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b4c522fa IB |
1 | |
2 | /* Compiler implementation of the D programming language | |
8e788ac6 | 3 | * Copyright (C) 1999-2020 by The D Language Foundation, All Rights Reserved |
b4c522fa IB |
4 | * written by Walter Bright |
5 | * http://www.digitalmars.com | |
6 | * Distributed under the Boost Software License, Version 1.0. | |
7 | * http://www.boost.org/LICENSE_1_0.txt | |
8 | * https://github.com/D-Programming-Language/dmd/blob/master/src/parse.c | |
9 | */ | |
10 | ||
11 | // This is the D parser | |
12 | ||
f9ab59ff | 13 | #include "root/dsystem.h" // strlen(),memcpy() |
b4c522fa | 14 | #include "root/rmem.h" |
f9ab59ff | 15 | |
b4c522fa IB |
16 | #include "mars.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 | #include "aliasthis.h" | |
36 | #include "nspace.h" | |
37 | #include "hdrgen.h" | |
38 | ||
39 | Expression *typeToExpression(Type *t); | |
40 | ||
41 | // Support C cast syntax: | |
42 | // (type)(expression) | |
43 | #define CCASTSYNTAX 1 | |
44 | ||
45 | // Support postfix C array declarations, such as | |
46 | // int a[3][4]; | |
47 | #define CARRAYDECL 1 | |
48 | ||
49 | Parser::Parser(Module *module, const utf8_t *base, size_t length, bool doDocComment) | |
50 | : Lexer(module ? module->srcfile->toChars() : NULL, base, 0, length, doDocComment, false) | |
51 | { | |
52 | //printf("Parser::Parser()\n"); | |
53 | mod = module; | |
54 | md = NULL; | |
55 | linkage = LINKd; | |
56 | endloc = Loc(); | |
57 | inBrackets = 0; | |
58 | lookingForElse = Loc(); | |
59 | //nextToken(); // start up the scanner | |
60 | } | |
61 | ||
62 | /********************* | |
63 | * Use this constructor for string mixins. | |
64 | * Input: | |
65 | * loc location in source file of mixin | |
66 | */ | |
67 | Parser::Parser(Loc loc, Module *module, const utf8_t *base, size_t length, bool doDocComment) | |
68 | : Lexer(module ? module->srcfile->toChars() : NULL, base, 0, length, doDocComment, false) | |
69 | { | |
70 | //printf("Parser::Parser()\n"); | |
71 | scanloc = loc; | |
72 | ||
b4c522fa IB |
73 | if (loc.filename) |
74 | { | |
75 | /* Create a pseudo-filename for the mixin string, as it may not even exist | |
76 | * in the source file. | |
77 | */ | |
78 | char *filename = (char *)mem.xmalloc(strlen(loc.filename) + 7 + sizeof(loc.linnum) * 3 + 1); | |
79 | sprintf(filename, "%s-mixin-%d", loc.filename, (int)loc.linnum); | |
80 | scanloc.filename = filename; | |
81 | } | |
b4c522fa IB |
82 | |
83 | mod = module; | |
84 | md = NULL; | |
85 | linkage = LINKd; | |
86 | endloc = Loc(); | |
87 | inBrackets = 0; | |
88 | lookingForElse = Loc(); | |
89 | //nextToken(); // start up the scanner | |
90 | } | |
91 | ||
92 | Dsymbols *Parser::parseModule() | |
93 | { | |
94 | const utf8_t *comment = token.blockComment; | |
95 | bool isdeprecated = false; | |
96 | Expression *msg = NULL; | |
97 | Expressions *udas = NULL; | |
98 | Dsymbols *decldefs; | |
99 | ||
100 | Token *tk; | |
101 | if (skipAttributes(&token, &tk) && tk->value == TOKmodule) | |
102 | { | |
103 | while (token.value != TOKmodule) | |
104 | { | |
105 | switch (token.value) | |
106 | { | |
107 | case TOKdeprecated: | |
108 | { | |
109 | // deprecated (...) module ... | |
110 | if (isdeprecated) | |
111 | { | |
112 | error("there is only one deprecation attribute allowed for module declaration"); | |
113 | } | |
114 | else | |
115 | { | |
116 | isdeprecated = true; | |
117 | } | |
118 | nextToken(); | |
119 | if (token.value == TOKlparen) | |
120 | { | |
121 | check(TOKlparen); | |
122 | msg = parseAssignExp(); | |
123 | check(TOKrparen); | |
124 | } | |
125 | break; | |
126 | } | |
127 | case TOKat: | |
128 | { | |
129 | Expressions *exps = NULL; | |
130 | StorageClass stc = parseAttribute(&exps); | |
131 | ||
132 | if (stc == STCproperty || stc == STCnogc || stc == STCdisable || | |
133 | stc == STCsafe || stc == STCtrusted || stc == STCsystem) | |
134 | { | |
135 | error("@%s attribute for module declaration is not supported", token.toChars()); | |
136 | } | |
137 | else | |
138 | { | |
139 | udas = UserAttributeDeclaration::concat(udas, exps); | |
140 | } | |
141 | if (stc) | |
142 | nextToken(); | |
143 | break; | |
144 | } | |
145 | default: | |
146 | { | |
147 | error("'module' expected instead of %s", token.toChars()); | |
148 | nextToken(); | |
149 | break; | |
150 | } | |
151 | } | |
152 | } | |
153 | } | |
154 | ||
155 | if (udas) | |
156 | { | |
157 | Dsymbols *a = new Dsymbols(); | |
158 | UserAttributeDeclaration *udad = new UserAttributeDeclaration(udas, a); | |
159 | mod->userAttribDecl = udad; | |
160 | } | |
161 | ||
162 | // ModuleDeclation leads off | |
163 | if (token.value == TOKmodule) | |
164 | { | |
165 | Loc loc = token.loc; | |
166 | ||
167 | nextToken(); | |
168 | if (token.value != TOKidentifier) | |
169 | { | |
170 | error("identifier expected following module"); | |
171 | goto Lerr; | |
172 | } | |
173 | else | |
174 | { | |
175 | Identifiers *a = NULL; | |
176 | Identifier *id; | |
177 | ||
178 | id = token.ident; | |
179 | while (nextToken() == TOKdot) | |
180 | { | |
181 | if (!a) | |
182 | a = new Identifiers(); | |
183 | a->push(id); | |
184 | nextToken(); | |
185 | if (token.value != TOKidentifier) | |
186 | { | |
187 | error("identifier expected following package"); | |
188 | goto Lerr; | |
189 | } | |
190 | id = token.ident; | |
191 | } | |
192 | ||
193 | md = new ModuleDeclaration(loc, a, id); | |
194 | md->isdeprecated = isdeprecated; | |
195 | md->msg = msg; | |
196 | ||
197 | if (token.value != TOKsemicolon) | |
198 | error("';' expected following module declaration instead of %s", token.toChars()); | |
199 | nextToken(); | |
200 | addComment(mod, comment); | |
201 | } | |
202 | } | |
203 | ||
204 | decldefs = parseDeclDefs(0); | |
205 | if (token.value != TOKeof) | |
206 | { | |
207 | error(token.loc, "unrecognized declaration"); | |
208 | goto Lerr; | |
209 | } | |
210 | return decldefs; | |
211 | ||
212 | Lerr: | |
213 | while (token.value != TOKsemicolon && token.value != TOKeof) | |
214 | nextToken(); | |
215 | nextToken(); | |
216 | return new Dsymbols(); | |
217 | } | |
218 | ||
219 | struct PrefixAttributes | |
220 | { | |
221 | StorageClass storageClass; | |
222 | Expression *depmsg; | |
223 | LINK link; | |
224 | Prot protection; | |
225 | bool setAlignment; | |
226 | Expression *ealign; | |
227 | Expressions *udas; | |
228 | const utf8_t *comment; | |
229 | ||
230 | PrefixAttributes() | |
231 | : storageClass(STCundefined), | |
232 | depmsg(NULL), | |
233 | link(LINKdefault), | |
0a2ee409 | 234 | protection(Prot::undefined), |
b4c522fa IB |
235 | setAlignment(false), |
236 | ealign(NULL), | |
237 | udas(NULL), | |
238 | comment(NULL) | |
239 | { | |
240 | } | |
241 | }; | |
242 | ||
243 | Dsymbols *Parser::parseDeclDefs(int once, Dsymbol **pLastDecl, PrefixAttributes *pAttrs) | |
244 | { | |
245 | Dsymbol *lastDecl = NULL; // used to link unittest to its previous declaration | |
246 | if (!pLastDecl) | |
247 | pLastDecl = &lastDecl; | |
248 | ||
249 | LINK linksave = linkage; // save global state | |
250 | ||
251 | //printf("Parser::parseDeclDefs()\n"); | |
252 | Dsymbols *decldefs = new Dsymbols(); | |
253 | do | |
254 | { | |
255 | // parse result | |
256 | Dsymbol *s = NULL; | |
257 | Dsymbols *a = NULL; | |
258 | ||
259 | PrefixAttributes attrs; | |
260 | if (!once || !pAttrs) | |
261 | { | |
262 | pAttrs = &attrs; | |
263 | pAttrs->comment = token.blockComment; | |
264 | } | |
0a2ee409 | 265 | Prot::Kind prot; |
b4c522fa IB |
266 | StorageClass stc; |
267 | Condition *condition; | |
268 | ||
269 | linkage = linksave; | |
270 | ||
271 | switch (token.value) | |
272 | { | |
273 | case TOKenum: | |
274 | { | |
275 | /* Determine if this is a manifest constant declaration, | |
276 | * or a conventional enum. | |
277 | */ | |
278 | Token *t = peek(&token); | |
279 | if (t->value == TOKlcurly || t->value == TOKcolon) | |
280 | s = parseEnum(); | |
281 | else if (t->value != TOKidentifier) | |
282 | goto Ldeclaration; | |
283 | else | |
284 | { | |
285 | t = peek(t); | |
286 | if (t->value == TOKlcurly || t->value == TOKcolon || | |
287 | t->value == TOKsemicolon) | |
288 | s = parseEnum(); | |
289 | else | |
290 | goto Ldeclaration; | |
291 | } | |
292 | break; | |
293 | } | |
294 | ||
295 | case TOKimport: | |
296 | a = parseImport(); | |
297 | // keep pLastDecl | |
298 | break; | |
299 | ||
300 | case TOKtemplate: | |
301 | s = (Dsymbol *)parseTemplateDeclaration(); | |
302 | break; | |
303 | ||
304 | case TOKmixin: | |
305 | { | |
306 | Loc loc = token.loc; | |
307 | switch (peekNext()) | |
308 | { | |
309 | case TOKlparen: | |
310 | { | |
311 | // mixin(string) | |
312 | nextToken(); | |
313 | check(TOKlparen, "mixin"); | |
314 | Expression *e = parseAssignExp(); | |
315 | check(TOKrparen); | |
316 | check(TOKsemicolon); | |
317 | s = new CompileDeclaration(loc, e); | |
318 | break; | |
319 | } | |
320 | case TOKtemplate: | |
321 | // mixin template | |
322 | nextToken(); | |
323 | s = (Dsymbol *)parseTemplateDeclaration(true); | |
324 | break; | |
325 | ||
326 | default: | |
327 | s = parseMixin(); | |
328 | break; | |
329 | } | |
330 | break; | |
331 | } | |
332 | ||
333 | case TOKwchar: case TOKdchar: | |
334 | case TOKbool: case TOKchar: | |
335 | case TOKint8: case TOKuns8: | |
336 | case TOKint16: case TOKuns16: | |
337 | case TOKint32: case TOKuns32: | |
338 | case TOKint64: case TOKuns64: | |
339 | case TOKint128: case TOKuns128: | |
340 | case TOKfloat32: case TOKfloat64: case TOKfloat80: | |
341 | case TOKimaginary32: case TOKimaginary64: case TOKimaginary80: | |
342 | case TOKcomplex32: case TOKcomplex64: case TOKcomplex80: | |
343 | case TOKvoid: | |
344 | case TOKalias: | |
345 | case TOKidentifier: | |
346 | case TOKsuper: | |
347 | case TOKtypeof: | |
348 | case TOKdot: | |
349 | case TOKvector: | |
350 | case TOKstruct: | |
351 | case TOKunion: | |
352 | case TOKclass: | |
353 | case TOKinterface: | |
5b74dd0a | 354 | case TOKtraits: |
b4c522fa IB |
355 | Ldeclaration: |
356 | a = parseDeclarations(false, pAttrs, pAttrs->comment); | |
2cbc99d1 IB |
357 | if (a && a->length) |
358 | *pLastDecl = (*a)[a->length-1]; | |
b4c522fa IB |
359 | break; |
360 | ||
361 | case TOKthis: | |
362 | if (peekNext() == TOKdot) | |
363 | goto Ldeclaration; | |
364 | else | |
365 | s = parseCtor(pAttrs); | |
366 | break; | |
367 | ||
368 | case TOKtilde: | |
369 | s = parseDtor(pAttrs); | |
370 | break; | |
371 | ||
372 | case TOKinvariant: | |
373 | { | |
374 | Token *t = peek(&token); | |
375 | if ((t->value == TOKlparen && peek(t)->value == TOKrparen) || | |
376 | t->value == TOKlcurly) | |
377 | { | |
378 | // invariant {} | |
379 | // invariant() {} | |
380 | s = parseInvariant(pAttrs); | |
381 | } | |
382 | else | |
383 | { | |
384 | error("invariant body expected, not '%s'", token.toChars()); | |
385 | goto Lerror; | |
386 | } | |
387 | break; | |
388 | } | |
389 | ||
390 | case TOKunittest: | |
391 | if (global.params.useUnitTests || global.params.doDocComments || global.params.doHdrGeneration) | |
392 | { | |
393 | s = parseUnitTest(pAttrs); | |
394 | if (*pLastDecl) | |
395 | (*pLastDecl)->ddocUnittest = (UnitTestDeclaration *)s; | |
396 | } | |
397 | else | |
398 | { | |
399 | // Skip over unittest block by counting { } | |
400 | Loc loc = token.loc; | |
401 | int braces = 0; | |
402 | while (1) | |
403 | { | |
404 | nextToken(); | |
405 | switch (token.value) | |
406 | { | |
407 | case TOKlcurly: | |
408 | ++braces; | |
409 | continue; | |
410 | ||
411 | case TOKrcurly: | |
412 | if (--braces) | |
413 | continue; | |
414 | nextToken(); | |
415 | break; | |
416 | ||
417 | case TOKeof: | |
418 | /* { */ | |
419 | error(loc, "closing } of unittest not found before end of file"); | |
420 | goto Lerror; | |
421 | ||
422 | default: | |
423 | continue; | |
424 | } | |
425 | break; | |
426 | } | |
427 | // Workaround 14894. Add an empty unittest declaration to keep | |
428 | // the number of symbols in this scope independent of -unittest. | |
429 | s = new UnitTestDeclaration(loc, token.loc, STCundefined, NULL); | |
430 | } | |
431 | break; | |
432 | ||
433 | case TOKnew: | |
434 | s = parseNew(pAttrs); | |
435 | break; | |
436 | ||
437 | case TOKdelete: | |
438 | s = parseDelete(pAttrs); | |
439 | break; | |
440 | ||
441 | case TOKcolon: | |
442 | case TOKlcurly: | |
443 | error("declaration expected, not '%s'",token.toChars()); | |
444 | goto Lerror; | |
445 | ||
446 | case TOKrcurly: | |
447 | case TOKeof: | |
448 | if (once) | |
449 | error("declaration expected, not '%s'", token.toChars()); | |
450 | return decldefs; | |
451 | ||
452 | case TOKstatic: | |
453 | { | |
454 | TOK next = peekNext(); | |
455 | if (next == TOKthis) | |
456 | s = parseStaticCtor(pAttrs); | |
457 | else if (next == TOKtilde) | |
458 | s = parseStaticDtor(pAttrs); | |
459 | else if (next == TOKassert) | |
460 | s = parseStaticAssert(); | |
461 | else if (next == TOKif) | |
462 | { | |
463 | condition = parseStaticIfCondition(); | |
464 | Dsymbols *athen; | |
465 | if (token.value == TOKcolon) | |
466 | athen = parseBlock(pLastDecl); | |
467 | else | |
468 | { | |
469 | Loc lookingForElseSave = lookingForElse; | |
470 | lookingForElse = token.loc; | |
471 | athen = parseBlock(pLastDecl); | |
472 | lookingForElse = lookingForElseSave; | |
473 | } | |
474 | Dsymbols *aelse = NULL; | |
475 | if (token.value == TOKelse) | |
476 | { | |
477 | Loc elseloc = token.loc; | |
478 | nextToken(); | |
479 | aelse = parseBlock(pLastDecl); | |
480 | checkDanglingElse(elseloc); | |
481 | } | |
482 | s = new StaticIfDeclaration(condition, athen, aelse); | |
483 | } | |
484 | else if (next == TOKimport) | |
485 | { | |
486 | a = parseImport(); | |
487 | // keep pLastDecl | |
488 | } | |
5b74dd0a IB |
489 | else if (next == TOKforeach || next == TOKforeach_reverse) |
490 | { | |
491 | s = parseForeachStaticDecl(token.loc, pLastDecl); | |
492 | } | |
b4c522fa IB |
493 | else |
494 | { | |
495 | stc = STCstatic; | |
496 | goto Lstc; | |
497 | } | |
498 | break; | |
499 | } | |
500 | ||
501 | case TOKconst: | |
502 | if (peekNext() == TOKlparen) | |
503 | goto Ldeclaration; | |
504 | stc = STCconst; | |
505 | goto Lstc; | |
506 | ||
507 | case TOKimmutable: | |
508 | if (peekNext() == TOKlparen) | |
509 | goto Ldeclaration; | |
510 | stc = STCimmutable; | |
511 | goto Lstc; | |
512 | ||
513 | case TOKshared: | |
514 | { | |
515 | TOK next = peekNext(); | |
516 | if (next == TOKlparen) | |
517 | goto Ldeclaration; | |
518 | if (next == TOKstatic) | |
519 | { | |
520 | TOK next2 = peekNext2(); | |
521 | if (next2 == TOKthis) | |
522 | { | |
523 | s = parseSharedStaticCtor(pAttrs); | |
524 | break; | |
525 | } | |
526 | if (next2 == TOKtilde) | |
527 | { | |
528 | s = parseSharedStaticDtor(pAttrs); | |
529 | break; | |
530 | } | |
531 | } | |
532 | stc = STCshared; | |
533 | goto Lstc; | |
534 | } | |
535 | ||
536 | case TOKwild: | |
537 | if (peekNext() == TOKlparen) | |
538 | goto Ldeclaration; | |
539 | stc = STCwild; | |
540 | goto Lstc; | |
541 | ||
542 | case TOKfinal: stc = STCfinal; goto Lstc; | |
543 | case TOKauto: stc = STCauto; goto Lstc; | |
544 | case TOKscope: stc = STCscope; goto Lstc; | |
545 | case TOKoverride: stc = STCoverride; goto Lstc; | |
546 | case TOKabstract: stc = STCabstract; goto Lstc; | |
547 | case TOKsynchronized: stc = STCsynchronized; goto Lstc; | |
548 | case TOKnothrow: stc = STCnothrow; goto Lstc; | |
549 | case TOKpure: stc = STCpure; goto Lstc; | |
550 | case TOKref: stc = STCref; goto Lstc; | |
551 | case TOKgshared: stc = STCgshared; goto Lstc; | |
552 | //case TOKmanifest: stc = STCmanifest; goto Lstc; | |
553 | case TOKat: | |
554 | { | |
555 | Expressions *exps = NULL; | |
556 | stc = parseAttribute(&exps); | |
557 | if (stc) | |
558 | goto Lstc; // it's a predefined attribute | |
559 | // no redundant/conflicting check for UDAs | |
560 | pAttrs->udas = UserAttributeDeclaration::concat(pAttrs->udas, exps); | |
561 | goto Lautodecl; | |
562 | } | |
563 | Lstc: | |
564 | pAttrs->storageClass = appendStorageClass(pAttrs->storageClass, stc); | |
565 | nextToken(); | |
566 | ||
567 | Lautodecl: | |
568 | Token *tk; | |
569 | ||
570 | /* Look for auto initializers: | |
571 | * storage_class identifier = initializer; | |
572 | * storage_class identifier(...) = initializer; | |
573 | */ | |
574 | if (token.value == TOKidentifier && | |
575 | skipParensIf(peek(&token), &tk) && | |
576 | tk->value == TOKassign) | |
577 | { | |
578 | a = parseAutoDeclarations(pAttrs->storageClass, pAttrs->comment); | |
579 | pAttrs->storageClass = STCundefined; | |
2cbc99d1 IB |
580 | if (a && a->length) |
581 | *pLastDecl = (*a)[a->length-1]; | |
b4c522fa IB |
582 | if (pAttrs->udas) |
583 | { | |
584 | s = new UserAttributeDeclaration(pAttrs->udas, a); | |
585 | pAttrs->udas = NULL; | |
586 | } | |
587 | break; | |
588 | } | |
589 | ||
590 | /* Look for return type inference for template functions. | |
591 | */ | |
592 | if (token.value == TOKidentifier && skipParens(peek(&token), &tk) && skipAttributes(tk, &tk) && | |
593 | (tk->value == TOKlparen || tk->value == TOKlcurly || tk->value == TOKin || | |
594 | tk->value == TOKout || tk->value == TOKdo || | |
595 | (tk->value == TOKidentifier && tk->ident == Id::_body)) | |
596 | ) | |
597 | { | |
598 | a = parseDeclarations(true, pAttrs, pAttrs->comment); | |
2cbc99d1 IB |
599 | if (a && a->length) |
600 | *pLastDecl = (*a)[a->length-1]; | |
b4c522fa IB |
601 | if (pAttrs->udas) |
602 | { | |
603 | s = new UserAttributeDeclaration(pAttrs->udas, a); | |
604 | pAttrs->udas = NULL; | |
605 | } | |
606 | break; | |
607 | } | |
608 | ||
609 | a = parseBlock(pLastDecl, pAttrs); | |
610 | if (pAttrs->storageClass != STCundefined) | |
611 | { | |
612 | s = new StorageClassDeclaration(pAttrs->storageClass, a); | |
613 | pAttrs->storageClass = STCundefined; | |
614 | } | |
615 | if (pAttrs->udas) | |
616 | { | |
617 | if (s) | |
618 | { | |
619 | a = new Dsymbols(); | |
620 | a->push(s); | |
621 | } | |
622 | s = new UserAttributeDeclaration(pAttrs->udas, a); | |
623 | pAttrs->udas = NULL; | |
624 | } | |
625 | break; | |
626 | ||
627 | case TOKdeprecated: | |
628 | { | |
629 | if (peek(&token)->value != TOKlparen) | |
630 | { | |
631 | stc = STCdeprecated; | |
632 | goto Lstc; | |
633 | } | |
634 | nextToken(); | |
635 | check(TOKlparen); | |
636 | Expression *e = parseAssignExp(); | |
637 | check(TOKrparen); | |
638 | if (pAttrs->depmsg) | |
639 | { | |
640 | error("conflicting storage class 'deprecated(%s)' and 'deprecated(%s)'", | |
641 | pAttrs->depmsg->toChars(), e->toChars()); | |
642 | } | |
643 | pAttrs->depmsg = e; | |
644 | a = parseBlock(pLastDecl, pAttrs); | |
645 | if (pAttrs->depmsg) | |
646 | { | |
647 | s = new DeprecatedDeclaration(pAttrs->depmsg, a); | |
648 | pAttrs->depmsg = NULL; | |
649 | } | |
650 | break; | |
651 | } | |
652 | ||
653 | case TOKlbracket: | |
654 | { | |
655 | if (peekNext() == TOKrbracket) | |
656 | error("empty attribute list is not allowed"); | |
657 | error("use @(attributes) instead of [attributes]"); | |
658 | Expressions *exps = parseArguments(); | |
659 | // no redundant/conflicting check for UDAs | |
660 | ||
661 | pAttrs->udas = UserAttributeDeclaration::concat(pAttrs->udas, exps); | |
662 | a = parseBlock(pLastDecl, pAttrs); | |
663 | if (pAttrs->udas) | |
664 | { | |
665 | s = new UserAttributeDeclaration(pAttrs->udas, a); | |
666 | pAttrs->udas = NULL; | |
667 | } | |
668 | break; | |
669 | } | |
670 | ||
671 | case TOKextern: | |
672 | { | |
673 | if (peek(&token)->value != TOKlparen) | |
674 | { | |
675 | stc = STCextern; | |
676 | goto Lstc; | |
677 | } | |
678 | ||
679 | Loc linkLoc = token.loc; | |
680 | Identifiers *idents = NULL; | |
681 | CPPMANGLE cppmangle = CPPMANGLEdefault; | |
9503d7b1 IB |
682 | bool cppMangleOnly = false; |
683 | LINK link = parseLinkage(&idents, &cppmangle, &cppMangleOnly); | |
b4c522fa IB |
684 | if (pAttrs->link != LINKdefault) |
685 | { | |
686 | if (pAttrs->link != link) | |
687 | { | |
688 | error("conflicting linkage extern (%s) and extern (%s)", | |
689 | linkageToChars(pAttrs->link), linkageToChars(link)); | |
690 | } | |
691 | else if (idents) | |
692 | { | |
693 | // Allow: | |
694 | // extern(C++, foo) extern(C++, bar) void foo(); | |
695 | // to be equivalent with: | |
696 | // extern(C++, foo.bar) void foo(); | |
697 | } | |
698 | else | |
699 | error("redundant linkage extern (%s)", linkageToChars(pAttrs->link)); | |
700 | } | |
701 | pAttrs->link = link; | |
702 | this->linkage = link; | |
703 | a = parseBlock(pLastDecl, pAttrs); | |
704 | if (idents) | |
705 | { | |
706 | assert(link == LINKcpp); | |
2cbc99d1 IB |
707 | assert(idents->length); |
708 | for (size_t i = idents->length; i;) | |
b4c522fa IB |
709 | { |
710 | Identifier *id = (*idents)[--i]; | |
711 | if (s) | |
712 | { | |
713 | a = new Dsymbols(); | |
714 | a->push(s); | |
715 | } | |
9503d7b1 | 716 | s = new Nspace(linkLoc, id, a, cppMangleOnly); |
b4c522fa IB |
717 | } |
718 | delete idents; | |
719 | pAttrs->link = LINKdefault; | |
720 | } | |
721 | else if (pAttrs->link != LINKdefault) | |
722 | { | |
723 | s = new LinkDeclaration(pAttrs->link, a); | |
724 | pAttrs->link = LINKdefault; | |
725 | } | |
726 | else if (cppmangle != CPPMANGLEdefault) | |
727 | { | |
728 | assert(link == LINKcpp); | |
729 | s = new CPPMangleDeclaration(cppmangle, a); | |
730 | } | |
731 | break; | |
732 | } | |
733 | ||
0a2ee409 IB |
734 | case TOKprivate: prot = Prot::private_; goto Lprot; |
735 | case TOKpackage: prot = Prot::package_; goto Lprot; | |
736 | case TOKprotected: prot = Prot::protected_; goto Lprot; | |
737 | case TOKpublic: prot = Prot::public_; goto Lprot; | |
738 | case TOKexport: prot = Prot::export_; goto Lprot; | |
b4c522fa IB |
739 | Lprot: |
740 | { | |
0a2ee409 | 741 | if (pAttrs->protection.kind != Prot::undefined) |
b4c522fa IB |
742 | { |
743 | if (pAttrs->protection.kind != prot) | |
744 | error("conflicting protection attribute '%s' and '%s'", | |
745 | protectionToChars(pAttrs->protection.kind), protectionToChars(prot)); | |
746 | else | |
747 | error("redundant protection attribute '%s'", protectionToChars(prot)); | |
748 | } | |
749 | pAttrs->protection.kind = prot; | |
750 | ||
751 | nextToken(); | |
752 | ||
753 | // optional qualified package identifier to bind | |
754 | // protection to | |
755 | Identifiers *pkg_prot_idents = NULL; | |
0a2ee409 | 756 | if (pAttrs->protection.kind == Prot::package_ && token.value == TOKlparen) |
b4c522fa IB |
757 | { |
758 | pkg_prot_idents = parseQualifiedIdentifier("protection package"); | |
759 | ||
760 | if (pkg_prot_idents) | |
761 | check(TOKrparen); | |
762 | else | |
763 | { | |
764 | while (token.value != TOKsemicolon && token.value != TOKeof) | |
765 | nextToken(); | |
766 | nextToken(); | |
767 | break; | |
768 | } | |
769 | } | |
770 | ||
771 | Loc attrloc = token.loc; | |
772 | a = parseBlock(pLastDecl, pAttrs); | |
0a2ee409 | 773 | if (pAttrs->protection.kind != Prot::undefined) |
b4c522fa | 774 | { |
0a2ee409 | 775 | if (pAttrs->protection.kind == Prot::package_ && pkg_prot_idents) |
b4c522fa IB |
776 | s = new ProtDeclaration(attrloc, pkg_prot_idents, a); |
777 | else | |
778 | s = new ProtDeclaration(attrloc, pAttrs->protection, a); | |
779 | ||
0a2ee409 | 780 | pAttrs->protection = Prot(Prot::undefined); |
b4c522fa IB |
781 | } |
782 | break; | |
783 | } | |
784 | ||
785 | case TOKalign: | |
786 | { | |
787 | const Loc attrLoc = token.loc; | |
788 | ||
789 | nextToken(); | |
790 | ||
791 | Expression *e = NULL; // default | |
792 | if (token.value == TOKlparen) | |
793 | { | |
794 | nextToken(); | |
795 | e = parseAssignExp(); | |
796 | check(TOKrparen); | |
797 | } | |
798 | ||
799 | if (pAttrs->setAlignment) | |
800 | { | |
801 | const char *s1 = ""; | |
802 | OutBuffer buf1; | |
803 | if (e) | |
804 | { | |
805 | buf1.printf("(%s)", e->toChars()); | |
fced594b | 806 | s1 = buf1.peekChars(); |
b4c522fa IB |
807 | } |
808 | error("redundant alignment attribute align%s", s1); | |
809 | } | |
810 | ||
811 | pAttrs->setAlignment = true; | |
812 | pAttrs->ealign = e; | |
813 | a = parseBlock(pLastDecl, pAttrs); | |
814 | if (pAttrs->setAlignment) | |
815 | { | |
816 | s = new AlignDeclaration(attrLoc, pAttrs->ealign, a); | |
817 | pAttrs->setAlignment = false; | |
818 | pAttrs->ealign = NULL; | |
819 | } | |
820 | break; | |
821 | } | |
822 | ||
823 | case TOKpragma: | |
824 | { | |
825 | Expressions *args = NULL; | |
826 | Loc loc = token.loc; | |
827 | ||
828 | nextToken(); | |
829 | check(TOKlparen); | |
830 | if (token.value != TOKidentifier) | |
831 | { | |
832 | error("pragma(identifier) expected"); | |
833 | goto Lerror; | |
834 | } | |
835 | Identifier *ident = token.ident; | |
836 | nextToken(); | |
837 | if (token.value == TOKcomma && peekNext() != TOKrparen) | |
838 | args = parseArguments(); // pragma(identifier, args...) | |
839 | else | |
840 | check(TOKrparen); // pragma(identifier) | |
841 | ||
842 | Dsymbols *a2 = NULL; | |
843 | if (token.value == TOKsemicolon) | |
844 | { | |
845 | /* Bugzilla 2354: Accept single semicolon as an empty | |
846 | * DeclarationBlock following attribute. | |
847 | * | |
848 | * Attribute DeclarationBlock | |
849 | * Pragma DeclDef | |
850 | * ; | |
851 | */ | |
852 | nextToken(); | |
853 | } | |
854 | else | |
855 | a2 = parseBlock(pLastDecl); | |
856 | s = new PragmaDeclaration(loc, ident, args, a2); | |
857 | break; | |
858 | } | |
859 | ||
860 | case TOKdebug: | |
861 | nextToken(); | |
862 | if (token.value == TOKassign) | |
863 | { | |
864 | nextToken(); | |
865 | if (token.value == TOKidentifier) | |
866 | s = new DebugSymbol(token.loc, token.ident); | |
867 | else if (token.value == TOKint32v || token.value == TOKint64v) | |
868 | s = new DebugSymbol(token.loc, (unsigned)token.uns64value); | |
869 | else | |
870 | { | |
871 | error("identifier or integer expected, not %s", token.toChars()); | |
872 | s = NULL; | |
873 | } | |
874 | nextToken(); | |
875 | if (token.value != TOKsemicolon) | |
876 | error("semicolon expected"); | |
877 | nextToken(); | |
878 | break; | |
879 | } | |
880 | ||
881 | condition = parseDebugCondition(); | |
882 | goto Lcondition; | |
883 | ||
884 | case TOKversion: | |
885 | nextToken(); | |
886 | if (token.value == TOKassign) | |
887 | { | |
888 | nextToken(); | |
889 | if (token.value == TOKidentifier) | |
890 | s = new VersionSymbol(token.loc, token.ident); | |
891 | else if (token.value == TOKint32v || token.value == TOKint64v) | |
892 | s = new VersionSymbol(token.loc, (unsigned)token.uns64value); | |
893 | else | |
894 | { | |
895 | error("identifier or integer expected, not %s", token.toChars()); | |
896 | s = NULL; | |
897 | } | |
898 | nextToken(); | |
899 | if (token.value != TOKsemicolon) | |
900 | error("semicolon expected"); | |
901 | nextToken(); | |
902 | break; | |
903 | } | |
904 | condition = parseVersionCondition(); | |
905 | goto Lcondition; | |
906 | ||
907 | Lcondition: | |
908 | { | |
909 | Dsymbols *athen; | |
910 | if (token.value == TOKcolon) | |
911 | athen = parseBlock(pLastDecl); | |
912 | else | |
913 | { | |
914 | Loc lookingForElseSave = lookingForElse; | |
915 | lookingForElse = token.loc; | |
916 | athen = parseBlock(pLastDecl); | |
917 | lookingForElse = lookingForElseSave; | |
918 | } | |
919 | Dsymbols *aelse = NULL; | |
920 | if (token.value == TOKelse) | |
921 | { | |
922 | Loc elseloc = token.loc; | |
923 | nextToken(); | |
924 | aelse = parseBlock(pLastDecl); | |
925 | checkDanglingElse(elseloc); | |
926 | } | |
927 | s = new ConditionalDeclaration(condition, athen, aelse); | |
928 | break; | |
929 | } | |
930 | ||
931 | case TOKsemicolon: // empty declaration | |
932 | //error("empty declaration"); | |
933 | nextToken(); | |
934 | continue; | |
935 | ||
936 | default: | |
937 | error("declaration expected, not '%s'",token.toChars()); | |
938 | Lerror: | |
939 | while (token.value != TOKsemicolon && token.value != TOKeof) | |
940 | nextToken(); | |
941 | nextToken(); | |
942 | s = NULL; | |
943 | continue; | |
944 | } | |
945 | ||
946 | if (s) | |
947 | { | |
948 | if (!s->isAttribDeclaration()) | |
949 | *pLastDecl = s; | |
950 | decldefs->push(s); | |
951 | addComment(s, pAttrs->comment); | |
952 | } | |
2cbc99d1 | 953 | else if (a && a->length) |
b4c522fa IB |
954 | { |
955 | decldefs->append(a); | |
956 | } | |
957 | } while (!once); | |
958 | ||
959 | linkage = linksave; | |
960 | ||
961 | return decldefs; | |
962 | } | |
963 | ||
964 | /********************************************* | |
965 | * Give error on redundant/conflicting storage class. | |
966 | * | |
967 | * TODO: remove deprecation in 2.068 and keep only error | |
968 | */ | |
969 | ||
970 | StorageClass Parser::appendStorageClass(StorageClass storageClass, StorageClass stc, | |
971 | bool deprec) | |
972 | { | |
973 | if ((storageClass & stc) || | |
974 | (storageClass & STCin && stc & (STCconst | STCscope)) || | |
975 | (stc & STCin && storageClass & (STCconst | STCscope))) | |
976 | { | |
977 | OutBuffer buf; | |
978 | stcToBuffer(&buf, stc); | |
979 | if (deprec) | |
fced594b | 980 | deprecation("redundant attribute '%s'", buf.peekChars()); |
b4c522fa | 981 | else |
fced594b | 982 | error("redundant attribute '%s'", buf.peekChars()); |
b4c522fa IB |
983 | return storageClass | stc; |
984 | } | |
985 | ||
986 | storageClass |= stc; | |
987 | ||
988 | if (stc & (STCconst | STCimmutable | STCmanifest)) | |
989 | { | |
990 | StorageClass u = storageClass & (STCconst | STCimmutable | STCmanifest); | |
991 | if (u & (u - 1)) | |
992 | error("conflicting attribute '%s'", Token::toChars(token.value)); | |
993 | } | |
994 | if (stc & (STCgshared | STCshared | STCtls)) | |
995 | { | |
996 | StorageClass u = storageClass & (STCgshared | STCshared | STCtls); | |
997 | if (u & (u - 1)) | |
998 | error("conflicting attribute '%s'", Token::toChars(token.value)); | |
999 | } | |
1000 | if (stc & (STCsafe | STCsystem | STCtrusted)) | |
1001 | { | |
1002 | StorageClass u = storageClass & (STCsafe | STCsystem | STCtrusted); | |
1003 | if (u & (u - 1)) | |
1004 | error("conflicting attribute '@%s'", token.toChars()); | |
1005 | } | |
1006 | ||
1007 | return storageClass; | |
1008 | } | |
1009 | ||
1010 | /*********************************************** | |
1011 | * Parse attribute, lexer is on '@'. | |
1012 | * Input: | |
1013 | * pudas array of UDAs to append to | |
1014 | * Returns: | |
1015 | * storage class if a predefined attribute; also scanner remains on identifier. | |
1016 | * 0 if not a predefined attribute | |
1017 | * *pudas set if user defined attribute, scanner is past UDA | |
1018 | * *pudas NULL if not a user defined attribute | |
1019 | */ | |
1020 | ||
1021 | StorageClass Parser::parseAttribute(Expressions **pudas) | |
1022 | { | |
1023 | nextToken(); | |
