Mercurial > projects > ldc
comparison dmd2/parse.c @ 758:f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
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date | Tue, 11 Nov 2008 01:38:48 +0100 |
parents | |
children | 356e65836fb5 |
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757:2c730d530c98 | 758:f04dde6e882c |
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1 | |
2 // Compiler implementation of the D programming language | |
3 // Copyright (c) 1999-2008 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 // This is the D parser | |
12 | |
13 #include <stdio.h> | |
14 #include <assert.h> | |
15 | |
16 #include "mem.h" | |
17 #include "lexer.h" | |
18 #include "parse.h" | |
19 #include "init.h" | |
20 #include "attrib.h" | |
21 #include "cond.h" | |
22 #include "mtype.h" | |
23 #include "template.h" | |
24 #include "staticassert.h" | |
25 #include "expression.h" | |
26 #include "statement.h" | |
27 #include "module.h" | |
28 #include "dsymbol.h" | |
29 #include "import.h" | |
30 #include "declaration.h" | |
31 #include "aggregate.h" | |
32 #include "enum.h" | |
33 #include "id.h" | |
34 #include "version.h" | |
35 | |
36 // How multiple declarations are parsed. | |
37 // If 1, treat as C. | |
38 // If 0, treat: | |
39 // int *p, i; | |
40 // as: | |
41 // int* p; | |
42 // int* i; | |
43 #define CDECLSYNTAX 0 | |
44 | |
45 // Support C cast syntax: | |
46 // (type)(expression) | |
47 #define CCASTSYNTAX 1 | |
48 | |
49 // Support postfix C array declarations, such as | |
50 // int a[3][4]; | |
51 #define CARRAYDECL 1 | |
52 | |
53 | |
54 Parser::Parser(Module *module, unsigned char *base, unsigned length, int doDocComment) | |
55 : Lexer(module, base, 0, length, doDocComment, 0) | |
56 { | |
57 //printf("Parser::Parser()\n"); | |
58 md = NULL; | |
59 linkage = LINKd; | |
60 endloc = 0; | |
61 inBrackets = 0; | |
62 //nextToken(); // start up the scanner | |
63 } | |
64 | |
65 Array *Parser::parseModule() | |
66 { | |
67 Array *decldefs; | |
68 | |
69 // ModuleDeclation leads off | |
70 if (token.value == TOKmodule) | |
71 { | |
72 unsigned char *comment = token.blockComment; | |
73 | |
74 nextToken(); | |
75 if (token.value != TOKidentifier) | |
76 { error("Identifier expected following module"); | |
77 goto Lerr; | |
78 } | |
79 else | |
80 { | |
81 Array *a = NULL; | |
82 Identifier *id; | |
83 | |
84 id = token.ident; | |
85 while (nextToken() == TOKdot) | |
86 { | |
87 if (!a) | |
88 a = new Array(); | |
89 a->push(id); | |
90 nextToken(); | |
91 if (token.value != TOKidentifier) | |
92 { error("Identifier expected following package"); | |
93 goto Lerr; | |
94 } | |
95 id = token.ident; | |
96 } | |
97 | |
98 md = new ModuleDeclaration(a, id); | |
99 | |
100 if (token.value != TOKsemicolon) | |
101 error("';' expected following module declaration instead of %s", token.toChars()); | |
102 nextToken(); | |
103 addComment(mod, comment); | |
104 } | |
105 } | |
106 | |
107 decldefs = parseDeclDefs(0); | |
108 if (token.value != TOKeof) | |
109 { error("unrecognized declaration"); | |
110 goto Lerr; | |
111 } | |
112 return decldefs; | |
113 | |
114 Lerr: | |
115 while (token.value != TOKsemicolon && token.value != TOKeof) | |
116 nextToken(); | |
117 nextToken(); | |
118 return new Array(); | |
119 } | |
120 | |
121 Array *Parser::parseDeclDefs(int once) | |
122 { Dsymbol *s; | |
123 Array *decldefs; | |
124 Array *a; | |
125 Array *aelse; | |
126 enum PROT prot; | |
127 enum STC stc; | |
128 unsigned storageClass; | |
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 storageClass = STCundefined; | |
138 switch (token.value) | |
139 { | |
140 case TOKenum: | |
141 { /* Determine if this is a manifest constant declaration, | |
142 * or a conventional enum. | |
143 */ | |
144 Token *t = peek(&token); | |
145 if (t->value == TOKlcurly || t->value == TOKcolon) | |
146 s = parseEnum(); | |
147 else if (t->value != TOKidentifier) | |
148 goto Ldeclaration; | |
149 else | |
150 { | |
151 t = peek(t); | |
152 if (t->value == TOKlcurly || t->value == TOKcolon || | |
153 t->value == TOKsemicolon) | |
154 s = parseEnum(); | |
155 else | |
156 goto Ldeclaration; | |
157 } | |
158 break; | |
159 } | |
160 | |
161 case TOKstruct: | |
162 case TOKunion: | |
163 case TOKclass: | |
164 case TOKinterface: | |
165 s = parseAggregate(); | |
166 break; | |
167 | |
168 case TOKimport: | |
169 s = parseImport(decldefs, 0); | |
170 break; | |
171 | |
172 case TOKtemplate: | |
173 s = (Dsymbol *)parseTemplateDeclaration(); | |
174 break; | |
175 | |
176 case TOKmixin: | |
177 { Loc loc = this->loc; | |
178 if (peek(&token)->value == TOKlparen) | |
179 { // mixin(string) | |
180 nextToken(); | |
181 check(TOKlparen, "mixin"); | |
182 Expression *e = parseAssignExp(); | |
183 check(TOKrparen); | |
184 check(TOKsemicolon); | |
185 s = new CompileDeclaration(loc, e); | |
186 break; | |
187 } | |
188 s = parseMixin(); | |
189 break; | |
190 } | |
191 | |
192 CASE_BASIC_TYPES: | |
193 case TOKalias: | |
194 case TOKtypedef: | |
195 case TOKidentifier: | |
196 case TOKtypeof: | |
197 case TOKdot: | |
198 Ldeclaration: | |
199 a = parseDeclarations(STCundefined); | |
200 decldefs->append(a); | |
201 continue; | |
202 | |
203 case TOKthis: | |
204 s = parseCtor(); | |
205 break; | |
206 | |
207 case TOKassign: | |
208 s = parsePostBlit(); | |
209 break; | |
210 | |
211 case TOKtilde: | |
212 s = parseDtor(); | |
213 break; | |
214 | |
215 case TOKinvariant: | |
216 { Token *t; | |
217 t = peek(&token); | |
218 if (t->value == TOKlparen) | |
219 { | |
220 if (peek(t)->value == TOKrparen) | |
221 // invariant() forms start of class invariant | |
222 s = parseInvariant(); | |
223 else | |
224 // invariant(type) | |
225 goto Ldeclaration; | |
226 } | |
227 else | |
228 { | |
229 stc = STCinvariant; | |
230 goto Lstc; | |
231 } | |
232 break; | |
233 } | |
234 | |
235 case TOKunittest: | |
236 s = parseUnitTest(); | |
237 break; | |
238 | |
239 case TOKnew: | |
240 s = parseNew(); | |
241 break; | |
242 | |
243 case TOKdelete: | |
244 s = parseDelete(); | |
245 break; | |
246 | |
247 case TOKeof: | |
248 case TOKrcurly: | |
249 return decldefs; | |
250 | |
251 case TOKstatic: | |
252 nextToken(); | |
253 if (token.value == TOKthis) | |
254 s = parseStaticCtor(); | |
255 else if (token.value == TOKtilde) | |
256 s = parseStaticDtor(); | |
257 else if (token.value == TOKassert) | |
258 s = parseStaticAssert(); | |
259 else if (token.value == TOKif) | |
260 { condition = parseStaticIfCondition(); | |
261 a = parseBlock(); | |
262 aelse = NULL; | |
263 if (token.value == TOKelse) | |
264 { nextToken(); | |
265 aelse = parseBlock(); | |
266 } | |
267 s = new StaticIfDeclaration(condition, a, aelse); | |
268 break; | |
269 } | |
270 else if (token.value == TOKimport) | |
271 { | |
272 s = parseImport(decldefs, 1); | |
273 } | |
274 else | |
275 { stc = STCstatic; | |
276 goto Lstc2; | |
277 } | |
278 break; | |
279 | |
280 case TOKconst: | |
281 if (peek(&token)->value == TOKlparen) | |
282 goto Ldeclaration; | |
283 stc = STCconst; | |
284 goto Lstc; | |
285 | |
286 case TOKimmutable: | |
287 if (peek(&token)->value == TOKlparen) | |
288 goto Ldeclaration; | |
289 stc = STCinvariant; | |
290 goto Lstc; | |
291 | |
292 case TOKfinal: stc = STCfinal; goto Lstc; | |
293 case TOKauto: stc = STCauto; goto Lstc; | |
294 case TOKscope: stc = STCscope; goto Lstc; | |
295 case TOKoverride: stc = STCoverride; goto Lstc; | |
296 case TOKabstract: stc = STCabstract; goto Lstc; | |
297 case TOKsynchronized: stc = STCsynchronized; goto Lstc; | |
298 case TOKdeprecated: stc = STCdeprecated; goto Lstc; | |
299 case TOKnothrow: stc = STCnothrow; goto Lstc; | |
300 case TOKpure: stc = STCpure; goto Lstc; | |
301 case TOKref: stc = STCref; goto Lstc; | |
302 case TOKtls: stc = STCtls; goto Lstc; | |
303 //case TOKmanifest: stc = STCmanifest; goto Lstc; | |
304 | |
305 Lstc: | |
306 if (storageClass & stc) | |
307 error("redundant storage class %s", Token::toChars(token.value)); | |
308 { | |
309 unsigned u = storageClass | stc; | |
310 u &= STCconst | STCinvariant | STCmanifest; | |
311 if (u & (u - 1)) | |
312 error("conflicting storage class %s", Token::toChars(token.value)); | |
313 } | |
314 nextToken(); | |
315 Lstc2: | |
316 storageClass |= stc; | |
317 switch (token.value) | |
318 { | |
319 case TOKconst: | |
320 case TOKinvariant: | |
321 case TOKimmutable: | |
322 // If followed by a (, it is not a storage class | |
323 if (peek(&token)->value == TOKlparen) | |
324 break; | |
325 if (token.value == TOKconst) | |
326 stc = STCconst; | |
327 else | |
328 stc = STCinvariant; | |
329 goto Lstc; | |
330 case TOKfinal: stc = STCfinal; goto Lstc; | |
331 case TOKauto: stc = STCauto; goto Lstc; | |
332 case TOKscope: stc = STCscope; goto Lstc; | |
333 case TOKoverride: stc = STCoverride; goto Lstc; | |
334 case TOKabstract: stc = STCabstract; goto Lstc; | |
335 case TOKsynchronized: stc = STCsynchronized; goto Lstc; | |
336 case TOKdeprecated: stc = STCdeprecated; goto Lstc; | |
337 case TOKnothrow: stc = STCnothrow; goto Lstc; | |
338 case TOKpure: stc = STCpure; goto Lstc; | |
339 case TOKref: stc = STCref; goto Lstc; | |
340 case TOKtls: stc = STCtls; goto Lstc; | |
341 //case TOKmanifest: stc = STCmanifest; goto Lstc; | |
342 default: | |
343 break; | |
344 } | |
345 | |
346 /* Look for auto initializers: | |
347 * storage_class identifier = initializer; | |
348 */ | |
349 if (token.value == TOKidentifier && | |
350 peek(&token)->value == TOKassign) | |
351 { | |
352 a = parseAutoDeclarations(storageClass, comment); | |
353 decldefs->append(a); | |
354 continue; | |
355 } | |
356 | |
357 /* Look for return type inference for template functions. | |
358 */ | |
359 Token *tk; | |
360 if (token.value == TOKidentifier && | |
361 (tk = peek(&token))->value == TOKlparen && | |
362 skipParens(tk, &tk) && | |
363 peek(tk)->value == TOKlparen) | |
364 { | |
365 a = parseDeclarations(storageClass); | |
366 decldefs->append(a); | |
367 continue; | |
368 } | |
369 a = parseBlock(); | |
370 s = new StorageClassDeclaration(storageClass, a); | |
371 break; | |
372 | |
373 case TOKextern: | |
374 if (peek(&token)->value != TOKlparen) | |
375 { stc = STCextern; | |
376 goto Lstc; | |
377 } | |
378 { | |
379 enum LINK linksave = linkage; | |
380 linkage = parseLinkage(); | |
381 a = parseBlock(); | |
382 s = new LinkDeclaration(linkage, a); | |
383 linkage = linksave; | |
384 break; | |
385 } | |
386 case TOKprivate: prot = PROTprivate; goto Lprot; | |
387 case TOKpackage: prot = PROTpackage; goto Lprot; | |
388 case TOKprotected: prot = PROTprotected; goto Lprot; | |
389 case TOKpublic: prot = PROTpublic; goto Lprot; | |
390 case TOKexport: prot = PROTexport; goto Lprot; | |
391 | |
392 Lprot: | |
393 nextToken(); | |
394 switch (token.value) | |
395 { | |
396 case TOKprivate: | |
397 case TOKpackage: | |
398 case TOKprotected: | |
399 case TOKpublic: | |
400 case TOKexport: | |
401 error("redundant protection attribute"); | |
402 break; | |
403 } | |
404 a = parseBlock(); | |
405 s = new ProtDeclaration(prot, a); | |
406 break; | |
407 | |
408 case TOKalign: | |
409 { unsigned n; | |
410 | |
411 // LDC better align code locations | |
412 Loc alignloc = loc; | |
413 | |
414 s = NULL; | |
415 nextToken(); | |
416 if (token.value == TOKlparen) | |
417 { | |
418 nextToken(); | |
419 if (token.value == TOKint32v) | |
420 n = (unsigned)token.uns64value; | |
421 else | |
422 { error("integer expected, not %s", token.toChars()); | |
423 n = 1; | |
424 } | |
425 nextToken(); | |
426 check(TOKrparen); | |
427 } | |
428 else | |
429 n = global.structalign; // default | |
430 | |
431 a = parseBlock(); | |
432 s = new AlignDeclaration(alignloc, n, a); | |
433 break; | |
434 } | |
435 | |
436 case TOKpragma: | |
437 { Identifier *ident; | |
438 Expressions *args = NULL; | |
439 | |
440 nextToken(); | |
441 check(TOKlparen); | |
442 if (token.value != TOKidentifier) | |
443 { error("pragma(identifier expected"); | |
444 goto Lerror; | |
445 } | |
446 ident = token.ident; | |
447 nextToken(); | |
448 if (token.value == TOKcomma) | |
449 args = parseArguments(); // pragma(identifier, args...) | |
450 else | |
451 check(TOKrparen); // pragma(identifier) | |
452 | |
453 if (token.value == TOKsemicolon) | |
454 a = NULL; | |
455 else | |
456 a = parseBlock(); | |
457 s = new PragmaDeclaration(loc, ident, args, a); | |
458 break; | |
459 } | |
460 | |
461 case TOKdebug: | |
462 nextToken(); | |
463 if (token.value == TOKassign) | |
464 { | |
465 nextToken(); | |
466 if (token.value == TOKidentifier) | |
467 s = new DebugSymbol(loc, token.ident); | |
468 else if (token.value == TOKint32v) | |
469 s = new DebugSymbol(loc, (unsigned)token.uns64value); | |
470 else | |
471 { error("identifier or integer expected, not %s", token.toChars()); | |
472 s = NULL; | |
473 } | |
474 nextToken(); | |
475 if (token.value != TOKsemicolon) | |
476 error("semicolon expected"); | |
477 nextToken(); | |
478 break; | |
479 } | |
480 | |
481 condition = parseDebugCondition(); | |
482 goto Lcondition; | |
483 | |
484 case TOKversion: | |
485 nextToken(); | |
486 if (token.value == TOKassign) | |
487 { | |
488 nextToken(); | |
489 if (token.value == TOKidentifier) | |
490 s = new VersionSymbol(loc, token.ident); | |
491 else if (token.value == TOKint32v) | |
492 s = new VersionSymbol(loc, (unsigned)token.uns64value); | |
493 else | |
494 { error("identifier or integer expected, not %s", token.toChars()); | |
495 s = NULL; | |
496 } | |
497 nextToken(); | |
498 if (token.value != TOKsemicolon) | |
499 error("semicolon expected"); | |
500 nextToken(); | |
501 break; | |
502 } | |
503 condition = parseVersionCondition(); | |
504 goto Lcondition; | |
505 | |
506 Lcondition: | |
507 a = parseBlock(); | |
508 aelse = NULL; | |
509 if (token.value == TOKelse) | |
510 { nextToken(); | |
511 aelse = parseBlock(); | |
512 } | |
513 s = new ConditionalDeclaration(condition, a, aelse); | |
514 break; | |
515 | |
516 case TOKsemicolon: // empty declaration | |
517 nextToken(); | |
518 continue; | |
519 | |
520 default: | |
521 error("Declaration expected, not '%s'",token.toChars()); | |
522 Lerror: | |
523 while (token.value != TOKsemicolon && token.value != TOKeof) | |
524 nextToken(); | |
525 nextToken(); | |
526 s = NULL; | |
527 continue; | |
528 } | |
529 if (s) | |
530 { decldefs->push(s); | |
531 addComment(s, comment); | |
532 } | |
533 } while (!once); | |
534 return decldefs; | |
535 } | |
536 | |
537 | |
538 /******************************************** | |
539 * Parse declarations after an align, protection, or extern decl. | |
540 */ | |
541 | |
542 Array *Parser::parseBlock() | |
543 { | |
544 Array *a = NULL; | |
545 Dsymbol *s; | |
546 | |
547 //printf("parseBlock()\n"); | |
548 switch (token.value) | |
549 { | |
550 case TOKsemicolon: | |
551 error("declaration expected following attribute, not ';'"); | |
552 nextToken(); | |
553 break; | |
554 | |
555 case TOKlcurly: | |
556 nextToken(); | |
557 a = parseDeclDefs(0); | |
558 if (token.value != TOKrcurly) | |
559 { /* { */ | |
560 error("matching '}' expected, not %s", token.toChars()); | |
561 } | |
562 else | |
563 nextToken(); | |
564 break; | |
565 | |
566 case TOKcolon: | |
567 nextToken(); | |
568 #if 0 | |
569 a = NULL; | |
570 #else | |
571 a = parseDeclDefs(0); // grab declarations up to closing curly bracket | |
572 #endif | |
573 break; | |
574 | |
575 default: | |
576 a = parseDeclDefs(1); | |
577 break; | |
578 } | |
579 return a; | |
580 } | |
581 | |
582 /********************************** | |
583 * Parse a static assertion. | |
584 */ | |
585 | |
586 StaticAssert *Parser::parseStaticAssert() | |
587 { | |
588 Loc loc = this->loc; | |
589 Expression *exp; | |
590 Expression *msg = NULL; | |
591 | |
592 //printf("parseStaticAssert()\n"); | |
593 nextToken(); | |
594 check(TOKlparen); | |
595 exp = parseAssignExp(); | |
596 if (token.value == TOKcomma) | |
597 { nextToken(); | |
598 msg = parseAssignExp(); | |
599 } | |
600 check(TOKrparen); | |
601 check(TOKsemicolon); | |
602 return new StaticAssert(loc, exp, msg); | |
603 } | |
604 | |
605 /*********************************** | |
606 * Parse typeof(expression). | |
607 * Current token is on the 'typeof'. | |
608 */ | |
609 | |
610 #if DMDV2 | |
611 TypeQualified *Parser::parseTypeof() | |
612 { TypeQualified *t; | |
613 Loc loc = this->loc; | |
614 | |
615 nextToken(); | |
616 check(TOKlparen); | |
617 if (token.value == TOKreturn) // typeof(return) | |
618 { | |
619 nextToken(); | |
620 t = new TypeReturn(loc); | |
621 } | |
622 else | |
623 { Expression *exp = parseExpression(); // typeof(expression) | |
624 t = new TypeTypeof(loc, exp); | |
625 } | |
626 check(TOKrparen); | |
627 return t; | |
628 } | |
629 #endif | |
630 | |
631 /*********************************** | |
632 * Parse extern (linkage) | |
633 * The parser is on the 'extern' token. | |
634 */ | |
635 | |
636 enum LINK Parser::parseLinkage() | |
637 { | |
638 enum LINK link = LINKdefault; | |
639 nextToken(); | |
640 assert(token.value == TOKlparen); | |
641 nextToken(); | |
642 if (token.value == TOKidentifier) | |
643 { Identifier *id = token.ident; | |
644 | |
645 nextToken(); | |
646 if (id == Id::Windows) | |
647 link = LINKwindows; | |
648 else if (id == Id::Pascal) | |
649 link = LINKpascal; | |
650 else if (id == Id::D) | |
651 link = LINKd; | |
652 else if (id == Id::C) | |
653 { | |
654 link = LINKc; | |
655 if (token.value == TOKplusplus) | |
656 { link = LINKcpp; | |
657 nextToken(); | |
658 } | |
659 } | |
660 else if (id == Id::System) | |
661 { | |
662 // LDC we configure target at runtime | |
663 if (global.params.os == OSWindows) | |
664 link = LINKwindows; | |
665 else | |
666 link = LINKc; | |
667 } | |
668 else | |
669 { | |
670 error("valid linkage identifiers are D, C, C++, Pascal, Windows, System"); | |
671 link = LINKd; | |
672 } | |
673 } | |
674 else | |
675 { | |
676 link = LINKd; // default | |
677 } | |
678 check(TOKrparen); | |
679 return link; | |
680 } | |
681 | |
682 /************************************** | |
683 * Parse a debug conditional | |
684 */ | |
685 | |
686 Condition *Parser::parseDebugCondition() | |
687 { | |
688 Condition *c; | |
689 | |
690 if (token.value == TOKlparen) | |
691 { | |
692 nextToken(); | |
693 unsigned level = 1; | |
694 Identifier *id = NULL; | |
695 | |
696 if (token.value == TOKidentifier) | |
697 id = token.ident; | |
698 else if (token.value == TOKint32v) | |
699 level = (unsigned)token.uns64value; | |
700 else | |
701 error("identifier or integer expected, not %s", token.toChars()); | |
