Mercurial > projects > ldc
annotate dmd/parse.c @ 92:70d6113eeb8c trunk
[svn r96] Updated to DMD 1.023.
Regular bugfixes.
| author | lindquist |
|---|---|
| date | Thu, 08 Nov 2007 19:13:28 +0100 |
| parents | 3cfcb944304e |
| children | 0ab29b838084 |
| rev | line source |
|---|---|
| 1 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 3 // Copyright (c) 1999-2007 by Digital Mars | |
| 4 // All Rights Reserved | |
| 5 // written by Walter Bright | |
| 6 // http://www.digitalmars.com | |
| 7 // License for redistribution is by either the Artistic License | |
| 8 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
| 9 // See the included readme.txt for details. | |
| 10 | |
| 11 #include <stdio.h> | |
| 12 #include <assert.h> | |
| 13 | |
| 14 #include "mem.h" | |
| 15 #include "lexer.h" | |
| 16 #include "parse.h" | |
| 17 #include "init.h" | |
| 18 #include "attrib.h" | |
| 19 #include "cond.h" | |
| 20 #include "mtype.h" | |
| 21 #include "template.h" | |
| 22 #include "staticassert.h" | |
| 23 #include "expression.h" | |
| 24 #include "statement.h" | |
| 25 #include "module.h" | |
| 26 #include "dsymbol.h" | |
| 27 #include "import.h" | |
| 28 #include "declaration.h" | |
| 29 #include "aggregate.h" | |
| 30 #include "enum.h" | |
| 31 #include "id.h" | |
| 32 #include "version.h" | |
| 33 | |
| 34 // How multiple declarations are parsed. | |
| 35 // If 1, treat as C. | |
| 36 // If 0, treat: | |
| 37 // int *p, i; | |
| 38 // as: | |
| 39 // int* p; | |
| 40 // int* i; | |
| 41 #define CDECLSYNTAX 0 | |
| 42 | |
| 43 // Support C cast syntax: | |
| 44 // (type)(expression) | |
| 45 #define CCASTSYNTAX 1 | |
| 46 | |
| 47 // Support C array declarations, such as | |
| 48 // int a[3][4]; | |
| 49 #define CARRAYDECL 1 | |
| 50 | |
| 51 // Support left-to-right array declarations | |
| 52 #define LTORARRAYDECL 1 | |
| 53 | |
| 54 | |
| 55 Parser::Parser(Module *module, unsigned char *base, unsigned length, int doDocComment) | |
| 56 : Lexer(module, base, 0, length, doDocComment, 0) | |
| 57 { | |
| 58 //printf("Parser::Parser()\n"); | |
| 59 md = NULL; | |
| 60 linkage = LINKd; | |
| 61 endloc = 0; | |
| 62 inBrackets = 0; | |
| 63 //nextToken(); // start up the scanner | |
| 64 } | |
| 65 | |
| 66 Array *Parser::parseModule() | |
| 67 { | |
| 68 Array *decldefs; | |
| 69 | |
| 70 // ModuleDeclation leads off | |
| 71 if (token.value == TOKmodule) | |
| 72 { | |
| 73 unsigned char *comment = token.blockComment; | |
| 74 | |
| 75 nextToken(); | |
| 76 if (token.value != TOKidentifier) | |
| 77 { error("Identifier expected following module"); | |
| 78 goto Lerr; | |
| 79 } | |
| 80 else | |
| 81 { | |
| 82 Array *a = NULL; | |
| 83 Identifier *id; | |
| 84 | |
| 85 id = token.ident; | |
| 86 while (nextToken() == TOKdot) | |
| 87 { | |
| 88 if (!a) | |
| 89 a = new Array(); | |
| 90 a->push(id); | |
| 91 nextToken(); | |
| 92 if (token.value != TOKidentifier) | |
| 93 { error("Identifier expected following package"); | |
| 94 goto Lerr; | |
| 95 } | |
| 96 id = token.ident; | |
| 97 } | |
| 98 | |
| 99 md = new ModuleDeclaration(a, id); | |
| 100 | |
| 101 if (token.value != TOKsemicolon) | |
| 102 error("';' expected following module declaration instead of %s", token.toChars()); | |
| 103 nextToken(); | |
| 104 addComment(mod, comment); | |
| 105 } | |
| 106 } | |
| 107 | |
| 108 decldefs = parseDeclDefs(0); | |
| 109 if (token.value != TOKeof) | |
| 110 { error("unrecognized declaration"); | |
| 111 goto Lerr; | |
| 112 } | |
| 113 return decldefs; | |
| 114 | |
| 115 Lerr: | |
| 116 while (token.value != TOKsemicolon && token.value != TOKeof) | |
| 117 nextToken(); | |
| 118 nextToken(); | |
| 119 return new Array(); | |
| 120 } | |
| 121 | |
| 122 Array *Parser::parseDeclDefs(int once) | |
| 123 { Dsymbol *s; | |
| 124 Array *decldefs; | |
| 125 Array *a; | |
| 126 Array *aelse; | |
| 127 enum PROT prot; | |
| 128 unsigned stc; | |
| 129 Condition *condition; | |
| 130 unsigned char *comment; | |
| 131 | |
| 132 //printf("Parser::parseDeclDefs()\n"); | |
| 133 decldefs = new Array(); | |
| 134 do | |
| 135 { | |
| 136 comment = token.blockComment; | |
| 137 switch (token.value) | |
| 138 { | |
| 139 case TOKenum: | |
| 140 s = parseEnum(); | |
| 141 break; | |
| 142 | |
| 143 case TOKstruct: | |
| 144 case TOKunion: | |
| 145 case TOKclass: | |
| 146 case TOKinterface: | |
| 147 s = parseAggregate(); | |
| 148 break; | |
| 149 | |
| 150 case TOKimport: | |
| 151 s = parseImport(decldefs, 0); | |
| 152 break; | |
| 153 | |
| 154 case TOKtemplate: | |
| 155 s = (Dsymbol *)parseTemplateDeclaration(); | |
| 156 break; | |
| 157 | |
| 158 case TOKmixin: | |
| 159 { Loc loc = this->loc; | |
| 160 if (peek(&token)->value == TOKlparen) | |
| 161 { // mixin(string) | |
| 162 nextToken(); | |
| 163 check(TOKlparen, "mixin"); | |
| 164 Expression *e = parseAssignExp(); | |
| 165 check(TOKrparen); | |
| 166 check(TOKsemicolon); | |
| 167 s = new CompileDeclaration(loc, e); | |
| 168 break; | |
| 169 } | |
| 170 s = parseMixin(); | |
| 171 break; | |
| 172 } | |
| 173 | |
| 174 CASE_BASIC_TYPES: | |
| 175 case TOKalias: | |
| 176 case TOKtypedef: | |
| 177 case TOKidentifier: | |
| 178 case TOKtypeof: | |
| 179 case TOKdot: | |
| 180 Ldeclaration: | |
| 181 a = parseDeclarations(); | |
| 182 decldefs->append(a); | |
| 183 continue; | |
| 184 | |
| 185 case TOKthis: | |
| 186 s = parseCtor(); | |
| 187 break; | |
| 188 | |
| 189 case TOKtilde: | |
| 190 s = parseDtor(); | |
| 191 break; | |
| 192 | |
| 193 case TOKinvariant: | |
| 194 #if 1 | |
| 195 s = parseInvariant(); | |
| 196 #else | |
| 197 if (peek(&token)->value == TOKlcurly) | |
| 198 s = parseInvariant(); | |
| 199 else | |
| 200 { | |
| 201 stc = STCinvariant; | |
| 202 goto Lstc; | |
| 203 } | |
| 204 #endif | |
| 205 break; | |
| 206 | |
| 207 case TOKunittest: | |
| 208 s = parseUnitTest(); | |
| 209 break; | |
| 210 | |
| 211 case TOKnew: | |
| 212 s = parseNew(); | |
| 213 break; | |
| 214 | |
| 215 case TOKdelete: | |
| 216 s = parseDelete(); | |
| 217 break; | |
| 218 | |
| 219 case TOKeof: | |
| 220 case TOKrcurly: | |
| 221 return decldefs; | |
| 222 | |
| 223 case TOKstatic: | |
| 224 nextToken(); | |
| 225 if (token.value == TOKthis) | |
| 226 s = parseStaticCtor(); | |
| 227 else if (token.value == TOKtilde) | |
| 228 s = parseStaticDtor(); | |
| 229 else if (token.value == TOKassert) | |
| 230 s = parseStaticAssert(); | |
| 231 else if (token.value == TOKif) | |
| 232 { condition = parseStaticIfCondition(); | |
| 233 a = parseBlock(); | |
| 234 aelse = NULL; | |
| 235 if (token.value == TOKelse) | |
| 236 { nextToken(); | |
| 237 aelse = parseBlock(); | |
| 238 } | |
| 239 s = new StaticIfDeclaration(condition, a, aelse); | |
| 240 break; | |
| 241 } | |
| 242 else if (token.value == TOKimport) | |
| 243 { | |
| 244 s = parseImport(decldefs, 1); | |
| 245 } | |
| 246 else | |
| 247 { stc = STCstatic; | |
| 248 goto Lstc2; | |
| 249 } | |
| 250 break; | |
| 251 | |
| 252 case TOKconst: stc = STCconst; goto Lstc; | |
| 253 case TOKfinal: stc = STCfinal; goto Lstc; | |
| 254 case TOKauto: stc = STCauto; goto Lstc; | |
| 255 case TOKscope: stc = STCscope; goto Lstc; | |
| 256 case TOKoverride: stc = STCoverride; goto Lstc; | |
| 257 case TOKabstract: stc = STCabstract; goto Lstc; | |
| 258 case TOKsynchronized: stc = STCsynchronized; goto Lstc; | |
| 259 case TOKdeprecated: stc = STCdeprecated; goto Lstc; | |
| 260 | |
| 261 Lstc: | |
| 262 nextToken(); | |
| 263 Lstc2: | |
| 264 switch (token.value) | |
| 265 { | |
| 266 case TOKconst: stc |= STCconst; goto Lstc; | |
| 267 case TOKfinal: stc |= STCfinal; goto Lstc; | |
| 268 case TOKauto: stc |= STCauto; goto Lstc; | |
| 269 case TOKscope: stc |= STCscope; goto Lstc; | |
| 270 case TOKoverride: stc |= STCoverride; goto Lstc; | |
| 271 case TOKabstract: stc |= STCabstract; goto Lstc; | |
| 272 case TOKsynchronized: stc |= STCsynchronized; goto Lstc; | |
| 273 case TOKdeprecated: stc |= STCdeprecated; goto Lstc; | |
| 274 //case TOKinvariant: stc |= STCinvariant; goto Lstc; | |
| 275 default: | |
| 276 break; | |
| 277 } | |
| 278 | |
| 279 /* Look for auto initializers: | |
| 280 * storage_class identifier = initializer; | |
| 281 */ | |
| 282 if (token.value == TOKidentifier && | |
| 283 peek(&token)->value == TOKassign) | |
| 284 { | |
| 285 while (1) | |
| 286 { | |
| 287 Identifier *ident = token.ident; | |
| 288 nextToken(); | |
| 289 nextToken(); | |
| 290 Initializer *init = parseInitializer(); | |
| 291 VarDeclaration *v = new VarDeclaration(loc, NULL, ident, init); | |
| 292 v->storage_class = stc; | |
| 293 s = v; | |
| 294 if (token.value == TOKsemicolon) | |
| 295 { | |
| 296 nextToken(); | |
| 297 } | |
| 298 else if (token.value == TOKcomma) | |
| 299 { | |
| 300 nextToken(); | |
| 301 if (token.value == TOKidentifier && | |
| 302 peek(&token)->value == TOKassign) | |
| 303 { | |
| 304 decldefs->push(s); | |
| 305 addComment(s, comment); | |
| 306 continue; | |
| 307 } | |
| 308 else | |
| 309 error("Identifier expected following comma"); | |
| 310 } | |
| 311 else | |
| 312 error("semicolon expected following auto declaration, not '%s'", token.toChars()); | |
| 313 break; | |
| 314 } | |
| 315 } | |
| 316 else | |
| 317 { a = parseBlock(); | |
| 318 s = new StorageClassDeclaration(stc, a); | |
| 319 } | |
| 320 break; | |
| 321 | |
| 322 case TOKextern: | |
| 323 if (peek(&token)->value != TOKlparen) | |
| 324 { stc = STCextern; | |
| 325 goto Lstc; | |
| 326 } | |
| 327 { | |
| 328 enum LINK linksave = linkage; | |
| 329 linkage = parseLinkage(); | |
| 330 a = parseBlock(); | |
| 331 s = new LinkDeclaration(linkage, a); | |
| 332 linkage = linksave; | |
| 333 break; | |
| 334 } | |
| 335 case TOKprivate: prot = PROTprivate; goto Lprot; | |
| 336 case TOKpackage: prot = PROTpackage; goto Lprot; | |
| 337 case TOKprotected: prot = PROTprotected; goto Lprot; | |
| 338 case TOKpublic: prot = PROTpublic; goto Lprot; | |
| 339 case TOKexport: prot = PROTexport; goto Lprot; | |
| 340 | |
| 341 Lprot: | |
| 342 nextToken(); | |
| 343 a = parseBlock(); | |
| 344 s = new ProtDeclaration(prot, a); | |
| 345 break; | |
| 346 | |
| 347 case TOKalign: | |
| 348 { unsigned n; | |
| 349 | |
| 350 s = NULL; | |
| 351 nextToken(); | |
| 352 if (token.value == TOKlparen) | |
| 353 { | |
| 354 nextToken(); | |
| 355 if (token.value == TOKint32v) | |
| 356 n = (unsigned)token.uns64value; | |
| 357 else | |
| 358 { error("integer expected, not %s", token.toChars()); | |
| 359 n = 1; | |
| 360 } | |
| 361 nextToken(); | |
| 362 check(TOKrparen); | |
| 363 } | |
| 364 else | |
| 365 n = global.structalign; // default | |
| 366 | |
| 367 a = parseBlock(); | |
| 368 s = new AlignDeclaration(n, a); | |
| 369 break; | |
| 370 } | |
| 371 | |
| 372 case TOKpragma: | |
| 373 { Identifier *ident; | |
| 374 Expressions *args = NULL; | |
| 375 | |
| 376 nextToken(); | |
| 377 check(TOKlparen); | |
| 378 if (token.value != TOKidentifier) | |
| 379 { error("pragma(identifier expected"); | |
| 380 goto Lerror; | |
| 381 } | |
| 382 ident = token.ident; | |
| 383 nextToken(); | |
| 384 if (token.value == TOKcomma) | |
| 385 args = parseArguments(); // pragma(identifier, args...) | |
| 386 else | |
| 387 check(TOKrparen); // pragma(identifier) | |
| 388 | |
| 389 if (token.value == TOKsemicolon) | |
| 390 a = NULL; | |
| 391 else | |
| 392 a = parseBlock(); | |
| 393 s = new PragmaDeclaration(loc, ident, args, a); | |
| 394 break; | |
| 395 } | |
| 396 | |
| 397 case TOKdebug: | |
| 398 nextToken(); | |
| 399 if (token.value == TOKassign) | |
| 400 { | |
| 401 nextToken(); | |
| 402 if (token.value == TOKidentifier) | |
| 403 s = new DebugSymbol(loc, token.ident); | |
| 404 else if (token.value == TOKint32v) | |
| 405 s = new DebugSymbol(loc, (unsigned)token.uns64value); | |
| 406 else | |
| 407 { error("identifier or integer expected, not %s", token.toChars()); | |
| 408 s = NULL; | |
| 409 } | |
| 410 nextToken(); | |
| 411 if (token.value != TOKsemicolon) | |
| 412 error("semicolon expected"); | |
| 413 nextToken(); | |
| 414 break; | |
| 415 } | |
| 416 | |
| 417 condition = parseDebugCondition(); | |
| 418 goto Lcondition; | |
| 419 | |
| 420 case TOKversion: | |
| 421 nextToken(); | |
| 422 if (token.value == TOKassign) | |
| 423 { | |
| 424 nextToken(); | |
| 425 if (token.value == TOKidentifier) | |
| 426 s = new VersionSymbol(loc, token.ident); | |
| 427 else if (token.value == TOKint32v) | |
| 428 s = new VersionSymbol(loc, (unsigned)token.uns64value); | |
| 429 else | |
| 430 { error("identifier or integer expected, not %s", token.toChars()); | |
| 431 s = NULL; | |
| 432 } | |
| 433 nextToken(); | |
| 434 if (token.value != TOKsemicolon) | |
| 435 error("semicolon expected"); | |
| 436 nextToken(); | |
| 437 break; | |
| 438 } | |
| 439 condition = parseVersionCondition(); | |
| 440 goto Lcondition; | |
| 441 | |
| 442 Lcondition: | |
| 443 a = parseBlock(); | |
| 444 aelse = NULL; | |
| 445 if (token.value == TOKelse) | |
| 446 { nextToken(); | |
| 447 aelse = parseBlock(); | |
| 448 } | |
| 449 s = new ConditionalDeclaration(condition, a, aelse); | |
| 450 break; | |
| 451 | |
| 452 case TOKsemicolon: // empty declaration | |
| 453 nextToken(); | |
| 454 continue; | |
| 455 | |
| 456 default: | |
| 457 error("Declaration expected, not '%s'",token.toChars()); | |
| 458 Lerror: | |
| 459 while (token.value != TOKsemicolon && token.value != TOKeof) | |
| 460 nextToken(); | |
| 461 nextToken(); | |
| 462 s = NULL; | |
| 463 continue; | |
| 464 } | |
| 465 if (s) | |
| 466 { decldefs->push(s); | |
| 467 addComment(s, comment); | |
| 468 } | |
| 469 } while (!once); | |
| 470 return decldefs; | |
| 471 } | |
| 472 | |
| 473 | |
| 474 /******************************************** | |
| 475 * Parse declarations after an align, protection, or extern decl. | |
| 476 */ | |
| 477 | |
| 478 Array *Parser::parseBlock() | |
| 479 { | |
| 480 Array *a = NULL; | |
| 481 Dsymbol *s; | |
| 482 | |
| 483 //printf("parseBlock()\n"); | |
| 484 switch (token.value) | |
| 485 { | |
| 486 case TOKsemicolon: | |
| 487 error("declaration expected following attribute, not ';'"); | |
| 488 nextToken(); | |
| 489 break; | |
| 490 | |
| 491 case TOKlcurly: | |
| 492 nextToken(); | |
| 493 a = parseDeclDefs(0); | |
| 494 if (token.value != TOKrcurly) | |
| 495 { /* { */ | |
| 496 error("matching '}' expected, not %s", token.toChars()); | |
| 497 } | |
| 498 else | |
| 499 nextToken(); | |
| 500 break; | |
| 501 | |
| 502 case TOKcolon: | |
| 503 nextToken(); | |
| 504 #if 0 | |
| 505 a = NULL; | |
| 506 #else | |
| 507 a = parseDeclDefs(0); // grab declarations up to closing curly bracket | |
| 508 #endif | |
| 509 break; | |
| 510 | |
| 511 default: | |
| 512 a = parseDeclDefs(1); | |
| 513 break; | |
| 514 } | |
| 515 return a; | |
| 516 } | |
| 517 | |
| 518 /********************************** | |
| 519 * Parse a static assertion. | |
| 520 */ | |
| 521 | |
| 522 StaticAssert *Parser::parseStaticAssert() | |
| 523 { | |
| 524 Loc loc = this->loc; | |
| 525 Expression *exp; | |
| 526 Expression *msg = NULL; | |
| 527 | |
| 528 //printf("parseStaticAssert()\n"); | |
| 529 nextToken(); | |
| 530 check(TOKlparen); | |
| 531 exp = parseAssignExp(); | |
| 532 if (token.value == TOKcomma) | |
| 533 { nextToken(); | |
| 534 msg = parseAssignExp(); | |
| 535 } | |
| 536 check(TOKrparen); | |
| 537 check(TOKsemicolon); | |
| 538 return new StaticAssert(loc, exp, msg); | |
| 539 } | |
| 540 | |
| 541 | |
| 542 /*********************************** | |
| 543 * Parse extern (linkage) | |
| 544 * The parser is on the 'extern' token. | |
| 545 */ | |
| 546 | |
| 547 enum LINK Parser::parseLinkage() | |
| 548 { | |
| 549 enum LINK link = LINKdefault; | |
| 550 nextToken(); | |
| 551 assert(token.value == TOKlparen); | |
| 552 nextToken(); | |
| 553 if (token.value == TOKidentifier) | |
| 554 { Identifier *id = token.ident; | |
| 555 | |
| 556 nextToken(); | |
| 557 if (id == Id::Windows) | |
| 558 link = LINKwindows; | |
| 559 else if (id == Id::Pascal) | |
| 560 link = LINKpascal; | |
| 561 else if (id == Id::D) | |
| 562 link = LINKd; | |
| 563 else if (id == Id::C) | |
| 564 { | |
| 565 link = LINKc; | |
| 566 if (token.value == TOKplusplus) | |
| 567 { link = LINKcpp; | |
| 568 nextToken(); | |
| 569 } | |
| 570 } | |
| 571 else if (id == Id::System) | |
| 572 { | |
| 573 #if _WIN32 | |
| 574 link = LINKwindows; | |
| 575 #else | |
| 576 link = LINKc; | |
| 577 #endif | |
| 578 } | |
| 579 else | |
| 580 { | |
| 581 error("valid linkage identifiers are D, C, C++, Pascal, Windows, System"); | |
| 582 link = LINKd; | |
| 583 } | |
| 584 } | |
| 585 else | |
| 586 { | |
| 587 link = LINKd; // default | |
| 588 } | |
| 589 check(TOKrparen); | |
| 590 return link; | |
| 591 } | |
| 592 | |
| 593 /************************************** | |
| 594 * Parse a debug conditional | |
| 595 */ | |
| 596 | |
| 597 Condition *Parser::parseDebugCondition() | |
| 598 { | |
| 599 Condition *c; | |
| 600 | |
| 601 if (token.value == TOKlparen) | |
| 602 { | |
| 603 nextToken(); | |
| 604 unsigned level = 1; | |