1024 | Expressions *udas = NULL; | |
1025 | StorageClass stc = 0; | |
1026 | if (token.value == TOKidentifier) | |
1027 | { | |
1028 | if (token.ident == Id::property) | |
1029 | stc = STCproperty; | |
1030 | else if (token.ident == Id::nogc) | |
1031 | stc = STCnogc; | |
1032 | else if (token.ident == Id::safe) | |
1033 | stc = STCsafe; | |
1034 | else if (token.ident == Id::trusted) | |
1035 | stc = STCtrusted; | |
1036 | else if (token.ident == Id::system) | |
1037 | stc = STCsystem; | |
1038 | else if (token.ident == Id::disable) | |
1039 | stc = STCdisable; | |
1040 | else if (token.ident == Id::future) | |
1041 | stc = STCfuture; | |
1042 | else | |
1043 | { | |
1044 | // Allow identifier, template instantiation, or function call | |
1045 | Expression *exp = parsePrimaryExp(); | |
1046 | if (token.value == TOKlparen) | |
1047 | { | |
1048 | Loc loc = token.loc; | |
1049 | exp = new CallExp(loc, exp, parseArguments()); | |
1050 | } | |
1051 | ||
1052 | udas = new Expressions(); | |
1053 | udas->push(exp); | |
1054 | } | |
1055 | } | |
1056 | else if (token.value == TOKlparen) | |
1057 | { | |
1058 | // @( ArgumentList ) | |
1059 | // Concatenate with existing | |
1060 | if (peekNext() == TOKrparen) | |
1061 | error("empty attribute list is not allowed"); | |
1062 | udas = parseArguments(); | |
1063 | } | |
1064 | else | |
1065 | { | |
1066 | error("@identifier or @(ArgumentList) expected, not @%s", token.toChars()); | |
1067 | } | |
1068 | ||
1069 | if (stc) | |
1070 | { | |
1071 | } | |
1072 | else if (udas) | |
1073 | { | |
1074 | *pudas = UserAttributeDeclaration::concat(*pudas, udas); | |
1075 | } | |
1076 | else | |
1077 | error("valid attributes are @property, @safe, @trusted, @system, @disable"); | |
1078 | return stc; | |
1079 | } | |
1080 | ||
1081 | /*********************************************** | |
1082 | * Parse const/immutable/shared/inout/nothrow/pure postfix | |
1083 | */ | |
1084 | ||
1085 | StorageClass Parser::parsePostfix(StorageClass storageClass, Expressions **pudas) | |
1086 | { | |
1087 | while (1) | |
1088 | { | |
1089 | StorageClass stc; | |
1090 | switch (token.value) | |
1091 | { | |
1092 | case TOKconst: stc = STCconst; break; | |
1093 | case TOKimmutable: stc = STCimmutable; break; | |
1094 | case TOKshared: stc = STCshared; break; | |
1095 | case TOKwild: stc = STCwild; break; | |
1096 | case TOKnothrow: stc = STCnothrow; break; | |
1097 | case TOKpure: stc = STCpure; break; | |
1098 | case TOKreturn: stc = STCreturn; break; | |
1099 | case TOKscope: stc = STCscope; break; | |
1100 | case TOKat: | |
1101 | { | |
1102 | Expressions *udas = NULL; | |
1103 | stc = parseAttribute(&udas); | |
1104 | if (udas) | |
1105 | { | |
1106 | if (pudas) | |
1107 | *pudas = UserAttributeDeclaration::concat(*pudas, udas); | |
1108 | else | |
1109 | { | |
1110 | // Disallow: | |
1111 | // void function() @uda fp; | |
1112 | // () @uda { return 1; } | |
1113 | error("user defined attributes cannot appear as postfixes"); | |
1114 | } | |
1115 | continue; | |
1116 | } | |
1117 | break; | |
1118 | } | |
1119 | ||
1120 | default: | |
1121 | return storageClass; | |
1122 | } | |
1123 | storageClass = appendStorageClass(storageClass, stc, true); | |
1124 | nextToken(); | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | StorageClass Parser::parseTypeCtor() | |
1129 | { | |
1130 | StorageClass storageClass = STCundefined; | |
1131 | ||
1132 | while (1) | |
1133 | { | |
1134 | if (peek(&token)->value == TOKlparen) | |
1135 | return storageClass; | |
1136 | ||
1137 | StorageClass stc; | |
1138 | switch (token.value) | |
1139 | { | |
1140 | case TOKconst: stc = STCconst; break; | |
1141 | case TOKimmutable: stc = STCimmutable; break; | |
1142 | case TOKshared: stc = STCshared; break; | |
1143 | case TOKwild: stc = STCwild; break; | |
1144 | ||
1145 | default: | |
1146 | return storageClass; | |
1147 | } | |
1148 | storageClass = appendStorageClass(storageClass, stc); | |
1149 | nextToken(); | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | /******************************************** | |
1154 | * Parse declarations after an align, protection, or extern decl. | |
1155 | */ | |
1156 | ||
1157 | Dsymbols *Parser::parseBlock(Dsymbol **pLastDecl, PrefixAttributes *pAttrs) | |
1158 | { | |
1159 | Dsymbols *a = NULL; | |
1160 | ||
1161 | //printf("parseBlock()\n"); | |
1162 | switch (token.value) | |
1163 | { | |
1164 | case TOKsemicolon: | |
1165 | error("declaration expected following attribute, not ';'"); | |
1166 | nextToken(); | |
1167 | break; | |
1168 | ||
1169 | case TOKeof: | |
1170 | error("declaration expected following attribute, not EOF"); | |
1171 | break; | |
1172 | ||
1173 | case TOKlcurly: | |
1174 | { | |
1175 | Loc lookingForElseSave = lookingForElse; | |
1176 | lookingForElse = Loc(); | |
1177 | ||
1178 | nextToken(); | |
1179 | a = parseDeclDefs(0, pLastDecl); | |
1180 | if (token.value != TOKrcurly) | |
1181 | { | |
1182 | /* { */ | |
1183 | error("matching '}' expected, not %s", token.toChars()); | |
1184 | } | |
1185 | else | |
1186 | nextToken(); | |
1187 | lookingForElse = lookingForElseSave; | |
1188 | break; | |
1189 | } | |
1190 | ||
1191 | case TOKcolon: | |
1192 | nextToken(); | |
1193 | a = parseDeclDefs(0, pLastDecl); // grab declarations up to closing curly bracket | |
1194 | break; | |
1195 | ||
1196 | default: | |
1197 | a = parseDeclDefs(1, pLastDecl, pAttrs); | |
1198 | break; | |
1199 | } | |
1200 | return a; | |
1201 | } | |
1202 | ||
1203 | /********************************** | |
1204 | * Parse a static assertion. | |
1205 | * Current token is 'static'. | |
1206 | */ | |
1207 | ||
1208 | StaticAssert *Parser::parseStaticAssert() | |
1209 | { | |
1210 | Loc loc = token.loc; | |
1211 | Expression *exp; | |
1212 | Expression *msg = NULL; | |
1213 | ||
1214 | //printf("parseStaticAssert()\n"); | |
1215 | nextToken(); | |
1216 | nextToken(); | |
1217 | check(TOKlparen); | |
1218 | exp = parseAssignExp(); | |
1219 | if (token.value == TOKcomma) | |
1220 | { | |
1221 | nextToken(); | |
1222 | if (token.value != TOKrparen) | |
1223 | { | |
1224 | msg = parseAssignExp(); | |
1225 | if (token.value == TOKcomma) | |
1226 | nextToken(); | |
1227 | } | |
1228 | } | |
1229 | check(TOKrparen); | |
1230 | check(TOKsemicolon); | |
1231 | return new StaticAssert(loc, exp, msg); | |
1232 | } | |
1233 | ||
1234 | /*********************************** | |
1235 | * Parse typeof(expression). | |
1236 | * Current token is on the 'typeof'. | |
1237 | */ | |
1238 | ||
1239 | TypeQualified *Parser::parseTypeof() | |
1240 | { | |
1241 | TypeQualified *t; | |
1242 | Loc loc = token.loc; | |
1243 | ||
1244 | nextToken(); | |
1245 | check(TOKlparen); | |
1246 | if (token.value == TOKreturn) // typeof(return) | |
1247 | { | |
1248 | nextToken(); | |
1249 | t = new TypeReturn(loc); | |
1250 | } | |
1251 | else | |
1252 | { | |
1253 | Expression *exp = parseExpression(); // typeof(expression) | |
1254 | t = new TypeTypeof(loc, exp); | |
1255 | } | |
1256 | check(TOKrparen); | |
1257 | return t; | |
1258 | } | |
1259 | ||
1260 | /*********************************** | |
1261 | * Parse __vector(type). | |
1262 | * Current token is on the '__vector'. | |
1263 | */ | |
1264 | ||
1265 | Type *Parser::parseVector() | |
1266 | { | |
1267 | nextToken(); | |
1268 | check(TOKlparen); | |
1269 | Type *tb = parseType(); | |
1270 | check(TOKrparen); | |
1271 | return new TypeVector(tb); | |
1272 | } | |
1273 | ||
1274 | /*********************************** | |
1275 | * Parse: | |
1276 | * extern (linkage) | |
1277 | * extern (C++, namespaces) | |
9503d7b1 | 1278 | * extern (C++, "namespace", "namespaces", ...) |
b4c522fa IB |
1279 | * The parser is on the 'extern' token. |
1280 | */ | |
1281 | ||
9503d7b1 | 1282 | LINK Parser::parseLinkage(Identifiers **pidents, CPPMANGLE *pcppmangle, bool *pcppMangleOnly) |
b4c522fa IB |
1283 | { |
1284 | Identifiers *idents = NULL; | |
1285 | CPPMANGLE cppmangle = CPPMANGLEdefault; | |
9503d7b1 | 1286 | bool cppMangleOnly = false; |
b4c522fa IB |
1287 | LINK link = LINKdefault; |
1288 | nextToken(); | |
1289 | assert(token.value == TOKlparen); | |
1290 | nextToken(); | |
1291 | if (token.value == TOKidentifier) | |
1292 | { Identifier *id = token.ident; | |
1293 | ||
1294 | nextToken(); | |
1295 | if (id == Id::Windows) | |
1296 | link = LINKwindows; | |
1297 | else if (id == Id::Pascal) | |
1298 | link = LINKpascal; | |
1299 | else if (id == Id::D) | |
1300 | link = LINKd; | |
1301 | else if (id == Id::C) | |
1302 | { | |
1303 | link = LINKc; | |
1304 | if (token.value == TOKplusplus) | |
1305 | { | |
1306 | link = LINKcpp; | |
1307 | nextToken(); | |
1308 | if (token.value == TOKcomma) // , namespaces or class or struct | |
1309 | { | |
1310 | nextToken(); | |
1311 | if (token.value == TOKclass || token.value == TOKstruct) | |
1312 | { | |
1313 | cppmangle = token.value == TOKclass ? CPPMANGLEclass : CPPMANGLEstruct; | |
1314 | nextToken(); | |
1315 | } | |
9503d7b1 IB |
1316 | else if (token.value == TOKstring) // extern(C++, "namespace", "namespaces") |
1317 | { | |
1318 | cppMangleOnly = true; | |
1319 | idents = new Identifiers(); | |
1320 | ||
1321 | while (1) | |
1322 | { | |
1323 | StringExp *stringExp = (StringExp *)parsePrimaryExp(); | |
1324 | const char *name = stringExp->toPtr(); | |
1325 | if (stringExp->len == 0) | |
1326 | { | |
1327 | error("invalid zero length C++ namespace"); | |
1328 | idents = NULL; | |
1329 | break; | |
1330 | } | |
1331 | else if (!Identifier::isValidIdentifier(name)) | |
1332 | { | |
1333 | error("expected valid identifer for C++ namespace but got `%s`", name); | |
1334 | idents = NULL; | |
1335 | break; | |
1336 | } | |
1337 | idents->push(Identifier::idPool(name)); | |
1338 | if (token.value == TOKcomma) | |
1339 | { | |
1340 | nextToken(); | |
1341 | if (token.value != TOKstring) | |
1342 | { | |
1343 | error("string expected following `,` for C++ namespace, not `%s`", token.toChars()); | |
1344 | idents = NULL; | |
1345 | break; | |
1346 | } | |
1347 | } | |
1348 | else | |
1349 | break; | |
1350 | } | |
1351 | } | |
b4c522fa IB |
1352 | else |
1353 | { | |
1354 | idents = new Identifiers(); | |
1355 | while (1) | |
1356 | { | |
1357 | if (token.value == TOKidentifier) | |
1358 | { | |
1359 | Identifier *idn = token.ident; | |
1360 | idents->push(idn); | |
1361 | nextToken(); | |
1362 | if (token.value == TOKdot) | |
1363 | { | |
1364 | nextToken(); | |
1365 | continue; | |
1366 | } | |
1367 | } | |
1368 | else | |
1369 | { | |
1370 | error("identifier expected for C++ namespace"); | |
1371 | idents = NULL; // error occurred, invalidate list of elements. | |
1372 | } | |
1373 | break; | |
1374 | } | |
1375 | } | |
1376 | } | |
1377 | } | |
1378 | } | |
1379 | else if (id == Id::Objective) // Looking for tokens "Objective-C" | |
1380 | { | |
1381 | if (token.value == TOKmin) | |
1382 | { | |
1383 | nextToken(); | |
1384 | if (token.ident == Id::C) | |
1385 | { | |
1386 | link = LINKobjc; | |
1387 | nextToken(); | |
1388 | } | |
1389 | else | |
1390 | goto LinvalidLinkage; | |
1391 | } | |
1392 | else | |
1393 | goto LinvalidLinkage; | |
1394 | } | |
1395 | else if (id == Id::System) | |
1396 | { | |
1397 | link = LINKsystem; | |
1398 | } | |
1399 | else | |
1400 | { | |
1401 | LinvalidLinkage: | |
1402 | error("valid linkage identifiers are D, C, C++, Objective-C, Pascal, Windows, System"); | |
1403 | link = LINKd; | |
1404 | } | |
1405 | } | |
1406 | else | |
1407 | { | |
1408 | link = LINKd; // default | |
1409 | } | |
1410 | check(TOKrparen); | |
1411 | *pidents = idents; | |
1412 | *pcppmangle = cppmangle; | |
9503d7b1 | 1413 | *pcppMangleOnly = cppMangleOnly; |
b4c522fa IB |
1414 | return link; |
1415 | } | |
1416 | ||
1417 | /*********************************** | |
1418 | * Parse ident1.ident2.ident3 | |
1419 | * | |
1420 | * Params: | |
1421 | * entity = what qualified identifier is expected to resolve into. | |
1422 | * Used only for better error message | |
1423 | * | |
1424 | * Returns: | |
1425 | * array of identifiers with actual qualified one stored last | |
1426 | */ | |
1427 | Identifiers *Parser::parseQualifiedIdentifier(const char *entity) | |
1428 | { | |
1429 | Identifiers *qualified = NULL; | |
1430 | ||
1431 | do | |
1432 | { | |
1433 | nextToken(); | |
1434 | if (token.value != TOKidentifier) | |
1435 | { | |
1436 | error("%s expected as dot-separated identifiers, got '%s'", | |
1437 | entity, token.toChars()); | |
1438 | return NULL; | |
1439 | } | |
1440 | ||
1441 | Identifier *id = token.ident; | |
1442 | if (!qualified) | |
1443 | qualified = new Identifiers(); | |
1444 | qualified->push(id); | |
1445 | ||
1446 | nextToken(); | |
1447 | } while (token.value == TOKdot); | |
1448 | ||
1449 | return qualified; | |
1450 | } | |
1451 | ||
1452 | /************************************** | |
1453 | * Parse a debug conditional | |
1454 | */ | |
1455 | ||
1456 | Condition *Parser::parseDebugCondition() | |
1457 | { | |
1458 | Condition *c; | |
1459 | ||
1460 | if (token.value == TOKlparen) | |
1461 | { | |
1462 | nextToken(); | |
1463 | unsigned level = 1; | |
1464 | Identifier *id = NULL; | |
1465 | ||
1466 | if (token.value == TOKidentifier) | |
1467 | id = token.ident; | |
1468 | else if (token.value == TOKint32v || token.value == TOKint64v) | |
1469 | level = (unsigned)token.uns64value; | |
1470 | else | |
1471 | error("identifier or integer expected, not %s", token.toChars()); | |
1472 | nextToken(); | |
1473 | check(TOKrparen); | |
1474 | c = new DebugCondition(mod, level, id); | |
1475 | } | |
1476 | else | |
1477 | c = new DebugCondition(mod, 1, NULL); | |
1478 | return c; | |
1479 | ||
1480 | } | |
1481 | ||
1482 | /************************************** | |
1483 | * Parse a version conditional | |
1484 | */ | |
1485 | ||
1486 | Condition *Parser::parseVersionCondition() | |
1487 | { | |
1488 | Condition *c; | |
1489 | unsigned level = 1; | |
1490 | Identifier *id = NULL; | |
1491 | ||
1492 | if (token.value == TOKlparen) | |
1493 | { | |
1494 | nextToken(); | |
1495 | /* Allow: | |
1496 | * version (unittest) | |
1497 | * version (assert) | |
1498 | * even though they are keywords | |
1499 | */ | |
1500 | if (token.value == TOKidentifier) | |
1501 | id = token.ident; | |
1502 | else if (token.value == TOKint32v || token.value == TOKint64v) | |
1503 | level = (unsigned)token.uns64value; | |
1504 | else if (token.value == TOKunittest) | |
1505 | id = Identifier::idPool(Token::toChars(TOKunittest)); | |
1506 | else if (token.value == TOKassert) | |
1507 | id = Identifier::idPool(Token::toChars(TOKassert)); | |
1508 | else | |
1509 | error("identifier or integer expected, not %s", token.toChars()); | |
1510 | nextToken(); | |
1511 | check(TOKrparen); | |
1512 | ||
1513 | } | |
1514 | else | |
1515 | error("(condition) expected following version"); | |
1516 | c = new VersionCondition(mod, level, id); | |
1517 | return c; | |
1518 | ||
1519 | } | |
1520 | ||
1521 | /*********************************************** | |
1522 | * static if (expression) | |
1523 | * body | |
1524 | * else | |
1525 | * body | |
1526 | * Current token is 'static'. | |
1527 | */ | |
1528 | ||
1529 | Condition *Parser::parseStaticIfCondition() | |
1530 | { | |
1531 | Expression *exp; | |
1532 | Condition *condition; | |
1533 | Loc loc = token.loc; | |
1534 | ||
1535 | nextToken(); | |
1536 | nextToken(); | |
1537 | if (token.value == TOKlparen) | |
1538 | { | |
1539 | nextToken(); | |
1540 | exp = parseAssignExp(); | |
1541 | check(TOKrparen); | |
1542 | } | |
1543 | else | |
1544 | { | |
1545 | error("(expression) expected following static if"); | |
1546 | exp = NULL; | |
1547 | } | |
1548 | condition = new StaticIfCondition(loc, exp); | |
1549 | return condition; | |
1550 | } | |
1551 | ||
1552 | ||
1553 | /***************************************** | |
1554 | * Parse a constructor definition: | |
1555 | * this(parameters) { body } | |
1556 | * or postblit: | |
1557 | * this(this) { body } | |
1558 | * or constructor template: | |
1559 | * this(templateparameters)(parameters) { body } | |
1560 | * Current token is 'this'. | |
1561 | */ | |
1562 | ||
1563 | Dsymbol *Parser::parseCtor(PrefixAttributes *pAttrs) | |
1564 | { | |
1565 | Expressions *udas = NULL; | |
1566 | Loc loc = token.loc; | |
1567 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1568 | ||
1569 | nextToken(); | |
1570 | if (token.value == TOKlparen && peekNext() == TOKthis && peekNext2() == TOKrparen) | |
1571 | { | |
1572 | // this(this) { ... } | |
1573 | nextToken(); | |
1574 | nextToken(); | |
1575 | check(TOKrparen); | |
1576 | ||
1577 | stc = parsePostfix(stc, &udas); | |
1578 | if (stc & STCstatic) | |
1579 | error(loc, "postblit cannot be static"); | |
1580 | ||
1581 | PostBlitDeclaration *f = new PostBlitDeclaration(loc, Loc(), stc, Id::postblit); | |
1582 | if (pAttrs) | |
1583 | pAttrs->storageClass = STCundefined; | |
1584 | Dsymbol *s = parseContracts(f); | |
1585 | if (udas) | |
1586 | { | |
1587 | Dsymbols *a = new Dsymbols(); | |
1588 | a->push(f); | |
1589 | s = new UserAttributeDeclaration(udas, a); | |
1590 | } | |
1591 | return s; | |
1592 | } | |
1593 | ||
1594 | /* Look ahead to see if: | |
1595 | * this(...)(...) | |
1596 | * which is a constructor template | |
1597 | */ | |
1598 | TemplateParameters *tpl = NULL; | |
1599 | if (token.value == TOKlparen && peekPastParen(&token)->value == TOKlparen) | |
1600 | { | |
1601 | tpl = parseTemplateParameterList(); | |
1602 | } | |
1603 | ||
1604 | /* Just a regular constructor | |
1605 | */ | |
c3a2ba10 | 1606 | VarArg varargs; |
b4c522fa IB |
1607 | Parameters *parameters = parseParameters(&varargs); |
1608 | stc = parsePostfix(stc, &udas); | |
c3a2ba10 | 1609 | if (varargs != VARARGnone || Parameter::dim(parameters) != 0) |
b4c522fa IB |
1610 | { |
1611 | if (stc & STCstatic) | |
1612 | error(loc, "constructor cannot be static"); | |
1613 | } | |
1614 | else if (StorageClass ss = stc & (STCshared | STCstatic)) // this() | |
1615 | { | |
1616 | if (ss == STCstatic) | |
1617 | error(loc, "use 'static this()' to declare a static constructor"); | |
1618 | else if (ss == (STCshared | STCstatic)) | |
1619 | error(loc, "use 'shared static this()' to declare a shared static constructor"); | |
1620 | } | |
1621 | ||
1622 | Expression *constraint = tpl ? parseConstraint() : NULL; | |
1623 | ||
c3a2ba10 IB |
1624 | Type *tf = new TypeFunction(ParameterList(parameters, varargs), |
1625 | NULL, linkage, stc); // ReturnType -> auto | |
b4c522fa IB |
1626 | tf = tf->addSTC(stc); |
1627 | ||
1628 | CtorDeclaration *f = new CtorDeclaration(loc, Loc(), stc, tf); | |
1629 | if (pAttrs) | |
1630 | pAttrs->storageClass = STCundefined; | |
1631 | Dsymbol *s = parseContracts(f); | |
1632 | if (udas) | |
1633 | { | |
1634 | Dsymbols *a = new Dsymbols(); | |
1635 | a->push(f); | |
1636 | s = new UserAttributeDeclaration(udas, a); | |
1637 | } | |
1638 | ||
1639 | if (tpl) | |
1640 | { | |
1641 | // Wrap a template around it | |
1642 | Dsymbols *decldefs = new Dsymbols(); | |
1643 | decldefs->push(s); | |
1644 | s = new TemplateDeclaration(loc, f->ident, tpl, constraint, decldefs); | |
1645 | } | |
1646 | ||
1647 | return s; | |
1648 | } | |
1649 | ||
1650 | /***************************************** | |
1651 | * Parse a destructor definition: | |
1652 | * ~this() { body } | |
1653 | * Current token is '~'. | |
1654 | */ | |
1655 | ||
1656 | Dsymbol *Parser::parseDtor(PrefixAttributes *pAttrs) | |
1657 | { | |
1658 | Expressions *udas = NULL; | |
1659 | Loc loc = token.loc; | |
1660 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1661 | ||
1662 | nextToken(); | |
1663 | check(TOKthis); | |
1664 | check(TOKlparen); | |
1665 | check(TOKrparen); | |
1666 | ||
1667 | stc = parsePostfix(stc, &udas); | |
1668 | if (StorageClass ss = stc & (STCshared | STCstatic)) | |
1669 | { | |
1670 | if (ss == STCstatic) | |
1671 | error(loc, "use 'static ~this()' to declare a static destructor"); | |
1672 | else if (ss == (STCshared | STCstatic)) | |
1673 | error(loc, "use 'shared static ~this()' to declare a shared static destructor"); | |
1674 | } | |
1675 | ||
1676 | DtorDeclaration *f = new DtorDeclaration(loc, Loc(), stc, Id::dtor); | |
1677 | if (pAttrs) | |
1678 | pAttrs->storageClass = STCundefined; | |
1679 | Dsymbol *s = parseContracts(f); | |
1680 | if (udas) | |
1681 | { | |
1682 | Dsymbols *a = new Dsymbols(); | |
1683 | a->push(f); | |
1684 | s = new UserAttributeDeclaration(udas, a); | |
1685 | } | |
1686 | return s; | |
1687 | } | |
1688 | ||
1689 | /***************************************** | |
1690 | * Parse a static constructor definition: | |
1691 | * static this() { body } | |
1692 | * Current token is 'static'. | |
1693 | */ | |
1694 | ||
1695 | Dsymbol *Parser::parseStaticCtor(PrefixAttributes *pAttrs) | |
1696 | { | |
1697 | //Expressions *udas = NULL; | |
1698 | Loc loc = token.loc; | |
1699 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1700 | ||
1701 | nextToken(); | |
1702 | nextToken(); | |
1703 | check(TOKlparen); | |
1704 | check(TOKrparen); | |
1705 | ||
1706 | stc = parsePostfix(stc & ~STC_TYPECTOR, NULL) | stc; | |
1707 | if (stc & STCshared) | |
1708 | error(loc, "use 'shared static this()' to declare a shared static constructor"); | |
1709 | else if (stc & STCstatic) | |
1710 | appendStorageClass(stc, STCstatic); // complaint for the redundancy | |
1711 | else if (StorageClass modStc = stc & STC_TYPECTOR) | |
1712 | { | |
1713 | OutBuffer buf; | |
1714 | stcToBuffer(&buf, modStc); | |
fced594b | 1715 | error(loc, "static constructor cannot be %s", buf.peekChars()); |
b4c522fa IB |
1716 | } |
1717 | stc &= ~(STCstatic | STC_TYPECTOR); | |
1718 | ||
1719 | StaticCtorDeclaration *f = new StaticCtorDeclaration(loc, Loc(), stc); | |
1720 | if (pAttrs) | |
1721 | pAttrs->storageClass = STCundefined; | |
1722 | Dsymbol *s = parseContracts(f); | |
1723 | return s; | |
1724 | } | |
1725 | ||
1726 | /***************************************** | |
1727 | * Parse a static destructor definition: | |
1728 | * static ~this() { body } | |
1729 | * Current token is 'static'. | |
1730 | */ | |
1731 | ||
1732 | Dsymbol *Parser::parseStaticDtor(PrefixAttributes *pAttrs) | |
1733 | { | |
1734 | Expressions *udas = NULL; | |
1735 | Loc loc = token.loc; | |
1736 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1737 | ||
1738 | nextToken(); | |
1739 | nextToken(); | |
1740 | check(TOKthis); | |
1741 | check(TOKlparen); | |
1742 | check(TOKrparen); | |
1743 | ||
1744 | stc = parsePostfix(stc & ~STC_TYPECTOR, &udas) | stc; | |
1745 | if (stc & STCshared) | |
1746 | error(loc, "use 'shared static ~this()' to declare a shared static destructor"); | |
1747 | else if (stc & STCstatic) | |
1748 | appendStorageClass(stc, STCstatic); // complaint for the redundancy | |
1749 | else if (StorageClass modStc = stc & STC_TYPECTOR) | |
1750 | { | |
1751 | OutBuffer buf; | |
1752 | stcToBuffer(&buf, modStc); | |
fced594b | 1753 | error(loc, "static destructor cannot be %s", buf.peekChars()); |
b4c522fa IB |
1754 | } |
1755 | stc &= ~(STCstatic | STC_TYPECTOR); | |
1756 | ||
1757 | StaticDtorDeclaration *f = new StaticDtorDeclaration(loc, Loc(), stc); | |
1758 | if (pAttrs) | |
1759 | pAttrs->storageClass = STCundefined; | |
1760 | Dsymbol *s = parseContracts(f); | |
1761 | if (udas) | |
1762 | { | |
1763 | Dsymbols *a = new Dsymbols(); | |
1764 | a->push(f); | |
1765 | s = new UserAttributeDeclaration(udas, a); | |
1766 | } | |
1767 | return s; | |
1768 | } | |
1769 | ||
1770 | /***************************************** | |
1771 | * Parse a shared static constructor definition: | |
1772 | * shared static this() { body } | |
1773 | * Current token is 'shared'. | |
1774 | */ | |
1775 | ||
1776 | Dsymbol *Parser::parseSharedStaticCtor(PrefixAttributes *pAttrs) | |
1777 | { | |
1778 | //Expressions *udas = NULL; | |
1779 | Loc loc = token.loc; | |
1780 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1781 | ||
1782 | nextToken(); | |
1783 | nextToken(); | |
1784 | nextToken(); | |
1785 | check(TOKlparen); | |
1786 | check(TOKrparen); | |
1787 | ||
1788 | stc = parsePostfix(stc & ~STC_TYPECTOR, NULL) | stc; | |
1789 | if (StorageClass ss = stc & (STCshared | STCstatic)) | |
1790 | appendStorageClass(stc, ss); // complaint for the redundancy | |
1791 | else if (StorageClass modStc = stc & STC_TYPECTOR) | |
1792 | { | |
1793 | OutBuffer buf; | |
1794 | stcToBuffer(&buf, modStc); | |
fced594b | 1795 | error(loc, "shared static constructor cannot be %s", buf.peekChars()); |
b4c522fa IB |
1796 | } |
1797 | stc &= ~(STCstatic | STC_TYPECTOR); | |
1798 | ||
1799 | SharedStaticCtorDeclaration *f = new SharedStaticCtorDeclaration(loc, Loc(), stc); | |
1800 | if (pAttrs) | |
1801 | pAttrs->storageClass = STCundefined; | |
1802 | Dsymbol *s = parseContracts(f); | |
1803 | return s; | |
1804 | } | |
1805 | ||
1806 | /***************************************** | |
1807 | * Parse a shared static destructor definition: | |
1808 | * shared static ~this() { body } | |
1809 | * Current token is 'shared'. | |
1810 | */ | |
1811 | ||
1812 | Dsymbol *Parser::parseSharedStaticDtor(PrefixAttributes *pAttrs) | |
1813 | { | |
1814 | Expressions *udas = NULL; | |
1815 | Loc loc = token.loc; | |
1816 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1817 | ||
1818 | nextToken(); | |
1819 | nextToken(); | |
1820 | nextToken(); | |
1821 | check(TOKthis); | |
1822 | check(TOKlparen); | |
1823 | check(TOKrparen); | |
1824 | ||
1825 | stc = parsePostfix(stc & ~STC_TYPECTOR, &udas) | stc; | |
1826 | if (StorageClass ss = stc & (STCshared | STCstatic)) | |
1827 | appendStorageClass(stc, ss); // complaint for the redundancy | |
1828 | else if (StorageClass modStc = stc & STC_TYPECTOR) | |
1829 | { | |
1830 | OutBuffer buf; | |
1831 | stcToBuffer(&buf, modStc); | |
fced594b | 1832 | error(loc, "shared static destructor cannot be %s", buf.peekChars()); |
b4c522fa IB |
1833 | } |
1834 | stc &= ~(STCstatic | STC_TYPECTOR); | |
1835 | ||
1836 | SharedStaticDtorDeclaration *f = new SharedStaticDtorDeclaration(loc, Loc(), stc); | |
1837 | if (pAttrs) | |
1838 | pAttrs->storageClass = STCundefined; | |
1839 | Dsymbol *s = parseContracts(f); | |
1840 | if (udas) | |
1841 | { | |
1842 | Dsymbols *a = new Dsymbols(); | |
1843 | a->push(f); | |
1844 | s = new UserAttributeDeclaration(udas, a); | |
1845 | } | |
1846 | return s; | |
1847 | } | |
1848 | ||
1849 | /***************************************** | |
1850 | * Parse an invariant definition: | |
1851 | * invariant() { body } | |
1852 | * Current token is 'invariant'. | |
1853 | */ | |
1854 | ||
1855 | Dsymbol *Parser::parseInvariant(PrefixAttributes *pAttrs) | |
1856 | { | |
1857 | Loc loc = token.loc; | |
1858 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1859 | ||
1860 | nextToken(); | |
1861 | if (token.value == TOKlparen) // optional () | |
1862 | { | |
1863 | nextToken(); | |
1864 | check(TOKrparen); | |
1865 | } | |
1866 | ||
1867 | InvariantDeclaration *f = new InvariantDeclaration(loc, Loc(), stc); | |
1868 | if (pAttrs) | |
1869 | pAttrs->storageClass = STCundefined; | |
1870 | f->fbody = parseStatement(PScurly); | |
1871 | return f; | |
1872 | } | |
1873 | ||
1874 | /***************************************** | |
1875 | * Parse a unittest definition: | |
1876 | * unittest { body } | |
1877 | * Current token is 'unittest'. | |
1878 | */ | |
1879 | ||
1880 | Dsymbol *Parser::parseUnitTest(PrefixAttributes *pAttrs) | |
1881 | { | |
1882 | Loc loc = token.loc; | |
1883 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1884 | ||
1885 | nextToken(); | |
1886 | ||
1887 | const utf8_t *begPtr = token.ptr + 1; // skip '{' | |
1888 | const utf8_t *endPtr = NULL; | |
1889 | Statement *sbody = parseStatement(PScurly, &endPtr); | |
1890 | ||
1891 | /** Extract unittest body as a string. Must be done eagerly since memory | |
1892 | will be released by the lexer before doc gen. */ | |
1893 | char *docline = NULL; | |
1894 | if (global.params.doDocComments && endPtr > begPtr) | |
1895 | { | |
1896 | /* Remove trailing whitespaces */ | |
1897 | for (const utf8_t *p = endPtr - 1; | |
1898 | begPtr <= p && (*p == ' ' || *p == '\r' || *p == '\n' || *p == '\t'); --p) | |
1899 | { | |
1900 | endPtr = p; | |
1901 | } | |
1902 | ||
1903 | size_t len = endPtr - begPtr; | |
1904 | if (len > 0) | |
1905 | { | |
1906 | docline = (char *)mem.xmalloc(len + 2); | |
1907 | memcpy(docline, begPtr, len); | |
1908 | docline[len ] = '\n'; // Terminate all lines by LF | |
1909 | docline[len+1] = '\0'; | |
1910 | } | |
1911 | } | |
1912 | ||
1913 | UnitTestDeclaration *f = new UnitTestDeclaration(loc, token.loc, stc, docline); | |
1914 | if (pAttrs) | |
1915 | pAttrs->storageClass = STCundefined; | |
1916 | f->fbody = sbody; | |
1917 | return f; | |
1918 | } | |
1919 | ||
1920 | /***************************************** | |
1921 | * Parse a new definition: | |
1922 | * new(parameters) { body } | |
1923 | * Current token is 'new'. | |
1924 | */ | |
1925 | ||
1926 | Dsymbol *Parser::parseNew(PrefixAttributes *pAttrs) | |
1927 | { | |
1928 | Loc loc = token.loc; | |
1929 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1930 | ||
1931 | nextToken(); | |
1932 | ||
c3a2ba10 | 1933 | VarArg varargs; |
b4c522fa IB |
1934 | Parameters *parameters = parseParameters(&varargs); |
1935 | NewDeclaration *f = new NewDeclaration(loc, Loc(), stc, parameters, varargs); | |
1936 | if (pAttrs) | |
1937 | pAttrs->storageClass = STCundefined; | |
1938 | Dsymbol *s = parseContracts(f); | |
1939 | return s; | |
1940 | } | |
1941 | ||
1942 | /***************************************** | |
1943 | * Parse a delete definition: | |
1944 | * delete(parameters) { body } | |
1945 | * Current token is 'delete'. | |
1946 | */ | |
1947 | ||
1948 | Dsymbol *Parser::parseDelete(PrefixAttributes *pAttrs) | |
1949 | { | |
1950 | Loc loc = token.loc; | |
1951 | StorageClass stc = pAttrs ? pAttrs->storageClass : STCundefined; | |
1952 | ||
1953 | nextToken(); | |
1954 | ||
c3a2ba10 | 1955 | VarArg varargs; |
b4c522fa | 1956 | Parameters *parameters = parseParameters(&varargs); |
c3a2ba10 | 1957 | if (varargs != VARARGnone) |
b4c522fa IB |
1958 | error("... not allowed in delete function parameter list"); |
1959 | DeleteDeclaration *f = new DeleteDeclaration(loc, Loc(), stc, parameters); | |
1960 | if (pAttrs) | |
1961 | pAttrs->storageClass = STCundefined; | |
1962 | Dsymbol *s = parseContracts(f); | |
1963 | return s; | |
1964 | } | |
1965 | ||
1966 | /********************************************** | |
1967 | * Parse parameter list. | |
1968 | */ | |
1969 | ||
c3a2ba10 | 1970 | Parameters *Parser::parseParameters(VarArg *pvarargs, TemplateParameters **tpl) |
b4c522fa IB |
1971 | { |
1972 | Parameters *parameters = new Parameters(); | |
c3a2ba10 | 1973 | VarArg varargs = VARARGnone; |
b4c522fa IB |
1974 | int hasdefault = 0; |
