Mercurial > projects > ldc
annotate dmd/statement.c @ 310:d20cf0dec9c1 trunk
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
| author | lindquist |
|---|---|
| date | Sat, 28 Jun 2008 11:50:28 +0200 |
| parents | d59c363fccad |
| children | aaade6ded589 |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 3 // Copyright (c) 1999-2007 by Digital Mars | |
| 4 // All Rights Reserved | |
| 5 // written by Walter Bright | |
| 6 // http://www.digitalmars.com | |
| 7 // License for redistribution is by either the Artistic License | |
| 8 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
| 9 // See the included readme.txt for details. | |
| 10 | |
| 11 #include <stdio.h> | |
| 12 #include <stdlib.h> | |
| 13 #include <assert.h> | |
| 14 | |
| 15 #include "mem.h" | |
| 16 | |
| 17 #include "statement.h" | |
| 18 #include "expression.h" | |
| 19 #include "cond.h" | |
| 20 #include "init.h" | |
| 21 #include "staticassert.h" | |
| 22 #include "mtype.h" | |
| 23 #include "scope.h" | |
| 24 #include "declaration.h" | |
| 25 #include "aggregate.h" | |
| 26 #include "id.h" | |
| 27 #include "hdrgen.h" | |
| 28 #include "parse.h" | |
| 29 | |
| 30 /******************************** Statement ***************************/ | |
| 31 | |
| 32 Statement::Statement(Loc loc) | |
| 33 : loc(loc) | |
| 34 { | |
| 35 #ifdef _DH | |
| 36 // If this is an in{} contract scope statement (skip for determining | |
| 37 // inlineStatus of a function body for header content) | |
| 38 incontract = 0; | |
| 39 #endif | |
| 40 } | |
| 41 | |
| 42 Statement *Statement::syntaxCopy() | |
| 43 { | |
| 44 assert(0); | |
| 45 return NULL; | |
| 46 } | |
| 47 | |
| 48 void Statement::print() | |
| 49 { | |
| 50 fprintf(stdmsg, "%s\n", toChars()); | |
| 51 fflush(stdmsg); | |
| 52 } | |
| 53 | |
| 54 char *Statement::toChars() | |
| 55 { OutBuffer *buf; | |
| 56 HdrGenState hgs; | |
| 57 | |
| 58 buf = new OutBuffer(); | |
| 59 toCBuffer(buf, &hgs); | |
| 60 return buf->toChars(); | |
| 61 } | |
| 62 | |
| 63 void Statement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 64 { | |
| 65 buf->printf("Statement::toCBuffer()"); | |
| 66 buf->writenl(); | |
| 67 } | |
| 68 | |
| 69 Statement *Statement::semantic(Scope *sc) | |
| 70 { | |
| 71 return this; | |
| 72 } | |
| 73 | |
| 74 // Same as semantic(), but do create a new scope | |
| 75 | |
| 76 Statement *Statement::semanticScope(Scope *sc, Statement *sbreak, Statement *scontinue) | |
| 77 { Scope *scd; | |
| 78 Statement *s; | |
| 79 | |
| 80 scd = sc->push(); | |
| 81 if (sbreak) | |
| 82 scd->sbreak = sbreak; | |
| 83 if (scontinue) | |
| 84 scd->scontinue = scontinue; | |
| 85 s = semantic(scd); | |
| 86 scd->pop(); | |
| 87 return s; | |
| 88 } | |
| 89 | |
| 90 void Statement::error(const char *format, ...) | |
| 91 { | |
| 92 va_list ap; | |
| 93 va_start(ap, format); | |
| 94 ::verror(loc, format, ap); | |
| 95 va_end( ap ); | |
| 96 } | |
| 97 | |
| 98 int Statement::hasBreak() | |
| 99 { | |
| 100 //printf("Statement::hasBreak()\n"); | |
| 101 return FALSE; | |
| 102 } | |
| 103 | |
| 104 int Statement::hasContinue() | |
| 105 { | |
| 106 return FALSE; | |
| 107 } | |
| 108 | |
| 109 // TRUE if statement uses exception handling | |
| 110 | |
| 111 int Statement::usesEH() | |
| 112 { | |
| 113 return FALSE; | |
| 114 } | |
| 115 | |
| 116 // TRUE if statement may fall off the end without a throw or return | |
| 117 | |
| 118 int Statement::fallOffEnd() | |
| 119 { | |
| 120 return TRUE; | |
| 121 } | |
| 122 | |
| 123 // TRUE if statement 'comes from' somewhere else, like a goto | |
| 124 | |
| 125 int Statement::comeFrom() | |
| 126 { | |
| 127 //printf("Statement::comeFrom()\n"); | |
| 128 return FALSE; | |
| 129 } | |
| 130 | |
| 131 /**************************************** | |
| 132 * If this statement has code that needs to run in a finally clause | |
| 133 * at the end of the current scope, return that code in the form of | |
| 134 * a Statement. | |
| 135 * Output: | |
| 136 * *sentry code executed upon entry to the scope | |
| 137 * *sexception code executed upon exit from the scope via exception | |
| 138 * *sfinally code executed in finally block | |
| 139 */ | |
| 140 | |
| 141 void Statement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 142 { | |
| 143 //printf("Statement::scopeCode()\n"); | |
| 144 //print(); | |
| 145 *sentry = NULL; | |
| 146 *sexception = NULL; | |
| 147 *sfinally = NULL; | |
| 148 } | |
| 149 | |
| 150 /********************************* | |
| 151 * Flatten out the scope by presenting the statement | |
| 152 * as an array of statements. | |
| 153 * Returns NULL if no flattening necessary. | |
| 154 */ | |
| 155 | |
| 156 Statements *Statement::flatten(Scope *sc) | |
| 157 { | |
| 158 return NULL; | |
| 159 } | |
| 160 | |
| 161 | |
| 162 /******************************** ExpStatement ***************************/ | |
| 163 | |
| 164 ExpStatement::ExpStatement(Loc loc, Expression *exp) | |
| 165 : Statement(loc) | |
| 166 { | |
| 167 this->exp = exp; | |
| 168 } | |
| 169 | |
| 170 Statement *ExpStatement::syntaxCopy() | |
| 171 { | |
| 172 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 173 ExpStatement *es = new ExpStatement(loc, e); | |
| 174 return es; | |
| 175 } | |
| 176 | |
| 177 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 178 { | |
| 179 if (exp) | |
| 180 exp->toCBuffer(buf, hgs); | |
| 181 buf->writeByte(';'); | |
| 182 if (!hgs->FLinit.init) | |
| 183 buf->writenl(); | |
| 184 } | |
| 185 | |
| 186 Statement *ExpStatement::semantic(Scope *sc) | |
| 187 { | |
| 188 if (exp) | |
| 189 { | |
| 190 //printf("ExpStatement::semantic() %s\n", exp->toChars()); | |
| 191 exp = exp->semantic(sc); | |
| 192 exp = resolveProperties(sc, exp); | |
| 193 exp->checkSideEffect(0); | |
| 194 exp = exp->optimize(0); | |
| 195 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0); | |
| 196 } | |
| 197 return this; | |
| 198 } | |
| 199 | |
| 200 int ExpStatement::fallOffEnd() | |
| 201 { | |
| 202 if (exp) | |
| 203 { | |
| 204 if (exp->op == TOKassert) | |
| 205 { AssertExp *a = (AssertExp *)exp; | |
| 206 | |
| 207 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 208 return FALSE; | |
| 209 } | |
| 210 else if (exp->op == TOKhalt) | |
| 211 return FALSE; | |
| 212 } | |
| 213 return TRUE; | |
| 214 } | |
| 215 | |
| 216 /******************************** CompileStatement ***************************/ | |
| 217 | |
| 218 CompileStatement::CompileStatement(Loc loc, Expression *exp) | |
| 219 : Statement(loc) | |
| 220 { | |
| 221 this->exp = exp; | |
| 222 } | |
| 223 | |
| 224 Statement *CompileStatement::syntaxCopy() | |
| 225 { | |
| 226 Expression *e = exp->syntaxCopy(); | |
| 227 CompileStatement *es = new CompileStatement(loc, e); | |
| 228 return es; | |
| 229 } | |
| 230 | |
| 231 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 232 { | |
| 233 buf->writestring("mixin("); | |
| 234 exp->toCBuffer(buf, hgs); | |
| 235 buf->writestring(");"); | |
| 236 if (!hgs->FLinit.init) | |
| 237 buf->writenl(); | |
| 238 } | |
| 239 | |
| 240 Statement *CompileStatement::semantic(Scope *sc) | |
| 241 { | |
| 242 //printf("CompileStatement::semantic() %s\n", exp->toChars()); | |
| 243 exp = exp->semantic(sc); | |
| 244 exp = resolveProperties(sc, exp); | |
| 245 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 246 if (exp->op != TOKstring) | |
| 247 { error("argument to mixin must be a string, not (%s)", exp->toChars()); | |
| 248 return this; | |
| 249 } | |
| 250 StringExp *se = (StringExp *)exp; | |
| 251 se = se->toUTF8(sc); | |
| 252 Parser p(sc->module, (unsigned char *)se->string, se->len, 0); | |
| 253 p.loc = loc; | |
| 254 p.nextToken(); | |
| 255 | |
| 256 Statements *statements = new Statements(); | |
| 257 while (p.token.value != TOKeof) | |
| 258 { | |
| 259 Statement *s = p.parseStatement(PSsemi | PScurlyscope); | |
