken(); | |
3767 break; | |
3768 | |
3769 case TOKuns64v: | |
3770 e = new IntegerExp(loc, token.uns64value, Type::tuns64); | |
3771 nextToken(); | |
3772 break; | |
3773 | |
3774 case TOKfloat32v: | |
3775 e = new RealExp(loc, token.float80value, Type::tfloat32); | |
3776 nextToken(); | |
3777 break; | |
3778 | |
3779 case TOKfloat64v: | |
3780 e = new RealExp(loc, token.float80value, Type::tfloat64); | |
3781 nextToken(); | |
3782 break; | |
3783 | |
3784 case TOKfloat80v: | |
3785 e = new RealExp(loc, token.float80value, Type::tfloat80); | |
3786 nextToken(); | |
3787 break; | |
3788 | |
3789 case TOKimaginary32v: | |
3790 e = new RealExp(loc, token.float80value, Type::timaginary32); | |
3791 nextToken(); | |
3792 break; | |
3793 | |
3794 case TOKimaginary64v: | |
3795 e = new RealExp(loc, token.float80value, Type::timaginary64); | |
3796 nextToken(); | |
3797 break; | |
3798 | |
3799 case TOKimaginary80v: | |
3800 e = new RealExp(loc, token.float80value, Type::timaginary80); | |
3801 nextToken(); | |
3802 break; | |
3803 | |
3804 case TOKnull: | |
3805 e = new NullExp(loc); | |
3806 nextToken(); | |
3807 break; | |
3808 | |
3809 case TOKtrue: | |
3810 e = new IntegerExp(loc, 1, Type::tbool); | |
3811 nextToken(); | |
3812 break; | |
3813 | |
3814 case TOKfalse: | |
3815 e = new IntegerExp(loc, 0, Type::tbool); | |
3816 nextToken(); | |
3817 break; | |
3818 | |
3819 case TOKcharv: | |
3820 e = new IntegerExp(loc, token.uns32value, Type::tchar); | |
3821 nextToken(); | |
3822 break; | |
3823 | |
3824 case TOKwcharv: | |
3825 e = new IntegerExp(loc, token.uns32value, Type::twchar); | |
3826 nextToken(); | |
3827 break; | |
3828 | |
3829 case TOKdcharv: | |
3830 e = new IntegerExp(loc, token.uns32value, Type::tdchar); | |
3831 nextToken(); | |
3832 break; | |
3833 | |
3834 case TOKstring: | |
3835 { unsigned char *s; | |
3836 unsigned len; | |
3837 unsigned char postfix; | |
3838 | |
3839 // cat adjacent strings | |
3840 s = token.ustring; | |
3841 len = token.len; | |
3842 postfix = token.postfix; | |
3843 while (1) | |
3844 { | |
3845 nextToken(); | |
3846 if (token.value == TOKstring) | |
3847 { unsigned len1; | |
3848 unsigned len2; | |
3849 unsigned char *s2; | |
3850 | |
3851 if (token.postfix) | |
3852 { if (token.postfix != postfix) | |
3853 error("mismatched string literal postfixes '%c' and '%c'", postfix, token.postfix); | |
3854 postfix = token.postfix; | |
3855 } | |
3856 | |
3857 len1 = len; | |
3858 len2 = token.len; | |
3859 len = len1 + len2; | |
3860 s2 = (unsigned char *)mem.malloc((len + 1) * sizeof(unsigned char)); | |
3861 memcpy(s2, s, len1 * sizeof(unsigned char)); | |
3862 memcpy(s2 + len1, token.ustring, (len2 + 1) * sizeof(unsigned char)); | |
3863 s = s2; | |
3864 } | |
3865 else | |
3866 break; | |
3867 } | |
3868 e = new StringExp(loc, s, len, postfix); | |
3869 break; | |
3870 } | |
3871 | |
3872 CASE_BASIC_TYPES_X(t): | |
3873 nextToken(); | |
3874 L1: | |
3875 check(TOKdot, t->toChars()); | |
3876 if (token.value != TOKidentifier) | |
3877 { error("found '%s' when expecting identifier following '%s.'", token.toChars(), t->toChars()); | |
3878 goto Lerr; | |
3879 } | |
3880 e = new TypeDotIdExp(loc, t, token.ident); | |
3881 nextToken(); | |
3882 break; | |
3883 | |
3884 case TOKtypeof: | |
3885 { Expression *exp; | |
3886 | |
3887 nextToken(); | |
3888 check(TOKlparen); | |
3889 exp = parseExpression(); | |
3890 check(TOKrparen); | |
3891 t = new TypeTypeof(loc, exp); | |
3892 if (token.value == TOKdot) | |
3893 goto L1; | |
3894 e = new TypeExp(loc, t); | |
3895 break; | |
3896 } | |
3897 | |
3898 case TOKtypeid: | |
3899 { Type *t; | |
3900 | |
3901 nextToken(); | |