| 605 Identifier *id = NULL; | |
| 606 | |
| 607 if (token.value == TOKidentifier) | |
| 608 id = token.ident; | |
| 609 else if (token.value == TOKint32v) | |
| 610 level = (unsigned)token.uns64value; | |
| 611 else | |
| 612 error("identifier or integer expected, not %s", token.toChars()); | |
| 613 nextToken(); | |
| 614 check(TOKrparen); | |
| 615 c = new DebugCondition(mod, level, id); | |
| 616 } | |
| 617 else | |
| 618 c = new DebugCondition(mod, 1, NULL); | |
| 619 return c; | |
| 620 | |
| 621 } | |
| 622 | |
| 623 /************************************** | |
| 624 * Parse a version conditional | |
| 625 */ | |
| 626 | |
| 627 Condition *Parser::parseVersionCondition() | |
| 628 { | |
| 629 Condition *c; | |
| 630 unsigned level = 1; | |
| 631 Identifier *id = NULL; | |
| 632 | |
| 633 if (token.value == TOKlparen) | |
| 634 { | |
| 635 nextToken(); | |
| 636 if (token.value == TOKidentifier) | |
| 637 id = token.ident; | |
| 638 else if (token.value == TOKint32v) | |
| 639 level = (unsigned)token.uns64value; | |
| 640 else | |
| 641 error("identifier or integer expected, not %s", token.toChars()); | |
| 642 nextToken(); | |
| 643 check(TOKrparen); | |
| 644 | |
| 645 } | |
| 646 else | |
| 647 error("(condition) expected following version"); | |
| 648 c = new VersionCondition(mod, level, id); | |
| 649 return c; | |
| 650 | |
| 651 } | |
| 652 | |
| 653 /*********************************************** | |
| 654 * static if (expression) | |
| 655 * body | |
| 656 * else | |
| 657 * body | |
| 658 */ | |
| 659 | |
| 660 Condition *Parser::parseStaticIfCondition() | |
| 661 { Expression *exp; | |
| 662 Condition *condition; | |
| 663 Array *aif; | |
| 664 Array *aelse; | |
| 665 Loc loc = this->loc; | |
| 666 | |
| 667 nextToken(); | |
| 668 if (token.value == TOKlparen) | |
| 669 { | |
| 670 nextToken(); | |
| 671 exp = parseAssignExp(); | |
| 672 check(TOKrparen); | |
| 673 } | |
| 674 else | |
| 675 { error("(expression) expected following static if"); | |
| 676 exp = NULL; | |
| 677 } | |
| 678 condition = new StaticIfCondition(loc, exp); | |
| 679 return condition; | |
| 680 } | |
| 681 | |
| 682 | |
| 683 /***************************************** | |
| 684 * Parse a constructor definition: | |
| 685 * this(arguments) { body } | |
| 686 * Current token is 'this'. | |
| 687 */ | |
| 688 | |
| 689 CtorDeclaration *Parser::parseCtor() | |
| 690 { | |
| 691 CtorDeclaration *f; | |
| 692 Arguments *arguments; | |
| 693 int varargs; | |
| 694 Loc loc = this->loc; | |
| 695 | |
| 696 nextToken(); | |
| 697 arguments = parseParameters(&varargs); | |
| 698 f = new CtorDeclaration(loc, 0, arguments, varargs); | |
| 699 parseContracts(f); | |
| 700 return f; | |
| 701 } | |
| 702 | |
| 703 /***************************************** | |
| 704 * Parse a destructor definition: | |
| 705 * ~this() { body } | |
| 706 * Current token is '~'. | |
| 707 */ | |
| 708 | |
| 709 DtorDeclaration *Parser::parseDtor() | |
| 710 { | |
| 711 DtorDeclaration *f; | |
| 712 Loc loc = this->loc; | |
| 713 | |
| 714 nextToken(); | |
| 715 check(TOKthis); | |
| 716 check(TOKlparen); | |
| 717 check(TOKrparen); | |
| 718 | |
| 719 f = new DtorDeclaration(loc, 0); | |
| 720 parseContracts(f); | |
| 721 return f; | |
| 722 } | |
| 723 | |
| 724 /***************************************** | |
| 725 * Parse a static constructor definition: | |
| 726 * static this() { body } | |
| 727 * Current token is 'this'. | |
| 728 */ | |
| 729 | |
| 730 StaticCtorDeclaration *Parser::parseStaticCtor() | |
| 731 { | |
| 732 StaticCtorDeclaration *f; | |
| 733 Loc loc = this->loc; | |
| 734 | |
| 735 nextToken(); | |
| 736 check(TOKlparen); | |
| 737 check(TOKrparen); | |
| 738 | |
| 739 f = new StaticCtorDeclaration(loc, 0); | |
| 740 parseContracts(f); | |
| 741 return f; | |
| 742 } | |
| 743 | |
| 744 /***************************************** | |
| 745 * Parse a static destructor definition: | |
| 746 * static ~this() { body } | |
| 747 * Current token is '~'. | |
| 748 */ | |
| 749 | |
| 750 StaticDtorDeclaration *Parser::parseStaticDtor() | |
| 751 { | |
| 752 StaticDtorDeclaration *f; | |
| 753 Loc loc = this->loc; | |
| 754 | |
| 755 nextToken(); | |
| 756 check(TOKthis); | |
| 757 check(TOKlparen); | |
| 758 check(TOKrparen); | |
| 759 | |
| 760 f = new StaticDtorDeclaration(loc, 0); | |
| 761 parseContracts(f); | |
| 762 return f; | |
| 763 } | |
| 764 | |
| 765 /***************************************** | |
| 766 * Parse an invariant definition: | |
| 767 * invariant { body } | |
| 768 * Current token is 'invariant'. | |
| 769 */ | |
| 770 | |
| 771 InvariantDeclaration *Parser::parseInvariant() | |
| 772 { | |
| 773 InvariantDeclaration *f; | |
| 774 Loc loc = this->loc; | |
| 775 | |
| 776 nextToken(); | |
| 777 if (token.value == TOKlparen) // optional () | |
| 778 { | |
| 779 nextToken(); | |
| 780 check(TOKrparen); | |
| 781 } | |
| 782 | |
| 783 f = new InvariantDeclaration(loc, 0); | |
| 784 f->fbody = parseStatement(PScurly); | |
| 785 return f; | |
| 786 } | |
| 787 | |
| 788 /***************************************** | |
| 789 * Parse a unittest definition: | |
| 790 * unittest { body } | |
| 791 * Current token is 'unittest'. | |
| 792 */ | |
| 793 | |
| 794 UnitTestDeclaration *Parser::parseUnitTest() | |
| 795 { | |
| 796 UnitTestDeclaration *f; | |
| 797 Statement *body; | |
| 798 Loc loc = this->loc; | |
| 799 | |
| 800 nextToken(); | |
| 801 | |
| 802 body = parseStatement(PScurly); | |
| 803 | |
| 804 f = new UnitTestDeclaration(loc, this->loc); | |
| 805 f->fbody = body; | |
| 806 return f; | |
| 807 } | |
| 808 | |
| 809 /***************************************** | |
| 810 * Parse a new definition: | |
| 811 * new(arguments) { body } | |
| 812 * Current token is 'new'. | |
| 813 */ | |
| 814 | |
| 815 NewDeclaration *Parser::parseNew() | |
| 816 { | |
| 817 NewDeclaration *f; | |
| 818 Arguments *arguments; | |
| 819 int varargs; | |
| 820 Loc loc = this->loc; | |
| 821 | |
| 822 nextToken(); | |
| 823 arguments = parseParameters(&varargs); | |
| 824 f = new NewDeclaration(loc, 0, arguments, varargs); | |
| 825 parseContracts(f); | |
| 826 return f; | |
| 827 } | |
| 828 | |
| 829 /***************************************** | |
| 830 * Parse a delete definition: | |
| 831 * delete(arguments) { body } | |
| 832 * Current token is 'delete'. | |
| 833 */ | |
| 834 | |
| 835 DeleteDeclaration *Parser::parseDelete() | |
| 836 { | |
| 837 DeleteDeclaration *f; | |
| 838 Arguments *arguments; | |
| 839 int varargs; | |
| 840 Loc loc = this->loc; | |
| 841 | |
| 842 nextToken(); | |
| 843 arguments = parseParameters(&varargs); | |
| 844 if (varargs) | |
| 845 error("... not allowed in delete function parameter list"); | |
| 846 f = new DeleteDeclaration(loc, 0, arguments); | |
| 847 parseContracts(f); | |
| 848 return f; | |
| 849 } | |
| 850 | |
| 851 /********************************************** | |
| 852 * Parse parameter list. | |
| 853 */ | |
| 854 | |
| 855 Arguments *Parser::parseParameters(int *pvarargs) | |
| 856 { | |
| 857 Arguments *arguments = new Arguments(); | |
| 858 int varargs = 0; | |
| 859 int hasdefault = 0; | |
| 860 | |
| 861 check(TOKlparen); | |
| 862 while (1) | |
| 863 { Type *tb; | |
| 864 Identifier *ai; | |
| 865 Type *at; | |
| 866 Argument *a; | |
| 867 unsigned storageClass; | |
| 868 Expression *ae; | |
| 869 | |
| 870 ai = NULL; | |
| 871 storageClass = STCin; // parameter is "in" by default | |
| 872 switch (token.value) | |
| 873 { | |
| 874 case TOKrparen: | |
| 875 break; | |
| 876 | |
| 877 case TOKdotdotdot: | |
| 878 varargs = 1; | |
| 879 nextToken(); | |
| 880 break; | |
| 881 | |
| 882 case TOKin: | |
| 883 storageClass = STCin; | |
| 884 nextToken(); | |
| 885 goto L1; | |
| 886 | |
| 887 case TOKout: | |
| 888 storageClass = STCout; | |
| 889 nextToken(); | |
| 890 goto L1; | |
| 891 | |
| 892 case TOKinout: | |
| 893 case TOKref: | |
| 894 storageClass = STCref; | |
| 895 nextToken(); | |
| 896 goto L1; | |
| 897 | |
| 898 case TOKlazy: | |
| 899 storageClass = STClazy; | |
| 900 nextToken(); | |
| 901 goto L1; | |
| 902 | |
| 903 default: | |
| 904 L1: | |
| 905 tb = parseBasicType(); | |
| 906 at = parseDeclarator(tb, &ai); | |
| 907 ae = NULL; | |
| 908 if (token.value == TOKassign) // = defaultArg | |
| 909 { nextToken(); | |
| 910 ae = parseAssignExp(); | |
| 911 hasdefault = 1; | |
| 912 } | |
| 913 else | |
| 914 { if (hasdefault) | |
| 915 error("default argument expected for %s", | |
| 916 ai ? ai->toChars() : at->toChars()); | |
| 917 } | |
| 918 if (token.value == TOKdotdotdot) | |
| 919 { /* This is: | |
| 920 * at ai ... | |
| 921 */ | |
| 922 | |
| 923 if (storageClass & (STCout | STCref)) | |
| 924 error("variadic argument cannot be out or ref"); | |
| 925 varargs = 2; | |
| 926 a = new Argument(storageClass, at, ai, ae); | |
| 927 arguments->push(a); | |
| 928 nextToken(); | |
| 929 break; | |
| 930 } | |
| 931 a = new Argument(storageClass, at, ai, ae); | |
| 932 arguments->push(a); | |
| 933 if (token.value == TOKcomma) | |
| 934 { nextToken(); | |
| 935 continue; | |
| 936 } | |
| 937 break; | |
| 938 } | |
| 939 break; | |
| 940 } | |
| 941 check(TOKrparen); | |
| 942 *pvarargs = varargs; | |
| 943 return arguments; | |
| 944 } | |
| 945 | |
| 946 | |
| 947 /************************************* | |
| 948 */ | |
| 949 | |
| 950 EnumDeclaration *Parser::parseEnum() | |
| 951 { EnumDeclaration *e; | |
| 952 Identifier *id; | |
| 953 Type *t; | |
| 954 Loc loc = this->loc; | |
| 955 | |
| 956 //printf("Parser::parseEnum()\n"); | |
| 957 nextToken(); | |
| 958 if (token.value == TOKidentifier) | |
| 959 { id = token.ident; | |
| 960 nextToken(); | |
| 961 } | |
| 962 else | |
| 963 id = NULL; | |
| 964 | |
| 965 if (token.value == TOKcolon) | |
| 966 { | |
| 967 nextToken(); | |
| 968 t = parseBasicType(); | |
| 969 } | |
| 970 else | |
| 971 t = NULL; | |
| 972 | |
| 973 e = new EnumDeclaration(loc, id, t); | |
| 974 if (token.value == TOKsemicolon && id) | |
| 975 nextToken(); | |
| 976 else if (token.value == TOKlcurly) | |
| 977 { | |
| 978 //printf("enum definition\n"); | |
| 979 e->members = new Array(); | |
| 980 nextToken(); | |
| 981 unsigned char *comment = token.blockComment; | |
| 982 while (token.value != TOKrcurly) | |
| 983 { | |
| 984 if (token.value == TOKidentifier) | |
| 985 { EnumMember *em; | |
| 986 Expression *value; | |
| 987 Identifier *ident; | |
| 988 | |
| 989 loc = this->loc; | |
| 990 ident = token.ident; | |
| 991 value = NULL; | |
| 992 nextToken(); | |
| 993 if (token.value == TOKassign) | |
| 994 { | |
| 995 nextToken(); | |
| 996 value = parseAssignExp(); | |
| 997 } | |
| 998 em = new EnumMember(loc, ident, value); | |
| 999 e->members->push(em); | |
| 1000 if (token.value == TOKrcurly) | |
| 1001 ; | |
| 1002 else | |
| 1003 { addComment(em, comment); | |
| 1004 comment = NULL; | |
| 1005 check(TOKcomma); | |
| 1006 } | |
| 1007 addComment(em, comment); | |
| 1008 comment = token.blockComment; | |
| 1009 } | |
| 1010 else | |
| 1011 { error("enum member expected"); | |
| 1012 nextToken(); | |
| 1013 } | |
| 1014 } | |
| 1015 nextToken(); | |
| 1016 } | |
| 1017 else | |
| 1018 error("enum declaration is invalid"); | |
| 1019 | |
| 1020 return e; | |
| 1021 } | |
| 1022 | |
| 1023 Dsymbol *Parser::parseAggregate() | |
| 1024 { AggregateDeclaration *a = NULL; | |
| 1025 int anon = 0; | |
| 1026 enum TOK tok; | |
| 1027 Identifier *id; | |
| 1028 TemplateParameters *tpl = NULL; | |
| 1029 | |
| 1030 //printf("Parser::parseAggregate()\n"); | |
| 1031 tok = token.value; | |
| 1032 nextToken(); | |
| 1033 if (token.value != TOKidentifier) | |
| 1034 { id = NULL; | |
| 1035 } | |
| 1036 else | |
| 1037 { id = token.ident; | |
| 1038 nextToken(); | |
| 1039 | |
| 1040 if (token.value == TOKlparen) | |
| 1041 { // Class template declaration. | |
| 1042 | |
| 1043 // Gather template parameter list | |
| 1044 tpl = parseTemplateParameterList(); | |
| 1045 } | |
| 1046 } | |
| 1047 | |
| 1048 Loc loc = this->loc; | |
| 1049 switch (tok) | |
| 1050 { case TOKclass: | |
| 1051 case TOKinterface: | |
| 1052 { | |
| 1053 if (!id) | |
| 1054 error("anonymous classes not allowed"); | |
| 1055 | |
| 1056 // Collect base class(es) | |
| 1057 BaseClasses *baseclasses = NULL; | |
| 1058 if (token.value == TOKcolon) | |
| 1059 { | |
| 1060 nextToken(); | |
| 1061 baseclasses = parseBaseClasses(); | |
| 1062 | |
| 1063 if (token.value != TOKlcurly) | |
| 1064 error("members expected"); | |
| 1065 } | |
| 1066 | |
| 1067 if (tok == TOKclass) | |
| 1068 a = new ClassDeclaration(loc, id, baseclasses); | |
| 1069 else | |
| 1070 a = new InterfaceDeclaration(loc, id, baseclasses); | |
| 1071 break; | |
| 1072 } | |
| 1073 | |
| 1074 case TOKstruct: | |
| 1075 if (id) | |
| 1076 a = new StructDeclaration(loc, id); | |
| 1077 else | |
| 1078 anon = 1; | |
| 1079 break; | |
| 1080 | |
| 1081 case TOKunion: | |
| 1082 if (id) | |
| 1083 a = new UnionDeclaration(loc, id); | |
| 1084 else | |
| 1085 anon = 2; | |
| 1086 break; | |
| 1087 | |
| 1088 default: | |
| 1089 assert(0); | |
| 1090 break; | |
| 1091 } | |
| 1092 if (a && token.value == TOKsemicolon) | |
| 1093 { nextToken(); | |
| 1094 } | |
| 1095 else if (token.value == TOKlcurly) | |
| 1096 { | |
| 1097 //printf("aggregate definition\n"); | |
| 1098 nextToken(); | |
| 1099 Array *decl = parseDeclDefs(0); | |
| 1100 if (token.value != TOKrcurly) | |
| 1101 error("} expected following member declarations in aggregate"); | |
| 1102 nextToken(); | |
| 1103 if (anon) | |
| 1104 { | |
| 1105 /* Anonymous structs/unions are more like attributes. | |
| 1106 */ | |
| 1107 return new AnonDeclaration(loc, anon - 1, decl); | |
| 1108 } | |
| 1109 else | |
| 1110 a->members = decl; | |
| 1111 } | |
| 1112 else | |
| 1113 { | |
| 1114 error("{ } expected following aggregate declaration"); | |
| 1115 a = new StructDeclaration(loc, NULL); | |
| 1116 } | |
| 1117 | |
| 1118 if (tpl) | |
| 1119 { Array *decldefs; | |
| 1120 TemplateDeclaration *tempdecl; | |
| 1121 | |
| 1122 // Wrap a template around the aggregate declaration | |
| 1123 decldefs = new Array(); | |
| 1124 decldefs->push(a); | |
| 1125 tempdecl = new TemplateDeclaration(loc, id, tpl, decldefs); | |
| 1126 return tempdecl; | |
| 1127 } | |
| 1128 | |
| 1129 return a; | |
| 1130 } | |
| 1131 | |
| 1132 /******************************************* | |
| 1133 */ | |
| 1134 | |
| 1135 BaseClasses *Parser::parseBaseClasses() | |
| 1136 { | |
| 1137 enum PROT protection = PROTpublic; | |
| 1138 BaseClasses *baseclasses = new BaseClasses(); | |
| 1139 | |
| 1140 for (; 1; nextToken()) | |
| 1141 { | |
| 1142 switch (token.value) | |
| 1143 { | |
| 1144 case TOKidentifier: | |
| 1145 break; | |
| 1146 case TOKprivate: | |
| 1147 protection = PROTprivate; | |
| 1148 continue; | |
| 1149 case TOKpackage: | |
| 1150 protection = PROTpackage; | |
| 1151 continue; | |
| 1152 case TOKprotected: | |
| 1153 protection = PROTprotected; | |
| 1154 continue; | |
| 1155 case TOKpublic: | |
| 1156 protection = PROTpublic; | |
| 1157 continue; | |
| 1158 default: | |
| 1159 error("base classes expected instead of %s", token.toChars()); | |
| 1160 return NULL; | |
| 1161 } | |
| 1162 BaseClass *b = new BaseClass(parseBasicType(), protection); | |
| 1163 baseclasses->push(b); | |
| 1164 if (token.value != TOKcomma) | |
| 1165 break; | |
| 1166 protection = PROTpublic; | |
| 1167 } | |
| 1168 return baseclasses; | |
| 1169 } | |
| 1170 | |
| 1171 /************************************** | |
| 1172 * Parse a TemplateDeclaration. | |
| 1173 */ | |
| 1174 | |
| 1175 TemplateDeclaration *Parser::parseTemplateDeclaration() | |
| 1176 { | |
| 1177 TemplateDeclaration *tempdecl; | |
| 1178 Identifier *id; | |
| 1179 TemplateParameters *tpl; | |
| 1180 Array *decldefs; | |
| 1181 Loc loc = this->loc; | |
| 1182 | |
| 1183 nextToken(); | |
| 1184 if (token.value != TOKidentifier) | |
| 1185 { error("TemplateIdentifier expected following template"); | |
| 1186 goto Lerr; | |
| 1187 } | |
| 1188 id = token.ident; | |
| 1189 nextToken(); | |
| 1190 tpl = parseTemplateParameterList(); | |
| 1191 if (!tpl) | |
| 1192 goto Lerr; | |
| 1193 | |
| 1194 if (token.value != TOKlcurly) | |
| 1195 { error("members of template declaration expected"); | |
| 1196 goto Lerr; | |
| 1197 } | |
| 1198 else | |
| 1199 { | |
| 1200 nextToken(); | |
| 1201 decldefs = parseDeclDefs(0); | |
| 1202 if (token.value != TOKrcurly) | |
| 1203 { error("template member expected"); | |
| 1204 goto Lerr; | |
| 1205 } | |
| 1206 nextToken(); | |
| 1207 } | |
| 1208 | |
| 1209 tempdecl = new TemplateDeclaration(loc, id, tpl, decldefs); | |
| 1210 return tempdecl; | |
| 1211 | |
| 1212 Lerr: | |
| 1213 return NULL; | |
| 1214 } | |
| 1215 | |
| 1216 /****************************************** | |
| 1217 * Parse template parameter list. | |
| 1218 */ | |
| 1219 | |
| 1220 TemplateParameters *Parser::parseTemplateParameterList() | |
| 1221 { | |
| 1222 TemplateParameters *tpl; | |
| 1223 | |
| 1224 if (token.value != TOKlparen) | |