1975 | ||
1976 | check(TOKlparen); | |
1977 | while (1) | |
1978 | { | |
1979 | Identifier *ai = NULL; | |
1980 | Type *at; | |
1981 | StorageClass storageClass = 0; | |
1982 | StorageClass stc; | |
1983 | Expression *ae; | |
1984 | ||
1985 | for (;1; nextToken()) | |
1986 | { | |
1987 | switch (token.value) | |
1988 | { | |
1989 | case TOKrparen: | |
1990 | break; | |
1991 | ||
1992 | case TOKdotdotdot: | |
c3a2ba10 | 1993 | varargs = VARARGvariadic; |
b4c522fa IB |
1994 | nextToken(); |
1995 | break; | |
1996 | ||
1997 | case TOKconst: | |
1998 | if (peek(&token)->value == TOKlparen) | |
1999 | goto Ldefault; | |
2000 | stc = STCconst; | |
2001 | goto L2; | |
2002 | ||
2003 | case TOKimmutable: | |
2004 | if (peek(&token)->value == TOKlparen) | |
2005 | goto Ldefault; | |
2006 | stc = STCimmutable; | |
2007 | goto L2; | |
2008 | ||
2009 | case TOKshared: | |
2010 | if (peek(&token)->value == TOKlparen) | |
2011 | goto Ldefault; | |
2012 | stc = STCshared; | |
2013 | goto L2; | |
2014 | ||
2015 | case TOKwild: | |
2016 | if (peek(&token)->value == TOKlparen) | |
2017 | goto Ldefault; | |
2018 | stc = STCwild; | |
2019 | goto L2; | |
2020 | ||
2021 | case TOKin: stc = STCin; goto L2; | |
2022 | case TOKout: stc = STCout; goto L2; | |
2023 | case TOKref: stc = STCref; goto L2; | |
2024 | case TOKlazy: stc = STClazy; goto L2; | |
2025 | case TOKscope: stc = STCscope; goto L2; | |
2026 | case TOKfinal: stc = STCfinal; goto L2; | |
2027 | case TOKauto: stc = STCauto; goto L2; | |
2028 | case TOKreturn: stc = STCreturn; goto L2; | |
2029 | L2: | |
2030 | storageClass = appendStorageClass(storageClass, stc); | |
2031 | continue; | |
2032 | ||
2033 | default: | |
2034 | Ldefault: | |
2035 | { stc = storageClass & (STCin | STCout | STCref | STClazy); | |
2036 | // if stc is not a power of 2 | |
2037 | if (stc & (stc - 1) && | |
2038 | !(stc == (STCin | STCref))) | |
2039 | error("incompatible parameter storage classes"); | |
2040 | //if ((storageClass & STCscope) && (storageClass & (STCref | STCout))) | |
2041 | //error("scope cannot be ref or out"); | |
2042 | ||
2043 | Token *t; | |
2044 | if (tpl && token.value == TOKidentifier && | |
2045 | (t = peek(&token), (t->value == TOKcomma || | |
2046 | t->value == TOKrparen || | |
2047 | t->value == TOKdotdotdot))) | |
2048 | { | |
2049 | Identifier *id = Identifier::generateId("__T"); | |
2050 | Loc loc = token.loc; | |
2051 | at = new TypeIdentifier(loc, id); | |
2052 | if (!*tpl) | |
2053 | *tpl = new TemplateParameters(); | |
2054 | TemplateParameter *tp = new TemplateTypeParameter(loc, id, NULL, NULL); | |
2055 | (*tpl)->push(tp); | |
2056 | ||
2057 | ai = token.ident; | |
2058 | nextToken(); | |
2059 | } | |
2060 | else | |
2061 | at = parseType(&ai); | |
2062 | ae = NULL; | |
2063 | if (token.value == TOKassign) // = defaultArg | |
2064 | { nextToken(); | |
2065 | ae = parseDefaultInitExp(); | |
2066 | hasdefault = 1; | |
2067 | } | |
2068 | else | |
2069 | { if (hasdefault) | |
2070 | error("default argument expected for %s", | |
2071 | ai ? ai->toChars() : at->toChars()); | |
2072 | } | |
2073 | if (token.value == TOKdotdotdot) | |
2074 | { /* This is: | |
2075 | * at ai ... | |
2076 | */ | |
2077 | ||
2078 | if (storageClass & (STCout | STCref)) | |
2079 | error("variadic argument cannot be out or ref"); | |
c3a2ba10 | 2080 | varargs = VARARGtypesafe; |
b4c522fa IB |
2081 | parameters->push(new Parameter(storageClass, at, ai, ae)); |
2082 | nextToken(); | |
2083 | break; | |
2084 | } | |
2085 | parameters->push(new Parameter(storageClass, at, ai, ae)); | |
2086 | if (token.value == TOKcomma) | |
2087 | { nextToken(); | |
2088 | goto L1; | |
2089 | } | |
2090 | break; | |
2091 | } | |
2092 | } | |
2093 | break; | |
2094 | } | |
2095 | break; | |
2096 | ||
2097 | L1: ; | |
2098 | } | |
2099 | check(TOKrparen); | |
2100 | *pvarargs = varargs; | |
2101 | return parameters; | |
2102 | } | |
2103 | ||
2104 | ||
2105 | /************************************* | |
2106 | */ | |
2107 | ||
2108 | EnumDeclaration *Parser::parseEnum() | |
2109 | { | |
2110 | EnumDeclaration *e; | |
2111 | Identifier *id; | |
2112 | Type *memtype; | |
2113 | Loc loc = token.loc; | |
2114 | ||
2115 | //printf("Parser::parseEnum()\n"); | |
2116 | nextToken(); | |
2117 | if (token.value == TOKidentifier) | |
2118 | { | |
2119 | id = token.ident; | |
2120 | nextToken(); | |
2121 | } | |
2122 | else | |
2123 | id = NULL; | |
2124 | ||
2125 | if (token.value == TOKcolon) | |
2126 | { | |
2127 | nextToken(); | |
2128 | ||
2129 | int alt = 0; | |
2130 | Loc typeLoc = token.loc; | |
2131 | memtype = parseBasicType(); | |
2132 | memtype = parseDeclarator(memtype, &alt, NULL); | |
2133 | checkCstyleTypeSyntax(typeLoc, memtype, alt, NULL); | |
2134 | } | |
2135 | else | |
2136 | memtype = NULL; | |
2137 | ||
2138 | e = new EnumDeclaration(loc, id, memtype); | |
2139 | if (token.value == TOKsemicolon && id) | |
2140 | nextToken(); | |
2141 | else if (token.value == TOKlcurly) | |
2142 | { | |
2143 | //printf("enum definition\n"); | |
2144 | e->members = new Dsymbols(); | |
2145 | nextToken(); | |
2146 | const utf8_t *comment = token.blockComment; | |
2147 | while (token.value != TOKrcurly) | |
2148 | { | |
2149 | /* Can take the following forms: | |
2150 | * 1. ident | |
2151 | * 2. ident = value | |
2152 | * 3. type ident = value | |
2153 | */ | |
2154 | ||
2155 | loc = token.loc; | |
2156 | ||
2157 | Type *type = NULL; | |
2158 | Identifier *ident = NULL; | |
2159 | Token *tp = peek(&token); | |
2160 | if (token.value == TOKidentifier && | |
2161 | (tp->value == TOKassign || tp->value == TOKcomma || tp->value == TOKrcurly)) | |
2162 | { | |
2163 | ident = token.ident; | |
2164 | type = NULL; | |
2165 | nextToken(); | |
2166 | } | |
2167 | else | |
2168 | { | |
2169 | type = parseType(&ident, NULL); | |
2170 | if (!ident) | |
2171 | error("no identifier for declarator %s", type->toChars()); | |
2172 | if (id || memtype) | |
2173 | error("type only allowed if anonymous enum and no enum type"); | |
2174 | } | |
2175 | ||
2176 | Expression *value; | |
2177 | if (token.value == TOKassign) | |
2178 | { | |
2179 | nextToken(); | |
2180 | value = parseAssignExp(); | |
2181 | } | |
2182 | else | |
2183 | { | |
2184 | value = NULL; | |
2185 | if (type) | |
2186 | error("if type, there must be an initializer"); | |
2187 | } | |
2188 | ||
2189 | EnumMember *em = new EnumMember(loc, ident, value, type); | |
2190 | e->members->push(em); | |
2191 | ||
2192 | if (token.value == TOKrcurly) | |
2193 | ; | |
2194 | else | |
2195 | { | |
2196 | addComment(em, comment); | |
2197 | comment = NULL; | |
2198 | check(TOKcomma); | |
2199 | } | |
2200 | addComment(em, comment); | |
2201 | comment = token.blockComment; | |
2202 | ||
2203 | if (token.value == TOKeof) | |
2204 | { | |
2205 | error("premature end of file"); | |
2206 | break; | |
2207 | } | |
2208 | } | |
2209 | nextToken(); | |
2210 | } | |
2211 | else | |
2212 | error("enum declaration is invalid"); | |
2213 | ||
2214 | //printf("-parseEnum() %s\n", e->toChars()); | |
2215 | return e; | |
2216 | } | |
2217 | ||
2218 | /******************************** | |
2219 | * Parse struct, union, interface, class. | |
2220 | */ | |
2221 | ||
2222 | Dsymbol *Parser::parseAggregate() | |
2223 | { | |
2224 | AggregateDeclaration *a = NULL; | |
2225 | int anon = 0; | |
2226 | Identifier *id; | |
2227 | TemplateParameters *tpl = NULL; | |
2228 | Expression *constraint = NULL; | |
2229 | Loc loc = token.loc; | |
2230 | TOK tok = token.value; | |
2231 | ||
2232 | //printf("Parser::parseAggregate()\n"); | |
2233 | nextToken(); | |
2234 | if (token.value != TOKidentifier) | |
2235 | { | |
2236 | id = NULL; | |
2237 | } | |
2238 | else | |
2239 | { | |
2240 | id = token.ident; | |
2241 | nextToken(); | |
2242 | ||
2243 | if (token.value == TOKlparen) | |
2244 | { | |
2245 | // Class template declaration. | |
2246 | // Gather template parameter list | |
2247 | tpl = parseTemplateParameterList(); | |
2248 | constraint = parseConstraint(); | |
2249 | } | |
2250 | } | |
2251 | ||
2252 | switch (tok) | |
2253 | { | |
2254 | case TOKclass: | |
2255 | case TOKinterface: | |
2256 | { | |
2257 | if (!id) | |
2258 | error(loc, "anonymous classes not allowed"); | |
2259 | ||
2260 | // Collect base class(es) | |
2261 | BaseClasses *baseclasses = NULL; | |
2262 | if (token.value == TOKcolon) | |
2263 | { | |
2264 | nextToken(); | |
2265 | baseclasses = parseBaseClasses(); | |
2266 | ||
2267 | if (tpl) | |
2268 | { | |
2269 | Expression *tempCons = parseConstraint(); | |
2270 | if (tempCons) | |
2271 | { | |
2272 | if (constraint) | |
2273 | error("members expected"); | |
2274 | else | |
2275 | constraint = tempCons; | |
2276 | } | |
2277 | } | |
2278 | ||
2279 | if (token.value != TOKlcurly) | |
2280 | error("members expected"); | |
2281 | } | |
2282 | ||
2283 | if (tok == TOKclass) | |
2284 | { | |
2285 | bool inObject = md && !md->packages && md->id == Id::object; | |
2286 | a = new ClassDeclaration(loc, id, baseclasses, NULL, inObject); | |
2287 | } | |
2288 | else | |
2289 | a = new InterfaceDeclaration(loc, id, baseclasses); | |
2290 | break; | |
2291 | } | |
2292 | ||
2293 | case TOKstruct: | |
2294 | if (id) | |
2295 | { | |
2296 | bool inObject = md && !md->packages && md->id == Id::object; | |
2297 | a = new StructDeclaration(loc, id, inObject); | |
2298 | } | |
2299 | else | |
2300 | anon = 1; | |
2301 | break; | |
2302 | ||
2303 | case TOKunion: | |
2304 | if (id) | |
2305 | a = new UnionDeclaration(loc, id); | |
2306 | else | |
2307 | anon = 2; | |
2308 | break; | |
2309 | ||
2310 | default: | |
2311 | assert(0); | |
2312 | break; | |
2313 | } | |
2314 | if (a && token.value == TOKsemicolon) | |
2315 | { | |
2316 | nextToken(); | |
2317 | } | |
2318 | else if (token.value == TOKlcurly) | |
2319 | { | |
2320 | const Loc lookingForElseSave = lookingForElse; | |
2321 | lookingForElse = Loc(); | |
2322 | //printf("aggregate definition\n"); | |
2323 | nextToken(); | |
2324 | Dsymbols *decl = parseDeclDefs(0); | |
2325 | lookingForElse = lookingForElseSave; | |
2326 | if (token.value != TOKrcurly) | |
2327 | error("} expected following members in %s declaration at %s", | |
2328 | Token::toChars(tok), loc.toChars()); | |
2329 | nextToken(); | |
2330 | if (anon) | |
2331 | { | |
2332 | /* Anonymous structs/unions are more like attributes. | |
2333 | */ | |
2334 | return new AnonDeclaration(loc, anon == 2, decl); | |
2335 | } | |
2336 | else | |
2337 | a->members = decl; | |
2338 | } | |
2339 | else | |
2340 | { | |
2341 | error("{ } expected following %s declaration", Token::toChars(tok)); | |
2342 | a = new StructDeclaration(loc, NULL, false); | |
2343 | } | |
2344 | ||
2345 | if (tpl) | |
2346 | { | |
2347 | // Wrap a template around the aggregate declaration | |
2348 | Dsymbols *decldefs = new Dsymbols(); | |
2349 | decldefs->push(a); | |
2350 | TemplateDeclaration *tempdecl = | |
2351 | new TemplateDeclaration(loc, id, tpl, constraint, decldefs); | |
2352 | return tempdecl; | |
2353 | } | |
2354 | ||
2355 | return a; | |
2356 | } | |
2357 | ||
2358 | /******************************************* | |
2359 | */ | |
2360 | ||
2361 | BaseClasses *Parser::parseBaseClasses() | |
2362 | { | |
2363 | BaseClasses *baseclasses = new BaseClasses(); | |
2364 | ||
2365 | for (; 1; nextToken()) | |
2366 | { | |
2367 | bool prot = false; | |
0a2ee409 | 2368 | Prot protection = Prot(Prot::public_); |
b4c522fa IB |
2369 | switch (token.value) |
2370 | { | |
2371 | case TOKprivate: | |
2372 | prot = true; | |
0a2ee409 | 2373 | protection = Prot(Prot::private_); |
b4c522fa IB |
2374 | nextToken(); |
2375 | break; | |
2376 | case TOKpackage: | |
2377 | prot = true; | |
0a2ee409 | 2378 | protection = Prot(Prot::package_); |
b4c522fa IB |
2379 | nextToken(); |
2380 | break; | |
2381 | case TOKprotected: | |
2382 | prot = true; | |
0a2ee409 | 2383 | protection = Prot(Prot::protected_); |
b4c522fa IB |
2384 | nextToken(); |
2385 | break; | |
2386 | case TOKpublic: | |
2387 | prot = true; | |
0a2ee409 | 2388 | protection = Prot(Prot::public_); |
b4c522fa IB |
2389 | nextToken(); |
2390 | break; | |
2391 | default: break; | |
2392 | } | |
2393 | if (prot) | |
2394 | error("use of base class protection is no longer supported"); | |
2395 | BaseClass *b = new BaseClass(parseBasicType()); | |
2396 | baseclasses->push(b); | |
2397 | if (token.value != TOKcomma) | |
2398 | break; | |
2399 | } | |
2400 | return baseclasses; | |
2401 | } | |
2402 | ||
2403 | /************************************** | |
2404 | * Parse constraint. | |
2405 | * Constraint is of the form: | |
2406 | * if ( ConstraintExpression ) | |
2407 | */ | |
2408 | ||
2409 | Expression *Parser::parseConstraint() | |
2410 | { Expression *e = NULL; | |
2411 | ||
2412 | if (token.value == TOKif) | |
2413 | { | |
2414 | nextToken(); // skip over 'if' | |
2415 | check(TOKlparen); | |
2416 | e = parseExpression(); | |
2417 | check(TOKrparen); | |
2418 | } | |
2419 | return e; | |
2420 | } | |
2421 | ||
2422 | /************************************** | |
2423 | * Parse a TemplateDeclaration. | |
2424 | */ | |
2425 | ||
2426 | TemplateDeclaration *Parser::parseTemplateDeclaration(bool ismixin) | |
2427 | { | |
2428 | TemplateDeclaration *tempdecl; | |
2429 | Identifier *id; | |
2430 | TemplateParameters *tpl; | |
2431 | Dsymbols *decldefs; | |
2432 | Expression *constraint = NULL; | |
2433 | Loc loc = token.loc; | |
2434 | ||
2435 | nextToken(); | |
2436 | if (token.value != TOKidentifier) | |
2437 | { | |
2438 | error("identifier expected following template"); | |
2439 | goto Lerr; | |
2440 | } | |
2441 | id = token.ident; | |
2442 | nextToken(); | |
2443 | tpl = parseTemplateParameterList(); | |
2444 | if (!tpl) | |
2445 | goto Lerr; | |
2446 | ||
2447 | constraint = parseConstraint(); | |
2448 | ||
2449 | if (token.value != TOKlcurly) | |
2450 | { | |
2451 | error("members of template declaration expected"); | |
2452 | goto Lerr; | |
2453 | } | |
2454 | else | |
2455 | decldefs = parseBlock(NULL); | |
2456 | ||
2457 | tempdecl = new TemplateDeclaration(loc, id, tpl, constraint, decldefs, ismixin); | |
2458 | return tempdecl; | |
2459 | ||
2460 | Lerr: | |
2461 | return NULL; | |
2462 | } | |
2463 | ||
2464 | /****************************************** | |
2465 | * Parse template parameter list. | |
2466 | * Input: | |
2467 | * flag 0: parsing "( list )" | |
2468 | * 1: parsing non-empty "list )" | |
2469 | */ | |
2470 | ||
2471 | TemplateParameters *Parser::parseTemplateParameterList(int flag) | |
2472 | { | |
2473 | TemplateParameters *tpl = new TemplateParameters(); | |
2474 | ||
2475 | if (!flag && token.value != TOKlparen) | |
2476 | { error("parenthesized TemplateParameterList expected following TemplateIdentifier"); | |
2477 | goto Lerr; | |
2478 | } | |
2479 | nextToken(); | |
2480 | ||
2481 | // Get array of TemplateParameters | |
2482 | if (flag || token.value != TOKrparen) | |
2483 | { | |
2484 | int isvariadic = 0; | |
2485 | while (token.value != TOKrparen) | |
2486 | { | |
2487 | TemplateParameter *tp; | |
2488 | Loc loc; | |
2489 | Identifier *tp_ident = NULL; | |
2490 | Type *tp_spectype = NULL; | |
2491 | Type *tp_valtype = NULL; | |
2492 | Type *tp_defaulttype = NULL; | |
2493 | Expression *tp_specvalue = NULL; | |
2494 | Expression *tp_defaultvalue = NULL; | |
2495 | Token *t; | |
2496 | ||
2497 | // Get TemplateParameter | |
2498 | ||
2499 | // First, look ahead to see if it is a TypeParameter or a ValueParameter | |
2500 | t = peek(&token); | |
2501 | if (token.value == TOKalias) | |
2502 | { // AliasParameter | |
2503 | nextToken(); | |
2504 | loc = token.loc; // todo | |
2505 | Type *spectype = NULL; | |
2506 | if (isDeclaration(&token, 2, TOKreserved, NULL)) | |
2507 | { | |
2508 | spectype = parseType(&tp_ident); | |
2509 | } | |
2510 | else | |
2511 | { | |
2512 | if (token.value != TOKidentifier) | |
2513 | { | |
2514 | error("identifier expected for template alias parameter"); | |
2515 | goto Lerr; | |
2516 | } | |
2517 | tp_ident = token.ident; | |
2518 | nextToken(); | |
2519 | } | |
2520 | RootObject *spec = NULL; | |
2521 | if (token.value == TOKcolon) // : Type | |
2522 | { | |
2523 | nextToken(); | |
2524 | if (isDeclaration(&token, 0, TOKreserved, NULL)) | |
2525 | spec = parseType(); | |
2526 | else | |
2527 | spec = parseCondExp(); | |
2528 | } | |
2529 | RootObject *def = NULL; | |
2530 | if (token.value == TOKassign) // = Type | |
2531 | { | |
2532 | nextToken(); | |
2533 | if (isDeclaration(&token, 0, TOKreserved, NULL)) | |
2534 | def = parseType(); | |
2535 | else | |
2536 | def = parseCondExp(); | |
2537 | } | |
2538 | tp = new TemplateAliasParameter(loc, tp_ident, spectype, spec, def); | |
2539 | } | |
2540 | else if (t->value == TOKcolon || t->value == TOKassign || | |
2541 | t->value == TOKcomma || t->value == TOKrparen) | |
2542 | { | |
2543 | // TypeParameter | |
2544 | if (token.value != TOKidentifier) | |
2545 | { | |
2546 | error("identifier expected for template type parameter"); | |
2547 | goto Lerr; | |
2548 | } | |
2549 | loc = token.loc; | |
2550 | tp_ident = token.ident; | |
2551 | nextToken(); | |
2552 | if (token.value == TOKcolon) // : Type | |
2553 | { | |
2554 | nextToken(); | |
2555 | tp_spectype = parseType(); | |
2556 | } | |
2557 | if (token.value == TOKassign) // = Type | |
2558 | { | |
2559 | nextToken(); | |
2560 | tp_defaulttype = parseType(); | |
2561 | } | |
2562 | tp = new TemplateTypeParameter(loc, tp_ident, tp_spectype, tp_defaulttype); | |
2563 | } | |
2564 | else if (token.value == TOKidentifier && t->value == TOKdotdotdot) | |
2565 | { | |
2566 | // ident... | |
2567 | if (isvariadic) | |
2568 | error("variadic template parameter must be last"); | |
2569 | isvariadic = 1; | |
2570 | loc = token.loc; | |
2571 | tp_ident = token.ident; | |
2572 | nextToken(); | |
2573 | nextToken(); | |
2574 | tp = new TemplateTupleParameter(loc, tp_ident); | |
2575 | } | |
2576 | else if (token.value == TOKthis) | |
2577 | { | |
2578 | // ThisParameter | |
2579 | nextToken(); | |
2580 | if (token.value != TOKidentifier) | |
2581 | { | |
2582 | error("identifier expected for template this parameter"); | |
2583 | goto Lerr; | |
2584 | } | |
2585 | loc = token.loc; | |
2586 | tp_ident = token.ident; | |
2587 | nextToken(); | |
2588 | if (token.value == TOKcolon) // : Type | |
2589 | { | |
2590 | nextToken(); | |
2591 | tp_spectype = parseType(); | |
2592 | } | |
2593 | if (token.value == TOKassign) // = Type | |
2594 | { | |
2595 | nextToken(); | |
2596 | tp_defaulttype = parseType(); | |
2597 | } | |
2598 | tp = new TemplateThisParameter(loc, tp_ident, tp_spectype, tp_defaulttype); | |
2599 | } | |
2600 | else | |
2601 | { | |
2602 | // ValueParameter | |
2603 | loc = token.loc; // todo | |
2604 | tp_valtype = parseType(&tp_ident); | |
2605 | if (!tp_ident) | |
2606 | { | |
2607 | error("identifier expected for template value parameter"); | |
2608 | tp_ident = Identifier::idPool("error"); | |
2609 | } | |
2610 | if (token.value == TOKcolon) // : CondExpression | |
2611 | { | |
2612 | nextToken(); | |
2613 | tp_specvalue = parseCondExp(); | |
2614 | } | |
2615 | if (token.value == TOKassign) // = CondExpression | |
2616 | { | |
2617 | nextToken(); | |
2618 | tp_defaultvalue = parseDefaultInitExp(); | |
2619 | } | |
2620 | tp = new TemplateValueParameter(loc, tp_ident, tp_valtype, tp_specvalue, tp_defaultvalue); | |
2621 | } | |
2622 | tpl->push(tp); | |
2623 | if (token.value != TOKcomma) | |
2624 | break; | |
2625 | nextToken(); | |
2626 | } | |
2627 | } | |
2628 | check(TOKrparen); | |
2629 | Lerr: | |
2630 | return tpl; | |
2631 | } | |
2632 | ||
2633 | /****************************************** | |
2634 | * Parse template mixin. | |
2635 | * mixin Foo; | |
2636 | * mixin Foo!(args); | |
2637 | * mixin a.b.c!(args).Foo!(args); | |
2638 | * mixin Foo!(args) identifier; | |
2639 | * mixin typeof(expr).identifier!(args); | |
2640 | */ | |
2641 | ||
2642 | Dsymbol *Parser::parseMixin() | |
2643 | { | |
2644 | TemplateMixin *tm; | |
2645 | Identifier *id; | |
2646 | Objects *tiargs; | |
2647 | ||
2648 | //printf("parseMixin()\n"); | |
2649 | Loc locMixin = token.loc; | |
2650 | nextToken(); // skip 'mixin' | |
2651 | ||
2652 | Loc loc = token.loc; | |
2653 | TypeQualified *tqual = NULL; | |
2654 | if (token.value == TOKdot) | |
2655 | { | |
2656 | id = Id::empty; | |
2657 | } | |
2658 | else | |
2659 | { | |
2660 | if (token.value == TOKtypeof) | |
2661 | { | |
2662 | tqual = parseTypeof(); | |
2663 | check(TOKdot); | |
2664 | } | |
2665 | if (token.value != TOKidentifier) | |
2666 | { | |
2667 | error("identifier expected, not %s", token.toChars()); | |
2668 | id = Id::empty; | |
2669 | } | |
2670 | else | |
2671 | id = token.ident; | |
2672 | nextToken(); | |
2673 | } | |
2674 | ||
2675 | while (1) | |
2676 | { | |
2677 | tiargs = NULL; | |
2678 | if (token.value == TOKnot) | |
2679 | { | |
2680 | tiargs = parseTemplateArguments(); | |
2681 | } | |
2682 | ||
2683 | if (tiargs && token.value == TOKdot) | |
2684 | { | |
2685 | TemplateInstance *tempinst = new TemplateInstance(loc, id); | |
2686 | tempinst->tiargs = tiargs; | |
2687 | if (!tqual) | |
2688 | tqual = new TypeInstance(loc, tempinst); | |
2689 | else | |
2690 | tqual->addInst(tempinst); | |
2691 | tiargs = NULL; | |
2692 | } | |
2693 | else | |
2694 | { | |
2695 | if (!tqual) | |
2696 | tqual = new TypeIdentifier(loc, id); | |
2697 | else | |
2698 | tqual->addIdent(id); | |
2699 | } | |
2700 | ||
2701 | if (token.value != TOKdot) | |
2702 | break; | |
2703 | ||
2704 | nextToken(); | |
2705 | if (token.value != TOKidentifier) | |
2706 | { | |
2707 | error("identifier expected following '.' instead of '%s'", token.toChars()); | |
2708 | break; | |
2709 | } | |
2710 | loc = token.loc; | |
2711 | id = token.ident; | |
2712 | nextToken(); | |
2713 | } | |
2714 | ||
2715 | if (token.value == TOKidentifier) | |
2716 | { | |
2717 | id = token.ident; | |
2718 | nextToken(); | |
2719 | } | |
2720 | else | |
2721 | id = NULL; | |
2722 | ||
2723 | tm = new TemplateMixin(locMixin, id, tqual, tiargs); | |
2724 | if (token.value != TOKsemicolon) | |
2725 | error("';' expected after mixin"); | |
2726 | nextToken(); | |
2727 | ||
2728 | return tm; | |
2729 | } | |
2730 | ||
2731 | /****************************************** | |
2732 | * Parse template arguments. | |
2733 | * Input: | |
2734 | * current token is opening '!' | |
2735 | * Output: | |
2736 | * current token is one after closing ')' | |
2737 | */ | |
2738 | ||
2739 | Objects *Parser::parseTemplateArguments() | |
2740 | { | |
2741 | Objects *tiargs; | |
2742 | ||
2743 | nextToken(); | |
2744 | if (token.value == TOKlparen) | |
2745 | { | |
2746 | // ident!(template_arguments) | |
2747 | tiargs = parseTemplateArgumentList(); | |
2748 | } | |
2749 | else | |
2750 | { | |
2751 | // ident!template_argument | |
2752 | tiargs = parseTemplateSingleArgument(); | |
2753 | } | |
2754 | if (token.value == TOKnot) | |
2755 | { | |
2756 | TOK tok = peekNext(); | |
2757 | if (tok != TOKis && tok != TOKin) | |
2758 | { | |
2759 | error("multiple ! arguments are not allowed"); | |
2760 | Lagain: | |
2761 | nextToken(); | |
2762 | if (token.value == TOKlparen) | |
2763 | parseTemplateArgumentList(); | |
2764 | else | |
2765 | parseTemplateSingleArgument(); | |
2766 | if (token.value == TOKnot && (tok = peekNext()) != TOKis && tok != TOKin) | |
2767 | goto Lagain; | |
2768 | } | |
2769 | } | |
2770 | return tiargs; | |
2771 | } | |
2772 | ||
2773 | /****************************************** | |
2774 | * Parse template argument list. | |
2775 | * Input: | |
2776 | * current token is opening '(', | |
2777 | * or ',' for __traits | |
2778 | * Output: | |
2779 | * current token is one after closing ')' | |
2780 | */ | |
2781 | ||
2782 | Objects *Parser::parseTemplateArgumentList() | |
2783 | { | |
2784 | //printf("Parser::parseTemplateArgumentList()\n"); | |
2785 | Objects *tiargs = new Objects(); | |
2786 | TOK endtok = TOKrparen; | |
2787 | assert(token.value == TOKlparen || token.value == TOKcomma); | |
2788 | nextToken(); | |
2789 | ||
2790 | // Get TemplateArgumentList | |
2791 | while (token.value != endtok) | |
2792 | { | |
2793 | // See if it is an Expression or a Type | |
2794 | if (isDeclaration(&token, 0, TOKreserved, NULL)) | |
2795 | { // Template argument is a type | |
2796 | Type *ta = parseType(); | |
2797 | tiargs->push(ta); | |
2798 | } | |
2799 | else | |
2800 | { // Template argument is an expression | |
2801 | Expression *ea = parseAssignExp(); | |
2802 | tiargs->push(ea); | |
2803 | } | |
2804 | if (token.value != TOKcomma) | |
2805 | break; | |
2806 | nextToken(); | |
2807 | } | |
2808 | check(endtok, "template argument list"); | |
2809 | return tiargs; | |
2810 | } | |
2811 | ||
2812 | /***************************** | |
2813 | * Parse single template argument, to support the syntax: | |
2814 | * foo!arg | |
2815 | * Input: | |
2816 | * current token is the arg | |
2817 | */ | |
2818 | ||
2819 | Objects *Parser::parseTemplateSingleArgument() | |
2820 | { | |
2821 | //printf("parseTemplateSingleArgument()\n"); | |
2822 | Objects *tiargs = new Objects(); | |
2823 | Type *ta; | |
2824 | switch (token.value) | |
2825 | { | |
2826 | case TOKidentifier: | |
2827 | ta = new TypeIdentifier(token.loc, token.ident); | |
2828 | goto LabelX; | |
2829 | ||
2830 | case TOKvector: | |
2831 | ta = parseVector(); | |
2832 | goto LabelX; | |
2833 | ||
2834 | case TOKvoid: ta = Type::tvoid; goto LabelX; | |
2835 | case TOKint8: ta = Type::tint8; goto LabelX; | |
2836 | case TOKuns8: ta = Type::tuns8; goto LabelX; | |
2837 | case TOKint16: ta = Type::tint16; goto LabelX; | |
2838 | case TOKuns16: ta = Type::tuns16; goto LabelX; | |
2839 | case TOKint32: ta = Type::tint32; goto LabelX; | |
2840 | case TOKuns32: ta = Type::tuns32; goto LabelX; | |
2841 | case TOKint64: ta = Type::tint64; goto LabelX; | |
2842 | case TOKuns64: ta = Type::tuns64; goto LabelX; | |
2843 | case TOKint128: ta = Type::tint128; goto LabelX; | |
2844 | case TOKuns128: ta = Type::tuns128; goto LabelX; | |
2845 | case TOKfloat32: ta = Type::tfloat32; goto LabelX; | |
2846 | case TOKfloat64: ta = Type::tfloat64; goto LabelX; | |
2847 | case TOKfloat80: ta = Type::tfloat80; goto LabelX; | |
2848 | case TOKimaginary32: ta = Type::timaginary32; goto LabelX; | |
2849 | case TOKimaginary64: ta = Type::timaginary64; goto LabelX; | |
2850 | case TOKimaginary80: ta = Type::timaginary80; goto LabelX; | |
2851 | case TOKcomplex32: ta = Type::tcomplex32; goto LabelX; | |
2852 | case TOKcomplex64: ta = Type::tcomplex64; goto LabelX; | |
2853 | case TOKcomplex80: ta = Type::tcomplex80; goto LabelX; | |
2854 | case TOKbool: ta = Type::tbool; goto LabelX; | |
2855 | case TOKchar: ta = Type::tchar; goto LabelX; | |
2856 | case TOKwchar: ta = Type::twchar; goto LabelX; | |
2857 | case TOKdchar: ta = Type::tdchar; goto LabelX; | |
2858 | LabelX: | |
2859 | tiargs->push(ta); | |
2860 | nextToken(); | |
2861 | break; | |
2862 | ||
2863 | case TOKint32v: | |
2864 | case TOKuns32v: | |
2865 | case TOKint64v: | |
2866 | case TOKuns64v: | |
2867 | case TOKint128v: | |
2868 | case TOKuns128v: | |
2869 | case TOKfloat32v: | |
2870 | case TOKfloat64v: | |
2871 | case TOKfloat80v: | |
2872 | case TOKimaginary32v: | |
2873 | case TOKimaginary64v: | |
2874 | case TOKimaginary80v: | |
2875 | case TOKnull: | |
2876 | case TOKtrue: | |
2877 | case TOKfalse: | |
2878 | case TOKcharv: | |
2879 | case TOKwcharv: | |
2880 | case TOKdcharv: | |
2881 | case TOKstring: | |
2882 | case TOKxstring: | |
2883 | case TOKfile: | |
2884 | case TOKfilefullpath: | |
2885 | case TOKline: | |
2886 | case TOKmodulestring: | |
2887 | case TOKfuncstring: | |
2888 | case TOKprettyfunc: | |
2889 | case TOKthis: | |
2890 | { // Template argument is an expression | |
2891 | Expression *ea = parsePrimaryExp(); | |
2892 | tiargs->push(ea); | |
2893 | break; | |
2894 | } | |
2895 | ||
2896 | default: | |
2897 | error("template argument expected following !"); | |
2898 | break; | |
2899 | } | |
2900 | return tiargs; | |
2901 | } | |
2902 | ||
2903 | Dsymbols *Parser::parseImport() | |
2904 | { | |
2905 | Dsymbols *decldefs = new Dsymbols(); | |
2906 | Identifier *aliasid = NULL; | |
2907 | ||
2908 | int isstatic = token.value == TOKstatic; | |
2909 | if (isstatic) | |
2910 | nextToken(); | |
2911 | ||
2912 | //printf("Parser::parseImport()\n"); | |
2913 | do | |
2914 | { | |
2915 | L1: | |
2916 | nextToken(); | |
2917 | if (token.value != TOKidentifier) | |
2918 | { | |
2919 | error("identifier expected following import"); | |
2920 | break; | |
2921 | } | |
2922 | ||
2923 | Loc loc = token.loc; | |
2924 | Identifier *id = token.ident; | |
2925 | Identifiers *a = NULL; | |
2926 | nextToken(); | |
2927 | if (!aliasid && token.value == TOKassign) | |
2928 | { | |
2929 | aliasid = id; | |
2930 | goto L1; | |
2931 | } | |
2932 | while (token.value == TOKdot) | |
2933 | { | |
2934 | if (!a) | |
2935 | a = new Identifiers(); | |
2936 | a->push(id); | |
2937 | nextToken(); | |
2938 | if (token.value != TOKidentifier) | |
2939 | { | |
2940 | error("identifier expected following package"); | |
2941 | break; | |
2942 | } | |
2943 | id = token.ident; | |
2944 | nextToken(); | |
2945 | } | |
2946 | ||
2947 | Import *s = new Import(loc, a, id, aliasid, isstatic); | |
2948 | decldefs->push(s); | |
2949 | ||
2950 | /* Look for | |
2951 | * : alias=name, alias=name; | |
2952 | * syntax. | |
2953 | */ | |
2954 | if (token.value == TOKcolon) | |
2955 | { | |
2956 | do | |
2957 | { | |
2958 | nextToken(); | |
2959 | if (token.value != TOKidentifier) | |
2960 | { | |
2961 | error("identifier expected following :"); | |
2962 | break; | |
2963 | } | |
2964 | Identifier *alias = token.ident; | |
2965 | Identifier *name; | |
2966 | nextToken(); | |
2967 | if (token.value == TOKassign) | |
2968 | { | |
2969 | nextToken(); | |
2970 | if (token.value != TOKidentifier) | |
2971 | { | |
2972 | error("identifier expected following %s=", alias->toChars()); | |
2973 | break; | |
2974 | } | |
2975 | name = token.ident; | |
2976 | nextToken(); | |
2977 | } | |
2978 | else | |
2979 | { | |
2980 | name = alias; | |
2981 | alias = NULL; | |
2982 | } | |
2983 | s->addAlias(name, alias); | |
2984 | } while (token.value == TOKcomma); | |
2985 | break; // no comma-separated imports of this form | |
2986 | } | |
2987 | ||
2988 | aliasid = NULL; | |
2989 | } while (token.value == TOKcomma); | |
2990 | ||
2991 | if (token.value == TOKsemicolon) | |
2992 | nextToken(); | |
2993 | else | |
2994 | { | |
2995 | error("';' expected"); | |
2996 | nextToken(); | |
2997 | } | |
2998 | ||
2999 | return decldefs; | |
3000 | } | |
3001 | ||
3002 | Type *Parser::parseType(Identifier **pident, TemplateParameters **ptpl) | |
3003 | { | |
3004 | /* Take care of the storage class prefixes that | |
3005 | * serve as type attributes: | |