3902 check(TOKlparen, "typeid"); | |
3903 t = parseBasicType(); | |
3904 t = parseDeclarator(t,NULL); // ( type ) | |
3905 check(TOKrparen); | |
3906 e = new TypeidExp(loc, t); | |
3907 break; | |
3908 } | |
3909 | |
3910 case TOKis: | |
3911 { Type *targ; | |
3912 Identifier *ident = NULL; | |
3913 Type *tspec = NULL; | |
3914 enum TOK tok = TOKreserved; | |
3915 enum TOK tok2 = TOKreserved; | |
3916 Loc loc = this->loc; | |
3917 | |
3918 nextToken(); | |
3919 if (token.value == TOKlparen) | |
3920 { | |
3921 nextToken(); | |
3922 targ = parseBasicType(); | |
3923 targ = parseDeclarator(targ, &ident); | |
3924 if (token.value == TOKcolon || token.value == TOKequal) | |
3925 { | |
3926 tok = token.value; | |
3927 nextToken(); | |
3928 if (tok == TOKequal && | |
3929 (token.value == TOKtypedef || | |
3930 token.value == TOKstruct || | |
3931 token.value == TOKunion || | |
3932 token.value == TOKclass || | |
3933 token.value == TOKsuper || | |
3934 token.value == TOKenum || | |
3935 token.value == TOKinterface || | |
3936 token.value == TOKfunction || | |
3937 token.value == TOKdelegate || | |
3938 token.value == TOKreturn)) | |
3939 { | |
3940 tok2 = token.value; | |
3941 nextToken(); | |
3942 } | |
3943 else | |
3944 { | |
3945 tspec = parseBasicType(); | |
3946 tspec = parseDeclarator(tspec, NULL); | |
3947 } | |
3948 } | |
3949 check(TOKrparen); | |
3950 } | |
3951 else | |
3952 { error("(type identifier : specialization) expected following is"); | |
3953 goto Lerr; | |
3954 } | |
19 | 3955 e = new IsExp(loc, targ, ident, tok, tspec, tok2); |
1 | 3956 break; |
3957 } | |
3958 | |
3959 case TOKassert: | |
3960 { Expression *msg = NULL; | |
3961 | |
3962 nextToken(); | |
3963 check(TOKlparen, "assert"); | |
3964 e = parseAssignExp(); | |
3965 if (token.value == TOKcomma) | |
3966 { nextToken(); | |
3967 msg = parseAssignExp(); | |
3968 } | |
3969 check(TOKrparen); | |
3970 e = new AssertExp(loc, e, msg); | |
3971 break; | |
3972 } | |
3973 | |
3974 case TOKmixin: | |
3975 { | |
3976 nextToken(); | |
3977 check(TOKlparen, "mixin"); | |
3978 e = parseAssignExp(); | |
3979 check(TOKrparen); | |
3980 e = new CompileExp(loc, e); | |
3981 break; | |
3982 } | |
3983 | |
3984 case TOKimport: | |
3985 { | |
3986 nextToken(); | |
3987 check(TOKlparen, "import"); | |
3988 e = parseAssignExp(); | |
3989 check(TOKrparen); | |
3990 e = new FileExp(loc, e); | |
3991 break; | |
3992 } | |
3993 | |
3994 case TOKlparen: | |
3995 if (peekPastParen(&token)->value == TOKlcurly) | |
3996 { // (arguments) { statements... } | |
3997 save = TOKdelegate; | |
3998 goto case_delegate; | |
3999 } | |
4000 // ( expression ) | |
4001 nextToken(); | |
4002 e = parseExpression(); | |
4003 check(loc, TOKrparen); | |
4004 break; | |
4005 | |
4006 case TOKlbracket: | |
4007 { /* Parse array literals and associative array literals: | |
4008 * [ value, value, value ... ] | |
4009 * [ key:value, key:value, key:value ... ] | |
4010 */ | |
4011 Expressions *values = new Expressions(); | |
4012 Expressions *keys = NULL; | |
4013 | |
4014 nextToken(); | |
4015 if (token.value != TOKrbracket) | |
4016 { | |
4017 while (1) | |
4018 { | |
4019 Expression *e = parseAssignExp(); | |
4020 if (token.value == TOKcolon && (keys || values->dim == 0)) | |
4021 { nextToken(); | |
4022 if (!keys) | |
4023 keys = new Expressions(); | |
4024 keys->push(e); | |
4025 e = parseAssignExp(); | |
4026 } | |
4027 else if (keys) | |
4028 { error("'key:value' expected for associative array literal"); | |
4029 delete keys; | |
4030 keys = NULL; | |
4031 } | |
4032 values->push(e); | |
4033 if (token.value == TOKrbracket) | |
4034 break; | |
4035 check(TOKcomma); | |