| 1225 { error("parenthesized TemplateParameterList expected following TemplateIdentifier"); | |
| 1226 goto Lerr; | |
| 1227 } | |
| 1228 tpl = new TemplateParameters(); | |
| 1229 nextToken(); | |
| 1230 | |
| 1231 // Get array of TemplateParameters | |
| 1232 if (token.value != TOKrparen) | |
| 1233 { int isvariadic = 0; | |
| 1234 | |
| 1235 while (1) | |
| 1236 { TemplateParameter *tp; | |
| 1237 Identifier *tp_ident = NULL; | |
| 1238 Type *tp_spectype = NULL; | |
| 1239 Type *tp_valtype = NULL; | |
| 1240 Type *tp_defaulttype = NULL; | |
| 1241 Expression *tp_specvalue = NULL; | |
| 1242 Expression *tp_defaultvalue = NULL; | |
| 1243 Token *t; | |
| 1244 | |
| 1245 // Get TemplateParameter | |
| 1246 | |
| 1247 // First, look ahead to see if it is a TypeParameter or a ValueParameter | |
| 1248 t = peek(&token); | |
| 1249 if (token.value == TOKalias) | |
| 1250 { // AliasParameter | |
| 1251 nextToken(); | |
| 1252 if (token.value != TOKidentifier) | |
| 1253 { error("Identifier expected for template parameter"); | |
| 1254 goto Lerr; | |
| 1255 } | |
| 1256 tp_ident = token.ident; | |
| 1257 nextToken(); | |
| 1258 if (token.value == TOKcolon) // : Type | |
| 1259 { | |
| 1260 nextToken(); | |
| 1261 tp_spectype = parseBasicType(); | |
| 1262 tp_spectype = parseDeclarator(tp_spectype, NULL); | |
| 1263 } | |
| 1264 if (token.value == TOKassign) // = Type | |
| 1265 { | |
| 1266 nextToken(); | |
| 1267 tp_defaulttype = parseBasicType(); | |
| 1268 tp_defaulttype = parseDeclarator(tp_defaulttype, NULL); | |
| 1269 } | |
| 1270 tp = new TemplateAliasParameter(loc, tp_ident, tp_spectype, tp_defaulttype); | |
| 1271 } | |
| 1272 else if (t->value == TOKcolon || t->value == TOKassign || | |
| 1273 t->value == TOKcomma || t->value == TOKrparen) | |
| 1274 { // TypeParameter | |
| 1275 if (token.value != TOKidentifier) | |
| 1276 { error("Identifier expected for template parameter"); | |
| 1277 goto Lerr; | |
| 1278 } | |
| 1279 tp_ident = token.ident; | |
| 1280 nextToken(); | |
| 1281 if (token.value == TOKcolon) // : Type | |
| 1282 { | |
| 1283 nextToken(); | |
| 1284 tp_spectype = parseBasicType(); | |
| 1285 tp_spectype = parseDeclarator(tp_spectype, NULL); | |
| 1286 } | |
| 1287 if (token.value == TOKassign) // = Type | |
| 1288 { | |
| 1289 nextToken(); | |
| 1290 tp_defaulttype = parseBasicType(); | |
| 1291 tp_defaulttype = parseDeclarator(tp_defaulttype, NULL); | |
| 1292 } | |
| 1293 tp = new TemplateTypeParameter(loc, tp_ident, tp_spectype, tp_defaulttype); | |
| 1294 } | |
| 1295 else if (token.value == TOKidentifier && t->value == TOKdotdotdot) | |
| 1296 { // ident... | |
| 1297 if (isvariadic) | |
| 1298 error("variadic template parameter must be last"); | |
| 1299 isvariadic = 1; | |
| 1300 tp_ident = token.ident; | |
| 1301 nextToken(); | |
| 1302 nextToken(); | |
| 1303 tp = new TemplateTupleParameter(loc, tp_ident); | |
| 1304 } | |
| 1305 else | |
| 1306 { // ValueParameter | |
| 1307 tp_valtype = parseBasicType(); | |
| 1308 tp_valtype = parseDeclarator(tp_valtype, &tp_ident); | |
| 1309 if (!tp_ident) | |
| 1310 { | |
| 1311 error("no identifier for template value parameter"); | |
| 1312 goto Lerr; | |
| 1313 } | |
| 1314 if (token.value == TOKcolon) // : CondExpression | |
| 1315 { | |
| 1316 nextToken(); | |
| 1317 tp_specvalue = parseCondExp(); | |
| 1318 } | |
| 1319 if (token.value == TOKassign) // = CondExpression | |
| 1320 { | |
| 1321 nextToken(); | |
| 1322 tp_defaultvalue = parseCondExp(); | |
| 1323 } | |
| 1324 tp = new TemplateValueParameter(loc, tp_ident, tp_valtype, tp_specvalue, tp_defaultvalue); | |
| 1325 } | |
| 1326 tpl->push(tp); | |
| 1327 if (token.value != TOKcomma) | |
| 1328 break; | |
| 1329 nextToken(); | |
| 1330 } | |
| 1331 } | |
| 1332 check(TOKrparen); | |
| 1333 return tpl; | |
| 1334 | |
| 1335 Lerr: | |
| 1336 return NULL; | |
| 1337 } | |
| 1338 | |
| 1339 /****************************************** | |
| 1340 * Parse template mixin. | |
| 1341 * mixin Foo; | |
| 1342 * mixin Foo!(args); | |
| 1343 * mixin a.b.c!(args).Foo!(args); | |
| 1344 * mixin Foo!(args) identifier; | |
| 1345 * mixin typeof(expr).identifier!(args); | |
| 1346 */ | |
| 1347 | |
| 1348 Dsymbol *Parser::parseMixin() | |
| 1349 { | |
| 1350 TemplateMixin *tm; | |
| 1351 Identifier *id; | |
| 1352 Type *tqual; | |
| 1353 Objects *tiargs; | |
| 1354 Array *idents; | |
| 1355 | |
| 1356 //printf("parseMixin()\n"); | |
| 1357 nextToken(); | |
| 1358 tqual = NULL; | |
| 1359 if (token.value == TOKdot) | |
| 1360 { | |
| 1361 id = Id::empty; | |
| 1362 } | |
| 1363 else | |
| 1364 { | |
| 1365 if (token.value == TOKtypeof) | |
| 1366 { Expression *exp; | |
| 1367 | |
| 1368 nextToken(); | |
| 1369 check(TOKlparen); | |
| 1370 exp = parseExpression(); | |
| 1371 check(TOKrparen); | |
| 1372 tqual = new TypeTypeof(loc, exp); | |
| 1373 check(TOKdot); | |
| 1374 } | |
| 1375 if (token.value != TOKidentifier) | |
| 1376 { | |
| 1377 error("identifier expected, not %s", token.toChars()); | |
| 1378 goto Lerr; | |
| 1379 } | |
| 1380 id = token.ident; | |
| 1381 nextToken(); | |
| 1382 } | |
| 1383 | |
| 1384 idents = new Array(); | |
| 1385 while (1) | |
| 1386 { | |
| 1387 tiargs = NULL; | |
| 1388 if (token.value == TOKnot) | |
| 1389 { | |
| 1390 nextToken(); | |
| 1391 tiargs = parseTemplateArgumentList(); | |
| 1392 } | |
| 1393 | |
| 1394 if (token.value != TOKdot) | |
| 1395 break; | |
| 1396 | |
| 1397 if (tiargs) | |
| 1398 { TemplateInstance *tempinst = new TemplateInstance(loc, id); | |
| 1399 tempinst->tiargs = tiargs; | |
| 1400 id = (Identifier *)tempinst; | |
| 1401 tiargs = NULL; | |
| 1402 } | |
| 1403 idents->push(id); | |
| 1404 | |
| 1405 nextToken(); | |
| 1406 if (token.value != TOKidentifier) | |
| 1407 { error("identifier expected following '.' instead of '%s'", token.toChars()); | |
| 1408 break; | |
| 1409 } | |
| 1410 id = token.ident; | |
| 1411 nextToken(); | |
| 1412 } | |
| 1413 idents->push(id); | |
| 1414 | |
| 1415 if (token.value == TOKidentifier) | |
| 1416 { | |
| 1417 id = token.ident; | |
| 1418 nextToken(); | |
| 1419 } | |
| 1420 else | |
| 1421 id = NULL; | |
| 1422 | |
| 1423 tm = new TemplateMixin(loc, id, tqual, idents, tiargs); | |
| 1424 if (token.value != TOKsemicolon) | |
| 1425 error("';' expected after mixin"); | |
| 1426 nextToken(); | |
| 1427 | |
| 1428 return tm; | |
| 1429 | |
| 1430 Lerr: | |
| 1431 return NULL; | |
| 1432 } | |
| 1433 | |
| 1434 /****************************************** | |
| 1435 * Parse template argument list. | |
| 1436 * Input: | |
| 1437 * current token is opening '(' | |
| 1438 * Output: | |
| 1439 * current token is one after closing ')' | |
| 1440 */ | |
| 1441 | |
| 1442 Objects *Parser::parseTemplateArgumentList() | |
| 1443 { | |
| 1444 //printf("Parser::parseTemplateArgumentList()\n"); | |
| 1445 Objects *tiargs = new Objects(); | |
| 1446 if (token.value != TOKlparen) | |
| 1447 { error("!(TemplateArgumentList) expected following TemplateIdentifier"); | |
| 1448 return tiargs; | |
| 1449 } | |
| 1450 nextToken(); | |
| 1451 | |
| 1452 // Get TemplateArgumentList | |
| 1453 if (token.value != TOKrparen) | |
| 1454 { | |
| 1455 while (1) | |
| 1456 { | |
| 1457 // See if it is an Expression or a Type | |
| 1458 if (isDeclaration(&token, 0, TOKreserved, NULL)) | |
| 1459 { // Type | |
| 1460 Type *ta; | |
| 1461 | |
| 1462 // Get TemplateArgument | |
| 1463 ta = parseBasicType(); | |
| 1464 ta = parseDeclarator(ta, NULL); | |
| 1465 tiargs->push(ta); | |
| 1466 } | |
| 1467 else | |
| 1468 { // Expression | |
| 1469 Expression *ea; | |
| 1470 | |
| 1471 ea = parseAssignExp(); | |
| 1472 tiargs->push(ea); | |
| 1473 } | |
| 1474 if (token.value != TOKcomma) | |
| 1475 break; | |
| 1476 nextToken(); | |
| 1477 } | |
| 1478 } | |
| 1479 check(TOKrparen, "template argument list"); | |
| 1480 return tiargs; | |
| 1481 } | |
| 1482 | |
| 1483 Import *Parser::parseImport(Array *decldefs, int isstatic) | |
| 1484 { Import *s; | |
| 1485 Identifier *id; | |
| 1486 Identifier *aliasid = NULL; | |
| 1487 Array *a; | |
| 1488 Loc loc; | |
| 1489 | |
| 1490 //printf("Parser::parseImport()\n"); | |
| 1491 do | |
| 1492 { | |
| 1493 L1: | |
| 1494 nextToken(); | |
| 1495 if (token.value != TOKidentifier) | |
| 1496 { error("Identifier expected following import"); | |
| 1497 break; | |
| 1498 } | |
| 1499 | |
| 1500 loc = this->loc; | |
| 1501 a = NULL; | |
| 1502 id = token.ident; | |
| 1503 nextToken(); | |
| 1504 if (!aliasid && token.value == TOKassign) | |
| 1505 { | |
| 1506 aliasid = id; | |
| 1507 goto L1; | |
| 1508 } | |
| 1509 while (token.value == TOKdot) | |
| 1510 { | |
| 1511 if (!a) | |
| 1512 a = new Array(); | |
| 1513 a->push(id); | |
| 1514 nextToken(); | |
| 1515 if (token.value != TOKidentifier) | |
| 1516 { error("Identifier expected following package"); | |
| 1517 break; | |
| 1518 } | |
| 1519 id = token.ident; | |
| 1520 nextToken(); | |
| 1521 } | |
| 1522 | |
| 1523 s = new Import(loc, a, token.ident, aliasid, isstatic); | |
| 1524 decldefs->push(s); | |
| 1525 | |
| 1526 /* Look for | |
| 1527 * : alias=name, alias=name; | |
| 1528 * syntax. | |
| 1529 */ | |
| 1530 if (token.value == TOKcolon) | |
| 1531 { | |
| 1532 do | |
| 1533 { Identifier *name; | |
| 1534 Identifier *alias; | |
| 1535 | |
| 1536 nextToken(); | |
| 1537 if (token.value != TOKidentifier) | |
| 1538 { error("Identifier expected following :"); | |
| 1539 break; | |
| 1540 } | |
| 1541 alias = token.ident; | |
| 1542 nextToken(); | |
| 1543 if (token.value == TOKassign) | |
| 1544 { | |
| 1545 nextToken(); | |
| 1546 if (token.value != TOKidentifier) | |
| 1547 { error("Identifier expected following %s=", alias->toChars()); | |
| 1548 break; | |
| 1549 } | |
| 1550 name = token.ident; | |
| 1551 nextToken(); | |
| 1552 } | |
| 1553 else | |
| 1554 { name = alias; | |
| 1555 alias = NULL; | |
| 1556 } | |
| 1557 s->addAlias(name, alias); | |
| 1558 } while (token.value == TOKcomma); | |
| 1559 break; // no comma-separated imports of this form | |
| 1560 } | |
| 1561 | |
| 1562 aliasid = NULL; | |
| 1563 } while (token.value == TOKcomma); | |
| 1564 | |
| 1565 if (token.value == TOKsemicolon) | |
| 1566 nextToken(); | |
| 1567 else | |
| 1568 { | |
| 1569 error("';' expected"); | |
| 1570 nextToken(); | |
| 1571 } | |
| 1572 | |
| 1573 return NULL; | |
| 1574 } | |
| 1575 | |
| 1576 Type *Parser::parseBasicType() | |
| 1577 { Type *t; | |
| 1578 Identifier *id; | |
| 1579 TypeQualified *tid; | |
| 1580 TemplateInstance *tempinst; | |
| 1581 | |
| 1582 //printf("parseBasicType()\n"); | |
| 1583 switch (token.value) | |
| 1584 { | |
| 1585 CASE_BASIC_TYPES_X(t): | |
| 1586 nextToken(); | |
| 1587 break; | |
| 1588 | |
| 1589 case TOKidentifier: | |
| 1590 id = token.ident; | |
| 1591 nextToken(); | |
| 1592 if (token.value == TOKnot) | |
| 1593 { | |
| 1594 nextToken(); | |
| 1595 tempinst = new TemplateInstance(loc, id); | |
| 1596 tempinst->tiargs = parseTemplateArgumentList(); | |
| 1597 tid = new TypeInstance(loc, tempinst); | |
| 1598 goto Lident2; | |
| 1599 } | |
| 1600 Lident: | |
| 1601 tid = new TypeIdentifier(loc, id); | |
| 1602 Lident2: | |
| 1603 while (token.value == TOKdot) | |
| 1604 { nextToken(); | |
| 1605 if (token.value != TOKidentifier) | |
| 1606 { error("identifier expected following '.' instead of '%s'", token.toChars()); | |
| 1607 break; | |
| 1608 } | |
| 1609 id = token.ident; | |
| 1610 nextToken(); | |
| 1611 if (token.value == TOKnot) | |
| 1612 { | |
| 1613 nextToken(); | |
| 1614 tempinst = new TemplateInstance(loc, id); | |
| 1615 tempinst->tiargs = parseTemplateArgumentList(); | |
| 1616 tid->addIdent((Identifier *)tempinst); | |
| 1617 } | |
| 1618 else | |
| 1619 tid->addIdent(id); | |
| 1620 } | |
| 1621 t = tid; | |
| 1622 break; | |
| 1623 | |
| 1624 case TOKdot: | |
| 1625 id = Id::empty; | |
| 1626 goto Lident; | |
| 1627 | |
| 1628 case TOKtypeof: | |
| 1629 { Expression *exp; | |
| 1630 | |
| 1631 nextToken(); | |
| 1632 check(TOKlparen); | |
| 1633 exp = parseExpression(); | |
| 1634 check(TOKrparen); | |
| 1635 tid = new TypeTypeof(loc, exp); | |
| 1636 goto Lident2; | |
| 1637 } | |
| 1638 | |
| 1639 default: | |
| 1640 error("basic type expected, not %s", token.toChars()); | |
| 1641 t = Type::tint32; | |
| 1642 break; | |
| 1643 } | |
| 1644 return t; | |
| 1645 } | |
| 1646 | |
| 1647 Type *Parser::parseBasicType2(Type *t) | |
| 1648 { | |
| 1649 Type *ts; | |
| 1650 Type *ta; | |
| 1651 | |
| 1652 //printf("parseBasicType2()\n"); | |
| 1653 while (1) | |
| 1654 { | |
| 1655 switch (token.value) | |
| 1656 { | |
| 1657 case TOKmul: | |
| 1658 t = new TypePointer(t); | |
| 1659 nextToken(); | |
| 1660 continue; | |
| 1661 | |
| 1662 case TOKlbracket: | |
| 1663 #if LTORARRAYDECL | |
| 1664 // Handle []. Make sure things like | |
| 1665 // int[3][1] a; | |
| 1666 // is (array[1] of array[3] of int) | |
| 1667 nextToken(); | |
| 1668 if (token.value == TOKrbracket) | |
| 1669 { | |
| 1670 t = new TypeDArray(t); // [] | |
| 1671 nextToken(); | |
| 1672 } | |
| 1673 else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
| 1674 { // It's an associative array declaration | |
| 1675 Type *index; | |
| 1676 | |
| 1677 //printf("it's an associative array\n"); | |
| 1678 index = parseBasicType(); | |
| 1679 index = parseDeclarator(index, NULL); // [ type ] | |
| 1680 t = new TypeAArray(t, index); | |
| 1681 check(TOKrbracket); | |
| 1682 } | |
| 1683 else | |
| 1684 { | |
| 1685 //printf("it's [expression]\n"); | |
| 1686 inBrackets++; | |
| 1687 Expression *e = parseExpression(); // [ expression ] | |
| 1688 if (token.value == TOKslice) | |
| 1689 { Expression *e2; | |
| 1690 | |
| 1691 nextToken(); | |
| 1692 e2 = parseExpression(); // [ exp .. exp ] | |
| 1693 t = new TypeSlice(t, e, e2); | |
| 1694 } | |
| 1695 else | |
| 1696 t = new TypeSArray(t,e); | |
| 1697 inBrackets--; | |
| 1698 check(TOKrbracket); | |
| 1699 } | |
| 1700 continue; | |
| 1701 #else | |
| 1702 // Handle []. Make sure things like | |
| 1703 // int[3][1] a; | |
| 1704 // is (array[3] of array[1] of int) | |
| 1705 ts = t; | |
| 1706 while (token.value == TOKlbracket) | |
| 1707 { | |
| 1708 nextToken(); | |
| 1709 if (token.value == TOKrbracket) | |
| 1710 { | |
| 1711 ta = new TypeDArray(t); // [] | |
| 1712 nextToken(); | |
| 1713 } | |
| 1714 else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
| 1715 { // It's an associative array declaration | |
| 1716 Type *index; | |
| 1717 | |
| 1718 //printf("it's an associative array\n"); | |
| 1719 index = parseBasicType(); | |
| 1720 index = parseDeclarator(index, NULL); // [ type ] | |
| 1721 check(TOKrbracket); | |
| 1722 ta = new TypeAArray(t, index); | |
| 1723 } | |
| 1724 else | |
| 1725 { | |
| 1726 //printf("it's [expression]\n"); | |
| 1727 Expression *e = parseExpression(); // [ expression ] | |
| 1728 ta = new TypeSArray(t,e); | |
| 1729 check(TOKrbracket); | |
| 1730 } | |
| 1731 Type **pt; | |
| 1732 for (pt = &ts; *pt != t; pt = &(*pt)->next) | |
| 1733 ; | |
| 1734 *pt = ta; | |
| 1735 } | |
| 1736 t = ts; | |
| 1737 continue; | |
| 1738 #endif | |
| 1739 | |
| 1740 case TOKdelegate: | |
| 1741 case TOKfunction: | |
| 1742 { // Handle delegate declaration: | |
| 1743 // t delegate(parameter list) | |
| 1744 // t function(parameter list) | |
| 1745 Arguments *arguments; | |
| 1746 int varargs; | |
| 1747 enum TOK save = token.value; | |
| 1748 | |
| 1749 nextToken(); | |
| 1750 arguments = parseParameters(&varargs); | |
| 1751 t = new TypeFunction(arguments, t, varargs, linkage); | |
| 1752 if (save == TOKdelegate) | |
| 1753 t = new TypeDelegate(t); | |
| 1754 else | |
| 1755 t = new TypePointer(t); // pointer to function | |
| 1756 continue; | |
| 1757 } | |
| 1758 | |
| 1759 default: | |
| 1760 ts = t; | |
| 1761 break; | |
| 1762 } | |
| 1763 break; | |
| 1764 } | |
| 1765 return ts; | |
| 1766 } | |
| 1767 | |
| 1768 Type *Parser::parseDeclarator(Type *t, Identifier **pident, TemplateParameters **tpl) | |
| 1769 { Type *ts; | |
| 1770 Type *ta; | |
| 1771 | |
| 1772 //printf("parseDeclarator(tpl = %p)\n", tpl); | |
| 1773 t = parseBasicType2(t); | |
| 1774 | |
| 1775 switch (token.value) | |
| 1776 { | |
| 1777 | |
| 1778 case TOKidentifier: | |
| 1779 if (pident) | |
| 1780 *pident = token.ident; | |
| 1781 else | |
| 1782 error("unexpected identifer '%s' in declarator", token.ident->toChars()); | |
| 1783 ts = t; | |
| 1784 nextToken(); | |
| 1785 break; | |
| 1786 | |
| 1787 case TOKlparen: | |
| 1788 nextToken(); | |
| 1789 ts = parseDeclarator(t, pident); | |
| 1790 check(TOKrparen); | |
| 1791 break; | |
| 1792 | |
| 1793 default: | |
| 1794 ts = t; | |
| 1795 break; | |
| 1796 } | |
| 1797 | |
| 1798 while (1) | |
| 1799 { | |
| 1800 switch (token.value) | |
| 1801 { | |
| 1802 #if CARRAYDECL | |
| 1803 case TOKlbracket: | |
| 1804 { // This is the old C-style post [] syntax. | |
| 1805 nextToken(); | |
| 1806 if (token.value == TOKrbracket) | |
| 1807 { | |
| 1808 ta = new TypeDArray(t); // [] | |
| 1809 nextToken(); | |
| 1810 } | |
| 1811 else if (isDeclaration(&token, 0, TOKrbracket, NULL)) | |