| 260 statements->push(s); | |
| 261 } | |
| 262 | |
| 263 Statement *s = new CompoundStatement(loc, statements); | |
| 264 return s->semantic(sc); | |
| 265 } | |
| 266 | |
| 267 | |
| 268 /******************************** DeclarationStatement ***************************/ | |
| 269 | |
| 270 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration) | |
| 271 : ExpStatement(loc, new DeclarationExp(loc, declaration)) | |
| 272 { | |
| 273 } | |
| 274 | |
| 275 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp) | |
| 276 : ExpStatement(loc, exp) | |
| 277 { | |
| 278 } | |
| 279 | |
| 280 Statement *DeclarationStatement::syntaxCopy() | |
| 281 { | |
| 282 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy()); | |
| 283 return ds; | |
| 284 } | |
| 285 | |
| 286 void DeclarationStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 287 { | |
| 288 //printf("DeclarationStatement::scopeCode()\n"); | |
| 289 //print(); | |
| 290 | |
| 291 *sentry = NULL; | |
| 292 *sexception = NULL; | |
| 293 *sfinally = NULL; | |
| 294 | |
| 295 if (exp) | |
| 296 { | |
| 297 if (exp->op == TOKdeclaration) | |
| 298 { | |
| 299 DeclarationExp *de = (DeclarationExp *)(exp); | |
| 300 VarDeclaration *v = de->declaration->isVarDeclaration(); | |
| 301 if (v) | |
| 302 { Expression *e; | |
| 303 | |
| 304 e = v->callAutoDtor(); | |
| 305 if (e) | |
| 306 { | |
| 307 //printf("dtor is: "); e->print(); | |
| 308 *sfinally = new ExpStatement(loc, e); | |
| 309 } | |
| 310 } | |
| 311 } | |
| 312 } | |
| 313 } | |
| 314 | |
| 315 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 316 { | |
| 317 exp->toCBuffer(buf, hgs); | |
| 318 } | |
| 319 | |
| 320 | |
| 321 /******************************** CompoundStatement ***************************/ | |
| 322 | |
| 323 CompoundStatement::CompoundStatement(Loc loc, Statements *s) | |
| 324 : Statement(loc) | |
| 325 { | |
| 326 statements = s; | |
| 327 } | |
| 328 | |
| 329 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2) | |
| 330 : Statement(loc) | |
| 331 { | |
| 332 statements = new Statements(); | |
| 333 statements->reserve(2); | |
| 334 statements->push(s1); | |
| 335 statements->push(s2); | |
| 336 } | |
| 337 | |
| 338 Statement *CompoundStatement::syntaxCopy() | |
| 339 { | |
| 340 Statements *a = new Statements(); | |
| 341 a->setDim(statements->dim); | |
| 342 for (size_t i = 0; i < statements->dim; i++) | |
| 343 { Statement *s = (Statement *)statements->data[i]; | |
| 344 if (s) | |
| 345 s = s->syntaxCopy(); | |
| 346 a->data[i] = s; | |
| 347 } | |
| 348 CompoundStatement *cs = new CompoundStatement(loc, a); | |
| 349 return cs; | |
| 350 } | |
| 351 | |
| 352 | |
| 353 Statement *CompoundStatement::semantic(Scope *sc) | |
| 354 { Statement *s; | |
| 355 | |
| 356 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 357 | |
| 358 for (size_t i = 0; i < statements->dim; ) | |
| 359 { | |
| 360 s = (Statement *) statements->data[i]; | |
| 361 if (s) | |
| 362 { Statements *a = s->flatten(sc); | |
| 363 | |
| 364 if (a) | |
| 365 { | |
| 366 statements->remove(i); | |
| 367 statements->insert(i, a); | |
| 368 continue; | |
| 369 } | |
| 370 s = s->semantic(sc); | |
| 371 statements->data[i] = s; | |
| 372 if (s) | |
| 373 { | |
| 374 Statement *sentry; | |
| 375 Statement *sexception; | |
| 376 Statement *sfinally; | |
| 377 | |
| 378 s->scopeCode(&sentry, &sexception, &sfinally); | |
| 379 if (sentry) | |
| 380 { | |
| 381 sentry = sentry->semantic(sc); | |
| 382 statements->data[i] = sentry; | |
| 383 } | |
| 384 if (sexception) | |
| 385 { | |
| 386 if (i + 1 == statements->dim && !sfinally) | |
| 387 { | |
| 388 #if 1 | |
| 389 sexception = sexception->semantic(sc); | |
| 390 #else | |
| 391 statements->push(sexception); | |
| 392 if (sfinally) | |
| 393 // Assume sexception does not throw | |
| 394 statements->push(sfinally); | |
| 395 #endif | |
| 396 } | |
| 397 else | |
| 398 { | |
| 399 /* Rewrite: | |
| 400 * s; s1; s2; | |
| 401 * As: | |
| 402 * s; | |
| 403 * try { s1; s2; } | |
| 404 * catch (Object __o) | |
| 405 * { sexception; throw __o; } | |
| 406 */ | |
| 407 Statement *body; | |
| 408 Statements *a = new Statements(); | |
| 409 | |
| 410 for (int j = i + 1; j < statements->dim; j++) | |
| 411 { | |
| 412 a->push(statements->data[j]); | |
| 413 } | |
| 414 body = new CompoundStatement(0, a); | |
| 415 body = new ScopeStatement(0, body); | |
| 416 | |
| 417 static int num; | |
| 418 char name[3 + sizeof(num) * 3 + 1]; | |
| 419 sprintf(name, "__o%d", ++num); | |
| 420 Identifier *id = Lexer::idPool(name); | |
| 421 | |
| 422 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id)); | |
| 423 handler = new CompoundStatement(0, sexception, handler); | |
| 424 | |
| 425 Array *catches = new Array(); | |
| 426 Catch *ctch = new Catch(0, NULL, id, handler); | |
| 427 catches->push(ctch); | |
| 428 s = new TryCatchStatement(0, body, catches); | |
| 429 | |
| 430 if (sfinally) | |
| 431 s = new TryFinallyStatement(0, s, sfinally); | |
| 432 s = s->semantic(sc); | |
| 433 statements->setDim(i + 1); | |
| 434 statements->push(s); | |
| 435 break; | |
| 436 } | |
| 437 } | |
| 438 else if (sfinally) | |
| 439 { | |
| 440 if (0 && i + 1 == statements->dim) | |
| 441 { | |
| 442 statements->push(sfinally); | |
| 443 } | |
| 444 else | |
| 445 { | |
| 446 /* Rewrite: | |
| 447 * s; s1; s2; | |
| 448 * As: | |
| 449 * s; try { s1; s2; } finally { sfinally; } | |
| 450 */ | |
| 451 Statement *body; | |
| 452 Statements *a = new Statements(); | |
| 453 | |
| 454 for (int j = i + 1; j < statements->dim; j++) | |
| 455 { | |
| 456 a->push(statements->data[j]); | |
| 457 } | |
| 458 body = new CompoundStatement(0, a); | |
| 459 s = new TryFinallyStatement(0, body, sfinally); | |
| 460 s = s->semantic(sc); | |
| 461 statements->setDim(i + 1); | |
| 462 statements->push(s); | |
| 463 break; | |
| 464 } | |
| 465 } | |
| 466 } | |
| 467 } | |
| 468 i++; | |
| 469 } | |
|
232
092468448d25
[svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents:
215
diff
changeset
|
470 if (statements->dim == 1 && !isAsmBlockStatement()) |
| 159 | 471 return s; |
| 472 return this; | |
| 473 } | |
| 474 | |
| 475 Statements *CompoundStatement::flatten(Scope *sc) | |
| 476 { | |
| 477 return statements; | |
| 478 } | |
| 479 | |
| 480 ReturnStatement *CompoundStatement::isReturnStatement() | |
| 481 { int i; | |
| 482 ReturnStatement *rs = NULL; | |
| 483 | |
| 484 for (i = 0; i < statements->dim; i++) | |
| 485 { Statement *s; | |
| 486 | |
| 487 s = (Statement *) statements->data[i]; | |
| 488 if (s) | |
| 489 { | |
| 490 rs = s->isReturnStatement(); | |
| 491 if (rs) | |
| 492 break; | |
| 493 } | |
| 494 } | |
| 495 return rs; | |
| 496 } | |
| 497 | |
| 498 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 499 { int i; | |
| 500 | |
| 501 for (i = 0; i < statements->dim; i++) | |
| 502 { Statement *s; | |
| 503 | |
| 504 s = (Statement *) statements->data[i]; | |
| 505 if (s) | |
| 506 s->toCBuffer(buf, hgs); | |
| 507 } | |
| 508 } | |
| 509 | |
| 510 int CompoundStatement::usesEH() | |
| 511 { | |
| 512 for (int i = 0; i < statements->dim; i++) | |
| 513 { Statement *s; | |
| 514 | |
| 515 s = (Statement *) statements->data[i]; | |
| 516 if (s && s->usesEH()) | |
| 517 return TRUE; | |
| 518 } | |
| 519 return FALSE; | |
| 520 } | |
| 521 | |
| 522 int CompoundStatement::fallOffEnd() | |
| 523 { int falloff = TRUE; | |
| 524 | |
| 525 //printf("CompoundStatement::fallOffEnd() %s\n", toChars()); | |
| 526 for (int i = 0; i < statements->dim; i++) | |
| 527 { Statement *s = (Statement *)statements->data[i]; | |
| 528 | |
| 529 if (!s) | |
| 530 continue; | |
| 531 | |
| 532 if (!falloff && global.params.warnings && !s->comeFrom()) | |
| 533 { | |
|
215
a58d8f4b84df
[svn r231] Changed: warnings are no longer treated as an error.