3006 | * const type | |
3007 | * immutable type | |
3008 | * shared type | |
3009 | * inout type | |
3010 | * inout const type | |
3011 | * shared const type | |
3012 | * shared inout type | |
3013 | * shared inout const type | |
3014 | */ | |
3015 | StorageClass stc = 0; | |
3016 | while (1) | |
3017 | { | |
3018 | switch (token.value) | |
3019 | { | |
3020 | case TOKconst: | |
3021 | if (peekNext() == TOKlparen) | |
3022 | break; // const as type constructor | |
3023 | stc |= STCconst; // const as storage class | |
3024 | nextToken(); | |
3025 | continue; | |
3026 | ||
3027 | case TOKimmutable: | |
3028 | if (peekNext() == TOKlparen) | |
3029 | break; | |
3030 | stc |= STCimmutable; | |
3031 | nextToken(); | |
3032 | continue; | |
3033 | ||
3034 | case TOKshared: | |
3035 | if (peekNext() == TOKlparen) | |
3036 | break; | |
3037 | stc |= STCshared; | |
3038 | nextToken(); | |
3039 | continue; | |
3040 | ||
3041 | case TOKwild: | |
3042 | if (peekNext() == TOKlparen) | |
3043 | break; | |
3044 | stc |= STCwild; | |
3045 | nextToken(); | |
3046 | continue; | |
3047 | ||
3048 | default: | |
3049 | break; | |
3050 | } | |
3051 | break; | |
3052 | } | |
3053 | ||
3054 | Loc typeLoc = token.loc; | |
3055 | ||
3056 | Type *t; | |
3057 | t = parseBasicType(); | |
3058 | ||
3059 | int alt = 0; | |
3060 | t = parseDeclarator(t, &alt, pident, ptpl); | |
3061 | checkCstyleTypeSyntax(typeLoc, t, alt, pident ? *pident : NULL); | |
3062 | ||
3063 | t = t->addSTC(stc); | |
3064 | return t; | |
3065 | } | |
3066 | ||
3067 | Type *Parser::parseBasicType(bool dontLookDotIdents) | |
3068 | { | |
3069 | Type *t; | |
3070 | Loc loc; | |
3071 | Identifier *id; | |
3072 | ||
3073 | //printf("parseBasicType()\n"); | |
3074 | switch (token.value) | |
3075 | { | |
3076 | case TOKvoid: t = Type::tvoid; goto LabelX; | |
3077 | case TOKint8: t = Type::tint8; goto LabelX; | |
3078 | case TOKuns8: t = Type::tuns8; goto LabelX; | |
3079 | case TOKint16: t = Type::tint16; goto LabelX; | |
3080 | case TOKuns16: t = Type::tuns16; goto LabelX; | |
3081 | case TOKint32: t = Type::tint32; goto LabelX; | |
3082 | case TOKuns32: t = Type::tuns32; goto LabelX; | |
ecbb1530 IB |
3083 | case TOKint64: |
3084 | t = Type::tint64; | |
3085 | nextToken(); | |
3086 | if (token.value == TOKint64) // if `long long` | |
3087 | { | |
3088 | error("use `long` for a 64 bit integer instead of `long long`"); | |
3089 | nextToken(); | |
3090 | } | |
3091 | else if (token.value == TOKfloat64) // if `long double` | |
3092 | { | |
3093 | error("use `real` instead of `long double`"); | |
3094 | t = Type::tfloat80; | |
3095 | nextToken(); | |
3096 | ||
3097 | } | |
3098 | break; | |
3099 | ||
b4c522fa IB |
3100 | case TOKuns64: t = Type::tuns64; goto LabelX; |
3101 | case TOKint128: t = Type::tint128; goto LabelX; | |
3102 | case TOKuns128: t = Type::tuns128; goto LabelX; | |
3103 | case TOKfloat32: t = Type::tfloat32; goto LabelX; | |
3104 | case TOKfloat64: t = Type::tfloat64; goto LabelX; | |
3105 | case TOKfloat80: t = Type::tfloat80; goto LabelX; | |
3106 | case TOKimaginary32: t = Type::timaginary32; goto LabelX; | |
3107 | case TOKimaginary64: t = Type::timaginary64; goto LabelX; | |
3108 | case TOKimaginary80: t = Type::timaginary80; goto LabelX; | |
3109 | case TOKcomplex32: t = Type::tcomplex32; goto LabelX; | |
3110 | case TOKcomplex64: t = Type::tcomplex64; goto LabelX; | |
3111 | case TOKcomplex80: t = Type::tcomplex80; goto LabelX; | |
3112 | case TOKbool: t = Type::tbool; goto LabelX; | |
3113 | case TOKchar: t = Type::tchar; goto LabelX; | |
3114 | case TOKwchar: t = Type::twchar; goto LabelX; | |
3115 | case TOKdchar: t = Type::tdchar; goto LabelX; | |
3116 | LabelX: | |
3117 | nextToken(); | |
3118 | break; | |
3119 | ||
3120 | case TOKthis: | |
3121 | case TOKsuper: | |
3122 | case TOKidentifier: | |
3123 | loc = token.loc; | |
3124 | id = token.ident; | |
3125 | nextToken(); | |
3126 | if (token.value == TOKnot) | |
3127 | { | |
3128 | // ident!(template_arguments) | |
3129 | TemplateInstance *tempinst = new TemplateInstance(loc, id); | |
3130 | tempinst->tiargs = parseTemplateArguments(); | |
3131 | t = parseBasicTypeStartingAt(new TypeInstance(loc, tempinst), dontLookDotIdents); | |
3132 | } | |
3133 | else | |
3134 | { | |
3135 | t = parseBasicTypeStartingAt(new TypeIdentifier(loc, id), dontLookDotIdents); | |
3136 | } | |
3137 | break; | |
3138 | ||
3139 | case TOKdot: | |
3140 | // Leading . as in .foo | |
3141 | t = parseBasicTypeStartingAt(new TypeIdentifier(token.loc, Id::empty), dontLookDotIdents); | |
3142 | break; | |
3143 | ||
3144 | case TOKtypeof: | |
3145 | // typeof(expression) | |
3146 | t = parseBasicTypeStartingAt(parseTypeof(), dontLookDotIdents); | |
3147 | break; | |
3148 | ||
3149 | case TOKvector: | |
3150 | t = parseVector(); | |
3151 | break; | |
3152 | ||
5b74dd0a IB |
3153 | case TOKtraits: |
3154 | if (TraitsExp *te = (TraitsExp *) parsePrimaryExp()) | |
3155 | { | |
3156 | if (te->ident && te->args) | |
3157 | { | |
3158 | t = new TypeTraits(token.loc, te); | |
3159 | break; | |
3160 | } | |
3161 | } | |
3162 | t = new TypeError(); | |
3163 | break; | |
3164 | ||
b4c522fa IB |
3165 | case TOKconst: |
3166 | // const(type) | |
3167 | nextToken(); | |
3168 | check(TOKlparen); | |
3169 | t = parseType()->addSTC(STCconst); | |
3170 | check(TOKrparen); | |
3171 | break; | |
3172 | ||
3173 | case TOKimmutable: | |
3174 | // immutable(type) | |
3175 | nextToken(); | |
3176 | check(TOKlparen); | |
3177 | t = parseType()->addSTC(STCimmutable); | |
3178 | check(TOKrparen); | |
3179 | break; | |
3180 | ||
3181 | case TOKshared: | |
3182 | // shared(type) | |
3183 | nextToken(); | |
3184 | check(TOKlparen); | |
3185 | t = parseType()->addSTC(STCshared); | |
3186 | check(TOKrparen); | |
3187 | break; | |
3188 | ||
3189 | case TOKwild: | |
3190 | // wild(type) | |
3191 | nextToken(); | |
3192 | check(TOKlparen); | |
3193 | t = parseType()->addSTC(STCwild); | |
3194 | check(TOKrparen); | |
3195 | break; | |
3196 | ||
3197 | default: | |
3198 | error("basic type expected, not %s", token.toChars()); | |
3199 | t = Type::terror; | |
3200 | break; | |
3201 | } | |
3202 | return t; | |
3203 | } | |
3204 | ||
3205 | Type *Parser::parseBasicTypeStartingAt(TypeQualified *tid, bool dontLookDotIdents) | |
3206 | { | |
3207 | Type *maybeArray = NULL; | |
3208 | // See https://issues.dlang.org/show_bug.cgi?id=1215 | |
3209 | // A basic type can look like MyType (typical case), but also: | |
3210 | // MyType.T -> A type | |
3211 | // MyType[expr] -> Either a static array of MyType or a type (iif MyType is a Ttuple) | |
3212 | // MyType[expr].T -> A type. | |
3213 | // MyType[expr].T[expr] -> Either a static array of MyType[expr].T or a type | |
3214 | // (iif MyType[expr].T is a Ttuple) | |
3215 | while (1) | |
3216 | { | |
3217 | switch (token.value) | |
3218 | { | |
3219 | case TOKdot: | |
3220 | { | |
3221 | nextToken(); | |
3222 | if (token.value != TOKidentifier) | |
3223 | { | |
3224 | error("identifier expected following '.' instead of '%s'", token.toChars()); | |
3225 | break; | |
3226 | } | |
3227 | if (maybeArray) | |
3228 | { | |
3229 | // This is actually a TypeTuple index, not an {a/s}array. | |
3230 | // We need to have a while loop to unwind all index taking: | |
3231 | // T[e1][e2].U -> T, addIndex(e1), addIndex(e2) | |
3232 | Objects dimStack; | |
3233 | Type *t = maybeArray; | |
3234 | while (true) | |
3235 | { | |
3236 | if (t->ty == Tsarray) | |
3237 | { | |
3238 | // The index expression is an Expression. | |
3239 | TypeSArray *a = (TypeSArray *)t; | |
3240 | dimStack.push(a->dim->syntaxCopy()); | |
3241 | t = a->next->syntaxCopy(); | |
3242 | } | |
3243 | else if (t->ty == Taarray) | |
3244 | { | |
3245 | // The index expression is a Type. It will be interpreted as an expression at semantic time. | |
3246 | TypeAArray *a = (TypeAArray *)t; | |
3247 | dimStack.push(a->index->syntaxCopy()); | |
3248 | t = a->next->syntaxCopy(); | |
3249 | } | |
3250 | else | |
3251 | { | |
3252 | break; | |
3253 | } | |
3254 | } | |
2cbc99d1 | 3255 | assert(dimStack.length > 0); |
b4c522fa IB |
3256 | // We're good. Replay indices in the reverse order. |
3257 | tid = (TypeQualified *)t; | |
2cbc99d1 | 3258 | while (dimStack.length) |
b4c522fa IB |
3259 | { |
3260 | tid->addIndex(dimStack.pop()); | |
3261 | } | |
3262 | maybeArray = NULL; | |
3263 | } | |
3264 | Loc loc = token.loc; | |
3265 | Identifier *id = token.ident; | |
3266 | nextToken(); | |
3267 | if (token.value == TOKnot) | |
3268 | { | |
3269 | TemplateInstance *tempinst = new TemplateInstance(loc, id); | |
3270 | tempinst->tiargs = parseTemplateArguments(); | |
3271 | tid->addInst(tempinst); | |
3272 | } | |
3273 | else | |
3274 | tid->addIdent(id); | |
3275 | continue; | |
3276 | } | |
3277 | case TOKlbracket: | |
3278 | { | |
3279 | if (dontLookDotIdents) // workaround for Bugzilla 14911 | |
3280 | goto Lend; | |
3281 | ||
3282 | nextToken(); | |
3283 | Type *t = maybeArray ? maybeArray : (Type *)tid; | |
3284 | if (token.value == TOKrbracket) | |
3285 | { | |
3286 | // It's a dynamic array, and we're done: | |
3287 | // T[].U does not make sense. | |
3288 | t = new TypeDArray(t); | |
3289 | nextToken(); | |
3290 | return t; | |
3291 | } | |
3292 | else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
3293 | { | |
3294 | // This can be one of two things: | |
3295 | // 1 - an associative array declaration, T[type] | |
3296 | // 2 - an associative array declaration, T[expr] | |
3297 | // These can only be disambiguated later. | |
3298 | Type *index = parseType(); // [ type ] | |
3299 | maybeArray = new TypeAArray(t, index); | |
3300 | check(TOKrbracket); | |
3301 | } | |
3302 | else | |
3303 | { | |
3304 | // This can be one of three things: | |
3305 | // 1 - an static array declaration, T[expr] | |
3306 | // 2 - a slice, T[expr .. expr] | |
3307 | // 3 - a template parameter pack index expression, T[expr].U | |
3308 | // 1 and 3 can only be disambiguated later. | |
3309 | //printf("it's type[expression]\n"); | |
3310 | inBrackets++; | |
3311 | Expression *e = parseAssignExp(); // [ expression ] | |
3312 | if (token.value == TOKslice) | |
3313 | { | |
3314 | // It's a slice, and we're done. | |
3315 | nextToken(); | |
3316 | Expression *e2 = parseAssignExp(); // [ exp .. exp ] | |
3317 | t = new TypeSlice(t, e, e2); | |
3318 | inBrackets--; | |
3319 | check(TOKrbracket); | |
3320 | return t; | |
3321 | } | |
3322 | else | |
3323 | { | |
3324 | maybeArray = new TypeSArray(t, e); | |
3325 | inBrackets--; | |
3326 | check(TOKrbracket); | |
3327 | continue; | |
3328 | } | |
3329 | } | |
3330 | break; | |
3331 | } | |
3332 | default: | |
3333 | goto Lend; | |
3334 | } | |
3335 | } | |
3336 | Lend: | |
3337 | return maybeArray ? maybeArray : (Type *)tid; | |
3338 | } | |
3339 | ||
3340 | /****************************************** | |
3341 | * Parse things that follow the initial type t. | |
3342 | * t * | |
3343 | * t [] | |
3344 | * t [type] | |
3345 | * t [expression] | |
3346 | * t [expression .. expression] | |
3347 | * t function | |
3348 | * t delegate | |
3349 | */ | |
3350 | ||
3351 | Type *Parser::parseBasicType2(Type *t) | |
3352 | { | |
3353 | //printf("parseBasicType2()\n"); | |
3354 | while (1) | |
3355 | { | |
3356 | switch (token.value) | |
3357 | { | |
3358 | case TOKmul: | |
3359 | t = new TypePointer(t); | |
3360 | nextToken(); | |
3361 | continue; | |
3362 | ||
3363 | case TOKlbracket: | |
3364 | // Handle []. Make sure things like | |
3365 | // int[3][1] a; | |
3366 | // is (array[1] of array[3] of int) | |
3367 | nextToken(); | |
3368 | if (token.value == TOKrbracket) | |
3369 | { | |
3370 | t = new TypeDArray(t); // [] | |
3371 | nextToken(); | |
3372 | } | |
3373 | else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
3374 | { | |
3375 | // It's an associative array declaration | |
3376 | //printf("it's an associative array\n"); | |
3377 | Type *index = parseType(); // [ type ] | |
3378 | t = new TypeAArray(t, index); | |
3379 | check(TOKrbracket); | |
3380 | } | |
3381 | else | |
3382 | { | |
3383 | //printf("it's type[expression]\n"); | |
3384 | inBrackets++; | |
3385 | Expression *e = parseAssignExp(); // [ expression ] | |
3386 | if (token.value == TOKslice) | |
3387 | { | |
3388 | nextToken(); | |
3389 | Expression *e2 = parseAssignExp(); // [ exp .. exp ] | |
3390 | t = new TypeSlice(t, e, e2); | |
3391 | } | |
3392 | else | |
3393 | { | |
3394 | t = new TypeSArray(t,e); | |
3395 | } | |
3396 | inBrackets--; | |
3397 | check(TOKrbracket); | |
3398 | } | |
3399 | continue; | |
3400 | ||
3401 | case TOKdelegate: | |
3402 | case TOKfunction: | |
3403 | { | |
3404 | // Handle delegate declaration: | |
3405 | // t delegate(parameter list) nothrow pure | |
3406 | // t function(parameter list) nothrow pure | |
3407 | TOK save = token.value; | |
3408 | nextToken(); | |
3409 | ||
c3a2ba10 | 3410 | VarArg varargs; |
b4c522fa IB |
3411 | Parameters *parameters = parseParameters(&varargs); |
3412 | ||
3413 | StorageClass stc = parsePostfix(STCundefined, NULL); | |
c3a2ba10 IB |
3414 | TypeFunction *tf = new TypeFunction(ParameterList(parameters, varargs), |
3415 | t, linkage, stc); | |
b4c522fa IB |
3416 | if (stc & (STCconst | STCimmutable | STCshared | STCwild | STCreturn)) |
3417 | { | |
3418 | if (save == TOKfunction) | |
3419 | error("const/immutable/shared/inout/return attributes are only valid for non-static member functions"); | |
3420 | else | |
3421 | tf = (TypeFunction *)tf->addSTC(stc); | |
3422 | } | |
3423 | ||
3424 | if (save == TOKdelegate) | |
3425 | t = new TypeDelegate(tf); | |
3426 | else | |
3427 | t = new TypePointer(tf); // pointer to function | |
3428 | continue; | |
3429 | } | |
3430 | ||
3431 | default: | |
3432 | return t; | |
3433 | } | |
3434 | assert(0); | |
3435 | } | |
3436 | assert(0); | |
3437 | return NULL; | |
3438 | } | |
3439 | ||
3440 | Type *Parser::parseDeclarator(Type *t, int *palt, Identifier **pident, | |
3441 | TemplateParameters **tpl, StorageClass storageClass, int *pdisable, Expressions **pudas) | |
3442 | { | |
3443 | //printf("parseDeclarator(tpl = %p)\n", tpl); | |
3444 | t = parseBasicType2(t); | |
3445 | ||
3446 | Type *ts; | |
3447 | switch (token.value) | |
3448 | { | |
3449 | case TOKidentifier: | |
3450 | if (pident) | |
3451 | *pident = token.ident; | |
3452 | else | |
3453 | error("unexpected identifer '%s' in declarator", token.ident->toChars()); | |
3454 | ts = t; | |
3455 | nextToken(); | |
3456 | break; | |
3457 | ||
3458 | case TOKlparen: | |
3459 | { | |
3460 | // like: T (*fp)(); | |
3461 | // like: T ((*fp))(); | |
3462 | if (peekNext() == TOKmul || | |
3463 | peekNext() == TOKlparen) | |
3464 | { | |
3465 | /* Parse things with parentheses around the identifier, like: | |
3466 | * int (*ident[3])[] | |
3467 | * although the D style would be: | |
3468 | * int[]*[3] ident | |
3469 | */ | |
3470 | *palt |= 1; | |
3471 | nextToken(); | |
3472 | ts = parseDeclarator(t, palt, pident); | |
3473 | check(TOKrparen); | |
3474 | break; | |
3475 | } | |
3476 | ts = t; | |
3477 | ||
3478 | Token *peekt = &token; | |
3479 | /* Completely disallow C-style things like: | |
3480 | * T (a); | |
3481 | * Improve error messages for the common bug of a missing return type | |
3482 | * by looking to see if (a) looks like a parameter list. | |
3483 | */ | |
3484 | if (isParameters(&peekt)) | |
3485 | { | |
3486 | error("function declaration without return type. (Note that constructors are always named 'this')"); | |
3487 | } | |
3488 | else | |
3489 | error("unexpected ( in declarator"); | |
3490 | break; | |
3491 | } | |
3492 | ||
3493 | default: | |
3494 | ts = t; | |
3495 | break; | |
3496 | } | |
3497 | ||
3498 | // parse DeclaratorSuffixes | |
3499 | while (1) | |
3500 | { | |
3501 | switch (token.value) | |
3502 | { | |
3503 | #if CARRAYDECL | |
3504 | /* Support C style array syntax: | |
3505 | * int ident[] | |
3506 | * as opposed to D-style: | |
3507 | * int[] ident | |
3508 | */ | |
3509 | case TOKlbracket: | |
3510 | { | |
3511 | // This is the old C-style post [] syntax. | |
3512 | TypeNext *ta; | |
3513 | nextToken(); | |
3514 | if (token.value == TOKrbracket) | |
3515 | { | |
3516 | // It's a dynamic array | |
3517 | ta = new TypeDArray(t); // [] | |
3518 | nextToken(); | |
3519 | *palt |= 2; | |
3520 | } | |
3521 | else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
3522 | { | |
3523 | // It's an associative array | |
3524 | //printf("it's an associative array\n"); | |
3525 | Type *index = parseType(); // [ type ] | |
3526 | check(TOKrbracket); | |
3527 | ta = new TypeAArray(t, index); | |
3528 | *palt |= 2; | |
3529 | } | |
3530 | else | |
3531 | { | |
3532 | //printf("It's a static array\n"); | |
3533 | Expression *e = parseAssignExp(); // [ expression ] | |
3534 | ta = new TypeSArray(t, e); | |
3535 | check(TOKrbracket); | |
3536 | *palt |= 2; | |
3537 | } | |
3538 | ||
3539 | /* Insert ta into | |
3540 | * ts -> ... -> t | |
3541 | * so that | |
3542 | * ts -> ... -> ta -> t | |
3543 | */ | |
3544 | Type **pt; | |
3545 | for (pt = &ts; *pt != t; pt = &((TypeNext *)*pt)->next) | |
3546 | ; | |
3547 | *pt = ta; | |
3548 | continue; | |
3549 | } | |
3550 | #endif | |
3551 | case TOKlparen: | |
3552 | { | |
3553 | if (tpl) | |
3554 | { | |
3555 | Token *tk = peekPastParen(&token); | |
3556 | if (tk->value == TOKlparen) | |
3557 | { | |
3558 | /* Look ahead to see if this is (...)(...), | |
3559 | * i.e. a function template declaration | |
3560 | */ | |
3561 | //printf("function template declaration\n"); | |
3562 | ||
3563 | // Gather template parameter list | |
3564 | *tpl = parseTemplateParameterList(); | |
3565 | } | |
3566 | else if (tk->value == TOKassign) | |
3567 | { | |
3568 | /* or (...) =, | |
3569 | * i.e. a variable template declaration | |
3570 | */ | |
3571 | //printf("variable template declaration\n"); | |
3572 | *tpl = parseTemplateParameterList(); | |
3573 | break; | |
3574 | } | |
3575 | } | |
3576 | ||
c3a2ba10 | 3577 | VarArg varargs; |
b4c522fa IB |
3578 | Parameters *parameters = parseParameters(&varargs); |
3579 | ||
3580 | /* Parse const/immutable/shared/inout/nothrow/pure/return postfix | |
3581 | */ | |
3582 | StorageClass stc = parsePostfix(storageClass, pudas); | |
3583 | // merge prefix storage classes | |
c3a2ba10 IB |
3584 | Type *tf = new TypeFunction(ParameterList(parameters, varargs), |
3585 | t, linkage, stc); | |
b4c522fa IB |
3586 | tf = tf->addSTC(stc); |
3587 | if (pdisable) | |
3588 | *pdisable = stc & STCdisable ? 1 : 0; | |
3589 | ||
3590 | /* Insert tf into | |
3591 | * ts -> ... -> t | |
3592 | * so that | |
3593 | * ts -> ... -> tf -> t | |
3594 | */ | |
3595 | Type **pt; | |
3596 | for (pt = &ts; *pt != t; pt = &((TypeNext *)*pt)->next) | |
3597 | ; | |
3598 | *pt = tf; | |
3599 | break; | |
3600 | } | |
3601 | default: break; | |
3602 | } | |
3603 | break; | |
3604 | } | |
3605 | ||
3606 | return ts; | |
3607 | } | |
3608 | ||
3609 | void Parser::parseStorageClasses(StorageClass &storage_class, LINK &link, | |
3610 | bool &setAlignment, Expression *&ealign, Expressions *&udas) | |
3611 | { | |
3612 | StorageClass stc; | |
3613 | bool sawLinkage = false; // seen a linkage declaration | |
3614 | ||
3615 | while (1) | |
3616 | { | |
3617 | switch (token.value) | |
3618 | { | |
3619 | case TOKconst: | |
3620 | if (peek(&token)->value == TOKlparen) | |
3621 | break; // const as type constructor | |
3622 | stc = STCconst; // const as storage class | |
3623 | goto L1; | |
3624 | ||
3625 | case TOKimmutable: | |
3626 | if (peek(&token)->value == TOKlparen) | |
3627 | break; | |
3628 | stc = STCimmutable; | |
3629 | goto L1; | |
3630 | ||
3631 | case TOKshared: | |
3632 | if (peek(&token)->value == TOKlparen) | |
3633 | break; | |
3634 | stc = STCshared; | |
3635 | goto L1; | |
3636 | ||
3637 | case TOKwild: | |
3638 | if (peek(&token)->value == TOKlparen) | |
3639 | break; | |
3640 | stc = STCwild; | |
3641 | goto L1; | |
3642 | ||
3643 | case TOKstatic: stc = STCstatic; goto L1; | |
3644 | case TOKfinal: stc = STCfinal; goto L1; | |
3645 | case TOKauto: stc = STCauto; goto L1; | |
3646 | case TOKscope: stc = STCscope; goto L1; | |
3647 | case TOKoverride: stc = STCoverride; goto L1; | |
3648 | case TOKabstract: stc = STCabstract; goto L1; | |
3649 | case TOKsynchronized: stc = STCsynchronized; goto L1; | |
3650 | case TOKdeprecated: stc = STCdeprecated; goto L1; | |
3651 | case TOKnothrow: stc = STCnothrow; goto L1; | |
3652 | case TOKpure: stc = STCpure; goto L1; | |
3653 | case TOKref: stc = STCref; goto L1; | |
3654 | case TOKgshared: stc = STCgshared; goto L1; | |
3655 | case TOKenum: stc = STCmanifest; goto L1; | |
3656 | case TOKat: | |
3657 | { | |
3658 | stc = parseAttribute(&udas); | |
3659 | if (stc) | |
3660 | goto L1; | |
3661 | continue; | |
3662 | } | |
3663 | L1: | |
3664 | storage_class = appendStorageClass(storage_class, stc); | |
3665 | nextToken(); | |
3666 | continue; | |
3667 | ||
3668 | case TOKextern: | |
3669 | { | |
3670 | if (peek(&token)->value != TOKlparen) | |
3671 | { | |
3672 | stc = STCextern; | |
3673 | goto L1; | |
3674 | } | |
3675 | ||
3676 | if (sawLinkage) | |
3677 | error("redundant linkage declaration"); | |
3678 | sawLinkage = true; | |
3679 | Identifiers *idents = NULL; | |
3680 | CPPMANGLE cppmangle = CPPMANGLEdefault; | |
9503d7b1 IB |
3681 | bool cppMangleOnly = false; |
3682 | link = parseLinkage(&idents, &cppmangle, &cppMangleOnly); | |
b4c522fa IB |
3683 | if (idents) |
3684 | { | |
3685 | error("C++ name spaces not allowed here"); | |
3686 | delete idents; | |
3687 | } | |
3688 | if (cppmangle != CPPMANGLEdefault) | |
3689 | { | |
3690 | error("C++ mangle declaration not allowed here"); | |
3691 | } | |
3692 | continue; | |
3693 | } | |
3694 | ||
3695 | case TOKalign: | |
3696 | { | |
3697 | nextToken(); | |
3698 | setAlignment = true; | |
3699 | if (token.value == TOKlparen) | |
3700 | { | |
3701 | nextToken(); | |
3702 | ealign = parseExpression(); | |
3703 | check(TOKrparen); | |
3704 | } | |
3705 | continue; | |
3706 | } | |
3707 | default: | |
3708 | break; | |
3709 | } | |
3710 | break; | |
3711 | } | |
3712 | } | |
3713 | ||
3714 | /********************************** | |
3715 | * Parse Declarations. | |
3716 | * These can be: | |
3717 | * 1. declarations at global/class level | |
3718 | * 2. declarations at statement level | |
3719 | * Return array of Declaration *'s. | |
3720 | */ | |
3721 | ||
3722 | Dsymbols *Parser::parseDeclarations(bool autodecl, PrefixAttributes *pAttrs, const utf8_t *comment) | |
3723 | { | |
3724 | StorageClass storage_class = STCundefined; | |
3725 | Type *ts; | |
3726 | Type *t; | |
3727 | Type *tfirst; | |
3728 | Identifier *ident; | |
3729 | TOK tok = TOKreserved; | |
3730 | LINK link = linkage; | |
3731 | bool setAlignment = false; | |
3732 | Expression *ealign = NULL; | |
3733 | Loc loc = token.loc; | |
3734 | Expressions *udas = NULL; | |
3735 | Token *tk; | |
3736 | ||
3737 | //printf("parseDeclarations() %s\n", token.toChars()); | |
3738 | if (!comment) | |
3739 | comment = token.blockComment; | |
3740 | ||
3741 | if (autodecl) | |
3742 | { | |
3743 | ts = NULL; // infer type | |
3744 | goto L2; | |
3745 | } | |
3746 | ||
3747 | if (token.value == TOKalias) | |
3748 | { | |
3749 | tok = token.value; | |
3750 | nextToken(); | |
3751 | ||
3752 | /* Look for: | |
3753 | * alias identifier this; | |
3754 | */ | |
3755 | if (token.value == TOKidentifier && peekNext() == TOKthis) | |
3756 | { | |
3757 | AliasThis *s = new AliasThis(loc, token.ident); | |
3758 | nextToken(); | |
3759 | check(TOKthis); | |
3760 | check(TOKsemicolon); | |
3761 | Dsymbols *a = new Dsymbols(); | |
3762 | a->push(s); | |
3763 | addComment(s, comment); | |
3764 | return a; | |
3765 | } | |
3766 | /* Look for: | |
3767 | * alias identifier = type; | |
3768 | * alias identifier(...) = type; | |
3769 | */ | |
3770 | if (token.value == TOKidentifier && | |
3771 | skipParensIf(peek(&token), &tk) && | |
3772 | tk->value == TOKassign) | |
3773 | { | |
3774 | Dsymbols *a = new Dsymbols(); | |
3775 | while (1) | |
3776 | { | |
3777 | ident = token.ident; | |
3778 | nextToken(); | |
3779 | TemplateParameters *tpl = NULL; | |
3780 | if (token.value == TOKlparen) | |
3781 | tpl = parseTemplateParameterList(); | |
3782 | check(TOKassign); | |
3783 | ||
3784 | Declaration *v; | |
3785 | if (token.value == TOKfunction || | |
3786 | token.value == TOKdelegate || | |
3787 | (token.value == TOKlparen && | |
3788 | skipAttributes(peekPastParen(&token), &tk) && | |
3789 | (tk->value == TOKgoesto || tk->value == TOKlcurly)) || | |
3790 | token.value == TOKlcurly || | |
3791 | (token.value == TOKidentifier && peekNext() == TOKgoesto)) | |
3792 | { | |
3793 | // function (parameters) { statements... } | |
3794 | // delegate (parameters) { statements... } | |
3795 | // (parameters) { statements... } | |
3796 | // (parameters) => expression | |
3797 | // { statements... } | |
3798 | // identifier => expression | |
3799 | ||
3800 | Dsymbol *s = parseFunctionLiteral(); | |
3801 | v = new AliasDeclaration(loc, ident, s); | |
3802 | } | |
3803 | else | |
3804 | { | |
3805 | // StorageClasses type | |
3806 | ||
3807 | storage_class = STCundefined; | |
3808 | link = linkage; | |
3809 | setAlignment = false; | |
3810 | ealign = NULL; | |
3811 | udas = NULL; | |
3812 | parseStorageClasses(storage_class, link, setAlignment, ealign, udas); | |
3813 | ||
3814 | if (udas) | |
3815 | error("user defined attributes not allowed for %s declarations", Token::toChars(tok)); | |
3816 | ||
3817 | t = parseType(); | |
3818 | v = new AliasDeclaration(loc, ident, t); | |
3819 | } | |
3820 | v->storage_class = storage_class; | |
3821 | ||
3822 | Dsymbol *s = v; | |
3823 | if (tpl) | |
3824 | { | |
3825 | Dsymbols *a2 = new Dsymbols(); | |
3826 | a2->push(s); | |
3827 | TemplateDeclaration *tempdecl = | |
3828 | new TemplateDeclaration(loc, ident, tpl, NULL, a2); | |
3829 | s = tempdecl; | |
3830 | } | |
3831 | if (setAlignment) | |
3832 | { | |
3833 | Dsymbols *ax = new Dsymbols(); | |
3834 | ax->push(s); | |
3835 | s = new AlignDeclaration(v->loc, ealign, ax); | |
3836 | } | |
3837 | if (link != linkage) | |
3838 | { | |
3839 | Dsymbols *a2 = new Dsymbols(); | |
3840 | a2->push(s); | |
3841 | s = new LinkDeclaration(link, a2); | |
3842 | } | |
3843 | a->push(s); | |
3844 | ||
3845 | switch (token.value) | |
3846 | { | |
3847 | case TOKsemicolon: | |
3848 | nextToken(); | |
3849 | addComment(s, comment); | |
3850 | break; | |
3851 | case TOKcomma: | |
3852 | nextToken(); | |
3853 | addComment(s, comment); | |
3854 | if (token.value != TOKidentifier) | |
3855 | { | |
3856 | error("identifier expected following comma, not %s", token.toChars()); | |
3857 | break; | |
3858 | } | |
3859 | if (peekNext() != TOKassign && peekNext() != TOKlparen) | |
3860 | { | |
3861 | error("= expected following identifier"); | |
3862 | nextToken(); | |
3863 | break; | |
3864 | } | |
3865 | continue; | |
3866 | default: | |
3867 | error("semicolon expected to close %s declaration", Token::toChars(tok)); | |
3868 | break; | |
3869 | } | |
3870 | break; | |
3871 | } | |
3872 | return a; | |
3873 | } | |
3874 | ||
3875 | // alias StorageClasses type ident; | |
3876 | } | |
3877 | ||
3878 | parseStorageClasses(storage_class, link, setAlignment, ealign, udas); | |
3879 | ||
3880 | if (token.value == TOKstruct || | |
3881 | token.value == TOKunion || | |
3882 | token.value == TOKclass || | |
3883 | token.value == TOKinterface) | |
3884 | { | |
3885 | Dsymbol *s = parseAggregate(); | |
3886 | Dsymbols *a = new Dsymbols(); | |
3887 | a->push(s); | |
3888 | ||
3889 | if (storage_class) | |
3890 | { | |
3891 | s = new StorageClassDeclaration(storage_class, a); | |
3892 | a = new Dsymbols(); | |
3893 | a->push(s); | |
3894 | } | |
3895 | if (setAlignment) | |
3896 | { | |
3897 | s = new AlignDeclaration(s->loc, ealign, a); | |
3898 | a = new Dsymbols(); | |
3899 | a->push(s); | |
3900 | } | |
3901 | if (link != linkage) | |
3902 | { | |
3903 | s = new LinkDeclaration(link, a); | |
3904 | a = new Dsymbols(); | |
3905 | a->push(s); | |
3906 | } | |
3907 | if (udas) | |
3908 | { | |
3909 | s = new UserAttributeDeclaration(udas, a); | |
3910 | a = new Dsymbols(); | |
3911 | a->push(s); | |
3912 | } | |
3913 | ||
3914 | addComment(s, comment); | |
3915 | return a; | |
3916 | } | |
3917 | ||
3918 | /* Look for auto initializers: | |
3919 | * storage_class identifier = initializer; | |
3920 | * storage_class identifier(...) = initializer; | |
3921 | */ | |
3922 | if ((storage_class || udas) && | |
3923 | token.value == TOKidentifier && | |
3924 | skipParensIf(peek(&token), &tk) && | |
3925 | tk->value == TOKassign) | |
3926 | { | |
3927 | Dsymbols *a = parseAutoDeclarations(storage_class, comment); | |
3928 | if (udas) | |
3929 | { | |
3930 | Dsymbol *s = new UserAttributeDeclaration(udas, a); | |
3931 | a = new Dsymbols(); | |
3932 | a->push(s); | |
3933 | } | |
3934 | return a; | |
3935 | } | |
3936 | ||
3937 | /* Look for return type inference for template functions. | |
3938 | */ | |
3939 | if ((storage_class || udas) && token.value == TOKidentifier && skipParens(peek(&token), &tk) && | |
3940 | skipAttributes(tk, &tk) && | |
3941 | (tk->value == TOKlparen || tk->value == TOKlcurly || tk->value == TOKin || tk->value == TOKout || | |
3942 | tk->value == TOKdo || (tk->value == TOKidentifier && tk->ident == Id::_body))) | |
3943 | { | |
3944 | ts = NULL; | |
3945 | } | |
3946 | else | |
3947 | { | |
3948 | ts = parseBasicType(); | |
3949 | ts = parseBasicType2(ts); | |
3950 | } | |
3951 | ||
3952 | L2: | |
3953 | tfirst = NULL; | |
3954 | Dsymbols *a = new Dsymbols(); | |
3955 | ||
3956 | if (pAttrs) | |
3957 | { | |
3958 | storage_class |= pAttrs->storageClass; | |
3959 | //pAttrs->storageClass = STCundefined; | |
3960 | } | |
3961 | ||
3962 | while (1) | |
3963 | { | |
3964 | TemplateParameters *tpl = NULL; | |
3965 | int disable; | |
3966 | int alt = 0; | |
3967 | ||
3968 | loc = token.loc; | |
3969 | ident = NULL; | |
3970 | t = parseDeclarator(ts, &alt, &ident, &tpl, storage_class, &disable, &udas); | |
3971 | assert(t); | |
3972 | if (!tfirst) | |
3973 | tfirst = t; | |
3974 | else if (t != tfirst) | |
3975 | error("multiple declarations must have the same type, not %s and %s", | |
3976 | tfirst->toChars(), t->toChars()); | |
3977 | bool isThis = (t->ty == Tident && ((TypeIdentifier *)t)->ident == Id::This && token.value == TOKassign); | |
3978 | if (ident) | |
3979 | checkCstyleTypeSyntax(loc, t, alt, ident); | |
3980 | else if (!isThis) | |
3981 | error("no identifier for declarator %s", t->toChars()); | |
3982 | ||
3983 | if (tok == TOKalias) | |
3984 | { | |
3985 | Declaration *v; | |
3986 | Initializer *init = NULL; | |
3987 | ||
3988 | /* Aliases can no longer have multiple declarators, storage classes, | |