4036 } | |
4037 } | |
4038 check(TOKrbracket); | |
4039 | |
4040 if (keys) | |
4041 e = new AssocArrayLiteralExp(loc, keys, values); | |
4042 else | |
4043 e = new ArrayLiteralExp(loc, values); | |
4044 break; | |
4045 } | |
4046 | |
4047 case TOKlcurly: | |
4048 // { statements... } | |
4049 save = TOKdelegate; | |
4050 goto case_delegate; | |
4051 | |
4052 case TOKfunction: | |
4053 case TOKdelegate: | |
4054 save = token.value; | |
4055 nextToken(); | |
4056 case_delegate: | |
4057 { | |
4058 /* function type(parameters) { body } | |
4059 * delegate type(parameters) { body } | |
4060 */ | |
4061 Arguments *arguments; | |
4062 int varargs; | |
4063 FuncLiteralDeclaration *fd; | |
4064 Type *t; | |
4065 | |
4066 if (token.value == TOKlcurly) | |
4067 { | |
4068 t = NULL; | |
4069 varargs = 0; | |
4070 arguments = new Arguments(); | |
4071 } | |
4072 else | |
4073 { | |
4074 if (token.value == TOKlparen) | |
4075 t = NULL; | |
4076 else | |
4077 { | |
4078 t = parseBasicType(); | |
4079 t = parseBasicType2(t); // function return type | |
4080 } | |
4081 arguments = parseParameters(&varargs); | |
4082 } | |
4083 t = new TypeFunction(arguments, t, varargs, linkage); | |
4084 fd = new FuncLiteralDeclaration(loc, 0, t, save, NULL); | |
4085 parseContracts(fd); | |
4086 e = new FuncExp(loc, fd); | |
4087 break; | |
4088 } | |
4089 | |
4090 default: | |
4091 error("expression expected, not '%s'", token.toChars()); | |
4092 Lerr: | |
4093 // Anything for e, as long as it's not NULL | |
4094 e = new IntegerExp(loc, 0, Type::tint32); | |
4095 nextToken(); | |
4096 break; | |
4097 } | |
4098 return parsePostExp(e); | |
4099 } | |
4100 | |
4101 Expression *Parser::parsePostExp(Expression *e) | |
4102 { | |
4103 Loc loc; | |
4104 | |
4105 while (1) | |
4106 { | |
4107 loc = this->loc; | |
4108 switch (token.value) | |
4109 { | |
4110 case TOKdot: | |
4111 nextToken(); | |
4112 if (token.value == TOKidentifier) | |
4113 { Identifier *id = token.ident; | |
4114 | |
4115 nextToken(); | |
4116 if (token.value == TOKnot && peek(&token)->value == TOKlparen) | |
4117 { // identifier!(template-argument-list) | |
4118 TemplateInstance *tempinst; | |
4119 | |
4120 tempinst = new TemplateInstance(loc, id); | |
4121 nextToken(); | |
4122 tempinst->tiargs = parseTemplateArgumentList(); | |
4123 e = new DotTemplateInstanceExp(loc, e, tempinst); | |
4124 } | |
4125 else | |
4126 e = new DotIdExp(loc, e, id); | |
4127 continue; | |
4128 } | |
4129 else if (token.value == TOKnew) | |
4130 { | |
4131 e = parseNewExp(e); | |
4132 continue; | |
4133 } | |
4134 else | |
4135 error("identifier expected following '.', not '%s'", token.toChars()); | |
4136 break; | |
4137 | |
4138 case TOKplusplus: | |
4139 e = new PostExp(TOKplusplus, loc, e); | |
4140 break; | |
4141 | |
4142 case TOKminusminus: | |
4143 e = new PostExp(TOKminusminus, loc, e); | |
4144 break; | |
4145 | |
4146 case TOKlparen: | |
4147 e = new CallExp(loc, e, parseArguments()); | |
4148 continue; | |
4149 | |
4150 case TOKlbracket: | |
4151 { // array dereferences: | |
4152 // array[index] | |
4153 // array[] | |
4154 // array[lwr .. upr] | |
4155 Expression *index; | |
4156 Expression *upr; | |
4157 | |
4158 inBrackets++; | |
4159 nextToken(); | |
4160 if (token.value == TOKrbracket) | |
4161 { // array[] | |
4162 e = new SliceExp(loc, e, NULL, NULL); | |
4163 nextToken(); | |
4164 } | |
4165 else | |
4166 { | |
4167 index = parseAssignExp(); | |
4168 if (token.value == TOKslice) | |
4169 { // array[lwr .. upr] | |
4170 nextToken(); | |
4171 upr = parseAssignExp(); | |
4172 e = new SliceExp(loc, e, index, upr); | |
4173 } | |
4174 else | |
4175 { // array[index, i2, i3, i4, ...] | |