lindquist
parents:
159
diff
changeset
|
534 warning("%s: statement is not reachable", s->loc.toChars()); |
| 159 | 535 } |
| 536 falloff = s->fallOffEnd(); | |
| 537 } | |
| 538 return falloff; | |
| 539 } | |
| 540 | |
| 541 int CompoundStatement::comeFrom() | |
| 542 { int comefrom = FALSE; | |
| 543 | |
| 544 //printf("CompoundStatement::comeFrom()\n"); | |
| 545 for (int i = 0; i < statements->dim; i++) | |
| 546 { Statement *s = (Statement *)statements->data[i]; | |
| 547 | |
| 548 if (!s) | |
| 549 continue; | |
| 550 | |
| 551 comefrom |= s->comeFrom(); | |
| 552 } | |
| 553 return comefrom; | |
| 554 } | |
| 555 | |
| 556 | |
| 557 /**************************** UnrolledLoopStatement ***************************/ | |
| 558 | |
| 559 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s) | |
| 560 : Statement(loc) | |
| 561 { | |
| 562 statements = s; | |
| 309 | 563 enclosinghandler = NULL; |
| 159 | 564 } |
| 565 | |
| 566 Statement *UnrolledLoopStatement::syntaxCopy() | |
| 567 { | |
| 568 Statements *a = new Statements(); | |
| 569 a->setDim(statements->dim); | |
| 570 for (size_t i = 0; i < statements->dim; i++) | |
| 571 { Statement *s = (Statement *)statements->data[i]; | |
| 572 if (s) | |
| 573 s = s->syntaxCopy(); | |
| 574 a->data[i] = s; | |
| 575 } | |
| 576 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
| 577 return cs; | |
| 578 } | |
| 579 | |
| 580 | |
| 581 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
| 582 { | |
| 583 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 584 | |
| 309 | 585 enclosinghandler = sc->tfOfTry; |
| 159 | 586 |
| 587 sc->noctor++; | |
| 588 Scope *scd = sc->push(); | |
| 589 scd->sbreak = this; | |
| 590 scd->scontinue = this; | |
| 591 | |
| 592 for (size_t i = 0; i < statements->dim; i++) | |
| 593 { | |
| 594 Statement *s = (Statement *) statements->data[i]; | |
| 595 if (s) | |
| 596 { | |
| 597 s = s->semantic(scd); | |
| 598 statements->data[i] = s; | |
| 599 } | |
| 600 } | |
| 601 | |
| 602 scd->pop(); | |
| 603 sc->noctor--; | |
| 604 return this; | |
| 605 } | |
| 606 | |
| 607 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 608 { | |
| 609 buf->writestring("unrolled {"); | |
| 610 buf->writenl(); | |
| 611 | |
| 612 for (size_t i = 0; i < statements->dim; i++) | |
| 613 { Statement *s; | |
| 614 | |
| 615 s = (Statement *) statements->data[i]; | |
| 616 if (s) | |
| 617 s->toCBuffer(buf, hgs); | |
| 618 } | |
| 619 | |
| 620 buf->writeByte('}'); | |
| 621 buf->writenl(); | |
| 622 } | |
| 623 | |
| 624 int UnrolledLoopStatement::hasBreak() | |
| 625 { | |
| 626 return TRUE; | |
| 627 } | |
| 628 | |
| 629 int UnrolledLoopStatement::hasContinue() | |
| 630 { | |
| 631 return TRUE; | |
| 632 } | |
| 633 | |
| 634 int UnrolledLoopStatement::usesEH() | |
| 635 { | |
| 636 for (size_t i = 0; i < statements->dim; i++) | |
| 637 { Statement *s; | |
| 638 | |
| 639 s = (Statement *) statements->data[i]; | |
| 640 if (s && s->usesEH()) | |
| 641 return TRUE; | |
| 642 } | |
| 643 return FALSE; | |
| 644 } | |
| 645 | |
| 646 int UnrolledLoopStatement::fallOffEnd() | |
| 647 { | |
| 648 //printf("UnrolledLoopStatement::fallOffEnd()\n"); | |
| 649 for (size_t i = 0; i < statements->dim; i++) | |
| 650 { Statement *s = (Statement *)statements->data[i]; | |
| 651 | |
| 652 if (s) | |
| 653 s->fallOffEnd(); | |
| 654 } | |
| 655 return TRUE; | |
| 656 } | |
| 657 | |
| 658 | |
| 659 int UnrolledLoopStatement::comeFrom() | |
| 660 { int comefrom = FALSE; | |
| 661 | |
| 662 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
| 663 for (size_t i = 0; i < statements->dim; i++) | |
| 664 { Statement *s = (Statement *)statements->data[i]; | |
| 665 | |
| 666 if (!s) | |
| 667 continue; | |
| 668 | |
| 669 comefrom |= s->comeFrom(); | |
| 670 } | |
| 671 return comefrom; | |
| 672 } | |
| 673 | |
| 674 | |
| 675 /******************************** ScopeStatement ***************************/ | |
| 676 | |
| 677 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
| 678 : Statement(loc) | |
| 679 { | |
| 680 this->statement = s; | |
| 681 } | |
| 682 | |
| 683 Statement *ScopeStatement::syntaxCopy() | |
| 684 { | |
| 685 Statement *s; | |
| 686 | |
| 687 s = statement ? statement->syntaxCopy() : NULL; | |
| 688 s = new ScopeStatement(loc, s); | |
| 689 return s; | |
| 690 } | |
| 691 | |
| 692 | |
| 693 Statement *ScopeStatement::semantic(Scope *sc) | |
| 694 { ScopeDsymbol *sym; | |
| 695 | |
| 696 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
| 697 if (statement) | |
| 698 { Statements *a; | |
| 699 | |
| 700 sym = new ScopeDsymbol(); | |
| 701 sym->parent = sc->scopesym; | |
| 702 sc = sc->push(sym); | |
| 703 | |
| 704 a = statement->flatten(sc); | |
| 705 if (a) | |
| 706 { | |
| 707 statement = new CompoundStatement(loc, a); | |
| 708 } | |
| 709 | |
| 710 statement = statement->semantic(sc); | |
| 711 if (statement) | |
| 712 { | |
| 713 Statement *sentry; | |
| 714 Statement *sexception; | |
| 715 Statement *sfinally; | |
| 716 | |
| 717 statement->scopeCode(&sentry, &sexception, &sfinally); | |
| 718 if (sfinally) | |
| 719 { | |
| 720 //printf("adding sfinally\n"); | |
| 721 statement = new CompoundStatement(loc, statement, sfinally); | |
| 722 } | |
| 723 } | |
| 724 | |
| 725 sc->pop(); | |
| 726 } | |
| 727 return this; | |
| 728 } | |
| 729 | |
| 730 int ScopeStatement::hasBreak() | |
| 731 { | |
| 732 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
| 733 return statement ? statement->hasBreak() : FALSE; | |
| 734 } | |
| 735 | |
| 736 int ScopeStatement::hasContinue() | |
| 737 { | |
| 738 return statement ? statement->hasContinue() : FALSE; | |
| 739 } | |
| 740 | |
| 741 int ScopeStatement::usesEH() | |
| 742 { | |
| 743 return statement ? statement->usesEH() : FALSE; | |
| 744 } | |
| 745 | |
| 746 int ScopeStatement::fallOffEnd() | |
| 747 { | |
| 748 return statement ? statement->fallOffEnd() : TRUE; | |
| 749 } | |
| 750 | |
| 751 int ScopeStatement::comeFrom() | |
| 752 { | |
| 753 //printf("ScopeStatement::comeFrom()\n"); | |
| 754 return statement ? statement->comeFrom() : FALSE; | |
| 755 } | |
| 756 | |
| 757 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 758 { | |
| 759 buf->writeByte('{'); | |
| 760 buf->writenl(); | |
| 761 | |
| 762 if (statement) | |
| 763 statement->toCBuffer(buf, hgs); | |
| 764 | |
| 765 buf->writeByte('}'); | |
| 766 buf->writenl(); | |
| 767 } | |
| 768 | |
| 769 /******************************** WhileStatement ***************************/ | |
| 770 | |
| 771 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
| 772 : Statement(loc) | |
| 773 { | |
| 774 condition = c; | |
| 775 body = b; | |
| 309 | 776 enclosinghandler = NULL; |
| 159 | 777 } |
| 778 | |
| 779 Statement *WhileStatement::syntaxCopy() | |
| 780 { | |
| 781 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 782 return s; | |
| 783 } | |
| 784 | |
| 785 | |
| 786 Statement *WhileStatement::semantic(Scope *sc) | |
| 787 { | |
| 788 #if 0 | |
| 789 if (condition->op == TOKmatch) | |
| 790 { | |
| 791 /* Rewrite while (condition) body as: | |
| 792 * if (condition) | |
| 793 * do | |
| 794 * body | |
| 795 * while ((_match = _match.opNext), _match); | |
| 796 */ | |
| 797 | |
| 798 Expression *ew = new IdentifierExp(0, Id::_match); | |
| 799 ew = new DotIdExp(0, ew, Id::next); | |
| 800 ew = new AssignExp(0, new IdentifierExp(0, Id::_match), ew); | |
| 801 ////ew = new EqualExp(TOKnotequal, 0, ew, new NullExp(0)); | |
| 802 Expression *ev = new IdentifierExp(0, Id::_match); | |
| 803 //ev = new CastExp(0, ev, Type::tvoidptr); | |
| 804 ew = new CommaExp(0, ew, ev); | |
| 805 Statement *sw = new DoStatement(loc, body, ew); | |
| 806 Statement *si = new IfStatement(loc, condition, sw, NULL); | |
| 807 return si->semantic(sc); | |
| 808 } | |
| 809 #endif | |
| 810 | |
| 309 | 811 enclosinghandler = sc->tfOfTry; |
| 159 | 812 |
| 813 condition = condition->semantic(sc); | |
| 814 condition = resolveProperties(sc, condition); | |
| 815 condition = condition->optimize(WANTvalue); | |
| 816 condition = condition->checkToBoolean(); | |
| 817 | |
| 818 sc->noctor++; | |
| 819 | |
| 820 Scope *scd = sc->push(); | |
| 821 scd->sbreak = this; | |
| 822 scd->scontinue = this; | |
| 823 if (body) | |
| 824 body = body->semantic(scd); | |
| 825 scd->pop(); | |
| 826 | |
| 827 sc->noctor--; | |
| 828 | |
| 829 return this; | |
| 830 } | |
| 831 | |
| 832 int WhileStatement::hasBreak() | |
| 833 { | |
| 834 return TRUE; | |
| 835 } | |
| 836 | |
| 837 int WhileStatement::hasContinue() | |
| 838 { | |
| 839 return TRUE; | |
| 840 } | |
| 841 | |