| 1812 { // It's an associative array declaration | |
| 1813 Type *index; | |
| 1814 | |
| 1815 //printf("it's an associative array\n"); | |
| 1816 index = parseBasicType(); | |
| 1817 index = parseDeclarator(index, NULL); // [ type ] | |
| 1818 check(TOKrbracket); | |
| 1819 ta = new TypeAArray(t, index); | |
| 1820 } | |
| 1821 else | |
| 1822 { | |
| 1823 //printf("it's [expression]\n"); | |
| 1824 Expression *e = parseExpression(); // [ expression ] | |
| 1825 ta = new TypeSArray(t, e); | |
| 1826 check(TOKrbracket); | |
| 1827 } | |
| 1828 Type **pt; | |
| 1829 for (pt = &ts; *pt != t; pt = &(*pt)->next) | |
| 1830 ; | |
| 1831 *pt = ta; | |
| 1832 continue; | |
| 1833 } | |
| 1834 #endif | |
| 1835 case TOKlparen: | |
| 1836 { Arguments *arguments; | |
| 1837 int varargs; | |
| 1838 | |
| 1839 if (tpl) | |
| 1840 { | |
| 1841 /* Look ahead to see if this is (...)(...), | |
| 1842 * i.e. a function template declaration | |
| 1843 */ | |
| 1844 if (peekPastParen(&token)->value == TOKlparen) | |
| 1845 { // It's a function template declaration | |
| 1846 //printf("function template declaration\n"); | |
| 1847 | |
| 1848 // Gather template parameter list | |
| 1849 *tpl = parseTemplateParameterList(); | |
| 1850 } | |
| 1851 } | |
| 1852 | |
| 1853 arguments = parseParameters(&varargs); | |
|
35
3cfcb944304e
[svn r39] * Updated to DMD 1.022 with the exception of:
lindquist
parents:
19
diff
changeset
|
1854 Type *ta = new TypeFunction(arguments, t, varargs, linkage); |
|
3cfcb944304e
[svn r39] * Updated to DMD 1.022 with the exception of:
lindquist
parents:
19
diff
changeset
|
1855 Type **pt; |
| 1 | 1856 for (pt = &ts; *pt != t; pt = &(*pt)->next) |
| 1857 ; | |
| 1858 *pt = ta; | |
| 1859 break; | |
| 1860 } | |
| 1861 } | |
| 1862 break; | |
| 1863 } | |
| 1864 | |
| 1865 return ts; | |
| 1866 } | |
| 1867 | |
| 1868 /********************************** | |
| 1869 * Return array of Declaration *'s. | |
| 1870 */ | |
| 1871 | |
| 1872 Array *Parser::parseDeclarations() | |
| 1873 { | |
| 1874 enum STC storage_class; | |
| 1875 enum STC stc; | |
| 1876 Type *ts; | |
| 1877 Type *t; | |
| 1878 Type *tfirst; | |
| 1879 Identifier *ident; | |
| 1880 Array *a; | |
| 1881 enum TOK tok; | |
| 1882 unsigned char *comment = token.blockComment; | |
| 1883 enum LINK link = linkage; | |
| 1884 | |
| 1885 //printf("parseDeclarations()\n"); | |
| 1886 switch (token.value) | |
| 1887 { | |
| 1888 case TOKtypedef: | |
| 1889 case TOKalias: | |
| 1890 tok = token.value; | |
| 1891 nextToken(); | |
| 1892 break; | |
| 1893 | |
| 1894 default: | |
| 1895 tok = TOKreserved; | |
| 1896 break; | |
| 1897 } | |
| 1898 | |
| 1899 storage_class = STCundefined; | |
| 1900 while (1) | |
| 1901 { | |
| 1902 switch (token.value) | |
| 1903 { | |
| 1904 case TOKconst: stc = STCconst; goto L1; | |
| 1905 case TOKstatic: stc = STCstatic; goto L1; | |
| 1906 case TOKfinal: stc = STCfinal; goto L1; | |
| 1907 case TOKauto: stc = STCauto; goto L1; | |
| 1908 case TOKscope: stc = STCscope; goto L1; | |
| 1909 case TOKoverride: stc = STCoverride; goto L1; | |
| 1910 case TOKabstract: stc = STCabstract; goto L1; | |
| 1911 case TOKsynchronized: stc = STCsynchronized; goto L1; | |
| 1912 case TOKdeprecated: stc = STCdeprecated; goto L1; | |
| 1913 L1: | |
| 1914 if (storage_class & stc) | |
| 1915 error("redundant storage class '%s'", token.toChars()); | |
| 1916 storage_class = (STC) (storage_class | stc); | |
| 1917 nextToken(); | |
| 1918 continue; | |
| 1919 | |
| 1920 case TOKextern: | |
| 1921 if (peek(&token)->value != TOKlparen) | |
| 1922 { stc = STCextern; | |
| 1923 goto L1; | |
| 1924 } | |
| 1925 | |
| 1926 link = parseLinkage(); | |
| 1927 continue; | |
| 1928 | |
| 1929 default: | |
| 1930 break; | |
| 1931 } | |
| 1932 break; | |
| 1933 } | |
| 1934 | |
| 1935 a = new Array(); | |
| 1936 | |
| 1937 /* Look for auto initializers: | |
| 1938 * storage_class identifier = initializer; | |
| 1939 */ | |
| 1940 while (storage_class && | |
| 1941 token.value == TOKidentifier && | |
| 1942 peek(&token)->value == TOKassign) | |
| 1943 { | |
| 1944 ident = token.ident; | |
| 1945 nextToken(); | |
| 1946 nextToken(); | |
| 1947 Initializer *init = parseInitializer(); | |
| 1948 VarDeclaration *v = new VarDeclaration(loc, NULL, ident, init); | |
| 1949 v->storage_class = storage_class; | |
| 1950 a->push(v); | |
| 1951 if (token.value == TOKsemicolon) | |
| 1952 { | |
| 1953 nextToken(); | |
| 1954 addComment(v, comment); | |
| 1955 } | |
| 1956 else if (token.value == TOKcomma) | |
| 1957 { | |
| 1958 nextToken(); | |
| 1959 if (!(token.value == TOKidentifier && peek(&token)->value == TOKassign)) | |
| 1960 { | |
| 1961 error("Identifier expected following comma"); | |
| 1962 } | |
| 1963 else | |
| 1964 continue; | |
| 1965 } | |
| 1966 else | |
| 1967 error("semicolon expected following auto declaration, not '%s'", token.toChars()); | |
| 1968 return a; | |
| 1969 } | |
| 1970 | |
| 1971 if (token.value == TOKclass) | |
| 1972 { AggregateDeclaration *s; | |
| 1973 | |
| 1974 s = (AggregateDeclaration *)parseAggregate(); | |
| 1975 s->storage_class |= storage_class; | |
| 1976 a->push(s); | |
| 1977 addComment(s, comment); | |
| 1978 return a; | |
| 1979 } | |
| 1980 | |
| 1981 ts = parseBasicType(); | |
| 1982 ts = parseBasicType2(ts); | |
| 1983 tfirst = NULL; | |
| 1984 | |
| 1985 while (1) | |
| 1986 { | |
| 1987 Loc loc = this->loc; | |
| 1988 TemplateParameters *tpl = NULL; | |
| 1989 | |
| 1990 ident = NULL; | |
| 1991 t = parseDeclarator(ts, &ident, &tpl); | |
| 1992 assert(t); | |
| 1993 if (!tfirst) | |
| 1994 tfirst = t; | |
| 1995 else if (t != tfirst) | |
| 1996 error("multiple declarations must have the same type, not %s and %s", | |
| 1997 tfirst->toChars(), t->toChars()); | |
| 1998 if (!ident) | |
| 1999 error("no identifier for declarator %s", t->toChars()); | |
| 2000 | |
| 2001 if (tok == TOKtypedef || tok == TOKalias) | |
| 2002 { Declaration *v; | |
| 2003 Initializer *init; | |
| 2004 | |
| 2005 init = NULL; | |
| 2006 if (token.value == TOKassign) | |
| 2007 { | |
| 2008 nextToken(); | |
| 2009 init = parseInitializer(); | |
| 2010 } | |
| 2011 if (tok == TOKtypedef) | |
| 2012 v = new TypedefDeclaration(loc, ident, t, init); | |
| 2013 else | |
| 2014 { if (init) | |
| 2015 error("alias cannot have initializer"); | |
| 2016 v = new AliasDeclaration(loc, ident, t); | |
| 2017 } | |
| 2018 v->storage_class = storage_class; | |
| 2019 if (link == linkage) | |
| 2020 a->push(v); | |
| 2021 else | |
| 2022 { | |
| 2023 Array *ax = new Array(); | |
| 2024 ax->push(v); | |
| 2025 Dsymbol *s = new LinkDeclaration(link, ax); | |
| 2026 a->push(s); | |
| 2027 } | |
| 2028 switch (token.value) | |
| 2029 { case TOKsemicolon: | |
| 2030 nextToken(); | |
| 2031 addComment(v, comment); | |
| 2032 break; | |
| 2033 | |
| 2034 case TOKcomma: | |
| 2035 nextToken(); | |
| 2036 addComment(v, comment); | |
| 2037 continue; | |
| 2038 | |
| 2039 default: | |
| 2040 error("semicolon expected to close %s declaration", Token::toChars(tok)); | |
| 2041 break; | |
| 2042 } | |
| 2043 } | |
| 2044 else if (t->ty == Tfunction) | |
| 2045 { FuncDeclaration *f; | |
| 2046 Dsymbol *s; | |
| 2047 | |
| 2048 f = new FuncDeclaration(loc, 0, ident, storage_class, t); | |
| 2049 addComment(f, comment); | |
| 2050 parseContracts(f); | |
| 2051 addComment(f, NULL); | |
| 2052 if (link == linkage) | |
| 2053 { | |
| 2054 s = f; | |
| 2055 } | |
| 2056 else | |
| 2057 { | |
| 2058 Array *ax = new Array(); | |
| 2059 ax->push(f); | |
| 2060 s = new LinkDeclaration(link, ax); | |
| 2061 } | |
| 2062 if (tpl) // it's a function template | |
| 2063 { Array *decldefs; | |
| 2064 TemplateDeclaration *tempdecl; | |
| 2065 | |
| 2066 // Wrap a template around the aggregate declaration | |
| 2067 decldefs = new Array(); | |
| 2068 decldefs->push(s); | |
| 2069 tempdecl = new TemplateDeclaration(loc, s->ident, tpl, decldefs); | |
| 2070 s = tempdecl; | |
| 2071 } | |
| 2072 addComment(s, comment); | |
| 2073 a->push(s); | |
| 2074 } | |
| 2075 else | |
| 2076 { VarDeclaration *v; | |
| 2077 Initializer *init; | |
| 2078 | |
| 2079 init = NULL; | |
| 2080 if (token.value == TOKassign) | |
| 2081 { | |
| 2082 nextToken(); | |
| 2083 init = parseInitializer(); | |
| 2084 } | |
| 2085 v = new VarDeclaration(loc, t, ident, init); | |
| 2086 v->storage_class = storage_class; | |
| 2087 if (link == linkage) | |
| 2088 a->push(v); | |
| 2089 else | |
| 2090 { | |
| 2091 Array *ax = new Array(); | |
| 2092 ax->push(v); | |
| 2093 Dsymbol *s = new LinkDeclaration(link, ax); | |
| 2094 a->push(s); | |
| 2095 } | |
| 2096 switch (token.value) | |
| 2097 { case TOKsemicolon: | |
| 2098 nextToken(); | |
| 2099 addComment(v, comment); | |
| 2100 break; | |
| 2101 | |
| 2102 case TOKcomma: | |
| 2103 nextToken(); | |
| 2104 addComment(v, comment); | |
| 2105 continue; | |
| 2106 | |
| 2107 default: | |
| 2108 error("semicolon expected, not '%s'", token.toChars()); | |
| 2109 break; | |
| 2110 } | |
| 2111 } | |
| 2112 break; | |
| 2113 } | |
| 2114 return a; | |
| 2115 } | |
| 2116 | |
| 2117 /***************************************** | |
| 2118 * Parse contracts following function declaration. | |
| 2119 */ | |
| 2120 | |
| 2121 void Parser::parseContracts(FuncDeclaration *f) | |
| 2122 { | |
| 2123 Type *tb; | |
| 2124 enum LINK linksave = linkage; | |
| 2125 | |
| 2126 // The following is irrelevant, as it is overridden by sc->linkage in | |
| 2127 // TypeFunction::semantic | |
| 2128 linkage = LINKd; // nested functions have D linkage | |
| 2129 L1: | |
| 2130 switch (token.value) | |
| 2131 { | |
| 2132 case TOKlcurly: | |
| 2133 if (f->frequire || f->fensure) | |
| 2134 error("missing body { ... } after in or out"); | |
| 2135 f->fbody = parseStatement(PSsemi); | |
| 2136 f->endloc = endloc; | |
| 2137 break; | |
| 2138 | |
| 2139 case TOKbody: | |
| 2140 nextToken(); | |
| 2141 f->fbody = parseStatement(PScurly); | |
| 2142 f->endloc = endloc; | |
| 2143 break; | |
| 2144 | |
| 2145 case TOKsemicolon: | |
| 2146 if (f->frequire || f->fensure) | |
| 2147 error("missing body { ... } after in or out"); | |
| 2148 nextToken(); | |
| 2149 break; | |
| 2150 | |
| 2151 #if 0 // Do we want this for function declarations, so we can do: | |
| 2152 // int x, y, foo(), z; | |
| 2153 case TOKcomma: | |
| 2154 nextToken(); | |
| 2155 continue; | |
| 2156 #endif | |
| 2157 | |
| 2158 #if 0 // Dumped feature | |
| 2159 case TOKthrow: | |
| 2160 if (!f->fthrows) | |
| 2161 f->fthrows = new Array(); | |
| 2162 nextToken(); | |
| 2163 check(TOKlparen); | |
| 2164 while (1) | |
| 2165 { | |
| 2166 tb = parseBasicType(); | |
| 2167 f->fthrows->push(tb); | |
| 2168 if (token.value == TOKcomma) | |
| 2169 { nextToken(); | |
| 2170 continue; | |
| 2171 } | |
| 2172 break; | |
| 2173 } | |
| 2174 check(TOKrparen); | |
| 2175 goto L1; | |
| 2176 #endif | |
| 2177 | |
| 2178 case TOKin: | |
| 2179 nextToken(); | |
| 2180 if (f->frequire) | |
| 2181 error("redundant 'in' statement"); | |
| 2182 f->frequire = parseStatement(PScurly | PSscope); | |
| 2183 goto L1; | |
| 2184 | |
| 2185 case TOKout: | |
| 2186 // parse: out (identifier) { statement } | |
| 2187 nextToken(); | |
| 2188 if (token.value != TOKlcurly) | |
| 2189 { | |
| 2190 check(TOKlparen); | |
| 2191 if (token.value != TOKidentifier) | |
| 2192 error("(identifier) following 'out' expected, not %s", token.toChars()); | |
| 2193 f->outId = token.ident; | |
| 2194 nextToken(); | |
| 2195 check(TOKrparen); | |
| 2196 } | |
| 2197 if (f->fensure) | |
| 2198 error("redundant 'out' statement"); | |
| 2199 f->fensure = parseStatement(PScurly | PSscope); | |
| 2200 goto L1; | |
| 2201 | |
| 2202 default: | |
| 2203 error("semicolon expected following function declaration"); | |
| 2204 break; | |
| 2205 } | |
| 2206 linkage = linksave; | |
| 2207 } | |
| 2208 | |
| 2209 /***************************************** | |
| 2210 */ | |
| 2211 | |
| 2212 Initializer *Parser::parseInitializer() | |
| 2213 { | |
| 2214 StructInitializer *is; | |
| 2215 ArrayInitializer *ia; | |
| 2216 ExpInitializer *ie; | |
| 2217 Expression *e; | |
| 2218 Identifier *id; | |
| 2219 Initializer *value; | |
| 2220 int comma; | |
| 2221 Loc loc = this->loc; | |
| 2222 Token *t; | |
| 2223 int braces; | |
| 2224 | |
| 2225 switch (token.value) | |
| 2226 { | |
| 2227 case TOKlcurly: | |
| 2228 /* Scan ahead to see if it is a struct initializer or | |
| 2229 * a function literal. | |
| 2230 * If it contains a ';', it is a function literal. | |
| 2231 * Treat { } as a struct initializer. | |
| 2232 */ | |
| 2233 braces = 1; | |
| 2234 for (t = peek(&token); 1; t = peek(t)) | |
| 2235 { | |
| 2236 switch (t->value) | |
| 2237 { | |
| 2238 case TOKsemicolon: | |
| 2239 case TOKreturn: | |
| 2240 goto Lexpression; | |
| 2241 | |
| 2242 case TOKlcurly: | |
| 2243 braces++; | |
| 2244 continue; | |
| 2245 | |
| 2246 case TOKrcurly: | |
| 2247 if (--braces == 0) | |
| 2248 break; | |
| 2249 continue; | |
| 2250 | |
| 92 | 2251 case TOKeof: |
| 2252 break; | |
| 2253 | |
| 1 | 2254 default: |
| 2255 continue; | |
| 2256 } | |
| 2257 break; | |
| 2258 } | |
| 2259 | |
| 2260 is = new StructInitializer(loc); | |
| 2261 nextToken(); | |
| 2262 comma = 0; | |
| 2263 while (1) | |
| 2264 { | |
| 2265 switch (token.value) | |
| 2266 { | |
| 2267 case TOKidentifier: | |
| 2268 if (comma == 1) | |
| 2269 error("comma expected separating field initializers"); | |
| 2270 t = peek(&token); | |
| 2271 if (t->value == TOKcolon) | |
| 2272 { | |
| 2273 id = token.ident; | |
| 2274 nextToken(); | |
| 2275 nextToken(); // skip over ':' | |
| 2276 } | |
| 2277 else | |
| 2278 { id = NULL; | |
| 2279 } | |
| 2280 value = parseInitializer(); | |
| 2281 is->addInit(id, value); | |
| 2282 comma = 1; | |
| 2283 continue; | |
| 2284 | |
| 2285 case TOKcomma: | |
| 2286 nextToken(); | |
| 2287 comma = 2; | |
| 2288 continue; | |
| 2289 | |
| 2290 case TOKrcurly: // allow trailing comma's | |
| 2291 nextToken(); | |
| 2292 break; | |
| 2293 | |
| 92 | 2294 case TOKeof: |
| 2295 error("found EOF instead of initializer"); | |
| 2296 break; | |
| 2297 | |
| 1 | 2298 default: |
| 2299 value = parseInitializer(); | |
| 2300 is->addInit(NULL, value); | |
| 2301 comma = 1; | |
| 2302 continue; | |
| 2303 //error("found '%s' instead of field initializer", token.toChars()); | |
| 2304 //break; | |
| 2305 } | |
| 2306 break; | |
| 2307 } | |
| 2308 return is; | |
| 2309 | |
| 2310 case TOKlbracket: | |
| 2311 ia = new ArrayInitializer(loc); | |
| 2312 nextToken(); | |
| 2313 comma = 0; | |
| 2314 while (1) | |
| 2315 { | |
| 2316 switch (token.value) | |
| 2317 { | |
| 2318 default: | |
| 2319 if (comma == 1) | |
| 2320 { error("comma expected separating array initializers, not %s", token.toChars()); | |
| 2321 nextToken(); | |
| 2322 break; | |
| 2323 } | |
| 2324 e = parseAssignExp(); | |
| 2325 if (!e) | |
| 2326 break; | |
| 2327 if (token.value == TOKcolon) | |
| 2328 { | |
| 2329 nextToken(); | |
| 2330 value = parseInitializer(); | |
| 2331 } | |
| 2332 else | |
| 2333 { value = new ExpInitializer(e->loc, e); | |
| 2334 e = NULL; | |
| 2335 } | |
| 2336 ia->addInit(e, value); | |
| 2337 comma = 1; | |
| 2338 continue; | |
| 2339 | |
| 2340 case TOKlcurly: | |
| 2341 case TOKlbracket: | |
| 2342 if (comma == 1) | |
| 2343 error("comma expected separating array initializers, not %s", token.toChars()); | |
| 2344 value = parseInitializer(); | |
| 2345 ia->addInit(NULL, value); | |
| 2346 comma = 1; | |
| 2347 continue; | |
| 2348 | |
| 2349 case TOKcomma: | |
| 2350 nextToken(); | |
| 2351 comma = 2; | |
| 2352 continue; | |
| 2353 | |
| 2354 case TOKrbracket: // allow trailing comma's | |
| 2355 nextToken(); | |
| 2356 break; | |
| 2357 | |
| 2358 case TOKeof: | |
| 2359 error("found '%s' instead of array initializer", token.toChars()); | |
| 2360 break; | |
| 2361 } | |
| 2362 break; | |
| 2363 } | |
| 2364 return ia; | |
| 2365 | |
| 2366 case TOKvoid: | |
| 2367 t = peek(&token); | |
| 2368 if (t->value == TOKsemicolon || t->value == TOKcomma) | |
| 2369 { | |
| 2370 nextToken(); | |
| 2371 return new VoidInitializer(loc); | |
| 2372 } | |
| 2373 goto Lexpression; | |
| 2374 | |
| 2375 default: | |
| 2376 Lexpression: | |
| 2377 e = parseAssignExp(); | |
| 2378 ie = new ExpInitializer(loc, e); | |
| 2379 return ie; | |
| 2380 } | |
| 2381 } | |
| 2382 | |
| 2383 | |
| 2384 /***************************************** | |
| 2385 * Input: | |
| 2386 * flags PSxxxx | |
| 2387 */ | |
| 2388 | |
| 2389 Statement *Parser::parseStatement(int flags) | |
| 2390 { Statement *s; | |
| 2391 Token *t; | |
| 2392 Condition *condition; | |
| 2393 Statement *ifbody; | |
| 2394 Statement *elsebody; | |
| 2395 Loc loc = this->loc; | |
| 2396 | |
| 2397 //printf("parseStatement()\n"); | |
| 2398 | |
| 2399 if (flags & PScurly && token.value != TOKlcurly) | |
| 2400 error("statement expected to be { }, not %s", token.toChars()); | |
| 2401 | |
| 2402 switch (token.value) | |
| 2403 { | |
| 2404 case TOKidentifier: | |
| 2405 // Need to look ahead to see if it is a declaration, label, or expression | |