702 nextToken(); | |
703 check(TOKrparen); | |
704 c = new DebugCondition(mod, level, id); | |
705 } | |
706 else | |
707 c = new DebugCondition(mod, 1, NULL); | |
708 return c; | |
709 | |
710 } | |
711 | |
712 /************************************** | |
713 * Parse a version conditional | |
714 */ | |
715 | |
716 Condition *Parser::parseVersionCondition() | |
717 { | |
718 Condition *c; | |
719 unsigned level = 1; | |
720 Identifier *id = NULL; | |
721 | |
722 if (token.value == TOKlparen) | |
723 { | |
724 nextToken(); | |
725 if (token.value == TOKidentifier) | |
726 id = token.ident; | |
727 else if (token.value == TOKint32v) | |
728 level = (unsigned)token.uns64value; | |
729 #if DMDV2 | |
730 /* Allow: | |
731 * version (unittest) | |
732 * even though unittest is a keyword | |
733 */ | |
734 else if (token.value == TOKunittest) | |
735 id = Lexer::idPool(Token::toChars(TOKunittest)); | |
736 #endif | |
737 else | |
738 error("identifier or integer expected, not %s", token.toChars()); | |
739 nextToken(); | |
740 check(TOKrparen); | |
741 | |
742 } | |
743 else | |
744 error("(condition) expected following version"); | |
745 c = new VersionCondition(mod, level, id); | |
746 return c; | |
747 | |
748 } | |
749 | |
750 /*********************************************** | |
751 * static if (expression) | |
752 * body | |
753 * else | |
754 * body | |
755 */ | |
756 | |
757 Condition *Parser::parseStaticIfCondition() | |
758 { Expression *exp; | |
759 Condition *condition; | |
760 Array *aif; | |
761 Array *aelse; | |
762 Loc loc = this->loc; | |
763 | |
764 nextToken(); | |
765 if (token.value == TOKlparen) | |
766 { | |
767 nextToken(); | |
768 exp = parseAssignExp(); | |
769 check(TOKrparen); | |
770 } | |
771 else | |
772 { error("(expression) expected following static if"); | |
773 exp = NULL; | |
774 } | |
775 condition = new StaticIfCondition(loc, exp); | |
776 return condition; | |
777 } | |
778 | |
779 | |
780 /***************************************** | |
781 * Parse a constructor definition: | |
782 * this(arguments) { body } | |
783 * or postblit: | |
784 * this(this) { body } | |
785 * Current token is 'this'. | |
786 */ | |
787 | |
788 FuncDeclaration *Parser::parseCtor() | |
789 { | |
790 Loc loc = this->loc; | |
791 | |
792 nextToken(); | |
793 if (token.value == TOKlparen && peek(&token)->value == TOKthis) | |
794 { // this(this) { ... } | |
795 nextToken(); | |
796 nextToken(); | |
797 check(TOKrparen); | |
798 PostBlitDeclaration *f = new PostBlitDeclaration(loc, 0); | |
799 parseContracts(f); | |
800 return f; | |
801 } | |
802 int varargs; | |
803 Arguments *arguments = parseParameters(&varargs); | |
804 CtorDeclaration *f = new CtorDeclaration(loc, 0, arguments, varargs); | |
805 parseContracts(f); | |
806 return f; | |
807 } | |
808 | |
809 /***************************************** | |
810 * Parse a postblit definition: | |
811 * =this() { body } | |
812 * Current token is '='. | |
813 */ | |
814 | |
815 PostBlitDeclaration *Parser::parsePostBlit() | |
816 { | |
817 Loc loc = this->loc; | |
818 | |
819 nextToken(); | |
820 check(TOKthis); | |
821 check(TOKlparen); | |
822 check(TOKrparen); | |
823 | |
824 PostBlitDeclaration *f = new PostBlitDeclaration(loc, 0); | |
825 parseContracts(f); | |
826 return f; | |
827 } | |
828 | |
829 /***************************************** | |
830 * Parse a destructor definition: | |
831 * ~this() { body } | |
832 * Current token is '~'. | |
833 */ | |
834 | |
835 DtorDeclaration *Parser::parseDtor() | |
836 { | |
837 DtorDeclaration *f; | |
838 Loc loc = this->loc; | |
839 | |
840 nextToken(); | |
841 check(TOKthis); | |
842 check(TOKlparen); | |
843 check(TOKrparen); | |
844 | |
845 f = new DtorDeclaration(loc, 0); | |
846 parseContracts(f); | |
847 return f; | |
848 } | |
849 | |
850 /***************************************** | |
851 * Parse a static constructor definition: | |
852 * static this() { body } | |
853 * Current token is 'this'. | |
854 */ | |
855 | |
856 StaticCtorDeclaration *Parser::parseStaticCtor() | |
857 { | |
858 StaticCtorDeclaration *f; | |
859 Loc loc = this->loc; | |
860 | |
861 nextToken(); | |
862 check(TOKlparen); | |
863 check(TOKrparen); | |
864 | |
865 f = new StaticCtorDeclaration(loc, 0); | |
866 parseContracts(f); | |
867 return f; | |
868 } | |
869 | |
870 /***************************************** | |
871 * Parse a static destructor definition: | |
872 * static ~this() { body } | |
873 * Current token is '~'. | |
874 */ | |
875 | |
876 StaticDtorDeclaration *Parser::parseStaticDtor() | |
877 { | |
878 StaticDtorDeclaration *f; | |
879 Loc loc = this->loc; | |
880 | |
881 nextToken(); | |
882 check(TOKthis); | |
883 check(TOKlparen); | |
884 check(TOKrparen); | |
885 | |
886 f = new StaticDtorDeclaration(loc, 0); | |
887 parseContracts(f); | |
888 return f; | |
889 } | |
890 | |
891 /***************************************** | |
892 * Parse an invariant definition: | |
893 * invariant() { body } | |
894 * Current token is 'invariant'. | |
895 */ | |
896 | |
897 InvariantDeclaration *Parser::parseInvariant() | |
898 { | |
899 InvariantDeclaration *f; | |
900 Loc loc = this->loc; | |
901 | |
902 nextToken(); | |
903 if (token.value == TOKlparen) // optional () | |
904 { | |
905 nextToken(); | |
906 check(TOKrparen); | |
907 } | |
908 | |
909 f = new InvariantDeclaration(loc, 0); | |
910 f->fbody = parseStatement(PScurly); | |
911 return f; | |
912 } | |
913 | |
914 /***************************************** | |
915 * Parse a unittest definition: | |
916 * unittest { body } | |
917 * Current token is 'unittest'. | |
918 */ | |
919 | |
920 UnitTestDeclaration *Parser::parseUnitTest() | |
921 { | |
922 UnitTestDeclaration *f; | |
923 Statement *body; | |
924 Loc loc = this->loc; | |
925 | |
926 nextToken(); | |
927 | |
928 body = parseStatement(PScurly); | |
929 | |
930 f = new UnitTestDeclaration(loc, this->loc); | |
931 f->fbody = body; | |
932 return f; | |
933 } | |
934 | |
935 /***************************************** | |
936 * Parse a new definition: | |
937 * new(arguments) { body } | |
938 * Current token is 'new'. | |
939 */ | |
940 | |
941 NewDeclaration *Parser::parseNew() | |
942 { | |
943 NewDeclaration *f; | |
944 Arguments *arguments; | |
945 int varargs; | |
946 Loc loc = this->loc; | |
947 | |
948 nextToken(); | |
949 arguments = parseParameters(&varargs); | |
950 f = new NewDeclaration(loc, 0, arguments, varargs); | |
951 parseContracts(f); | |
952 return f; | |
953 } | |
954 | |
955 /***************************************** | |
956 * Parse a delete definition: | |
957 * delete(arguments) { body } | |
958 * Current token is 'delete'. | |
959 */ | |
960 | |
961 DeleteDeclaration *Parser::parseDelete() | |
962 { | |
963 DeleteDeclaration *f; | |
964 Arguments *arguments; | |
965 int varargs; | |
966 Loc loc = this->loc; | |
967 | |
968 nextToken(); | |
969 arguments = parseParameters(&varargs); | |
970 if (varargs) | |
971 error("... not allowed in delete function parameter list"); | |
972 f = new DeleteDeclaration(loc, 0, arguments); | |
973 parseContracts(f); | |
974 return f; | |
975 } | |
976 | |
977 /********************************************** | |
978 * Parse parameter list. | |
979 */ | |
980 | |
981 Arguments *Parser::parseParameters(int *pvarargs) | |
982 { | |
983 Arguments *arguments = new Arguments(); | |
984 int varargs = 0; | |
985 int hasdefault = 0; | |
986 | |
987 check(TOKlparen); | |
988 while (1) | |
989 { Type *tb; | |
990 Identifier *ai = NULL; | |
991 Type *at; | |
992 Argument *a; | |
993 unsigned storageClass = 0; | |
994 unsigned stc; | |
995 Expression *ae; | |
996 | |
997 for (;1; nextToken()) | |
998 { | |
999 switch (token.value) | |
1000 { | |
1001 case TOKrparen: | |
1002 break; | |
1003 | |
1004 case TOKdotdotdot: | |
1005 varargs = 1; | |
1006 nextToken(); | |
1007 break; | |
1008 | |
1009 case TOKconst: | |
1010 if (peek(&token)->value == TOKlparen) | |
1011 goto Ldefault; | |
1012 stc = STCconst; | |
1013 goto L2; | |
1014 | |
1015 case TOKinvariant: | |
1016 case TOKimmutable: | |
1017 if (peek(&token)->value == TOKlparen) | |
1018 goto Ldefault; | |
1019 stc = STCinvariant; | |
1020 goto L2; | |
1021 | |
1022 case TOKin: stc = STCin; goto L2; | |
1023 case TOKout: stc = STCout; goto L2; | |
1024 case TOKinout: | |
1025 case TOKref: stc = STCref; goto L2; | |
1026 case TOKlazy: stc = STClazy; goto L2; | |
1027 case TOKscope: stc = STCscope; goto L2; | |
1028 case TOKfinal: stc = STCfinal; goto L2; | |
1029 L2: | |
1030 if (storageClass & stc || | |
1031 (storageClass & STCin && stc & (STCconst | STCscope)) || | |
1032 (stc & STCin && storageClass & (STCconst | STCscope)) | |
1033 ) | |
1034 error("redundant storage class %s", Token::toChars(token.value)); | |
1035 storageClass |= stc; | |
1036 { | |
1037 unsigned u = storageClass & (STCconst | STCinvariant); | |
1038 if (u & (u - 1)) | |
1039 error("conflicting storage class %s", Token::toChars(token.value)); | |
1040 } | |
1041 continue; | |
1042 | |
1043 #if 0 | |
1044 case TOKstatic: stc = STCstatic; goto L2; | |
1045 case TOKauto: storageClass = STCauto; goto L4; | |
1046 case TOKalias: storageClass = STCalias; goto L4; | |
1047 L4: | |
1048 nextToken(); | |
1049 if (token.value == TOKidentifier) | |
1050 { ai = token.ident; | |
1051 nextToken(); | |
1052 } | |
1053 else | |
1054 ai = NULL; | |
1055 at = NULL; // no type | |
1056 ae = NULL; // no default argument | |
1057 if (token.value == TOKassign) // = defaultArg | |
1058 { nextToken(); | |
1059 ae = parseDefaultInitExp(); | |
1060 hasdefault = 1; | |
1061 } | |
1062 else | |
1063 { if (hasdefault) | |
1064 error("default argument expected for alias %s", | |
1065 ai ? ai->toChars() : ""); | |
1066 } | |
1067 goto L3; | |
1068 #endif | |
1069 | |
1070 default: | |
1071 Ldefault: | |
1072 stc = storageClass & (STCin | STCout | STCref | STClazy); | |
1073 if (stc & (stc - 1)) // if stc is not a power of 2 | |
1074 error("incompatible parameter storage classes"); | |
1075 if ((storageClass & (STCconst | STCout)) == (STCconst | STCout)) | |
1076 error("out cannot be const"); | |
1077 if ((storageClass & (STCinvariant | STCout)) == (STCinvariant | STCout)) | |
1078 error("out cannot be invariant"); | |
1079 if ((storageClass & STCscope) && | |
1080 (storageClass & (STCref | STCout))) | |
1081 error("scope cannot be ref or out"); | |
1082 at = parseType(&ai); | |
1083 ae = NULL; | |
1084 if (token.value == TOKassign) // = defaultArg | |
1085 { nextToken(); | |
1086 ae = parseDefaultInitExp(); | |
1087 hasdefault = 1; | |
1088 } | |
1089 else | |
1090 { if (hasdefault) | |
1091 error("default argument expected for %s", | |
1092 ai ? ai->toChars() : at->toChars()); | |
1093 } | |
1094 if (token.value == TOKdotdotdot) | |
1095 { /* This is: | |
1096 * at ai ... | |
1097 */ | |
1098 | |
1099 if (storageClass & (STCout | STCref)) | |
1100 error("variadic argument cannot be out or ref"); | |
1101 varargs = 2; | |
1102 a = new Argument(storageClass, at, ai, ae); | |
1103 arguments->push(a); | |
1104 nextToken(); | |
1105 break; | |
1106 } | |
1107 L3: | |
1108 a = new Argument(storageClass, at, ai, ae); | |
1109 arguments->push(a); | |
1110 if (token.value == TOKcomma) | |
1111 { nextToken(); | |
1112 goto L1; | |
1113 } | |
1114 break; | |
1115 } | |
1116 break; | |
1117 } | |
1118 break; | |
1119 | |
1120 L1: ; | |
1121 } | |
1122 check(TOKrparen); | |
1123 *pvarargs = varargs; | |
1124 return arguments; | |
1125 } | |
1126 | |
1127 | |
1128 /************************************* | |
1129 */ | |
1130 | |
1131 EnumDeclaration *Parser::parseEnum() | |
1132 { EnumDeclaration *e; | |
1133 Identifier *id; | |
1134 Type *memtype; | |
1135 Loc loc = this->loc; | |
1136 | |
1137 //printf("Parser::parseEnum()\n"); | |
1138 nextToken(); | |
1139 if (token.value == TOKidentifier) | |
1140 { id = token.ident; | |
1141 nextToken(); | |
1142 } | |
1143 else | |
1144 id = NULL; | |
1145 | |
1146 if (token.value == TOKcolon) | |
1147 { | |
1148 nextToken(); | |
1149 memtype = parseBasicType(); | |
1150 memtype = parseDeclarator(memtype, NULL, NULL); | |
1151 } | |
1152 else | |
1153 memtype = NULL; | |
1154 | |
1155 e = new EnumDeclaration(loc, id, memtype); | |
1156 if (token.value == TOKsemicolon && id) | |
1157 nextToken(); | |
1158 else if (token.value == TOKlcurly) | |
1159 { | |
1160 //printf("enum definition\n"); | |
1161 e->members = new Array(); | |
1162 nextToken(); | |
1163 unsigned char *comment = token.blockComment; | |
1164 while (token.value != TOKrcurly) | |
1165 { | |
1166 /* Can take the following forms: | |
1167 * 1. ident | |
1168 * 2. ident = value | |
1169 * 3. type ident = value | |
1170 */ | |
1171 | |
1172 loc = this->loc; | |
1173 | |
1174 Type *type = NULL; | |
1175 Identifier *ident; | |
1176 Token *tp = peek(&token); | |
1177 if (token.value == TOKidentifier && | |
1178 (tp->value == TOKassign || tp->value == TOKcomma || tp->value == TOKrcurly)) | |
1179 { | |
1180 ident = token.ident; | |
1181 type = NULL; | |
1182 nextToken(); | |
1183 } | |
1184 else | |
1185 { | |
1186 type = parseType(&ident, NULL); | |
1187 if (id || memtype) | |
1188 error("type only allowed if anonymous enum and no enum type"); | |
1189 } | |
1190 | |
1191 Expression *value; | |
1192 if (token.value == TOKassign) | |
1193 { | |
1194 nextToken(); | |
1195 value = parseAssignExp(); | |
1196 } | |
1197 else | |
1198 { value = NULL; | |
1199 if (type) | |
1200 error("if type, there must be an initializer"); | |
1201 } | |
1202 | |
1203 EnumMember *em = new EnumMember(loc, ident, value, type); | |
1204 e->members->push(em); | |
1205 | |
1206 if (token.value == TOKrcurly) | |
1207 ; | |
1208 else | |
1209 { addComment(em, comment); | |
1210 comment = NULL; | |
1211 check(TOKcomma); | |
1212 } | |
1213 addComment(em, comment); | |
1214 comment = token.blockComment; | |
1215 } | |
1216 nextToken(); | |
1217 } | |
1218 else | |
1219 error("enum declaration is invalid"); | |
1220 | |
1221 //printf("-parseEnum() %s\n", e->toChars()); | |
1222 return e; | |
1223 } | |
1224 | |
1225 /******************************** | |
1226 * Parse struct, union, interface, class. | |
1227 */ | |
1228 | |
1229 Dsymbol *Parser::parseAggregate() | |
1230 { AggregateDeclaration *a = NULL; | |
1231 int anon = 0; | |
1232 enum TOK tok; | |
1233 Identifier *id; | |
1234 TemplateParameters *tpl = NULL; | |
1235 Expression *constraint = NULL; | |
1236 | |
1237 //printf("Parser::parseAggregate()\n"); | |
1238 tok = token.value; | |
1239 nextToken(); | |
1240 if (token.value != TOKidentifier) | |
1241 { id = NULL; | |
1242 } | |
1243 else | |
1244 { id = token.ident; | |
1245 nextToken(); | |
1246 | |
1247 if (token.value == TOKlparen) | |
1248 { // Class template declaration. | |
1249 | |
1250 // Gather template parameter list | |
1251 tpl = parseTemplateParameterList(); | |
1252 constraint = parseConstraint(); | |
1253 } | |
1254 } | |
1255 | |
1256 Loc loc = this->loc; | |
1257 switch (tok) | |
1258 { case TOKclass: | |
1259 case TOKinterface: | |
1260 { | |
1261 if (!id) | |
1262 error("anonymous classes not allowed"); | |
1263 | |
1264 // Collect base class(es) | |
1265 BaseClasses *baseclasses = NULL; | |
1266 if (token.value == TOKcolon) | |
1267 { | |
1268 nextToken(); | |
1269 baseclasses = parseBaseClasses(); | |
1270 | |
1271 if (token.value != TOKlcurly) | |
1272 error("members expected"); | |
1273 } | |
1274 | |
1275 if (tok == TOKclass) | |
1276 a = new ClassDeclaration(loc, id, baseclasses); | |
1277 else | |
1278 a = new InterfaceDeclaration(loc, id, baseclasses); | |
1279 break; | |
1280 } | |
1281 | |
1282 case TOKstruct: | |
1283 if (id) | |
1284 a = new StructDeclaration(loc, id); | |
1285 else | |
1286 anon = 1; | |
1287 break; | |
1288 | |
1289 case TOKunion: | |
1290 if (id) | |
1291 a = new UnionDeclaration(loc, id); | |
1292 else | |
1293 anon = 2; | |
1294 break; | |
1295 | |
1296 default: | |
1297 assert(0); | |
1298 break; | |
1299 } | |
1300 if (a && token.value == TOKsemicolon) | |
1301 { nextToken(); | |
1302 } | |
1303 else if (token.value == TOKlcurly) | |
1304 { | |
1305 //printf("aggregate definition\n"); | |
1306 nextToken(); | |
1307 Array *decl = parseDeclDefs(0); | |
1308 if (token.value != TOKrcurly) | |
1309 error("} expected following member declarations in aggregate"); | |
1310 nextToken(); | |
1311 if (anon) | |
1312 { | |
1313 /* Anonymous structs/unions are more like attributes. | |
1314 */ | |
1315 return new AnonDeclaration(loc, anon - 1, decl); | |
1316 } | |
1317 else | |
1318 a->members = decl; | |
1319 } | |
1320 else | |
1321 { | |
1322 error("{ } expected following aggregate declaration"); | |
1323 a = new StructDeclaration(loc, NULL); | |
1324 } | |
1325 | |
1326 if (tpl) | |
1327 { // Wrap a template around the aggregate declaration | |
1328 | |
1329 Array *decldefs = new Array(); | |
1330 decldefs->push(a); | |
1331 TemplateDeclaration *tempdecl = | |
1332 new TemplateDeclaration(loc, id, tpl, constraint, decldefs); | |
1333 return tempdecl; | |
1334 } | |
1335 | |
1336 return a; | |
1337 } | |
1338 | |
1339 /******************************************* | |
1340 */ | |
1341 | |
1342 BaseClasses *Parser::parseBaseClasses() | |
1343 { | |
1344 BaseClasses *baseclasses = new BaseClasses(); | |
1345 | |
1346 for (; 1; nextToken()) | |
1347 { | |
1348 enum PROT protection = PROTpublic; | |
1349 switch (token.value) | |
1350 { | |
1351 case TOKprivate: | |
1352 protection = PROTprivate; | |
1353 nextToken(); | |
1354 break; | |
1355 case TOKpackage: | |
1356 protection = PROTpackage; | |
1357 nextToken(); | |
1358 break; | |
1359 case TOKprotected: | |
1360 protection = PROTprotected; | |
1361 nextToken(); | |
1362 break; | |
1363 case TOKpublic: | |
1364 protection = PROTpublic; | |
1365 nextToken(); | |
1366 break; | |
1367 } | |
1368 if (token.value == TOKidentifier) | |
1369 { | |
1370 BaseClass *b = new BaseClass(parseBasicType(), protection); | |
1371 baseclasses->push(b); | |
1372 if (token.value != TOKcomma) | |
1373 break; | |
1374 } | |
1375 else | |
1376 { | |
1377 error("base classes expected instead of %s", token.toChars()); | |
1378 return NULL; | |
1379 } | |
1380 } | |
1381 return baseclasses; | |
1382 } | |
1383 | |
1384 /************************************** | |
1385 * Parse constraint. | |
1386 * Constraint is of the form: | |
1387 * if ( ConstraintExpression ) | |
1388 */ | |
1389 | |
1390 #if DMDV2 | |
1391 Expression *Parser::parseConstraint() | |
1392 { Expression *e = NULL; | |
1393 | |
1394 if (token.value == TOKif) | |
1395 { | |
1396 nextToken(); // skip over 'if' | |