3989 | * linkages, or auto declarations. | |
3990 | * These never made any sense, anyway. | |
3991 | * The code below needs to be fixed to reject them. | |
3992 | * The grammar has already been fixed to preclude them. | |
3993 | */ | |
3994 | ||
3995 | if (udas) | |
3996 | error("user defined attributes not allowed for %s declarations", Token::toChars(tok)); | |
3997 | ||
3998 | if (token.value == TOKassign) | |
3999 | { | |
4000 | nextToken(); | |
4001 | init = parseInitializer(); | |
4002 | } | |
4003 | if (init) | |
4004 | { | |
4005 | if (isThis) | |
4006 | error("cannot use syntax 'alias this = %s', use 'alias %s this' instead", | |
4007 | init->toChars(), init->toChars()); | |
4008 | else | |
4009 | error("alias cannot have initializer"); | |
4010 | } | |
4011 | v = new AliasDeclaration(loc, ident, t); | |
4012 | ||
4013 | v->storage_class = storage_class; | |
4014 | if (pAttrs) | |
4015 | { | |
4016 | /* AliasDeclaration distinguish @safe, @system, @trusted atttributes | |
4017 | * on prefix and postfix. | |
4018 | * @safe alias void function() FP1; | |
4019 | * alias @safe void function() FP2; // FP2 is not @safe | |
4020 | * alias void function() @safe FP3; | |
4021 | */ | |
4022 | pAttrs->storageClass &= (STCsafe | STCsystem | STCtrusted); | |
4023 | } | |
4024 | Dsymbol *s = v; | |
4025 | ||
4026 | if (link != linkage) | |
4027 | { | |
4028 | Dsymbols *ax = new Dsymbols(); | |
4029 | ax->push(v); | |
4030 | s = new LinkDeclaration(link, ax); | |
4031 | } | |
4032 | a->push(s); | |
4033 | switch (token.value) | |
4034 | { | |
4035 | case TOKsemicolon: | |
4036 | nextToken(); | |
4037 | addComment(s, comment); | |
4038 | break; | |
4039 | ||
4040 | case TOKcomma: | |
4041 | nextToken(); | |
4042 | addComment(s, comment); | |
4043 | continue; | |
4044 | ||
4045 | default: | |
4046 | error("semicolon expected to close %s declaration", Token::toChars(tok)); | |
4047 | break; | |
4048 | } | |
4049 | } | |
4050 | else if (t->ty == Tfunction) | |
4051 | { | |
4052 | Expression *constraint = NULL; | |
4053 | ||
4054 | //printf("%s funcdecl t = %s, storage_class = x%lx\n", loc.toChars(), t->toChars(), storage_class); | |
4055 | FuncDeclaration *f = | |
4056 | new FuncDeclaration(loc, Loc(), ident, storage_class | (disable ? STCdisable : 0), t); | |
4057 | if (pAttrs) | |
4058 | pAttrs->storageClass = STCundefined; | |
4059 | if (tpl) | |
4060 | constraint = parseConstraint(); | |
4061 | Dsymbol *s = parseContracts(f); | |
4062 | Identifier *tplIdent = s->ident; | |
4063 | if (link != linkage) | |
4064 | { | |
4065 | Dsymbols *ax = new Dsymbols(); | |
4066 | ax->push(s); | |
4067 | s = new LinkDeclaration(link, ax); | |
4068 | } | |
4069 | if (udas) | |
4070 | { | |
4071 | Dsymbols *ax = new Dsymbols(); | |
4072 | ax->push(s); | |
4073 | s = new UserAttributeDeclaration(udas, ax); | |
4074 | } | |
4075 | ||
4076 | /* A template parameter list means it's a function template | |
4077 | */ | |
4078 | if (tpl) | |
4079 | { | |
4080 | // Wrap a template around the function declaration | |
4081 | Dsymbols *decldefs = new Dsymbols(); | |
4082 | decldefs->push(s); | |
4083 | TemplateDeclaration *tempdecl = | |
4084 | new TemplateDeclaration(loc, tplIdent, tpl, constraint, decldefs); | |
4085 | s = tempdecl; | |
4086 | ||
4087 | if (storage_class & STCstatic) | |
4088 | { | |
4089 | assert(f->storage_class & STCstatic); | |
4090 | f->storage_class &= ~STCstatic; | |
4091 | ||
4092 | Dsymbols *ax = new Dsymbols(); | |
4093 | ax->push(s); | |
4094 | s = new StorageClassDeclaration(STCstatic, ax); | |
4095 | } | |
4096 | } | |
4097 | a->push(s); | |
4098 | addComment(s, comment); | |
4099 | } | |
4100 | else if (ident) | |
4101 | { | |
4102 | Initializer *init = NULL; | |
4103 | if (token.value == TOKassign) | |
4104 | { | |
4105 | nextToken(); | |
4106 | init = parseInitializer(); | |
4107 | } | |
4108 | ||
4109 | VarDeclaration *v = new VarDeclaration(loc, t, ident, init); | |
4110 | v->storage_class = storage_class; | |
4111 | if (pAttrs) | |
4112 | pAttrs->storageClass = STCundefined; | |
4113 | ||
4114 | Dsymbol *s = v; | |
4115 | ||
4116 | if (tpl && init) | |
4117 | { | |
4118 | Dsymbols *a2 = new Dsymbols(); | |
4119 | a2->push(s); | |
4120 | TemplateDeclaration *tempdecl = | |
4121 | new TemplateDeclaration(loc, ident, tpl, NULL, a2, 0); | |
4122 | s = tempdecl; | |
4123 | } | |
4124 | if (link != linkage) | |
4125 | { | |
4126 | Dsymbols *ax = new Dsymbols(); | |
4127 | ax->push(s); | |
4128 | s = new LinkDeclaration(link, ax); | |
4129 | } | |
4130 | if (udas) | |
4131 | { | |
4132 | Dsymbols *ax = new Dsymbols(); | |
4133 | ax->push(s); | |
4134 | s = new UserAttributeDeclaration(udas, ax); | |
4135 | } | |
4136 | a->push(s); | |
4137 | switch (token.value) | |
4138 | { | |
4139 | case TOKsemicolon: | |
4140 | nextToken(); | |
4141 | addComment(s, comment); | |
4142 | break; | |
4143 | ||
4144 | case TOKcomma: | |
4145 | nextToken(); | |
4146 | addComment(s, comment); | |
4147 | continue; | |
4148 | ||
4149 | default: | |
4150 | error("semicolon expected, not '%s'", token.toChars()); | |
4151 | break; | |
4152 | } | |
4153 | } | |
4154 | break; | |
4155 | } | |
4156 | return a; | |
4157 | } | |
4158 | ||
4159 | Dsymbol *Parser::parseFunctionLiteral() | |
4160 | { | |
4161 | Loc loc = token.loc; | |
4162 | ||
4163 | TemplateParameters *tpl = NULL; | |
4164 | Parameters *parameters = NULL; | |
c3a2ba10 | 4165 | VarArg varargs = VARARGnone; |
b4c522fa IB |
4166 | Type *tret = NULL; |
4167 | StorageClass stc = 0; | |
4168 | TOK save = TOKreserved; | |
4169 | ||
4170 | switch (token.value) | |
4171 | { | |
4172 | case TOKfunction: | |
4173 | case TOKdelegate: | |
4174 | save = token.value; | |
4175 | nextToken(); | |
4176 | if (token.value != TOKlparen && token.value != TOKlcurly) | |
4177 | { | |
4178 | // function type (parameters) { statements... } | |
4179 | // delegate type (parameters) { statements... } | |
4180 | tret = parseBasicType(); | |
4181 | tret = parseBasicType2(tret); // function return type | |
4182 | } | |
4183 | ||
4184 | if (token.value == TOKlparen) | |
4185 | { | |
4186 | // function (parameters) { statements... } | |
4187 | // delegate (parameters) { statements... } | |
4188 | } | |
4189 | else | |
4190 | { | |
4191 | // function { statements... } | |
4192 | // delegate { statements... } | |
4193 | break; | |
4194 | } | |
4195 | /* fall through */ | |
4196 | ||
4197 | case TOKlparen: | |
4198 | { | |
4199 | // (parameters) => expression | |
4200 | // (parameters) { statements... } | |
4201 | parameters = parseParameters(&varargs, &tpl); | |
4202 | stc = parsePostfix(STCundefined, NULL); | |
4203 | if (StorageClass modStc = stc & STC_TYPECTOR) | |
4204 | { | |
4205 | if (save == TOKfunction) | |
4206 | { | |
4207 | OutBuffer buf; | |
4208 | stcToBuffer(&buf, modStc); | |
fced594b | 4209 | error("function literal cannot be %s", buf.peekChars()); |
b4c522fa IB |
4210 | } |
4211 | else | |
4212 | save = TOKdelegate; | |
4213 | } | |
4214 | break; | |
4215 | } | |
4216 | case TOKlcurly: | |
4217 | // { statements... } | |
4218 | break; | |
4219 | ||
4220 | case TOKidentifier: | |
4221 | { | |
4222 | // identifier => expression | |
4223 | parameters = new Parameters(); | |
4224 | Identifier *id = Identifier::generateId("__T"); | |
4225 | Type *t = new TypeIdentifier(loc, id); | |
4226 | parameters->push(new Parameter(0, t, token.ident, NULL)); | |
4227 | ||
4228 | tpl = new TemplateParameters(); | |
4229 | TemplateParameter *tp = new TemplateTypeParameter(loc, id, NULL, NULL); | |
4230 | tpl->push(tp); | |
4231 | ||
4232 | nextToken(); | |
4233 | break; | |
4234 | } | |
4235 | default: | |
4236 | assert(0); | |
4237 | } | |
4238 | ||
4239 | if (!parameters) | |
4240 | parameters = new Parameters(); | |
c3a2ba10 IB |
4241 | TypeFunction *tf = new TypeFunction(ParameterList(parameters, varargs), |
4242 | tret, linkage, stc); | |
b4c522fa IB |
4243 | tf = (TypeFunction *)tf->addSTC(stc); |
4244 | FuncLiteralDeclaration *fd = new FuncLiteralDeclaration(loc, Loc(), tf, save, NULL); | |
4245 | ||
4246 | if (token.value == TOKgoesto) | |
4247 | { | |
4248 | check(TOKgoesto); | |
4249 | Loc returnloc = token.loc; | |
4250 | Expression *ae = parseAssignExp(); | |
4251 | fd->fbody = new ReturnStatement(returnloc, ae); | |
4252 | fd->endloc = token.loc; | |
4253 | } | |
4254 | else | |
4255 | { | |
4256 | parseContracts(fd); | |
4257 | } | |
4258 | ||
4259 | if (tpl) | |
4260 | { | |
4261 | // Wrap a template around function fd | |
4262 | Dsymbols *decldefs = new Dsymbols(); | |
4263 | decldefs->push(fd); | |
4264 | return new TemplateDeclaration(fd->loc, fd->ident, tpl, NULL, decldefs, false, true); | |
4265 | } | |
4266 | else | |
4267 | return fd; | |
4268 | } | |
4269 | ||
4270 | /***************************************** | |
4271 | * Parse auto declarations of the form: | |
4272 | * storageClass ident = init, ident = init, ... ; | |
4273 | * and return the array of them. | |
4274 | * Starts with token on the first ident. | |
4275 | * Ends with scanner past closing ';' | |
4276 | */ | |
4277 | ||
4278 | Dsymbols *Parser::parseAutoDeclarations(StorageClass storageClass, const utf8_t *comment) | |
4279 | { | |
4280 | //printf("parseAutoDeclarations\n"); | |
4281 | Token *tk; | |
4282 | Dsymbols *a = new Dsymbols; | |
4283 | ||
4284 | while (1) | |
4285 | { | |
4286 | Loc loc = token.loc; | |
4287 | Identifier *ident = token.ident; | |
4288 | nextToken(); // skip over ident | |
4289 | ||
4290 | TemplateParameters *tpl = NULL; | |
4291 | if (token.value == TOKlparen) | |
4292 | tpl = parseTemplateParameterList(); | |
4293 | ||
4294 | check(TOKassign); // skip over '=' | |
4295 | Initializer *init = parseInitializer(); | |
4296 | VarDeclaration *v = new VarDeclaration(loc, NULL, ident, init); | |
4297 | v->storage_class = storageClass; | |
4298 | ||
4299 | Dsymbol *s = v; | |
4300 | if (tpl) | |
4301 | { | |
4302 | Dsymbols *a2 = new Dsymbols(); | |
4303 | a2->push(v); | |
4304 | TemplateDeclaration *tempdecl = | |
4305 | new TemplateDeclaration(loc, ident, tpl, NULL, a2, 0); | |
4306 | s = tempdecl; | |
4307 | } | |
4308 | a->push(s); | |
4309 | switch (token.value) | |
4310 | { | |
4311 | case TOKsemicolon: | |
4312 | nextToken(); | |
4313 | addComment(s, comment); | |
4314 | break; | |
4315 | ||
4316 | case TOKcomma: | |
4317 | nextToken(); | |
4318 | if (!(token.value == TOKidentifier && | |
4319 | skipParensIf(peek(&token), &tk) && | |
4320 | tk->value == TOKassign)) | |
4321 | { | |
4322 | error("identifier expected following comma"); | |
4323 | break; | |
4324 | } | |
4325 | addComment(s, comment); | |
4326 | continue; | |
4327 | ||
4328 | default: | |
4329 | error("semicolon expected following auto declaration, not '%s'", token.toChars()); | |
4330 | break; | |
4331 | } | |
4332 | break; | |
4333 | } | |
4334 | return a; | |
4335 | } | |
4336 | ||
4337 | /***************************************** | |
4338 | * Parse contracts following function declaration. | |
4339 | */ | |
4340 | ||
4341 | FuncDeclaration *Parser::parseContracts(FuncDeclaration *f) | |
4342 | { | |
4343 | LINK linksave = linkage; | |
4344 | ||
4345 | bool literal = f->isFuncLiteralDeclaration() != NULL; | |
4346 | ||
4347 | // The following is irrelevant, as it is overridden by sc->linkage in | |
4348 | // TypeFunction::semantic | |
4349 | linkage = LINKd; // nested functions have D linkage | |
4350 | L1: | |
4351 | switch (token.value) | |
4352 | { | |
4353 | case TOKlcurly: | |
4354 | if (f->frequire || f->fensure) | |
4355 | error("missing body { ... } after in or out"); | |
4356 | f->fbody = parseStatement(PSsemi); | |
4357 | f->endloc = endloc; | |
4358 | break; | |
4359 | ||
4360 | case TOKidentifier: | |
4361 | if (token.ident != Id::_body) | |
4362 | goto Ldefault; | |
4363 | /* fall through */ | |
4364 | ||
4365 | case TOKdo: | |
4366 | nextToken(); | |
4367 | f->fbody = parseStatement(PScurly); | |
4368 | f->endloc = endloc; | |
4369 | break; | |
4370 | ||
4371 | case TOKin: | |
4372 | nextToken(); | |
4373 | if (f->frequire) | |
4374 | error("redundant 'in' statement"); | |
4375 | f->frequire = parseStatement(PScurly | PSscope); | |
4376 | goto L1; | |
4377 | ||
4378 | case TOKout: | |
4379 | // parse: out (identifier) { statement } | |
4380 | nextToken(); | |
4381 | if (token.value != TOKlcurly) | |
4382 | { | |
4383 | check(TOKlparen); | |
4384 | if (token.value != TOKidentifier) | |
4385 | error("(identifier) following 'out' expected, not %s", token.toChars()); | |
4386 | f->outId = token.ident; | |
4387 | nextToken(); | |
4388 | check(TOKrparen); | |
4389 | } | |
4390 | if (f->fensure) | |
4391 | error("redundant 'out' statement"); | |
4392 | f->fensure = parseStatement(PScurly | PSscope); | |
4393 | goto L1; | |
4394 | ||
4395 | case TOKsemicolon: | |
4396 | if (!literal) | |
4397 | { | |
4398 | // Bugzilla 15799: Semicolon becomes a part of function declaration | |
4399 | // only when neither of contracts exists. | |
4400 | if (!f->frequire && !f->fensure) | |
4401 | nextToken(); | |
4402 | break; | |
4403 | } | |
4404 | /* fall through */ | |
4405 | ||
4406 | default: | |
4407 | Ldefault: | |
4408 | if (literal) | |
4409 | { | |
4410 | const char *sbody = (f->frequire || f->fensure) ? "body " : ""; | |
4411 | error("missing %s{ ... } for function literal", sbody); | |
4412 | } | |
4413 | else if (!f->frequire && !f->fensure) // allow these even with no body | |
4414 | { | |
4415 | error("semicolon expected following function declaration"); | |
4416 | } | |
4417 | break; | |
4418 | } | |
4419 | if (literal && !f->fbody) | |
4420 | { | |
4421 | // Set empty function body for error recovery | |
4422 | f->fbody = new CompoundStatement(Loc(), (Statement *)NULL); | |
4423 | } | |
4424 | ||
4425 | linkage = linksave; | |
4426 | ||
4427 | return f; | |
4428 | } | |
4429 | ||
4430 | /***************************************** | |
4431 | * Parse initializer for variable declaration. | |
4432 | */ | |
4433 | ||
4434 | Initializer *Parser::parseInitializer() | |
4435 | { | |
4436 | StructInitializer *is; | |
4437 | ArrayInitializer *ia; | |
4438 | ExpInitializer *ie; | |
4439 | Expression *e; | |
4440 | Identifier *id; | |
4441 | Initializer *value; | |
4442 | int comma; | |
4443 | Loc loc = token.loc; | |
4444 | Token *t; | |
4445 | int braces; | |
4446 | int brackets; | |
4447 | ||
4448 | switch (token.value) | |
4449 | { | |
4450 | case TOKlcurly: | |
4451 | /* Scan ahead to see if it is a struct initializer or | |
4452 | * a function literal. | |
4453 | * If it contains a ';', it is a function literal. | |
4454 | * Treat { } as a struct initializer. | |
4455 | */ | |
4456 | braces = 1; | |
4457 | for (t = peek(&token); 1; t = peek(t)) | |
4458 | { | |
4459 | switch (t->value) | |
4460 | { | |
4461 | case TOKsemicolon: | |
4462 | case TOKreturn: | |
4463 | goto Lexpression; | |
4464 | ||
4465 | case TOKlcurly: | |
4466 | braces++; | |
4467 | continue; | |
4468 | ||
4469 | case TOKrcurly: | |
4470 | if (--braces == 0) | |
4471 | break; | |
4472 | continue; | |
4473 | ||
4474 | case TOKeof: | |
4475 | break; | |
4476 | ||
4477 | default: | |
4478 | continue; | |
4479 | } | |
4480 | break; | |
4481 | } | |
4482 | ||
4483 | is = new StructInitializer(loc); | |
4484 | nextToken(); | |
4485 | comma = 2; | |
4486 | while (1) | |
4487 | { | |
4488 | switch (token.value) | |
4489 | { | |
4490 | case TOKidentifier: | |
4491 | if (comma == 1) | |
4492 | error("comma expected separating field initializers"); | |
4493 | t = peek(&token); | |
4494 | if (t->value == TOKcolon) | |
4495 | { | |
4496 | id = token.ident; | |
4497 | nextToken(); | |
4498 | nextToken(); // skip over ':' | |
4499 | } | |
4500 | else | |
4501 | { id = NULL; | |
4502 | } | |
4503 | value = parseInitializer(); | |
4504 | is->addInit(id, value); | |
4505 | comma = 1; | |
4506 | continue; | |
4507 | ||
4508 | case TOKcomma: | |
4509 | if (comma == 2) | |
4510 | error("expression expected, not ','"); | |
4511 | nextToken(); | |
4512 | comma = 2; | |
4513 | continue; | |
4514 | ||
4515 | case TOKrcurly: // allow trailing comma's | |
4516 | nextToken(); | |
4517 | break; | |
4518 | ||
4519 | case TOKeof: | |
4520 | error("found EOF instead of initializer"); | |
4521 | break; | |
4522 | ||
4523 | default: | |
4524 | if (comma == 1) | |
4525 | error("comma expected separating field initializers"); | |
4526 | value = parseInitializer(); | |
4527 | is->addInit(NULL, value); | |
4528 | comma = 1; | |
4529 | continue; | |
4530 | //error("found '%s' instead of field initializer", token.toChars()); | |
4531 | //break; | |
4532 | } | |
4533 | break; | |
4534 | } | |
4535 | return is; | |
4536 | ||
4537 | case TOKlbracket: | |
4538 | /* Scan ahead to see if it is an array initializer or | |
4539 | * an expression. | |
4540 | * If it ends with a ';' ',' or '}', it is an array initializer. | |
4541 | */ | |
4542 | brackets = 1; | |
4543 | for (t = peek(&token); 1; t = peek(t)) | |
4544 | { | |
4545 | switch (t->value) | |
4546 | { | |
4547 | case TOKlbracket: | |
4548 | brackets++; | |
4549 | continue; | |
4550 | ||
4551 | case TOKrbracket: | |
4552 | if (--brackets == 0) | |
4553 | { t = peek(t); | |
4554 | if (t->value != TOKsemicolon && | |
4555 | t->value != TOKcomma && | |
4556 | t->value != TOKrbracket && | |
4557 | t->value != TOKrcurly) | |
4558 | goto Lexpression; | |
4559 | break; | |
4560 | } | |
4561 | continue; | |
4562 | ||
4563 | case TOKeof: | |
4564 | break; | |
4565 | ||
4566 | default: | |
4567 | continue; | |
4568 | } | |
4569 | break; | |
4570 | } | |
4571 | ||
4572 | ia = new ArrayInitializer(loc); | |
4573 | nextToken(); | |
4574 | comma = 2; | |
4575 | while (1) | |
4576 | { | |
4577 | switch (token.value) | |
4578 | { | |
4579 | default: | |
4580 | if (comma == 1) | |
4581 | { error("comma expected separating array initializers, not %s", token.toChars()); | |
4582 | nextToken(); | |
4583 | break; | |
4584 | } | |
4585 | e = parseAssignExp(); | |
4586 | if (!e) | |
4587 | break; | |
4588 | if (token.value == TOKcolon) | |
4589 | { | |
4590 | nextToken(); | |
4591 | value = parseInitializer(); | |
4592 | } | |
4593 | else | |
4594 | { value = new ExpInitializer(e->loc, e); | |
4595 | e = NULL; | |
4596 | } | |
4597 | ia->addInit(e, value); | |
4598 | comma = 1; | |
4599 | continue; | |
4600 | ||
4601 | case TOKlcurly: | |
4602 | case TOKlbracket: | |
4603 | if (comma == 1) | |
4604 | error("comma expected separating array initializers, not %s", token.toChars()); | |
4605 | value = parseInitializer(); | |
4606 | if (token.value == TOKcolon) | |
4607 | { | |
4608 | nextToken(); | |
4609 | e = initializerToExpression(value); | |
4610 | value = parseInitializer(); | |
4611 | } | |
4612 | else | |
4613 | e = NULL; | |
4614 | ia->addInit(e, value); | |
4615 | comma = 1; | |
4616 | continue; | |
4617 | ||
4618 | case TOKcomma: | |
4619 | if (comma == 2) | |
4620 | error("expression expected, not ','"); | |
4621 | nextToken(); | |
4622 | comma = 2; | |
4623 | continue; | |
4624 | ||
4625 | case TOKrbracket: // allow trailing comma's | |
4626 | nextToken(); | |
4627 | break; | |
4628 | ||
4629 | case TOKeof: | |
4630 | error("found '%s' instead of array initializer", token.toChars()); | |
4631 | break; | |
4632 | } | |
4633 | break; | |
4634 | } | |
4635 | return ia; | |
4636 | ||
4637 | case TOKvoid: | |
4638 | t = peek(&token); | |
4639 | if (t->value == TOKsemicolon || t->value == TOKcomma) | |
4640 | { | |
4641 | nextToken(); | |
4642 | return new VoidInitializer(loc); | |
4643 | } | |
4644 | goto Lexpression; | |
4645 | ||
4646 | default: | |
4647 | Lexpression: | |
4648 | e = parseAssignExp(); | |
4649 | ie = new ExpInitializer(loc, e); | |
4650 | return ie; | |
4651 | } | |
4652 | } | |
4653 | ||
4654 | /***************************************** | |
4655 | * Parses default argument initializer expression that is an assign expression, | |
4656 | * with special handling for __FILE__, __FILE_FULL_PATH__, __LINE__, __MODULE__, __FUNCTION__, and __PRETTY_FUNCTION__. | |
4657 | */ | |
4658 | ||
4659 | Expression *Parser::parseDefaultInitExp() | |
4660 | { | |
4661 | if (token.value == TOKfile || | |
4662 | token.value == TOKfilefullpath || | |
4663 | token.value == TOKline || | |
4664 | token.value == TOKmodulestring || | |
4665 | token.value == TOKfuncstring || | |
4666 | token.value == TOKprettyfunc) | |
4667 | { | |
4668 | Token *t = peek(&token); | |
4669 | if (t->value == TOKcomma || t->value == TOKrparen) | |
4670 | { | |
4671 | Expression *e = NULL; | |
4672 | if (token.value == TOKfile) | |
4673 | e = new FileInitExp(token.loc, TOKfile); | |
4674 | else if (token.value == TOKfilefullpath) | |
4675 | e = new FileInitExp(token.loc, TOKfilefullpath); | |
4676 | else if (token.value == TOKline) | |
4677 | e = new LineInitExp(token.loc); | |
4678 | else if (token.value == TOKmodulestring) | |
4679 | e = new ModuleInitExp(token.loc); | |
4680 | else if (token.value == TOKfuncstring) | |
4681 | e = new FuncInitExp(token.loc); | |
4682 | else if (token.value == TOKprettyfunc) | |
4683 | e = new PrettyFuncInitExp(token.loc); | |
4684 | else | |
4685 | assert(0); | |
4686 | nextToken(); | |
4687 | return e; | |
4688 | } | |
4689 | } | |
4690 | ||
4691 | Expression *e = parseAssignExp(); | |
4692 | return e; | |
4693 | } | |
4694 | ||
4695 | /***************************************** | |
4696 | */ | |
4697 | ||
4698 | void Parser::checkDanglingElse(Loc elseloc) | |
4699 | { | |
4700 | if (token.value != TOKelse && | |
4701 | token.value != TOKcatch && | |
4702 | token.value != TOKfinally && | |
4703 | lookingForElse.linnum != 0) | |
4704 | { | |
4705 | warning(elseloc, "else is dangling, add { } after condition at %s", lookingForElse.toChars()); | |
4706 | } | |
4707 | } | |
4708 | ||
4709 | void Parser::checkCstyleTypeSyntax(Loc loc, Type *t, int alt, Identifier *ident) | |
4710 | { | |
4711 | if (!alt) | |
4712 | return; | |
4713 | ||
4714 | const char *sp = !ident ? "" : " "; | |
4715 | const char *s = !ident ? "" : ident->toChars(); | |
4716 | if (alt & 1) // contains C-style function pointer syntax | |
4717 | error(loc, "instead of C-style syntax, use D-style '%s%s%s'", t->toChars(), sp, s); | |
4718 | else | |
4719 | ::warning(loc, "instead of C-style syntax, use D-style syntax '%s%s%s'", t->toChars(), sp, s); | |
4720 | ||
4721 | } | |
4722 | ||
5b74dd0a IB |
4723 | /***************************************** |
4724 | * Parses `foreach` statements, `static foreach` statements and | |
4725 | * `static foreach` declarations. The template parameter | |
4726 | * `isStatic` is true, iff a `static foreach` should be parsed. | |
4727 | * If `isStatic` is true, `isDecl` can be true to indicate that a | |
4728 | * `static foreach` declaration should be parsed. | |
4729 | */ | |
4730 | Statement *Parser::parseForeach(Loc loc, bool *isRange, bool isDecl) | |
4731 | { | |
4732 | TOK op = token.value; | |
4733 | ||
4734 | nextToken(); | |
4735 | check(TOKlparen); | |
4736 | ||
4737 | Parameters *parameters = new Parameters(); | |
4738 | ||
4739 | while (1) | |
4740 | { | |
4741 | Identifier *ai = NULL; | |
4742 | Type *at; | |
4743 | ||
4744 | StorageClass storageClass = 0; | |
4745 | StorageClass stc = 0; | |
4746 | Lagain: | |
4747 | if (stc) | |
4748 | { | |
4749 | storageClass = appendStorageClass(storageClass, stc); | |
4750 | nextToken(); | |
4751 | } | |
4752 | switch (token.value) | |
4753 | { | |
4754 | case TOKref: | |
4755 | stc = STCref; | |
4756 | goto Lagain; | |
4757 | ||
4758 | case TOKenum: | |
4759 | stc = STCmanifest; | |
4760 | goto Lagain; | |
4761 | ||
4762 | case TOKalias: | |
4763 | storageClass = appendStorageClass(storageClass, STCalias); | |
4764 | nextToken(); | |
4765 | break; | |
4766 | ||
4767 | case TOKconst: | |
4768 | if (peekNext() != TOKlparen) | |
4769 | { | |
4770 | stc = STCconst; | |
4771 | goto Lagain; | |
4772 | } | |
4773 | break; | |
4774 | ||
4775 | case TOKimmutable: | |
4776 | if (peekNext() != TOKlparen) | |
4777 | { | |
4778 | stc = STCimmutable; | |
4779 | goto Lagain; | |
4780 | } | |
4781 | break; | |
4782 | ||
4783 | case TOKshared: | |
4784 | if (peekNext() != TOKlparen) | |
4785 | { | |
4786 | stc = STCshared; | |
4787 | goto Lagain; | |
4788 | } | |
4789 | break; | |
4790 | ||
4791 | case TOKwild: | |
4792 | if (peekNext() != TOKlparen) | |
4793 | { | |
4794 | stc = STCwild; | |
4795 | goto Lagain; | |
4796 | } | |
4797 | break; | |
4798 | ||
4799 | default: | |
4800 | break; | |
4801 | } | |
4802 | if (token.value == TOKidentifier) | |
4803 | { | |
4804 | Token *t = peek(&token); | |
4805 | if (t->value == TOKcomma || t->value == TOKsemicolon) | |
4806 | { ai = token.ident; | |
4807 | at = NULL; // infer argument type | |
4808 | nextToken(); | |
4809 | goto Larg; | |
4810 | } | |
4811 | } | |
4812 | at = parseType(&ai); | |
4813 | if (!ai) | |
4814 | error("no identifier for declarator %s", at->toChars()); | |
4815 | Larg: | |
4816 | Parameter *p = new Parameter(storageClass, at, ai, NULL); | |
4817 | parameters->push(p); | |
4818 | if (token.value == TOKcomma) | |
4819 | { nextToken(); | |
4820 | continue; | |
4821 | } | |
4822 | break; | |
4823 | } | |
4824 | check(TOKsemicolon); | |
4825 | ||
4826 | Expression *aggr = parseExpression(); | |
2cbc99d1 | 4827 | if (token.value == TOKslice && parameters->length == 1) |
5b74dd0a IB |
4828 | { |
4829 | Parameter *p = (*parameters)[0]; | |
4830 | delete parameters; | |
4831 | nextToken(); | |
4832 | Expression *upr = parseExpression(); | |
4833 | check(TOKrparen); | |
4834 | Loc endloc; | |
4835 | Statement *body = (!isDecl) ? parseStatement(0, NULL, &endloc) : NULL; | |
4836 | if (isRange) | |
4837 | *isRange = true; | |
4838 | return new ForeachRangeStatement(loc, op, p, aggr, upr, body, endloc); | |
4839 | } | |
4840 | else | |
4841 | { | |
4842 | check(TOKrparen); | |
4843 | Loc endloc; | |
4844 | Statement *body = (!isDecl) ? parseStatement(0, NULL, &endloc) : NULL; | |
4845 | if (isRange) | |
4846 | *isRange = false; | |
4847 | return new ForeachStatement(loc, op, parameters, aggr, body, endloc); | |
4848 | } | |
4849 | } | |
4850 | ||
4851 | Dsymbol *Parser::parseForeachStaticDecl(Loc loc, Dsymbol **pLastDecl) | |
4852 | { | |
4853 | nextToken(); | |
4854 | ||
4855 | bool isRange = false; | |
4856 | Statement *s = parseForeach(loc, &isRange, true); | |
4857 | ||
4858 | return new StaticForeachDeclaration( | |
4859 | new StaticForeach(loc, isRange ? NULL : (ForeachStatement *)s, | |
4860 | isRange ? (ForeachRangeStatement *)s : NULL), | |
4861 | parseBlock(pLastDecl) | |
4862 | ); | |
4863 | } | |
4864 | ||
4865 | Statement *Parser::parseForeachStatic(Loc loc) | |
4866 | { | |
4867 | nextToken(); | |
4868 | ||
4869 | bool isRange = false; | |
4870 | Statement *s = parseForeach(loc, &isRange, false); | |
4871 | ||
4872 | return new StaticForeachStatement(loc, | |
4873 | new StaticForeach(loc, isRange ? NULL : (ForeachStatement *)s, | |
4874 | isRange ? (ForeachRangeStatement *)s : NULL) | |
4875 | ); | |
4876 | } | |
4877 | ||
b4c522fa IB |
4878 | /***************************************** |
4879 | * Input: | |
4880 | * flags PSxxxx | |
4881 | * Output: | |
4882 | * pEndloc if { ... statements ... }, store location of closing brace, otherwise loc of first token of next statement | |
4883 | */ | |
4884 | ||
4885 | Statement *Parser::parseStatement(int flags, const utf8_t** endPtr, Loc *pEndloc) | |
4886 | { | |
4887 | Statement *s = NULL; | |
4888 | Condition *cond; | |
4889 | Statement *ifbody; | |
4890 | Statement *elsebody; | |
4891 | bool isfinal; | |
4892 | Loc loc = token.loc; | |
4893 | ||
4894 | //printf("parseStatement()\n"); | |
4895 | ||
4896 | if (flags & PScurly && token.value != TOKlcurly) | |
4897 | error("statement expected to be { }, not %s", token.toChars()); | |
4898 | ||
4899 | switch (token.value) | |
4900 | { | |
4901 | case TOKidentifier: | |
4902 | { /* A leading identifier can be a declaration, label, or expression. | |
4903 | * The easiest case to check first is label: | |
4904 | */ | |
4905 | Token *t = peek(&token); | |
4906 | if (t->value == TOKcolon) | |
4907 | { | |
4908 | Token *nt = peek(t); | |
4909 | if (nt->value == TOKcolon) | |
4910 | { | |
4911 | // skip ident:: | |
4912 | nextToken(); | |
4913 | nextToken(); | |
4914 | nextToken(); | |
4915 | error("use `.` for member lookup, not `::`"); | |
4916 | break; | |
4917 | } | |
4918 | // It's a label | |
4919 | Identifier *ident = token.ident; | |
4920 | nextToken(); | |
4921 | nextToken(); | |
4922 | if (token.value == TOKrcurly) | |
4923 | s = NULL; | |
4924 | else if (token.value == TOKlcurly) | |
4925 | s = parseStatement(PScurly | PSscope); | |
4926 | else | |
4927 | s = parseStatement(PSsemi_ok); | |
4928 | s = new LabelStatement(loc, ident, s); | |
4929 | break; | |
4930 | } | |
4931 | } | |
4932 | /* fall through */ | |
4933 | case TOKdot: | |
4934 | case TOKtypeof: | |
4935 | case TOKvector: | |
5b74dd0a | 4936 | case TOKtraits: |
b4c522fa IB |
4937 | /* Bugzilla 15163: If tokens can be handled as |
4938 | * old C-style declaration or D expression, prefer the latter. | |
4939 | */ | |
4940 | if (isDeclaration(&token, 3, TOKreserved, NULL)) | |
4941 | goto Ldeclaration; | |
4942 | else | |
4943 | goto Lexp; | |
4944 | break; | |
4945 | ||
4946 | case TOKassert: | |
4947 | case TOKthis: | |
4948 | case TOKsuper: | |
4949 | case TOKint32v: | |
4950 | case TOKuns32v: | |
4951 | case TOKint64v: | |
4952 | case TOKuns64v: | |
4953 | case TOKint128v: | |
4954 | case TOKuns128v: | |
4955 | case TOKfloat32v: | |
4956 | case TOKfloat64v: | |
4957 | case TOKfloat80v: | |
4958 | case TOKimaginary32v: | |
4959 | case TOKimaginary64v: | |
4960 | case TOKimaginary80v: | |
4961 | case TOKcharv: | |
4962 | case TOKwcharv: | |
4963 | case TOKdcharv: | |
4964 | case TOKnull: | |
4965 | case TOKtrue: | |
4966 | case TOKfalse: | |
4967 | case TOKstring: | |
4968 | case TOKxstring: | |
4969 | case TOKlparen: | |
4970 | case TOKcast: | |
4971 | case TOKmul: | |
4972 | case TOKmin: | |
4973 | case TOKadd: | |
4974 | case TOKtilde: | |
4975 | case TOKnot: | |
4976 | case TOKplusplus: | |
4977 | case TOKminusminus: | |
4978 | case TOKnew: | |
4979 | case TOKdelete: | |
4980 | case TOKdelegate: | |
4981 | case TOKfunction: | |
4982 | case TOKtypeid: | |
4983 | case TOKis: | |
4984 | case TOKlbracket: | |
b4c522fa IB |
4985 | case TOKfile: |
4986 | case TOKfilefullpath: | |
4987 | case TOKline: | |
4988 | case TOKmodulestring: | |
4989 | case TOKfuncstring: | |
4990 | case TOKprettyfunc: | |
4991 | Lexp: | |
4992 | { | |
4993 | Expression *exp = parseExpression(); | |
4994 | check(TOKsemicolon, "statement"); | |
4995 | s = new ExpStatement(loc, exp); | |
4996 | break; | |
4997 | } | |
4998 | ||
4999 | case TOKstatic: | |
5000 | { // Look ahead to see if it's static assert() or static if() | |
5001 | ||
5002 | Token *t = peek(&token); | |