| 2406 t = peek(&token); | |
| 2407 if (t->value == TOKcolon) | |
| 2408 { // It's a label | |
| 2409 Identifier *ident; | |
| 2410 | |
| 2411 ident = token.ident; | |
| 2412 nextToken(); | |
| 2413 nextToken(); | |
| 2414 s = parseStatement(PSsemi); | |
| 2415 s = new LabelStatement(loc, ident, s); | |
| 2416 break; | |
| 2417 } | |
| 2418 // fallthrough to TOKdot | |
| 2419 case TOKdot: | |
| 2420 case TOKtypeof: | |
| 2421 if (isDeclaration(&token, 2, TOKreserved, NULL)) | |
| 2422 goto Ldeclaration; | |
| 2423 else | |
| 2424 goto Lexp; | |
| 2425 break; | |
| 2426 | |
| 2427 case TOKassert: | |
| 2428 case TOKthis: | |
| 2429 case TOKsuper: | |
| 2430 case TOKint32v: | |
| 2431 case TOKuns32v: | |
| 2432 case TOKint64v: | |
| 2433 case TOKuns64v: | |
| 2434 case TOKfloat32v: | |
| 2435 case TOKfloat64v: | |
| 2436 case TOKfloat80v: | |
| 2437 case TOKimaginary32v: | |
| 2438 case TOKimaginary64v: | |
| 2439 case TOKimaginary80v: | |
| 2440 case TOKcharv: | |
| 2441 case TOKwcharv: | |
| 2442 case TOKdcharv: | |
| 2443 case TOKnull: | |
| 2444 case TOKtrue: | |
| 2445 case TOKfalse: | |
| 2446 case TOKstring: | |
| 2447 case TOKlparen: | |
| 2448 case TOKcast: | |
| 2449 case TOKmul: | |
| 2450 case TOKmin: | |
| 2451 case TOKadd: | |
| 2452 case TOKplusplus: | |
| 2453 case TOKminusminus: | |
| 2454 case TOKnew: | |
| 2455 case TOKdelete: | |
| 2456 case TOKdelegate: | |
| 2457 case TOKfunction: | |
| 2458 case TOKtypeid: | |
| 2459 case TOKis: | |
| 2460 case TOKlbracket: | |
| 2461 Lexp: | |
| 2462 { Expression *exp; | |
| 2463 | |
| 2464 exp = parseExpression(); | |
| 2465 check(TOKsemicolon, "statement"); | |
| 2466 s = new ExpStatement(loc, exp); | |
| 2467 break; | |
| 2468 } | |
| 2469 | |
| 2470 case TOKstatic: | |
| 2471 { // Look ahead to see if it's static assert() or static if() | |
| 2472 Token *t; | |
| 2473 | |
| 2474 t = peek(&token); | |
| 2475 if (t->value == TOKassert) | |
| 2476 { | |
| 2477 nextToken(); | |
| 2478 s = new StaticAssertStatement(parseStaticAssert()); | |
| 2479 break; | |
| 2480 } | |
| 2481 if (t->value == TOKif) | |
| 2482 { | |
| 2483 nextToken(); | |
| 2484 condition = parseStaticIfCondition(); | |
| 2485 goto Lcondition; | |
| 2486 } | |
| 2487 goto Ldeclaration; | |
| 2488 } | |
| 2489 | |
| 2490 CASE_BASIC_TYPES: | |
| 2491 case TOKtypedef: | |
| 2492 case TOKalias: | |
| 2493 case TOKconst: | |
| 2494 case TOKauto: | |
| 2495 case TOKextern: | |
| 2496 case TOKfinal: | |
| 2497 case TOKinvariant: | |
| 2498 // case TOKtypeof: | |
| 2499 Ldeclaration: | |
| 2500 { Array *a; | |
| 2501 | |
| 2502 a = parseDeclarations(); | |
| 2503 if (a->dim > 1) | |
| 2504 { | |
| 2505 Statements *as = new Statements(); | |
| 2506 as->reserve(a->dim); | |
| 2507 for (int i = 0; i < a->dim; i++) | |
| 2508 { | |
| 2509 Dsymbol *d = (Dsymbol *)a->data[i]; | |
| 2510 s = new DeclarationStatement(loc, d); | |
| 2511 as->push(s); | |
| 2512 } | |
| 2513 s = new CompoundStatement(loc, as); | |
| 2514 } | |
| 2515 else if (a->dim == 1) | |
| 2516 { | |
| 2517 Dsymbol *d = (Dsymbol *)a->data[0]; | |
| 2518 s = new DeclarationStatement(loc, d); | |
| 2519 } | |
| 2520 else | |
| 2521 assert(0); | |
| 2522 if (flags & PSscope) | |
| 2523 s = new ScopeStatement(loc, s); | |
| 2524 break; | |
| 2525 } | |
| 2526 | |
| 2527 case TOKstruct: | |
| 2528 case TOKunion: | |
| 2529 case TOKclass: | |
| 2530 case TOKinterface: | |
| 2531 { Dsymbol *d; | |
| 2532 | |
| 2533 d = parseAggregate(); | |
| 2534 s = new DeclarationStatement(loc, d); | |
| 2535 break; | |
| 2536 } | |
| 2537 | |
| 2538 case TOKenum: | |
| 2539 { Dsymbol *d; | |
| 2540 | |
| 2541 d = parseEnum(); | |
| 2542 s = new DeclarationStatement(loc, d); | |
| 2543 break; | |
| 2544 } | |
| 2545 | |
| 2546 case TOKmixin: | |
| 2547 { t = peek(&token); | |
| 2548 if (t->value == TOKlparen) | |
| 2549 { // mixin(string) | |
| 2550 nextToken(); | |
| 2551 check(TOKlparen, "mixin"); | |
| 2552 Expression *e = parseAssignExp(); | |
| 2553 check(TOKrparen); | |
| 2554 check(TOKsemicolon); | |
| 2555 s = new CompileStatement(loc, e); | |
| 2556 break; | |
| 2557 } | |
| 2558 Dsymbol *d = parseMixin(); | |
| 2559 s = new DeclarationStatement(loc, d); | |
| 2560 break; | |
| 2561 } | |
| 2562 | |
| 2563 case TOKlcurly: | |
| 2564 { Statements *statements; | |
| 2565 | |
| 2566 nextToken(); | |
| 2567 statements = new Statements(); | |
| 2568 while (token.value != TOKrcurly) | |
| 2569 { | |
| 2570 statements->push(parseStatement(PSsemi | PScurlyscope)); | |
| 2571 } | |
| 2572 endloc = this->loc; | |
| 2573 s = new CompoundStatement(loc, statements); | |
| 2574 if (flags & (PSscope | PScurlyscope)) | |
| 2575 s = new ScopeStatement(loc, s); | |
| 2576 nextToken(); | |
| 2577 break; | |
| 2578 } | |
| 2579 | |
| 2580 case TOKwhile: | |
| 2581 { Expression *condition; | |
| 2582 Statement *body; | |
| 2583 | |
| 2584 nextToken(); | |
| 2585 check(TOKlparen); | |
| 2586 condition = parseExpression(); | |
| 2587 check(TOKrparen); | |
| 2588 body = parseStatement(PSscope); | |
| 2589 s = new WhileStatement(loc, condition, body); | |
| 2590 break; | |
| 2591 } | |
| 2592 | |
| 2593 case TOKsemicolon: | |
| 2594 if (!(flags & PSsemi)) | |
| 2595 error("use '{ }' for an empty statement, not a ';'"); | |
| 2596 nextToken(); | |
| 2597 s = new ExpStatement(loc, NULL); | |
| 2598 break; | |
| 2599 | |
| 2600 case TOKdo: | |
| 2601 { Statement *body; | |
| 2602 Expression *condition; | |
| 2603 | |
| 2604 nextToken(); | |
| 2605 body = parseStatement(PSscope); | |
| 2606 check(TOKwhile); | |
| 2607 check(TOKlparen); | |
| 2608 condition = parseExpression(); | |
| 2609 check(TOKrparen); | |
| 2610 s = new DoStatement(loc, body, condition); | |
| 2611 break; | |
| 2612 } | |
| 2613 | |
| 2614 case TOKfor: | |
| 2615 { | |
| 2616 Statement *init; | |
| 2617 Expression *condition; | |
| 2618 Expression *increment; | |
| 2619 Statement *body; | |
| 2620 | |
| 2621 nextToken(); | |
| 2622 check(TOKlparen); | |
| 2623 if (token.value == TOKsemicolon) | |
| 2624 { init = NULL; | |
| 2625 nextToken(); | |
| 2626 } | |
| 2627 else | |
| 2628 { init = parseStatement(0); | |
| 2629 } | |
| 2630 if (token.value == TOKsemicolon) | |
| 2631 { | |
| 2632 condition = NULL; | |
| 2633 nextToken(); | |
| 2634 } | |
| 2635 else | |
| 2636 { | |
| 2637 condition = parseExpression(); | |
| 2638 check(TOKsemicolon, "for condition"); | |
| 2639 } | |
| 2640 if (token.value == TOKrparen) | |
| 2641 { increment = NULL; | |
| 2642 nextToken(); | |
| 2643 } | |
| 2644 else | |
| 2645 { increment = parseExpression(); | |
| 2646 check(TOKrparen); | |
| 2647 } | |
| 2648 body = parseStatement(PSscope); | |
| 2649 s = new ForStatement(loc, init, condition, increment, body); | |
| 2650 if (init) | |
| 2651 s = new ScopeStatement(loc, s); | |
| 2652 break; | |
| 2653 } | |
| 2654 | |
| 2655 case TOKforeach: | |
| 2656 case TOKforeach_reverse: | |
| 2657 { | |
| 2658 enum TOK op = token.value; | |
| 2659 Arguments *arguments; | |
| 2660 | |
| 2661 Statement *d; | |
| 2662 Statement *body; | |
| 2663 Expression *aggr; | |
| 2664 | |
| 2665 nextToken(); | |
| 2666 check(TOKlparen); | |
| 2667 | |
| 2668 arguments = new Arguments(); | |
| 2669 | |
| 2670 while (1) | |
| 2671 { | |
| 2672 Type *tb; | |
| 2673 Identifier *ai = NULL; | |
| 2674 Type *at; | |
| 2675 unsigned storageClass; | |
| 2676 Argument *a; | |
| 2677 | |
| 2678 storageClass = STCin; | |
| 2679 if (token.value == TOKinout || token.value == TOKref) | |
| 2680 { storageClass = STCref; | |
| 2681 nextToken(); | |
| 2682 } | |
| 2683 if (token.value == TOKidentifier) | |
| 2684 { | |
| 2685 Token *t = peek(&token); | |
| 2686 if (t->value == TOKcomma || t->value == TOKsemicolon) | |
| 2687 { ai = token.ident; | |
| 2688 at = NULL; // infer argument type | |
| 2689 nextToken(); | |
| 2690 goto Larg; | |
| 2691 } | |
| 2692 } | |
| 2693 tb = parseBasicType(); | |
| 2694 at = parseDeclarator(tb, &ai); | |
| 2695 if (!ai) | |
| 2696 error("no identifier for declarator %s", at->toChars()); | |
| 2697 Larg: | |
| 2698 a = new Argument(storageClass, at, ai, NULL); | |
| 2699 arguments->push(a); | |
| 2700 if (token.value == TOKcomma) | |
| 2701 { nextToken(); | |
| 2702 continue; | |
| 2703 } | |
| 2704 break; | |
| 2705 } | |
| 2706 check(TOKsemicolon); | |
| 2707 | |
| 2708 aggr = parseExpression(); | |
| 2709 check(TOKrparen); | |
| 2710 body = parseStatement(0); | |
| 2711 s = new ForeachStatement(loc, op, arguments, aggr, body); | |
| 2712 break; | |
| 2713 } | |
| 2714 | |
| 2715 case TOKif: | |
| 2716 { Argument *arg = NULL; | |
| 2717 Expression *condition; | |
| 2718 Statement *ifbody; | |
| 2719 Statement *elsebody; | |
| 2720 | |
| 2721 nextToken(); | |
| 2722 check(TOKlparen); | |
| 2723 | |
| 2724 if (token.value == TOKauto) | |
| 2725 { | |
| 2726 nextToken(); | |
| 2727 if (token.value == TOKidentifier) | |
| 2728 { | |
| 2729 Token *t = peek(&token); | |
| 2730 if (t->value == TOKassign) | |
| 2731 { | |
| 2732 arg = new Argument(STCin, NULL, token.ident, NULL); | |
| 2733 nextToken(); | |
| 2734 nextToken(); | |
| 2735 } | |
| 2736 else | |
| 2737 { error("= expected following auto identifier"); | |
| 2738 goto Lerror; | |
| 2739 } | |
| 2740 } | |
| 2741 else | |
| 2742 { error("identifier expected following auto"); | |
| 2743 goto Lerror; | |
| 2744 } | |
| 2745 } | |
| 2746 else if (isDeclaration(&token, 2, TOKassign, NULL)) | |
| 2747 { | |
| 2748 Type *tb; | |
| 2749 Type *at; | |
| 2750 Identifier *ai; | |
| 2751 | |
| 2752 tb = parseBasicType(); | |
| 2753 at = parseDeclarator(tb, &ai); | |
| 2754 check(TOKassign); | |
| 2755 arg = new Argument(STCin, at, ai, NULL); | |
| 2756 } | |
| 2757 | |
| 2758 // Check for " ident;" | |
| 2759 else if (token.value == TOKidentifier) | |
| 2760 { | |
| 2761 Token *t = peek(&token); | |
| 2762 if (t->value == TOKcomma || t->value == TOKsemicolon) | |
| 2763 { | |
| 2764 arg = new Argument(STCin, NULL, token.ident, NULL); | |
| 2765 nextToken(); | |
| 2766 nextToken(); | |
| 2767 if (1 || !global.params.useDeprecated) | |
| 2768 error("if (v; e) is deprecated, use if (auto v = e)"); | |
| 2769 } | |
| 2770 } | |
| 2771 | |
| 2772 condition = parseExpression(); | |
| 2773 check(TOKrparen); | |
| 2774 ifbody = parseStatement(PSscope); | |
| 2775 if (token.value == TOKelse) | |
| 2776 { | |
| 2777 nextToken(); | |
| 2778 elsebody = parseStatement(PSscope); | |
| 2779 } | |
| 2780 else | |
| 2781 elsebody = NULL; | |
| 2782 s = new IfStatement(loc, arg, condition, ifbody, elsebody); | |
| 2783 break; | |
| 2784 } | |
| 2785 | |
| 2786 case TOKscope: | |
| 2787 if (peek(&token)->value != TOKlparen) | |
| 2788 goto Ldeclaration; // scope used as storage class | |
| 2789 nextToken(); | |
| 2790 check(TOKlparen); | |
| 2791 if (token.value != TOKidentifier) | |
| 2792 { error("scope identifier expected"); | |
| 2793 goto Lerror; | |
| 2794 } | |
| 2795 else | |
| 2796 { TOK t = TOKon_scope_exit; | |
| 2797 Identifier *id = token.ident; | |
| 2798 | |
| 2799 if (id == Id::exit) | |
| 2800 t = TOKon_scope_exit; | |
| 2801 else if (id == Id::failure) | |
| 2802 t = TOKon_scope_failure; | |
| 2803 else if (id == Id::success) | |
| 2804 t = TOKon_scope_success; | |
| 2805 else | |
| 2806 error("valid scope identifiers are exit, failure, or success, not %s", id->toChars()); | |
| 2807 nextToken(); | |
| 2808 check(TOKrparen); | |
| 2809 Statement *st = parseStatement(PScurlyscope); | |
| 2810 s = new OnScopeStatement(loc, t, st); | |
| 2811 break; | |
| 2812 } | |
| 2813 | |
| 2814 case TOKdebug: | |
| 2815 nextToken(); | |
| 2816 condition = parseDebugCondition(); | |
| 2817 goto Lcondition; | |
| 2818 | |
| 2819 case TOKversion: | |
| 2820 nextToken(); | |
| 2821 condition = parseVersionCondition(); | |
| 2822 goto Lcondition; | |
| 2823 | |
| 2824 Lcondition: | |
| 2825 ifbody = parseStatement(0 /*PSsemi*/); | |
| 2826 elsebody = NULL; | |
| 2827 if (token.value == TOKelse) | |
| 2828 { | |
| 2829 nextToken(); | |
| 2830 elsebody = parseStatement(0 /*PSsemi*/); | |
| 2831 } | |
| 2832 s = new ConditionalStatement(loc, condition, ifbody, elsebody); | |
| 2833 break; | |
| 2834 | |
| 2835 case TOKpragma: | |
| 2836 { Identifier *ident; | |
| 2837 Expressions *args = NULL; | |
| 2838 Statement *body; | |
| 2839 | |
| 2840 nextToken(); | |
| 2841 check(TOKlparen); | |
| 2842 if (token.value != TOKidentifier) | |
| 2843 { error("pragma(identifier expected"); | |
| 2844 goto Lerror; | |
| 2845 } | |
| 2846 ident = token.ident; | |
| 2847 nextToken(); | |
| 2848 if (token.value == TOKcomma) | |
| 2849 args = parseArguments(); // pragma(identifier, args...); | |
| 2850 else | |
| 2851 check(TOKrparen); // pragma(identifier); | |
| 2852 if (token.value == TOKsemicolon) | |
| 2853 { nextToken(); | |
| 2854 body = NULL; | |
| 2855 } | |
| 2856 else | |
| 2857 body = parseStatement(PSsemi); | |
| 2858 s = new PragmaStatement(loc, ident, args, body); | |
| 2859 break; | |
| 2860 } | |
| 2861 | |
| 2862 case TOKswitch: | |
| 2863 { Expression *condition; | |
| 2864 Statement *body; | |
| 2865 | |
| 2866 nextToken(); | |
| 2867 check(TOKlparen); | |
| 2868 condition = parseExpression(); | |
| 2869 check(TOKrparen); | |
| 2870 body = parseStatement(PSscope); | |
| 2871 s = new SwitchStatement(loc, condition, body); | |
| 2872 break; | |
| 2873 } | |
| 2874 | |
| 2875 case TOKcase: | |
| 2876 { Expression *exp; | |
| 2877 Statements *statements; | |
| 2878 Array cases; // array of Expression's | |
| 2879 | |
| 2880 while (1) | |
| 2881 { | |
| 2882 nextToken(); | |
| 2883 exp = parseAssignExp(); | |
| 2884 cases.push(exp); | |
| 2885 if (token.value != TOKcomma) | |
| 2886 break; | |
| 2887 } | |
| 2888 check(TOKcolon); | |
| 2889 | |
| 2890 statements = new Statements(); | |
| 2891 while (token.value != TOKcase && | |
| 2892 token.value != TOKdefault && | |
| 2893 token.value != TOKrcurly) | |
| 2894 { | |
| 2895 statements->push(parseStatement(PSsemi | PScurlyscope)); | |
| 2896 } | |
| 2897 s = new CompoundStatement(loc, statements); | |
| 2898 s = new ScopeStatement(loc, s); | |
| 2899 | |
| 2900 // Keep cases in order by building the case statements backwards | |
| 2901 for (int i = cases.dim; i; i--) | |
| 2902 { | |
| 2903 exp = (Expression *)cases.data[i - 1]; | |
| 2904 s = new CaseStatement(loc, exp, s); | |
| 2905 } | |
| 2906 break; | |
| 2907 } | |
| 2908 | |
| 2909 case TOKdefault: | |
| 2910 { | |
| 2911 Statements *statements; | |
| 2912 | |
| 2913 nextToken(); | |
| 2914 check(TOKcolon); | |
| 2915 | |
| 2916 statements = new Statements(); | |
| 2917 while (token.value != TOKcase && | |
| 2918 token.value != TOKdefault && | |
| 2919 token.value != TOKrcurly) | |
| 2920 { | |
| 2921 statements->push(parseStatement(PSsemi | PScurlyscope)); | |
| 2922 } | |
| 2923 s = new CompoundStatement(loc, statements); | |
| 2924 s = new ScopeStatement(loc, s); | |
| 2925 s = new DefaultStatement(loc, s); | |
| 2926 break; | |
| 2927 } | |
| 2928 | |
| 2929 case TOKreturn: | |
| 2930 { Expression *exp; | |
| 2931 | |
| 2932 nextToken(); | |
| 2933 if (token.value == TOKsemicolon) | |
| 2934 exp = NULL; | |
| 2935 else | |
| 2936 exp = parseExpression(); | |
| 2937 check(TOKsemicolon, "return statement"); | |
| 2938 s = new ReturnStatement(loc, exp); | |
| 2939 break; | |
| 2940 } | |
| 2941 | |
| 2942 case TOKbreak: | |
| 2943 { Identifier *ident; | |
| 2944 | |
| 2945 nextToken(); | |
| 2946 if (token.value == TOKidentifier) | |
| 2947 { ident = token.ident; | |
| 2948 nextToken(); | |
| 2949 } | |
| 2950 else | |
| 2951 ident = NULL; | |
| 2952 check(TOKsemicolon, "break statement"); | |
| 2953 s = new BreakStatement(loc, ident); | |
| 2954 break; | |
| 2955 } | |
| 2956 | |
| 2957 case TOKcontinue: | |
| 2958 { Identifier *ident; | |
| 2959 | |
| 2960 nextToken(); | |
| 2961 if (token.value == TOKidentifier) | |
| 2962 { ident = token.ident; | |
| 2963 nextToken(); | |
| 2964 } | |
| 2965 else | |
| 2966 ident = NULL; | |
| 2967 check(TOKsemicolon, "continue statement"); | |
| 2968 s = new ContinueStatement(loc, ident); | |
| 2969 break; | |
| 2970 } | |
| 2971 | |
| 2972 case TOKgoto: | |
| 2973 { Identifier *ident; | |
| 2974 | |
| 2975 nextToken(); | |
| 2976 if (token.value == TOKdefault) | |
| 2977 { | |
| 2978 nextToken(); | |
| 2979 s = new GotoDefaultStatement(loc); | |
| 2980 } | |
| 2981 else if (token.value == TOKcase) | |
| 2982 { | |
| 2983 Expression *exp = NULL; | |
| 2984 | |
| 2985 nextToken(); | |
| 2986 if (token.value != TOKsemicolon) | |
| 2987 exp = parseExpression(); | |
| 2988 s = new GotoCaseStatement(loc, exp); | |
| 2989 } | |
| 2990 else | |
| 2991 { | |
| 2992 if (token.value != TOKidentifier) | |
| 2993 { error("Identifier expected following goto"); | |
| 2994 ident = NULL; | |
| 2995 } | |
| 2996 else | |
| 2997 { ident = token.ident; | |
| 2998 nextToken(); | |
| 2999 } | |
| 3000 s = new GotoStatement(loc, ident); | |
| 3001 } | |
| 3002 check(TOKsemicolon, "goto statement"); | |
| 3003 break; | |
| 3004 } | |
| 3005 | |
| 3006 case TOKsynchronized: | |
| 3007 { Expression *exp; | |