| 842 int WhileStatement::usesEH() | |
| 843 { | |
| 844 return body ? body->usesEH() : 0; | |
| 845 } | |
| 846 | |
| 847 int WhileStatement::fallOffEnd() | |
| 848 { | |
| 849 if (body) | |
| 850 body->fallOffEnd(); | |
| 851 return TRUE; | |
| 852 } | |
| 853 | |
| 854 int WhileStatement::comeFrom() | |
| 855 { | |
| 856 if (body) | |
| 857 return body->comeFrom(); | |
| 858 return FALSE; | |
| 859 } | |
| 860 | |
| 861 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 862 { | |
| 863 buf->writestring("while ("); | |
| 864 condition->toCBuffer(buf, hgs); | |
| 865 buf->writebyte(')'); | |
| 866 buf->writenl(); | |
| 867 if (body) | |
| 868 body->toCBuffer(buf, hgs); | |
| 869 } | |
| 870 | |
| 871 /******************************** DoStatement ***************************/ | |
| 872 | |
| 873 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
| 874 : Statement(loc) | |
| 875 { | |
| 876 body = b; | |
| 877 condition = c; | |
| 309 | 878 enclosinghandler = NULL; |
| 159 | 879 } |
| 880 | |
| 881 Statement *DoStatement::syntaxCopy() | |
| 882 { | |
| 883 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
| 884 return s; | |
| 885 } | |
| 886 | |
| 887 | |
| 888 Statement *DoStatement::semantic(Scope *sc) | |
| 889 { | |
| 309 | 890 enclosinghandler = sc->tfOfTry; |
| 159 | 891 |
| 892 sc->noctor++; | |
| 893 if (body) | |
| 894 body = body->semanticScope(sc, this, this); | |
| 895 sc->noctor--; | |
| 896 condition = condition->semantic(sc); | |
| 897 condition = resolveProperties(sc, condition); | |
| 898 condition = condition->optimize(WANTvalue); | |
| 899 | |
| 900 condition = condition->checkToBoolean(); | |
| 901 | |
| 902 return this; | |
| 903 } | |
| 904 | |
| 905 int DoStatement::hasBreak() | |
| 906 { | |
| 907 return TRUE; | |
| 908 } | |
| 909 | |
| 910 int DoStatement::hasContinue() | |
| 911 { | |
| 912 return TRUE; | |
| 913 } | |
| 914 | |
| 915 int DoStatement::usesEH() | |
| 916 { | |
| 917 return body ? body->usesEH() : 0; | |
| 918 } | |
| 919 | |
| 920 int DoStatement::fallOffEnd() | |
| 921 { | |
| 922 if (body) | |
| 923 body->fallOffEnd(); | |
| 924 return TRUE; | |
| 925 } | |
| 926 | |
| 927 int DoStatement::comeFrom() | |
| 928 { | |
| 929 if (body) | |
| 930 return body->comeFrom(); | |
| 931 return FALSE; | |
| 932 } | |
| 933 | |
| 934 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 935 { | |
| 936 buf->writestring("do"); | |
| 937 buf->writenl(); | |
| 938 if (body) | |
| 939 body->toCBuffer(buf, hgs); | |
| 940 buf->writestring("while ("); | |
| 941 condition->toCBuffer(buf, hgs); | |
| 942 buf->writebyte(')'); | |
| 943 } | |
| 944 | |
| 945 /******************************** ForStatement ***************************/ | |
| 946 | |
| 947 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
| 948 : Statement(loc) | |
| 949 { | |
| 950 this->init = init; | |
| 951 this->condition = condition; | |
| 952 this->increment = increment; | |
| 953 this->body = body; | |
| 309 | 954 this->enclosinghandler = NULL; |
| 159 | 955 } |
| 956 | |
| 957 Statement *ForStatement::syntaxCopy() | |
| 958 { | |
| 959 Statement *i = NULL; | |
| 960 if (init) | |
| 961 i = init->syntaxCopy(); | |
| 962 Expression *c = NULL; | |
| 963 if (condition) | |
| 964 c = condition->syntaxCopy(); | |
| 965 Expression *inc = NULL; | |
| 966 if (increment) | |
| 967 inc = increment->syntaxCopy(); | |
| 968 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
| 969 return s; | |
| 970 } | |
| 971 | |
| 972 Statement *ForStatement::semantic(Scope *sc) | |
| 973 { | |
| 309 | 974 enclosinghandler = sc->tfOfTry; |
| 159 | 975 |
| 976 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 977 sym->parent = sc->scopesym; | |
| 978 sc = sc->push(sym); | |
| 979 if (init) | |
| 980 init = init->semantic(sc); | |
| 981 if (!condition) | |
| 982 // Use a default value | |
| 983 condition = new IntegerExp(loc, 1, Type::tboolean); | |
| 984 sc->noctor++; | |
| 985 condition = condition->semantic(sc); | |
| 986 condition = resolveProperties(sc, condition); | |
| 987 condition = condition->optimize(WANTvalue); | |
| 988 condition = condition->checkToBoolean(); | |
| 989 if (increment) | |
| 990 increment = increment->semantic(sc); | |
| 991 | |
| 992 sc->sbreak = this; | |
| 993 sc->scontinue = this; | |
| 994 body = body->semantic(sc); | |
| 995 sc->noctor--; | |
| 996 | |
| 997 sc->pop(); | |
| 998 return this; | |
| 999 } | |
| 1000 | |
| 1001 void ForStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 1002 { | |
| 1003 //printf("ForStatement::scopeCode()\n"); | |
| 1004 //print(); | |
| 1005 if (init) | |
| 1006 init->scopeCode(sentry, sexception, sfinally); | |
| 1007 else | |
| 1008 Statement::scopeCode(sentry, sexception, sfinally); | |
| 1009 } | |
| 1010 | |
| 1011 int ForStatement::hasBreak() | |
| 1012 { | |
| 1013 //printf("ForStatement::hasBreak()\n"); | |
| 1014 return TRUE; | |
| 1015 } | |
| 1016 | |
| 1017 int ForStatement::hasContinue() | |
| 1018 { | |
| 1019 return TRUE; | |
| 1020 } | |
| 1021 | |
| 1022 int ForStatement::usesEH() | |
| 1023 { | |
| 1024 return (init && init->usesEH()) || body->usesEH(); | |
| 1025 } | |
| 1026 | |
| 1027 int ForStatement::fallOffEnd() | |
| 1028 { | |
| 1029 if (body) | |
| 1030 body->fallOffEnd(); | |
| 1031 return TRUE; | |
| 1032 } | |
| 1033 | |
| 1034 int ForStatement::comeFrom() | |
| 1035 { | |
| 1036 //printf("ForStatement::comeFrom()\n"); | |
| 1037 if (body) | |
| 1038 { int result = body->comeFrom(); | |
| 1039 //printf("result = %d\n", result); | |
| 1040 return result; | |
| 1041 } | |
| 1042 return FALSE; | |
| 1043 } | |
| 1044 | |
| 1045 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1046 { | |
| 1047 buf->writestring("for ("); | |
| 1048 if (init) | |
| 1049 { | |
| 1050 hgs->FLinit.init++; | |
| 1051 hgs->FLinit.decl = 0; | |
| 1052 init->toCBuffer(buf, hgs); | |
| 1053 if (hgs->FLinit.decl > 0) | |
| 1054 buf->writebyte(';'); | |
| 1055 hgs->FLinit.decl = 0; | |
| 1056 hgs->FLinit.init--; | |
| 1057 } | |
| 1058 else | |
| 1059 buf->writebyte(';'); | |
| 1060 if (condition) | |
| 1061 { buf->writebyte(' '); | |
| 1062 condition->toCBuffer(buf, hgs); | |
| 1063 } | |
| 1064 buf->writebyte(';'); | |
| 1065 if (increment) | |
| 1066 { buf->writebyte(' '); | |
| 1067 increment->toCBuffer(buf, hgs); | |
| 1068 } | |
| 1069 buf->writebyte(')'); | |
| 1070 buf->writenl(); | |
| 1071 buf->writebyte('{'); | |
| 1072 buf->writenl(); | |
| 1073 body->toCBuffer(buf, hgs); | |
| 1074 buf->writebyte('}'); | |
| 1075 buf->writenl(); | |
| 1076 } | |
| 1077 | |
| 1078 /******************************** ForeachStatement ***************************/ | |
| 1079 | |
| 1080 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Arguments *arguments, | |
| 1081 Expression *aggr, Statement *body) | |
| 1082 : Statement(loc) | |
| 1083 { | |
| 1084 this->op = op; | |
| 1085 this->arguments = arguments; | |
| 1086 this->aggr = aggr; | |
| 1087 this->body = body; | |
| 309 | 1088 this->enclosinghandler = NULL; |
| 159 | 1089 |
| 1090 this->key = NULL; | |
| 1091 this->value = NULL; | |
| 1092 | |
| 1093 this->func = NULL; | |
| 1094 } | |
| 1095 | |
| 1096 Statement *ForeachStatement::syntaxCopy() | |
| 1097 { | |
| 1098 Arguments *args = Argument::arraySyntaxCopy(arguments); | |
| 1099 Expression *exp = aggr->syntaxCopy(); | |
| 1100 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, | |
| 1101 body ? body->syntaxCopy() : NULL); | |
| 1102 return s; | |
| 1103 } | |
| 1104 | |
| 1105 Statement *ForeachStatement::semantic(Scope *sc) | |
| 1106 { | |
| 1107 //printf("ForeachStatement::semantic() %p\n", this); | |
| 1108 ScopeDsymbol *sym; | |
| 1109 Statement *s = this; | |
| 1110 int dim = arguments->dim; | |
| 1111 int i; | |
| 1112 TypeAArray *taa = NULL; | |
| 1113 | |
| 1114 Type *tn = NULL; | |
| 1115 Type *tnv = NULL; | |
| 1116 | |
| 309 | 1117 enclosinghandler = sc->tfOfTry; |
| 159 | 1118 |
| 1119 func = sc->func; | |
| 1120 if (func->fes) | |
| 1121 func = func->fes->func; | |
| 1122 | |
| 1123 aggr = aggr->semantic(sc); | |
| 1124 aggr = resolveProperties(sc, aggr); | |
| 1125 if (!aggr->type) | |
| 1126 { | |
| 1127 error("invalid foreach aggregate %s", aggr->toChars()); | |
| 1128 return this; | |
| 1129 } | |
| 1130 | |
| 1131 inferApplyArgTypes(op, arguments, aggr); | |
| 1132 | |
| 1133 /* Check for inference errors | |
| 1134 */ | |
| 1135 if (dim != arguments->dim) | |
| 1136 { | |
| 1137 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
| 1138 error("cannot uniquely infer foreach argument types"); | |
| 1139 return this; | |
| 1140 } | |
| 1141 | |