5003 | if (t->value == TOKassert) | |
5004 | { | |
5005 | s = new StaticAssertStatement(parseStaticAssert()); | |
5006 | break; | |
5007 | } | |
5008 | if (t->value == TOKif) | |
5009 | { | |
5010 | cond = parseStaticIfCondition(); | |
5011 | goto Lcondition; | |
5012 | } | |
5b74dd0a IB |
5013 | else if (t->value == TOKforeach || t->value == TOKforeach_reverse) |
5014 | { | |
5015 | s = parseForeachStatic(loc); | |
5016 | if (flags & PSscope) | |
5017 | s = new ScopeStatement(loc, s, token.loc); | |
5018 | break; | |
5019 | } | |
b4c522fa IB |
5020 | if (t->value == TOKimport) |
5021 | { | |
5022 | Dsymbols *imports = parseImport(); | |
5023 | s = new ImportStatement(loc, imports); | |
5024 | if (flags & PSscope) | |
5025 | s = new ScopeStatement(loc, s, token.loc); | |
5026 | break; | |
5027 | } | |
5028 | goto Ldeclaration; | |
5029 | } | |
5030 | ||
5031 | case TOKfinal: | |
5032 | if (peekNext() == TOKswitch) | |
5033 | { | |
5034 | nextToken(); | |
5035 | isfinal = true; | |
5036 | goto Lswitch; | |
5037 | } | |
5038 | goto Ldeclaration; | |
5039 | ||
5040 | case TOKwchar: case TOKdchar: | |
5041 | case TOKbool: case TOKchar: | |
5042 | case TOKint8: case TOKuns8: | |
5043 | case TOKint16: case TOKuns16: | |
5044 | case TOKint32: case TOKuns32: | |
5045 | case TOKint64: case TOKuns64: | |
5046 | case TOKint128: case TOKuns128: | |
5047 | case TOKfloat32: case TOKfloat64: case TOKfloat80: | |
5048 | case TOKimaginary32: case TOKimaginary64: case TOKimaginary80: | |
5049 | case TOKcomplex32: case TOKcomplex64: case TOKcomplex80: | |
5050 | case TOKvoid: | |
5051 | // bug 7773: int.max is always a part of expression | |
5052 | if (peekNext() == TOKdot) | |
5053 | goto Lexp; | |
5054 | if (peekNext() == TOKlparen) | |
5055 | goto Lexp; | |
5056 | /* fall through */ | |
5057 | ||
5058 | case TOKalias: | |
5059 | case TOKconst: | |
5060 | case TOKauto: | |
5061 | case TOKabstract: | |
5062 | case TOKextern: | |
5063 | case TOKalign: | |
5064 | case TOKimmutable: | |
5065 | case TOKshared: | |
5066 | case TOKwild: | |
5067 | case TOKdeprecated: | |
5068 | case TOKnothrow: | |
5069 | case TOKpure: | |
5070 | case TOKref: | |
5071 | case TOKgshared: | |
5072 | case TOKat: | |
5073 | case TOKstruct: | |
5074 | case TOKunion: | |
5075 | case TOKclass: | |
5076 | case TOKinterface: | |
5077 | Ldeclaration: | |
5078 | { | |
5079 | Dsymbols *a = parseDeclarations(false, NULL, NULL); | |
2cbc99d1 | 5080 | if (a->length > 1) |
b4c522fa IB |
5081 | { |
5082 | Statements *as = new Statements(); | |
2cbc99d1 IB |
5083 | as->reserve(a->length); |
5084 | for (size_t i = 0; i < a->length; i++) | |
b4c522fa IB |
5085 | { |
5086 | Dsymbol *d = (*a)[i]; | |
5087 | s = new ExpStatement(loc, d); | |
5088 | as->push(s); | |
5089 | } | |
5090 | s = new CompoundDeclarationStatement(loc, as); | |
5091 | } | |
2cbc99d1 | 5092 | else if (a->length == 1) |
b4c522fa IB |
5093 | { |
5094 | Dsymbol *d = (*a)[0]; | |
5095 | s = new ExpStatement(loc, d); | |
5096 | } | |
5097 | else | |
5098 | s = new ExpStatement(loc, (Expression *)NULL); | |
5099 | if (flags & PSscope) | |
5100 | s = new ScopeStatement(loc, s, token.loc); | |
5101 | break; | |
5102 | } | |
5103 | ||
5104 | case TOKenum: | |
5105 | { /* Determine if this is a manifest constant declaration, | |
5106 | * or a conventional enum. | |
5107 | */ | |
5108 | Dsymbol *d; | |
5109 | Token *t = peek(&token); | |
5110 | if (t->value == TOKlcurly || t->value == TOKcolon) | |
5111 | d = parseEnum(); | |
5112 | else if (t->value != TOKidentifier) | |
5113 | goto Ldeclaration; | |
5114 | else | |
5115 | { | |
5116 | t = peek(t); | |
5117 | if (t->value == TOKlcurly || t->value == TOKcolon || | |
5118 | t->value == TOKsemicolon) | |
5119 | d = parseEnum(); | |
5120 | else | |
5121 | goto Ldeclaration; | |
5122 | } | |
5123 | s = new ExpStatement(loc, d); | |
5124 | if (flags & PSscope) | |
5125 | s = new ScopeStatement(loc, s, token.loc); | |
5126 | break; | |
5127 | } | |
5128 | ||
5129 | case TOKmixin: | |
5130 | { Token *t = peek(&token); | |
5131 | if (t->value == TOKlparen) | |
5132 | { // mixin(string) | |
5133 | Expression *e = parseAssignExp(); | |
5134 | check(TOKsemicolon); | |
5135 | if (e->op == TOKmixin) | |
5136 | { | |
5137 | CompileExp *cpe = (CompileExp *)e; | |
5138 | s = new CompileStatement(loc, cpe->e1); | |
5139 | } | |
5140 | else | |
5141 | { | |
5142 | s = new ExpStatement(loc, e); | |
5143 | } | |
5144 | break; | |
5145 | } | |
5146 | Dsymbol *d = parseMixin(); | |
5147 | s = new ExpStatement(loc, d); | |
5148 | if (flags & PSscope) | |
5149 | s = new ScopeStatement(loc, s, token.loc); | |
5150 | break; | |
5151 | } | |
5152 | ||
5153 | case TOKlcurly: | |
5154 | { | |
5155 | Loc lookingForElseSave = lookingForElse; | |
5156 | lookingForElse = Loc(); | |
5157 | ||
5158 | nextToken(); | |
5159 | //if (token.value == TOKsemicolon) | |
5160 | //error("use '{ }' for an empty statement, not a ';'"); | |
5161 | Statements *statements = new Statements(); | |
5162 | while (token.value != TOKrcurly && token.value != TOKeof) | |
5163 | { | |
5164 | statements->push(parseStatement(PSsemi | PScurlyscope)); | |
5165 | } | |
5166 | if (endPtr) *endPtr = token.ptr; | |
5167 | endloc = token.loc; | |
5168 | if (pEndloc) | |
5169 | { | |
5170 | *pEndloc = token.loc; | |
5171 | pEndloc = NULL; // don't set it again | |
5172 | } | |
5173 | s = new CompoundStatement(loc, statements); | |
5174 | if (flags & (PSscope | PScurlyscope)) | |
5175 | s = new ScopeStatement(loc, s, token.loc); | |
5176 | check(TOKrcurly, "compound statement"); | |
5177 | lookingForElse = lookingForElseSave; | |
5178 | break; | |
5179 | } | |
5180 | ||
5181 | case TOKwhile: | |
5182 | { | |
5183 | nextToken(); | |
5184 | check(TOKlparen); | |
5185 | Expression *condition = parseExpression(); | |
5186 | check(TOKrparen); | |
5187 | Loc endloc; | |
5188 | Statement *body = parseStatement(PSscope, NULL, &endloc); | |
5189 | s = new WhileStatement(loc, condition, body, endloc); | |
5190 | break; | |
5191 | } | |
5192 | ||
5193 | case TOKsemicolon: | |
5194 | if (!(flags & PSsemi_ok)) | |
5195 | { | |
5196 | if (flags & PSsemi) | |
5197 | deprecation("use '{ }' for an empty statement, not a ';'"); | |
5198 | else | |
5199 | error("use '{ }' for an empty statement, not a ';'"); | |
5200 | } | |
5201 | nextToken(); | |
5202 | s = new ExpStatement(loc, (Expression *)NULL); | |
5203 | break; | |
5204 | ||
5205 | case TOKdo: | |
5206 | { Statement *body; | |
5207 | Expression *condition; | |
5208 | ||
5209 | nextToken(); | |
5210 | Loc lookingForElseSave = lookingForElse; | |
5211 | lookingForElse = Loc(); | |
5212 | body = parseStatement(PSscope); | |
5213 | lookingForElse = lookingForElseSave; | |
5214 | check(TOKwhile); | |
5215 | check(TOKlparen); | |
5216 | condition = parseExpression(); | |
5217 | check(TOKrparen); | |
5218 | if (token.value == TOKsemicolon) | |
5219 | nextToken(); | |
5220 | else | |
5221 | error("terminating ';' required after do-while statement"); | |
5222 | s = new DoStatement(loc, body, condition, token.loc); | |
5223 | break; | |
5224 | } | |
5225 | ||
5226 | case TOKfor: | |
5227 | { | |
5228 | Statement *init; | |
5229 | Expression *condition; | |
5230 | Expression *increment; | |
5231 | ||
5232 | nextToken(); | |
5233 | check(TOKlparen); | |
5234 | if (token.value == TOKsemicolon) | |
5235 | { init = NULL; | |
5236 | nextToken(); | |
5237 | } | |
5238 | else | |
5239 | { | |
5240 | Loc lookingForElseSave = lookingForElse; | |
5241 | lookingForElse = Loc(); | |
5242 | init = parseStatement(0); | |
5243 | lookingForElse = lookingForElseSave; | |
5244 | } | |
5245 | if (token.value == TOKsemicolon) | |
5246 | { | |
5247 | condition = NULL; | |
5248 | nextToken(); | |
5249 | } | |
5250 | else | |
5251 | { | |
5252 | condition = parseExpression(); | |
5253 | check(TOKsemicolon, "for condition"); | |
5254 | } | |
5255 | if (token.value == TOKrparen) | |
5256 | { increment = NULL; | |
5257 | nextToken(); | |
5258 | } | |
5259 | else | |
5260 | { increment = parseExpression(); | |
5261 | check(TOKrparen); | |
5262 | } | |
5263 | Loc endloc; | |
5264 | Statement *body = parseStatement(PSscope, NULL, &endloc); | |
5265 | s = new ForStatement(loc, init, condition, increment, body, endloc); | |
5266 | break; | |
5267 | } | |
5268 | ||
5269 | case TOKforeach: | |
5270 | case TOKforeach_reverse: | |
5271 | { | |
5b74dd0a | 5272 | s = parseForeach(loc, NULL, false); |
b4c522fa IB |
5273 | break; |
5274 | } | |
5275 | ||
5276 | case TOKif: | |
5277 | { | |
5278 | Parameter *param = NULL; | |
5279 | Expression *condition; | |
5280 | ||
5281 | nextToken(); | |
5282 | check(TOKlparen); | |
5283 | ||
5284 | StorageClass storageClass = 0; | |
5285 | StorageClass stc = 0; | |
5286 | LagainStc: | |
5287 | if (stc) | |
5288 | { | |
5289 | storageClass = appendStorageClass(storageClass, stc); | |
5290 | nextToken(); | |
5291 | } | |
5292 | switch (token.value) | |
5293 | { | |
5294 | case TOKref: | |
5295 | stc = STCref; | |
5296 | goto LagainStc; | |
5297 | case TOKauto: | |
5298 | stc = STCauto; | |
5299 | goto LagainStc; | |
5300 | case TOKconst: | |
5301 | if (peekNext() != TOKlparen) | |
5302 | { | |
5303 | stc = STCconst; | |
5304 | goto LagainStc; | |
5305 | } | |
5306 | break; | |
5307 | case TOKimmutable: | |
5308 | if (peekNext() != TOKlparen) | |
5309 | { | |
5310 | stc = STCimmutable; | |
5311 | goto LagainStc; | |
5312 | } | |
5313 | break; | |
5314 | case TOKshared: | |
5315 | if (peekNext() != TOKlparen) | |
5316 | { | |
5317 | stc = STCshared; | |
5318 | goto LagainStc; | |
5319 | } | |
5320 | break; | |
5321 | case TOKwild: | |
5322 | if (peekNext() != TOKlparen) | |
5323 | { | |
5324 | stc = STCwild; | |
5325 | goto LagainStc; | |
5326 | } | |
5327 | break; | |
5328 | default: | |
5329 | break; | |
5330 | } | |
5331 | ||
5332 | if (storageClass != 0 && | |
5333 | token.value == TOKidentifier && | |
5334 | peek(&token)->value == TOKassign) | |
5335 | { | |
5336 | Identifier *ai = token.ident; | |
5337 | Type *at = NULL; // infer parameter type | |
5338 | nextToken(); | |
5339 | check(TOKassign); | |
5340 | param = new Parameter(storageClass, at, ai, NULL); | |
5341 | } | |
5342 | else if (isDeclaration(&token, 2, TOKassign, NULL)) | |
5343 | { | |
5344 | Identifier *ai; | |
5345 | Type *at = parseType(&ai); | |
5346 | check(TOKassign); | |
5347 | param = new Parameter(storageClass, at, ai, NULL); | |
5348 | } | |
5349 | ||
5350 | condition = parseExpression(); | |
5351 | check(TOKrparen); | |
5352 | { | |
5353 | Loc lookingForElseSave = lookingForElse; | |
5354 | lookingForElse = loc; | |
5355 | ifbody = parseStatement(PSscope); | |
5356 | lookingForElse = lookingForElseSave; | |
5357 | } | |
5358 | if (token.value == TOKelse) | |
5359 | { | |
5360 | Loc elseloc = token.loc; | |
5361 | nextToken(); | |
5362 | elsebody = parseStatement(PSscope); | |
5363 | checkDanglingElse(elseloc); | |
5364 | } | |
5365 | else | |
5366 | elsebody = NULL; | |
5367 | if (condition && ifbody) | |
5368 | s = new IfStatement(loc, param, condition, ifbody, elsebody, token.loc); | |
5369 | else | |
5370 | s = NULL; // don't propagate parsing errors | |
5371 | break; | |
5372 | } | |
5373 | ||
5374 | case TOKscope: | |
5375 | if (peek(&token)->value != TOKlparen) | |
5376 | goto Ldeclaration; // scope used as storage class | |
5377 | nextToken(); | |
5378 | check(TOKlparen); | |
5379 | if (token.value != TOKidentifier) | |
5380 | { error("scope identifier expected"); | |
5381 | goto Lerror; | |
5382 | } | |
5383 | else | |
5384 | { TOK t = TOKon_scope_exit; | |
5385 | Identifier *id = token.ident; | |
5386 | ||
5387 | if (id == Id::exit) | |
5388 | t = TOKon_scope_exit; | |
5389 | else if (id == Id::failure) | |
5390 | t = TOKon_scope_failure; | |
5391 | else if (id == Id::success) | |
5392 | t = TOKon_scope_success; | |
5393 | else | |
5394 | error("valid scope identifiers are exit, failure, or success, not %s", id->toChars()); | |
5395 | nextToken(); | |
5396 | check(TOKrparen); | |
5397 | Statement *st = parseStatement(PSscope); | |
72acf751 | 5398 | s = new ScopeGuardStatement(loc, t, st); |
b4c522fa IB |
5399 | break; |
5400 | } | |
5401 | ||
5402 | case TOKdebug: | |
5403 | nextToken(); | |
5404 | if (token.value == TOKassign) | |
5405 | { | |
5406 | error("debug conditions can only be declared at module scope"); | |
5407 | nextToken(); | |
5408 | nextToken(); | |
5409 | goto Lerror; | |
5410 | } | |
5411 | cond = parseDebugCondition(); | |
5412 | goto Lcondition; | |
5413 | ||
5414 | case TOKversion: | |
5415 | nextToken(); | |
5416 | if (token.value == TOKassign) | |
5417 | { | |
5418 | error("version conditions can only be declared at module scope"); | |
5419 | nextToken(); | |
5420 | nextToken(); | |
5421 | goto Lerror; | |
5422 | } | |
5423 | cond = parseVersionCondition(); | |
5424 | goto Lcondition; | |
5425 | ||
5426 | Lcondition: | |
5427 | { | |
5428 | Loc lookingForElseSave = lookingForElse; | |
5429 | lookingForElse = loc; | |
5430 | ifbody = parseStatement(0); | |
5431 | lookingForElse = lookingForElseSave; | |
5432 | } | |
5433 | elsebody = NULL; | |
5434 | if (token.value == TOKelse) | |
5435 | { | |
5436 | Loc elseloc = token.loc; | |
5437 | nextToken(); | |
5438 | elsebody = parseStatement(0); | |
5439 | checkDanglingElse(elseloc); | |
5440 | } | |
5441 | s = new ConditionalStatement(loc, cond, ifbody, elsebody); | |
5442 | if (flags & PSscope) | |
5443 | s = new ScopeStatement(loc, s, token.loc); | |
5444 | break; | |
5445 | ||
5446 | case TOKpragma: | |
5447 | { Identifier *ident; | |
5448 | Expressions *args = NULL; | |
5449 | Statement *body; | |
5450 | ||
5451 | nextToken(); | |
5452 | check(TOKlparen); | |
5453 | if (token.value != TOKidentifier) | |
5454 | { error("pragma(identifier expected"); | |
5455 | goto Lerror; | |
5456 | } | |
5457 | ident = token.ident; | |
5458 | nextToken(); | |
5459 | if (token.value == TOKcomma && peekNext() != TOKrparen) | |
5460 | args = parseArguments(); // pragma(identifier, args...); | |
5461 | else | |
5462 | check(TOKrparen); // pragma(identifier); | |
5463 | if (token.value == TOKsemicolon) | |
5464 | { nextToken(); | |
5465 | body = NULL; | |
5466 | } | |
5467 | else | |
5468 | body = parseStatement(PSsemi); | |
5469 | s = new PragmaStatement(loc, ident, args, body); | |
5470 | break; | |
5471 | } | |
5472 | ||
5473 | case TOKswitch: | |
5474 | isfinal = false; | |
5475 | goto Lswitch; | |
5476 | ||
5477 | Lswitch: | |
5478 | { | |
5479 | nextToken(); | |
5480 | check(TOKlparen); | |
5481 | Expression *condition = parseExpression(); | |
5482 | check(TOKrparen); | |
5483 | Statement *body = parseStatement(PSscope); | |
5484 | s = new SwitchStatement(loc, condition, body, isfinal); | |
5485 | break; | |
5486 | } | |
5487 | ||
5488 | case TOKcase: | |
5489 | { Expression *exp; | |
5490 | Expressions cases; // array of Expression's | |
5491 | Expression *last = NULL; | |
5492 | ||
5493 | while (1) | |
5494 | { | |
5495 | nextToken(); | |
5496 | exp = parseAssignExp(); | |
5497 | cases.push(exp); | |
5498 | if (token.value != TOKcomma) | |
5499 | break; | |
5500 | } | |
5501 | check(TOKcolon); | |
5502 | ||
5503 | /* case exp: .. case last: | |
5504 | */ | |
5505 | if (token.value == TOKslice) | |
5506 | { | |
2cbc99d1 | 5507 | if (cases.length > 1) |
b4c522fa IB |
5508 | error("only one case allowed for start of case range"); |
5509 | nextToken(); | |
5510 | check(TOKcase); | |
5511 | last = parseAssignExp(); | |
5512 | check(TOKcolon); | |
5513 | } | |
5514 | ||
5515 | if (flags & PScurlyscope) | |
5516 | { | |
5517 | Statements *statements = new Statements(); | |
5518 | while (token.value != TOKcase && | |
5519 | token.value != TOKdefault && | |
5520 | token.value != TOKeof && | |
5521 | token.value != TOKrcurly) | |
5522 | { | |
5523 | statements->push(parseStatement(PSsemi | PScurlyscope)); | |
5524 | } | |
5525 | s = new CompoundStatement(loc, statements); | |
5526 | } | |
5527 | else | |
5528 | s = parseStatement(PSsemi | PScurlyscope); | |
5529 | s = new ScopeStatement(loc, s, token.loc); | |
5530 | ||
5531 | if (last) | |
5532 | { | |
5533 | s = new CaseRangeStatement(loc, exp, last, s); | |
5534 | } | |
5535 | else | |
5536 | { | |
5537 | // Keep cases in order by building the case statements backwards | |
2cbc99d1 | 5538 | for (size_t i = cases.length; i; i--) |
b4c522fa IB |
5539 | { |
5540 | exp = cases[i - 1]; | |
5541 | s = new CaseStatement(loc, exp, s); | |
5542 | } | |
5543 | } | |
5544 | break; | |
5545 | } | |
5546 | ||
5547 | case TOKdefault: | |
5548 | { | |
5549 | nextToken(); | |
5550 | check(TOKcolon); | |
5551 | ||
5552 | if (flags & PScurlyscope) | |
5553 | { | |
5554 | Statements *statements = new Statements(); | |
5555 | while (token.value != TOKcase && | |
5556 | token.value != TOKdefault && | |
5557 | token.value != TOKeof && | |
5558 | token.value != TOKrcurly) | |
5559 | { | |
5560 | statements->push(parseStatement(PSsemi | PScurlyscope)); | |
5561 | } | |
5562 | s = new CompoundStatement(loc, statements); | |
5563 | } | |
5564 | else | |
5565 | s = parseStatement(PSsemi | PScurlyscope); | |
5566 | s = new ScopeStatement(loc, s, token.loc); | |
5567 | s = new DefaultStatement(loc, s); | |
5568 | break; | |
5569 | } | |
5570 | ||
5571 | case TOKreturn: | |
5572 | { Expression *exp; | |
5573 | ||
5574 | nextToken(); | |
5575 | if (token.value == TOKsemicolon) | |
5576 | exp = NULL; | |
5577 | else | |
5578 | exp = parseExpression(); | |
5579 | check(TOKsemicolon, "return statement"); | |
5580 | s = new ReturnStatement(loc, exp); | |
5581 | break; | |
5582 | } | |
5583 | ||
5584 | case TOKbreak: | |
5585 | { Identifier *ident; | |
5586 | ||
5587 | nextToken(); | |
5588 | if (token.value == TOKidentifier) | |
5589 | { ident = token.ident; | |
5590 | nextToken(); | |
5591 | } | |
5592 | else | |
5593 | ident = NULL; | |
5594 | check(TOKsemicolon, "break statement"); | |
5595 | s = new BreakStatement(loc, ident); | |
5596 | break; | |
5597 | } | |
5598 | ||
5599 | case TOKcontinue: | |
5600 | { Identifier *ident; | |
5601 | ||
5602 | nextToken(); | |
5603 | if (token.value == TOKidentifier) | |
5604 | { ident = token.ident; | |
5605 | nextToken(); | |
5606 | } | |
5607 | else | |
5608 | ident = NULL; | |
5609 | check(TOKsemicolon, "continue statement"); | |
5610 | s = new ContinueStatement(loc, ident); | |
5611 | break; | |
5612 | } | |
5613 | ||
5614 | case TOKgoto: | |
5615 | { Identifier *ident; | |
5616 | ||
5617 | nextToken(); | |
5618 | if (token.value == TOKdefault) | |
5619 | { | |
5620 | nextToken(); | |
5621 | s = new GotoDefaultStatement(loc); | |
5622 | } | |
5623 | else if (token.value == TOKcase) | |
5624 | { | |
5625 | Expression *exp = NULL; | |
5626 | ||
5627 | nextToken(); | |
5628 | if (token.value != TOKsemicolon) | |
5629 | exp = parseExpression(); | |
5630 | s = new GotoCaseStatement(loc, exp); | |
5631 | } | |
5632 | else | |
5633 | { | |
5634 | if (token.value != TOKidentifier) | |
5635 | { | |
5636 | error("identifier expected following goto"); | |
5637 | ident = NULL; | |
5638 | } | |
5639 | else | |
5640 | { | |
5641 | ident = token.ident; | |
5642 | nextToken(); | |
5643 | } | |
5644 | s = new GotoStatement(loc, ident); | |
5645 | } | |
5646 | check(TOKsemicolon, "goto statement"); | |
5647 | break; | |
5648 | } | |
5649 | ||
5650 | case TOKsynchronized: | |
5651 | { Expression *exp; | |
5652 | Statement *body; | |
5653 | ||
5654 | Token *t = peek(&token); | |
5655 | if (skipAttributes(t, &t) && t->value == TOKclass) | |
5656 | goto Ldeclaration; | |
5657 | ||
5658 | nextToken(); | |
5659 | if (token.value == TOKlparen) | |
5660 | { | |
5661 | nextToken(); | |
5662 | exp = parseExpression(); | |
5663 | check(TOKrparen); | |
5664 | } | |
5665 | else | |
5666 | exp = NULL; | |
5667 | body = parseStatement(PSscope); | |
5668 | s = new SynchronizedStatement(loc, exp, body); | |
5669 | break; | |
5670 | } | |
5671 | ||
5672 | case TOKwith: | |
5673 | { Expression *exp; | |
5674 | Statement *body; | |
5675 | ||
5676 | nextToken(); | |
5677 | check(TOKlparen); | |
5678 | exp = parseExpression(); | |
5679 | check(TOKrparen); | |
5680 | body = parseStatement(PSscope); | |
5681 | s = new WithStatement(loc, exp, body, token.loc); | |
5682 | break; | |
5683 | } | |
5684 | ||
5685 | case TOKtry: | |
5686 | { Statement *body; | |
5687 | Catches *catches = NULL; | |
5688 | Statement *finalbody = NULL; | |
5689 | ||
5690 | nextToken(); | |
5691 | Loc lookingForElseSave = lookingForElse; | |
5692 | lookingForElse = Loc(); | |
5693 | body = parseStatement(PSscope); | |
5694 | lookingForElse = lookingForElseSave; | |
5695 | while (token.value == TOKcatch) | |
5696 | { | |
5697 | Statement *handler; | |
5698 | Catch *c; | |
5699 | Type *t; | |
5700 | Identifier *id; | |
5701 | Loc catchloc = token.loc; | |
5702 | ||
5703 | nextToken(); | |
5704 | if (token.value == TOKlcurly || token.value != TOKlparen) | |
5705 | { | |
5706 | t = NULL; | |
5707 | id = NULL; | |
5708 | } | |
5709 | else | |
5710 | { | |
5711 | check(TOKlparen); | |
5712 | id = NULL; | |
5713 | t = parseType(&id); | |
5714 | check(TOKrparen); | |
5715 | } | |
5716 | handler = parseStatement(0); | |
5717 | c = new Catch(catchloc, t, id, handler); | |
5718 | if (!catches) | |
5719 | catches = new Catches(); | |
5720 | catches->push(c); | |
5721 | } | |
5722 | ||
5723 | if (token.value == TOKfinally) | |
5724 | { | |
5725 | nextToken(); | |
5726 | finalbody = parseStatement(PSscope); | |
5727 | } | |
5728 | ||
5729 | s = body; | |
5730 | if (!catches && !finalbody) | |
5731 | error("catch or finally expected following try"); | |
5732 | else | |
5733 | { if (catches) | |
5734 | s = new TryCatchStatement(loc, body, catches); | |
5735 | if (finalbody) | |
5736 | s = new TryFinallyStatement(loc, s, finalbody); | |
5737 | } | |
5738 | break; | |
5739 | } | |
5740 | ||
5741 | case TOKthrow: | |
5742 | { Expression *exp; | |
5743 | ||
5744 | nextToken(); | |
5745 | exp = parseExpression(); | |
5746 | check(TOKsemicolon, "throw statement"); | |
5747 | s = new ThrowStatement(loc, exp); | |
5748 | break; | |
5749 | } | |
5750 | ||
5751 | case TOKasm: | |
5752 | { | |
5753 | // Parse the asm block into a sequence of AsmStatements, | |
5754 | // each AsmStatement is one instruction. | |
5755 | // Separate out labels. | |
5756 | // Defer parsing of AsmStatements until semantic processing. | |
5757 | ||
5758 | Loc labelloc; | |
5759 | ||
5760 | nextToken(); | |
5761 | StorageClass stc = parsePostfix(STCundefined, NULL); | |
5762 | if (stc & (STCconst | STCimmutable | STCshared | STCwild)) | |
5763 | error("const/immutable/shared/inout attributes are not allowed on asm blocks"); | |
5764 | ||
5765 | check(TOKlcurly); | |
5766 | Token *toklist = NULL; | |
5767 | Token **ptoklist = &toklist; | |
5768 | Identifier *label = NULL; | |
5769 | Statements *statements = new Statements(); | |
5770 | size_t nestlevel = 0; | |
5771 | while (1) | |
5772 | { | |
5773 | switch (token.value) | |
5774 | { | |
5775 | case TOKidentifier: | |
5776 | if (!toklist) | |
5777 | { | |
5778 | // Look ahead to see if it is a label | |
5779 | Token *t = peek(&token); | |
5780 | if (t->value == TOKcolon) | |
5781 | { // It's a label | |
5782 | label = token.ident; | |
5783 | labelloc = token.loc; | |
5784 | nextToken(); | |
5785 | nextToken(); | |
5786 | continue; | |
5787 | } | |
5788 | } | |
5789 | goto Ldefault; | |
5790 | ||
5791 | case TOKlcurly: | |
5792 | ++nestlevel; | |
5793 | goto Ldefault; | |
5794 | ||
5795 | case TOKrcurly: | |
5796 | if (nestlevel > 0) | |
5797 | { | |
5798 | --nestlevel; | |
5799 | goto Ldefault; | |
5800 | } | |
5801 | ||
5802 | if (toklist || label) | |
5803 | { | |
5804 | error("asm statements must end in ';'"); | |
5805 | } | |
5806 | break; | |
5807 | ||
5808 | case TOKsemicolon: | |
5809 | if (nestlevel != 0) | |
5810 | error("mismatched number of curly brackets"); | |
5811 | ||
5812 | s = NULL; | |
5813 | if (toklist || label) | |
5814 | { | |
5815 | // Create AsmStatement from list of tokens we've saved | |
5816 | s = new AsmStatement(token.loc, toklist); | |
5817 | toklist = NULL; | |
5818 | ptoklist = &toklist; | |
5819 | if (label) | |
5820 | { s = new LabelStatement(labelloc, label, s); | |
5821 | label = NULL; | |
5822 | } | |
5823 | statements->push(s); | |
5824 | } | |
5825 | nextToken(); | |
5826 | continue; | |
5827 | ||
5828 | case TOKeof: | |
5829 | /* { */ | |
5830 | error("matching '}' expected, not end of file"); | |
5831 | goto Lerror; | |
5832 | /* fall through */ | |
5833 | ||
5834 | default: | |
5835 | Ldefault: | |
5836 | *ptoklist = Token::alloc(); | |
5837 | memcpy(*ptoklist, &token, sizeof(Token)); | |
5838 | ptoklist = &(*ptoklist)->next; | |
5839 | *ptoklist = NULL; | |
5840 | ||
5841 | nextToken(); | |
5842 | continue; | |
5843 | } | |
5844 | break; | |
5845 | } | |
5846 | s = new CompoundAsmStatement(loc, statements, stc); | |
5847 | nextToken(); | |
5848 | break; | |
5849 | } | |
5850 | ||
5851 | case TOKimport: | |
5852 | { | |
5853 | Dsymbols *imports = parseImport(); | |
5854 | s = new ImportStatement(loc, imports); | |
5855 | if (flags & PSscope) | |
5856 | s = new ScopeStatement(loc, s, token.loc); | |
5857 | break; | |
5858 | } | |
5859 | ||
5860 | case TOKtemplate: | |
5861 | { | |
5862 | Dsymbol *d = parseTemplateDeclaration(); | |
5863 | s = new ExpStatement(loc, d); | |
5864 | break; | |
5865 | } | |
5866 | ||
5867 | default: | |
5868 | error("found '%s' instead of statement", token.toChars()); | |
5869 | goto Lerror; | |
5870 | ||
5871 | Lerror: | |
5872 | while (token.value != TOKrcurly && | |
5873 | token.value != TOKsemicolon && | |
5874 | token.value != TOKeof) | |
5875 | nextToken(); | |
5876 | if (token.value == TOKsemicolon) | |
5877 | nextToken(); | |
5878 | s = NULL; | |
5879 | break; | |
5880 | } | |
5881 | if (pEndloc) | |
5882 | *pEndloc = token.loc; | |
5883 | return s; | |
5884 | } | |
5885 | ||
5886 | void Parser::check(TOK value) | |
5887 | { | |
5888 | check(token.loc, value); | |
5889 | } | |
5890 | ||
5891 | void Parser::check(Loc loc, TOK value) | |
5892 | { | |
5893 | if (token.value != value) | |
5894 | error(loc, "found '%s' when expecting '%s'", token.toChars(), Token::toChars(value)); | |
5895 | nextToken(); | |
5896 | } | |
5897 | ||
5898 | void Parser::check(TOK value, const char *string) | |
5899 | { | |
5900 | if (token.value != value) | |
5901 | error("found '%s' when expecting '%s' following %s", | |
5902 | token.toChars(), Token::toChars(value), string); | |
5903 | nextToken(); | |
5904 | } | |
5905 | ||
5906 | void Parser::checkParens(TOK value, Expression *e) | |
5907 | { | |
5908 | if (precedence[e->op] == PREC_rel && !e->parens) | |
5909 | error(e->loc, "%s must be parenthesized when next to operator %s", e->toChars(), Token::toChars(value)); | |
5910 | } | |
5911 | ||
5912 | /************************************ | |
5913 | * Determine if the scanner is sitting on the start of a declaration. | |
5914 | * Input: | |
5915 | * needId 0 no identifier | |
5916 | * 1 identifier optional | |
5917 | * 2 must have identifier | |
5918 | * 3 must have identifier, but don't recognize old C-style syntax. | |
5919 | * Output: | |
5920 | * if *pt is not NULL, it is set to the ending token, which would be endtok | |
5921 | */ | |
5922 | ||
5923 | bool Parser::isDeclaration(Token *t, int needId, TOK endtok, Token **pt) | |
5924 | { | |
5925 | //printf("isDeclaration(needId = %d)\n", needId); | |
5926 | int haveId = 0; | |
5927 | int haveTpl = 0; | |
5928 | ||
5929 | while (1) | |
5930 | { | |
5931 | if ((t->value == TOKconst || | |
5932 | t->value == TOKimmutable || | |
5933 | t->value == TOKwild || | |
5934 | t->value == TOKshared) && | |
5935 | peek(t)->value != TOKlparen) | |
5936 | { | |
5937 | /* const type | |
5938 | * immutable type | |
5939 | * shared type | |
5940 | * wild type | |
5941 | */ | |
5942 | t = peek(t); | |
5943 | continue; | |
5944 | } | |
5945 | break; | |
5946 | } | |
5947 | ||
5948 | if (!isBasicType(&t)) | |
5949 | { | |
5950 | goto Lisnot; | |
5951 | } | |
5952 | if (!isDeclarator(&t, &haveId, &haveTpl, endtok, needId != 3)) | |
5953 | goto Lisnot; | |
5954 | if (needId == 1 || (needId == 0 && !haveId) || ((needId == 2 || needId == 3) && haveId)) | |
5955 | { | |
5956 | if (pt) | |
5957 | *pt = t; | |
5958 | goto Lis; | |
5959 | } | |
5960 | else | |
5961 | goto Lisnot; | |
5962 | ||
5963 | Lis: | |
5964 | //printf("\tis declaration, t = %s\n", t->toChars()); | |
5965 | return true; | |
5966 | ||
5967 | Lisnot: | |
5968 | //printf("\tis not declaration\n"); | |
5969 | return false; | |
5970 | } | |
5971 | ||
5972 | bool Parser::isBasicType(Token **pt) | |
5973 | { | |
5974 | // This code parallels parseBasicType() | |
5975 | Token *t = *pt; | |
5976 | ||
5977 | switch (t->value) | |
5978 | { | |
5979 | case TOKwchar: case TOKdchar: | |
5980 | case TOKbool: case TOKchar: | |
5981 | case TOKint8: case TOKuns8: | |
5982 | case TOKint16: case TOKuns16: | |
5983 | case TOKint32: case TOKuns32: | |
5984 | case TOKint64: case TOKuns64: | |
5985 | case TOKint128: case TOKuns128: | |
5986 | case TOKfloat32: case TOKfloat64: case TOKfloat80: | |
5987 | case TOKimaginary32: case TOKimaginary64: case TOKimaginary80: | |
5988 | case TOKcomplex32: case TOKcomplex64: case TOKcomplex80: | |
5989 | case TOKvoid: | |
5990 | t = peek(t); | |
5991 | break; | |
5992 | ||
5993 | case TOKidentifier: | |
5994 | L5: | |
5995 | t = peek(t); | |
5996 | if (t->value == TOKnot) | |
5997 | { | |
5998 | goto L4; | |
5999 | } | |
6000 | goto L3; | |
6001 | while (1) | |
6002 | { | |
6003 | L2: | |
6004 | t = peek(t); | |
6005 | L3: | |
6006 | if (t->value == TOKdot) | |
6007 | { | |
6008 | Ldot: | |
6009 | t = peek(t); | |
6010 | if (t->value != TOKidentifier) | |
6011 | goto Lfalse; | |
6012 | t = peek(t); | |
6013 | if (t->value != TOKnot) | |
6014 | goto L3; | |
6015 | L4: | |
6016 | /* Seen a ! | |
6017 | * Look for: | |
6018 | * !( args ), !identifier, etc. | |
6019 | */ | |
6020 | t = peek(t); | |
6021 | switch (t->value) | |
6022 | { | |
6023 | case TOKidentifier: | |
6024 | goto L5; | |
6025 | case TOKlparen: | |
6026 | if (!skipParens(t, &t)) | |
6027 | goto Lfalse; | |
6028 | goto L3; | |
6029 | case TOKwchar: case TOKdchar: | |
6030 | case TOKbool: case TOKchar: | |
6031 | case TOKint8: case TOKuns8: | |
6032 | case TOKint16: case TOKuns16: | |
6033 | case TOKint32: case TOKuns32: | |
6034 | case TOKint64: case TOKuns64: | |
6035 | case TOKint128: case TOKuns128: | |
6036 | case TOKfloat32: case TOKfloat64: case TOKfloat80: | |
6037 | case TOKimaginary32: case TOKimaginary64: case TOKimaginary80: | |
6038 | case TOKcomplex32: case TOKcomplex64: case TOKcomplex80: | |
6039 | case TOKvoid: | |
6040 | case TOKint32v: | |
6041 | case TOKuns32v: | |
6042 | case TOKint64v: | |
6043 | case TOKuns64v: | |
6044 | case TOKint128v: | |
6045 | case TOKuns128v: | |
6046 | case TOKfloat32v: | |