| 3008 Statement *body; | |
| 3009 | |
| 3010 nextToken(); | |
| 3011 if (token.value == TOKlparen) | |
| 3012 { | |
| 3013 nextToken(); | |
| 3014 exp = parseExpression(); | |
| 3015 check(TOKrparen); | |
| 3016 } | |
| 3017 else | |
| 3018 exp = NULL; | |
| 3019 body = parseStatement(PSscope); | |
| 3020 s = new SynchronizedStatement(loc, exp, body); | |
| 3021 break; | |
| 3022 } | |
| 3023 | |
| 3024 case TOKwith: | |
| 3025 { Expression *exp; | |
| 3026 Statement *body; | |
| 3027 | |
| 3028 nextToken(); | |
| 3029 check(TOKlparen); | |
| 3030 exp = parseExpression(); | |
| 3031 check(TOKrparen); | |
| 3032 body = parseStatement(PSscope); | |
| 3033 s = new WithStatement(loc, exp, body); | |
| 3034 break; | |
| 3035 } | |
| 3036 | |
| 3037 case TOKtry: | |
| 3038 { Statement *body; | |
| 3039 Array *catches = NULL; | |
| 3040 Statement *finalbody = NULL; | |
| 3041 | |
| 3042 nextToken(); | |
| 3043 body = parseStatement(PSscope); | |
| 3044 while (token.value == TOKcatch) | |
| 3045 { | |
| 3046 Statement *handler; | |
| 3047 Catch *c; | |
| 3048 Type *t; | |
| 3049 Identifier *id; | |
| 3050 Loc loc = this->loc; | |
| 3051 | |
| 3052 nextToken(); | |
| 3053 if (token.value == TOKlcurly) | |
| 3054 { | |
| 3055 t = NULL; | |
| 3056 id = NULL; | |
| 3057 } | |
| 3058 else | |
| 3059 { | |
| 3060 check(TOKlparen); | |
| 3061 t = parseBasicType(); | |
| 3062 id = NULL; | |
| 3063 t = parseDeclarator(t, &id); | |
| 3064 check(TOKrparen); | |
| 3065 } | |
| 3066 handler = parseStatement(0); | |
| 3067 c = new Catch(loc, t, id, handler); | |
| 3068 if (!catches) | |
| 3069 catches = new Array(); | |
| 3070 catches->push(c); | |
| 3071 } | |
| 3072 | |
| 3073 if (token.value == TOKfinally) | |
| 3074 { nextToken(); | |
| 3075 finalbody = parseStatement(0); | |
| 3076 } | |
| 3077 | |
| 3078 s = body; | |
| 3079 if (!catches && !finalbody) | |
| 3080 error("catch or finally expected following try"); | |
| 3081 else | |
| 3082 { if (catches) | |
| 3083 s = new TryCatchStatement(loc, body, catches); | |
| 3084 if (finalbody) | |
| 3085 s = new TryFinallyStatement(loc, s, finalbody); | |
| 3086 } | |
| 3087 break; | |
| 3088 } | |
| 3089 | |
| 3090 case TOKthrow: | |
| 3091 { Expression *exp; | |
| 3092 | |
| 3093 nextToken(); | |
| 3094 exp = parseExpression(); | |
| 3095 check(TOKsemicolon, "throw statement"); | |
| 3096 s = new ThrowStatement(loc, exp); | |
| 3097 break; | |
| 3098 } | |
| 3099 | |
| 3100 case TOKvolatile: | |
| 3101 nextToken(); | |
| 3102 s = parseStatement(PSsemi | PScurlyscope); | |
| 3103 s = new VolatileStatement(loc, s); | |
| 3104 break; | |
| 3105 | |
| 3106 case TOKasm: | |
| 3107 { Statements *statements; | |
| 3108 Identifier *label; | |
| 3109 Loc labelloc; | |
| 3110 Token *toklist; | |
| 3111 Token **ptoklist; | |
| 3112 | |
| 3113 // Parse the asm block into a sequence of AsmStatements, | |
| 3114 // each AsmStatement is one instruction. | |
| 3115 // Separate out labels. | |
| 3116 // Defer parsing of AsmStatements until semantic processing. | |
| 3117 | |
| 3118 nextToken(); | |
| 3119 check(TOKlcurly); | |
| 3120 toklist = NULL; | |
| 3121 ptoklist = &toklist; | |
| 3122 label = NULL; | |
| 3123 statements = new Statements(); | |
| 3124 while (1) | |
| 3125 { | |
| 3126 switch (token.value) | |
| 3127 { | |
| 3128 case TOKidentifier: | |
| 3129 if (!toklist) | |
| 3130 { | |
| 3131 // Look ahead to see if it is a label | |
| 3132 t = peek(&token); | |
| 3133 if (t->value == TOKcolon) | |
| 3134 { // It's a label | |
| 3135 label = token.ident; | |
| 3136 labelloc = this->loc; | |
| 3137 nextToken(); | |
| 3138 nextToken(); | |
| 3139 continue; | |
| 3140 } | |
| 3141 } | |
| 3142 goto Ldefault; | |
| 3143 | |
| 3144 case TOKrcurly: | |
| 3145 if (toklist || label) | |
| 3146 { | |
| 3147 error("asm statements must end in ';'"); | |
| 3148 } | |
| 3149 break; | |
| 3150 | |
| 3151 case TOKsemicolon: | |
| 3152 s = NULL; | |
| 3153 if (toklist || label) | |
| 3154 { // Create AsmStatement from list of tokens we've saved | |
| 3155 s = new AsmStatement(this->loc, toklist); | |
| 3156 toklist = NULL; | |
| 3157 ptoklist = &toklist; | |
| 3158 if (label) | |
| 3159 { s = new LabelStatement(labelloc, label, s); | |
| 3160 label = NULL; | |
| 3161 } | |
| 3162 statements->push(s); | |
| 3163 } | |
| 3164 nextToken(); | |
| 3165 continue; | |
| 3166 | |
| 3167 case TOKeof: | |
| 3168 /* { */ | |
| 3169 error("matching '}' expected, not end of file"); | |
| 3170 break; | |
| 3171 | |
| 3172 default: | |
| 3173 Ldefault: | |
| 3174 *ptoklist = new Token(); | |
| 3175 memcpy(*ptoklist, &token, sizeof(Token)); | |
| 3176 ptoklist = &(*ptoklist)->next; | |
| 3177 *ptoklist = NULL; | |
| 3178 | |
| 3179 nextToken(); | |
| 3180 continue; | |
| 3181 } | |
| 3182 break; | |
| 3183 } | |
| 3184 s = new CompoundStatement(loc, statements); | |
| 3185 nextToken(); | |
| 3186 break; | |
| 3187 } | |
| 3188 | |
| 3189 default: | |
| 3190 error("found '%s' instead of statement", token.toChars()); | |
| 3191 goto Lerror; | |
| 3192 | |
| 3193 Lerror: | |
| 3194 while (token.value != TOKrcurly && | |
| 3195 token.value != TOKsemicolon && | |
| 3196 token.value != TOKeof) | |
| 3197 nextToken(); | |
| 3198 if (token.value == TOKsemicolon) | |
| 3199 nextToken(); | |
| 3200 s = NULL; | |
| 3201 break; | |
| 3202 } | |
| 3203 | |
| 3204 return s; | |
| 3205 } | |
| 3206 | |
| 3207 void Parser::check(enum TOK value) | |
| 3208 { | |
| 3209 check(loc, value); | |
| 3210 } | |
| 3211 | |
| 3212 void Parser::check(Loc loc, enum TOK value) | |
| 3213 { | |
| 3214 if (token.value != value) | |
| 3215 error(loc, "found '%s' when expecting '%s'", token.toChars(), Token::toChars(value)); | |
| 3216 nextToken(); | |
| 3217 } | |
| 3218 | |
| 3219 void Parser::check(enum TOK value, char *string) | |
| 3220 { | |
| 3221 if (token.value != value) | |
| 3222 error("found '%s' when expecting '%s' following '%s'", | |
| 3223 token.toChars(), Token::toChars(value), string); | |
| 3224 nextToken(); | |
| 3225 } | |
| 3226 | |
| 3227 /************************************ | |
| 3228 * Determine if the scanner is sitting on the start of a declaration. | |
| 3229 * Input: | |
| 3230 * needId 0 no identifier | |
| 3231 * 1 identifier optional | |
| 3232 * 2 must have identifier | |
| 3233 */ | |
| 3234 | |
| 3235 int Parser::isDeclaration(Token *t, int needId, enum TOK endtok, Token **pt) | |
| 3236 { | |
| 3237 int haveId = 0; | |
| 3238 | |
| 3239 if (!isBasicType(&t)) | |
| 3240 return FALSE; | |
| 3241 if (!isDeclarator(&t, &haveId, endtok)) | |
| 3242 return FALSE; | |
| 3243 if ( needId == 1 || | |
| 3244 (needId == 0 && !haveId) || | |
| 3245 (needId == 2 && haveId)) | |
| 3246 { if (pt) | |
| 3247 *pt = t; | |
| 3248 return TRUE; | |
| 3249 } | |
| 3250 else | |
| 3251 return FALSE; | |
| 3252 } | |
| 3253 | |
| 3254 int Parser::isBasicType(Token **pt) | |
| 3255 { | |
| 3256 // This code parallels parseBasicType() | |
| 3257 Token *t = *pt; | |
| 3258 Token *t2; | |
| 3259 int parens; | |
| 3260 | |
| 3261 switch (t->value) | |
| 3262 { | |
| 3263 CASE_BASIC_TYPES: | |
| 3264 t = peek(t); | |
| 3265 break; | |
| 3266 | |
| 3267 case TOKidentifier: | |
| 3268 t = peek(t); | |
| 3269 if (t->value == TOKnot) | |
| 3270 { | |
| 3271 goto L4; | |
| 3272 } | |
| 3273 goto L3; | |
| 3274 while (1) | |
| 3275 { | |
| 3276 L2: | |
| 3277 t = peek(t); | |
| 3278 L3: | |
| 3279 if (t->value == TOKdot) | |
| 3280 { | |
| 3281 Ldot: | |
| 3282 t = peek(t); | |
| 3283 if (t->value != TOKidentifier) | |
| 3284 goto Lfalse; | |
| 3285 t = peek(t); | |
| 3286 if (t->value != TOKnot) | |
| 3287 goto L3; | |
| 3288 L4: | |
| 3289 t = peek(t); | |
| 3290 if (t->value != TOKlparen) | |
| 3291 goto Lfalse; | |
| 3292 if (!skipParens(t, &t)) | |
| 3293 goto Lfalse; | |
| 3294 } | |
| 3295 else | |
| 3296 break; | |
| 3297 } | |
| 3298 break; | |
| 3299 | |
| 3300 case TOKdot: | |
| 3301 goto Ldot; | |
| 3302 | |
| 3303 case TOKtypeof: | |
| 3304 /* typeof(exp).identifier... | |
| 3305 */ | |
| 3306 t = peek(t); | |
| 3307 if (t->value != TOKlparen) | |
| 3308 goto Lfalse; | |
| 3309 if (!skipParens(t, &t)) | |
| 3310 goto Lfalse; | |
| 3311 goto L2; | |
| 3312 | |
| 3313 default: | |
| 3314 goto Lfalse; | |
| 3315 } | |
| 3316 *pt = t; | |
| 3317 return TRUE; | |
| 3318 | |
| 3319 Lfalse: | |
| 3320 return FALSE; | |
| 3321 } | |
| 3322 | |
| 3323 int Parser::isDeclarator(Token **pt, int *haveId, enum TOK endtok) | |
| 3324 { // This code parallels parseDeclarator() | |
| 3325 Token *t = *pt; | |
| 3326 int parens; | |
| 3327 | |
| 3328 //printf("Parser::isDeclarator()\n"); | |
| 3329 //t->print(); | |
| 3330 if (t->value == TOKassign) | |
| 3331 return FALSE; | |
| 3332 | |
| 3333 while (1) | |
| 3334 { | |
| 3335 parens = FALSE; | |
| 3336 switch (t->value) | |
| 3337 { | |
| 3338 case TOKmul: | |
| 3339 case TOKand: | |
| 3340 t = peek(t); | |
| 3341 continue; | |
| 3342 | |
| 3343 case TOKlbracket: | |
| 3344 t = peek(t); | |
| 3345 if (t->value == TOKrbracket) | |
| 3346 { | |
| 3347 t = peek(t); | |
| 3348 } | |
| 3349 else if (isDeclaration(t, 0, TOKrbracket, &t)) | |
| 3350 { // It's an associative array declaration | |
| 3351 t = peek(t); | |
| 3352 } | |
| 3353 else | |
| 3354 { | |
| 3355 // [ expression ] | |
| 3356 // [ expression .. expression ] | |
| 3357 if (!isExpression(&t)) | |
| 3358 return FALSE; | |
| 3359 if (t->value == TOKslice) | |
| 3360 { t = peek(t); | |
| 3361 if (!isExpression(&t)) | |
| 3362 return FALSE; | |
| 3363 } | |
| 3364 if (t->value != TOKrbracket) | |
| 3365 return FALSE; | |
| 3366 t = peek(t); | |
| 3367 } | |
| 3368 continue; | |
| 3369 | |
| 3370 case TOKidentifier: | |
| 3371 if (*haveId) | |
| 3372 return FALSE; | |
| 3373 *haveId = TRUE; | |
| 3374 t = peek(t); | |
| 3375 break; | |
| 3376 | |
| 3377 case TOKlparen: | |
| 3378 t = peek(t); | |
| 3379 | |
| 3380 if (t->value == TOKrparen) | |
| 3381 return FALSE; // () is not a declarator | |
| 3382 | |
| 3383 /* Regard ( identifier ) as not a declarator | |
| 3384 * BUG: what about ( *identifier ) in | |
| 3385 * f(*p)(x); | |
| 3386 * where f is a class instance with overloaded () ? | |
| 3387 * Should we just disallow C-style function pointer declarations? | |
| 3388 */ | |
| 3389 if (t->value == TOKidentifier) | |
| 3390 { Token *t2 = peek(t); | |
| 3391 if (t2->value == TOKrparen) | |
| 3392 return FALSE; | |
| 3393 } | |
| 3394 | |
| 3395 | |
| 3396 if (!isDeclarator(&t, haveId, TOKrparen)) | |
| 3397 return FALSE; | |
| 3398 t = peek(t); | |
| 3399 parens = TRUE; | |
| 3400 break; | |
| 3401 | |
| 3402 case TOKdelegate: | |
| 3403 case TOKfunction: | |
| 3404 t = peek(t); | |
| 3405 if (!isParameters(&t)) | |
| 3406 return FALSE; | |
| 3407 continue; | |
| 3408 } | |
| 3409 break; | |
| 3410 } | |
| 3411 | |
| 3412 while (1) | |
| 3413 { | |
| 3414 switch (t->value) | |
| 3415 { | |
| 3416 #if CARRAYDECL | |
| 3417 case TOKlbracket: | |
| 3418 parens = FALSE; | |
| 3419 t = peek(t); | |
| 3420 if (t->value == TOKrbracket) | |
| 3421 { | |
| 3422 t = peek(t); | |
| 3423 } | |
| 3424 else if (isDeclaration(t, 0, TOKrbracket, &t)) | |
| 3425 { // It's an associative array declaration | |
| 3426 t = peek(t); | |
| 3427 } | |
| 3428 else | |
| 3429 { | |
| 3430 // [ expression ] | |
| 3431 if (!isExpression(&t)) | |
| 3432 return FALSE; | |
| 3433 if (t->value != TOKrbracket) | |
| 3434 return FALSE; | |
| 3435 t = peek(t); | |
| 3436 } | |
| 3437 continue; | |
| 3438 #endif | |
| 3439 | |
| 3440 case TOKlparen: | |
| 3441 parens = FALSE; | |
| 3442 if (!isParameters(&t)) | |
| 3443 return FALSE; | |
| 3444 continue; | |
| 3445 | |
| 3446 // Valid tokens that follow a declaration | |
| 3447 case TOKrparen: | |
| 3448 case TOKrbracket: | |
| 3449 case TOKassign: | |
| 3450 case TOKcomma: | |
| 3451 case TOKsemicolon: | |
| 3452 case TOKlcurly: | |
| 3453 case TOKin: | |
| 3454 // The !parens is to disallow unnecessary parentheses | |
| 3455 if (!parens && (endtok == TOKreserved || endtok == t->value)) | |
| 3456 { *pt = t; | |
| 3457 return TRUE; | |
| 3458 } | |
| 3459 return FALSE; | |
| 3460 | |
| 3461 default: | |
| 3462 return FALSE; | |
| 3463 } | |
| 3464 } | |
| 3465 } | |
| 3466 | |
| 3467 | |
| 3468 int Parser::isParameters(Token **pt) | |
| 3469 { // This code parallels parseParameters() | |
| 3470 Token *t = *pt; | |
| 3471 int tmp; | |
| 3472 | |
| 3473 //printf("isParameters()\n"); | |
| 3474 if (t->value != TOKlparen) | |
| 3475 return FALSE; | |
| 3476 | |
| 3477 t = peek(t); | |
| 3478 while (1) | |
| 3479 { | |
| 3480 switch (t->value) | |
| 3481 { | |
| 3482 case TOKrparen: | |
| 3483 break; | |
| 3484 | |
| 3485 case TOKdotdotdot: | |
| 3486 t = peek(t); | |
| 3487 break; | |
| 3488 | |
| 3489 case TOKin: | |
| 3490 case TOKout: | |
| 3491 case TOKinout: | |
| 3492 case TOKref: | |
| 3493 case TOKlazy: | |
| 3494 t = peek(t); | |
| 3495 default: | |
| 3496 if (!isBasicType(&t)) | |
| 3497 return FALSE; | |
| 3498 tmp = FALSE; | |
| 3499 if (t->value != TOKdotdotdot && | |
| 3500 !isDeclarator(&t, &tmp, TOKreserved)) | |
| 3501 return FALSE; | |
| 3502 if (t->value == TOKassign) | |
| 3503 { t = peek(t); | |
| 3504 if (!isExpression(&t)) | |
| 3505 return FALSE; | |
| 3506 } | |
| 3507 if (t->value == TOKdotdotdot) | |
| 3508 { | |
| 3509 t = peek(t); | |
| 3510 break; | |
| 3511 } | |
| 3512 if (t->value == TOKcomma) | |
| 3513 { t = peek(t); | |
| 3514 continue; | |
| 3515 } | |
| 3516 break; | |
| 3517 } | |
| 3518 break; | |
| 3519 } | |
| 3520 if (t->value != TOKrparen) | |
| 3521 return FALSE; | |
| 3522 t = peek(t); | |
| 3523 *pt = t; | |
| 3524 return TRUE; | |
| 3525 } | |
| 3526 | |
| 3527 int Parser::isExpression(Token **pt) | |
| 3528 { | |
| 3529 // This is supposed to determine if something is an expression. | |
| 3530 // What it actually does is scan until a closing right bracket | |
| 3531 // is found. | |
| 3532 | |
| 3533 Token *t = *pt; | |
| 3534 int brnest = 0; | |
| 3535 int panest = 0; | |
| 3536 | |
| 3537 for (;; t = peek(t)) | |
| 3538 { | |
| 3539 switch (t->value) | |
| 3540 { | |
| 3541 case TOKlbracket: | |
| 3542 brnest++; | |
| 3543 continue; | |
| 3544 | |
| 3545 case TOKrbracket: | |
| 3546 if (--brnest >= 0) | |
| 3547 continue; | |
| 3548 break; | |
| 3549 | |
| 3550 case TOKlparen: | |
| 3551 panest++; | |
| 3552 continue; | |
| 3553 | |
| 3554 case TOKcomma: | |
| 3555 if (brnest || panest) | |
| 3556 continue; | |
| 3557 break; | |
| 3558 | |
| 3559 case TOKrparen: | |
| 3560 if (--panest >= 0) | |
| 3561 continue; | |
| 3562 break; | |
| 3563 | |
| 3564 case TOKslice: | |
| 3565 if (brnest) | |
| 3566 continue; | |
| 3567 break; | |
| 3568 | |
| 3569 case TOKeof: | |
| 3570 return FALSE; | |
| 3571 | |
| 3572 default: | |
| 3573 continue; | |
| 3574 } | |
| 3575 break; | |
| 3576 } | |
| 3577 | |
| 3578 *pt = t; | |
| 3579 return TRUE; | |
| 3580 } | |
| 3581 | |
| 3582 /********************************************** | |
| 3583 * Skip over | |
| 3584 * instance foo.bar(parameters...) | |
| 3585 * Output: | |
| 3586 * if (pt), *pt is set to the token following the closing ) | |
| 3587 * Returns: | |
| 3588 * 1 it's valid instance syntax | |
| 3589 * 0 invalid instance syntax | |
| 3590 */ | |
| 3591 | |
| 3592 int Parser::isTemplateInstance(Token *t, Token **pt) | |
| 3593 { | |
| 3594 t = peek(t); | |
| 3595 if (t->value != TOKdot) | |
| 3596 { | |
| 3597 if (t->value != TOKidentifier) | |
| 3598 goto Lfalse; | |
| 3599 t = peek(t); | |
| 3600 } | |
| 3601 while (t->value == TOKdot) | |
| 3602 { | |
| 3603 t = peek(t); | |
| 3604 if (t->value != TOKidentifier) | |
| 3605 goto Lfalse; | |
| 3606 t = peek(t); | |
| 3607 } | |
| 3608 if (t->value != TOKlparen) | |
| 3609 goto Lfalse; | |
| 3610 | |
| 3611 // Skip over the template arguments | |
| 3612 while (1) | |
| 3613 { | |
| 3614 while (1) | |
| 3615 { | |
| 3616 t = peek(t); | |
| 3617 switch (t->value) | |
| 3618 { | |
| 3619 case TOKlparen: | |
| 3620 if (!skipParens(t, &t)) | |
| 3621 goto Lfalse; | |
| 3622 continue; | |
| 3623 case TOKrparen: | |
| 3624 break; | |
| 3625 case TOKcomma: | |
| 3626 break; | |
| 3627 case TOKeof: | |
| 3628 case TOKsemicolon: | |
| 3629 goto Lfalse; | |
| 3630 default: | |
| 3631 continue; | |
| 3632 } | |
| 3633 break; | |
| 3634 } | |
| 3635 | |
| 3636 if (t->value != TOKcomma) | |
| 3637 break; | |
| 3638 } | |
| 3639 if (t->value != TOKrparen) | |
| 3640 goto Lfalse; | |
| 3641 t = peek(t); | |
| 3642 if (pt) | |
| 3643 *pt = t; | |
| 3644 return 1; | |
| 3645 | |
| 3646 Lfalse: | |
| 3647 return 0; | |
| 3648 } | |
| 3649 | |
| 3650 /******************************************* | |
| 3651 * Skip parens, brackets. | |
| 3652 * Input: | |
| 3653 * t is on opening ( | |
| 3654 * Output: | |
| 3655 * *pt is set to closing token, which is ')' on success | |
| 3656 * Returns: | |
| 3657 * !=0 successful | |
| 3658 * 0 some parsing error | |
| 3659 */ | |
| 3660 | |
| 3661 int Parser::skipParens(Token *t, Token **pt) | |
| 3662 { | |
| 3663 int parens = 0; | |
| 3664 | |
| 3665 while (1) | |
| 3666 { | |
| 3667 switch (t->value) | |