| 1142 Type *tab = aggr->type->toBasetype(); | |
| 1143 | |
| 1144 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
| 1145 { | |
| 1146 if (dim < 1 || dim > 2) | |
| 1147 { | |
| 1148 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
| 1149 return s; | |
| 1150 } | |
| 1151 | |
| 1152 TypeTuple *tuple = (TypeTuple *)tab; | |
| 1153 Statements *statements = new Statements(); | |
| 1154 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
| 1155 size_t n; | |
| 1156 TupleExp *te = NULL; | |
| 1157 if (aggr->op == TOKtuple) // expression tuple | |
| 1158 { te = (TupleExp *)aggr; | |
| 1159 n = te->exps->dim; | |
| 1160 } | |
| 1161 else if (aggr->op == TOKtype) // type tuple | |
| 1162 { | |
| 1163 n = Argument::dim(tuple->arguments); | |
| 1164 } | |
| 1165 else | |
| 1166 assert(0); | |
| 1167 for (size_t j = 0; j < n; j++) | |
| 1168 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
| 1169 Expression *e; | |
| 1170 Type *t; | |
| 1171 if (te) | |
| 1172 e = (Expression *)te->exps->data[k]; | |
| 1173 else | |
| 1174 t = Argument::getNth(tuple->arguments, k)->type; | |
| 1175 Argument *arg = (Argument *)arguments->data[0]; | |
| 1176 Statements *st = new Statements(); | |
| 1177 | |
| 1178 if (dim == 2) | |
| 1179 { // Declare key | |
| 1180 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1181 error("no storage class for key %s", arg->ident->toChars()); | |
| 1182 TY keyty = arg->type->ty; | |
|
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1183 if (global.params.is64bit) |
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1184 { |
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1185 if (keyty != Tint32 && keyty != Tuns32 && keyty != Tint64 && keyty != Tuns64) |
|
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lindquist
parents:
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1186 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1187 error("foreach: key type must be int, uint, long or ulong, not %s", key->type->toChars()); |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1188 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1189 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1190 else if (keyty != Tint32 && keyty != Tuns32) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1191 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1192 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
665b81613475
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262
diff
changeset
|
1193 } |
| 159 | 1194 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); |
| 1195 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1196 var->storage_class |= STCconst; | |
| 1197 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1198 st->push(new ExpStatement(loc, de)); | |
| 1199 arg = (Argument *)arguments->data[1]; // value | |
| 1200 } | |
| 1201 // Declare value | |
| 1202 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1203 error("no storage class for value %s", arg->ident->toChars()); | |
| 1204 Dsymbol *var; | |
| 1205 if (te) | |
| 1206 { | |
| 1207 if (e->type->toBasetype()->ty == Tfunction && | |
| 1208 e->op == TOKvar) | |
| 1209 { VarExp *ve = (VarExp *)e; | |
| 1210 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
| 1211 } | |
| 1212 else | |
| 1213 { | |
| 1214 arg->type = e->type; | |
| 1215 Initializer *ie = new ExpInitializer(0, e); | |
| 1216 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1217 if (e->isConst()) | |
| 1218 v->storage_class |= STCconst; | |
| 1219 #if V2 | |
| 1220 else | |
| 1221 v->storage_class |= STCfinal; | |
| 1222 #endif | |
| 1223 var = v; | |
| 1224 } | |
| 1225 } | |
| 1226 else | |
| 1227 { | |
| 1228 var = new AliasDeclaration(loc, arg->ident, t); | |
| 1229 } | |
| 1230 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1231 st->push(new ExpStatement(loc, de)); | |
| 1232 | |
| 1233 st->push(body->syntaxCopy()); | |
| 1234 s = new CompoundStatement(loc, st); | |
| 1235 s = new ScopeStatement(loc, s); | |
| 1236 statements->push(s); | |
| 1237 } | |
| 1238 | |
| 1239 s = new UnrolledLoopStatement(loc, statements); | |
| 1240 s = s->semantic(sc); | |
| 1241 return s; | |
| 1242 } | |
| 1243 | |
| 1244 for (i = 0; i < dim; i++) | |
| 1245 { Argument *arg = (Argument *)arguments->data[i]; | |
| 1246 if (!arg->type) | |
| 1247 { | |
| 1248 error("cannot infer type for %s", arg->ident->toChars()); | |
| 1249 return this; | |
| 1250 } | |
| 1251 } | |
| 1252 | |
| 1253 sym = new ScopeDsymbol(); | |
| 1254 sym->parent = sc->scopesym; | |
| 1255 sc = sc->push(sym); | |
| 1256 | |
| 1257 sc->noctor++; | |
| 1258 | |
| 1259 switch (tab->ty) | |
| 1260 { | |
| 1261 case Tarray: | |
| 1262 case Tsarray: | |
| 1263 if (dim < 1 || dim > 2) | |
| 1264 { | |
| 1265 error("only one or two arguments for array foreach"); | |
| 1266 break; | |
| 1267 } | |
| 1268 | |
| 1269 /* Look for special case of parsing char types out of char type | |
| 1270 * array. | |
| 1271 */ | |
| 1272 tn = tab->nextOf()->toBasetype(); | |
| 1273 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) | |
| 1274 { Argument *arg; | |
| 1275 | |
| 1276 i = (dim == 1) ? 0 : 1; // index of value | |
| 1277 arg = (Argument *)arguments->data[i]; | |
| 1278 arg->type = arg->type->semantic(loc, sc); | |
| 1279 tnv = arg->type->toBasetype(); | |
| 1280 if (tnv->ty != tn->ty && | |
| 1281 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
| 1282 { | |
| 1283 if (arg->storageClass & STCref) | |
| 1284 error("foreach: value of UTF conversion cannot be ref"); | |
| 1285 if (dim == 2) | |
| 1286 { arg = (Argument *)arguments->data[0]; | |
| 1287 if (arg->storageClass & STCref) | |
| 1288 error("foreach: key cannot be ref"); | |
| 1289 } | |
| 1290 goto Lapply; | |
| 1291 } | |
| 1292 } | |
| 1293 | |
| 1294 for (i = 0; i < dim; i++) | |
| 1295 { // Declare args | |
| 1296 Argument *arg = (Argument *)arguments->data[i]; | |
| 1297 VarDeclaration *var; | |
| 1298 | |
| 1299 var = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
| 1300 var->storage_class |= STCforeach; | |
| 1301 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
| 1302 #if 1 | |
| 1303 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1304 de->semantic(sc); | |
| 1305 #else | |
| 1306 var->semantic(sc); | |
| 1307 if (!sc->insert(var)) | |
| 1308 error("%s already defined", var->ident->toChars()); | |
| 1309 #endif | |
| 1310 if (dim == 2 && i == 0) | |
| 1311 key = var; | |
| 1312 else | |
| 1313 value = var; | |
| 1314 } | |
| 1315 | |
| 1316 sc->sbreak = this; | |
| 1317 sc->scontinue = this; | |
| 1318 body = body->semantic(sc); | |
| 1319 | |
| 1320 if (!value->type->equals(tab->next)) | |
| 1321 { | |
| 1322 if (aggr->op == TOKstring) | |
| 1323 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
| 1324 else | |
| 1325 error("foreach: %s is not an array of %s", tab->toChars(), value->type->toChars()); | |
| 1326 } | |
| 1327 | |
|
275
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|
1328 if (key) |
|
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|
1329 { |
|
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|
1330 if (global.params.is64bit) |
|
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|
1331 { |
|
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1332 if (key->type->ty != Tint32 && key->type->ty != Tuns32 && key->type->ty != Tint64 && key->type->ty != Tuns64) |
|
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1333 { |
|
665b81613475
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|
1334 error("foreach: key type must be int, uint, long or ulong, not %s", key->type->toChars()); |
|
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1335 } |
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1336 } |
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1337 else if (key->type->ty != Tint32 && key->type->ty != Tuns32) |
|
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1338 { |
|
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|
1339 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
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1340 } |
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|
1341 } |
| 159 | 1342 |
| 1343 if (key && key->storage_class & (STCout | STCref)) | |
| 1344 error("foreach: key cannot be out or ref"); | |
| 1345 break; | |
| 1346 | |
| 1347 case Taarray: | |
| 1348 taa = (TypeAArray *)tab; | |
| 1349 if (dim < 1 || dim > 2) | |
| 1350 { | |
| 1351 error("only one or two arguments for associative array foreach"); | |
| 1352 break; | |
| 1353 } | |
| 1354 if (op == TOKforeach_reverse) | |
| 1355 { | |
| 1356 error("no reverse iteration on associative arrays"); | |