4176 Expressions *arguments = new Expressions(); | |
4177 arguments->push(index); | |
4178 if (token.value == TOKcomma) | |
4179 { | |
4180 nextToken(); | |
4181 while (1) | |
4182 { Expression *arg; | |
4183 | |
4184 arg = parseAssignExp(); | |
4185 arguments->push(arg); | |
4186 if (token.value == TOKrbracket) | |
4187 break; | |
4188 check(TOKcomma); | |
4189 } | |
4190 } | |
4191 e = new ArrayExp(loc, e, arguments); | |
4192 } | |
4193 check(TOKrbracket); | |
4194 inBrackets--; | |
4195 } | |
4196 continue; | |
4197 } | |
4198 | |
4199 default: | |
4200 return e; | |
4201 } | |
4202 nextToken(); | |
4203 } | |
4204 } | |
4205 | |
4206 Expression *Parser::parseUnaryExp() | |
4207 { Expression *e; | |
4208 Loc loc = this->loc; | |
4209 | |
4210 switch (token.value) | |
4211 { | |
4212 case TOKand: | |
4213 nextToken(); | |
4214 e = parseUnaryExp(); | |
4215 e = new AddrExp(loc, e); | |
4216 break; | |
4217 | |
4218 case TOKplusplus: | |
4219 nextToken(); | |
4220 e = parseUnaryExp(); | |
4221 e = new AddAssignExp(loc, e, new IntegerExp(loc, 1, Type::tint32)); | |
4222 break; | |
4223 | |
4224 case TOKminusminus: | |
4225 nextToken(); | |
4226 e = parseUnaryExp(); | |
4227 e = new MinAssignExp(loc, e, new IntegerExp(loc, 1, Type::tint32)); | |
4228 break; | |
4229 | |
4230 case TOKmul: | |
4231 nextToken(); | |
4232 e = parseUnaryExp(); | |
4233 e = new PtrExp(loc, e); | |
4234 break; | |
4235 | |
4236 case TOKmin: | |
4237 nextToken(); | |
4238 e = parseUnaryExp(); | |
4239 e = new NegExp(loc, e); | |
4240 break; | |
4241 | |
4242 case TOKadd: | |
4243 nextToken(); | |
4244 e = parseUnaryExp(); | |
4245 e = new UAddExp(loc, e); | |
4246 break; | |
4247 | |
4248 case TOKnot: | |
4249 nextToken(); | |
4250 e = parseUnaryExp(); | |
4251 e = new NotExp(loc, e); | |
4252 break; | |
4253 | |
4254 case TOKtilde: | |
4255 nextToken(); | |
4256 e = parseUnaryExp(); | |
4257 e = new ComExp(loc, e); | |
4258 break; | |
4259 | |
4260 case TOKdelete: | |
4261 nextToken(); | |
4262 e = parseUnaryExp(); | |
4263 e = new DeleteExp(loc, e); | |
4264 break; | |
4265 | |
4266 case TOKnew: | |
4267 e = parseNewExp(NULL); | |
4268 break; | |
4269 | |
4270 case TOKcast: // cast(type) expression | |
4271 { Type *t; | |
4272 | |
4273 nextToken(); | |
4274 check(TOKlparen); | |
4275 t = parseBasicType(); | |
4276 t = parseDeclarator(t,NULL); // ( type ) | |
4277 check(TOKrparen); | |
4278 | |
4279 e = parseUnaryExp(); | |
4280 e = new CastExp(loc, e, t); | |
4281 break; | |
4282 } | |
4283 | |
4284 case TOKlparen: | |
4285 { Token *tk; | |
4286 | |
4287 tk = peek(&token); | |
4288 #if CCASTSYNTAX | |
4289 // If cast | |
4290 if (isDeclaration(tk, 0, TOKrparen, &tk)) | |
4291 { | |
4292 tk = peek(tk); // skip over right parenthesis | |
4293 switch (tk->value) | |
4294 { | |
4295 case TOKdot: | |
4296 case TOKplusplus: | |
4297 case TOKminusminus: | |
4298 case TOKnot: | |
4299 case TOKdelete: | |
4300 case TOKnew: | |
4301 case TOKlparen: | |
4302 case TOKidentifier: | |
4303 case TOKthis: | |
4304 case TOKsuper: | |
4305 case TOKint32v: | |
4306 case TOKuns32v: | |
4307 case TOKint64v: | |
4308 case TOKuns64v: | |
4309 case TOKfloat32v: | |
4310 case TOKfloat64v: | |
4311 case TOKfloat80v: | |
4312 case TOKimaginary32v: | |
4313 case TOKimaginary64v: | |
4314 case TOKimaginary80v: | |
4315 case TOKnull: | |
4316 case TOKtrue: | |
4317 case TOKfalse: | |
4318 case TOKcharv: | |
4319 case TOKwcharv: | |
4320 case TOKdcharv: | |
4321 case TOKstring: | |
4322 #if 0 | |
4323 case TOKtilde: | |
4324 case TOKand: | |
4325 case TOKmul: | |
4326 case TOKmin: | |
4327 case TOKadd: | |
4328 #endif | |
4329 case TOKfunction: | |