1397 check(TOKlparen); | |
1398 e = parseExpression(); | |
1399 check(TOKrparen); | |
1400 } | |
1401 return e; | |
1402 } | |
1403 #endif | |
1404 | |
1405 /************************************** | |
1406 * Parse a TemplateDeclaration. | |
1407 */ | |
1408 | |
1409 TemplateDeclaration *Parser::parseTemplateDeclaration() | |
1410 { | |
1411 TemplateDeclaration *tempdecl; | |
1412 Identifier *id; | |
1413 TemplateParameters *tpl; | |
1414 Array *decldefs; | |
1415 Expression *constraint = NULL; | |
1416 Loc loc = this->loc; | |
1417 | |
1418 nextToken(); | |
1419 if (token.value != TOKidentifier) | |
1420 { error("TemplateIdentifier expected following template"); | |
1421 goto Lerr; | |
1422 } | |
1423 id = token.ident; | |
1424 nextToken(); | |
1425 tpl = parseTemplateParameterList(); | |
1426 if (!tpl) | |
1427 goto Lerr; | |
1428 | |
1429 constraint = parseConstraint(); | |
1430 | |
1431 if (token.value != TOKlcurly) | |
1432 { error("members of template declaration expected"); | |
1433 goto Lerr; | |
1434 } | |
1435 else | |
1436 { | |
1437 nextToken(); | |
1438 decldefs = parseDeclDefs(0); | |
1439 if (token.value != TOKrcurly) | |
1440 { error("template member expected"); | |
1441 goto Lerr; | |
1442 } | |
1443 nextToken(); | |
1444 } | |
1445 | |
1446 tempdecl = new TemplateDeclaration(loc, id, tpl, constraint, decldefs); | |
1447 return tempdecl; | |
1448 | |
1449 Lerr: | |
1450 return NULL; | |
1451 } | |
1452 | |
1453 /****************************************** | |
1454 * Parse template parameter list. | |
1455 * Input: | |
1456 * flag 0: parsing "( list )" | |
1457 * 1: parsing non-empty "list )" | |
1458 */ | |
1459 | |
1460 TemplateParameters *Parser::parseTemplateParameterList(int flag) | |
1461 { | |
1462 TemplateParameters *tpl = new TemplateParameters(); | |
1463 | |
1464 if (!flag && token.value != TOKlparen) | |
1465 { error("parenthesized TemplateParameterList expected following TemplateIdentifier"); | |
1466 goto Lerr; | |
1467 } | |
1468 nextToken(); | |
1469 | |
1470 // Get array of TemplateParameters | |
1471 if (flag || token.value != TOKrparen) | |
1472 { int isvariadic = 0; | |
1473 | |
1474 while (1) | |
1475 { TemplateParameter *tp; | |
1476 Identifier *tp_ident = NULL; | |
1477 Type *tp_spectype = NULL; | |
1478 Type *tp_valtype = NULL; | |
1479 Type *tp_defaulttype = NULL; | |
1480 Expression *tp_specvalue = NULL; | |
1481 Expression *tp_defaultvalue = NULL; | |
1482 Token *t; | |
1483 | |
1484 // Get TemplateParameter | |
1485 | |
1486 // First, look ahead to see if it is a TypeParameter or a ValueParameter | |
1487 t = peek(&token); | |
1488 if (token.value == TOKalias) | |
1489 { // AliasParameter | |
1490 nextToken(); | |
1491 Type *spectype = NULL; | |
1492 if (isDeclaration(&token, 2, TOKreserved, NULL)) | |
1493 { | |
1494 spectype = parseType(&tp_ident); | |
1495 } | |
1496 else | |
1497 { | |
1498 if (token.value != TOKidentifier) | |
1499 { error("identifier expected for template alias parameter"); | |
1500 goto Lerr; | |
1501 } | |
1502 tp_ident = token.ident; | |
1503 nextToken(); | |
1504 } | |
1505 Object *spec = NULL; | |
1506 if (token.value == TOKcolon) // : Type | |
1507 { | |
1508 nextToken(); | |
1509 if (isDeclaration(&token, 0, TOKreserved, NULL)) | |
1510 spec = parseType(); | |
1511 else | |
1512 spec = parseCondExp(); | |
1513 } | |
1514 Object *def = NULL; | |
1515 if (token.value == TOKassign) // = Type | |
1516 { | |
1517 nextToken(); | |
1518 if (isDeclaration(&token, 0, TOKreserved, NULL)) | |
1519 def = parseType(); | |
1520 else | |
1521 def = parseCondExp(); | |
1522 } | |
1523 tp = new TemplateAliasParameter(loc, tp_ident, spectype, spec, def); | |
1524 } | |
1525 else if (t->value == TOKcolon || t->value == TOKassign || | |
1526 t->value == TOKcomma || t->value == TOKrparen) | |
1527 { // TypeParameter | |
1528 if (token.value != TOKidentifier) | |
1529 { error("identifier expected for template type parameter"); | |
1530 goto Lerr; | |
1531 } | |
1532 tp_ident = token.ident; | |
1533 nextToken(); | |
1534 if (token.value == TOKcolon) // : Type | |
1535 { | |
1536 nextToken(); | |
1537 tp_spectype = parseType(); | |
1538 } | |
1539 if (token.value == TOKassign) // = Type | |
1540 { | |
1541 nextToken(); | |
1542 tp_defaulttype = parseType(); | |
1543 } | |
1544 tp = new TemplateTypeParameter(loc, tp_ident, tp_spectype, tp_defaulttype); | |
1545 } | |
1546 else if (token.value == TOKidentifier && t->value == TOKdotdotdot) | |
1547 { // ident... | |
1548 if (isvariadic) | |
1549 error("variadic template parameter must be last"); | |
1550 isvariadic = 1; | |
1551 tp_ident = token.ident; | |
1552 nextToken(); | |
1553 nextToken(); | |
1554 tp = new TemplateTupleParameter(loc, tp_ident); | |
1555 } | |
1556 #if DMDV2 | |
1557 else if (token.value == TOKthis) | |
1558 { // ThisParameter | |
1559 nextToken(); | |
1560 if (token.value != TOKidentifier) | |
1561 { error("identifier expected for template this parameter"); | |
1562 goto Lerr; | |
1563 } | |
1564 tp_ident = token.ident; | |
1565 nextToken(); | |
1566 if (token.value == TOKcolon) // : Type | |
1567 { | |
1568 nextToken(); | |
1569 tp_spectype = parseType(); | |
1570 } | |
1571 if (token.value == TOKassign) // = Type | |
1572 { | |
1573 nextToken(); | |
1574 tp_defaulttype = parseType(); | |
1575 } | |
1576 tp = new TemplateThisParameter(loc, tp_ident, tp_spectype, tp_defaulttype); | |
1577 } | |
1578 #endif | |
1579 else | |
1580 { // ValueParameter | |
1581 tp_valtype = parseType(&tp_ident); | |
1582 if (!tp_ident) | |
1583 { | |
1584 error("identifier expected for template value parameter"); | |
1585 tp_ident = new Identifier("error", TOKidentifier); | |
1586 } | |
1587 if (token.value == TOKcolon) // : CondExpression | |
1588 { | |
1589 nextToken(); | |
1590 tp_specvalue = parseCondExp(); | |
1591 } | |
1592 if (token.value == TOKassign) // = CondExpression | |
1593 { | |
1594 nextToken(); | |
1595 tp_defaultvalue = parseDefaultInitExp(); | |
1596 } | |
1597 tp = new TemplateValueParameter(loc, tp_ident, tp_valtype, tp_specvalue, tp_defaultvalue); | |
1598 } | |
1599 tpl->push(tp); | |
1600 if (token.value != TOKcomma) | |
1601 break; | |
1602 nextToken(); | |
1603 } | |
1604 } | |
1605 check(TOKrparen); | |
1606 Lerr: | |
1607 return tpl; | |
1608 } | |
1609 | |
1610 /****************************************** | |
1611 * Parse template mixin. | |
1612 * mixin Foo; | |
1613 * mixin Foo!(args); | |
1614 * mixin a.b.c!(args).Foo!(args); | |
1615 * mixin Foo!(args) identifier; | |
1616 * mixin typeof(expr).identifier!(args); | |
1617 */ | |
1618 | |
1619 Dsymbol *Parser::parseMixin() | |
1620 { | |
1621 TemplateMixin *tm; | |
1622 Identifier *id; | |
1623 Type *tqual; | |
1624 Objects *tiargs; | |
1625 Array *idents; | |
1626 | |
1627 //printf("parseMixin()\n"); | |
1628 nextToken(); | |
1629 tqual = NULL; | |
1630 if (token.value == TOKdot) | |
1631 { | |
1632 id = Id::empty; | |
1633 } | |
1634 else | |
1635 { | |
1636 if (token.value == TOKtypeof) | |
1637 { | |
1638 tqual = parseTypeof(); | |
1639 check(TOKdot); | |
1640 } | |
1641 if (token.value != TOKidentifier) | |
1642 { | |
1643 error("identifier expected, not %s", token.toChars()); | |
1644 id = Id::empty; | |
1645 } | |
1646 else | |
1647 id = token.ident; | |
1648 nextToken(); | |
1649 } | |
1650 | |
1651 idents = new Array(); | |
1652 while (1) | |
1653 { | |
1654 tiargs = NULL; | |
1655 if (token.value == TOKnot) | |
1656 { | |
1657 nextToken(); | |
1658 if (token.value == TOKlparen) | |
1659 tiargs = parseTemplateArgumentList(); | |
1660 else | |
1661 tiargs = parseTemplateArgument(); | |
1662 } | |
1663 | |
1664 if (token.value != TOKdot) | |
1665 break; | |
1666 | |
1667 if (tiargs) | |
1668 { TemplateInstance *tempinst = new TemplateInstance(loc, id); | |
1669 tempinst->tiargs = tiargs; | |
1670 id = (Identifier *)tempinst; | |
1671 tiargs = NULL; | |
1672 } | |
1673 idents->push(id); | |
1674 | |
1675 nextToken(); | |
1676 if (token.value != TOKidentifier) | |
1677 { error("identifier expected following '.' instead of '%s'", token.toChars()); | |
1678 break; | |
1679 } | |
1680 id = token.ident; | |
1681 nextToken(); | |
1682 } | |
1683 idents->push(id); | |
1684 | |
1685 if (token.value == TOKidentifier) | |
1686 { | |
1687 id = token.ident; | |
1688 nextToken(); | |
1689 } | |
1690 else | |
1691 id = NULL; | |
1692 | |
1693 tm = new TemplateMixin(loc, id, tqual, idents, tiargs); | |
1694 if (token.value != TOKsemicolon) | |
1695 error("';' expected after mixin"); | |
1696 nextToken(); | |
1697 | |
1698 return tm; | |
1699 } | |
1700 | |
1701 /****************************************** | |
1702 * Parse template argument list. | |
1703 * Input: | |
1704 * current token is opening '(' | |
1705 * Output: | |
1706 * current token is one after closing ')' | |
1707 */ | |
1708 | |
1709 Objects *Parser::parseTemplateArgumentList() | |
1710 { | |
1711 //printf("Parser::parseTemplateArgumentList()\n"); | |
1712 if (token.value != TOKlparen && token.value != TOKlcurly) | |
1713 { error("!(TemplateArgumentList) expected following TemplateIdentifier"); | |
1714 return new Objects(); | |
1715 } | |
1716 return parseTemplateArgumentList2(); | |
1717 } | |
1718 | |
1719 Objects *Parser::parseTemplateArgumentList2() | |
1720 { | |
1721 Objects *tiargs = new Objects(); | |
1722 enum TOK endtok = TOKrparen; | |
1723 nextToken(); | |
1724 | |
1725 // Get TemplateArgumentList | |
1726 if (token.value != endtok) | |
1727 { | |
1728 while (1) | |
1729 { | |
1730 // See if it is an Expression or a Type | |
1731 if (isDeclaration(&token, 0, TOKreserved, NULL)) | |
1732 { // Template argument is a type | |
1733 Type *ta = parseType(); | |
1734 tiargs->push(ta); | |
1735 } | |
1736 else | |
1737 { // Template argument is an expression | |
1738 Expression *ea = parseAssignExp(); | |
1739 tiargs->push(ea); | |
1740 } | |
1741 if (token.value != TOKcomma) | |
1742 break; | |
1743 nextToken(); | |
1744 } | |
1745 } | |
1746 check(endtok, "template argument list"); | |
1747 return tiargs; | |
1748 } | |
1749 | |
1750 /***************************** | |
1751 * Parse single template argument, to support the syntax: | |
1752 * foo!arg | |
1753 * Input: | |
1754 * current token is the arg | |
1755 */ | |
1756 | |
1757 Objects *Parser::parseTemplateArgument() | |
1758 { | |
1759 //printf("parseTemplateArgument()\n"); | |
1760 Objects *tiargs = new Objects(); | |
1761 Type *ta; | |
1762 switch (token.value) | |
1763 { | |
1764 case TOKidentifier: | |
1765 ta = new TypeIdentifier(loc, token.ident); | |
1766 goto LabelX; | |
1767 | |
1768 CASE_BASIC_TYPES_X(ta): | |
1769 tiargs->push(ta); | |
1770 nextToken(); | |
1771 break; | |
1772 | |
1773 case TOKint32v: | |
1774 case TOKuns32v: | |
1775 case TOKint64v: | |
1776 case TOKuns64v: | |
1777 case TOKfloat32v: | |
1778 case TOKfloat64v: | |
1779 case TOKfloat80v: | |
1780 case TOKimaginary32v: | |
1781 case TOKimaginary64v: | |
1782 case TOKimaginary80v: | |
1783 case TOKnull: | |
1784 case TOKtrue: | |
1785 case TOKfalse: | |
1786 case TOKcharv: | |
1787 case TOKwcharv: | |
1788 case TOKdcharv: | |
1789 case TOKstring: | |
1790 case TOKfile: | |
1791 case TOKline: | |
1792 { // Template argument is an expression | |
1793 Expression *ea = parsePrimaryExp(); | |
1794 tiargs->push(ea); | |
1795 break; | |
1796 } | |
1797 | |
1798 default: | |
1799 error("template argument expected following !"); | |
1800 break; | |
1801 } | |
1802 if (token.value == TOKnot) | |
1803 error("multiple ! arguments are not allowed"); | |
1804 return tiargs; | |
1805 } | |
1806 | |
1807 Import *Parser::parseImport(Array *decldefs, int isstatic) | |
1808 { Import *s; | |
1809 Identifier *id; | |
1810 Identifier *aliasid = NULL; | |
1811 Array *a; | |
1812 Loc loc; | |
1813 | |
1814 //printf("Parser::parseImport()\n"); | |
1815 do | |
1816 { | |
1817 L1: | |
1818 nextToken(); | |
1819 if (token.value != TOKidentifier) | |
1820 { error("Identifier expected following import"); | |
1821 break; | |
1822 } | |
1823 | |
1824 loc = this->loc; | |
1825 a = NULL; | |
1826 id = token.ident; | |
1827 nextToken(); | |
1828 if (!aliasid && token.value == TOKassign) | |
1829 { | |
1830 aliasid = id; | |
1831 goto L1; | |
1832 } | |
1833 while (token.value == TOKdot) | |
1834 { | |
1835 if (!a) | |
1836 a = new Array(); | |
1837 a->push(id); | |
1838 nextToken(); | |
1839 if (token.value != TOKidentifier) | |
1840 { error("Identifier expected following package"); | |
1841 break; | |
1842 } | |
1843 id = token.ident; | |
1844 nextToken(); | |
1845 } | |
1846 | |
1847 s = new Import(loc, a, token.ident, aliasid, isstatic); | |
1848 decldefs->push(s); | |
1849 | |
1850 /* Look for | |
1851 * : alias=name, alias=name; | |
1852 * syntax. | |
1853 */ | |
1854 if (token.value == TOKcolon) | |
1855 { | |
1856 do | |
1857 { Identifier *name; | |
1858 Identifier *alias; | |
1859 | |
1860 nextToken(); | |
1861 if (token.value != TOKidentifier) | |
1862 { error("Identifier expected following :"); | |
1863 break; | |
1864 } | |
1865 alias = token.ident; | |
1866 nextToken(); | |
1867 if (token.value == TOKassign) | |
1868 { | |
1869 nextToken(); | |
1870 if (token.value != TOKidentifier) | |
1871 { error("Identifier expected following %s=", alias->toChars()); | |
1872 break; | |
1873 } | |
1874 name = token.ident; | |
1875 nextToken(); | |
1876 } | |
1877 else | |
1878 { name = alias; | |
1879 alias = NULL; | |
1880 } | |
1881 s->addAlias(name, alias); | |
1882 } while (token.value == TOKcomma); | |
1883 break; // no comma-separated imports of this form | |
1884 } | |
1885 | |
1886 aliasid = NULL; | |
1887 } while (token.value == TOKcomma); | |
1888 | |
1889 if (token.value == TOKsemicolon) | |
1890 nextToken(); | |
1891 else | |
1892 { | |
1893 error("';' expected"); | |
1894 nextToken(); | |
1895 } | |
1896 | |
1897 return NULL; | |
1898 } | |
1899 | |
1900 Type *Parser::parseType(Identifier **pident, TemplateParameters **tpl) | |
1901 { Type *t; | |
1902 | |
1903 if (token.value == TOKconst && peek(&token)->value != TOKlparen) | |
1904 { | |
1905 nextToken(); | |
1906 /* const type | |
1907 */ | |
1908 t = parseType(pident, tpl); | |
1909 t = t->makeConst(); | |
1910 return t; | |
1911 } | |
1912 else if ((token.value == TOKinvariant || token.value == TOKimmutable) && | |
1913 peek(&token)->value != TOKlparen) | |
1914 { | |
1915 nextToken(); | |
1916 /* invariant type | |
1917 */ | |
1918 t = parseType(pident, tpl); | |
1919 t = t->makeInvariant(); | |
1920 return t; | |
1921 } | |
1922 else | |
1923 t = parseBasicType(); | |
1924 t = parseDeclarator(t, pident, tpl); | |
1925 return t; | |
1926 } | |
1927 | |
1928 Type *Parser::parseBasicType() | |
1929 { Type *t; | |
1930 Identifier *id; | |
1931 TypeQualified *tid; | |
1932 | |
1933 //printf("parseBasicType()\n"); | |
1934 switch (token.value) | |
1935 { | |
1936 CASE_BASIC_TYPES_X(t): | |
1937 nextToken(); | |
1938 break; | |
1939 | |
1940 case TOKidentifier: | |
1941 id = token.ident; | |
1942 nextToken(); | |
1943 if (token.value == TOKnot) | |
1944 { // ident!(template_arguments) | |
1945 TemplateInstance *tempinst = new TemplateInstance(loc, id); | |
1946 nextToken(); | |
1947 if (token.value == TOKlparen) | |
1948 // ident!(template_arguments) | |
1949 tempinst->tiargs = parseTemplateArgumentList(); | |
1950 else | |
1951 // ident!template_argument | |
1952 tempinst->tiargs = parseTemplateArgument(); | |
1953 tid = new TypeInstance(loc, tempinst); | |
1954 goto Lident2; | |
1955 } | |
1956 Lident: | |
1957 tid = new TypeIdentifier(loc, id); | |
1958 Lident2: | |
1959 while (token.value == TOKdot) | |
1960 { nextToken(); | |
1961 if (token.value != TOKidentifier) | |
1962 { error("identifier expected following '.' instead of '%s'", token.toChars()); | |
1963 break; | |
1964 } | |
1965 id = token.ident; | |
1966 nextToken(); | |
1967 if (token.value == TOKnot) | |
1968 { | |
1969 TemplateInstance *tempinst = new TemplateInstance(loc, id); | |
1970 nextToken(); | |
1971 if (token.value == TOKlparen) | |
1972 // ident!(template_arguments) | |
1973 tempinst->tiargs = parseTemplateArgumentList(); | |
1974 else | |
1975 // ident!template_argument | |
1976 tempinst->tiargs = parseTemplateArgument(); | |
1977 tid->addIdent((Identifier *)tempinst); | |
1978 } | |
1979 else | |
1980 tid->addIdent(id); | |
1981 } | |
1982 t = tid; | |
1983 break; | |
1984 | |
1985 case TOKdot: | |
1986 // Leading . as in .foo | |
1987 id = Id::empty; | |
1988 goto Lident; | |
1989 | |
1990 case TOKtypeof: | |
1991 // typeof(expression) | |
1992 tid = parseTypeof(); | |
1993 goto Lident2; | |
1994 | |
1995 case TOKconst: | |
1996 // const(type) | |
1997 nextToken(); | |
1998 check(TOKlparen); | |
1999 t = parseType(); | |
2000 check(TOKrparen); | |
2001 t = t->makeConst(); | |
2002 break; | |
2003 | |
2004 case TOKinvariant: | |
2005 case TOKimmutable: | |
2006 // invariant(type) | |
2007 nextToken(); | |
2008 check(TOKlparen); | |
2009 t = parseType(); | |
2010 check(TOKrparen); | |
2011 t = t->makeInvariant(); | |
2012 break; | |
2013 | |
2014 default: | |
2015 error("basic type expected, not %s", token.toChars()); | |
2016 t = Type::tint32; | |
2017 break; | |
2018 } | |
2019 return t; | |
2020 } | |
2021 | |
2022 /****************************************** | |
2023 * Parse things that follow the initial type t. | |
2024 * t * | |
2025 * t [] | |
2026 * t [type] | |
2027 * t [expression] | |
2028 * t [expression .. expression] | |
2029 * t function | |
2030 * t delegate | |
2031 */ | |
2032 | |
2033 Type *Parser::parseBasicType2(Type *t) | |
2034 { | |
2035 //printf("parseBasicType2()\n"); | |
2036 while (1) | |
2037 { | |
2038 switch (token.value) | |
2039 { | |
2040 case TOKmul: | |
2041 t = new TypePointer(t); | |
2042 nextToken(); | |
2043 continue; | |
2044 | |
2045 case TOKlbracket: | |
2046 // Handle []. Make sure things like | |
2047 // int[3][1] a; | |
2048 // is (array[1] of array[3] of int) | |
2049 nextToken(); | |
2050 if (token.value == TOKrbracket) | |
2051 { | |
2052 t = new TypeDArray(t); // [] | |
2053 nextToken(); | |
2054 } | |
2055 else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
2056 { // It's an associative array declaration | |
2057 | |
2058 //printf("it's an associative array\n"); | |
2059 Type *index = parseType(); // [ type ] | |
2060 t = new TypeAArray(t, index); | |
2061 check(TOKrbracket); | |
2062 } | |
2063 else | |
2064 { | |
2065 //printf("it's type[expression]\n"); | |
2066 inBrackets++; | |
2067 Expression *e = parseExpression(); // [ expression ] | |
2068 if (token.value == TOKslice) | |
2069 { | |
2070 nextToken(); | |