| 3668 { | |
| 3669 case TOKlparen: | |
| 3670 parens++; | |
| 3671 break; | |
| 3672 | |
| 3673 case TOKrparen: | |
| 3674 parens--; | |
| 3675 if (parens < 0) | |
| 3676 goto Lfalse; | |
| 3677 if (parens == 0) | |
| 3678 goto Ldone; | |
| 3679 break; | |
| 3680 | |
| 3681 case TOKeof: | |
| 3682 case TOKsemicolon: | |
| 3683 goto Lfalse; | |
| 3684 | |
| 3685 default: | |
| 3686 break; | |
| 3687 } | |
| 3688 t = peek(t); | |
| 3689 } | |
| 3690 | |
| 3691 Ldone: | |
| 3692 if (*pt) | |
| 3693 *pt = t; | |
| 3694 return 1; | |
| 3695 | |
| 3696 Lfalse: | |
| 3697 return 0; | |
| 3698 } | |
| 3699 | |
| 3700 /********************************* Expression Parser ***************************/ | |
| 3701 | |
| 3702 Expression *Parser::parsePrimaryExp() | |
| 3703 { Expression *e; | |
| 3704 Type *t; | |
| 3705 Identifier *id; | |
| 3706 enum TOK save; | |
| 3707 Loc loc = this->loc; | |
| 3708 | |
| 3709 switch (token.value) | |
| 3710 { | |
| 3711 case TOKidentifier: | |
| 3712 id = token.ident; | |
| 3713 nextToken(); | |
| 3714 if (token.value == TOKnot && peek(&token)->value == TOKlparen) | |
| 3715 { // identifier!(template-argument-list) | |
| 3716 TemplateInstance *tempinst; | |
| 3717 | |
| 3718 tempinst = new TemplateInstance(loc, id); | |
| 3719 nextToken(); | |
| 3720 tempinst->tiargs = parseTemplateArgumentList(); | |
| 3721 e = new ScopeExp(loc, tempinst); | |
| 3722 } | |
| 3723 else | |
| 3724 e = new IdentifierExp(loc, id); | |
| 3725 break; | |
| 3726 | |
| 3727 case TOKdollar: | |
| 3728 if (!inBrackets) | |
| 3729 error("'$' is valid only inside [] of index or slice"); | |
| 3730 e = new DollarExp(loc); | |
| 3731 nextToken(); | |
| 3732 break; | |
| 3733 | |
| 3734 case TOKdot: | |
| 3735 // Signal global scope '.' operator with "" identifier | |
| 3736 e = new IdentifierExp(loc, Id::empty); | |
| 3737 break; | |
| 3738 | |
| 3739 case TOKthis: | |
| 3740 e = new ThisExp(loc); | |
| 3741 nextToken(); | |
| 3742 break; | |
| 3743 | |
| 3744 case TOKsuper: | |
| 3745 e = new SuperExp(loc); | |
| 3746 nextToken(); | |
| 3747 break; | |
| 3748 | |
| 3749 case TOKint32v: | |
| 3750 e = new IntegerExp(loc, token.int32value, Type::tint32); | |
| 3751 nextToken(); | |
| 3752 break; | |
| 3753 | |
| 3754 case TOKuns32v: | |
| 3755 e = new IntegerExp(loc, token.uns32value, Type::tuns32); | |
| 3756 nextToken(); | |
| 3757 break; | |
| 3758 | |
| 3759 case TOKint64v: | |
| 3760 e = new IntegerExp(loc, token.int64value, Type::tint64); | |
| 3761 nextToken(); | |
| 3762 break; | |
| 3763 | |
| 3764 case TOKuns64v: | |
| 3765 e = new IntegerExp(loc, token.uns64value, Type::tuns64); | |
| 3766 nextToken(); | |
| 3767 break; | |
| 3768 | |
| 3769 case TOKfloat32v: | |
| 3770 e = new RealExp(loc, token.float80value, Type::tfloat32); | |
| 3771 nextToken(); | |
| 3772 break; | |
| 3773 | |
| 3774 case TOKfloat64v: | |
| 3775 e = new RealExp(loc, token.float80value, Type::tfloat64); | |
| 3776 nextToken(); | |
| 3777 break; | |
| 3778 | |
| 3779 case TOKfloat80v: | |
| 3780 e = new RealExp(loc, token.float80value, Type::tfloat80); | |
| 3781 nextToken(); | |
| 3782 break; | |
| 3783 | |
| 3784 case TOKimaginary32v: | |
| 3785 e = new RealExp(loc, token.float80value, Type::timaginary32); | |
| 3786 nextToken(); | |
| 3787 break; | |
| 3788 | |
| 3789 case TOKimaginary64v: | |
| 3790 e = new RealExp(loc, token.float80value, Type::timaginary64); | |
| 3791 nextToken(); | |
| 3792 break; | |
| 3793 | |
| 3794 case TOKimaginary80v: | |
| 3795 e = new RealExp(loc, token.float80value, Type::timaginary80); | |
| 3796 nextToken(); | |
| 3797 break; | |
| 3798 | |
| 3799 case TOKnull: | |
| 3800 e = new NullExp(loc); | |
| 3801 nextToken(); | |
| 3802 break; | |
| 3803 | |
| 3804 case TOKtrue: | |
| 3805 e = new IntegerExp(loc, 1, Type::tbool); | |
| 3806 nextToken(); | |
| 3807 break; | |
| 3808 | |
| 3809 case TOKfalse: | |
| 3810 e = new IntegerExp(loc, 0, Type::tbool); | |
| 3811 nextToken(); | |
| 3812 break; | |
| 3813 | |
| 3814 case TOKcharv: | |
| 3815 e = new IntegerExp(loc, token.uns32value, Type::tchar); | |
| 3816 nextToken(); | |
| 3817 break; | |
| 3818 | |
| 3819 case TOKwcharv: | |
| 3820 e = new IntegerExp(loc, token.uns32value, Type::twchar); | |
| 3821 nextToken(); | |
| 3822 break; | |
| 3823 | |
| 3824 case TOKdcharv: | |
| 3825 e = new IntegerExp(loc, token.uns32value, Type::tdchar); | |
| 3826 nextToken(); | |
| 3827 break; | |
| 3828 | |
| 3829 case TOKstring: | |
| 3830 { unsigned char *s; | |
| 3831 unsigned len; | |
| 3832 unsigned char postfix; | |
| 3833 | |
| 3834 // cat adjacent strings | |
| 3835 s = token.ustring; | |
| 3836 len = token.len; | |
| 3837 postfix = token.postfix; | |
| 3838 while (1) | |
| 3839 { | |
| 3840 nextToken(); | |
| 3841 if (token.value == TOKstring) | |
| 3842 { unsigned len1; | |
| 3843 unsigned len2; | |
| 3844 unsigned char *s2; | |
| 3845 | |
| 3846 if (token.postfix) | |
| 3847 { if (token.postfix != postfix) | |
| 3848 error("mismatched string literal postfixes '%c' and '%c'", postfix, token.postfix); | |
| 3849 postfix = token.postfix; | |
| 3850 } | |
| 3851 | |
| 3852 len1 = len; | |
| 3853 len2 = token.len; | |
| 3854 len = len1 + len2; | |
| 3855 s2 = (unsigned char *)mem.malloc((len + 1) * sizeof(unsigned char)); | |
| 3856 memcpy(s2, s, len1 * sizeof(unsigned char)); | |
| 3857 memcpy(s2 + len1, token.ustring, (len2 + 1) * sizeof(unsigned char)); | |
| 3858 s = s2; | |
| 3859 } | |
| 3860 else | |
| 3861 break; | |
| 3862 } | |
| 3863 e = new StringExp(loc, s, len, postfix); | |
| 3864 break; | |
| 3865 } | |
| 3866 | |
| 3867 CASE_BASIC_TYPES_X(t): | |
| 3868 nextToken(); | |
| 3869 L1: | |
| 3870 check(TOKdot, t->toChars()); | |
| 3871 if (token.value != TOKidentifier) | |
| 3872 { error("found '%s' when expecting identifier following '%s.'", token.toChars(), t->toChars()); | |
| 3873 goto Lerr; | |
| 3874 } | |
| 3875 e = new TypeDotIdExp(loc, t, token.ident); | |
| 3876 nextToken(); | |
| 3877 break; | |
| 3878 | |
| 3879 case TOKtypeof: | |
| 3880 { Expression *exp; | |
| 3881 | |
| 3882 nextToken(); | |
| 3883 check(TOKlparen); | |
| 3884 exp = parseExpression(); | |
| 3885 check(TOKrparen); | |
| 3886 t = new TypeTypeof(loc, exp); | |
| 3887 if (token.value == TOKdot) | |
| 3888 goto L1; | |
| 3889 e = new TypeExp(loc, t); | |
| 3890 break; | |
| 3891 } | |
| 3892 | |
| 3893 case TOKtypeid: | |
| 3894 { Type *t; | |
| 3895 | |
| 3896 nextToken(); | |
| 3897 check(TOKlparen, "typeid"); | |
| 3898 t = parseBasicType(); | |
| 3899 t = parseDeclarator(t,NULL); // ( type ) | |
| 3900 check(TOKrparen); | |
| 3901 e = new TypeidExp(loc, t); | |
| 3902 break; | |
| 3903 } | |
| 3904 | |
| 3905 case TOKis: | |
| 3906 { Type *targ; | |
| 3907 Identifier *ident = NULL; | |
| 3908 Type *tspec = NULL; | |
| 3909 enum TOK tok = TOKreserved; | |
| 3910 enum TOK tok2 = TOKreserved; | |
| 3911 Loc loc = this->loc; | |
| 3912 | |
| 3913 nextToken(); | |
| 3914 if (token.value == TOKlparen) | |
| 3915 { | |
| 3916 nextToken(); | |
| 3917 targ = parseBasicType(); | |
| 3918 targ = parseDeclarator(targ, &ident); | |
| 3919 if (token.value == TOKcolon || token.value == TOKequal) | |
| 3920 { | |
| 3921 tok = token.value; | |
| 3922 nextToken(); | |
| 3923 if (tok == TOKequal && | |
| 3924 (token.value == TOKtypedef || | |
| 3925 token.value == TOKstruct || | |
| 3926 token.value == TOKunion || | |
| 3927 token.value == TOKclass || | |
| 3928 token.value == TOKsuper || | |
| 3929 token.value == TOKenum || | |
| 3930 token.value == TOKinterface || | |
| 3931 token.value == TOKfunction || | |
| 3932 token.value == TOKdelegate || | |
| 3933 token.value == TOKreturn)) | |
| 3934 { | |
| 3935 tok2 = token.value; | |
| 3936 nextToken(); | |
| 3937 } | |
| 3938 else | |
| 3939 { | |
| 3940 tspec = parseBasicType(); | |
| 3941 tspec = parseDeclarator(tspec, NULL); | |
| 3942 } | |
| 3943 } | |
| 3944 check(TOKrparen); | |
| 3945 } | |
| 3946 else | |
| 3947 { error("(type identifier : specialization) expected following is"); | |
| 3948 goto Lerr; | |
| 3949 } | |
| 19 | 3950 e = new IsExp(loc, targ, ident, tok, tspec, tok2); |
| 1 | 3951 break; |
| 3952 } | |
| 3953 | |
| 3954 case TOKassert: | |
| 3955 { Expression *msg = NULL; | |
| 3956 | |
| 3957 nextToken(); | |
| 3958 check(TOKlparen, "assert"); | |
| 3959 e = parseAssignExp(); | |
| 3960 if (token.value == TOKcomma) | |
| 3961 { nextToken(); | |
| 3962 msg = parseAssignExp(); | |
| 3963 } | |
| 3964 check(TOKrparen); | |
| 3965 e = new AssertExp(loc, e, msg); | |
| 3966 break; | |
| 3967 } | |
| 3968 | |
| 3969 case TOKmixin: | |
| 3970 { | |
| 3971 nextToken(); | |
| 3972 check(TOKlparen, "mixin"); | |
| 3973 e = parseAssignExp(); | |
| 3974 check(TOKrparen); | |
| 3975 e = new CompileExp(loc, e); | |
| 3976 break; | |
| 3977 } | |
| 3978 | |
| 3979 case TOKimport: | |
| 3980 { | |
| 3981 nextToken(); | |
| 3982 check(TOKlparen, "import"); | |
| 3983 e = parseAssignExp(); | |
| 3984 check(TOKrparen); | |
| 3985 e = new FileExp(loc, e); | |
| 3986 break; | |
| 3987 } | |
| 3988 | |
| 3989 case TOKlparen: | |
| 3990 if (peekPastParen(&token)->value == TOKlcurly) | |
| 3991 { // (arguments) { statements... } | |
| 3992 save = TOKdelegate; | |
| 3993 goto case_delegate; | |
| 3994 } | |
| 3995 // ( expression ) | |
| 3996 nextToken(); | |
| 3997 e = parseExpression(); | |
| 3998 check(loc, TOKrparen); | |
| 3999 break; | |
| 4000 | |
| 4001 case TOKlbracket: | |
| 4002 { /* Parse array literals and associative array literals: | |
| 4003 * [ value, value, value ... ] | |
| 4004 * [ key:value, key:value, key:value ... ] | |
| 4005 */ | |
| 4006 Expressions *values = new Expressions(); | |
| 4007 Expressions *keys = NULL; | |
| 4008 | |
| 4009 nextToken(); | |
| 4010 if (token.value != TOKrbracket) | |
| 4011 { | |
| 4012 while (1) | |
| 4013 { | |
| 4014 Expression *e = parseAssignExp(); | |
| 4015 if (token.value == TOKcolon && (keys || values->dim == 0)) | |
| 4016 { nextToken(); | |
| 4017 if (!keys) | |
| 4018 keys = new Expressions(); | |
| 4019 keys->push(e); | |
| 4020 e = parseAssignExp(); | |
| 4021 } | |
| 4022 else if (keys) | |
| 4023 { error("'key:value' expected for associative array literal"); | |
| 4024 delete keys; | |
| 4025 keys = NULL; | |
| 4026 } | |
| 4027 values->push(e); | |
| 4028 if (token.value == TOKrbracket) | |
| 4029 break; | |
| 4030 check(TOKcomma); | |
| 4031 } | |
| 4032 } | |
| 4033 check(TOKrbracket); | |
| 4034 | |
| 4035 if (keys) | |
| 4036 e = new AssocArrayLiteralExp(loc, keys, values); | |
| 4037 else | |
| 4038 e = new ArrayLiteralExp(loc, values); | |
| 4039 break; | |
| 4040 } | |
| 4041 | |
| 4042 case TOKlcurly: | |
| 4043 // { statements... } | |
| 4044 save = TOKdelegate; | |
| 4045 goto case_delegate; | |
| 4046 | |
| 4047 case TOKfunction: | |
| 4048 case TOKdelegate: | |
| 4049 save = token.value; | |
| 4050 nextToken(); | |
| 4051 case_delegate: | |
| 4052 { | |
| 4053 /* function type(parameters) { body } | |
| 4054 * delegate type(parameters) { body } | |
| 4055 */ | |
| 4056 Arguments *arguments; | |
| 4057 int varargs; | |
| 4058 FuncLiteralDeclaration *fd; | |
| 4059 Type *t; | |
| 4060 | |
| 4061 if (token.value == TOKlcurly) | |
| 4062 { | |
| 4063 t = NULL; | |
| 4064 varargs = 0; | |
| 4065 arguments = new Arguments(); | |
| 4066 } | |
| 4067 else | |
| 4068 { | |
| 4069 if (token.value == TOKlparen) | |
| 4070 t = NULL; | |
| 4071 else | |
| 4072 { | |
| 4073 t = parseBasicType(); | |
| 4074 t = parseBasicType2(t); // function return type | |
| 4075 } | |
| 4076 arguments = parseParameters(&varargs); | |
| 4077 } | |
| 4078 t = new TypeFunction(arguments, t, varargs, linkage); | |
| 4079 fd = new FuncLiteralDeclaration(loc, 0, t, save, NULL); | |
| 4080 parseContracts(fd); | |
| 4081 e = new FuncExp(loc, fd); | |
| 4082 break; | |
| 4083 } | |
| 4084 | |
| 4085 default: | |
| 4086 error("expression expected, not '%s'", token.toChars()); | |
| 4087 Lerr: | |
| 4088 // Anything for e, as long as it's not NULL | |
| 4089 e = new IntegerExp(loc, 0, Type::tint32); | |
| 4090 nextToken(); | |
| 4091 break; | |
| 4092 } | |
| 4093 return parsePostExp(e); | |
| 4094 } | |
| 4095 | |
| 4096 Expression *Parser::parsePostExp(Expression *e) | |
| 4097 { | |
| 4098 Loc loc; | |
| 4099 | |
| 4100 while (1) | |
| 4101 { | |
| 4102 loc = this->loc; | |
| 4103 switch (token.value) | |
| 4104 { | |
| 4105 case TOKdot: | |
| 4106 nextToken(); | |
| 4107 if (token.value == TOKidentifier) | |
| 4108 { Identifier *id = token.ident; | |
| 4109 | |
| 4110 nextToken(); | |
| 4111 if (token.value == TOKnot && peek(&token)->value == TOKlparen) | |
| 4112 { // identifier!(template-argument-list) | |
| 4113 TemplateInstance *tempinst; | |
| 4114 | |
| 4115 tempinst = new TemplateInstance(loc, id); | |
| 4116 nextToken(); | |
| 4117 tempinst->tiargs = parseTemplateArgumentList(); | |
| 4118 e = new DotTemplateInstanceExp(loc, e, tempinst); | |
| 4119 } | |
| 4120 else | |
| 4121 e = new DotIdExp(loc, e, id); | |
| 4122 continue; | |
| 4123 } | |
| 4124 else if (token.value == TOKnew) | |
| 4125 { | |
| 4126 e = parseNewExp(e); | |
| 4127 continue; | |
| 4128 } | |
| 4129 else | |
| 4130 error("identifier expected following '.', not '%s'", token.toChars()); | |
| 4131 break; | |
| 4132 | |
| 4133 case TOKplusplus: | |
| 4134 e = new PostExp(TOKplusplus, loc, e); | |
| 4135 break; | |
| 4136 | |
| 4137 case TOKminusminus: | |
| 4138 e = new PostExp(TOKminusminus, loc, e); | |
| 4139 break; | |
| 4140 | |
| 4141 case TOKlparen: | |
| 4142 e = new CallExp(loc, e, parseArguments()); | |
| 4143 continue; | |
| 4144 | |
| 4145 case TOKlbracket: | |
| 4146 { // array dereferences: | |
| 4147 // array[index] | |
| 4148 // array[] | |
| 4149 // array[lwr .. upr] | |
| 4150 Expression *index; | |
| 4151 Expression *upr; | |
| 4152 | |
| 4153 inBrackets++; | |
| 4154 nextToken(); | |
| 4155 if (token.value == TOKrbracket) | |
| 4156 { // array[] | |
| 4157 e = new SliceExp(loc, e, NULL, NULL); | |
| 4158 nextToken(); | |
| 4159 } | |
| 4160 else | |
| 4161 { | |
| 4162 index = parseAssignExp(); | |
| 4163 if (token.value == TOKslice) | |
| 4164 { // array[lwr .. upr] | |
| 4165 nextToken(); | |
| 4166 upr = parseAssignExp(); | |
| 4167 e = new SliceExp(loc, e, index, upr); | |
| 4168 } | |
| 4169 else | |
| 4170 { // array[index, i2, i3, i4, ...] | |
| 4171 Expressions *arguments = new Expressions(); | |
| 4172 arguments->push(index); | |
| 4173 if (token.value == TOKcomma) | |
| 4174 { | |
| 4175 nextToken(); | |
| 4176 while (1) | |
| 4177 { Expression *arg; | |
| 4178 | |
| 4179 arg = parseAssignExp(); | |
| 4180 arguments->push(arg); | |
| 4181 if (token.value == TOKrbracket) | |
| 4182 break; | |
| 4183 check(TOKcomma); | |
| 4184 } | |
| 4185 } | |
| 4186 e = new ArrayExp(loc, e, arguments); | |
| 4187 } | |
| 4188 check(TOKrbracket); | |
| 4189 inBrackets--; | |
| 4190 } | |
| 4191 continue; | |
| 4192 } | |
| 4193 | |
| 4194 default: | |
| 4195 return e; | |
| 4196 } | |
| 4197 nextToken(); | |
| 4198 } | |
| 4199 } | |
| 4200 | |
| 4201 Expression *Parser::parseUnaryExp() | |
| 4202 { Expression *e; | |
| 4203 Loc loc = this->loc; | |
| 4204 | |
| 4205 switch (token.value) | |
| 4206 { | |
| 4207 case TOKand: | |
| 4208 nextToken(); | |
| 4209 e = parseUnaryExp(); | |
| 4210 e = new AddrExp(loc, e); | |
| 4211 break; | |
| 4212 | |
| 4213 case TOKplusplus: | |
| 4214 nextToken(); | |
| 4215 e = parseUnaryExp(); | |
| 4216 e = new AddAssignExp(loc, e, new IntegerExp(loc, 1, Type::tint32)); | |
| 4217 break; | |
| 4218 | |
| 4219 case TOKminusminus: | |
| 4220 nextToken(); | |
| 4221 e = parseUnaryExp(); | |
| 4222 e = new MinAssignExp(loc, e, new IntegerExp(loc, 1, Type::tint32)); | |
| 4223 break; | |
| 4224 | |
| 4225 case TOKmul: | |
| 4226 nextToken(); | |
| 4227 e = parseUnaryExp(); | |
| 4228 e = new PtrExp(loc, e); | |
| 4229 break; | |
| 4230 | |
| 4231 case TOKmin: | |
| 4232 nextToken(); | |
| 4233 e = parseUnaryExp(); | |
| 4234 e = new NegExp(loc, e); | |
| 4235 break; | |
| 4236 | |
| 4237 case TOKadd: | |
| 4238 nextToken(); | |
| 4239 e = parseUnaryExp(); | |
| 4240 e = new UAddExp(loc, e); | |
| 4241 break; | |
| 4242 | |
| 4243 case TOKnot: | |
| 4244 nextToken(); | |
| 4245 e = parseUnaryExp(); | |
| 4246 e = new NotExp(loc, e); | |
| 4247 break; | |
| 4248 | |
| 4249 case TOKtilde: | |
| 4250 nextToken(); | |
| 4251 e = parseUnaryExp(); | |
| 4252 e = new ComExp(loc, e); | |
| 4253 break; | |
| 4254 | |
| 4255 case TOKdelete: | |
| 4256 nextToken(); | |
| 4257 e = parseUnaryExp(); | |
| 4258 e = new DeleteExp(loc, e); | |
| 4259 break; | |
| 4260 | |
| 4261 case TOKnew: | |
| 4262 e = parseNewExp(NULL); | |
| 4263 break; | |
| 4264 | |
| 4265 case TOKcast: // cast(type) expression | |
| 4266 { Type *t; | |
| 4267 | |
| 4268 nextToken(); | |
| 4269 check(TOKlparen); | |
| 4270 t = parseBasicType(); | |
| 4271 t = parseDeclarator(t,NULL); // ( type ) | |
| 4272 check(TOKrparen); | |
| 4273 | |
| 4274 e = parseUnaryExp(); | |
| 4275 e = new CastExp(loc, e, t); | |
| 4276 break; | |
| 4277 } | |
| 4278 | |