4330 case TOKdelegate: | |
4331 case TOKtypeof: | |
4332 CASE_BASIC_TYPES: // (type)int.size | |
4333 { // (type) una_exp | |
4334 Type *t; | |
4335 | |
4336 nextToken(); | |
4337 t = parseBasicType(); | |
4338 t = parseDeclarator(t,NULL); | |
4339 check(TOKrparen); | |
4340 | |
4341 // if .identifier | |
4342 if (token.value == TOKdot) | |
4343 { | |
4344 nextToken(); | |
4345 if (token.value != TOKidentifier) | |
4346 { error("Identifier expected following (type)."); | |
4347 return NULL; | |
4348 } | |
4349 e = new TypeDotIdExp(loc, t, token.ident); | |
4350 nextToken(); | |
4351 e = parsePostExp(e); | |
4352 } | |
4353 else | |
4354 { | |
4355 e = parseUnaryExp(); | |
4356 e = new CastExp(loc, e, t); | |
4357 error("C style cast illegal, use %s", e->toChars()); | |
4358 } | |
4359 return e; | |
4360 } | |
4361 } | |
4362 } | |
4363 #endif | |
4364 e = parsePrimaryExp(); | |
4365 break; | |
4366 } | |
4367 default: | |
4368 e = parsePrimaryExp(); | |
4369 break; | |
4370 } | |
4371 assert(e); | |
4372 return e; | |
4373 } | |
4374 | |
4375 Expression *Parser::parseMulExp() | |
4376 { Expression *e; | |
4377 Expression *e2; | |
4378 Loc loc = this->loc; | |
4379 | |
4380 e = parseUnaryExp(); | |
4381 while (1) | |
4382 { | |
4383 switch (token.value) | |
4384 { | |
4385 case TOKmul: nextToken(); e2 = parseUnaryExp(); e = new MulExp(loc,e,e2); continue; | |
4386 case TOKdiv: nextToken(); e2 = parseUnaryExp(); e = new DivExp(loc,e,e2); continue; | |
4387 case TOKmod: nextToken(); e2 = parseUnaryExp(); e = new ModExp(loc,e,e2); continue; | |
4388 | |
4389 default: | |
4390 break; | |
4391 } | |
4392 break; | |
4393 } | |
4394 return e; | |
4395 } | |
4396 | |
4397 Expression *Parser::parseAddExp() | |
4398 { Expression *e; | |
4399 Expression *e2; | |
4400 Loc loc = this->loc; | |
4401 | |
4402 e = parseMulExp(); | |
4403 while (1) | |
4404 { | |
4405 switch (token.value) | |
4406 { | |
4407 case TOKadd: nextToken(); e2 = parseMulExp(); e = new AddExp(loc,e,e2); continue; | |
4408 case TOKmin: nextToken(); e2 = parseMulExp(); e = new MinExp(loc,e,e2); continue; | |
4409 case TOKtilde: nextToken(); e2 = parseMulExp(); e = new CatExp(loc,e,e2); continue; | |
4410 | |
4411 default: | |
4412 break; | |
4413 } | |
4414 break; | |
4415 } | |
4416 return e; | |
4417 } | |
4418 | |
4419 Expression *Parser::parseShiftExp() | |
4420 { Expression *e; | |
4421 Expression *e2; | |
4422 Loc loc = this->loc; | |
4423 | |
4424 e = parseAddExp(); | |
4425 while (1) | |
4426 { | |
4427 switch (token.value) | |
4428 { | |
4429 case TOKshl: nextToken(); e2 = parseAddExp(); e = new ShlExp(loc,e,e2); continue; | |
4430 case TOKshr: nextToken(); e2 = parseAddExp(); e = new ShrExp(loc,e,e2); continue; | |
4431 case TOKushr: nextToken(); e2 = parseAddExp(); e = new UshrExp(loc,e,e2); continue; | |
4432 | |
4433 default: | |
4434 break; | |
4435 } | |
4436 break; | |
4437 } | |
4438 return e; | |
4439 } | |
4440 | |
4441 Expression *Parser::parseRelExp() | |
4442 { Expression *e; | |
4443 Expression *e2; | |
4444 enum TOK op; | |
4445 Loc loc = this->loc; | |
4446 | |
4447 e = parseShiftExp(); | |
4448 while (1) | |
4449 { | |
4450 switch (token.value) | |
4451 { | |
4452 case TOKlt: | |
4453 case TOKle: | |
4454 case TOKgt: | |
4455 case TOKge: | |
4456 case TOKunord: | |
4457 case TOKlg: | |
4458 case TOKleg: | |
4459 case TOKule: | |
4460 case TOKul: | |
4461 case TOKuge: | |
4462 case TOKug: | |
4463 case TOKue: | |
4464 op = token.value; | |
4465 nextToken(); | |
4466 e2 = parseShiftExp(); | |
4467 e = new CmpExp(op, loc, e, e2); | |
4468 continue; | |
4469 | |
4470 case TOKin: | |
4471 nextToken(); | |