2071 Expression *e2 = parseExpression(); // [ exp .. exp ] | |
2072 t = new TypeSlice(t, e, e2); | |
2073 } | |
2074 else | |
2075 t = new TypeSArray(t,e); | |
2076 inBrackets--; | |
2077 check(TOKrbracket); | |
2078 } | |
2079 continue; | |
2080 | |
2081 case TOKdelegate: | |
2082 case TOKfunction: | |
2083 { // Handle delegate declaration: | |
2084 // t delegate(parameter list) nothrow pure | |
2085 // t function(parameter list) nothrow pure | |
2086 Arguments *arguments; | |
2087 int varargs; | |
2088 bool ispure = false; | |
2089 bool isnothrow = false; | |
2090 enum TOK save = token.value; | |
2091 | |
2092 nextToken(); | |
2093 arguments = parseParameters(&varargs); | |
2094 while (1) | |
2095 { // Postfixes of 'pure' or 'nothrow' | |
2096 if (token.value == TOKpure) | |
2097 ispure = true; | |
2098 else if (token.value == TOKnothrow) | |
2099 isnothrow = true; | |
2100 else | |
2101 break; | |
2102 nextToken(); | |
2103 } | |
2104 TypeFunction *tf = new TypeFunction(arguments, t, varargs, linkage); | |
2105 tf->ispure = ispure; | |
2106 tf->isnothrow = isnothrow; | |
2107 if (save == TOKdelegate) | |
2108 t = new TypeDelegate(tf); | |
2109 else | |
2110 t = new TypePointer(tf); // pointer to function | |
2111 continue; | |
2112 } | |
2113 | |
2114 default: | |
2115 return t; | |
2116 } | |
2117 assert(0); | |
2118 } | |
2119 assert(0); | |
2120 return NULL; | |
2121 } | |
2122 | |
2123 Type *Parser::parseDeclarator(Type *t, Identifier **pident, TemplateParameters **tpl) | |
2124 { Type *ts; | |
2125 | |
2126 //printf("parseDeclarator(tpl = %p)\n", tpl); | |
2127 t = parseBasicType2(t); | |
2128 | |
2129 switch (token.value) | |
2130 { | |
2131 | |
2132 case TOKidentifier: | |
2133 if (pident) | |
2134 *pident = token.ident; | |
2135 else | |
2136 error("unexpected identifer '%s' in declarator", token.ident->toChars()); | |
2137 ts = t; | |
2138 nextToken(); | |
2139 break; | |
2140 | |
2141 case TOKlparen: | |
2142 /* Parse things with parentheses around the identifier, like: | |
2143 * int (*ident[3])[] | |
2144 * although the D style would be: | |
2145 * int[]*[3] ident | |
2146 */ | |
2147 nextToken(); | |
2148 ts = parseDeclarator(t, pident); | |
2149 check(TOKrparen); | |
2150 break; | |
2151 | |
2152 default: | |
2153 ts = t; | |
2154 break; | |
2155 } | |
2156 | |
2157 // parse DeclaratorSuffixes | |
2158 while (1) | |
2159 { | |
2160 switch (token.value) | |
2161 { | |
2162 #if CARRAYDECL | |
2163 /* Support C style array syntax: | |
2164 * int ident[] | |
2165 * as opposed to D-style: | |
2166 * int[] ident | |
2167 */ | |
2168 case TOKlbracket: | |
2169 { // This is the old C-style post [] syntax. | |
2170 TypeNext *ta; | |
2171 nextToken(); | |
2172 if (token.value == TOKrbracket) | |
2173 { // It's a dynamic array | |
2174 ta = new TypeDArray(t); // [] | |
2175 nextToken(); | |
2176 } | |
2177 else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
2178 { // It's an associative array | |
2179 | |
2180 //printf("it's an associative array\n"); | |
2181 Type *index = parseType(); // [ type ] | |
2182 check(TOKrbracket); | |
2183 ta = new TypeAArray(t, index); | |
2184 } | |
2185 else | |
2186 { | |
2187 //printf("It's a static array\n"); | |
2188 Expression *e = parseExpression(); // [ expression ] | |
2189 ta = new TypeSArray(t, e); | |
2190 check(TOKrbracket); | |
2191 } | |
2192 | |
2193 /* Insert ta into | |
2194 * ts -> ... -> t | |
2195 * so that | |
2196 * ts -> ... -> ta -> t | |
2197 */ | |
2198 Type **pt; | |
2199 for (pt = &ts; *pt != t; pt = &((TypeNext*)*pt)->next) | |
2200 ; | |
2201 *pt = ta; | |
2202 continue; | |
2203 } | |
2204 #endif | |
2205 case TOKlparen: | |
2206 { | |
2207 if (tpl) | |
2208 { | |
2209 /* Look ahead to see if this is (...)(...), | |
2210 * i.e. a function template declaration | |
2211 */ | |
2212 if (peekPastParen(&token)->value == TOKlparen) | |
2213 { | |
2214 //printf("function template declaration\n"); | |
2215 | |
2216 // Gather template parameter list | |
2217 *tpl = parseTemplateParameterList(); | |
2218 } | |
2219 } | |
2220 | |
2221 int varargs; | |
2222 Arguments *arguments = parseParameters(&varargs); | |
2223 Type *tf = new TypeFunction(arguments, t, varargs, linkage); | |
2224 | |
2225 /* Parse const/invariant/nothrow/pure postfix | |
2226 */ | |
2227 while (1) | |
2228 { | |
2229 switch (token.value) | |
2230 { | |
2231 case TOKconst: | |
2232 tf = tf->makeConst(); | |
2233 nextToken(); | |
2234 continue; | |
2235 | |
2236 case TOKinvariant: | |
2237 case TOKimmutable: | |
2238 tf = tf->makeInvariant(); | |
2239 nextToken(); | |
2240 continue; | |
2241 | |
2242 case TOKnothrow: | |
2243 ((TypeFunction *)tf)->isnothrow = 1; | |
2244 nextToken(); | |
2245 continue; | |
2246 | |
2247 case TOKpure: | |
2248 ((TypeFunction *)tf)->ispure = 1; | |
2249 nextToken(); | |
2250 continue; | |
2251 } | |
2252 break; | |
2253 } | |
2254 | |
2255 /* Insert tf into | |
2256 * ts -> ... -> t | |
2257 * so that | |
2258 * ts -> ... -> tf -> t | |
2259 */ | |
2260 Type **pt; | |
2261 for (pt = &ts; *pt != t; pt = &((TypeNext*)*pt)->next) | |
2262 ; | |
2263 *pt = tf; | |
2264 break; | |
2265 } | |
2266 } | |
2267 break; | |
2268 } | |
2269 | |
2270 return ts; | |
2271 } | |
2272 | |
2273 /********************************** | |
2274 * Parse Declarations. | |
2275 * These can be: | |
2276 * 1. declarations at global/class level | |
2277 * 2. declarations at statement level | |
2278 * Return array of Declaration *'s. | |
2279 */ | |
2280 | |
2281 Array *Parser::parseDeclarations(unsigned storage_class) | |
2282 { | |
2283 enum STC stc; | |
2284 Type *ts; | |
2285 Type *t; | |
2286 Type *tfirst; | |
2287 Identifier *ident; | |
2288 Array *a; | |
2289 enum TOK tok = TOKreserved; | |
2290 unsigned char *comment = token.blockComment; | |
2291 enum LINK link = linkage; | |
2292 | |
2293 //printf("parseDeclarations() %s\n", token.toChars()); | |
2294 if (storage_class) | |
2295 { ts = NULL; // infer type | |
2296 goto L2; | |
2297 } | |
2298 | |
2299 switch (token.value) | |
2300 { | |
2301 case TOKtypedef: | |
2302 case TOKalias: | |
2303 tok = token.value; | |
2304 nextToken(); | |
2305 break; | |
2306 } | |
2307 | |
2308 storage_class = STCundefined; | |
2309 while (1) | |
2310 { | |
2311 switch (token.value) | |
2312 { | |
2313 case TOKconst: | |
2314 if (peek(&token)->value == TOKlparen) | |
2315 break; // const as type constructor | |
2316 stc = STCconst; // const as storage class | |
2317 goto L1; | |
2318 | |
2319 case TOKinvariant: | |
2320 case TOKimmutable: | |
2321 if (peek(&token)->value == TOKlparen) | |
2322 break; | |
2323 stc = STCinvariant; | |
2324 goto L1; | |
2325 | |
2326 case TOKshared: | |
2327 if (peek(&token)->value == TOKlparen) | |
2328 break; | |
2329 stc = STCshared; | |
2330 goto L1; | |
2331 | |
2332 case TOKstatic: stc = STCstatic; goto L1; | |
2333 case TOKfinal: stc = STCfinal; goto L1; | |
2334 case TOKauto: stc = STCauto; goto L1; | |
2335 case TOKscope: stc = STCscope; goto L1; | |
2336 case TOKoverride: stc = STCoverride; goto L1; | |
2337 case TOKabstract: stc = STCabstract; goto L1; | |
2338 case TOKsynchronized: stc = STCsynchronized; goto L1; | |
2339 case TOKdeprecated: stc = STCdeprecated; goto L1; | |
2340 case TOKnothrow: stc = STCnothrow; goto L1; | |
2341 case TOKpure: stc = STCpure; goto L1; | |
2342 case TOKref: stc = STCref; goto L1; | |
2343 case TOKtls: stc = STCtls; goto L1; | |
2344 case TOKenum: stc = STCmanifest; goto L1; | |
2345 L1: | |
2346 if (storage_class & stc) | |
2347 error("redundant storage class '%s'", token.toChars()); | |
2348 storage_class = (STC) (storage_class | stc); | |
2349 { | |
2350 unsigned u = storage_class; | |
2351 u &= STCconst | STCinvariant | STCmanifest; | |
2352 if (u & (u - 1)) | |
2353 error("conflicting storage class %s", Token::toChars(token.value)); | |
2354 } | |
2355 nextToken(); | |
2356 continue; | |
2357 | |
2358 case TOKextern: | |
2359 if (peek(&token)->value != TOKlparen) | |
2360 { stc = STCextern; | |
2361 goto L1; | |
2362 } | |
2363 | |
2364 link = parseLinkage(); | |
2365 continue; | |
2366 | |
2367 default: | |
2368 break; | |
2369 } | |
2370 break; | |
2371 } | |
2372 | |
2373 /* Look for auto initializers: | |
2374 * storage_class identifier = initializer; | |
2375 */ | |
2376 if (storage_class && | |
2377 token.value == TOKidentifier && | |
2378 peek(&token)->value == TOKassign) | |
2379 { | |
2380 return parseAutoDeclarations(storage_class, comment); | |
2381 } | |
2382 | |
2383 if (token.value == TOKclass) | |
2384 { | |
2385 AggregateDeclaration *s = (AggregateDeclaration *)parseAggregate(); | |
2386 s->storage_class |= storage_class; | |
2387 a = new Array(); | |
2388 a->push(s); | |
2389 addComment(s, comment); | |
2390 return a; | |
2391 } | |
2392 | |
2393 /* Look for return type inference for template functions. | |
2394 */ | |
2395 { | |
2396 Token *tk; | |
2397 if (storage_class && | |
2398 token.value == TOKidentifier && | |
2399 (tk = peek(&token))->value == TOKlparen && | |
2400 skipParens(tk, &tk) && | |
2401 peek(tk)->value == TOKlparen) | |
2402 { | |
2403 ts = NULL; | |
2404 } | |
2405 else | |
2406 { | |
2407 ts = parseBasicType(); | |
2408 ts = parseBasicType2(ts); | |
2409 } | |
2410 } | |
2411 | |
2412 L2: | |
2413 tfirst = NULL; | |
2414 a = new Array(); | |
2415 | |
2416 while (1) | |
2417 { | |
2418 Loc loc = this->loc; | |
2419 TemplateParameters *tpl = NULL; | |
2420 | |
2421 ident = NULL; | |
2422 t = parseDeclarator(ts, &ident, &tpl); | |
2423 assert(t); | |
2424 if (!tfirst) | |
2425 tfirst = t; | |
2426 else if (t != tfirst) | |
2427 error("multiple declarations must have the same type, not %s and %s", | |
2428 tfirst->toChars(), t->toChars()); | |
2429 if (!ident) | |
2430 error("no identifier for declarator %s", t->toChars()); | |
2431 | |
2432 if (tok == TOKtypedef || tok == TOKalias) | |
2433 { Declaration *v; | |
2434 Initializer *init = NULL; | |
2435 | |
2436 if (token.value == TOKassign) | |
2437 { | |
2438 nextToken(); | |
2439 init = parseInitializer(); | |
2440 } | |
2441 if (tok == TOKtypedef) | |
2442 v = new TypedefDeclaration(loc, ident, t, init); | |
2443 else | |
2444 { if (init) | |
2445 error("alias cannot have initializer"); | |
2446 v = new AliasDeclaration(loc, ident, t); | |
2447 } | |
2448 v->storage_class = storage_class; | |
2449 if (link == linkage) | |
2450 a->push(v); | |
2451 else | |
2452 { | |
2453 Array *ax = new Array(); | |
2454 ax->push(v); | |
2455 Dsymbol *s = new LinkDeclaration(link, ax); | |
2456 a->push(s); | |
2457 } | |
2458 switch (token.value) | |
2459 { case TOKsemicolon: | |
2460 nextToken(); | |
2461 addComment(v, comment); | |
2462 break; | |
2463 | |
2464 case TOKcomma: | |
2465 nextToken(); | |
2466 addComment(v, comment); | |
2467 continue; | |
2468 | |
2469 default: | |
2470 error("semicolon expected to close %s declaration", Token::toChars(tok)); | |
2471 break; | |
2472 } | |
2473 } | |
2474 else if (t->ty == Tfunction) | |
2475 { | |
2476 TypeFunction *tf = (TypeFunction *)t; | |
2477 Expression *constraint = NULL; | |
2478 #if 0 | |
2479 if (Argument::isTPL(tf->parameters)) | |
2480 { | |
2481 if (!tpl) | |
2482 tpl = new TemplateParameters(); | |
2483 } | |
2484 #endif | |
2485 FuncDeclaration *f = | |
2486 new FuncDeclaration(loc, 0, ident, (enum STC)storage_class, t); | |
2487 addComment(f, comment); | |
2488 if (tpl) | |
2489 constraint = parseConstraint(); | |
2490 parseContracts(f); | |
2491 addComment(f, NULL); | |
2492 Dsymbol *s; | |
2493 if (link == linkage) | |
2494 { | |
2495 s = f; | |
2496 } | |
2497 else | |
2498 { | |
2499 Array *ax = new Array(); | |
2500 ax->push(f); | |
2501 s = new LinkDeclaration(link, ax); | |
2502 } | |
2503 /* A template parameter list means it's a function template | |
2504 */ | |
2505 if (tpl) | |
2506 { | |
2507 // Wrap a template around the function declaration | |
2508 Array *decldefs = new Array(); | |
2509 decldefs->push(s); | |
2510 TemplateDeclaration *tempdecl = | |
2511 new TemplateDeclaration(loc, s->ident, tpl, constraint, decldefs); | |
2512 s = tempdecl; | |
2513 } | |
2514 addComment(s, comment); | |
2515 a->push(s); | |
2516 } | |
2517 else | |
2518 { | |
2519 Initializer *init = NULL; | |
2520 if (token.value == TOKassign) | |
2521 { | |
2522 nextToken(); | |
2523 init = parseInitializer(); | |
2524 } | |
2525 | |
2526 VarDeclaration *v = new VarDeclaration(loc, t, ident, init); | |
2527 v->storage_class = storage_class; | |
2528 if (link == linkage) | |
2529 a->push(v); | |
2530 else | |
2531 { | |
2532 Array *ax = new Array(); | |
2533 ax->push(v); | |
2534 Dsymbol *s = new LinkDeclaration(link, ax); | |
2535 a->push(s); | |
2536 } | |
2537 switch (token.value) | |
2538 { case TOKsemicolon: | |
2539 nextToken(); | |
2540 addComment(v, comment); | |
2541 break; | |
2542 | |
2543 case TOKcomma: | |
2544 nextToken(); | |
2545 addComment(v, comment); | |
2546 continue; | |
2547 | |
2548 default: | |
2549 error("semicolon expected, not '%s'", token.toChars()); | |
2550 break; | |
2551 } | |
2552 } | |
2553 break; | |
2554 } | |
2555 return a; | |
2556 } | |
2557 | |
2558 /***************************************** | |
2559 * Parse auto declarations of the form: | |
2560 * storageClass ident = init, ident = init, ... ; | |
2561 * and return the array of them. | |
2562 * Starts with token on the first ident. | |
2563 * Ends with scanner past closing ';' | |
2564 */ | |
2565 | |
2566 #if DMDV2 | |
2567 Array *Parser::parseAutoDeclarations(unsigned storageClass, unsigned char *comment) | |
2568 { | |
2569 Array *a = new Array; | |
2570 | |
2571 while (1) | |
2572 { | |
2573 Identifier *ident = token.ident; | |
2574 nextToken(); // skip over ident | |
2575 assert(token.value == TOKassign); | |
2576 nextToken(); // skip over '=' | |
2577 Initializer *init = parseInitializer(); | |
2578 VarDeclaration *v = new VarDeclaration(loc, NULL, ident, init); | |
2579 v->storage_class = storageClass; | |
2580 a->push(v); | |
2581 if (token.value == TOKsemicolon) | |
2582 { | |
2583 nextToken(); | |
2584 addComment(v, comment); | |
2585 } | |
2586 else if (token.value == TOKcomma) | |
2587 { | |
2588 nextToken(); | |
2589 if (token.value == TOKidentifier && | |
2590 peek(&token)->value == TOKassign) | |
2591 { | |
2592 addComment(v, comment); | |
2593 continue; | |
2594 } | |
2595 else | |
2596 error("Identifier expected following comma"); | |
2597 } | |
2598 else | |
2599 error("semicolon expected following auto declaration, not '%s'", token.toChars()); | |
2600 break; | |
2601 } | |
2602 return a; | |
2603 } | |
2604 #endif | |
2605 | |
2606 /***************************************** | |
2607 * Parse contracts following function declaration. | |
2608 */ | |
2609 | |
2610 void Parser::parseContracts(FuncDeclaration *f) | |
2611 { | |
2612 Type *tb; | |
2613 enum LINK linksave = linkage; | |
2614 | |
2615 // The following is irrelevant, as it is overridden by sc->linkage in | |
2616 // TypeFunction::semantic | |
2617 linkage = LINKd; // nested functions have D linkage | |
2618 L1: | |
2619 switch (token.value) | |
2620 { | |
2621 case TOKlcurly: | |
2622 if (f->frequire || f->fensure) | |
2623 error("missing body { ... } after in or out"); | |
2624 f->fbody = parseStatement(PSsemi); | |
2625 f->endloc = endloc; | |
2626 break; | |
2627 | |
2628 case TOKbody: | |
2629 nextToken(); | |
2630 f->fbody = parseStatement(PScurly); | |
2631 f->endloc = endloc; | |
2632 break; | |
2633 | |
2634 case TOKsemicolon: | |
2635 if (f->frequire || f->fensure) | |
2636 error("missing body { ... } after in or out"); | |
2637 nextToken(); | |
2638 break; | |
2639 | |
2640 #if 0 // Do we want this for function declarations, so we can do: | |
2641 // int x, y, foo(), z; | |
2642 case TOKcomma: | |
2643 nextToken(); | |
2644 continue; | |
2645 #endif | |
2646 | |
2647 #if 0 // Dumped feature | |
2648 case TOKthrow: | |
2649 if (!f->fthrows) | |
2650 f->fthrows = new Array(); | |
2651 nextToken(); | |
2652 check(TOKlparen); | |
2653 while (1) | |
2654 { | |
2655 tb = parseBasicType(); | |
2656 f->fthrows->push(tb); | |
2657 if (token.value == TOKcomma) | |
2658 { nextToken(); | |
2659 continue; | |
2660 } | |
2661 break; | |
2662 } | |
2663 check(TOKrparen); | |
2664 goto L1; | |
2665 #endif | |
2666 | |
2667 case TOKin: | |
2668 nextToken(); | |
2669 if (f->frequire) | |
2670 error("redundant 'in' statement"); | |
2671 f->frequire = parseStatement(PScurly | PSscope); | |
2672 goto L1; | |
2673 | |
2674 case TOKout: | |
2675 // parse: out (identifier) { statement } | |
2676 nextToken(); | |
2677 if (token.value != TOKlcurly) | |
2678 { | |
2679 check(TOKlparen); | |
2680 if (token.value != TOKidentifier) | |
2681 error("(identifier) following 'out' expected, not %s", token.toChars()); | |
2682 f->outId = token.ident; | |
2683 nextToken(); | |
2684 check(TOKrparen); | |
2685 } | |
2686 if (f->fensure) | |
2687 error("redundant 'out' statement"); | |
2688 f->fensure = parseStatement(PScurly | PSscope); | |
2689 goto L1; | |
2690 | |
2691 default: | |
2692 error("semicolon expected following function declaration"); | |
2693 break; | |
2694 } | |
2695 linkage = linksave; | |
2696 } | |
2697 | |
2698 /***************************************** | |
2699 * Parse initializer for variable declaration. | |
2700 */ | |
2701 | |
2702 Initializer *Parser::parseInitializer() | |
2703 { | |
2704 StructInitializer *is; | |
2705 ArrayInitializer *ia; | |
2706 ExpInitializer *ie; | |
2707 Expression *e; | |
2708 Identifier *id; | |
2709 Initializer *value; | |
2710 int comma; | |
2711 Loc loc = this->loc; | |
2712 Token *t; | |
2713 int braces; | |
2714 int brackets; | |
2715 | |
2716 switch (token.value) | |
2717 { | |
2718 case TOKlcurly: | |
2719 /* Scan ahead to see if it is a struct initializer or | |
2720 * a function literal. | |
2721 * If it contains a ';', it is a function literal. | |
2722 * Treat { } as a struct initializer. | |
2723 */ | |
2724 braces = 1; | |
2725 for (t = peek(&token); 1; t = peek(t)) | |
2726 { | |
2727 switch (t->value) | |
2728 { | |
2729 case TOKsemicolon: | |
2730 case TOKreturn: | |
2731 goto Lexpression; | |
2732 | |
2733 case TOKlcurly: | |
2734 braces++; | |
2735 continue; | |
2736 | |
2737 case TOKrcurly: | |
2738 if (--braces == 0) | |
2739 break; | |
2740 continue; | |
2741 | |
2742 case TOKeof: | |
2743 break; | |
2744 | |
2745 default: | |
2746 continue; | |
2747 } | |
2748 break; | |
2749 } | |
2750 | |
2751 is = new StructInitializer(loc); | |
2752 nextToken(); | |
2753 comma = 0; | |
2754 while (1) | |
2755 { | |
2756 switch (token.value) | |
2757 { | |