6047 | case TOKfloat64v: | |
6048 | case TOKfloat80v: | |
6049 | case TOKimaginary32v: | |
6050 | case TOKimaginary64v: | |
6051 | case TOKimaginary80v: | |
6052 | case TOKnull: | |
6053 | case TOKtrue: | |
6054 | case TOKfalse: | |
6055 | case TOKcharv: | |
6056 | case TOKwcharv: | |
6057 | case TOKdcharv: | |
6058 | case TOKstring: | |
6059 | case TOKxstring: | |
6060 | case TOKfile: | |
6061 | case TOKfilefullpath: | |
6062 | case TOKline: | |
6063 | case TOKmodulestring: | |
6064 | case TOKfuncstring: | |
6065 | case TOKprettyfunc: | |
6066 | goto L2; | |
6067 | default: | |
6068 | goto Lfalse; | |
6069 | } | |
6070 | } | |
6071 | else | |
6072 | break; | |
6073 | } | |
6074 | break; | |
6075 | ||
6076 | case TOKdot: | |
6077 | goto Ldot; | |
6078 | ||
6079 | case TOKtypeof: | |
6080 | case TOKvector: | |
6081 | /* typeof(exp).identifier... | |
6082 | */ | |
6083 | t = peek(t); | |
6084 | if (!skipParens(t, &t)) | |
6085 | goto Lfalse; | |
6086 | goto L3; | |
6087 | ||
5b74dd0a IB |
6088 | case TOKtraits: |
6089 | { | |
6090 | // __traits(getMember | |
6091 | t = peek(t); | |
6092 | if (t->value != TOKlparen) | |
6093 | goto Lfalse; | |
6094 | Token *lp = t; | |
6095 | t = peek(t); | |
6096 | if (t->value != TOKidentifier || t->ident != Id::getMember) | |
6097 | goto Lfalse; | |
6098 | if (!skipParens(lp, &lp)) | |
6099 | goto Lfalse; | |
6100 | // we are in a lookup for decl VS statement | |
6101 | // so we expect a declarator following __trait if it's a type. | |
6102 | // other usages wont be ambiguous (alias, template instance, type qual, etc.) | |
6103 | if (lp->value != TOKidentifier) | |
6104 | goto Lfalse; | |
6105 | ||
6106 | break; | |
6107 | } | |
6108 | ||
b4c522fa IB |
6109 | case TOKconst: |
6110 | case TOKimmutable: | |
6111 | case TOKshared: | |
6112 | case TOKwild: | |
6113 | // const(type) or immutable(type) or shared(type) or wild(type) | |
6114 | t = peek(t); | |
6115 | if (t->value != TOKlparen) | |
6116 | goto Lfalse; | |
6117 | t = peek(t); | |
6118 | if (!isDeclaration(t, 0, TOKrparen, &t)) | |
6119 | { | |
6120 | goto Lfalse; | |
6121 | } | |
6122 | t = peek(t); | |
6123 | break; | |
6124 | ||
6125 | default: | |
6126 | goto Lfalse; | |
6127 | } | |
6128 | *pt = t; | |
6129 | //printf("is\n"); | |
6130 | return true; | |
6131 | ||
6132 | Lfalse: | |
6133 | //printf("is not\n"); | |
6134 | return false; | |
6135 | } | |
6136 | ||
6137 | bool Parser::isDeclarator(Token **pt, int *haveId, int *haveTpl, TOK endtok, bool allowAltSyntax) | |
6138 | { // This code parallels parseDeclarator() | |
6139 | Token *t = *pt; | |
6140 | int parens; | |
6141 | ||
6142 | //printf("Parser::isDeclarator() %s\n", t->toChars()); | |
6143 | if (t->value == TOKassign) | |
6144 | return false; | |
6145 | ||
6146 | while (1) | |
6147 | { | |
6148 | parens = false; | |
6149 | switch (t->value) | |
6150 | { | |
6151 | case TOKmul: | |
6152 | //case TOKand: | |
6153 | t = peek(t); | |
6154 | continue; | |
6155 | ||
6156 | case TOKlbracket: | |
6157 | t = peek(t); | |
6158 | if (t->value == TOKrbracket) | |
6159 | { | |
6160 | t = peek(t); | |
6161 | } | |
6162 | else if (isDeclaration(t, 0, TOKrbracket, &t)) | |
6163 | { | |
6164 | // It's an associative array declaration | |
6165 | t = peek(t); | |
6166 | ||
6167 | // ...[type].ident | |
6168 | if (t->value == TOKdot && peek(t)->value == TOKidentifier) | |
6169 | { | |
6170 | t = peek(t); | |
6171 | t = peek(t); | |
6172 | } | |
6173 | } | |
6174 | else | |
6175 | { | |
6176 | // [ expression ] | |
6177 | // [ expression .. expression ] | |
6178 | if (!isExpression(&t)) | |
6179 | return false; | |
6180 | if (t->value == TOKslice) | |
6181 | { | |
6182 | t = peek(t); | |
6183 | if (!isExpression(&t)) | |
6184 | return false; | |
6185 | if (t->value != TOKrbracket) | |
6186 | return false; | |
6187 | t = peek(t); | |
6188 | } | |
6189 | else | |
6190 | { | |
6191 | if (t->value != TOKrbracket) | |
6192 | return false; | |
6193 | t = peek(t); | |
6194 | ||
6195 | // ...[index].ident | |
6196 | if (t->value == TOKdot && peek(t)->value == TOKidentifier) | |
6197 | { | |
6198 | t = peek(t); | |
6199 | t = peek(t); | |
6200 | } | |
6201 | } | |
6202 | } | |
6203 | continue; | |
6204 | ||
6205 | case TOKidentifier: | |
6206 | if (*haveId) | |
6207 | return false; | |
6208 | *haveId = true; | |
6209 | t = peek(t); | |
6210 | break; | |
6211 | ||
6212 | case TOKlparen: | |
6213 | if (!allowAltSyntax) | |
6214 | return false; // Do not recognize C-style declarations. | |
6215 | ||
6216 | t = peek(t); | |
6217 | ||
6218 | if (t->value == TOKrparen) | |
6219 | return false; // () is not a declarator | |
6220 | ||
6221 | /* Regard ( identifier ) as not a declarator | |
6222 | * BUG: what about ( *identifier ) in | |
6223 | * f(*p)(x); | |
6224 | * where f is a class instance with overloaded () ? | |
6225 | * Should we just disallow C-style function pointer declarations? | |
6226 | */ | |
6227 | if (t->value == TOKidentifier) | |
6228 | { Token *t2 = peek(t); | |
6229 | if (t2->value == TOKrparen) | |
6230 | return false; | |
6231 | } | |
6232 | ||
6233 | ||
6234 | if (!isDeclarator(&t, haveId, NULL, TOKrparen)) | |
6235 | return false; | |
6236 | t = peek(t); | |
6237 | parens = true; | |
6238 | break; | |
6239 | ||
6240 | case TOKdelegate: | |
6241 | case TOKfunction: | |
6242 | t = peek(t); | |
6243 | if (!isParameters(&t)) | |
6244 | return false; | |
6245 | skipAttributes(t, &t); | |
6246 | continue; | |
6247 | default: break; | |
6248 | } | |
6249 | break; | |
6250 | } | |
6251 | ||
6252 | while (1) | |
6253 | { | |
6254 | switch (t->value) | |
6255 | { | |
6256 | #if CARRAYDECL | |
6257 | case TOKlbracket: | |
6258 | parens = false; | |
6259 | t = peek(t); | |
6260 | if (t->value == TOKrbracket) | |
6261 | { | |
6262 | t = peek(t); | |
6263 | } | |
6264 | else if (isDeclaration(t, 0, TOKrbracket, &t)) | |
6265 | { // It's an associative array declaration | |
6266 | t = peek(t); | |
6267 | } | |
6268 | else | |
6269 | { | |
6270 | // [ expression ] | |
6271 | if (!isExpression(&t)) | |
6272 | return false; | |
6273 | if (t->value != TOKrbracket) | |
6274 | return false; | |
6275 | t = peek(t); | |
6276 | } | |
6277 | continue; | |
6278 | #endif | |
6279 | ||
6280 | case TOKlparen: | |
6281 | parens = false; | |
6282 | if (Token *tk = peekPastParen(t)) | |
6283 | { | |
6284 | if (tk->value == TOKlparen) | |
6285 | { | |
6286 | if (!haveTpl) return false; | |
6287 | *haveTpl = 1; | |
6288 | t = tk; | |
6289 | } | |
6290 | else if (tk->value == TOKassign) | |
6291 | { | |
6292 | if (!haveTpl) return false; | |
6293 | *haveTpl = 1; | |
6294 | *pt = tk; | |
6295 | return true; | |
6296 | } | |
6297 | } | |
6298 | if (!isParameters(&t)) | |
6299 | return false; | |
6300 | while (1) | |
6301 | { | |
6302 | switch (t->value) | |
6303 | { | |
6304 | case TOKconst: | |
6305 | case TOKimmutable: | |
6306 | case TOKshared: | |
6307 | case TOKwild: | |
6308 | case TOKpure: | |
6309 | case TOKnothrow: | |
6310 | case TOKreturn: | |
6311 | case TOKscope: | |
6312 | t = peek(t); | |
6313 | continue; | |
6314 | case TOKat: | |
6315 | t = peek(t); // skip '@' | |
6316 | t = peek(t); // skip identifier | |
6317 | continue; | |
6318 | default: | |
6319 | break; | |
6320 | } | |
6321 | break; | |
6322 | } | |
6323 | continue; | |
6324 | ||
6325 | case TOKidentifier: | |
6326 | if (t->ident != Id::_body) | |
6327 | goto Ldefault; | |
6328 | /* fall through */ | |
6329 | ||
6330 | // Valid tokens that follow a declaration | |
6331 | case TOKrparen: | |
6332 | case TOKrbracket: | |
6333 | case TOKassign: | |
6334 | case TOKcomma: | |
6335 | case TOKdotdotdot: | |
6336 | case TOKsemicolon: | |
6337 | case TOKlcurly: | |
6338 | case TOKin: | |
6339 | case TOKout: | |
6340 | case TOKdo: | |
6341 | // The !parens is to disallow unnecessary parentheses | |
6342 | if (!parens && (endtok == TOKreserved || endtok == t->value)) | |
6343 | { *pt = t; | |
6344 | return true; | |
6345 | } | |
6346 | return false; | |
6347 | ||
6348 | case TOKif: | |
6349 | return haveTpl ? true : false; | |
6350 | ||
6351 | default: | |
6352 | Ldefault: | |
6353 | return false; | |
6354 | } | |
6355 | } | |
6356 | assert(0); | |
6357 | } | |
6358 | ||
6359 | ||
6360 | bool Parser::isParameters(Token **pt) | |
6361 | { // This code parallels parseParameters() | |
6362 | Token *t = *pt; | |
6363 | ||
6364 | //printf("isParameters()\n"); | |
6365 | if (t->value != TOKlparen) | |
6366 | return false; | |
6367 | ||
6368 | t = peek(t); | |
6369 | for (;1; t = peek(t)) | |
6370 | { | |
6371 | L1: | |
6372 | switch (t->value) | |
6373 | { | |
6374 | case TOKrparen: | |
6375 | break; | |
6376 | ||
6377 | case TOKdotdotdot: | |
6378 | t = peek(t); | |
6379 | break; | |
6380 | ||
6381 | case TOKin: | |
6382 | case TOKout: | |
6383 | case TOKref: | |
6384 | case TOKlazy: | |
6385 | case TOKscope: | |
6386 | case TOKfinal: | |
6387 | case TOKauto: | |
6388 | case TOKreturn: | |
6389 | continue; | |
6390 | ||
6391 | case TOKconst: | |
6392 | case TOKimmutable: | |
6393 | case TOKshared: | |
6394 | case TOKwild: | |
6395 | t = peek(t); | |
6396 | if (t->value == TOKlparen) | |
6397 | { | |
6398 | t = peek(t); | |
6399 | if (!isDeclaration(t, 0, TOKrparen, &t)) | |
6400 | return false; | |
6401 | t = peek(t); // skip past closing ')' | |
6402 | goto L2; | |
6403 | } | |
6404 | goto L1; | |
6405 | ||
6406 | default: | |
6407 | { if (!isBasicType(&t)) | |
6408 | return false; | |
6409 | L2: | |
6410 | int tmp = false; | |
6411 | if (t->value != TOKdotdotdot && | |
6412 | !isDeclarator(&t, &tmp, NULL, TOKreserved)) | |
6413 | return false; | |
6414 | if (t->value == TOKassign) | |
6415 | { t = peek(t); | |
6416 | if (!isExpression(&t)) | |
6417 | return false; | |
6418 | } | |
6419 | if (t->value == TOKdotdotdot) | |
6420 | { | |
6421 | t = peek(t); | |
6422 | break; | |
6423 | } | |
6424 | } | |
6425 | if (t->value == TOKcomma) | |
6426 | { | |
6427 | continue; | |
6428 | } | |
6429 | break; | |
6430 | } | |
6431 | break; | |
6432 | } | |
6433 | if (t->value != TOKrparen) | |
6434 | return false; | |
6435 | t = peek(t); | |
6436 | *pt = t; | |
6437 | return true; | |
6438 | } | |
6439 | ||
6440 | bool Parser::isExpression(Token **pt) | |
6441 | { | |
6442 | // This is supposed to determine if something is an expression. | |
6443 | // What it actually does is scan until a closing right bracket | |
6444 | // is found. | |
6445 | ||
6446 | Token *t = *pt; | |
6447 | int brnest = 0; | |
6448 | int panest = 0; | |
6449 | int curlynest = 0; | |
6450 | ||
6451 | for (;; t = peek(t)) | |
6452 | { | |
6453 | switch (t->value) | |
6454 | { | |
6455 | case TOKlbracket: | |
6456 | brnest++; | |
6457 | continue; | |
6458 | ||
6459 | case TOKrbracket: | |
6460 | if (--brnest >= 0) | |
6461 | continue; | |
6462 | break; | |
6463 | ||
6464 | case TOKlparen: | |
6465 | panest++; | |
6466 | continue; | |
6467 | ||
6468 | case TOKcomma: | |
6469 | if (brnest || panest) | |
6470 | continue; | |
6471 | break; | |
6472 | ||
6473 | case TOKrparen: | |
6474 | if (--panest >= 0) | |
6475 | continue; | |
6476 | break; | |
6477 | ||
6478 | case TOKlcurly: | |
6479 | curlynest++; | |
6480 | continue; | |
6481 | ||
6482 | case TOKrcurly: | |
6483 | if (--curlynest >= 0) | |
6484 | continue; | |
6485 | return false; | |
6486 | ||
6487 | case TOKslice: | |
6488 | if (brnest) | |
6489 | continue; | |
6490 | break; | |
6491 | ||
6492 | case TOKsemicolon: | |
6493 | if (curlynest) | |
6494 | continue; | |
6495 | return false; | |
6496 | ||
6497 | case TOKeof: | |
6498 | return false; | |
6499 | ||
6500 | default: | |
6501 | continue; | |
6502 | } | |
6503 | break; | |
6504 | } | |
6505 | ||
6506 | *pt = t; | |
6507 | return true; | |
6508 | } | |
6509 | ||
6510 | /******************************************* | |
6511 | * Skip parens, brackets. | |
6512 | * Input: | |
6513 | * t is on opening ( | |
6514 | * Output: | |
6515 | * *pt is set to closing token, which is ')' on success | |
6516 | * Returns: | |
6517 | * true successful | |
6518 | * false some parsing error | |
6519 | */ | |
6520 | ||
6521 | bool Parser::skipParens(Token *t, Token **pt) | |
6522 | { | |
6523 | if (t->value != TOKlparen) | |
6524 | return false; | |
6525 | ||
6526 | int parens = 0; | |
6527 | ||
6528 | while (1) | |
6529 | { | |
6530 | switch (t->value) | |
6531 | { | |
6532 | case TOKlparen: | |
6533 | parens++; | |
6534 | break; | |
6535 | ||
6536 | case TOKrparen: | |
6537 | parens--; | |
6538 | if (parens < 0) | |
6539 | goto Lfalse; | |
6540 | if (parens == 0) | |
6541 | goto Ldone; | |
6542 | break; | |
6543 | ||
6544 | case TOKeof: | |
6545 | goto Lfalse; | |
6546 | ||
6547 | default: | |
6548 | break; | |
6549 | } | |
6550 | t = peek(t); | |
6551 | } | |
6552 | ||
6553 | Ldone: | |
6554 | if (pt) | |
6555 | *pt = peek(t); // skip found rparen | |
6556 | return true; | |
6557 | ||
6558 | Lfalse: | |
6559 | return false; | |
6560 | } | |
6561 | ||
6562 | bool Parser::skipParensIf(Token *t, Token **pt) | |
6563 | { | |
6564 | if (t->value != TOKlparen) | |
6565 | { | |
6566 | if (pt) | |
6567 | *pt = t; | |
6568 | return true; | |
6569 | } | |
6570 | return skipParens(t, pt); | |
6571 | } | |
6572 | ||
6573 | /******************************************* | |
6574 | * Skip attributes. | |
6575 | * Input: | |
6576 | * t is on a candidate attribute | |
6577 | * Output: | |
6578 | * *pt is set to first non-attribute token on success | |
6579 | * Returns: | |
6580 | * true successful | |
6581 | * false some parsing error | |
6582 | */ | |
6583 | ||
6584 | bool Parser::skipAttributes(Token *t, Token **pt) | |
6585 | { | |
6586 | while (1) | |
6587 | { | |
6588 | switch (t->value) | |
6589 | { | |
6590 | case TOKconst: | |
6591 | case TOKimmutable: | |
6592 | case TOKshared: | |
6593 | case TOKwild: | |
6594 | case TOKfinal: | |
6595 | case TOKauto: | |
6596 | case TOKscope: | |
6597 | case TOKoverride: | |
6598 | case TOKabstract: | |
6599 | case TOKsynchronized: | |
6600 | break; | |
6601 | case TOKdeprecated: | |
6602 | if (peek(t)->value == TOKlparen) | |
6603 | { | |
6604 | t = peek(t); | |
6605 | if (!skipParens(t, &t)) | |
6606 | goto Lerror; | |
6607 | // t is on the next of closing parenthesis | |
6608 | continue; | |
6609 | } | |
6610 | break; | |
6611 | case TOKnothrow: | |
6612 | case TOKpure: | |
6613 | case TOKref: | |
6614 | case TOKgshared: | |
6615 | case TOKreturn: | |
6616 | //case TOKmanifest: | |
6617 | break; | |
6618 | case TOKat: | |
6619 | t = peek(t); | |
6620 | if (t->value == TOKidentifier) | |
6621 | { | |
6622 | /* @identifier | |
6623 | * @identifier!arg | |
6624 | * @identifier!(arglist) | |
6625 | * any of the above followed by (arglist) | |
6626 | * @predefined_attribute | |
6627 | */ | |
6628 | if (t->ident == Id::property || | |
6629 | t->ident == Id::nogc || | |
6630 | t->ident == Id::safe || | |
6631 | t->ident == Id::trusted || | |
6632 | t->ident == Id::system || | |
6633 | t->ident == Id::disable) | |
6634 | break; | |
6635 | t = peek(t); | |
6636 | if (t->value == TOKnot) | |
6637 | { | |
6638 | t = peek(t); | |
6639 | if (t->value == TOKlparen) | |
6640 | { | |
6641 | // @identifier!(arglist) | |
6642 | if (!skipParens(t, &t)) | |
6643 | goto Lerror; | |
6644 | // t is on the next of closing parenthesis | |
6645 | } | |
6646 | else | |
6647 | { | |
6648 | // @identifier!arg | |
6649 | // Do low rent skipTemplateArgument | |
6650 | if (t->value == TOKvector) | |
6651 | { | |
6652 | // identifier!__vector(type) | |
6653 | t = peek(t); | |
6654 | if (!skipParens(t, &t)) | |
6655 | goto Lerror; | |
6656 | } | |
6657 | else | |
6658 | t = peek(t); | |
6659 | } | |
6660 | } | |
6661 | if (t->value == TOKlparen) | |
6662 | { | |
6663 | if (!skipParens(t, &t)) | |
6664 | goto Lerror; | |
6665 | // t is on the next of closing parenthesis | |
6666 | continue; | |
6667 | } | |
6668 | continue; | |
6669 | } | |
6670 | if (t->value == TOKlparen) | |
6671 | { | |
6672 | // @( ArgumentList ) | |
6673 | if (!skipParens(t, &t)) | |
6674 | goto Lerror; | |
6675 | // t is on the next of closing parenthesis | |
6676 | continue; | |
6677 | } | |
6678 | goto Lerror; | |
6679 | default: | |
6680 | goto Ldone; | |
6681 | } | |
6682 | t = peek(t); | |
6683 | } | |
6684 | ||
6685 | Ldone: | |
6686 | if (pt) | |
6687 | *pt = t; | |
6688 | return true; | |
6689 | ||
6690 | Lerror: | |
6691 | return false; | |
6692 | } | |
6693 | ||
6694 | /********************************* Expression Parser ***************************/ | |
6695 | ||
6696 | Expression *Parser::parsePrimaryExp() | |
6697 | { | |
6698 | Expression *e; | |
6699 | Type *t; | |
6700 | Identifier *id; | |
6701 | Loc loc = token.loc; | |
6702 | ||
6703 | //printf("parsePrimaryExp(): loc = %d\n", loc.linnum); | |
6704 | switch (token.value) | |
6705 | { | |
6706 | case TOKidentifier: | |
6707 | { | |
6708 | Token *t1 = peek(&token); | |
6709 | Token *t2 = peek(t1); | |
6710 | if (t1->value == TOKmin && t2->value == TOKgt) | |
6711 | { | |
6712 | // skip ident. | |
6713 | nextToken(); | |
6714 | nextToken(); | |
6715 | nextToken(); | |
6716 | error("use `.` for member lookup, not `->`"); | |
6717 | goto Lerr; | |
6718 | } | |
6719 | ||
6720 | if (peekNext() == TOKgoesto) | |
6721 | goto case_delegate; | |
6722 | ||
6723 | id = token.ident; | |
6724 | nextToken(); | |
6725 | TOK save; | |
6726 | if (token.value == TOKnot && (save = peekNext()) != TOKis && save != TOKin) | |
6727 | { | |
6728 | // identifier!(template-argument-list) | |
6729 | TemplateInstance *tempinst; | |
6730 | tempinst = new TemplateInstance(loc, id); | |
6731 | tempinst->tiargs = parseTemplateArguments(); | |
6732 | e = new ScopeExp(loc, tempinst); | |
6733 | } | |
6734 | else | |
6735 | e = new IdentifierExp(loc, id); | |
6736 | break; | |
6737 | } | |
6738 | ||
6739 | case TOKdollar: | |
6740 | if (!inBrackets) | |
6741 | error("'$' is valid only inside [] of index or slice"); | |
6742 | e = new DollarExp(loc); | |
6743 | nextToken(); | |
6744 | break; | |
6745 | ||
6746 | case TOKdot: | |
6747 | // Signal global scope '.' operator with "" identifier | |
6748 | e = new IdentifierExp(loc, Id::empty); | |
6749 | break; | |
6750 | ||
6751 | case TOKthis: | |
6752 | e = new ThisExp(loc); | |
6753 | nextToken(); | |
6754 | break; | |
6755 | ||
6756 | case TOKsuper: | |
6757 | e = new SuperExp(loc); | |
6758 | nextToken(); | |
6759 | break; | |
6760 | ||
6761 | case TOKint32v: | |
6762 | e = new IntegerExp(loc, (d_int32)token.int64value, Type::tint32); | |
6763 | nextToken(); | |
6764 | break; | |
6765 | ||
6766 | case TOKuns32v: | |
6767 | e = new IntegerExp(loc, (d_uns32)token.uns64value, Type::tuns32); | |
6768 | nextToken(); | |
6769 | break; | |
6770 | ||
6771 | case TOKint64v: | |
6772 | e = new IntegerExp(loc, token.int64value, Type::tint64); | |
6773 | nextToken(); | |
6774 | break; | |
6775 | ||
6776 | case TOKuns64v: | |
6777 | e = new IntegerExp(loc, token.uns64value, Type::tuns64); | |
6778 | nextToken(); | |
6779 | break; | |
6780 | ||
6781 | case TOKfloat32v: | |
6782 | e = new RealExp(loc, token.floatvalue, Type::tfloat32); | |
6783 | nextToken(); | |
6784 | break; | |
6785 | ||
6786 | case TOKfloat64v: | |
6787 | e = new RealExp(loc, token.floatvalue, Type::tfloat64); | |
6788 | nextToken(); | |
6789 | break; | |
6790 | ||
6791 | case TOKfloat80v: | |
6792 | e = new RealExp(loc, token.floatvalue, Type::tfloat80); | |
6793 | nextToken(); | |
6794 | break; | |
6795 | ||
6796 | case TOKimaginary32v: | |
6797 | e = new RealExp(loc, token.floatvalue, Type::timaginary32); | |
6798 | nextToken(); | |
6799 | break; | |
6800 | ||
6801 | case TOKimaginary64v: | |
6802 | e = new RealExp(loc, token.floatvalue, Type::timaginary64); | |
6803 | nextToken(); | |
6804 | break; | |
6805 | ||
6806 | case TOKimaginary80v: | |
6807 | e = new RealExp(loc, token.floatvalue, Type::timaginary80); | |
6808 | nextToken(); | |
6809 | break; | |
6810 | ||
6811 | case TOKnull: | |
6812 | e = new NullExp(loc); | |
6813 | nextToken(); | |
6814 | break; | |
6815 | ||
6816 | case TOKfile: | |
6817 | { | |
6818 | const char *s = loc.filename ? loc.filename : mod->ident->toChars(); | |
6819 | e = new StringExp(loc, const_cast<char *>(s), strlen(s), 0); | |
6820 | nextToken(); | |
6821 | break; | |
6822 | } | |
6823 | ||
6824 | case TOKfilefullpath: | |
6825 | { | |
6826 | const char *srcfile = mod->srcfile->name->toChars(); | |
6827 | const char *s; | |
6828 | if (loc.filename && !FileName::equals(loc.filename, srcfile)) | |
6829 | s = loc.filename; | |
6830 | else | |
6831 | s = FileName::combine(mod->srcfilePath, srcfile); | |
6832 | e = new StringExp(loc, const_cast<char *>(s), strlen(s), 0); | |
6833 | nextToken(); | |
6834 | break; | |
6835 | } | |
6836 | ||
6837 | case TOKline: | |
6838 | e = new IntegerExp(loc, loc.linnum, Type::tint32); | |
6839 | nextToken(); | |
6840 | break; | |
6841 | ||
6842 | case TOKmodulestring: | |
6843 | { | |
6844 | const char *s = md ? md->toChars() : mod->toChars(); | |
6845 | e = new StringExp(loc, const_cast<char *>(s), strlen(s), 0); | |
6846 | nextToken(); | |
6847 | break; | |
6848 | } | |
6849 | ||
6850 | case TOKfuncstring: | |
6851 | e = new FuncInitExp(loc); | |
6852 | nextToken(); | |
6853 | break; | |
6854 | ||
6855 | case TOKprettyfunc: | |
6856 | e = new PrettyFuncInitExp(loc); | |
6857 | nextToken(); | |
6858 | break; | |
6859 | ||
6860 | case TOKtrue: | |
6861 | e = new IntegerExp(loc, 1, Type::tbool); | |
6862 | nextToken(); | |
6863 | break; | |
6864 | ||
6865 | case TOKfalse: | |
6866 | e = new IntegerExp(loc, 0, Type::tbool); | |
6867 | nextToken(); | |
6868 | break; | |
6869 | ||
6870 | case TOKcharv: | |
6871 | e = new IntegerExp(loc, (d_uns8)token.uns64value, Type::tchar); | |
6872 | nextToken(); | |
6873 | break; | |
6874 | ||
6875 | case TOKwcharv: | |
6876 | e = new IntegerExp(loc, (d_uns16)token.uns64value, Type::twchar); | |
6877 | nextToken(); | |
6878 | break; | |
6879 | ||
6880 | case TOKdcharv: | |
6881 | e = new IntegerExp(loc, (d_uns32)token.uns64value, Type::tdchar); | |
6882 | nextToken(); | |
6883 | break; | |
6884 | ||
6885 | case TOKstring: | |
6886 | case TOKxstring: | |
6887 | { | |
6888 | // cat adjacent strings | |
6889 | utf8_t *s = token.ustring; | |
6890 | size_t len = token.len; | |
6891 | unsigned char postfix = token.postfix; | |
6892 | while (1) | |
6893 | { | |
6894 | const Token prev = token; | |
6895 | nextToken(); | |
6896 | if (token.value == TOKstring || | |
6897 | token.value == TOKxstring) | |
6898 | { | |
6899 | if (token.postfix) | |
6900 | { if (token.postfix != postfix) | |
6901 | error("mismatched string literal postfixes '%c' and '%c'", postfix, token.postfix); | |
6902 | postfix = token.postfix; | |
6903 | } | |
6904 | ||
6905 | deprecation("Implicit string concatenation is deprecated, use %s ~ %s instead", | |
6906 | prev.toChars(), token.toChars()); | |
6907 | ||
6908 | size_t len1 = len; | |
6909 | size_t len2 = token.len; | |
6910 | len = len1 + len2; | |
6911 | utf8_t *s2 = (utf8_t *)mem.xmalloc((len + 1) * sizeof(utf8_t)); | |
6912 | memcpy(s2, s, len1 * sizeof(utf8_t)); | |
6913 | memcpy(s2 + len1, token.ustring, (len2 + 1) * sizeof(utf8_t)); | |
6914 | s = s2; | |
6915 | } | |
6916 | else | |
6917 | break; | |
6918 | } | |
6919 | e = new StringExp(loc, s, len, postfix); | |
6920 | break; | |
6921 | } | |
6922 | ||
6923 | case TOKvoid: t = Type::tvoid; goto LabelX; | |
6924 | case TOKint8: t = Type::tint8; goto LabelX; | |
6925 | case TOKuns8: t = Type::tuns8; goto LabelX; | |
6926 | case TOKint16: t = Type::tint16; goto LabelX; | |
6927 | case TOKuns16: t = Type::tuns16; goto LabelX; | |
6928 | case TOKint32: t = Type::tint32; goto LabelX; | |
6929 | case TOKuns32: t = Type::tuns32; goto LabelX; | |
6930 | case TOKint64: t = Type::tint64; goto LabelX; | |
6931 | case TOKuns64: t = Type::tuns64; goto LabelX; | |
6932 | case TOKint128: t = Type::tint128; goto LabelX; | |
6933 | case TOKuns128: t = Type::tuns128; goto LabelX; | |
6934 | case TOKfloat32: t = Type::tfloat32; goto LabelX; | |
6935 | case TOKfloat64: t = Type::tfloat64; goto LabelX; | |
6936 | case TOKfloat80: t = Type::tfloat80; goto LabelX; | |
6937 | case TOKimaginary32: t = Type::timaginary32; goto LabelX; | |
6938 | case TOKimaginary64: t = Type::timaginary64; goto LabelX; | |
6939 | case TOKimaginary80: t = Type::timaginary80; goto LabelX; | |
6940 | case TOKcomplex32: t = Type::tcomplex32; goto LabelX; | |
6941 | case TOKcomplex64: t = Type::tcomplex64; goto LabelX; | |
6942 | case TOKcomplex80: t = Type::tcomplex80; goto LabelX; | |
6943 | case TOKbool: t = Type::tbool; goto LabelX; | |
6944 | case TOKchar: t = Type::tchar; goto LabelX; | |
6945 | case TOKwchar: t = Type::twchar; goto LabelX; | |
6946 | case TOKdchar: t = Type::tdchar; goto LabelX; | |
6947 | LabelX: | |
6948 | nextToken(); | |
6949 | if (token.value == TOKlparen) | |
6950 | { | |
6951 | e = new TypeExp(loc, t); | |
6952 | e = new CallExp(loc, e, parseArguments()); | |
6953 | break; | |
6954 | } | |
6955 | check(TOKdot, t->toChars()); | |
6956 | if (token.value != TOKidentifier) | |
6957 | { error("found '%s' when expecting identifier following '%s.'", token.toChars(), t->toChars()); | |
6958 | goto Lerr; | |
6959 | } | |
6960 | e = typeDotIdExp(loc, t, token.ident); | |
6961 | nextToken(); | |
6962 | break; | |
6963 | ||
6964 | case TOKtypeof: | |
6965 | { | |
6966 | t = parseTypeof(); | |
6967 | e = new TypeExp(loc, t); | |
6968 | break; | |
6969 | } | |
6970 | ||
6971 | case TOKvector: | |
6972 | { | |
6973 | t = parseVector(); | |
6974 | e = new TypeExp(loc, t); | |
6975 | break; | |
6976 | } | |
6977 | ||
6978 | case TOKtypeid: | |
6979 | { | |
6980 | nextToken(); | |
6981 | check(TOKlparen, "typeid"); | |
6982 | RootObject *o; | |
6983 | if (isDeclaration(&token, 0, TOKreserved, NULL)) | |
6984 | { // argument is a type | |
6985 | o = parseType(); | |
6986 | } | |
6987 | else | |
6988 | { // argument is an expression | |
6989 | o = parseAssignExp(); | |
6990 | } | |
6991 | check(TOKrparen); | |
6992 | e = new TypeidExp(loc, o); | |
6993 | break; | |
6994 | } | |
6995 | ||
6996 | case TOKtraits: | |
6997 | { /* __traits(identifier, args...) | |
6998 | */ | |
6999 | Identifier *ident; | |
7000 | Objects *args = NULL; | |
7001 | ||
7002 | nextToken(); | |
7003 | check(TOKlparen); | |
7004 | if (token.value != TOKidentifier) | |
7005 | { error("__traits(identifier, args...) expected"); | |
7006 | goto Lerr; | |
7007 | } | |
7008 | ident = token.ident; | |
7009 | nextToken(); | |
7010 | if (token.value == TOKcomma) | |
7011 | args = parseTemplateArgumentList(); // __traits(identifier, args...) | |
7012 | else | |
7013 | check(TOKrparen); // __traits(identifier) | |
7014 | ||
7015 | e = new TraitsExp(loc, ident, args); | |
7016 | break; | |
7017 | } | |
7018 | ||
7019 | case TOKis: | |
7020 | { | |
7021 | Type *targ; | |
7022 | Identifier *ident = NULL; | |
7023 | Type *tspec = NULL; | |
7024 | TOK tok = TOKreserved; | |
7025 | TOK tok2 = TOKreserved; | |
7026 | TemplateParameters *tpl = NULL; | |
7027 | ||
7028 | nextToken(); | |
7029 | if (token.value == TOKlparen) | |
7030 | { | |
7031 | nextToken(); | |
7032 | targ = parseType(&ident); | |
7033 | if (token.value == TOKcolon || token.value == TOKequal) | |
7034 | { | |
7035 | tok = token.value; | |
7036 | nextToken(); | |
7037 | if (tok == TOKequal && | |
7038 | (token.value == TOKstruct || | |
7039 | token.value == TOKunion || | |
7040 | token.value == TOKclass || | |
7041 | token.value == TOKsuper || | |
7042 | token.value == TOKenum || | |
7043 | token.value == TOKinterface || | |
7044 | token.value == TOKargTypes || | |
7045 | token.value == TOKparameters || | |
7046 | (token.value == TOKconst && peek(&token)->value == TOKrparen) || | |
7047 | (token.value == TOKimmutable && peek(&token)->value == TOKrparen) || | |
7048 | (token.value == TOKshared && peek(&token)->value == TOKrparen) || | |
7049 | (token.value == TOKwild && peek(&token)->value == TOKrparen) || | |
7050 | token.value == TOKfunction || | |
7051 | token.value == TOKdelegate || | |
7052 | token.value == TOKreturn || | |
7053 | (token.value == TOKvector && peek(&token)->value == TOKrparen))) | |
7054 | { | |
7055 | tok2 = token.value; | |
7056 | nextToken(); | |
7057 | } | |
7058 | else | |
7059 | { | |
7060 | tspec = parseType(); | |
7061 | } | |
7062 | } | |
7063 | if (tspec) | |
7064 | { | |
7065 | if (token.value == TOKcomma) | |
7066 | tpl = parseTemplateParameterList(1); | |
7067 | else | |
7068 | { | |
7069 | tpl = new TemplateParameters(); | |
7070 | check(TOKrparen); | |
7071 | } | |
7072 | } | |
7073 | else | |
7074 | check(TOKrparen); | |
7075 | } | |
7076 | else | |
7077 | { | |
7078 | error("(type identifier : specialization) expected following is"); | |
7079 | goto Lerr; | |
7080 | } | |
7081 | e = new IsExp(loc, targ, ident, tok, tspec, tok2, tpl); | |
7082 | break; | |
7083 | } | |
7084 | ||
7085 | case TOKassert: | |
7086 | { Expression *msg = NULL; | |
7087 | ||
7088 | nextToken(); | |
7089 | check(TOKlparen, "assert"); | |
7090 | e = parseAssignExp(); | |
7091 | if (token.value == TOKcomma) | |
7092 | { | |
7093 | nextToken(); | |
7094 | if (token.value != TOKrparen) | |
7095 | { | |
7096 | msg = parseAssignExp(); | |
7097 | if (token.value == TOKcomma) | |
7098 | nextToken(); | |
7099 | } | |
7100 | } | |
7101 | check(TOKrparen); | |
7102 | e = new AssertExp(loc, e, msg); | |
7103 | break; | |
7104 | } | |
7105 | ||
7106 | case TOKmixin: | |
7107 | { | |
7108 | nextToken(); | |
7109 | check(TOKlparen, "mixin"); | |
7110 | e = parseAssignExp(); | |
7111 | check(TOKrparen); | |
7112 | e = new CompileExp(loc, e); | |
7113 | break; | |
7114 | } | |
7115 | ||
7116 | case TOKimport: | |
7117 | { | |
7118 | nextToken(); | |
7119 | check(TOKlparen, "import"); | |
7120 | e = parseAssignExp(); | |
7121 | check(TOKrparen); | |
7122 | e = new ImportExp(loc, e); | |
7123 | break; | |
7124 | } | |
7125 | ||
7126 | case TOKnew: | |
7127 | e = parseNewExp(NULL); | |
7128 | break; | |
7129 | ||
7130 | case TOKlparen: | |
7131 | { | |
7132 | Token *tk = peekPastParen(&token); | |
7133 | if (skipAttributes(tk, &tk) && | |
7134 | (tk->value == TOKgoesto || tk->value == TOKlcurly)) | |
7135 | { | |
7136 | // (arguments) => expression | |
7137 | // (arguments) { statements... } | |
7138 | goto case_delegate; | |
7139 | } | |
7140 | ||
7141 | // ( expression ) | |
7142 | nextToken(); | |
7143 | e = parseExpression(); | |
7144 | e->parens = 1; | |
7145 | check(loc, TOKrparen); | |
7146 | break; | |
7147 | } | |
7148 | ||
7149 | case TOKlbracket: | |
7150 | { /* Parse array literals and associative array literals: | |
7151 | * [ value, value, value ... ] | |
7152 | * [ key:value, key:value, key:value ... ] | |
7153 | */ | |
7154 | Expressions *values = new Expressions(); | |
7155 | Expressions *keys = NULL; | |
7156 | ||
7157 | nextToken(); | |