4472 e2 = parseShiftExp(); | |
4473 e = new InExp(loc, e, e2); | |
4474 continue; | |
4475 | |
4476 default: | |
4477 break; | |
4478 } | |
4479 break; | |
4480 } | |
4481 return e; | |
4482 } | |
4483 | |
4484 Expression *Parser::parseEqualExp() | |
4485 { Expression *e; | |
4486 Expression *e2; | |
4487 Token *t; | |
4488 Loc loc = this->loc; | |
4489 | |
4490 e = parseRelExp(); | |
4491 while (1) | |
4492 { enum TOK value = token.value; | |
4493 | |
4494 switch (value) | |
4495 { | |
4496 case TOKequal: | |
4497 case TOKnotequal: | |
4498 nextToken(); | |
4499 e2 = parseRelExp(); | |
4500 e = new EqualExp(value, loc, e, e2); | |
4501 continue; | |
4502 | |
4503 case TOKidentity: | |
4504 error("'===' is no longer legal, use 'is' instead"); | |
4505 goto L1; | |
4506 | |
4507 case TOKnotidentity: | |
4508 error("'!==' is no longer legal, use '!is' instead"); | |
4509 goto L1; | |
4510 | |
4511 case TOKis: | |
4512 value = TOKidentity; | |
4513 goto L1; | |
4514 | |
4515 case TOKnot: | |
4516 // Attempt to identify '!is' | |
4517 t = peek(&token); | |
4518 if (t->value != TOKis) | |
4519 break; | |
4520 nextToken(); | |
4521 value = TOKnotidentity; | |
4522 goto L1; | |
4523 | |
4524 L1: | |
4525 nextToken(); | |
4526 e2 = parseRelExp(); | |
4527 e = new IdentityExp(value, loc, e, e2); | |
4528 continue; | |
4529 | |
4530 default: | |
4531 break; | |
4532 } | |
4533 break; | |
4534 } | |
4535 return e; | |
4536 } | |
4537 | |
4538 Expression *Parser::parseCmpExp() | |
4539 { Expression *e; | |
4540 Expression *e2; | |
4541 Token *t; | |
4542 Loc loc = this->loc; | |
4543 | |
4544 e = parseShiftExp(); | |
4545 enum TOK op = token.value; | |
4546 | |
4547 switch (op) | |
4548 { | |
4549 case TOKequal: | |
4550 case TOKnotequal: | |
4551 nextToken(); | |
4552 e2 = parseShiftExp(); | |
4553 e = new EqualExp(op, loc, e, e2); | |
4554 break; | |
4555 | |
4556 case TOKis: | |
4557 op = TOKidentity; | |
4558 goto L1; | |
4559 | |
4560 case TOKnot: | |
4561 // Attempt to identify '!is' | |
4562 t = peek(&token); | |
4563 if (t->value != TOKis) | |
4564 break; | |
4565 nextToken(); | |
4566 op = TOKnotidentity; | |
4567 goto L1; | |
4568 | |
4569 L1: | |
4570 nextToken(); | |
4571 e2 = parseShiftExp(); | |
4572 e = new IdentityExp(op, loc, e, e2); | |
4573 break; | |
4574 | |
4575 case TOKlt: | |
4576 case TOKle: | |
4577 case TOKgt: | |
4578 case TOKge: | |
4579 case TOKunord: | |
4580 case TOKlg: | |
4581 case TOKleg: | |
4582 case TOKule: | |
4583 case TOKul: | |
4584 case TOKuge: | |
4585 case TOKug: | |
4586 case TOKue: | |
4587 nextToken(); | |
4588 e2 = parseShiftExp(); | |
4589 e = new CmpExp(op, loc, e, e2); | |
4590 break; | |
4591 | |
4592 case TOKin: | |
4593 nextToken(); | |
4594 e2 = parseShiftExp(); | |
4595 e = new InExp(loc, e, e2); | |
4596 break; | |
4597 | |
4598 default: | |
4599 break; | |
4600 } | |
4601 return e; | |
4602 } | |
4603 | |
4604 Expression *Parser::parseAndExp() | |
4605 { Expression *e; | |
4606 Expression *e2; | |
4607 Loc loc = this->loc; | |
4608 | |
4609 if (global.params.Dversion == 1) | |
4610 { | |
4611 e = parseEqualExp(); | |
4612 while (token.value == TOKand) | |
4613 { | |
4614 nextToken(); | |
4615 e2 = parseEqualExp(); | |
4616 e = new AndExp(loc,e,e2); | |
4617 loc = this->loc; | |
4618 } | |
4619 } | |
4620 else | |
4621 { | |
4622 e = parseCmpExp(); | |
4623 while (token.value == TOKand) | |
4624 { | |
4625 nextToken(); | |
4626 e2 = parseCmpExp(); | |
4627 e = new AndExp(loc,e,e2); | |
4628 loc = this->loc; | |
4629 } | |
4630 } | |
4631 return e; | |
4632 } | |
4633 | |
4634 Expression *Parser::parseXorExp() | |
4635 { Expression *e; | |
4636 Expression *e2; | |