2758 case TOKidentifier: | |
2759 if (comma == 1) | |
2760 error("comma expected separating field initializers"); | |
2761 t = peek(&token); | |
2762 if (t->value == TOKcolon) | |
2763 { | |
2764 id = token.ident; | |
2765 nextToken(); | |
2766 nextToken(); // skip over ':' | |
2767 } | |
2768 else | |
2769 { id = NULL; | |
2770 } | |
2771 value = parseInitializer(); | |
2772 is->addInit(id, value); | |
2773 comma = 1; | |
2774 continue; | |
2775 | |
2776 case TOKcomma: | |
2777 nextToken(); | |
2778 comma = 2; | |
2779 continue; | |
2780 | |
2781 case TOKrcurly: // allow trailing comma's | |
2782 nextToken(); | |
2783 break; | |
2784 | |
2785 case TOKeof: | |
2786 error("found EOF instead of initializer"); | |
2787 break; | |
2788 | |
2789 default: | |
2790 value = parseInitializer(); | |
2791 is->addInit(NULL, value); | |
2792 comma = 1; | |
2793 continue; | |
2794 //error("found '%s' instead of field initializer", token.toChars()); | |
2795 //break; | |
2796 } | |
2797 break; | |
2798 } | |
2799 return is; | |
2800 | |
2801 case TOKlbracket: | |
2802 /* Scan ahead to see if it is an array initializer or | |
2803 * an expression. | |
2804 * If it ends with a ';' ',' or '}', it is an array initializer. | |
2805 */ | |
2806 brackets = 1; | |
2807 for (t = peek(&token); 1; t = peek(t)) | |
2808 { | |
2809 switch (t->value) | |
2810 { | |
2811 case TOKlbracket: | |
2812 brackets++; | |
2813 continue; | |
2814 | |
2815 case TOKrbracket: | |
2816 if (--brackets == 0) | |
2817 { t = peek(t); | |
2818 if (t->value != TOKsemicolon && | |
2819 t->value != TOKcomma && | |
2820 t->value != TOKrcurly) | |
2821 goto Lexpression; | |
2822 break; | |
2823 } | |
2824 continue; | |
2825 | |
2826 case TOKeof: | |
2827 break; | |
2828 | |
2829 default: | |
2830 continue; | |
2831 } | |
2832 break; | |
2833 } | |
2834 | |
2835 ia = new ArrayInitializer(loc); | |
2836 nextToken(); | |
2837 comma = 0; | |
2838 while (1) | |
2839 { | |
2840 switch (token.value) | |
2841 { | |
2842 default: | |
2843 if (comma == 1) | |
2844 { error("comma expected separating array initializers, not %s", token.toChars()); | |
2845 nextToken(); | |
2846 break; | |
2847 } | |
2848 e = parseAssignExp(); | |
2849 if (!e) | |
2850 break; | |
2851 if (token.value == TOKcolon) | |
2852 { | |
2853 nextToken(); | |
2854 value = parseInitializer(); | |
2855 } | |
2856 else | |
2857 { value = new ExpInitializer(e->loc, e); | |
2858 e = NULL; | |
2859 } | |
2860 ia->addInit(e, value); | |
2861 comma = 1; | |
2862 continue; | |
2863 | |
2864 case TOKlcurly: | |
2865 case TOKlbracket: | |
2866 if (comma == 1) | |
2867 error("comma expected separating array initializers, not %s", token.toChars()); | |
2868 value = parseInitializer(); | |
2869 ia->addInit(NULL, value); | |
2870 comma = 1; | |
2871 continue; | |
2872 | |
2873 case TOKcomma: | |
2874 nextToken(); | |
2875 comma = 2; | |
2876 continue; | |
2877 | |
2878 case TOKrbracket: // allow trailing comma's | |
2879 nextToken(); | |
2880 break; | |
2881 | |
2882 case TOKeof: | |
2883 error("found '%s' instead of array initializer", token.toChars()); | |
2884 break; | |
2885 } | |
2886 break; | |
2887 } | |
2888 return ia; | |
2889 | |
2890 case TOKvoid: | |
2891 t = peek(&token); | |
2892 if (t->value == TOKsemicolon || t->value == TOKcomma) | |
2893 { | |
2894 nextToken(); | |
2895 return new VoidInitializer(loc); | |
2896 } | |
2897 goto Lexpression; | |
2898 | |
2899 default: | |
2900 Lexpression: | |
2901 e = parseAssignExp(); | |
2902 ie = new ExpInitializer(loc, e); | |
2903 return ie; | |
2904 } | |
2905 } | |
2906 | |
2907 /***************************************** | |
2908 * Parses default argument initializer expression that is an assign expression, | |
2909 * with special handling for __FILE__ and __LINE__. | |
2910 */ | |
2911 | |
2912 #if DMDV2 | |
2913 Expression *Parser::parseDefaultInitExp() | |
2914 { | |
2915 if (token.value == TOKfile || | |
2916 token.value == TOKline) | |
2917 { | |
2918 Token *t = peek(&token); | |
2919 if (t->value == TOKcomma || t->value == TOKrparen) | |
2920 { Expression *e; | |
2921 | |
2922 if (token.value == TOKfile) | |
2923 e = new FileInitExp(loc); | |
2924 else | |
2925 e = new LineInitExp(loc); | |
2926 nextToken(); | |
2927 return e; | |
2928 } | |
2929 } | |
2930 | |
2931 Expression *e = parseAssignExp(); | |
2932 return e; | |
2933 } | |
2934 #endif | |
2935 | |
2936 /***************************************** | |
2937 * Input: | |
2938 * flags PSxxxx | |
2939 */ | |
2940 | |
2941 Statement *Parser::parseStatement(int flags) | |
2942 { Statement *s; | |
2943 Token *t; | |
2944 Condition *condition; | |
2945 Statement *ifbody; | |
2946 Statement *elsebody; | |
2947 Loc loc = this->loc; | |
2948 | |
2949 //printf("parseStatement()\n"); | |
2950 | |
2951 if (flags & PScurly && token.value != TOKlcurly) | |
2952 error("statement expected to be { }, not %s", token.toChars()); | |
2953 | |
2954 switch (token.value) | |
2955 { | |
2956 case TOKidentifier: | |
2957 /* A leading identifier can be a declaration, label, or expression. | |
2958 * The easiest case to check first is label: | |
2959 */ | |
2960 t = peek(&token); | |
2961 if (t->value == TOKcolon) | |
2962 { // It's a label | |
2963 | |
2964 Identifier *ident = token.ident; | |
2965 nextToken(); | |
2966 nextToken(); | |
2967 s = parseStatement(PSsemi); | |
2968 s = new LabelStatement(loc, ident, s); | |
2969 break; | |
2970 } | |
2971 // fallthrough to TOKdot | |
2972 case TOKdot: | |
2973 case TOKtypeof: | |
2974 if (isDeclaration(&token, 2, TOKreserved, NULL)) | |
2975 goto Ldeclaration; | |
2976 else | |
2977 goto Lexp; | |
2978 break; | |
2979 | |
2980 case TOKassert: | |
2981 case TOKthis: | |
2982 case TOKsuper: | |
2983 case TOKint32v: | |
2984 case TOKuns32v: | |
2985 case TOKint64v: | |
2986 case TOKuns64v: | |
2987 case TOKfloat32v: | |
2988 case TOKfloat64v: | |
2989 case TOKfloat80v: | |
2990 case TOKimaginary32v: | |
2991 case TOKimaginary64v: | |
2992 case TOKimaginary80v: | |
2993 case TOKcharv: | |
2994 case TOKwcharv: | |
2995 case TOKdcharv: | |
2996 case TOKnull: | |
2997 case TOKtrue: | |
2998 case TOKfalse: | |
2999 case TOKstring: | |
3000 case TOKlparen: | |
3001 case TOKcast: | |
3002 case TOKmul: | |
3003 case TOKmin: | |
3004 case TOKadd: | |
3005 case TOKplusplus: | |
3006 case TOKminusminus: | |
3007 case TOKnew: | |
3008 case TOKdelete: | |
3009 case TOKdelegate: | |
3010 case TOKfunction: | |
3011 case TOKtypeid: | |
3012 case TOKis: | |
3013 case TOKlbracket: | |
3014 #if DMDV2 | |
3015 case TOKtraits: | |
3016 case TOKfile: | |
3017 case TOKline: | |
3018 #endif | |
3019 Lexp: | |
3020 { Expression *exp; | |
3021 | |
3022 exp = parseExpression(); | |
3023 check(TOKsemicolon, "statement"); | |
3024 s = new ExpStatement(loc, exp); | |
3025 break; | |
3026 } | |
3027 | |
3028 case TOKstatic: | |
3029 { // Look ahead to see if it's static assert() or static if() | |
3030 Token *t; | |
3031 | |
3032 t = peek(&token); | |
3033 if (t->value == TOKassert) | |
3034 { | |
3035 nextToken(); | |
3036 s = new StaticAssertStatement(parseStaticAssert()); | |
3037 break; | |
3038 } | |
3039 if (t->value == TOKif) | |
3040 { | |
3041 nextToken(); | |
3042 condition = parseStaticIfCondition(); | |
3043 goto Lcondition; | |
3044 } | |
3045 goto Ldeclaration; | |
3046 } | |
3047 | |
3048 CASE_BASIC_TYPES: | |
3049 case TOKtypedef: | |
3050 case TOKalias: | |
3051 case TOKconst: | |
3052 case TOKauto: | |
3053 case TOKextern: | |
3054 case TOKfinal: | |
3055 case TOKinvariant: | |
3056 case TOKimmutable: | |
3057 // case TOKtypeof: | |
3058 Ldeclaration: | |
3059 { Array *a; | |
3060 | |
3061 a = parseDeclarations(STCundefined); | |
3062 if (a->dim > 1) | |
3063 { | |
3064 Statements *as = new Statements(); | |
3065 as->reserve(a->dim); | |
3066 for (int i = 0; i < a->dim; i++) | |
3067 { | |
3068 Dsymbol *d = (Dsymbol *)a->data[i]; | |
3069 s = new DeclarationStatement(loc, d); | |
3070 as->push(s); | |
3071 } | |
3072 s = new CompoundStatement(loc, as); | |
3073 } | |
3074 else if (a->dim == 1) | |
3075 { | |
3076 Dsymbol *d = (Dsymbol *)a->data[0]; | |
3077 s = new DeclarationStatement(loc, d); | |
3078 } | |
3079 else | |
3080 assert(0); | |
3081 if (flags & PSscope) | |
3082 s = new ScopeStatement(loc, s); | |
3083 break; | |
3084 } | |
3085 | |
3086 case TOKstruct: | |
3087 case TOKunion: | |
3088 case TOKclass: | |
3089 case TOKinterface: | |
3090 { Dsymbol *d; | |
3091 | |
3092 d = parseAggregate(); | |
3093 s = new DeclarationStatement(loc, d); | |
3094 break; | |
3095 } | |
3096 | |
3097 case TOKenum: | |
3098 { /* Determine if this is a manifest constant declaration, | |
3099 * or a conventional enum. | |
3100 */ | |
3101 Dsymbol *d; | |
3102 Token *t = peek(&token); | |
3103 if (t->value == TOKlcurly || t->value == TOKcolon) | |
3104 d = parseEnum(); | |
3105 else if (t->value != TOKidentifier) | |
3106 goto Ldeclaration; | |
3107 else | |
3108 { | |
3109 t = peek(t); | |
3110 if (t->value == TOKlcurly || t->value == TOKcolon || | |
3111 t->value == TOKsemicolon) | |
3112 d = parseEnum(); | |
3113 else | |
3114 goto Ldeclaration; | |
3115 } | |
3116 s = new DeclarationStatement(loc, d); | |
3117 break; | |
3118 } | |
3119 | |
3120 case TOKmixin: | |
3121 { t = peek(&token); | |
3122 if (t->value == TOKlparen) | |
3123 { // mixin(string) | |
3124 nextToken(); | |
3125 check(TOKlparen, "mixin"); | |
3126 Expression *e = parseAssignExp(); | |
3127 check(TOKrparen); | |
3128 check(TOKsemicolon); | |
3129 s = new CompileStatement(loc, e); | |
3130 break; | |
3131 } | |
3132 Dsymbol *d = parseMixin(); | |
3133 s = new DeclarationStatement(loc, d); | |
3134 break; | |
3135 } | |
3136 | |
3137 case TOKlcurly: | |
3138 { Statements *statements; | |
3139 | |
3140 nextToken(); | |
3141 statements = new Statements(); | |
3142 while (token.value != TOKrcurly) | |
3143 { | |
3144 statements->push(parseStatement(PSsemi | PScurlyscope)); | |
3145 } | |
3146 endloc = this->loc; | |
3147 s = new CompoundStatement(loc, statements); | |
3148 if (flags & (PSscope | PScurlyscope)) | |
3149 s = new ScopeStatement(loc, s); | |
3150 nextToken(); | |
3151 break; | |
3152 } | |
3153 | |
3154 case TOKwhile: | |
3155 { Expression *condition; | |
3156 Statement *body; | |
3157 | |
3158 nextToken(); | |
3159 check(TOKlparen); | |
3160 condition = parseExpression(); | |
3161 check(TOKrparen); | |
3162 body = parseStatement(PSscope); | |
3163 s = new WhileStatement(loc, condition, body); | |
3164 break; | |
3165 } | |
3166 | |
3167 case TOKsemicolon: | |
3168 if (!(flags & PSsemi)) | |
3169 error("use '{ }' for an empty statement, not a ';'"); | |
3170 nextToken(); | |
3171 s = new ExpStatement(loc, NULL); | |
3172 break; | |
3173 | |
3174 case TOKdo: | |
3175 { Statement *body; | |
3176 Expression *condition; | |
3177 | |
3178 nextToken(); | |
3179 body = parseStatement(PSscope); | |
3180 check(TOKwhile); | |
3181 check(TOKlparen); | |
3182 condition = parseExpression(); | |
3183 check(TOKrparen); | |
3184 s = new DoStatement(loc, body, condition); | |
3185 break; | |
3186 } | |
3187 | |
3188 case TOKfor: | |
3189 { | |
3190 Statement *init; | |
3191 Expression *condition; | |
3192 Expression *increment; | |
3193 Statement *body; | |
3194 | |
3195 nextToken(); | |
3196 check(TOKlparen); | |
3197 if (token.value == TOKsemicolon) | |
3198 { init = NULL; | |
3199 nextToken(); | |
3200 } | |
3201 else | |
3202 { init = parseStatement(0); | |
3203 } | |
3204 if (token.value == TOKsemicolon) | |
3205 { | |
3206 condition = NULL; | |
3207 nextToken(); | |
3208 } | |
3209 else | |
3210 { | |
3211 condition = parseExpression(); | |
3212 check(TOKsemicolon, "for condition"); | |
3213 } | |
3214 if (token.value == TOKrparen) | |
3215 { increment = NULL; | |
3216 nextToken(); | |
3217 } | |
3218 else | |
3219 { increment = parseExpression(); | |
3220 check(TOKrparen); | |
3221 } | |
3222 body = parseStatement(PSscope); | |
3223 s = new ForStatement(loc, init, condition, increment, body); | |
3224 if (init) | |
3225 s = new ScopeStatement(loc, s); | |
3226 break; | |
3227 } | |
3228 | |
3229 case TOKforeach: | |
3230 case TOKforeach_reverse: | |
3231 { | |
3232 enum TOK op = token.value; | |
3233 Arguments *arguments; | |
3234 | |
3235 Statement *d; | |
3236 Statement *body; | |
3237 Expression *aggr; | |
3238 | |
3239 nextToken(); | |
3240 check(TOKlparen); | |
3241 | |
3242 arguments = new Arguments(); | |
3243 | |
3244 while (1) | |
3245 { | |
3246 Type *tb; | |
3247 Identifier *ai = NULL; | |
3248 Type *at; | |
3249 unsigned storageClass; | |
3250 Argument *a; | |
3251 | |
3252 storageClass = 0; | |
3253 if (token.value == TOKinout || token.value == TOKref) | |
3254 { storageClass = STCref; | |
3255 nextToken(); | |
3256 } | |
3257 if (token.value == TOKidentifier) | |
3258 { | |
3259 Token *t = peek(&token); | |
3260 if (t->value == TOKcomma || t->value == TOKsemicolon) | |
3261 { ai = token.ident; | |
3262 at = NULL; // infer argument type | |
3263 nextToken(); | |
3264 goto Larg; | |
3265 } | |
3266 } | |
3267 at = parseType(&ai); | |
3268 if (!ai) | |
3269 error("no identifier for declarator %s", at->toChars()); | |
3270 Larg: | |
3271 a = new Argument(storageClass, at, ai, NULL); | |
3272 arguments->push(a); | |
3273 if (token.value == TOKcomma) | |
3274 { nextToken(); | |
3275 continue; | |
3276 } | |
3277 break; | |
3278 } | |
3279 check(TOKsemicolon); | |
3280 | |
3281 aggr = parseExpression(); | |
3282 if (token.value == TOKslice && arguments->dim == 1) | |
3283 { | |
3284 Argument *a = (Argument *)arguments->data[0]; | |
3285 delete arguments; | |
3286 nextToken(); | |
3287 Expression *upr = parseExpression(); | |
3288 check(TOKrparen); | |
3289 body = parseStatement(0); | |
3290 s = new ForeachRangeStatement(loc, op, a, aggr, upr, body); | |
3291 } | |
3292 else | |
3293 { | |
3294 check(TOKrparen); | |
3295 body = parseStatement(0); | |
3296 s = new ForeachStatement(loc, op, arguments, aggr, body); | |
3297 } | |
3298 break; | |
3299 } | |
3300 | |
3301 case TOKif: | |
3302 { Argument *arg = NULL; | |
3303 Expression *condition; | |
3304 Statement *ifbody; | |
3305 Statement *elsebody; | |
3306 | |
3307 nextToken(); | |
3308 check(TOKlparen); | |
3309 | |
3310 if (token.value == TOKauto) | |
3311 { | |
3312 nextToken(); | |
3313 if (token.value == TOKidentifier) | |
3314 { | |
3315 Token *t = peek(&token); | |
3316 if (t->value == TOKassign) | |
3317 { | |
3318 arg = new Argument(0, NULL, token.ident, NULL); | |
3319 nextToken(); | |
3320 nextToken(); | |
3321 } | |
3322 else | |
3323 { error("= expected following auto identifier"); | |
3324 goto Lerror; | |
3325 } | |
3326 } | |
3327 else | |
3328 { error("identifier expected following auto"); | |
3329 goto Lerror; | |
3330 } | |
3331 } | |
3332 else if (isDeclaration(&token, 2, TOKassign, NULL)) | |
3333 { | |
3334 Type *at; | |
3335 Identifier *ai; | |
3336 | |
3337 at = parseType(&ai); | |
3338 check(TOKassign); | |
3339 arg = new Argument(0, at, ai, NULL); | |
3340 } | |
3341 | |
3342 // Check for " ident;" | |
3343 else if (token.value == TOKidentifier) | |
3344 { | |
3345 Token *t = peek(&token); | |
3346 if (t->value == TOKcomma || t->value == TOKsemicolon) | |
3347 { | |
3348 arg = new Argument(0, NULL, token.ident, NULL); | |
3349 nextToken(); | |
3350 nextToken(); | |
3351 if (1 || !global.params.useDeprecated) | |
3352 error("if (v; e) is deprecated, use if (auto v = e)"); | |
3353 } | |
3354 } | |
3355 | |
3356 condition = parseExpression(); | |
3357 check(TOKrparen); | |
3358 ifbody = parseStatement(PSscope); | |
3359 if (token.value == TOKelse) | |
3360 { | |
3361 nextToken(); | |
3362 elsebody = parseStatement(PSscope); | |
3363 } | |
3364 else | |
3365 elsebody = NULL; | |
3366 s = new IfStatement(loc, arg, condition, ifbody, elsebody); | |
3367 break; | |
3368 } | |
3369 | |
3370 case TOKscope: | |
3371 if (peek(&token)->value != TOKlparen) | |
3372 goto Ldeclaration; // scope used as storage class | |
3373 nextToken(); | |
3374 check(TOKlparen); | |
3375 if (token.value != TOKidentifier) | |
3376 { error("scope identifier expected"); | |
3377 goto Lerror; | |
3378 } | |
3379 else | |
3380 { TOK t = TOKon_scope_exit; | |
3381 Identifier *id = token.ident; | |
3382 | |
3383 if (id == Id::exit) | |
3384 t = TOKon_scope_exit; | |
3385 else if (id == Id::failure) | |
3386 t = TOKon_scope_failure; | |
3387 else if (id == Id::success) | |
3388 t = TOKon_scope_success; | |
3389 else | |
3390 error("valid scope identifiers are exit, failure, or success, not %s", id->toChars()); | |
3391 nextToken(); | |
3392 check(TOKrparen); | |
3393 Statement *st = parseStatement(PScurlyscope); | |
3394 s = new OnScopeStatement(loc, t, st); | |
3395 break; | |
3396 } | |
3397 | |
3398 case TOKdebug: | |
3399 nextToken(); | |
3400 condition = parseDebugCondition(); | |
3401 goto Lcondition; | |
3402 | |
3403 case TOKversion: | |
3404 nextToken(); | |
3405 condition = parseVersionCondition(); | |
3406 goto Lcondition; | |
3407 | |
3408 Lcondition: | |
3409 ifbody = parseStatement(0 /*PSsemi*/); | |
3410 elsebody = NULL; | |
3411 if (token.value == TOKelse) | |
3412 { | |
3413 nextToken(); | |
3414 elsebody = parseStatement(0 /*PSsemi*/); | |
3415 } | |
3416 s = new ConditionalStatement(loc, condition, ifbody, elsebody); | |
3417 break; | |
3418 | |
3419 case TOKpragma: | |
3420 { Identifier *ident; | |
3421 Expressions *args = NULL; | |
3422 Statement *body; | |
3423 | |
3424 nextToken(); | |
3425 check(TOKlparen); | |
3426 if (token.value != TOKidentifier) | |
3427 { error("pragma(identifier expected"); | |
3428 goto Lerror; | |
3429 } | |
3430 ident = token.ident; | |
3431 nextToken(); | |
3432 if (token.value == TOKcomma) | |
3433 args = parseArguments(); // pragma(identifier, args...); | |
3434 else | |
3435 check(TOKrparen); // pragma(identifier); | |
3436 if (token.value == TOKsemicolon) | |
3437 { nextToken(); | |
3438 body = NULL; | |
3439 } | |
3440 else | |
3441 body = parseStatement(PSsemi); | |
3442 s = new PragmaStatement(loc, ident, args, body); | |
3443 break; | |
3444 } | |
3445 | |
3446 case TOKswitch: | |
3447 { Expression *condition; | |
3448 Statement *body; | |
3449 | |
3450 nextToken(); | |
3451 check(TOKlparen); | |
3452 condition = parseExpression(); | |
3453 check(TOKrparen); | |
3454 body = parseStatement(PSscope); | |
3455 s = new SwitchStatement(loc, condition, body); | |
3456 break; | |
3457 } | |
3458 | |
3459 case TOKcase: | |
3460 { Expression *exp; | |
3461 Statements *statements; | |
3462 Array cases; // array of Expression's | |
3463 | |
3464 while (1) | |
3465 { | |
3466 nextToken(); | |