| 1357 } | |
| 1358 goto Lapply; | |
| 1359 | |
| 1360 case Tclass: | |
| 1361 case Tstruct: | |
| 1362 case Tdelegate: | |
| 1363 Lapply: | |
| 1364 { FuncDeclaration *fdapply; | |
| 1365 Arguments *args; | |
| 1366 Expression *ec; | |
| 1367 Expression *e; | |
| 1368 FuncLiteralDeclaration *fld; | |
| 1369 Argument *a; | |
| 1370 Type *t; | |
| 1371 Expression *flde; | |
| 1372 Identifier *id; | |
| 1373 Type *tret; | |
| 1374 | |
| 1375 tret = func->type->nextOf(); | |
| 1376 | |
| 1377 // Need a variable to hold value from any return statements in body. | |
| 1378 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1379 { VarDeclaration *v; | |
| 1380 | |
| 1381 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 1382 v->noauto = 1; | |
| 1383 v->semantic(sc); | |
| 1384 if (!sc->insert(v)) | |
| 1385 assert(0); | |
| 1386 v->parent = sc->func; | |
| 1387 sc->func->vresult = v; | |
| 1388 } | |
| 1389 | |
| 1390 /* Turn body into the function literal: | |
| 1391 * int delegate(ref T arg) { body } | |
| 1392 */ | |
| 1393 args = new Arguments(); | |
| 1394 for (i = 0; i < dim; i++) | |
| 1395 { Argument *arg = (Argument *)arguments->data[i]; | |
| 1396 | |
| 1397 arg->type = arg->type->semantic(loc, sc); | |
| 1398 if (arg->storageClass & STCref) | |
| 1399 id = arg->ident; | |
| 1400 else | |
| 1401 { // Make a copy of the ref argument so it isn't | |
| 1402 // a reference. | |
| 1403 VarDeclaration *v; | |
| 1404 Initializer *ie; | |
| 1405 char applyArg[10 + sizeof(i)*3 + 1]; | |
| 1406 | |
| 1407 sprintf(applyArg, "__applyArg%d", i); | |
| 1408 id = Lexer::idPool(applyArg); | |
| 1409 | |
| 1410 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1411 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1412 s = new DeclarationStatement(0, v); | |
| 1413 body = new CompoundStatement(loc, s, body); | |
| 1414 } | |
| 1415 a = new Argument(STCref, arg->type, id, NULL); | |
| 1416 args->push(a); | |
| 1417 } | |
| 1418 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1419 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1420 fld->fbody = body; | |
| 1421 flde = new FuncExp(loc, fld); | |
| 1422 flde = flde->semantic(sc); | |
| 1423 | |
| 1424 // Resolve any forward referenced goto's | |
| 1425 for (int i = 0; i < gotos.dim; i++) | |
| 1426 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1427 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1428 | |
| 1429 if (!gs->label->statement) | |
| 1430 { // 'Promote' it to this scope, and replace with a return | |
| 1431 cases.push(gs); | |
| 1432 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1433 cs->statements->data[0] = (void *)s; | |
| 1434 } | |
| 1435 } | |
| 1436 | |
| 1437 if (tab->ty == Taarray) | |
| 1438 { | |
| 1439 // Check types | |
| 1440 Argument *arg = (Argument *)arguments->data[0]; | |
| 1441 if (dim == 2) | |
| 1442 { | |
| 1443 if (arg->storageClass & STCref) | |
| 1444 error("foreach: index cannot be ref"); | |
| 1445 if (!arg->type->equals(taa->index)) | |
| 1446 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
| 1447 arg = (Argument *)arguments->data[1]; | |
| 1448 } | |
| 1449 if (!arg->type->equals(taa->nextOf())) | |
| 1450 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1451 | |
| 1452 /* Call: | |
| 1453 * _aaApply(aggr, keysize, flde) | |
| 1454 */ | |
| 1455 if (dim == 2) | |
| 1456 fdapply = FuncDeclaration::genCfunc(Type::tindex, "_aaApply2"); | |
| 1457 else | |
| 1458 fdapply = FuncDeclaration::genCfunc(Type::tindex, "_aaApply"); | |
| 1459 fdapply->runTimeHack = true; | |
| 1460 ec = new VarExp(0, fdapply); | |
| 1461 Expressions *exps = new Expressions(); | |
| 1462 exps->push(aggr); | |
| 1463 size_t keysize = taa->key->size(); | |
| 1464 keysize = (keysize + 3) & ~3; | |
| 1465 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); | |
| 1466 exps->push(flde); | |
| 1467 e = new CallExp(loc, ec, exps); | |
| 1468 e->type = Type::tindex; // don't run semantic() on e | |
| 1469 } | |
| 1470 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1471 { | |
| 1472 /* Call: | |
| 1473 * _aApply(aggr, flde) | |
| 1474 */ | |
| 1475 static char fntab[9][3] = | |
| 1476 { "cc","cw","cd", | |
| 1477 "wc","cc","wd", | |
| 1478 "dc","dw","dd" | |
| 1479 }; | |
| 1480 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1481 int flag; | |
| 1482 | |
| 1483 switch (tn->ty) | |
| 1484 { | |
| 1485 case Tchar: flag = 0; break; | |
| 1486 case Twchar: flag = 3; break; | |
| 1487 case Tdchar: flag = 6; break; | |
| 1488 default: assert(0); | |
| 1489 } | |
| 1490 switch (tnv->ty) | |
| 1491 { | |
| 1492 case Tchar: flag += 0; break; | |
| 1493 case Twchar: flag += 1; break; | |
| 1494 case Tdchar: flag += 2; break; | |
| 1495 default: assert(0); | |
| 1496 } | |
| 1497 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
| 1498 int j = sprintf(fdname, "_aApply%s%.*s%d", r, 2, fntab[flag], dim); | |
| 1499 assert(j < sizeof(fdname)); | |
| 1500 fdapply = FuncDeclaration::genCfunc(Type::tindex, fdname); | |
| 1501 fdapply->runTimeHack = true; | |
| 1502 | |
| 1503 ec = new VarExp(0, fdapply); | |
| 1504 Expressions *exps = new Expressions(); | |
| 1505 if (tab->ty == Tsarray) | |
| 1506 aggr = aggr->castTo(sc, tn->arrayOf()); | |
| 1507 exps->push(aggr); | |
| 1508 exps->push(flde); | |
| 1509 e = new CallExp(loc, ec, exps); | |
| 1510 e->type = Type::tindex; // don't run semantic() on e | |
| 1511 } | |
| 1512 else if (tab->ty == Tdelegate) | |
| 1513 { | |
| 1514 /* Call: | |
| 1515 * aggr(flde) | |
| 1516 */ | |
| 1517 Expressions *exps = new Expressions(); | |
| 1518 exps->push(flde); | |
| 1519 e = new CallExp(loc, aggr, exps); | |
| 1520 e = e->semantic(sc); | |
| 1521 if (e->type != Type::tint32) | |
| 1522 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1523 } | |
| 1524 else | |
| 1525 { | |
| 1526 /* Call: | |
| 1527 * aggr.apply(flde) | |
| 1528 */ | |
| 1529 ec = new DotIdExp(loc, aggr, | |
| 1530 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1531 : Id::apply); | |
| 1532 Expressions *exps = new Expressions(); | |
| 1533 exps->push(flde); | |
| 1534 e = new CallExp(loc, ec, exps); | |
| 1535 e = e->semantic(sc); | |
| 1536 if (e->type != Type::tint32) | |
| 1537 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1538 } | |
| 1539 | |
| 1540 if (!cases.dim) | |
| 1541 // Easy case, a clean exit from the loop | |
| 1542 s = new ExpStatement(loc, e); | |
| 1543 else | |
| 1544 { // Construct a switch statement around the return value | |
| 1545 // of the apply function. | |
| 1546 Statements *a = new Statements(); | |
| 1547 | |
| 1548 // default: break; takes care of cases 0 and 1 | |
| 1549 s = new BreakStatement(0, NULL); | |
| 1550 s = new DefaultStatement(0, s); | |
| 1551 a->push(s); | |
| 1552 | |
| 1553 // cases 2... | |
| 1554 for (int i = 0; i < cases.dim; i++) | |
| 1555 { | |
| 1556 s = (Statement *)cases.data[i]; | |
| 1557 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1558 a->push(s); | |
| 1559 } | |
| 1560 | |
| 1561 s = new CompoundStatement(loc, a); | |
| 1562 s = new SwitchStatement(loc, e, s); | |
| 1563 s = s->semantic(sc); | |
| 1564 } | |
| 1565 break; | |
| 1566 } | |
| 1567 | |
| 1568 default: | |
| 1569 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1570 break; | |
| 1571 } | |
| 1572 sc->noctor--; | |
| 1573 sc->pop(); | |
| 1574 return s; | |
| 1575 } | |
| 1576 | |
| 1577 int ForeachStatement::hasBreak() | |
| 1578 { | |
| 1579 return TRUE; | |
| 1580 } | |
| 1581 | |
| 1582 int ForeachStatement::hasContinue() | |
| 1583 { | |
| 1584 return TRUE; | |
| 1585 } | |
| 1586 | |
| 1587 int ForeachStatement::usesEH() | |
| 1588 { | |
| 1589 return body->usesEH(); | |
| 1590 } | |
| 1591 | |
| 1592 int ForeachStatement::fallOffEnd() | |
| 1593 { | |
| 1594 if (body) | |
| 1595 body->fallOffEnd(); | |
| 1596 return TRUE; | |
| 1597 } | |
| 1598 | |
| 1599 int ForeachStatement::comeFrom() | |
| 1600 { | |
| 1601 if (body) | |
| 1602 return body->comeFrom(); | |
| 1603 return FALSE; | |
| 1604 } | |
| 1605 | |
| 1606 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1607 { | |
| 1608 buf->writestring(Token::toChars(op)); | |
| 1609 buf->writestring(" ("); | |
| 1610 int i; | |
| 1611 for (int i = 0; i < arguments->dim; i++) | |
| 1612 { | |
| 1613 Argument *a = (Argument *)arguments->data[i]; | |
| 1614 if (i) | |
| 1615 buf->writestring(", "); | |
| 1616 if (a->storageClass & STCref) | |
| 1617 buf->writestring((global.params.Dversion == 1) | |
| 1618 ? (char*)"inout " : (char*)"ref "); | |
| 1619 if (a->type) | |
| 1620 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1621 else | |