| 4279 case TOKlparen: | |
| 4280 { Token *tk; | |
| 4281 | |
| 4282 tk = peek(&token); | |
| 4283 #if CCASTSYNTAX | |
| 4284 // If cast | |
| 4285 if (isDeclaration(tk, 0, TOKrparen, &tk)) | |
| 4286 { | |
| 4287 tk = peek(tk); // skip over right parenthesis | |
| 4288 switch (tk->value) | |
| 4289 { | |
| 4290 case TOKdot: | |
| 4291 case TOKplusplus: | |
| 4292 case TOKminusminus: | |
| 4293 case TOKnot: | |
| 4294 case TOKdelete: | |
| 4295 case TOKnew: | |
| 4296 case TOKlparen: | |
| 4297 case TOKidentifier: | |
| 4298 case TOKthis: | |
| 4299 case TOKsuper: | |
| 4300 case TOKint32v: | |
| 4301 case TOKuns32v: | |
| 4302 case TOKint64v: | |
| 4303 case TOKuns64v: | |
| 4304 case TOKfloat32v: | |
| 4305 case TOKfloat64v: | |
| 4306 case TOKfloat80v: | |
| 4307 case TOKimaginary32v: | |
| 4308 case TOKimaginary64v: | |
| 4309 case TOKimaginary80v: | |
| 4310 case TOKnull: | |
| 4311 case TOKtrue: | |
| 4312 case TOKfalse: | |
| 4313 case TOKcharv: | |
| 4314 case TOKwcharv: | |
| 4315 case TOKdcharv: | |
| 4316 case TOKstring: | |
| 4317 #if 0 | |
| 4318 case TOKtilde: | |
| 4319 case TOKand: | |
| 4320 case TOKmul: | |
| 4321 case TOKmin: | |
| 4322 case TOKadd: | |
| 4323 #endif | |
| 4324 case TOKfunction: | |
| 4325 case TOKdelegate: | |
| 4326 case TOKtypeof: | |
| 4327 CASE_BASIC_TYPES: // (type)int.size | |
| 4328 { // (type) una_exp | |
| 4329 Type *t; | |
| 4330 | |
| 4331 nextToken(); | |
| 4332 t = parseBasicType(); | |
| 4333 t = parseDeclarator(t,NULL); | |
| 4334 check(TOKrparen); | |
| 4335 | |
| 4336 // if .identifier | |
| 4337 if (token.value == TOKdot) | |
| 4338 { | |
| 4339 nextToken(); | |
| 4340 if (token.value != TOKidentifier) | |
| 4341 { error("Identifier expected following (type)."); | |
| 4342 return NULL; | |
| 4343 } | |
| 4344 e = new TypeDotIdExp(loc, t, token.ident); | |
| 4345 nextToken(); | |
| 4346 e = parsePostExp(e); | |
| 4347 } | |
| 4348 else | |
| 4349 { | |
| 4350 e = parseUnaryExp(); | |
| 4351 e = new CastExp(loc, e, t); | |
| 4352 error("C style cast illegal, use %s", e->toChars()); | |
| 4353 } | |
| 4354 return e; | |
| 4355 } | |
| 4356 } | |
| 4357 } | |
| 4358 #endif | |
| 4359 e = parsePrimaryExp(); | |
| 4360 break; | |
| 4361 } | |
| 4362 default: | |
| 4363 e = parsePrimaryExp(); | |
| 4364 break; | |
| 4365 } | |
| 4366 assert(e); | |
| 4367 return e; | |
| 4368 } | |
| 4369 | |
| 4370 Expression *Parser::parseMulExp() | |
| 4371 { Expression *e; | |
| 4372 Expression *e2; | |
| 4373 Loc loc = this->loc; | |
| 4374 | |
| 4375 e = parseUnaryExp(); | |
| 4376 while (1) | |
| 4377 { | |
| 4378 switch (token.value) | |
| 4379 { | |
| 4380 case TOKmul: nextToken(); e2 = parseUnaryExp(); e = new MulExp(loc,e,e2); continue; | |
| 4381 case TOKdiv: nextToken(); e2 = parseUnaryExp(); e = new DivExp(loc,e,e2); continue; | |
| 4382 case TOKmod: nextToken(); e2 = parseUnaryExp(); e = new ModExp(loc,e,e2); continue; | |
| 4383 | |
| 4384 default: | |
| 4385 break; | |
| 4386 } | |
| 4387 break; | |
| 4388 } | |
| 4389 return e; | |
| 4390 } | |
| 4391 | |
| 4392 Expression *Parser::parseAddExp() | |
| 4393 { Expression *e; | |
| 4394 Expression *e2; | |
| 4395 Loc loc = this->loc; | |
| 4396 | |
| 4397 e = parseMulExp(); | |
| 4398 while (1) | |
| 4399 { | |
| 4400 switch (token.value) | |
| 4401 { | |
| 4402 case TOKadd: nextToken(); e2 = parseMulExp(); e = new AddExp(loc,e,e2); continue; | |
| 4403 case TOKmin: nextToken(); e2 = parseMulExp(); e = new MinExp(loc,e,e2); continue; | |
| 4404 case TOKtilde: nextToken(); e2 = parseMulExp(); e = new CatExp(loc,e,e2); continue; | |
| 4405 | |
| 4406 default: | |
| 4407 break; | |
| 4408 } | |
| 4409 break; | |
| 4410 } | |
| 4411 return e; | |
| 4412 } | |
| 4413 | |
| 4414 Expression *Parser::parseShiftExp() | |
| 4415 { Expression *e; | |
| 4416 Expression *e2; | |
| 4417 Loc loc = this->loc; | |
| 4418 | |
| 4419 e = parseAddExp(); | |
| 4420 while (1) | |
| 4421 { | |
| 4422 switch (token.value) | |
| 4423 { | |
| 4424 case TOKshl: nextToken(); e2 = parseAddExp(); e = new ShlExp(loc,e,e2); continue; | |
| 4425 case TOKshr: nextToken(); e2 = parseAddExp(); e = new ShrExp(loc,e,e2); continue; | |
| 4426 case TOKushr: nextToken(); e2 = parseAddExp(); e = new UshrExp(loc,e,e2); continue; | |
| 4427 | |
| 4428 default: | |
| 4429 break; | |
| 4430 } | |
| 4431 break; | |
| 4432 } | |
| 4433 return e; | |
| 4434 } | |
| 4435 | |
| 4436 Expression *Parser::parseRelExp() | |
| 4437 { Expression *e; | |
| 4438 Expression *e2; | |
| 4439 enum TOK op; | |
| 4440 Loc loc = this->loc; | |
| 4441 | |
| 4442 e = parseShiftExp(); | |
| 4443 while (1) | |
| 4444 { | |
| 4445 switch (token.value) | |
| 4446 { | |
| 4447 case TOKlt: | |
| 4448 case TOKle: | |
| 4449 case TOKgt: | |
| 4450 case TOKge: | |
| 4451 case TOKunord: | |
| 4452 case TOKlg: | |
| 4453 case TOKleg: | |
| 4454 case TOKule: | |
| 4455 case TOKul: | |
| 4456 case TOKuge: | |
| 4457 case TOKug: | |
| 4458 case TOKue: | |
| 4459 op = token.value; | |
| 4460 nextToken(); | |
| 4461 e2 = parseShiftExp(); | |
| 4462 e = new CmpExp(op, loc, e, e2); | |
| 4463 continue; | |
| 4464 | |
| 4465 case TOKin: | |
| 4466 nextToken(); | |
| 4467 e2 = parseShiftExp(); | |
| 4468 e = new InExp(loc, e, e2); | |
| 4469 continue; | |
| 4470 | |
| 4471 default: | |
| 4472 break; | |
| 4473 } | |
| 4474 break; | |
| 4475 } | |
| 4476 return e; | |
| 4477 } | |
| 4478 | |
| 4479 Expression *Parser::parseEqualExp() | |
| 4480 { Expression *e; | |
| 4481 Expression *e2; | |
| 4482 Token *t; | |
| 4483 Loc loc = this->loc; | |
| 4484 | |
| 4485 e = parseRelExp(); | |
| 4486 while (1) | |
| 4487 { enum TOK value = token.value; | |
| 4488 | |
| 4489 switch (value) | |
| 4490 { | |
| 4491 case TOKequal: | |
| 4492 case TOKnotequal: | |
| 4493 nextToken(); | |
| 4494 e2 = parseRelExp(); | |
| 4495 e = new EqualExp(value, loc, e, e2); | |
| 4496 continue; | |
| 4497 | |
| 4498 case TOKidentity: | |
| 4499 error("'===' is no longer legal, use 'is' instead"); | |
| 4500 goto L1; | |
| 4501 | |
| 4502 case TOKnotidentity: | |
| 4503 error("'!==' is no longer legal, use '!is' instead"); | |
| 4504 goto L1; | |
| 4505 | |
| 4506 case TOKis: | |
| 4507 value = TOKidentity; | |
| 4508 goto L1; | |
| 4509 | |
| 4510 case TOKnot: | |
| 4511 // Attempt to identify '!is' | |
| 4512 t = peek(&token); | |
| 4513 if (t->value != TOKis) | |
| 4514 break; | |
| 4515 nextToken(); | |
| 4516 value = TOKnotidentity; | |
| 4517 goto L1; | |
| 4518 | |
| 4519 L1: | |
| 4520 nextToken(); | |
| 4521 e2 = parseRelExp(); | |
| 4522 e = new IdentityExp(value, loc, e, e2); | |
| 4523 continue; | |
| 4524 | |
| 4525 default: | |
| 4526 break; | |
| 4527 } | |
| 4528 break; | |
| 4529 } | |
| 4530 return e; | |
| 4531 } | |
| 4532 | |
| 4533 Expression *Parser::parseCmpExp() | |
| 4534 { Expression *e; | |
| 4535 Expression *e2; | |
| 4536 Token *t; | |
| 4537 Loc loc = this->loc; | |
| 4538 | |
| 4539 e = parseShiftExp(); | |
| 4540 enum TOK op = token.value; | |
| 4541 | |
| 4542 switch (op) | |
| 4543 { | |
| 4544 case TOKequal: | |
| 4545 case TOKnotequal: | |
| 4546 nextToken(); | |
| 4547 e2 = parseShiftExp(); | |
| 4548 e = new EqualExp(op, loc, e, e2); | |
| 4549 break; | |
| 4550 | |
| 4551 case TOKis: | |
| 4552 op = TOKidentity; | |
| 4553 goto L1; | |
| 4554 | |
| 4555 case TOKnot: | |
| 4556 // Attempt to identify '!is' | |
| 4557 t = peek(&token); | |
| 4558 if (t->value != TOKis) | |
| 4559 break; | |
| 4560 nextToken(); | |
| 4561 op = TOKnotidentity; | |
| 4562 goto L1; | |
| 4563 | |
| 4564 L1: | |
| 4565 nextToken(); | |
| 4566 e2 = parseShiftExp(); | |
| 4567 e = new IdentityExp(op, loc, e, e2); | |
| 4568 break; | |
| 4569 | |
| 4570 case TOKlt: | |
| 4571 case TOKle: | |
| 4572 case TOKgt: | |
| 4573 case TOKge: | |
| 4574 case TOKunord: | |
| 4575 case TOKlg: | |
| 4576 case TOKleg: | |
| 4577 case TOKule: | |
| 4578 case TOKul: | |
| 4579 case TOKuge: | |
| 4580 case TOKug: | |
| 4581 case TOKue: | |
| 4582 nextToken(); | |
| 4583 e2 = parseShiftExp(); | |
| 4584 e = new CmpExp(op, loc, e, e2); | |
| 4585 break; | |
| 4586 | |
| 4587 case TOKin: | |
| 4588 nextToken(); | |
| 4589 e2 = parseShiftExp(); | |
| 4590 e = new InExp(loc, e, e2); | |
| 4591 break; | |
| 4592 | |
| 4593 default: | |
| 4594 break; | |
| 4595 } | |
| 4596 return e; | |
| 4597 } | |
| 4598 | |
| 4599 Expression *Parser::parseAndExp() | |
| 4600 { Expression *e; | |
| 4601 Expression *e2; | |
| 4602 Loc loc = this->loc; | |
| 4603 | |
| 4604 if (global.params.Dversion == 1) | |
| 4605 { | |
| 4606 e = parseEqualExp(); | |
| 4607 while (token.value == TOKand) | |
| 4608 { | |
| 4609 nextToken(); | |
| 4610 e2 = parseEqualExp(); | |
| 4611 e = new AndExp(loc,e,e2); | |
| 4612 loc = this->loc; | |
| 4613 } | |
| 4614 } | |
| 4615 else | |
| 4616 { | |
| 4617 e = parseCmpExp(); | |
| 4618 while (token.value == TOKand) | |
| 4619 { | |
| 4620 nextToken(); | |
| 4621 e2 = parseCmpExp(); | |
| 4622 e = new AndExp(loc,e,e2); | |
| 4623 loc = this->loc; | |
| 4624 } | |
| 4625 } | |
| 4626 return e; | |
| 4627 } | |
| 4628 | |
| 4629 Expression *Parser::parseXorExp() | |
| 4630 { Expression *e; | |
| 4631 Expression *e2; | |
| 4632 Loc loc = this->loc; | |
| 4633 | |
| 4634 e = parseAndExp(); | |
| 4635 while (token.value == TOKxor) | |
| 4636 { | |
| 4637 nextToken(); | |
| 4638 e2 = parseAndExp(); | |
| 4639 e = new XorExp(loc, e, e2); | |
| 4640 } | |
| 4641 return e; | |
| 4642 } | |
| 4643 | |
| 4644 Expression *Parser::parseOrExp() | |
| 4645 { Expression *e; | |
| 4646 Expression *e2; | |
| 4647 Loc loc = this->loc; | |
| 4648 | |
| 4649 e = parseXorExp(); | |
| 4650 while (token.value == TOKor) | |
| 4651 { | |
| 4652 nextToken(); | |
| 4653 e2 = parseXorExp(); | |
| 4654 e = new OrExp(loc, e, e2); | |
| 4655 } | |
| 4656 return e; | |
| 4657 } | |
| 4658 | |
| 4659 Expression *Parser::parseAndAndExp() | |
| 4660 { Expression *e; | |
| 4661 Expression *e2; | |
| 4662 Loc loc = this->loc; | |
| 4663 | |
| 4664 e = parseOrExp(); | |
| 4665 while (token.value == TOKandand) | |
| 4666 { | |
| 4667 nextToken(); | |
| 4668 e2 = parseOrExp(); | |
| 4669 e = new AndAndExp(loc, e, e2); | |
| 4670 } | |
| 4671 return e; | |
| 4672 } | |
| 4673 | |
| 4674 Expression *Parser::parseOrOrExp() | |
| 4675 { Expression *e; | |
| 4676 Expression *e2; | |
| 4677 Loc loc = this->loc; | |
| 4678 | |
| 4679 e = parseAndAndExp(); | |
| 4680 while (token.value == TOKoror) | |
| 4681 { | |
| 4682 nextToken(); | |
| 4683 e2 = parseAndAndExp(); | |
| 4684 e = new OrOrExp(loc, e, e2); | |
| 4685 } | |
| 4686 return e; | |
| 4687 } | |
| 4688 | |
| 4689 Expression *Parser::parseCondExp() | |
| 4690 { Expression *e; | |
| 4691 Expression *e1; | |
| 4692 Expression *e2; | |
| 4693 Loc loc = this->loc; | |
| 4694 | |
| 4695 e = parseOrOrExp(); | |
| 4696 if (token.value == TOKquestion) | |
| 4697 { | |
| 4698 nextToken(); | |
| 4699 e1 = parseExpression(); | |
| 4700 check(TOKcolon); | |
| 4701 e2 = parseCondExp(); | |
| 4702 e = new CondExp(loc, e, e1, e2); | |
| 4703 } | |
| 4704 return e; | |
| 4705 } | |
| 4706 | |
| 4707 Expression *Parser::parseAssignExp() | |
| 4708 { Expression *e; | |
| 4709 Expression *e2; | |
| 4710 Loc loc; | |
| 4711 | |
| 4712 e = parseCondExp(); | |
| 4713 while (1) | |
| 4714 { | |
| 4715 loc = this->loc; | |
| 4716 switch (token.value) | |
| 4717 { | |
| 4718 #define X(tok,ector) \ | |
| 4719 case tok: nextToken(); e2 = parseAssignExp(); e = new ector(loc,e,e2); continue; | |
| 4720 | |
| 4721 X(TOKassign, AssignExp); | |
| 4722 X(TOKaddass, AddAssignExp); | |
| 4723 X(TOKminass, MinAssignExp); | |
| 4724 X(TOKmulass, MulAssignExp); | |
| 4725 X(TOKdivass, DivAssignExp); | |
| 4726 X(TOKmodass, ModAssignExp); | |
| 4727 X(TOKandass, AndAssignExp); | |
| 4728 X(TOKorass, OrAssignExp); | |
| 4729 X(TOKxorass, XorAssignExp); | |
| 4730 X(TOKshlass, ShlAssignExp); | |
| 4731 X(TOKshrass, ShrAssignExp); | |
| 4732 X(TOKushrass, UshrAssignExp); | |
| 4733 X(TOKcatass, CatAssignExp); | |
| 4734 | |
| 4735 #undef X | |
| 4736 default: | |
| 4737 break; | |
| 4738 } | |
| 4739 break; | |
| 4740 } | |
| 4741 return e; | |
| 4742 } | |
| 4743 | |
| 4744 Expression *Parser::parseExpression() | |
| 4745 { Expression *e; | |
| 4746 Expression *e2; | |
| 4747 Loc loc = this->loc; | |
| 4748 | |
| 4749 //printf("Parser::parseExpression()\n"); | |
| 4750 e = parseAssignExp(); | |
| 4751 while (token.value == TOKcomma) | |
| 4752 { | |
| 4753 nextToken(); | |
| 4754 e2 = parseAssignExp(); | |
| 4755 e = new CommaExp(loc, e, e2); | |
| 4756 loc = this->loc; | |
| 4757 } | |
| 4758 return e; | |
| 4759 } | |
| 4760 | |
| 4761 | |
| 4762 /************************* | |
| 4763 * Collect argument list. | |
| 4764 * Assume current token is '(' or '['. | |
| 4765 */ | |
| 4766 | |
| 4767 Expressions *Parser::parseArguments() | |
| 4768 { // function call | |
| 4769 Expressions *arguments; | |
| 4770 Expression *arg; | |
| 4771 enum TOK endtok; | |
| 4772 | |
| 4773 arguments = new Expressions(); | |
| 4774 if (token.value == TOKlbracket) | |
| 4775 endtok = TOKrbracket; | |
| 4776 else | |
| 4777 endtok = TOKrparen; | |
| 4778 | |
| 4779 { | |
| 4780 nextToken(); | |
| 4781 if (token.value != endtok) | |
| 4782 { | |
| 4783 while (1) | |
| 4784 { | |
| 4785 arg = parseAssignExp(); | |
| 4786 arguments->push(arg); | |
| 4787 if (token.value == endtok) | |
| 4788 break; | |
| 4789 check(TOKcomma); | |
| 4790 } | |
| 4791 } | |
| 4792 check(endtok); | |
| 4793 } | |
| 4794 return arguments; | |
| 4795 } | |
| 4796 | |
| 4797 /******************************************* | |
| 4798 */ | |
| 4799 | |
| 4800 Expression *Parser::parseNewExp(Expression *thisexp) | |
| 4801 { Type *t; | |
| 4802 Expressions *newargs; | |
| 4803 Expressions *arguments = NULL; | |
| 4804 Expression *e; | |
| 4805 Loc loc = this->loc; | |
| 4806 | |
| 4807 nextToken(); | |
| 4808 newargs = NULL; | |
| 4809 if (token.value == TOKlparen) | |
| 4810 { | |
| 4811 newargs = parseArguments(); | |
| 4812 } | |
| 4813 | |
| 4814 // An anonymous nested class starts with "class" | |
| 4815 if (token.value == TOKclass) | |
| 4816 { | |
| 4817 nextToken(); | |
| 4818 if (token.value == TOKlparen) | |
| 4819 arguments = parseArguments(); | |
| 4820 | |
| 4821 BaseClasses *baseclasses = NULL; | |
| 4822 if (token.value != TOKlcurly) | |
| 4823 baseclasses = parseBaseClasses(); | |
| 4824 | |
| 4825 Identifier *id = NULL; | |
| 4826 ClassDeclaration *cd = new ClassDeclaration(loc, id, baseclasses); | |
| 4827 | |
| 4828 if (token.value != TOKlcurly) | |
| 4829 { error("{ members } expected for anonymous class"); | |
| 4830 cd->members = NULL; | |
| 4831 } | |
| 4832 else | |
| 4833 { | |
| 4834 nextToken(); | |
| 4835 Array *decl = parseDeclDefs(0); | |
| 4836 if (token.value != TOKrcurly) | |
| 4837 error("class member expected"); | |
| 4838 nextToken(); | |
| 4839 cd->members = decl; | |
| 4840 } | |
| 4841 | |
| 4842 e = new NewAnonClassExp(loc, thisexp, newargs, cd, arguments); | |
| 4843 | |
| 4844 return e; | |
| 4845 } | |
| 4846 | |
| 4847 #if LTORARRAYDECL | |
| 4848 t = parseBasicType(); | |
| 4849 t = parseBasicType2(t); | |
| 4850 if (t->ty == Taarray) | |
| 4851 { | |
| 4852 Type *index = ((TypeAArray *)t)->index; | |
| 4853 | |
| 4854 Expression *e = index->toExpression(); | |
| 4855 if (e) | |
| 4856 { arguments = new Expressions(); | |
| 4857 arguments->push(e); | |
| 4858 t = new TypeDArray(t->next); | |
| 4859 } | |
| 4860 else | |
| 4861 { | |
| 4862 error("need size of rightmost array, not type %s", index->toChars()); | |
| 4863 return new NullExp(loc); | |
| 4864 } | |
| 4865 } | |
| 4866 else if (t->ty == Tsarray) | |
| 4867 { | |
| 4868 TypeSArray *tsa = (TypeSArray *)t; | |
| 4869 Expression *e = tsa->dim; | |
| 4870 | |
| 4871 arguments = new Expressions(); | |
| 4872 arguments->push(e); | |
| 4873 t = new TypeDArray(t->next); | |
| 4874 } | |
| 4875 else if (token.value == TOKlparen) | |
| 4876 { | |
| 4877 arguments = parseArguments(); | |
| 4878 } | |
| 4879 #else | |
| 4880 t = parseBasicType(); | |
| 4881 while (token.value == TOKmul) | |
| 4882 { t = new TypePointer(t); | |
| 4883 nextToken(); | |
| 4884 } | |
| 4885 if (token.value == TOKlbracket) | |
| 4886 { | |
| 4887 Expression *e; | |
| 4888 | |
| 4889 nextToken(); | |
| 4890 e = parseAssignExp(); | |
| 4891 arguments = new Array(); | |
| 4892 arguments->push(e); | |
| 4893 check(TOKrbracket); | |
| 4894 t = parseDeclarator(t, NULL); | |
| 4895 t = new TypeDArray(t); | |
| 4896 } | |
| 4897 else if (token.value == TOKlparen) | |
| 4898 arguments = parseArguments(); | |
| 4899 #endif | |
| 4900 e = new NewExp(loc, thisexp, newargs, t, arguments); | |
| 4901 return e; | |
| 4902 } | |
| 4903 | |
| 4904 /********************************************** | |
| 4905 */ | |
| 4906 | |
| 4907 void Parser::addComment(Dsymbol *s, unsigned char *blockComment) | |
| 4908 { | |
| 4909 s->addComment(combineComments(blockComment, token.lineComment)); | |
| 4910 } | |
| 4911 | |
| 4912 | |
| 4913 /********************************* ***************************/ | |
| 4914 |