3467 exp = parseAssignExp(); | |
3468 cases.push(exp); | |
3469 if (token.value != TOKcomma) | |
3470 break; | |
3471 } | |
3472 check(TOKcolon); | |
3473 | |
3474 statements = new Statements(); | |
3475 while (token.value != TOKcase && | |
3476 token.value != TOKdefault && | |
3477 token.value != TOKrcurly) | |
3478 { | |
3479 statements->push(parseStatement(PSsemi | PScurlyscope)); | |
3480 } | |
3481 s = new CompoundStatement(loc, statements); | |
3482 s = new ScopeStatement(loc, s); | |
3483 | |
3484 // Keep cases in order by building the case statements backwards | |
3485 for (int i = cases.dim; i; i--) | |
3486 { | |
3487 exp = (Expression *)cases.data[i - 1]; | |
3488 s = new CaseStatement(loc, exp, s); | |
3489 } | |
3490 break; | |
3491 } | |
3492 | |
3493 case TOKdefault: | |
3494 { | |
3495 Statements *statements; | |
3496 | |
3497 nextToken(); | |
3498 check(TOKcolon); | |
3499 | |
3500 statements = new Statements(); | |
3501 while (token.value != TOKcase && | |
3502 token.value != TOKdefault && | |
3503 token.value != TOKrcurly) | |
3504 { | |
3505 statements->push(parseStatement(PSsemi | PScurlyscope)); | |
3506 } | |
3507 s = new CompoundStatement(loc, statements); | |
3508 s = new ScopeStatement(loc, s); | |
3509 s = new DefaultStatement(loc, s); | |
3510 break; | |
3511 } | |
3512 | |
3513 case TOKreturn: | |
3514 { Expression *exp; | |
3515 | |
3516 nextToken(); | |
3517 if (token.value == TOKsemicolon) | |
3518 exp = NULL; | |
3519 else | |
3520 exp = parseExpression(); | |
3521 check(TOKsemicolon, "return statement"); | |
3522 s = new ReturnStatement(loc, exp); | |
3523 break; | |
3524 } | |
3525 | |
3526 case TOKbreak: | |
3527 { Identifier *ident; | |
3528 | |
3529 nextToken(); | |
3530 if (token.value == TOKidentifier) | |
3531 { ident = token.ident; | |
3532 nextToken(); | |
3533 } | |
3534 else | |
3535 ident = NULL; | |
3536 check(TOKsemicolon, "break statement"); | |
3537 s = new BreakStatement(loc, ident); | |
3538 break; | |
3539 } | |
3540 | |
3541 case TOKcontinue: | |
3542 { Identifier *ident; | |
3543 | |
3544 nextToken(); | |
3545 if (token.value == TOKidentifier) | |
3546 { ident = token.ident; | |
3547 nextToken(); | |
3548 } | |
3549 else | |
3550 ident = NULL; | |
3551 check(TOKsemicolon, "continue statement"); | |
3552 s = new ContinueStatement(loc, ident); | |
3553 break; | |
3554 } | |
3555 | |
3556 case TOKgoto: | |
3557 { Identifier *ident; | |
3558 | |
3559 nextToken(); | |
3560 if (token.value == TOKdefault) | |
3561 { | |
3562 nextToken(); | |
3563 s = new GotoDefaultStatement(loc); | |
3564 } | |
3565 else if (token.value == TOKcase) | |
3566 { | |
3567 Expression *exp = NULL; | |
3568 | |
3569 nextToken(); | |
3570 if (token.value != TOKsemicolon) | |
3571 exp = parseExpression(); | |
3572 s = new GotoCaseStatement(loc, exp); | |
3573 } | |
3574 else | |
3575 { | |
3576 if (token.value != TOKidentifier) | |
3577 { error("Identifier expected following goto"); | |
3578 ident = NULL; | |
3579 } | |
3580 else | |
3581 { ident = token.ident; | |
3582 nextToken(); | |
3583 } | |
3584 s = new GotoStatement(loc, ident); | |
3585 } | |
3586 check(TOKsemicolon, "goto statement"); | |
3587 break; | |
3588 } | |
3589 | |
3590 case TOKsynchronized: | |
3591 { Expression *exp; | |
3592 Statement *body; | |
3593 | |
3594 nextToken(); | |
3595 if (token.value == TOKlparen) | |
3596 { | |
3597 nextToken(); | |
3598 exp = parseExpression(); | |
3599 check(TOKrparen); | |
3600 } | |
3601 else | |
3602 exp = NULL; | |
3603 body = parseStatement(PSscope); | |
3604 s = new SynchronizedStatement(loc, exp, body); | |
3605 break; | |
3606 } | |
3607 | |
3608 case TOKwith: | |
3609 { Expression *exp; | |
3610 Statement *body; | |
3611 | |
3612 nextToken(); | |
3613 check(TOKlparen); | |
3614 exp = parseExpression(); | |
3615 check(TOKrparen); | |
3616 body = parseStatement(PSscope); | |
3617 s = new WithStatement(loc, exp, body); | |
3618 break; | |
3619 } | |
3620 | |
3621 case TOKtry: | |
3622 { Statement *body; | |
3623 Array *catches = NULL; | |
3624 Statement *finalbody = NULL; | |
3625 | |
3626 nextToken(); | |
3627 body = parseStatement(PSscope); | |
3628 while (token.value == TOKcatch) | |
3629 { | |
3630 Statement *handler; | |
3631 Catch *c; | |
3632 Type *t; | |
3633 Identifier *id; | |
3634 Loc loc = this->loc; | |
3635 | |
3636 nextToken(); | |
3637 if (token.value == TOKlcurly) | |
3638 { | |
3639 t = NULL; | |
3640 id = NULL; | |
3641 } | |
3642 else | |
3643 { | |
3644 check(TOKlparen); | |
3645 id = NULL; | |
3646 t = parseType(&id); | |
3647 check(TOKrparen); | |
3648 } | |
3649 handler = parseStatement(0); | |
3650 c = new Catch(loc, t, id, handler); | |
3651 if (!catches) | |
3652 catches = new Array(); | |
3653 catches->push(c); | |
3654 } | |
3655 | |
3656 if (token.value == TOKfinally) | |
3657 { nextToken(); | |
3658 finalbody = parseStatement(0); | |
3659 } | |
3660 | |
3661 s = body; | |
3662 if (!catches && !finalbody) | |
3663 error("catch or finally expected following try"); | |
3664 else | |
3665 { if (catches) | |
3666 s = new TryCatchStatement(loc, body, catches); | |
3667 if (finalbody) | |
3668 s = new TryFinallyStatement(loc, s, finalbody); | |
3669 } | |
3670 break; | |
3671 } | |
3672 | |
3673 case TOKthrow: | |
3674 { Expression *exp; | |
3675 | |
3676 nextToken(); | |
3677 exp = parseExpression(); | |
3678 check(TOKsemicolon, "throw statement"); | |
3679 s = new ThrowStatement(loc, exp); | |
3680 break; | |
3681 } | |
3682 | |
3683 case TOKvolatile: | |
3684 nextToken(); | |
3685 s = parseStatement(PSsemi | PScurlyscope); | |
3686 #if DMDV2 | |
3687 if (!global.params.useDeprecated) | |
3688 error("volatile statements deprecated; used synchronized statements instead"); | |
3689 #endif | |
3690 s = new VolatileStatement(loc, s); | |
3691 break; | |
3692 | |
3693 case TOKasm: | |
3694 { Statements *statements; | |
3695 Identifier *label; | |
3696 Loc labelloc; | |
3697 Token *toklist; | |
3698 Token **ptoklist; | |
3699 | |
3700 // Parse the asm block into a sequence of AsmStatements, | |
3701 // each AsmStatement is one instruction. | |
3702 // Separate out labels. | |
3703 // Defer parsing of AsmStatements until semantic processing. | |
3704 | |
3705 nextToken(); | |
3706 check(TOKlcurly); | |
3707 toklist = NULL; | |
3708 ptoklist = &toklist; | |
3709 label = NULL; | |
3710 statements = new Statements(); | |
3711 while (1) | |
3712 { | |
3713 switch (token.value) | |
3714 { | |
3715 case TOKidentifier: | |
3716 if (!toklist) | |
3717 { | |
3718 // Look ahead to see if it is a label | |
3719 t = peek(&token); | |
3720 if (t->value == TOKcolon) | |
3721 { // It's a label | |
3722 label = token.ident; | |
3723 labelloc = this->loc; | |
3724 nextToken(); | |
3725 nextToken(); | |
3726 continue; | |
3727 } | |
3728 } | |
3729 goto Ldefault; | |
3730 | |
3731 case TOKrcurly: | |
3732 if (toklist || label) | |
3733 { | |
3734 error("asm statements must end in ';'"); | |
3735 } | |
3736 break; | |
3737 | |
3738 case TOKsemicolon: | |
3739 s = NULL; | |
3740 if (toklist || label) | |
3741 { // Create AsmStatement from list of tokens we've saved | |
3742 s = new AsmStatement(this->loc, toklist); | |
3743 toklist = NULL; | |
3744 ptoklist = &toklist; | |
3745 if (label) | |
3746 { s = new LabelStatement(labelloc, label, s); | |
3747 label = NULL; | |
3748 } | |
3749 statements->push(s); | |
3750 } | |
3751 nextToken(); | |
3752 continue; | |
3753 | |
3754 case TOKeof: | |
3755 /* { */ | |
3756 error("matching '}' expected, not end of file"); | |
3757 break; | |
3758 | |
3759 default: | |
3760 Ldefault: | |
3761 *ptoklist = new Token(); | |
3762 memcpy(*ptoklist, &token, sizeof(Token)); | |
3763 ptoklist = &(*ptoklist)->next; | |
3764 *ptoklist = NULL; | |
3765 | |
3766 nextToken(); | |
3767 continue; | |
3768 } | |
3769 break; | |
3770 } | |
3771 s = new AsmBlockStatement(loc, statements); | |
3772 nextToken(); | |
3773 break; | |
3774 } | |
3775 | |
3776 default: | |
3777 error("found '%s' instead of statement", token.toChars()); | |
3778 goto Lerror; | |
3779 | |
3780 Lerror: | |
3781 while (token.value != TOKrcurly && | |
3782 token.value != TOKsemicolon && | |
3783 token.value != TOKeof) | |
3784 nextToken(); | |
3785 if (token.value == TOKsemicolon) | |
3786 nextToken(); | |
3787 s = NULL; | |
3788 break; | |
3789 } | |
3790 | |
3791 return s; | |
3792 } | |
3793 | |
3794 void Parser::check(enum TOK value) | |
3795 { | |
3796 check(loc, value); | |
3797 } | |
3798 | |
3799 void Parser::check(Loc loc, enum TOK value) | |
3800 { | |
3801 if (token.value != value) | |
3802 error(loc, "found '%s' when expecting '%s'", token.toChars(), Token::toChars(value)); | |
3803 nextToken(); | |
3804 } | |
3805 | |
3806 void Parser::check(enum TOK value, const char *string) | |
3807 { | |
3808 if (token.value != value) | |
3809 error("found '%s' when expecting '%s' following '%s'", | |
3810 token.toChars(), Token::toChars(value), string); | |
3811 nextToken(); | |
3812 } | |
3813 | |
3814 /************************************ | |
3815 * Determine if the scanner is sitting on the start of a declaration. | |
3816 * Input: | |
3817 * needId 0 no identifier | |
3818 * 1 identifier optional | |
3819 * 2 must have identifier | |
3820 */ | |
3821 | |
3822 int Parser::isDeclaration(Token *t, int needId, enum TOK endtok, Token **pt) | |
3823 { | |
3824 //printf("isDeclaration(needId = %d)\n", needId); | |
3825 int haveId = 0; | |
3826 | |
3827 #if DMDV2 | |
3828 if ((t->value == TOKconst || t->value == TOKinvariant || token.value == TOKimmutable) && | |
3829 peek(t)->value != TOKlparen) | |
3830 { /* const type | |
3831 * invariant type | |
3832 */ | |
3833 t = peek(t); | |
3834 } | |
3835 #endif | |
3836 | |
3837 if (!isBasicType(&t)) | |
3838 goto Lisnot; | |
3839 if (!isDeclarator(&t, &haveId, endtok)) | |
3840 goto Lisnot; | |
3841 if ( needId == 1 || | |
3842 (needId == 0 && !haveId) || | |
3843 (needId == 2 && haveId)) | |
3844 { if (pt) | |
3845 *pt = t; | |
3846 goto Lis; | |
3847 } | |
3848 else | |
3849 goto Lisnot; | |
3850 | |
3851 Lis: | |
3852 //printf("\tis declaration\n"); | |
3853 return TRUE; | |
3854 | |
3855 Lisnot: | |
3856 //printf("\tis not declaration\n"); | |
3857 return FALSE; | |
3858 } | |
3859 | |
3860 int Parser::isBasicType(Token **pt) | |
3861 { | |
3862 // This code parallels parseBasicType() | |
3863 Token *t = *pt; | |
3864 Token *t2; | |
3865 int parens; | |
3866 int haveId = 0; | |
3867 | |
3868 switch (t->value) | |
3869 { | |
3870 CASE_BASIC_TYPES: | |
3871 t = peek(t); | |
3872 break; | |
3873 | |
3874 case TOKidentifier: | |
3875 L5: | |
3876 t = peek(t); | |
3877 if (t->value == TOKnot) | |
3878 { | |
3879 goto L4; | |
3880 } | |
3881 goto L3; | |
3882 while (1) | |
3883 { | |
3884 L2: | |
3885 t = peek(t); | |
3886 L3: | |
3887 if (t->value == TOKdot) | |
3888 { | |
3889 Ldot: | |
3890 t = peek(t); | |
3891 if (t->value != TOKidentifier) | |
3892 goto Lfalse; | |
3893 t = peek(t); | |
3894 if (t->value != TOKnot) | |
3895 goto L3; | |
3896 L4: | |
3897 /* Seen a ! | |
3898 * Look for: | |
3899 * !( args ), !identifier, etc. | |
3900 */ | |
3901 t = peek(t); | |
3902 switch (t->value) | |
3903 { case TOKidentifier: | |
3904 goto L5; | |
3905 case TOKlparen: | |
3906 if (!skipParens(t, &t)) | |
3907 goto Lfalse; | |
3908 break; | |
3909 CASE_BASIC_TYPES: | |
3910 case TOKint32v: | |
3911 case TOKuns32v: | |
3912 case TOKint64v: | |
3913 case TOKuns64v: | |
3914 case TOKfloat32v: | |
3915 case TOKfloat64v: | |
3916 case TOKfloat80v: | |
3917 case TOKimaginary32v: | |
3918 case TOKimaginary64v: | |
3919 case TOKimaginary80v: | |
3920 case TOKnull: | |
3921 case TOKtrue: | |
3922 case TOKfalse: | |
3923 case TOKcharv: | |
3924 case TOKwcharv: | |
3925 case TOKdcharv: | |
3926 case TOKstring: | |
3927 case TOKfile: | |
3928 case TOKline: | |
3929 goto L2; | |
3930 default: | |
3931 goto Lfalse; | |
3932 } | |
3933 } | |
3934 else | |
3935 break; | |
3936 } | |
3937 break; | |
3938 | |
3939 case TOKdot: | |
3940 goto Ldot; | |
3941 | |
3942 case TOKtypeof: | |
3943 /* typeof(exp).identifier... | |
3944 */ | |
3945 t = peek(t); | |
3946 if (t->value != TOKlparen) | |
3947 goto Lfalse; | |
3948 if (!skipParens(t, &t)) | |
3949 goto Lfalse; | |
3950 goto L2; | |
3951 | |
3952 case TOKconst: | |
3953 case TOKinvariant: | |
3954 case TOKimmutable: | |
3955 // const(type) or invariant(type) | |
3956 t = peek(t); | |
3957 if (t->value != TOKlparen) | |
3958 goto Lfalse; | |
3959 t = peek(t); | |
3960 if (!isDeclaration(t, 0, TOKrparen, &t)) | |
3961 goto Lfalse; | |
3962 t = peek(t); | |
3963 break; | |
3964 | |
3965 default: | |
3966 goto Lfalse; | |
3967 } | |
3968 *pt = t; | |
3969 //printf("is\n"); | |
3970 return TRUE; | |
3971 | |
3972 Lfalse: | |
3973 //printf("is not\n"); | |
3974 return FALSE; | |
3975 } | |
3976 | |
3977 int Parser::isDeclarator(Token **pt, int *haveId, enum TOK endtok) | |
3978 { // This code parallels parseDeclarator() | |
3979 Token *t = *pt; | |
3980 int parens; | |
3981 | |
3982 //printf("Parser::isDeclarator()\n"); | |
3983 //t->print(); | |
3984 if (t->value == TOKassign) | |
3985 return FALSE; | |
3986 | |
3987 while (1) | |
3988 { | |
3989 parens = FALSE; | |
3990 switch (t->value) | |
3991 { | |
3992 case TOKmul: | |
3993 // case TOKand: | |
3994 t = peek(t); | |
3995 continue; | |
3996 | |
3997 case TOKlbracket: | |
3998 t = peek(t); | |
3999 if (t->value == TOKrbracket) | |
4000 { | |
4001 t = peek(t); | |
4002 } | |
4003 else if (isDeclaration(t, 0, TOKrbracket, &t)) | |
4004 { // It's an associative array declaration | |
4005 t = peek(t); | |
4006 } | |
4007 else | |
4008 { | |
4009 // [ expression ] | |
4010 // [ expression .. expression ] | |
4011 if (!isExpression(&t)) | |
4012 return FALSE; | |
4013 if (t->value == TOKslice) | |
4014 { t = peek(t); | |
4015 if (!isExpression(&t)) | |
4016 return FALSE; | |
4017 } | |
4018 if (t->value != TOKrbracket) | |
4019 return FALSE; | |
4020 t = peek(t); | |
4021 } | |
4022 continue; | |
4023 | |
4024 case TOKidentifier: | |
4025 if (*haveId) | |
4026 return FALSE; | |
4027 *haveId = TRUE; | |
4028 t = peek(t); | |
4029 break; | |
4030 | |
4031 case TOKlparen: | |
4032 t = peek(t); | |
4033 | |
4034 if (t->value == TOKrparen) | |
4035 return FALSE; // () is not a declarator | |
4036 | |
4037 /* Regard ( identifier ) as not a declarator | |
4038 * BUG: what about ( *identifier ) in | |
4039 * f(*p)(x); | |
4040 * where f is a class instance with overloaded () ? | |
4041 * Should we just disallow C-style function pointer declarations? | |
4042 */ | |
4043 if (t->value == TOKidentifier) | |
4044 { Token *t2 = peek(t); | |
4045 if (t2->value == TOKrparen) | |
4046 return FALSE; | |
4047 } | |
4048 | |
4049 | |
4050 if (!isDeclarator(&t, haveId, TOKrparen)) | |
4051 return FALSE; | |
4052 t = peek(t); | |
4053 parens = TRUE; | |
4054 break; | |
4055 | |
4056 case TOKdelegate: | |
4057 case TOKfunction: | |
4058 t = peek(t); | |
4059 if (!isParameters(&t)) | |
4060 return FALSE; | |
4061 continue; | |
4062 } | |
4063 break; | |
4064 } | |
4065 | |
4066 while (1) | |
4067 { | |
4068 switch (t->value) | |
4069 { | |
4070 #if CARRAYDECL | |
4071 case TOKlbracket: | |
4072 parens = FALSE; | |
4073 t = peek(t); | |
4074 if (t->value == TOKrbracket) | |
4075 { | |
4076 t = peek(t); | |
4077 } | |
4078 else if (isDeclaration(t, 0, TOKrbracket, &t)) | |
4079 { // It's an associative array declaration | |
4080 t = peek(t); | |
4081 } | |
4082 else | |
4083 { | |
4084 // [ expression ] | |
4085 if (!isExpression(&t)) | |
4086 return FALSE; | |
4087 if (t->value != TOKrbracket) | |
4088 return FALSE; | |
4089 t = peek(t); | |
4090 } | |
4091 continue; | |
4092 #endif | |
4093 | |
4094 case TOKlparen: | |
4095 parens = FALSE; | |
4096 if (!isParameters(&t)) | |
4097 return FALSE; | |
4098 while (1) | |
4099 { | |
4100 switch (t->value) | |
4101 { | |
4102 case TOKconst: | |
4103 case TOKinvariant: | |
4104 case TOKimmutable: | |
4105 case TOKpure: | |
4106 case TOKnothrow: | |
4107 t = peek(t); | |
4108 continue; | |
4109 default: | |
4110 break; | |
4111 } | |
4112 break; | |
4113 } | |
4114 continue; | |
4115 | |
4116 // Valid tokens that follow a declaration | |
4117 case TOKrparen: | |
4118 case TOKrbracket: | |
4119 case TOKassign: | |
4120 case TOKcomma: | |
4121 case TOKsemicolon: | |
4122 case TOKlcurly: | |
4123 case TOKin: | |
4124 // The !parens is to disallow unnecessary parentheses | |
4125 if (!parens && (endtok == TOKreserved || endtok == t->value)) | |
4126 { *pt = t; | |
4127 return TRUE; | |
4128 } | |
4129 return FALSE; | |
4130 | |
4131 default: | |
4132 return FALSE; | |
4133 } | |
4134 } | |
4135 } | |
4136 | |
4137 | |
4138 int Parser::isParameters(Token **pt) | |
4139 { // This code parallels parseParameters() | |
4140 Token *t = *pt; | |
4141 int tmp; | |
4142 | |
4143 //printf("isParameters()\n"); | |
4144 if (t->value != TOKlparen) | |
4145 return FALSE; | |
4146 | |
4147 t = peek(t); | |
4148 for (;1; t = peek(t)) | |
4149 { | |
4150 switch (t->value) | |
4151 { | |
4152 case TOKrparen: | |
4153 break; | |
4154 | |
4155 case TOKdotdotdot: | |
4156 t = peek(t); | |
4157 break; | |
4158 | |
4159 case TOKin: | |
4160 case TOKout: | |
4161 case TOKinout: | |
4162 case TOKref: | |
4163 case TOKlazy: | |
4164 case TOKconst: | |
4165 case TOKinvariant: | |
4166 case TOKimmutable: | |
4167 case TOKfinal: | |
4168 continue; | |
4169 | |
4170 #if 0 | |
4171 case TOKstatic: | |
4172 continue; | |
4173 case TOKauto: | |
4174 case TOKalias: | |
4175 t = peek(t); | |
4176 if (t->value == TOKidentifier) | |
4177 t = peek(t); | |
4178 if (t->value == TOKassign) | |
4179 { t = peek(t); | |
4180 if (!isExpression(&t)) | |
4181 return FALSE; | |
4182 } | |
4183 goto L3; | |
4184 #endif | |
4185 | |
4186 default: | |
4187 if (!isBasicType(&t)) | |
4188 return FALSE; | |
4189 tmp = FALSE; | |
4190 if (t->value != TOKdotdotdot && | |
4191 !isDeclarator(&t, &tmp, TOKreserved)) | |
4192 return FALSE; | |
4193 if (t->value == TOKassign) | |
4194 { t = peek(t); | |
4195 if (!isExpression(&t)) | |
4196 return FALSE; | |
4197 } | |
4198 if (t->value == TOKdotdotdot) | |
4199 { | |
4200 t = peek(t); | |
4201 break; | |
4202 } | |
4203 L3: | |
4204 if (t->value == TOKcomma) | |
4205 { | |
4206 continue; | |
4207 } | |
4208 break; | |
4209 } | |
4210 break; | |
4211 } | |
4212 if (t->value != TOKrparen) | |
4213 return FALSE; | |
4214 t = peek(t); | |
4215 *pt = t; | |
4216 return TRUE; | |
4217 } | |
4218 | |
4219 int Parser::isExpression(Token **pt) | |
4220 { | |
4221 // This is supposed to determine if something is an expression. | |