| 1622 buf->writestring(a->ident->toChars()); | |
| 1623 } | |
| 1624 buf->writestring("; "); | |
| 1625 aggr->toCBuffer(buf, hgs); | |
| 1626 buf->writebyte(')'); | |
| 1627 buf->writenl(); | |
| 1628 buf->writebyte('{'); | |
| 1629 buf->writenl(); | |
| 1630 if (body) | |
| 1631 body->toCBuffer(buf, hgs); | |
| 1632 buf->writebyte('}'); | |
| 1633 buf->writenl(); | |
| 1634 } | |
| 1635 | |
| 1636 /******************************** IfStatement ***************************/ | |
| 1637 | |
| 1638 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody) | |
| 1639 : Statement(loc) | |
| 1640 { | |
| 1641 this->arg = arg; | |
| 1642 this->condition = condition; | |
| 1643 this->ifbody = ifbody; | |
| 1644 this->elsebody = elsebody; | |
| 1645 this->match = NULL; | |
| 1646 } | |
| 1647 | |
| 1648 Statement *IfStatement::syntaxCopy() | |
| 1649 { | |
| 1650 Statement *i = NULL; | |
| 1651 if (ifbody) | |
| 1652 i = ifbody->syntaxCopy(); | |
| 1653 | |
| 1654 Statement *e = NULL; | |
| 1655 if (elsebody) | |
| 1656 e = elsebody->syntaxCopy(); | |
| 1657 | |
| 1658 Argument *a = arg ? arg->syntaxCopy() : NULL; | |
| 1659 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); | |
| 1660 return s; | |
| 1661 } | |
| 1662 | |
| 1663 Statement *IfStatement::semantic(Scope *sc) | |
| 1664 { | |
| 1665 condition = condition->semantic(sc); | |
| 1666 condition = resolveProperties(sc, condition); | |
| 1667 condition = condition->checkToBoolean(); | |
| 1668 | |
| 1669 // If we can short-circuit evaluate the if statement, don't do the | |
| 1670 // semantic analysis of the skipped code. | |
| 1671 // This feature allows a limited form of conditional compilation. | |
| 1672 condition = condition->optimize(WANTflags); | |
| 1673 | |
| 1674 // Evaluate at runtime | |
| 1675 unsigned cs0 = sc->callSuper; | |
| 1676 unsigned cs1; | |
| 1677 | |
| 1678 Scope *scd; | |
| 1679 if (arg) | |
| 1680 { /* Declare arg, which we will set to be the | |
| 1681 * result of condition. | |
| 1682 */ | |
| 1683 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1684 sym->parent = sc->scopesym; | |
| 1685 scd = sc->push(sym); | |
| 1686 | |
| 1687 Type *t = arg->type ? arg->type : condition->type; | |
| 1688 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
| 1689 match->noauto = 1; | |
| 1690 match->semantic(scd); | |
| 1691 if (!scd->insert(match)) | |
| 1692 assert(0); | |
| 1693 match->parent = sc->func; | |
| 1694 | |
| 1695 /* Generate: | |
| 1696 * (arg = condition) | |
| 1697 */ | |
| 1698 VarExp *v = new VarExp(0, match); | |
| 1699 condition = new AssignExp(loc, v, condition); | |
| 1700 condition = condition->semantic(scd); | |
| 1701 } | |
| 1702 else | |
| 1703 scd = sc->push(); | |
| 1704 ifbody = ifbody->semantic(scd); | |
| 1705 scd->pop(); | |
| 1706 | |
| 1707 cs1 = sc->callSuper; | |
| 1708 sc->callSuper = cs0; | |
| 1709 if (elsebody) | |
| 1710 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 1711 sc->mergeCallSuper(loc, cs1); | |
| 1712 | |
| 1713 return this; | |
| 1714 } | |
| 1715 | |
| 1716 int IfStatement::usesEH() | |
| 1717 { | |
| 1718 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 1719 } | |
| 1720 | |
| 1721 int IfStatement::fallOffEnd() | |
| 1722 { | |
| 1723 if (!ifbody || ifbody->fallOffEnd() || | |
| 1724 !elsebody || elsebody->fallOffEnd()) | |
| 1725 return TRUE; | |
| 1726 return FALSE; | |
| 1727 } | |
| 1728 | |
| 1729 | |
| 1730 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1731 { | |
| 1732 buf->writestring("if ("); | |
| 1733 if (arg) | |
| 1734 { | |
| 1735 if (arg->type) | |
| 1736 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 1737 else | |
| 1738 buf->writestring(arg->ident->toChars()); | |
| 1739 buf->writebyte(';'); | |
| 1740 } | |
| 1741 condition->toCBuffer(buf, hgs); | |
| 1742 buf->writebyte(')'); | |
| 1743 buf->writenl(); | |
| 1744 ifbody->toCBuffer(buf, hgs); | |
| 1745 if (elsebody) | |
| 1746 { buf->writestring("else"); | |
| 1747 buf->writenl(); | |
| 1748 elsebody->toCBuffer(buf, hgs); | |
| 1749 } | |
| 1750 } | |
| 1751 | |
| 1752 /******************************** ConditionalStatement ***************************/ | |
| 1753 | |
| 1754 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 1755 : Statement(loc) | |
| 1756 { | |
| 1757 this->condition = condition; | |
| 1758 this->ifbody = ifbody; | |
| 1759 this->elsebody = elsebody; | |
| 1760 } | |
| 1761 | |
| 1762 Statement *ConditionalStatement::syntaxCopy() | |
| 1763 { | |
| 1764 Statement *e = NULL; | |
| 1765 if (elsebody) | |
| 1766 e = elsebody->syntaxCopy(); | |
| 1767 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 1768 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 1769 return s; | |
| 1770 } | |
| 1771 | |
| 1772 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 1773 { | |
| 1774 //printf("ConditionalStatement::semantic()\n"); | |
| 1775 | |
| 1776 // If we can short-circuit evaluate the if statement, don't do the | |
| 1777 // semantic analysis of the skipped code. | |
| 1778 // This feature allows a limited form of conditional compilation. | |
| 1779 if (condition->include(sc, NULL)) | |
| 1780 { | |
| 1781 ifbody = ifbody->semantic(sc); | |
| 1782 return ifbody; | |
| 1783 } | |
| 1784 else | |
| 1785 { | |
| 1786 if (elsebody) | |
| 1787 elsebody = elsebody->semantic(sc); | |
| 1788 return elsebody; | |
| 1789 } | |
| 1790 } | |
| 1791 | |
| 1792 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 1793 { | |
| 1794 Statement *s; | |
| 1795 | |
| 1796 if (condition->include(sc, NULL)) | |
| 1797 s = ifbody; | |
| 1798 else | |
| 1799 s = elsebody; | |
| 1800 | |
| 1801 Statements *a = new Statements(); | |
| 1802 a->push(s); | |
| 1803 return a; | |
| 1804 } | |
| 1805 | |
| 1806 int ConditionalStatement::usesEH() | |
| 1807 { | |
| 1808 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 1809 } | |
| 1810 | |
| 1811 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1812 { | |
| 1813 condition->toCBuffer(buf, hgs); | |
| 1814 buf->writenl(); | |
| 1815 if (ifbody) | |
| 1816 ifbody->toCBuffer(buf, hgs); | |
| 1817 if (elsebody) | |
| 1818 { | |
| 1819 buf->writestring("else"); | |
| 1820 buf->writenl(); | |
| 1821 elsebody->toCBuffer(buf, hgs); | |
| 1822 } | |
| 1823 buf->writenl(); | |
| 1824 } | |
| 1825 | |
| 1826 | |
| 1827 /******************************** PragmaStatement ***************************/ | |
| 1828 | |
| 1829 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 1830 : Statement(loc) | |
| 1831 { | |
| 1832 this->ident = ident; | |
| 1833 this->args = args; | |
| 1834 this->body = body; | |
| 1835 } | |
| 1836 | |
| 1837 Statement *PragmaStatement::syntaxCopy() | |
| 1838 { | |
| 1839 Statement *b = NULL; | |
| 1840 if (body) | |
| 1841 b = body->syntaxCopy(); | |
| 1842 PragmaStatement *s = new PragmaStatement(loc, | |
| 1843 ident, Expression::arraySyntaxCopy(args), b); | |
| 1844 return s; | |
| 1845 } | |
| 1846 | |
| 1847 Statement *PragmaStatement::semantic(Scope *sc) | |
| 1848 { // Should be merged with PragmaDeclaration | |
| 1849 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 1850 //printf("body = %p\n", body); | |
| 1851 if (ident == Id::msg) | |
| 1852 { | |
| 1853 if (args) | |
| 1854 { | |
| 1855 for (size_t i = 0; i < args->dim; i++) | |
| 1856 { | |
| 1857 Expression *e = (Expression *)args->data[i]; | |
| 1858 | |
| 1859 e = e->semantic(sc); | |
| 1860 e = e->optimize(WANTvalue | WANTinterpret); | |
| 1861 if (e->op == TOKstring) | |
| 1862 { | |
| 1863 StringExp *se = (StringExp *)e; | |
| 1864 fprintf(stdmsg, "%.*s", (int)se->len, se->string); | |
| 1865 } | |
| 1866 else | |
| 1867 error("string expected for message, not '%s'", e->toChars()); | |
| 1868 } | |
| 1869 fprintf(stdmsg, "\n"); | |
| 1870 } | |
| 1871 } | |
| 1872 else if (ident == Id::lib) | |
| 1873 { | |
| 1874 if (!args || args->dim != 1) | |
| 1875 error("string expected for library name"); | |
| 1876 else | |
| 1877 { | |
| 1878 Expression *e = (Expression *)args->data[0]; | |
| 1879 | |
| 1880 e = e->semantic(sc); | |
| 1881 e = e->optimize(WANTvalue | WANTinterpret); | |
| 1882 args->data[0] = (void *)e; | |
| 1883 if (e->op != TOKstring) | |
| 1884 error("string expected for library name, not '%s'", e->toChars()); | |
| 1885 else if (global.params.verbose) | |
| 1886 { | |
| 1887 StringExp *se = (StringExp *)e; | |
| 1888 char *name = (char *)mem.malloc(se->len + 1); | |
| 1889 memcpy(name, se->string, se->len); | |
| 1890 name[se->len] = 0; | |
| 1891 printf("library %s\n", name); | |
| 1892 mem.free(name); | |
| 1893 } | |
| 1894 } | |