4637 Loc loc = this->loc; | |
4638 | |
4639 e = parseAndExp(); | |
4640 while (token.value == TOKxor) | |
4641 { | |
4642 nextToken(); | |
4643 e2 = parseAndExp(); | |
4644 e = new XorExp(loc, e, e2); | |
4645 } | |
4646 return e; | |
4647 } | |
4648 | |
4649 Expression *Parser::parseOrExp() | |
4650 { Expression *e; | |
4651 Expression *e2; | |
4652 Loc loc = this->loc; | |
4653 | |
4654 e = parseXorExp(); | |
4655 while (token.value == TOKor) | |
4656 { | |
4657 nextToken(); | |
4658 e2 = parseXorExp(); | |
4659 e = new OrExp(loc, e, e2); | |
4660 } | |
4661 return e; | |
4662 } | |
4663 | |
4664 Expression *Parser::parseAndAndExp() | |
4665 { Expression *e; | |
4666 Expression *e2; | |
4667 Loc loc = this->loc; | |
4668 | |
4669 e = parseOrExp(); | |
4670 while (token.value == TOKandand) | |
4671 { | |
4672 nextToken(); | |
4673 e2 = parseOrExp(); | |
4674 e = new AndAndExp(loc, e, e2); | |
4675 } | |
4676 return e; | |
4677 } | |
4678 | |
4679 Expression *Parser::parseOrOrExp() | |
4680 { Expression *e; | |
4681 Expression *e2; | |
4682 Loc loc = this->loc; | |
4683 | |
4684 e = parseAndAndExp(); | |
4685 while (token.value == TOKoror) | |
4686 { | |
4687 nextToken(); | |
4688 e2 = parseAndAndExp(); | |
4689 e = new OrOrExp(loc, e, e2); | |
4690 } | |
4691 return e; | |
4692 } | |
4693 | |
4694 Expression *Parser::parseCondExp() | |
4695 { Expression *e; | |
4696 Expression *e1; | |
4697 Expression *e2; | |
4698 Loc loc = this->loc; | |
4699 | |
4700 e = parseOrOrExp(); | |
4701 if (token.value == TOKquestion) | |
4702 { | |
4703 nextToken(); | |
4704 e1 = parseExpression(); | |
4705 check(TOKcolon); | |
4706 e2 = parseCondExp(); | |
4707 e = new CondExp(loc, e, e1, e2); | |
4708 } | |
4709 return e; | |
4710 } | |
4711 | |
4712 Expression *Parser::parseAssignExp() | |
4713 { Expression *e; | |
4714 Expression *e2; | |
4715 Loc loc; | |
4716 | |
4717 e = parseCondExp(); | |
4718 while (1) | |
4719 { | |
4720 loc = this->loc; | |
4721 switch (token.value) | |
4722 { | |
4723 #define X(tok,ector) \ | |
4724 case tok: nextToken(); e2 = parseAssignExp(); e = new ector(loc,e,e2); continue; | |
4725 | |
4726 X(TOKassign, AssignExp); | |
4727 X(TOKaddass, AddAssignExp); | |
4728 X(TOKminass, MinAssignExp); | |
4729 X(TOKmulass, MulAssignExp); | |
4730 X(TOKdivass, DivAssignExp); | |
4731 X(TOKmodass, ModAssignExp); | |
4732 X(TOKandass, AndAssignExp); | |
4733 X(TOKorass, OrAssignExp); | |
4734 X(TOKxorass, XorAssignExp); | |
4735 X(TOKshlass, ShlAssignExp); | |
4736 X(TOKshrass, ShrAssignExp); | |
4737 X(TOKushrass, UshrAssignExp); | |
4738 X(TOKcatass, CatAssignExp); | |
4739 | |
4740 #undef X | |
4741 default: | |
4742 break; | |
4743 } | |
4744 break; | |
4745 } | |
4746 return e; | |
4747 } | |
4748 | |
4749 Expression *Parser::parseExpression() | |
4750 { Expression *e; | |
4751 Expression *e2; | |
4752 Loc loc = this->loc; | |
4753 | |
4754 //printf("Parser::parseExpression()\n"); | |
4755 e = parseAssignExp(); | |
4756 while (token.value == TOKcomma) | |
4757 { | |
4758 nextToken(); | |
4759 e2 = parseAssignExp(); | |
4760 e = new CommaExp(loc, e, e2); | |
4761 loc = this->loc; | |
4762 } | |
4763 return e; | |
4764 } | |
4765 | |
4766 | |
4767 /************************* | |
4768 * Collect argument list. | |
4769 * Assume current token is '(' or '['. | |
4770 */ | |
4771 | |
4772 Expressions *Parser::parseArguments() | |
4773 { // function call | |
4774 Expressions *arguments; | |
4775 Expression *arg; | |
4776 enum TOK endtok; | |
4777 | |
4778 arguments = new Expressions(); | |
4779 if (token.value == TOKlbracket) | |
4780 endtok = TOKrbracket; | |
4781 else | |
4782 endtok = TOKrparen; | |
4783 | |