4222 // What it actually does is scan until a closing right bracket | |
4223 // is found. | |
4224 | |
4225 Token *t = *pt; | |
4226 int brnest = 0; | |
4227 int panest = 0; | |
4228 int curlynest = 0; | |
4229 | |
4230 for (;; t = peek(t)) | |
4231 { | |
4232 switch (t->value) | |
4233 { | |
4234 case TOKlbracket: | |
4235 brnest++; | |
4236 continue; | |
4237 | |
4238 case TOKrbracket: | |
4239 if (--brnest >= 0) | |
4240 continue; | |
4241 break; | |
4242 | |
4243 case TOKlparen: | |
4244 panest++; | |
4245 continue; | |
4246 | |
4247 case TOKcomma: | |
4248 if (brnest || panest) | |
4249 continue; | |
4250 break; | |
4251 | |
4252 case TOKrparen: | |
4253 if (--panest >= 0) | |
4254 continue; | |
4255 break; | |
4256 | |
4257 case TOKlcurly: | |
4258 curlynest++; | |
4259 continue; | |
4260 | |
4261 case TOKrcurly: | |
4262 if (--curlynest >= 0) | |
4263 continue; | |
4264 return FALSE; | |
4265 | |
4266 case TOKslice: | |
4267 if (brnest) | |
4268 continue; | |
4269 break; | |
4270 | |
4271 case TOKsemicolon: | |
4272 if (curlynest) | |
4273 continue; | |
4274 return FALSE; | |
4275 | |
4276 case TOKeof: | |
4277 return FALSE; | |
4278 | |
4279 default: | |
4280 continue; | |
4281 } | |
4282 break; | |
4283 } | |
4284 | |
4285 *pt = t; | |
4286 return TRUE; | |
4287 } | |
4288 | |
4289 /********************************************** | |
4290 * Skip over | |
4291 * instance foo.bar(parameters...) | |
4292 * Output: | |
4293 * if (pt), *pt is set to the token following the closing ) | |
4294 * Returns: | |
4295 * 1 it's valid instance syntax | |
4296 * 0 invalid instance syntax | |
4297 */ | |
4298 | |
4299 int Parser::isTemplateInstance(Token *t, Token **pt) | |
4300 { | |
4301 t = peek(t); | |
4302 if (t->value != TOKdot) | |
4303 { | |
4304 if (t->value != TOKidentifier) | |
4305 goto Lfalse; | |
4306 t = peek(t); | |
4307 } | |
4308 while (t->value == TOKdot) | |
4309 { | |
4310 t = peek(t); | |
4311 if (t->value != TOKidentifier) | |
4312 goto Lfalse; | |
4313 t = peek(t); | |
4314 } | |
4315 if (t->value != TOKlparen) | |
4316 goto Lfalse; | |
4317 | |
4318 // Skip over the template arguments | |
4319 while (1) | |
4320 { | |
4321 while (1) | |
4322 { | |
4323 t = peek(t); | |
4324 switch (t->value) | |
4325 { | |
4326 case TOKlparen: | |
4327 if (!skipParens(t, &t)) | |
4328 goto Lfalse; | |
4329 continue; | |
4330 case TOKrparen: | |
4331 break; | |
4332 case TOKcomma: | |
4333 break; | |
4334 case TOKeof: | |
4335 case TOKsemicolon: | |
4336 goto Lfalse; | |
4337 default: | |
4338 continue; | |
4339 } | |
4340 break; | |
4341 } | |
4342 | |
4343 if (t->value != TOKcomma) | |
4344 break; | |
4345 } | |
4346 if (t->value != TOKrparen) | |
4347 goto Lfalse; | |
4348 t = peek(t); | |
4349 if (pt) | |
4350 *pt = t; | |
4351 return 1; | |
4352 | |
4353 Lfalse: | |
4354 return 0; | |
4355 } | |
4356 | |
4357 /******************************************* | |
4358 * Skip parens, brackets. | |
4359 * Input: | |
4360 * t is on opening ( | |
4361 * Output: | |
4362 * *pt is set to closing token, which is ')' on success | |
4363 * Returns: | |
4364 * !=0 successful | |
4365 * 0 some parsing error | |
4366 */ | |
4367 | |
4368 int Parser::skipParens(Token *t, Token **pt) | |
4369 { | |
4370 int parens = 0; | |
4371 | |
4372 while (1) | |
4373 { | |
4374 switch (t->value) | |
4375 { | |
4376 case TOKlparen: | |
4377 parens++; | |
4378 break; | |
4379 | |
4380 case TOKrparen: | |
4381 parens--; | |
4382 if (parens < 0) | |
4383 goto Lfalse; | |
4384 if (parens == 0) | |
4385 goto Ldone; | |
4386 break; | |
4387 | |
4388 case TOKeof: | |
4389 case TOKsemicolon: | |
4390 goto Lfalse; | |
4391 | |
4392 default: | |
4393 break; | |
4394 } | |
4395 t = peek(t); | |
4396 } | |
4397 | |
4398 Ldone: | |
4399 if (*pt) | |
4400 *pt = t; | |
4401 return 1; | |
4402 | |
4403 Lfalse: | |
4404 return 0; | |
4405 } | |
4406 | |
4407 /********************************* Expression Parser ***************************/ | |
4408 | |
4409 Expression *Parser::parsePrimaryExp() | |
4410 { Expression *e; | |
4411 Type *t; | |
4412 Identifier *id; | |
4413 enum TOK save; | |
4414 Loc loc = this->loc; | |
4415 | |
4416 //printf("parsePrimaryExp(): loc = %d\n", loc.linnum); | |
4417 switch (token.value) | |
4418 { | |
4419 case TOKidentifier: | |
4420 id = token.ident; | |
4421 nextToken(); | |
4422 if (token.value == TOKnot && peekNext() != TOKis) | |
4423 { // identifier!(template-argument-list) | |
4424 TemplateInstance *tempinst; | |
4425 | |
4426 tempinst = new TemplateInstance(loc, id); | |
4427 nextToken(); | |
4428 if (token.value == TOKlparen) | |
4429 // ident!(template_arguments) | |
4430 tempinst->tiargs = parseTemplateArgumentList(); | |
4431 else | |
4432 // ident!template_argument | |
4433 tempinst->tiargs = parseTemplateArgument(); | |
4434 e = new ScopeExp(loc, tempinst); | |
4435 } | |
4436 else | |
4437 e = new IdentifierExp(loc, id); | |
4438 break; | |
4439 | |
4440 case TOKdollar: | |
4441 if (!inBrackets) | |
4442 error("'$' is valid only inside [] of index or slice"); | |
4443 e = new DollarExp(loc); | |
4444 nextToken(); | |
4445 break; | |
4446 | |
4447 case TOKdot: | |
4448 // Signal global scope '.' operator with "" identifier | |
4449 e = new IdentifierExp(loc, Id::empty); | |
4450 break; | |
4451 | |
4452 case TOKthis: | |
4453 e = new ThisExp(loc); | |
4454 nextToken(); | |
4455 break; | |
4456 | |
4457 case TOKsuper: | |
4458 e = new SuperExp(loc); | |
4459 nextToken(); | |
4460 break; | |
4461 | |
4462 case TOKint32v: | |
4463 e = new IntegerExp(loc, token.int32value, Type::tint32); | |
4464 nextToken(); | |
4465 break; | |
4466 | |
4467 case TOKuns32v: | |
4468 e = new IntegerExp(loc, token.uns32value, Type::tuns32); | |
4469 nextToken(); | |
4470 break; | |
4471 | |
4472 case TOKint64v: | |
4473 e = new IntegerExp(loc, token.int64value, Type::tint64); | |
4474 nextToken(); | |
4475 break; | |
4476 | |
4477 case TOKuns64v: | |
4478 e = new IntegerExp(loc, token.uns64value, Type::tuns64); | |
4479 nextToken(); | |
4480 break; | |
4481 | |
4482 case TOKfloat32v: | |
4483 e = new RealExp(loc, token.float80value, Type::tfloat32); | |
4484 nextToken(); | |
4485 break; | |
4486 | |
4487 case TOKfloat64v: | |
4488 e = new RealExp(loc, token.float80value, Type::tfloat64); | |
4489 nextToken(); | |
4490 break; | |
4491 | |
4492 case TOKfloat80v: | |
4493 e = new RealExp(loc, token.float80value, Type::tfloat80); | |
4494 nextToken(); | |
4495 break; | |
4496 | |
4497 case TOKimaginary32v: | |
4498 e = new RealExp(loc, token.float80value, Type::timaginary32); | |
4499 nextToken(); | |
4500 break; | |
4501 | |
4502 case TOKimaginary64v: | |
4503 e = new RealExp(loc, token.float80value, Type::timaginary64); | |
4504 nextToken(); | |
4505 break; | |
4506 | |
4507 case TOKimaginary80v: | |
4508 e = new RealExp(loc, token.float80value, Type::timaginary80); | |
4509 nextToken(); | |
4510 break; | |
4511 | |
4512 case TOKnull: | |
4513 e = new NullExp(loc); | |
4514 nextToken(); | |
4515 break; | |
4516 | |
4517 #if DMDV2 | |
4518 case TOKfile: | |
4519 { char *s = loc.filename ? loc.filename : mod->ident->toChars(); | |
4520 e = new StringExp(loc, s, strlen(s), 0); | |
4521 nextToken(); | |
4522 break; | |
4523 } | |
4524 | |
4525 case TOKline: | |
4526 e = new IntegerExp(loc, loc.linnum, Type::tint32); | |
4527 nextToken(); | |
4528 break; | |
4529 #endif | |
4530 | |
4531 case TOKtrue: | |
4532 e = new IntegerExp(loc, 1, Type::tbool); | |
4533 nextToken(); | |
4534 break; | |
4535 | |
4536 case TOKfalse: | |
4537 e = new IntegerExp(loc, 0, Type::tbool); | |
4538 nextToken(); | |
4539 break; | |
4540 | |
4541 case TOKcharv: | |
4542 e = new IntegerExp(loc, token.uns32value, Type::tchar); | |
4543 nextToken(); | |
4544 break; | |
4545 | |
4546 case TOKwcharv: | |
4547 e = new IntegerExp(loc, token.uns32value, Type::twchar); | |
4548 nextToken(); | |
4549 break; | |
4550 | |
4551 case TOKdcharv: | |
4552 e = new IntegerExp(loc, token.uns32value, Type::tdchar); | |
4553 nextToken(); | |
4554 break; | |
4555 | |
4556 case TOKstring: | |
4557 { unsigned char *s; | |
4558 unsigned len; | |
4559 unsigned char postfix; | |
4560 | |
4561 // cat adjacent strings | |
4562 s = token.ustring; | |
4563 len = token.len; | |
4564 postfix = token.postfix; | |
4565 while (1) | |
4566 { | |
4567 nextToken(); | |
4568 if (token.value == TOKstring) | |
4569 { unsigned len1; | |
4570 unsigned len2; | |
4571 unsigned char *s2; | |
4572 | |
4573 if (token.postfix) | |
4574 { if (token.postfix != postfix) | |
4575 error("mismatched string literal postfixes '%c' and '%c'", postfix, token.postfix); | |
4576 postfix = token.postfix; | |
4577 } | |
4578 | |
4579 len1 = len; | |
4580 len2 = token.len; | |
4581 len = len1 + len2; | |
4582 s2 = (unsigned char *)mem.malloc((len + 1) * sizeof(unsigned char)); | |
4583 memcpy(s2, s, len1 * sizeof(unsigned char)); | |
4584 memcpy(s2 + len1, token.ustring, (len2 + 1) * sizeof(unsigned char)); | |
4585 s = s2; | |
4586 } | |
4587 else | |
4588 break; | |
4589 } | |
4590 e = new StringExp(loc, s, len, postfix); | |
4591 break; | |
4592 } | |
4593 | |
4594 CASE_BASIC_TYPES_X(t): | |
4595 nextToken(); | |
4596 L1: | |
4597 check(TOKdot, t->toChars()); | |
4598 if (token.value != TOKidentifier) | |
4599 { error("found '%s' when expecting identifier following '%s.'", token.toChars(), t->toChars()); | |
4600 goto Lerr; | |
4601 } | |
4602 e = new TypeDotIdExp(loc, t, token.ident); | |
4603 nextToken(); | |
4604 break; | |
4605 | |
4606 case TOKtypeof: | |
4607 { | |
4608 t = parseTypeof(); | |
4609 e = new TypeExp(loc, t); | |
4610 break; | |
4611 } | |
4612 | |
4613 case TOKtypeid: | |
4614 { Type *t; | |
4615 | |
4616 nextToken(); | |
4617 check(TOKlparen, "typeid"); | |
4618 t = parseType(); // ( type ) | |
4619 check(TOKrparen); | |
4620 e = new TypeidExp(loc, t); | |
4621 break; | |
4622 } | |
4623 | |
4624 #if DMDV2 | |
4625 case TOKtraits: | |
4626 { /* __traits(identifier, args...) | |
4627 */ | |
4628 Identifier *ident; | |
4629 Objects *args = NULL; | |
4630 | |
4631 nextToken(); | |
4632 check(TOKlparen); | |
4633 if (token.value != TOKidentifier) | |
4634 { error("__traits(identifier, args...) expected"); | |
4635 goto Lerr; | |
4636 } | |
4637 ident = token.ident; | |
4638 nextToken(); | |
4639 if (token.value == TOKcomma) | |
4640 args = parseTemplateArgumentList2(); // __traits(identifier, args...) | |
4641 else | |
4642 check(TOKrparen); // __traits(identifier) | |
4643 | |
4644 e = new TraitsExp(loc, ident, args); | |
4645 break; | |
4646 } | |
4647 #endif | |
4648 | |
4649 case TOKis: | |
4650 { Type *targ; | |
4651 Identifier *ident = NULL; | |
4652 Type *tspec = NULL; | |
4653 enum TOK tok = TOKreserved; | |
4654 enum TOK tok2 = TOKreserved; | |
4655 TemplateParameters *tpl = NULL; | |
4656 Loc loc = this->loc; | |
4657 | |
4658 nextToken(); | |
4659 if (token.value == TOKlparen) | |
4660 { | |
4661 nextToken(); | |
4662 targ = parseType(&ident); | |
4663 if (token.value == TOKcolon || token.value == TOKequal) | |
4664 { | |
4665 tok = token.value; | |
4666 nextToken(); | |
4667 if (tok == TOKequal && | |
4668 (token.value == TOKtypedef || | |
4669 token.value == TOKstruct || | |
4670 token.value == TOKunion || | |
4671 token.value == TOKclass || | |
4672 token.value == TOKsuper || | |
4673 token.value == TOKenum || | |
4674 token.value == TOKinterface || | |
4675 token.value == TOKconst && peek(&token)->value == TOKrparen || | |
4676 token.value == TOKinvariant && peek(&token)->value == TOKrparen || | |
4677 token.value == TOKimmutable && peek(&token)->value == TOKrparen || | |
4678 token.value == TOKfunction || | |
4679 token.value == TOKdelegate || | |
4680 token.value == TOKreturn)) | |
4681 { | |
4682 tok2 = token.value; | |
4683 nextToken(); | |
4684 } | |
4685 else | |
4686 { | |
4687 tspec = parseType(); | |
4688 } | |
4689 } | |
4690 if (ident && tspec) | |
4691 { | |
4692 if (token.value == TOKcomma) | |
4693 tpl = parseTemplateParameterList(1); | |
4694 else | |
4695 { tpl = new TemplateParameters(); | |
4696 check(TOKrparen); | |
4697 } | |
4698 TemplateParameter *tp = new TemplateTypeParameter(loc, ident, NULL, NULL); | |
4699 tpl->insert(0, tp); | |
4700 } | |
4701 else | |
4702 check(TOKrparen); | |
4703 } | |
4704 else | |
4705 { error("(type identifier : specialization) expected following is"); | |
4706 goto Lerr; | |
4707 } | |
4708 e = new IsExp(loc, targ, ident, tok, tspec, tok2, tpl); | |
4709 break; | |
4710 } | |
4711 | |
4712 case TOKassert: | |
4713 { Expression *msg = NULL; | |
4714 | |
4715 nextToken(); | |
4716 check(TOKlparen, "assert"); | |
4717 e = parseAssignExp(); | |
4718 if (token.value == TOKcomma) | |
4719 { nextToken(); | |
4720 msg = parseAssignExp(); | |
4721 } | |
4722 check(TOKrparen); | |
4723 e = new AssertExp(loc, e, msg); | |
4724 break; | |
4725 } | |
4726 | |
4727 case TOKmixin: | |
4728 { | |
4729 nextToken(); | |
4730 check(TOKlparen, "mixin"); | |
4731 e = parseAssignExp(); | |
4732 check(TOKrparen); | |
4733 e = new CompileExp(loc, e); | |
4734 break; | |
4735 } | |
4736 | |
4737 case TOKimport: | |
4738 { | |
4739 nextToken(); | |
4740 check(TOKlparen, "import"); | |
4741 e = parseAssignExp(); | |
4742 check(TOKrparen); | |
4743 e = new FileExp(loc, e); | |
4744 break; | |
4745 } | |
4746 | |
4747 case TOKlparen: | |
4748 if (peekPastParen(&token)->value == TOKlcurly) | |
4749 { // (arguments) { statements... } | |
4750 save = TOKdelegate; | |
4751 goto case_delegate; | |
4752 } | |
4753 // ( expression ) | |
4754 nextToken(); | |
4755 e = parseExpression(); | |
4756 check(loc, TOKrparen); | |
4757 break; | |
4758 | |
4759 case TOKlbracket: | |
4760 { /* Parse array literals and associative array literals: | |
4761 * [ value, value, value ... ] | |
4762 * [ key:value, key:value, key:value ... ] | |
4763 */ | |
4764 Expressions *values = new Expressions(); | |
4765 Expressions *keys = NULL; | |
4766 | |
4767 nextToken(); | |
4768 if (token.value != TOKrbracket) | |
4769 { | |
4770 while (token.value != TOKeof) | |
4771 { | |
4772 Expression *e = parseAssignExp(); | |
4773 if (token.value == TOKcolon && (keys || values->dim == 0)) | |
4774 { nextToken(); | |
4775 if (!keys) | |
4776 keys = new Expressions(); | |
4777 keys->push(e); | |
4778 e = parseAssignExp(); | |
4779 } | |
4780 else if (keys) | |
4781 { error("'key:value' expected for associative array literal"); | |
4782 delete keys; | |
4783 keys = NULL; | |
4784 } | |
4785 values->push(e); | |
4786 if (token.value == TOKrbracket) | |
4787 break; | |
4788 check(TOKcomma); | |
4789 } | |
4790 } | |
4791 check(TOKrbracket); | |
4792 | |
4793 if (keys) | |
4794 e = new AssocArrayLiteralExp(loc, keys, values); | |
4795 else | |
4796 e = new ArrayLiteralExp(loc, values); | |
4797 break; | |
4798 } | |
4799 | |
4800 case TOKlcurly: | |
4801 // { statements... } | |
4802 save = TOKdelegate; | |
4803 goto case_delegate; | |
4804 | |
4805 case TOKfunction: | |
4806 case TOKdelegate: | |
4807 save = token.value; | |
4808 nextToken(); | |
4809 case_delegate: | |
4810 { | |
4811 /* function type(parameters) { body } pure nothrow | |
4812 * delegate type(parameters) { body } pure nothrow | |
4813 * (parameters) { body } | |
4814 * { body } | |
4815 */ | |
4816 Arguments *arguments; | |
4817 int varargs; | |
4818 FuncLiteralDeclaration *fd; | |
4819 Type *t; | |
4820 bool isnothrow = false; | |
4821 bool ispure = false; | |
4822 | |
4823 if (token.value == TOKlcurly) | |
4824 { | |
4825 t = NULL; | |
4826 varargs = 0; | |
4827 arguments = new Arguments(); | |
4828 } | |
4829 else | |
4830 { | |
4831 if (token.value == TOKlparen) | |
4832 t = NULL; | |
4833 else | |
4834 { | |
4835 t = parseBasicType(); | |
4836 t = parseBasicType2(t); // function return type | |
4837 } | |
4838 arguments = parseParameters(&varargs); | |
4839 while (1) | |
4840 { | |
4841 if (token.value == TOKpure) | |
4842 ispure = true; | |
4843 else if (token.value == TOKnothrow) | |
4844 isnothrow = true; | |
4845 else | |
4846 break; | |
4847 nextToken(); | |
4848 } | |
4849 } | |
4850 TypeFunction *tf = new TypeFunction(arguments, t, varargs, linkage); | |
4851 tf->ispure = ispure; | |
4852 tf->isnothrow = isnothrow; | |
4853 fd = new FuncLiteralDeclaration(loc, 0, tf, save, NULL); | |
4854 parseContracts(fd); | |
4855 e = new FuncExp(loc, fd); | |
4856 break; | |
4857 } | |
4858 | |
4859 default: | |
4860 error("expression expected, not '%s'", token.toChars()); | |
4861 Lerr: | |
4862 // Anything for e, as long as it's not NULL | |
4863 e = new IntegerExp(loc, 0, Type::tint32); | |
4864 nextToken(); | |
4865 break; | |
4866 } | |
4867 return e; | |
4868 } | |
4869 | |
4870 Expression *Parser::parsePostExp(Expression *e) | |
4871 { | |
4872 Loc loc; | |
4873 | |
4874 while (1) | |
4875 { | |
4876 loc = this->loc; | |
4877 switch (token.value) | |
4878 { | |
4879 case TOKdot: | |
4880 nextToken(); | |
4881 if (token.value == TOKidentifier) | |
4882 { Identifier *id = token.ident; | |
4883 | |
4884 nextToken(); | |
4885 if (token.value == TOKnot && peekNext() != TOKis) | |
4886 { // identifier!(template-argument-list) | |
4887 TemplateInstance *tempinst = new TemplateInstance(loc, id); | |
4888 nextToken(); | |
4889 if (token.value == TOKlparen) | |
4890 // ident!(template_arguments) | |
4891 tempinst->tiargs = parseTemplateArgumentList(); | |
4892 else | |
4893 // ident!template_argument | |
4894 tempinst->tiargs = parseTemplateArgument(); | |
4895 e = new DotTemplateInstanceExp(loc, e, tempinst); | |
4896 } | |
4897 else | |
4898 e = new DotIdExp(loc, e, id); | |
4899 continue; | |
4900 } | |
4901 else if (token.value == TOKnew) | |
4902 { | |
4903 e = parseNewExp(e); | |
4904 continue; | |
4905 } | |
4906 else | |
4907 error("identifier expected following '.', not '%s'", token.toChars()); | |
4908 break; | |
4909 | |
4910 case TOKplusplus: | |
4911 e = new PostExp(TOKplusplus, loc, e); | |
4912 break; | |
4913 | |
4914 case TOKminusminus: | |
4915 e = new PostExp(TOKminusminus, loc, e); | |
4916 break; | |
4917 | |
4918 case TOKlparen: | |
4919 e = new CallExp(loc, e, parseArguments()); | |
4920 continue; | |
4921 | |
4922 case TOKlbracket: | |
4923 { // array dereferences: | |
4924 // array[index] | |
4925 // array[] | |
4926 // array[lwr .. upr] | |
4927 Expression *index; | |
4928 Expression *upr; | |
4929 | |
4930 inBrackets++; | |
4931 nextToken(); | |
4932 if (token.value == TOKrbracket) | |
4933 { // array[] | |
4934 e = new SliceExp(loc, e, NULL, NULL); | |
4935 nextToken(); | |
4936 } | |
4937 else | |
4938 { | |
4939 index = parseAssignExp(); | |