7158 | while (token.value != TOKrbracket && token.value != TOKeof) | |
7159 | { | |
7160 | e = parseAssignExp(); | |
2cbc99d1 | 7161 | if (token.value == TOKcolon && (keys || values->length == 0)) |
b4c522fa IB |
7162 | { nextToken(); |
7163 | if (!keys) | |
7164 | keys = new Expressions(); | |
7165 | keys->push(e); | |
7166 | e = parseAssignExp(); | |
7167 | } | |
7168 | else if (keys) | |
7169 | { error("'key:value' expected for associative array literal"); | |
7170 | delete keys; | |
7171 | keys = NULL; | |
7172 | } | |
7173 | values->push(e); | |
7174 | if (token.value == TOKrbracket) | |
7175 | break; | |
7176 | check(TOKcomma); | |
7177 | } | |
7178 | check(loc, TOKrbracket); | |
7179 | ||
7180 | if (keys) | |
7181 | e = new AssocArrayLiteralExp(loc, keys, values); | |
7182 | else | |
255b2d91 | 7183 | e = new ArrayLiteralExp(loc, NULL, values); |
b4c522fa IB |
7184 | break; |
7185 | } | |
7186 | ||
7187 | case TOKlcurly: | |
7188 | case TOKfunction: | |
7189 | case TOKdelegate: | |
7190 | case_delegate: | |
7191 | { | |
7192 | Dsymbol *s = parseFunctionLiteral(); | |
7193 | e = new FuncExp(loc, s); | |
7194 | break; | |
7195 | } | |
7196 | ||
7197 | default: | |
7198 | error("expression expected, not '%s'", token.toChars()); | |
7199 | Lerr: | |
7200 | // Anything for e, as long as it's not NULL | |
7201 | e = new IntegerExp(loc, 0, Type::tint32); | |
7202 | nextToken(); | |
7203 | break; | |
7204 | } | |
7205 | return e; | |
7206 | } | |
7207 | ||
7208 | Expression *Parser::parsePostExp(Expression *e) | |
7209 | { | |
7210 | Loc loc; | |
7211 | ||
7212 | while (1) | |
7213 | { | |
7214 | loc = token.loc; | |
7215 | switch (token.value) | |
7216 | { | |
7217 | case TOKdot: | |
7218 | nextToken(); | |
7219 | if (token.value == TOKidentifier) | |
7220 | { Identifier *id = token.ident; | |
7221 | ||
7222 | nextToken(); | |
7223 | if (token.value == TOKnot && peekNext() != TOKis && peekNext() != TOKin) | |
7224 | { | |
7225 | Objects *tiargs = parseTemplateArguments(); | |
7226 | e = new DotTemplateInstanceExp(loc, e, id, tiargs); | |
7227 | } | |
7228 | else | |
7229 | e = new DotIdExp(loc, e, id); | |
7230 | continue; | |
7231 | } | |
7232 | else if (token.value == TOKnew) | |
7233 | { | |
7234 | e = parseNewExp(e); | |
7235 | continue; | |
7236 | } | |
7237 | else | |
7238 | error("identifier expected following '.', not '%s'", token.toChars()); | |
7239 | break; | |
7240 | ||
7241 | case TOKplusplus: | |
7242 | e = new PostExp(TOKplusplus, loc, e); | |
7243 | break; | |
7244 | ||
7245 | case TOKminusminus: | |
7246 | e = new PostExp(TOKminusminus, loc, e); | |
7247 | break; | |
7248 | ||
7249 | case TOKlparen: | |
7250 | e = new CallExp(loc, e, parseArguments()); | |
7251 | continue; | |
7252 | ||
7253 | case TOKlbracket: | |
7254 | { // array dereferences: | |
7255 | // array[index] | |
7256 | // array[] | |
7257 | // array[lwr .. upr] | |
7258 | Expression *index; | |
7259 | Expression *upr; | |
7260 | Expressions *arguments = new Expressions(); | |
7261 | ||
7262 | inBrackets++; | |
7263 | nextToken(); | |
7264 | while (token.value != TOKrbracket && token.value != TOKeof) | |
7265 | { | |
7266 | index = parseAssignExp(); | |
7267 | if (token.value == TOKslice) | |
7268 | { | |
7269 | // array[..., lwr..upr, ...] | |
7270 | nextToken(); | |
7271 | upr = parseAssignExp(); | |
7272 | arguments->push(new IntervalExp(loc, index, upr)); | |
7273 | } | |
7274 | else | |
7275 | arguments->push(index); | |
7276 | if (token.value == TOKrbracket) | |
7277 | break; | |
7278 | check(TOKcomma); | |
7279 | } | |
7280 | check(TOKrbracket); | |
7281 | inBrackets--; | |
7282 | e = new ArrayExp(loc, e, arguments); | |
7283 | continue; | |
7284 | } | |
7285 | ||
7286 | default: | |
7287 | return e; | |
7288 | } | |
7289 | nextToken(); | |
7290 | } | |
7291 | } | |
7292 | ||
7293 | Expression *Parser::parseUnaryExp() | |
7294 | { | |
7295 | Expression *e; | |
7296 | Loc loc = token.loc; | |
7297 | ||
7298 | switch (token.value) | |
7299 | { | |
7300 | case TOKand: | |
7301 | nextToken(); | |
7302 | e = parseUnaryExp(); | |
7303 | e = new AddrExp(loc, e); | |
7304 | break; | |
7305 | ||
7306 | case TOKplusplus: | |
7307 | nextToken(); | |
7308 | e = parseUnaryExp(); | |
7309 | //e = new AddAssignExp(loc, e, new IntegerExp(loc, 1, Type::tint32)); | |
7310 | e = new PreExp(TOKpreplusplus, loc, e); | |
7311 | break; | |
7312 | ||
7313 | case TOKminusminus: | |
7314 | nextToken(); | |
7315 | e = parseUnaryExp(); | |
7316 | //e = new MinAssignExp(loc, e, new IntegerExp(loc, 1, Type::tint32)); | |
7317 | e = new PreExp(TOKpreminusminus, loc, e); | |
7318 | break; | |
7319 | ||
7320 | case TOKmul: | |
7321 | nextToken(); | |
7322 | e = parseUnaryExp(); | |
7323 | e = new PtrExp(loc, e); | |
7324 | break; | |
7325 | ||
7326 | case TOKmin: | |
7327 | nextToken(); | |
7328 | e = parseUnaryExp(); | |
7329 | e = new NegExp(loc, e); | |
7330 | break; | |
7331 | ||
7332 | case TOKadd: | |
7333 | nextToken(); | |
7334 | e = parseUnaryExp(); | |
7335 | e = new UAddExp(loc, e); | |
7336 | break; | |
7337 | ||
7338 | case TOKnot: | |
7339 | nextToken(); | |
7340 | e = parseUnaryExp(); | |
7341 | e = new NotExp(loc, e); | |
7342 | break; | |
7343 | ||
7344 | case TOKtilde: | |
7345 | nextToken(); | |
7346 | e = parseUnaryExp(); | |
7347 | e = new ComExp(loc, e); | |
7348 | break; | |
7349 | ||
7350 | case TOKdelete: | |
7351 | nextToken(); | |
7352 | e = parseUnaryExp(); | |
7353 | e = new DeleteExp(loc, e, false); | |
7354 | break; | |
7355 | ||
7356 | case TOKcast: // cast(type) expression | |
7357 | { | |
7358 | nextToken(); | |
7359 | check(TOKlparen); | |
7360 | /* Look for cast(), cast(const), cast(immutable), | |
7361 | * cast(shared), cast(shared const), cast(wild), cast(shared wild) | |
7362 | */ | |
7363 | unsigned char m = 0; | |
7364 | while (1) | |
7365 | { | |
7366 | switch (token.value) | |
7367 | { | |
7368 | case TOKconst: | |
7369 | if (peekNext() == TOKlparen) | |
7370 | break; // const as type constructor | |
7371 | m |= MODconst; // const as storage class | |
7372 | nextToken(); | |
7373 | continue; | |
7374 | ||
7375 | case TOKimmutable: | |
7376 | if (peekNext() == TOKlparen) | |
7377 | break; | |
7378 | m |= MODimmutable; | |
7379 | nextToken(); | |
7380 | continue; | |
7381 | ||
7382 | case TOKshared: | |
7383 | if (peekNext() == TOKlparen) | |
7384 | break; | |
7385 | m |= MODshared; | |
7386 | nextToken(); | |
7387 | continue; | |
7388 | ||
7389 | case TOKwild: | |
7390 | if (peekNext() == TOKlparen) | |
7391 | break; | |
7392 | m |= MODwild; | |
7393 | nextToken(); | |
7394 | continue; | |
7395 | ||
7396 | default: | |
7397 | break; | |
7398 | } | |
7399 | break; | |
7400 | } | |
7401 | if (token.value == TOKrparen) | |
7402 | { | |
7403 | nextToken(); | |
7404 | e = parseUnaryExp(); | |
7405 | e = new CastExp(loc, e, m); | |
7406 | } | |
7407 | else | |
7408 | { | |
7409 | Type *t = parseType(); // cast( type ) | |
7410 | t = t->addMod(m); // cast( const type ) | |
7411 | check(TOKrparen); | |
7412 | e = parseUnaryExp(); | |
7413 | e = new CastExp(loc, e, t); | |
7414 | } | |
7415 | break; | |
7416 | } | |
7417 | ||
7418 | case TOKwild: | |
7419 | case TOKshared: | |
7420 | case TOKconst: | |
7421 | case TOKimmutable: // immutable(type)(arguments) / immutable(type).init | |
7422 | { | |
7423 | StorageClass stc = parseTypeCtor(); | |
7424 | Type *t = parseBasicType(); | |
7425 | t = t->addSTC(stc); | |
7426 | e = new TypeExp(loc, t); | |
7427 | if (stc == 0 && token.value == TOKdot) | |
7428 | { | |
7429 | nextToken(); | |
7430 | if (token.value != TOKidentifier) | |
7431 | { | |
7432 | error("identifier expected following (type)."); | |
7433 | return NULL; | |
7434 | } | |
7435 | e = typeDotIdExp(loc, t, token.ident); | |
7436 | nextToken(); | |
7437 | e = parsePostExp(e); | |
7438 | break; | |
7439 | } | |
7440 | else if (token.value != TOKlparen) | |
7441 | { | |
7442 | error("(arguments) expected following %s", t->toChars()); | |
7443 | return e; | |
7444 | } | |
7445 | e = new CallExp(loc, e, parseArguments()); | |
7446 | break; | |
7447 | } | |
7448 | ||
7449 | ||
7450 | case TOKlparen: | |
7451 | { Token *tk; | |
7452 | ||
7453 | tk = peek(&token); | |
7454 | #if CCASTSYNTAX | |
7455 | // If cast | |
7456 | if (isDeclaration(tk, 0, TOKrparen, &tk)) | |
7457 | { | |
7458 | tk = peek(tk); // skip over right parenthesis | |
7459 | switch (tk->value) | |
7460 | { | |
7461 | case TOKnot: | |
7462 | tk = peek(tk); | |
7463 | if (tk->value == TOKis || tk->value == TOKin) // !is or !in | |
7464 | break; | |
7465 | /* fall through */ | |
7466 | ||
7467 | case TOKdot: | |
7468 | case TOKplusplus: | |
7469 | case TOKminusminus: | |
7470 | case TOKdelete: | |
7471 | case TOKnew: | |
7472 | case TOKlparen: | |
7473 | case TOKidentifier: | |
7474 | case TOKthis: | |
7475 | case TOKsuper: | |
7476 | case TOKint32v: | |
7477 | case TOKuns32v: | |
7478 | case TOKint64v: | |
7479 | case TOKuns64v: | |
7480 | case TOKint128v: | |
7481 | case TOKuns128v: | |
7482 | case TOKfloat32v: | |
7483 | case TOKfloat64v: | |
7484 | case TOKfloat80v: | |
7485 | case TOKimaginary32v: | |
7486 | case TOKimaginary64v: | |
7487 | case TOKimaginary80v: | |
7488 | case TOKnull: | |
7489 | case TOKtrue: | |
7490 | case TOKfalse: | |
7491 | case TOKcharv: | |
7492 | case TOKwcharv: | |
7493 | case TOKdcharv: | |
7494 | case TOKstring: | |
7495 | case TOKfunction: | |
7496 | case TOKdelegate: | |
7497 | case TOKtypeof: | |
5b74dd0a | 7498 | case TOKtraits: |
b4c522fa IB |
7499 | case TOKvector: |
7500 | case TOKfile: | |
7501 | case TOKfilefullpath: | |
7502 | case TOKline: | |
7503 | case TOKmodulestring: | |
7504 | case TOKfuncstring: | |
7505 | case TOKprettyfunc: | |
7506 | case TOKwchar: case TOKdchar: | |
7507 | case TOKbool: case TOKchar: | |
7508 | case TOKint8: case TOKuns8: | |
7509 | case TOKint16: case TOKuns16: | |
7510 | case TOKint32: case TOKuns32: | |
7511 | case TOKint64: case TOKuns64: | |
7512 | case TOKint128: case TOKuns128: | |
7513 | case TOKfloat32: case TOKfloat64: case TOKfloat80: | |
7514 | case TOKimaginary32: case TOKimaginary64: case TOKimaginary80: | |
7515 | case TOKcomplex32: case TOKcomplex64: case TOKcomplex80: | |
7516 | case TOKvoid: | |
7517 | { // (type) una_exp | |
7518 | Type *t; | |
7519 | ||
7520 | nextToken(); | |
7521 | t = parseType(); | |
7522 | check(TOKrparen); | |
7523 | ||
7524 | // if .identifier | |
7525 | // or .identifier!( ... ) | |
7526 | if (token.value == TOKdot) | |
7527 | { | |
7528 | if (peekNext() != TOKidentifier && peekNext() != TOKnew) | |
7529 | { | |
7530 | error("identifier or new keyword expected following (...)."); | |
7531 | return NULL; | |
7532 | } | |
7533 | e = new TypeExp(loc, t); | |
442b5a66 | 7534 | e->parens = 1; |
b4c522fa IB |
7535 | e = parsePostExp(e); |
7536 | } | |
7537 | else | |
7538 | { | |
7539 | e = parseUnaryExp(); | |
7540 | e = new CastExp(loc, e, t); | |
7541 | error("C style cast illegal, use %s", e->toChars()); | |
7542 | } | |
7543 | return e; | |
7544 | } | |
7545 | default: | |
7546 | break; | |
7547 | } | |
7548 | } | |
7549 | #endif | |
7550 | e = parsePrimaryExp(); | |
7551 | e = parsePostExp(e); | |
7552 | break; | |
7553 | } | |
7554 | default: | |
7555 | e = parsePrimaryExp(); | |
7556 | e = parsePostExp(e); | |
7557 | break; | |
7558 | } | |
7559 | assert(e); | |
7560 | ||
7561 | // ^^ is right associative and has higher precedence than the unary operators | |
7562 | while (token.value == TOKpow) | |
7563 | { | |
7564 | nextToken(); | |
7565 | Expression *e2 = parseUnaryExp(); | |
7566 | e = new PowExp(loc, e, e2); | |
7567 | } | |
7568 | ||
7569 | return e; | |
7570 | } | |
7571 | ||
7572 | Expression *Parser::parseMulExp() | |
7573 | { | |
7574 | Expression *e; | |
7575 | Expression *e2; | |
7576 | Loc loc = token.loc; | |
7577 | ||
7578 | e = parseUnaryExp(); | |
7579 | while (1) | |
7580 | { | |
7581 | switch (token.value) | |
7582 | { | |
7583 | case TOKmul: nextToken(); e2 = parseUnaryExp(); e = new MulExp(loc,e,e2); continue; | |
7584 | case TOKdiv: nextToken(); e2 = parseUnaryExp(); e = new DivExp(loc,e,e2); continue; | |
7585 | case TOKmod: nextToken(); e2 = parseUnaryExp(); e = new ModExp(loc,e,e2); continue; | |
7586 | ||
7587 | default: | |
7588 | break; | |
7589 | } | |
7590 | break; | |
7591 | } | |
7592 | return e; | |
7593 | } | |
7594 | ||
7595 | Expression *Parser::parseAddExp() | |
7596 | { | |
7597 | Expression *e; | |
7598 | Expression *e2; | |
7599 | Loc loc = token.loc; | |
7600 | ||
7601 | e = parseMulExp(); | |
7602 | while (1) | |
7603 | { | |
7604 | switch (token.value) | |
7605 | { | |
7606 | case TOKadd: nextToken(); e2 = parseMulExp(); e = new AddExp(loc,e,e2); continue; | |
7607 | case TOKmin: nextToken(); e2 = parseMulExp(); e = new MinExp(loc,e,e2); continue; | |
7608 | case TOKtilde: nextToken(); e2 = parseMulExp(); e = new CatExp(loc,e,e2); continue; | |
7609 | ||
7610 | default: | |
7611 | break; | |
7612 | } | |
7613 | break; | |
7614 | } | |
7615 | return e; | |
7616 | } | |
7617 | ||
7618 | Expression *Parser::parseShiftExp() | |
7619 | { | |
7620 | Expression *e; | |
7621 | Expression *e2; | |
7622 | Loc loc = token.loc; | |
7623 | ||
7624 | e = parseAddExp(); | |
7625 | while (1) | |
7626 | { | |
7627 | switch (token.value) | |
7628 | { | |
7629 | case TOKshl: nextToken(); e2 = parseAddExp(); e = new ShlExp(loc,e,e2); continue; | |
7630 | case TOKshr: nextToken(); e2 = parseAddExp(); e = new ShrExp(loc,e,e2); continue; | |
7631 | case TOKushr: nextToken(); e2 = parseAddExp(); e = new UshrExp(loc,e,e2); continue; | |
7632 | ||
7633 | default: | |
7634 | break; | |
7635 | } | |
7636 | break; | |
7637 | } | |
7638 | return e; | |
7639 | } | |
7640 | ||
7641 | Expression *Parser::parseCmpExp() | |
7642 | { | |
7643 | Expression *e; | |
7644 | Expression *e2; | |
7645 | Token *t; | |
7646 | Loc loc = token.loc; | |
7647 | ||
7648 | e = parseShiftExp(); | |
7649 | TOK op = token.value; | |
7650 | ||
7651 | switch (op) | |
7652 | { | |
7653 | case TOKequal: | |
7654 | case TOKnotequal: | |
7655 | nextToken(); | |
7656 | e2 = parseShiftExp(); | |
7657 | e = new EqualExp(op, loc, e, e2); | |
7658 | break; | |
7659 | ||
7660 | case TOKis: | |
7661 | op = TOKidentity; | |
7662 | goto L1; | |
7663 | ||
7664 | case TOKnot: | |
7665 | // Attempt to identify '!is' | |
7666 | t = peek(&token); | |
7667 | if (t->value == TOKin) | |
7668 | { | |
7669 | nextToken(); | |
7670 | nextToken(); | |
7671 | e2 = parseShiftExp(); | |
7672 | e = new InExp(loc, e, e2); | |
7673 | e = new NotExp(loc, e); | |
7674 | break; | |
7675 | } | |
7676 | if (t->value != TOKis) | |
7677 | break; | |
7678 | nextToken(); | |
7679 | op = TOKnotidentity; | |
7680 | goto L1; | |
7681 | ||
7682 | L1: | |
7683 | nextToken(); | |
7684 | e2 = parseShiftExp(); | |
7685 | e = new IdentityExp(op, loc, e, e2); | |
7686 | break; | |
7687 | ||
7688 | case TOKlt: | |
7689 | case TOKle: | |
7690 | case TOKgt: | |
7691 | case TOKge: | |
7692 | case TOKunord: | |
7693 | case TOKlg: | |
7694 | case TOKleg: | |
7695 | case TOKule: | |
7696 | case TOKul: | |
7697 | case TOKuge: | |
7698 | case TOKug: | |
7699 | case TOKue: | |
7700 | nextToken(); | |
7701 | e2 = parseShiftExp(); | |
7702 | e = new CmpExp(op, loc, e, e2); | |
7703 | break; | |
7704 | ||
7705 | case TOKin: | |
7706 | nextToken(); | |
7707 | e2 = parseShiftExp(); | |
7708 | e = new InExp(loc, e, e2); | |
7709 | break; | |
7710 | ||
7711 | default: | |
7712 | break; | |
7713 | } | |
7714 | return e; | |
7715 | } | |
7716 | ||
7717 | Expression *Parser::parseAndExp() | |
7718 | { | |
7719 | Loc loc = token.loc; | |
7720 | ||
7721 | Expression *e = parseCmpExp(); | |
7722 | while (token.value == TOKand) | |
7723 | { | |
7724 | checkParens(TOKand, e); | |
7725 | nextToken(); | |
7726 | Expression *e2 = parseCmpExp(); | |
7727 | checkParens(TOKand, e2); | |
7728 | e = new AndExp(loc,e,e2); | |
7729 | loc = token.loc; | |
7730 | } | |
7731 | return e; | |
7732 | } | |
7733 | ||
7734 | Expression *Parser::parseXorExp() | |
7735 | { | |
7736 | Loc loc = token.loc; | |
7737 | ||
7738 | Expression *e = parseAndExp(); | |
7739 | while (token.value == TOKxor) | |
7740 | { | |
7741 | checkParens(TOKxor, e); | |
7742 | nextToken(); | |
7743 | Expression *e2 = parseAndExp(); | |
7744 | checkParens(TOKxor, e2); | |
7745 | e = new XorExp(loc, e, e2); | |
7746 | } | |
7747 | return e; | |
7748 | } | |
7749 | ||
7750 | Expression *Parser::parseOrExp() | |
7751 | { | |
7752 | Loc loc = token.loc; | |
7753 | ||
7754 | Expression *e = parseXorExp(); | |
7755 | while (token.value == TOKor) | |
7756 | { | |
7757 | checkParens(TOKor, e); | |
7758 | nextToken(); | |
7759 | Expression *e2 = parseXorExp(); | |
7760 | checkParens(TOKor, e2); | |
7761 | e = new OrExp(loc, e, e2); | |
7762 | } | |
7763 | return e; | |
7764 | } | |
7765 | ||
7766 | Expression *Parser::parseAndAndExp() | |
7767 | { | |
7768 | Expression *e; | |
7769 | Expression *e2; | |
7770 | Loc loc = token.loc; | |
7771 | ||
7772 | e = parseOrExp(); | |
7773 | while (token.value == TOKandand) | |
7774 | { | |
7775 | nextToken(); | |
7776 | e2 = parseOrExp(); | |
49a09af1 | 7777 | e = new LogicalExp(loc, TOKandand, e, e2); |
b4c522fa IB |
7778 | } |
7779 | return e; | |
7780 | } | |
7781 | ||
7782 | Expression *Parser::parseOrOrExp() | |
7783 | { | |
7784 | Expression *e; | |
7785 | Expression *e2; | |
7786 | Loc loc = token.loc; | |
7787 | ||
7788 | e = parseAndAndExp(); | |
7789 | while (token.value == TOKoror) | |
7790 | { | |
7791 | nextToken(); | |
7792 | e2 = parseAndAndExp(); | |
49a09af1 | 7793 | e = new LogicalExp(loc, TOKoror, e, e2); |
b4c522fa IB |
7794 | } |
7795 | return e; | |
7796 | } | |
7797 | ||
7798 | Expression *Parser::parseCondExp() | |
7799 | { | |
7800 | Expression *e; | |
7801 | Expression *e1; | |
7802 | Expression *e2; | |
7803 | Loc loc = token.loc; | |
7804 | ||
7805 | e = parseOrOrExp(); | |
7806 | if (token.value == TOKquestion) | |
7807 | { | |
7808 | nextToken(); | |
7809 | e1 = parseExpression(); | |
7810 | check(TOKcolon); | |
7811 | e2 = parseCondExp(); | |
7812 | e = new CondExp(loc, e, e1, e2); | |
7813 | } | |
7814 | return e; | |
7815 | } | |
7816 | ||
7817 | Expression *Parser::parseAssignExp() | |
7818 | { | |
7819 | Expression *e; | |
7820 | Expression *e2; | |
7821 | Loc loc; | |
7822 | ||
7823 | e = parseCondExp(); | |
7824 | while (1) | |
7825 | { | |
7826 | loc = token.loc; | |
7827 | switch (token.value) | |
7828 | { | |
7829 | case TOKassign: nextToken(); e2 = parseAssignExp(); e = new AssignExp(loc,e,e2); continue; | |
7830 | case TOKaddass: nextToken(); e2 = parseAssignExp(); e = new AddAssignExp(loc,e,e2); continue; | |
7831 | case TOKminass: nextToken(); e2 = parseAssignExp(); e = new MinAssignExp(loc,e,e2); continue; | |
7832 | case TOKmulass: nextToken(); e2 = parseAssignExp(); e = new MulAssignExp(loc,e,e2); continue; | |
7833 | case TOKdivass: nextToken(); e2 = parseAssignExp(); e = new DivAssignExp(loc,e,e2); continue; | |
7834 | case TOKmodass: nextToken(); e2 = parseAssignExp(); e = new ModAssignExp(loc,e,e2); continue; | |
7835 | case TOKpowass: nextToken(); e2 = parseAssignExp(); e = new PowAssignExp(loc,e,e2); continue; | |
7836 | case TOKandass: nextToken(); e2 = parseAssignExp(); e = new AndAssignExp(loc,e,e2); continue; | |
7837 | case TOKorass: nextToken(); e2 = parseAssignExp(); e = new OrAssignExp(loc,e,e2); continue; | |
7838 | case TOKxorass: nextToken(); e2 = parseAssignExp(); e = new XorAssignExp(loc,e,e2); continue; | |
7839 | case TOKshlass: nextToken(); e2 = parseAssignExp(); e = new ShlAssignExp(loc,e,e2); continue; | |
7840 | case TOKshrass: nextToken(); e2 = parseAssignExp(); e = new ShrAssignExp(loc,e,e2); continue; | |
7841 | case TOKushrass: nextToken(); e2 = parseAssignExp(); e = new UshrAssignExp(loc,e,e2); continue; | |
7842 | case TOKcatass: nextToken(); e2 = parseAssignExp(); e = new CatAssignExp(loc,e,e2); continue; | |
7843 | default: | |
7844 | break; | |
7845 | } | |
7846 | break; | |
7847 | } | |
7848 | return e; | |
7849 | } | |
7850 | ||
7851 | Expression *Parser::parseExpression() | |
7852 | { | |
7853 | Expression *e; | |
7854 | Expression *e2; | |
7855 | Loc loc = token.loc; | |
7856 | ||
7857 | //printf("Parser::parseExpression() loc = %d\n", loc.linnum); | |
7858 | e = parseAssignExp(); | |
7859 | while (token.value == TOKcomma) | |
7860 | { | |
7861 | nextToken(); | |
7862 | e2 = parseAssignExp(); | |
7863 | e = new CommaExp(loc, e, e2, false); | |
7864 | loc = token.loc; | |
7865 | } | |
7866 | return e; | |
7867 | } | |
7868 | ||
7869 | ||
7870 | /************************* | |
7871 | * Collect argument list. | |
7872 | * Assume current token is ',', '(' or '['. | |
7873 | */ | |
7874 | ||
7875 | Expressions *Parser::parseArguments() | |
7876 | { // function call | |
7877 | Expressions *arguments; | |
7878 | Expression *arg; | |
7879 | TOK endtok; | |
7880 | ||
7881 | arguments = new Expressions(); | |
7882 | if (token.value == TOKlbracket) | |
7883 | endtok = TOKrbracket; | |
7884 | else | |
7885 | endtok = TOKrparen; | |
7886 | ||
7887 | { | |
7888 | nextToken(); | |
7889 | while (token.value != endtok && token.value != TOKeof) | |
7890 | { | |
7891 | arg = parseAssignExp(); | |
7892 | arguments->push(arg); | |
7893 | if (token.value == endtok) | |
7894 | break; | |
7895 | check(TOKcomma); | |
7896 | } | |
7897 | check(endtok); | |
7898 | } | |
7899 | return arguments; | |
7900 | } | |
7901 | ||
7902 | /******************************************* | |
7903 | */ | |
7904 | ||
7905 | Expression *Parser::parseNewExp(Expression *thisexp) | |
7906 | { | |
7907 | Type *t; | |
7908 | Expressions *newargs; | |
7909 | Expressions *arguments = NULL; | |
7910 | Loc loc = token.loc; | |
7911 | ||
7912 | nextToken(); | |
7913 | newargs = NULL; | |
7914 | if (token.value == TOKlparen) | |
7915 | { | |
7916 | newargs = parseArguments(); | |
7917 | } | |
7918 | ||
7919 | // An anonymous nested class starts with "class" | |
7920 | if (token.value == TOKclass) | |
7921 | { | |
7922 | nextToken(); | |
7923 | if (token.value == TOKlparen) | |
7924 | arguments = parseArguments(); | |
7925 | ||
7926 | BaseClasses *baseclasses = NULL; | |
7927 | if (token.value != TOKlcurly) | |
7928 | baseclasses = parseBaseClasses(); | |
7929 | ||
7930 | Identifier *id = NULL; | |
7931 | Dsymbols *members = NULL; | |
7932 | ||
7933 | if (token.value != TOKlcurly) | |
7934 | { | |
7935 | error("{ members } expected for anonymous class"); | |
7936 | } | |
7937 | else | |
7938 | { | |
7939 | nextToken(); | |
7940 | members = parseDeclDefs(0); | |
7941 | if (token.value != TOKrcurly) | |
7942 | error("class member expected"); | |
7943 | nextToken(); | |
7944 | } | |
7945 | ||
7946 | ClassDeclaration *cd = new ClassDeclaration(loc, id, baseclasses, members, false); | |
7947 | Expression *e = new NewAnonClassExp(loc, thisexp, newargs, cd, arguments); | |
7948 | ||
7949 | return e; | |
7950 | } | |
7951 | ||
7952 | StorageClass stc = parseTypeCtor(); | |
7953 | t = parseBasicType(true); | |
7954 | t = parseBasicType2(t); | |
7955 | t = t->addSTC(stc); | |
7956 | if (t->ty == Taarray) | |
7957 | { | |
7958 | TypeAArray *taa = (TypeAArray *)t; | |
7959 | Type *index = taa->index; | |
7960 | ||
7961 | Expression *edim = typeToExpression(index); | |
7962 | if (!edim) | |
7963 | { | |
7964 | error("need size of rightmost array, not type %s", index->toChars()); | |
7965 | return new NullExp(loc); | |
7966 | } | |
7967 | t = new TypeSArray(taa->next, edim); | |
7968 | } | |
7969 | else if (t->ty == Tsarray) | |
7970 | { | |
7971 | } | |
7972 | else if (token.value == TOKlparen) | |
7973 | { | |
7974 | arguments = parseArguments(); | |
7975 | } | |
7976 | Expression *e = new NewExp(loc, thisexp, newargs, t, arguments); | |
7977 | return e; | |
7978 | } | |
7979 | ||
7980 | /********************************************** | |
7981 | */ | |
7982 | ||
7983 | void Parser::addComment(Dsymbol *s, const utf8_t *blockComment) | |
7984 | { | |
7985 | s->addComment(combineComments(blockComment, token.lineComment)); | |
7986 | token.lineComment = NULL; | |
7987 | } | |
7988 | ||
7989 | ||
7990 | /********************************** | |
7991 | * Set operator precedence for each operator. | |
7992 | */ | |
7993 | ||
7994 | PREC precedence[TOKMAX]; | |
7995 | ||
7996 | struct PrecedenceInitializer | |
7997 | { | |
7998 | PrecedenceInitializer(); | |
7999 | }; | |
8000 | ||
8001 | static PrecedenceInitializer precedenceinitializer; | |
8002 | ||
8003 | PrecedenceInitializer::PrecedenceInitializer() | |
8004 | { | |
8005 | for (size_t i = 0; i < TOKMAX; i++) | |
8006 | precedence[i] = PREC_zero; | |
8007 | ||
8008 | precedence[TOKtype] = PREC_expr; | |
8009 | precedence[TOKerror] = PREC_expr; | |
8010 | ||
8011 | precedence[TOKtypeof] = PREC_primary; | |
8012 | precedence[TOKmixin] = PREC_primary; | |
8013 | precedence[TOKimport] = PREC_primary; | |
8014 | ||
8015 | precedence[TOKdotvar] = PREC_primary; | |
8016 | precedence[TOKscope] = PREC_primary; | |
8017 | precedence[TOKidentifier] = PREC_primary; | |
8018 | precedence[TOKthis] = PREC_primary; | |
8019 | precedence[TOKsuper] = PREC_primary; | |
8020 | precedence[TOKint64] = PREC_primary; | |
8021 | precedence[TOKfloat64] = PREC_primary; | |
8022 | precedence[TOKcomplex80] = PREC_primary; | |
8023 | precedence[TOKnull] = PREC_primary; | |
8024 | precedence[TOKstring] = PREC_primary; | |
8025 | precedence[TOKarrayliteral] = PREC_primary; | |
8026 | precedence[TOKassocarrayliteral] = PREC_primary; | |
8027 | precedence[TOKclassreference] = PREC_primary; | |
8028 | precedence[TOKfile] = PREC_primary; | |
8029 | precedence[TOKfilefullpath] = PREC_primary; | |
8030 | precedence[TOKline] = PREC_primary; | |
8031 | precedence[TOKmodulestring] = PREC_primary; | |
8032 | precedence[TOKfuncstring] = PREC_primary; | |
8033 | precedence[TOKprettyfunc] = PREC_primary; | |
8034 | precedence[TOKtypeid] = PREC_primary; | |
8035 | precedence[TOKis] = PREC_primary; | |
8036 | precedence[TOKassert] = PREC_primary; | |
8037 | precedence[TOKhalt] = PREC_primary; | |
8038 | precedence[TOKtemplate] = PREC_primary; | |
8039 | precedence[TOKdsymbol] = PREC_primary; | |
8040 | precedence[TOKfunction] = PREC_primary; | |
8041 | precedence[TOKvar] = PREC_primary; | |
8042 | precedence[TOKsymoff] = PREC_primary; | |
8043 | precedence[TOKstructliteral] = PREC_primary; | |
8044 | precedence[TOKarraylength] = PREC_primary; | |
8045 | precedence[TOKdelegateptr] = PREC_primary; | |
8046 | precedence[TOKdelegatefuncptr] = PREC_primary; | |
8047 | precedence[TOKremove] = PREC_primary; | |
8048 | precedence[TOKtuple] = PREC_primary; | |
8049 | precedence[TOKtraits] = PREC_primary; | |
8050 | precedence[TOKdefault] = PREC_primary; | |
8051 | precedence[TOKoverloadset] = PREC_primary; | |
8052 | precedence[TOKvoid] = PREC_primary; | |
b9da0278 | 8053 | precedence[TOKvectorarray] = PREC_primary; |
b4c522fa IB |
8054 | |
8055 | // post | |
8056 | precedence[TOKdotti] = PREC_primary; | |
8057 | precedence[TOKdotid] = PREC_primary; | |
8058 | precedence[TOKdottd] = PREC_primary; | |
8059 | precedence[TOKdot] = PREC_primary; | |
8060 | precedence[TOKdottype] = PREC_primary; | |
8061 | // precedence[TOKarrow] = PREC_primary; | |
8062 | precedence[TOKplusplus] = PREC_primary; | |
8063 | precedence[TOKminusminus] = PREC_primary; | |
8064 | precedence[TOKpreplusplus] = PREC_primary; | |
8065 | precedence[TOKpreminusminus] = PREC_primary; | |
8066 | precedence[TOKcall] = PREC_primary; | |
8067 | precedence[TOKslice] = PREC_primary; | |
8068 | precedence[TOKarray] = PREC_primary; | |
8069 | precedence[TOKindex] = PREC_primary; | |
8070 | ||
8071 | precedence[TOKdelegate] = PREC_unary; | |
8072 | precedence[TOKaddress] = PREC_unary; | |
8073 | precedence[TOKstar] = PREC_unary; | |
8074 | precedence[TOKneg] = PREC_unary; | |
8075 | precedence[TOKuadd] = PREC_unary; | |
8076 | precedence[TOKnot] = PREC_unary; | |
8077 | precedence[TOKtilde] = PREC_unary; | |
8078 | precedence[TOKdelete] = PREC_unary; | |
8079 | precedence[TOKnew] = PREC_unary; | |
8080 | precedence[TOKnewanonclass] = PREC_unary; | |
8081 | precedence[TOKcast] = PREC_unary; | |
8082 | ||
8083 | precedence[TOKvector] = PREC_unary; | |
8084 | precedence[TOKpow] = PREC_pow; | |
8085 | ||
8086 | precedence[TOKmul] = PREC_mul; | |
8087 | precedence[TOKdiv] = PREC_mul; | |
8088 | precedence[TOKmod] = PREC_mul; | |
8089 | ||
8090 | precedence[TOKadd] = PREC_add; | |
8091 | precedence[TOKmin] = PREC_add; | |
8092 | precedence[TOKcat] = PREC_add; | |
8093 | ||
8094 | precedence[TOKshl] = PREC_shift; | |
8095 | precedence[TOKshr] = PREC_shift; | |
8096 | precedence[TOKushr] = PREC_shift; | |
8097 | ||
8098 | precedence[TOKlt] = PREC_rel; | |
8099 | precedence[TOKle] = PREC_rel; | |
8100 | precedence[TOKgt] = PREC_rel; | |
8101 | precedence[TOKge] = PREC_rel; | |
8102 | precedence[TOKunord] = PREC_rel; | |
8103 | precedence[TOKlg] = PREC_rel; | |
8104 | precedence[TOKleg] = PREC_rel; | |
8105 | precedence[TOKule] = PREC_rel; | |
8106 | precedence[TOKul] = PREC_rel; | |
8107 | precedence[TOKuge] = PREC_rel; | |
8108 | precedence[TOKug] = PREC_rel; | |
8109 | precedence[TOKue] = PREC_rel; | |
8110 | precedence[TOKin] = PREC_rel; | |
8111 | ||
8112 | /* Note that we changed precedence, so that < and != have the same | |
8113 | * precedence. This change is in the parser, too. | |
8114 | */ | |
8115 | precedence[TOKequal] = PREC_rel; | |
8116 | precedence[TOKnotequal] = PREC_rel; | |
8117 | precedence[TOKidentity] = PREC_rel; | |
8118 | precedence[TOKnotidentity] = PREC_rel; | |
8119 | ||
8120 | precedence[TOKand] = PREC_and; | |
8121 | ||
8122 | precedence[TOKxor] = PREC_xor; | |
8123 | ||
8124 | precedence[TOKor] = PREC_or; | |
8125 | ||
8126 | precedence[TOKandand] = PREC_andand; | |
8127 | ||
8128 | precedence[TOKoror] = PREC_oror; | |
8129 | ||
8130 | precedence[TOKquestion] = PREC_cond; | |
8131 | ||
8132 | precedence[TOKassign] = PREC_assign; | |
8133 | precedence[TOKconstruct] = PREC_assign; | |
8134 | precedence[TOKblit] = PREC_assign; | |
8135 | precedence[TOKaddass] = PREC_assign; | |
8136 | precedence[TOKminass] = PREC_assign; | |
8137 | precedence[TOKcatass] = PREC_assign; | |
8138 | precedence[TOKmulass] = PREC_assign; | |
8139 | precedence[TOKdivass] = PREC_assign; | |
8140 | precedence[TOKmodass] = PREC_assign; | |
8141 | precedence[TOKpowass] = PREC_assign; | |
8142 | precedence[TOKshlass] = PREC_assign; | |
8143 | precedence[TOKshrass] = PREC_assign; | |
8144 | precedence[TOKushrass] = PREC_assign; | |
8145 | precedence[TOKandass] = PREC_assign; | |
8146 | precedence[TOKorass] = PREC_assign; | |
8147 | precedence[TOKxorass] = PREC_assign; | |
8148 | ||
8149 | precedence[TOKcomma] = PREC_expr; | |
8150 | precedence[TOKdeclaration] = PREC_expr; | |
8151 | ||
8152 | precedence[TOKinterval] = PREC_assign; | |
8153 | } |