4784 { | |
4785 nextToken(); | |
4786 if (token.value != endtok) | |
4787 { | |
4788 while (1) | |
4789 { | |
4790 arg = parseAssignExp(); | |
4791 arguments->push(arg); | |
4792 if (token.value == endtok) | |
4793 break; | |
4794 check(TOKcomma); | |
4795 } | |
4796 } | |
4797 check(endtok); | |
4798 } | |
4799 return arguments; | |
4800 } | |
4801 | |
4802 /******************************************* | |
4803 */ | |
4804 | |
4805 Expression *Parser::parseNewExp(Expression *thisexp) | |
4806 { Type *t; | |
4807 Expressions *newargs; | |
4808 Expressions *arguments = NULL; | |
4809 Expression *e; | |
4810 Loc loc = this->loc; | |
4811 | |
4812 nextToken(); | |
4813 newargs = NULL; | |
4814 if (token.value == TOKlparen) | |
4815 { | |
4816 newargs = parseArguments(); | |
4817 } | |
4818 | |
4819 // An anonymous nested class starts with "class" | |
4820 if (token.value == TOKclass) | |
4821 { | |
4822 nextToken(); | |
4823 if (token.value == TOKlparen) | |
4824 arguments = parseArguments(); | |
4825 | |
4826 BaseClasses *baseclasses = NULL; | |
4827 if (token.value != TOKlcurly) | |
4828 baseclasses = parseBaseClasses(); | |
4829 | |
4830 Identifier *id = NULL; | |
4831 ClassDeclaration *cd = new ClassDeclaration(loc, id, baseclasses); | |
4832 | |
4833 if (token.value != TOKlcurly) | |
4834 { error("{ members } expected for anonymous class"); | |
4835 cd->members = NULL; | |
4836 } | |
4837 else | |
4838 { | |
4839 nextToken(); | |
4840 Array *decl = parseDeclDefs(0); | |
4841 if (token.value != TOKrcurly) | |
4842 error("class member expected"); | |
4843 nextToken(); | |
4844 cd->members = decl; | |
4845 } | |
4846 | |
4847 e = new NewAnonClassExp(loc, thisexp, newargs, cd, arguments); | |
4848 | |
4849 return e; | |
4850 } | |
4851 | |
4852 #if LTORARRAYDECL | |
4853 t = parseBasicType(); | |
4854 t = parseBasicType2(t); | |
4855 if (t->ty == Taarray) | |
4856 { | |
4857 Type *index = ((TypeAArray *)t)->index; | |
4858 | |
4859 Expression *e = index->toExpression(); | |
4860 if (e) | |
4861 { arguments = new Expressions(); | |
4862 arguments->push(e); | |
4863 t = new TypeDArray(t->next); | |
4864 } | |
4865 else | |
4866 { | |
4867 error("need size of rightmost array, not type %s", index->toChars()); | |
4868 return new NullExp(loc); | |
4869 } | |
4870 } | |
4871 else if (t->ty == Tsarray) | |
4872 { | |
4873 TypeSArray *tsa = (TypeSArray *)t; | |
4874 Expression *e = tsa->dim; | |
4875 | |
4876 arguments = new Expressions(); | |
4877 arguments->push(e); | |
4878 t = new TypeDArray(t->next); | |
4879 } | |
4880 else if (token.value == TOKlparen) | |
4881 { | |
4882 arguments = parseArguments(); | |
4883 } | |
4884 #else | |
4885 t = parseBasicType(); | |
4886 while (token.value == TOKmul) | |
4887 { t = new TypePointer(t); | |
4888 nextToken(); | |
4889 } | |
4890 if (token.value == TOKlbracket) | |
4891 { | |
4892 Expression *e; | |
4893 | |
4894 nextToken(); | |
4895 e = parseAssignExp(); | |
4896 arguments = new Array(); | |
4897 arguments->push(e); | |
4898 check(TOKrbracket); | |
4899 t = parseDeclarator(t, NULL); | |
4900 t = new TypeDArray(t); | |
4901 } | |
4902 else if (token.value == TOKlparen) | |
4903 arguments = parseArguments(); | |
4904 #endif | |
4905 e = new NewExp(loc, thisexp, newargs, t, arguments); | |
4906 return e; | |
4907 } | |
4908 | |
4909 /********************************************** | |
4910 */ | |
4911 | |
4912 void Parser::addComment(Dsymbol *s, unsigned char *blockComment) | |
4913 { | |
4914 s->addComment(combineComments(blockComment, token.lineComment)); | |
4915 } | |
4916 | |
4917 | |
4918 /********************************* ***************************/ | |
4919 |