4940 if (token.value == TOKslice) | |
4941 { // array[lwr .. upr] | |
4942 nextToken(); | |
4943 upr = parseAssignExp(); | |
4944 e = new SliceExp(loc, e, index, upr); | |
4945 } | |
4946 else | |
4947 { // array[index, i2, i3, i4, ...] | |
4948 Expressions *arguments = new Expressions(); | |
4949 arguments->push(index); | |
4950 if (token.value == TOKcomma) | |
4951 { | |
4952 nextToken(); | |
4953 while (1) | |
4954 { Expression *arg; | |
4955 | |
4956 arg = parseAssignExp(); | |
4957 arguments->push(arg); | |
4958 if (token.value == TOKrbracket) | |
4959 break; | |
4960 check(TOKcomma); | |
4961 } | |
4962 } | |
4963 e = new ArrayExp(loc, e, arguments); | |
4964 } | |
4965 check(TOKrbracket); | |
4966 inBrackets--; | |
4967 } | |
4968 continue; | |
4969 } | |
4970 | |
4971 default: | |
4972 return e; | |
4973 } | |
4974 nextToken(); | |
4975 } | |
4976 } | |
4977 | |
4978 Expression *Parser::parseUnaryExp() | |
4979 { Expression *e; | |
4980 Loc loc = this->loc; | |
4981 | |
4982 switch (token.value) | |
4983 { | |
4984 case TOKand: | |
4985 nextToken(); | |
4986 e = parseUnaryExp(); | |
4987 e = new AddrExp(loc, e); | |
4988 break; | |
4989 | |
4990 case TOKplusplus: | |
4991 nextToken(); | |
4992 e = parseUnaryExp(); | |
4993 e = new AddAssignExp(loc, e, new IntegerExp(loc, 1, Type::tint32)); | |
4994 break; | |
4995 | |
4996 case TOKminusminus: | |
4997 nextToken(); | |
4998 e = parseUnaryExp(); | |
4999 e = new MinAssignExp(loc, e, new IntegerExp(loc, 1, Type::tint32)); | |
5000 break; | |
5001 | |
5002 case TOKmul: | |
5003 nextToken(); | |
5004 e = parseUnaryExp(); | |
5005 e = new PtrExp(loc, e); | |
5006 break; | |
5007 | |
5008 case TOKmin: | |
5009 nextToken(); | |
5010 e = parseUnaryExp(); | |
5011 e = new NegExp(loc, e); | |
5012 break; | |
5013 | |
5014 case TOKadd: | |
5015 nextToken(); | |
5016 e = parseUnaryExp(); | |
5017 e = new UAddExp(loc, e); | |
5018 break; | |
5019 | |
5020 case TOKnot: | |
5021 nextToken(); | |
5022 e = parseUnaryExp(); | |
5023 e = new NotExp(loc, e); | |
5024 break; | |
5025 | |
5026 case TOKtilde: | |
5027 nextToken(); | |
5028 e = parseUnaryExp(); | |
5029 e = new ComExp(loc, e); | |
5030 break; | |
5031 | |
5032 case TOKdelete: | |
5033 nextToken(); | |
5034 e = parseUnaryExp(); | |
5035 e = new DeleteExp(loc, e); | |
5036 break; | |
5037 | |
5038 case TOKnew: | |
5039 e = parseNewExp(NULL); | |
5040 break; | |
5041 | |
5042 case TOKcast: // cast(type) expression | |
5043 { Type *t; | |
5044 | |
5045 nextToken(); | |
5046 check(TOKlparen); | |
5047 /* Look for cast(const) and cast(invariant) | |
5048 */ | |
5049 if ((token.value == TOKconst || token.value == TOKinvariant || token.value == TOKimmutable) && | |
5050 peek(&token)->value == TOKrparen) | |
5051 { enum TOK tok = token.value; | |
5052 nextToken(); | |
5053 nextToken(); | |
5054 e = parseUnaryExp(); | |
5055 e = new CastExp(loc, e, tok); | |
5056 } | |
5057 else | |
5058 { | |
5059 t = parseType(); // ( type ) | |
5060 check(TOKrparen); | |
5061 e = parseUnaryExp(); | |
5062 e = new CastExp(loc, e, t); | |
5063 } | |
5064 break; | |
5065 } | |
5066 | |
5067 case TOKlparen: | |
5068 { Token *tk; | |
5069 | |
5070 tk = peek(&token); | |
5071 #if CCASTSYNTAX | |
5072 // If cast | |
5073 if (isDeclaration(tk, 0, TOKrparen, &tk)) | |
5074 { | |
5075 tk = peek(tk); // skip over right parenthesis | |
5076 switch (tk->value) | |
5077 { | |
5078 case TOKnot: | |
5079 tk = peek(tk); | |
5080 if (tk->value == TOKis) // !is | |
5081 break; | |
5082 case TOKdot: | |
5083 case TOKplusplus: | |
5084 case TOKminusminus: | |
5085 case TOKdelete: | |
5086 case TOKnew: | |
5087 case TOKlparen: | |
5088 case TOKidentifier: | |
5089 case TOKthis: | |
5090 case TOKsuper: | |
5091 case TOKint32v: | |
5092 case TOKuns32v: | |
5093 case TOKint64v: | |
5094 case TOKuns64v: | |
5095 case TOKfloat32v: | |
5096 case TOKfloat64v: | |
5097 case TOKfloat80v: | |
5098 case TOKimaginary32v: | |
5099 case TOKimaginary64v: | |
5100 case TOKimaginary80v: | |
5101 case TOKnull: | |
5102 case TOKtrue: | |
5103 case TOKfalse: | |
5104 case TOKcharv: | |
5105 case TOKwcharv: | |
5106 case TOKdcharv: | |
5107 case TOKstring: | |
5108 #if 0 | |
5109 case TOKtilde: | |
5110 case TOKand: | |
5111 case TOKmul: | |
5112 case TOKmin: | |
5113 case TOKadd: | |
5114 #endif | |
5115 case TOKfunction: | |
5116 case TOKdelegate: | |
5117 case TOKtypeof: | |
5118 #if DMDV2 | |
5119 case TOKfile: | |
5120 case TOKline: | |
5121 #endif | |
5122 CASE_BASIC_TYPES: // (type)int.size | |
5123 { // (type) una_exp | |
5124 Type *t; | |
5125 | |
5126 nextToken(); | |
5127 t = parseType(); | |
5128 check(TOKrparen); | |
5129 | |
5130 // if .identifier | |
5131 if (token.value == TOKdot) | |
5132 { | |
5133 nextToken(); | |
5134 if (token.value != TOKidentifier) | |
5135 { error("Identifier expected following (type)."); | |
5136 return NULL; | |
5137 } | |
5138 e = new TypeDotIdExp(loc, t, token.ident); | |
5139 nextToken(); | |
5140 e = parsePostExp(e); | |
5141 } | |
5142 else | |
5143 { | |
5144 e = parseUnaryExp(); | |
5145 e = new CastExp(loc, e, t); | |
5146 error("C style cast illegal, use %s", e->toChars()); | |
5147 } | |
5148 return e; | |
5149 } | |
5150 } | |
5151 } | |
5152 #endif | |
5153 e = parsePrimaryExp(); | |
5154 e = parsePostExp(e); | |
5155 break; | |
5156 } | |
5157 default: | |
5158 e = parsePrimaryExp(); | |
5159 e = parsePostExp(e); | |
5160 break; | |
5161 } | |
5162 assert(e); | |
5163 return e; | |
5164 } | |
5165 | |
5166 Expression *Parser::parseMulExp() | |
5167 { Expression *e; | |
5168 Expression *e2; | |
5169 Loc loc = this->loc; | |
5170 | |
5171 e = parseUnaryExp(); | |
5172 while (1) | |
5173 { | |
5174 switch (token.value) | |
5175 { | |
5176 case TOKmul: nextToken(); e2 = parseUnaryExp(); e = new MulExp(loc,e,e2); continue; | |
5177 case TOKdiv: nextToken(); e2 = parseUnaryExp(); e = new DivExp(loc,e,e2); continue; | |
5178 case TOKmod: nextToken(); e2 = parseUnaryExp(); e = new ModExp(loc,e,e2); continue; | |
5179 | |
5180 default: | |
5181 break; | |
5182 } | |
5183 break; | |
5184 } | |
5185 return e; | |
5186 } | |
5187 | |
5188 Expression *Parser::parseAddExp() | |
5189 { Expression *e; | |
5190 Expression *e2; | |
5191 Loc loc = this->loc; | |
5192 | |
5193 e = parseMulExp(); | |
5194 while (1) | |
5195 { | |
5196 switch (token.value) | |
5197 { | |
5198 case TOKadd: nextToken(); e2 = parseMulExp(); e = new AddExp(loc,e,e2); continue; | |
5199 case TOKmin: nextToken(); e2 = parseMulExp(); e = new MinExp(loc,e,e2); continue; | |
5200 case TOKtilde: nextToken(); e2 = parseMulExp(); e = new CatExp(loc,e,e2); continue; | |
5201 | |
5202 default: | |
5203 break; | |
5204 } | |
5205 break; | |
5206 } | |
5207 return e; | |
5208 } | |
5209 | |
5210 Expression *Parser::parseShiftExp() | |
5211 { Expression *e; | |
5212 Expression *e2; | |
5213 Loc loc = this->loc; | |
5214 | |
5215 e = parseAddExp(); | |
5216 while (1) | |
5217 { | |
5218 switch (token.value) | |
5219 { | |
5220 case TOKshl: nextToken(); e2 = parseAddExp(); e = new ShlExp(loc,e,e2); continue; | |
5221 case TOKshr: nextToken(); e2 = parseAddExp(); e = new ShrExp(loc,e,e2); continue; | |
5222 case TOKushr: nextToken(); e2 = parseAddExp(); e = new UshrExp(loc,e,e2); continue; | |
5223 | |
5224 default: | |
5225 break; | |
5226 } | |
5227 break; | |
5228 } | |
5229 return e; | |
5230 } | |
5231 | |
5232 Expression *Parser::parseRelExp() | |
5233 { Expression *e; | |
5234 Expression *e2; | |
5235 enum TOK op; | |
5236 Loc loc = this->loc; | |
5237 | |
5238 e = parseShiftExp(); | |
5239 while (1) | |
5240 { | |
5241 switch (token.value) | |
5242 { | |
5243 case TOKlt: | |
5244 case TOKle: | |
5245 case TOKgt: | |
5246 case TOKge: | |
5247 case TOKunord: | |
5248 case TOKlg: | |
5249 case TOKleg: | |
5250 case TOKule: | |
5251 case TOKul: | |
5252 case TOKuge: | |
5253 case TOKug: | |
5254 case TOKue: | |
5255 op = token.value; | |
5256 nextToken(); | |
5257 e2 = parseShiftExp(); | |
5258 e = new CmpExp(op, loc, e, e2); | |
5259 continue; | |
5260 | |
5261 case TOKin: | |
5262 nextToken(); | |
5263 e2 = parseShiftExp(); | |
5264 e = new InExp(loc, e, e2); | |
5265 continue; | |
5266 | |
5267 default: | |
5268 break; | |
5269 } | |
5270 break; | |
5271 } | |
5272 return e; | |
5273 } | |
5274 | |
5275 Expression *Parser::parseEqualExp() | |
5276 { Expression *e; | |
5277 Expression *e2; | |
5278 Token *t; | |
5279 Loc loc = this->loc; | |
5280 | |
5281 e = parseRelExp(); | |
5282 while (1) | |
5283 { enum TOK value = token.value; | |
5284 | |
5285 switch (value) | |
5286 { | |
5287 case TOKequal: | |
5288 case TOKnotequal: | |
5289 nextToken(); | |
5290 e2 = parseRelExp(); | |
5291 e = new EqualExp(value, loc, e, e2); | |
5292 continue; | |
5293 | |
5294 case TOKidentity: | |
5295 error("'===' is no longer legal, use 'is' instead"); | |
5296 goto L1; | |
5297 | |
5298 case TOKnotidentity: | |
5299 error("'!==' is no longer legal, use '!is' instead"); | |
5300 goto L1; | |
5301 | |
5302 case TOKis: | |
5303 value = TOKidentity; | |
5304 goto L1; | |
5305 | |
5306 case TOKnot: | |
5307 // Attempt to identify '!is' | |
5308 t = peek(&token); | |
5309 if (t->value != TOKis) | |
5310 break; | |
5311 nextToken(); | |
5312 value = TOKnotidentity; | |
5313 goto L1; | |
5314 | |
5315 L1: | |
5316 nextToken(); | |
5317 e2 = parseRelExp(); | |
5318 e = new IdentityExp(value, loc, e, e2); | |
5319 continue; | |
5320 | |
5321 default: | |
5322 break; | |
5323 } | |
5324 break; | |
5325 } | |
5326 return e; | |
5327 } | |
5328 | |
5329 Expression *Parser::parseCmpExp() | |
5330 { Expression *e; | |
5331 Expression *e2; | |
5332 Token *t; | |
5333 Loc loc = this->loc; | |
5334 | |
5335 e = parseShiftExp(); | |
5336 enum TOK op = token.value; | |
5337 | |
5338 switch (op) | |
5339 { | |
5340 case TOKequal: | |
5341 case TOKnotequal: | |
5342 nextToken(); | |
5343 e2 = parseShiftExp(); | |
5344 e = new EqualExp(op, loc, e, e2); | |
5345 break; | |
5346 | |
5347 case TOKis: | |
5348 op = TOKidentity; | |
5349 goto L1; | |
5350 | |
5351 case TOKnot: | |
5352 // Attempt to identify '!is' | |
5353 t = peek(&token); | |
5354 if (t->value != TOKis) | |
5355 break; | |
5356 nextToken(); | |
5357 op = TOKnotidentity; | |
5358 goto L1; | |
5359 | |
5360 L1: | |
5361 nextToken(); | |
5362 e2 = parseShiftExp(); | |
5363 e = new IdentityExp(op, loc, e, e2); | |
5364 break; | |
5365 | |
5366 case TOKlt: | |
5367 case TOKle: | |
5368 case TOKgt: | |
5369 case TOKge: | |
5370 case TOKunord: | |
5371 case TOKlg: | |
5372 case TOKleg: | |
5373 case TOKule: | |
5374 case TOKul: | |
5375 case TOKuge: | |
5376 case TOKug: | |
5377 case TOKue: | |
5378 nextToken(); | |
5379 e2 = parseShiftExp(); | |
5380 e = new CmpExp(op, loc, e, e2); | |
5381 break; | |
5382 | |
5383 case TOKin: | |
5384 nextToken(); | |
5385 e2 = parseShiftExp(); | |
5386 e = new InExp(loc, e, e2); | |
5387 break; | |
5388 | |
5389 default: | |
5390 break; | |
5391 } | |
5392 return e; | |
5393 } | |
5394 | |
5395 Expression *Parser::parseAndExp() | |
5396 { Expression *e; | |
5397 Expression *e2; | |
5398 Loc loc = this->loc; | |
5399 | |
5400 if (global.params.Dversion == 1) | |
5401 { | |
5402 e = parseEqualExp(); | |
5403 while (token.value == TOKand) | |
5404 { | |
5405 nextToken(); | |
5406 e2 = parseEqualExp(); | |
5407 e = new AndExp(loc,e,e2); | |
5408 loc = this->loc; | |
5409 } | |
5410 } | |
5411 else | |
5412 { | |
5413 e = parseCmpExp(); | |
5414 while (token.value == TOKand) | |
5415 { | |
5416 nextToken(); | |
5417 e2 = parseCmpExp(); | |
5418 e = new AndExp(loc,e,e2); | |
5419 loc = this->loc; | |
5420 } | |
5421 } | |
5422 return e; | |
5423 } | |
5424 | |
5425 Expression *Parser::parseXorExp() | |
5426 { Expression *e; | |
5427 Expression *e2; | |
5428 Loc loc = this->loc; | |
5429 | |
5430 e = parseAndExp(); | |
5431 while (token.value == TOKxor) | |
5432 { | |
5433 nextToken(); | |
5434 e2 = parseAndExp(); | |
5435 e = new XorExp(loc, e, e2); | |
5436 } | |
5437 return e; | |
5438 } | |
5439 | |
5440 Expression *Parser::parseOrExp() | |
5441 { Expression *e; | |
5442 Expression *e2; | |
5443 Loc loc = this->loc; | |
5444 | |
5445 e = parseXorExp(); | |
5446 while (token.value == TOKor) | |
5447 { | |
5448 nextToken(); | |
5449 e2 = parseXorExp(); | |
5450 e = new OrExp(loc, e, e2); | |
5451 } | |
5452 return e; | |
5453 } | |
5454 | |
5455 Expression *Parser::parseAndAndExp() | |
5456 { Expression *e; | |
5457 Expression *e2; | |
5458 Loc loc = this->loc; | |
5459 | |
5460 e = parseOrExp(); | |
5461 while (token.value == TOKandand) | |
5462 { | |
5463 nextToken(); | |
5464 e2 = parseOrExp(); | |
5465 e = new AndAndExp(loc, e, e2); | |
5466 } | |
5467 return e; | |
5468 } | |
5469 | |
5470 Expression *Parser::parseOrOrExp() | |
5471 { Expression *e; | |
5472 Expression *e2; | |
5473 Loc loc = this->loc; | |
5474 | |
5475 e = parseAndAndExp(); | |
5476 while (token.value == TOKoror) | |
5477 { | |
5478 nextToken(); | |
5479 e2 = parseAndAndExp(); | |
5480 e = new OrOrExp(loc, e, e2); | |
5481 } | |
5482 return e; | |
5483 } | |
5484 | |
5485 Expression *Parser::parseCondExp() | |
5486 { Expression *e; | |
5487 Expression *e1; | |
5488 Expression *e2; | |
5489 Loc loc = this->loc; | |
5490 | |
5491 e = parseOrOrExp(); | |
5492 if (token.value == TOKquestion) | |
5493 { | |
5494 nextToken(); | |
5495 e1 = parseExpression(); | |
5496 check(TOKcolon); | |
5497 e2 = parseCondExp(); | |
5498 e = new CondExp(loc, e, e1, e2); | |
5499 } | |
5500 return e; | |
5501 } | |
5502 | |
5503 Expression *Parser::parseAssignExp() | |
5504 { Expression *e; | |
5505 Expression *e2; | |
5506 Loc loc; | |
5507 | |
5508 e = parseCondExp(); | |
5509 while (1) | |
5510 { | |
5511 loc = this->loc; | |
5512 switch (token.value) | |
5513 { | |
5514 #define X(tok,ector) \ | |
5515 case tok: nextToken(); e2 = parseAssignExp(); e = new ector(loc,e,e2); continue; | |
5516 | |
5517 X(TOKassign, AssignExp); | |
5518 X(TOKaddass, AddAssignExp); | |
5519 X(TOKminass, MinAssignExp); | |
5520 X(TOKmulass, MulAssignExp); | |
5521 X(TOKdivass, DivAssignExp); | |
5522 X(TOKmodass, ModAssignExp); | |
5523 X(TOKandass, AndAssignExp); | |
5524 X(TOKorass, OrAssignExp); | |
5525 X(TOKxorass, XorAssignExp); | |
5526 X(TOKshlass, ShlAssignExp); | |
5527 X(TOKshrass, ShrAssignExp); | |
5528 X(TOKushrass, UshrAssignExp); | |
5529 X(TOKcatass, CatAssignExp); | |
5530 | |
5531 #undef X | |
5532 default: | |
5533 break; | |
5534 } | |
5535 break; | |
5536 } | |
5537 return e; | |
5538 } | |
5539 | |
5540 Expression *Parser::parseExpression() | |
5541 { Expression *e; | |
5542 Expression *e2; | |
5543 Loc loc = this->loc; | |
5544 | |
5545 //printf("Parser::parseExpression() loc = %d\n", loc.linnum); | |
5546 e = parseAssignExp(); | |
5547 while (token.value == TOKcomma) | |
5548 { | |
5549 nextToken(); | |
5550 e2 = parseAssignExp(); | |
5551 e = new CommaExp(loc, e, e2); | |
5552 loc = this->loc; | |
5553 } | |
5554 return e; | |
5555 } | |
5556 | |
5557 | |
5558 /************************* | |
5559 * Collect argument list. | |
5560 * Assume current token is '(' or '['. | |
5561 */ | |
5562 | |
5563 Expressions *Parser::parseArguments() | |
5564 { // function call | |
5565 Expressions *arguments; | |
5566 Expression *arg; | |
5567 enum TOK endtok; | |
5568 | |
5569 arguments = new Expressions(); | |
5570 if (token.value == TOKlbracket) | |
5571 endtok = TOKrbracket; | |
5572 else | |
5573 endtok = TOKrparen; | |
5574 | |
5575 { | |
5576 nextToken(); | |
5577 if (token.value != endtok) | |
5578 { | |
5579 while (1) | |
5580 { | |
5581 arg = parseAssignExp(); | |
5582 arguments->push(arg); | |
5583 if (token.value == endtok) | |
5584 break; | |
5585 check(TOKcomma); | |
5586 } | |
5587 } | |
5588 check(endtok); | |
5589 } | |
5590 return arguments; | |
5591 } | |
5592 | |
5593 /******************************************* | |
5594 */ | |
5595 | |
5596 Expression *Parser::parseNewExp(Expression *thisexp) | |
5597 { Type *t; | |
5598 Expressions *newargs; | |
5599 Expressions *arguments = NULL; | |
5600 Expression *e; | |
5601 Loc loc = this->loc; | |
5602 | |
5603 nextToken(); | |
5604 newargs = NULL; | |
5605 if (token.value == TOKlparen) | |
5606 { | |
5607 newargs = parseArguments(); | |
5608 } | |
5609 | |
5610 // An anonymous nested class starts with "class" | |
5611 if (token.value == TOKclass) | |
5612 { | |
5613 nextToken(); | |
5614 if (token.value == TOKlparen) | |
5615 arguments = parseArguments(); | |
5616 | |
5617 BaseClasses *baseclasses = NULL; | |
5618 if (token.value != TOKlcurly) | |
5619 baseclasses = parseBaseClasses(); | |
5620 | |
5621 Identifier *id = NULL; | |
5622 ClassDeclaration *cd = new ClassDeclaration(loc, id, baseclasses); | |
5623 | |
5624 if (token.value != TOKlcurly) | |
5625 { error("{ members } expected for anonymous class"); | |
5626 cd->members = NULL; | |
5627 } | |
5628 else | |
5629 { | |
5630 nextToken(); | |
5631 Array *decl = parseDeclDefs(0); | |
5632 if (token.value != TOKrcurly) | |
5633 error("class member expected"); | |
5634 nextToken(); | |
5635 cd->members = decl; | |
5636 } | |
5637 | |
5638 e = new NewAnonClassExp(loc, thisexp, newargs, cd, arguments); | |
5639 | |
5640 return e; | |
5641 } | |
5642 | |
5643 t = parseBasicType(); | |
5644 t = parseBasicType2(t); | |
5645 if (t->ty == Taarray) | |
5646 { TypeAArray *taa = (TypeAArray *)t; | |
5647 Type *index = taa->index; | |
5648 | |
5649 Expression *e = index->toExpression(); | |
5650 if (e) | |
5651 { arguments = new Expressions(); | |
5652 arguments->push(e); | |
5653 t = new TypeDArray(taa->next); | |
5654 } | |
5655 else | |
5656 { | |
5657 error("need size of rightmost array, not type %s", index->toChars()); | |
5658 return new NullExp(loc); | |
5659 } | |
5660 } | |
5661 else if (t->ty == Tsarray) | |
5662 { | |
5663 TypeSArray *tsa = (TypeSArray *)t; | |
5664 Expression *e = tsa->dim; | |
5665 | |
5666 arguments = new Expressions(); | |
5667 arguments->push(e); | |
5668 t = new TypeDArray(tsa->next); | |
5669 } | |
5670 else if (token.value == TOKlparen) | |
5671 { | |
5672 arguments = parseArguments(); | |
5673 } | |
5674 e = new NewExp(loc, thisexp, newargs, t, arguments); | |
5675 return e; | |
5676 } | |
5677 | |
5678 /********************************************** | |
5679 */ | |
5680 | |
5681 void Parser::addComment(Dsymbol *s, unsigned char *blockComment) | |
5682 { | |
5683 s->addComment(combineComments(blockComment, token.lineComment)); | |
5684 token.lineComment = NULL; | |
5685 } | |
5686 | |
5687 | |
5688 /********************************* ***************************/ | |
5689 |