| 1895 } | |
| 1896 else | |
| 1897 error("unrecognized pragma(%s)", ident->toChars()); | |
| 1898 | |
| 1899 if (body) | |
| 1900 { | |
| 1901 body = body->semantic(sc); | |
| 1902 } | |
| 1903 return body; | |
| 1904 } | |
| 1905 | |
| 1906 int PragmaStatement::usesEH() | |
| 1907 { | |
| 1908 return body && body->usesEH(); | |
| 1909 } | |
| 1910 | |
| 1911 int PragmaStatement::fallOffEnd() | |
| 1912 { | |
| 1913 if (body) | |
| 1914 return body->fallOffEnd(); | |
| 1915 return TRUE; | |
| 1916 } | |
| 1917 | |
| 1918 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1919 { | |
| 1920 buf->writestring("pragma ("); | |
| 1921 buf->writestring(ident->toChars()); | |
| 1922 if (args && args->dim) | |
| 1923 { | |
| 1924 buf->writestring(", "); | |
| 1925 argsToCBuffer(buf, args, hgs); | |
| 1926 } | |
| 1927 buf->writeByte(')'); | |
| 1928 if (body) | |
| 1929 { | |
| 1930 buf->writenl(); | |
| 1931 buf->writeByte('{'); | |
| 1932 buf->writenl(); | |
| 1933 | |
| 1934 body->toCBuffer(buf, hgs); | |
| 1935 | |
| 1936 buf->writeByte('}'); | |
| 1937 buf->writenl(); | |
| 1938 } | |
| 1939 else | |
| 1940 { | |
| 1941 buf->writeByte(';'); | |
| 1942 buf->writenl(); | |
| 1943 } | |
| 1944 } | |
| 1945 | |
| 1946 | |
| 1947 /******************************** StaticAssertStatement ***************************/ | |
| 1948 | |
| 1949 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 1950 : Statement(sa->loc) | |
| 1951 { | |
| 1952 this->sa = sa; | |
| 1953 } | |
| 1954 | |
| 1955 Statement *StaticAssertStatement::syntaxCopy() | |
| 1956 { | |
| 1957 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 1958 return s; | |
| 1959 } | |
| 1960 | |
| 1961 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 1962 { | |
| 1963 sa->semantic2(sc); | |
| 1964 return NULL; | |
| 1965 } | |
| 1966 | |
| 1967 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1968 { | |
| 1969 sa->toCBuffer(buf, hgs); | |
| 1970 } | |
| 1971 | |
| 1972 | |
| 1973 /******************************** SwitchStatement ***************************/ | |
| 1974 | |
| 1975 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 1976 : Statement(loc) | |
| 1977 { | |
| 1978 condition = c; | |
| 1979 body = b; | |
| 1980 sdefault = NULL; | |
| 1981 cases = NULL; | |
| 1982 hasNoDefault = 0; | |
| 1983 // LLVMDC | |
| 309 | 1984 enclosinghandler = NULL; |
| 159 | 1985 } |
| 1986 | |
| 1987 Statement *SwitchStatement::syntaxCopy() | |
| 1988 { | |
| 1989 SwitchStatement *s = new SwitchStatement(loc, | |
| 1990 condition->syntaxCopy(), body->syntaxCopy()); | |
| 1991 return s; | |
| 1992 } | |
| 1993 | |
| 1994 Statement *SwitchStatement::semantic(Scope *sc) | |
| 1995 { | |
| 1996 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 1997 assert(!cases); // ensure semantic() is only run once | |
| 1998 | |
| 309 | 1999 enclosinghandler = sc->tfOfTry; |
| 159 | 2000 |
| 2001 condition = condition->semantic(sc); | |
| 2002 condition = resolveProperties(sc, condition); | |
| 2003 if (condition->type->isString()) | |
| 2004 { | |
| 2005 // If it's not an array, cast it to one | |
| 2006 if (condition->type->ty != Tarray) | |
| 2007 { | |
| 2008 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2009 } | |
| 2010 } | |
| 2011 else | |
| 2012 { condition = condition->integralPromotions(sc); | |
| 2013 condition->checkIntegral(); | |
| 2014 } | |
| 2015 condition = condition->optimize(WANTvalue); | |
| 2016 | |
| 2017 sc = sc->push(); | |
| 2018 sc->sbreak = this; | |
| 2019 sc->sw = this; | |
| 2020 | |
| 2021 cases = new Array(); | |
| 2022 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2023 body = body->semantic(sc); | |
| 2024 sc->noctor--; | |
| 2025 | |
| 2026 // Resolve any goto case's with exp | |
| 2027 for (int i = 0; i < gotoCases.dim; i++) | |
| 2028 { | |
| 2029 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2030 | |
| 2031 if (!gcs->exp) | |
| 2032 { | |
| 2033 gcs->error("no case statement following goto case;"); | |
| 2034 break; | |
| 2035 } | |
| 2036 | |
| 2037 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2038 { | |
| 2039 if (!scx->sw) | |
| 2040 continue; | |
| 2041 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2042 { | |
| 2043 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2044 | |
| 2045 if (cs->exp->equals(gcs->exp)) | |
| 2046 { | |
| 2047 gcs->cs = cs; | |
| 2048 goto Lfoundcase; | |
| 2049 } | |
| 2050 } | |
| 2051 } | |
| 2052 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2053 | |
| 2054 Lfoundcase: | |
| 2055 ; | |
| 2056 } | |
| 2057 | |
| 2058 if (!sc->sw->sdefault) | |
| 2059 { hasNoDefault = 1; | |
| 2060 | |
| 2061 if (global.params.warnings) | |
|
215
a58d8f4b84df
[svn r231] Changed: warnings are no longer treated as an error.
lindquist
parents:
159
diff
changeset
|
2062 { warning("%s: switch statement has no default", loc.toChars()); |
| 159 | 2063 } |
| 2064 | |
| 2065 // Generate runtime error if the default is hit | |
| 2066 Statements *a = new Statements(); | |
| 2067 CompoundStatement *cs; | |
| 2068 Statement *s; | |
| 2069 | |
| 2070 if (global.params.useSwitchError) | |
| 2071 s = new SwitchErrorStatement(loc); | |
| 2072 else | |
| 2073 { Expression *e = new HaltExp(loc); | |
| 2074 s = new ExpStatement(loc, e); | |
| 2075 } | |
| 2076 | |
| 2077 a->reserve(4); | |
| 2078 a->push(body); | |
| 2079 a->push(new BreakStatement(loc, NULL)); | |
| 2080 sc->sw->sdefault = new DefaultStatement(loc, s); | |
| 2081 a->push(sc->sw->sdefault); | |
| 2082 cs = new CompoundStatement(loc, a); | |
| 2083 body = cs; | |
| 2084 } | |
| 2085 | |
| 2086 sc->pop(); | |
| 2087 return this; | |
| 2088 } | |
| 2089 | |
| 2090 int SwitchStatement::hasBreak() | |
| 2091 { | |
| 2092 return TRUE; | |
| 2093 } | |
| 2094 | |
| 2095 int SwitchStatement::usesEH() | |
| 2096 { | |
| 2097 return body ? body->usesEH() : 0; | |
| 2098 } | |
| 2099 | |
| 2100 int SwitchStatement::fallOffEnd() | |
| 2101 { | |
| 2102 if (body) | |
| 2103 body->fallOffEnd(); | |
| 2104 return TRUE; // need to do this better | |
| 2105 } | |
| 2106 | |
| 2107 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2108 { | |
| 2109 buf->writestring("switch ("); | |
| 2110 condition->toCBuffer(buf, hgs); | |
| 2111 buf->writebyte(')'); | |
| 2112 buf->writenl(); | |
| 2113 if (body) | |
| 2114 { | |
| 2115 if (!body->isScopeStatement()) | |
| 2116 { buf->writebyte('{'); | |
| 2117 buf->writenl(); | |
| 2118 body->toCBuffer(buf, hgs); | |
| 2119 buf->writebyte('}'); | |
| 2120 buf->writenl(); | |
| 2121 } | |
| 2122 else | |
| 2123 { | |
| 2124 body->toCBuffer(buf, hgs); | |
| 2125 } | |
| 2126 } | |
| 2127 } | |
| 2128 | |
| 2129 /******************************** CaseStatement ***************************/ | |
| 2130 | |
| 2131 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2132 : Statement(loc) | |
| 2133 { | |
| 2134 this->exp = exp; | |
| 2135 this->statement = s; | |
| 2136 cblock = NULL; | |
| 2137 bodyBB = NULL; | |
|
262
88252a1af660
[svn r280] Fixed a bunch of issues with switch statements. Ended up a bit far reaching...
lindquist
parents:
232
diff
changeset
|
2138 llvmIdx = NULL; |
| 159 | 2139 } |
| 2140 | |
| 2141 Statement *CaseStatement::syntaxCopy() | |
| 2142 { | |
| 2143 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2144 return s; | |
| 2145 } | |
| 2146 | |
| 2147 Statement *CaseStatement::semantic(Scope *sc) | |
| 2148 { SwitchStatement *sw = sc->sw; | |
| 2149 | |
| 2150 //printf("CaseStatement::semantic() %s\n", toChars()); | |
| 2151 exp = exp->semantic(sc); | |
| 2152 if (sw) | |
| 2153 { int i; | |
| 2154 | |
| 2155 exp = exp->implicitCastTo(sc, sw->condition->type); | |
| 2156 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2157 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2158 { | |
| 2159 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2160 exp = new IntegerExp(0); | |
| 2161 } | |
| 2162 | |
| 2163 for (i = 0; i < sw->cases->dim; i++) | |
| 2164 { | |
| 2165 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2166 | |
| 2167 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2168 if (cs->exp->equals(exp)) | |
| 2169 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2170 break; | |
| 2171 } | |
| 2172 } | |
| 2173 | |
| 2174 sw->cases->push(this); | |
| 2175 | |
| 2176 // Resolve any goto case's with no exp to this case statement | |
| 2177 for (i = 0; i < sw->gotoCases.dim; i++) | |
| 2178 { | |
| 2179 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2180 | |
| 2181 if (!gcs->exp) | |
| 2182 { | |
| 2183 gcs->cs = this; | |
| 2184 sw->gotoCases.remove(i); // remove from array | |
| 2185 } | |
| 2186 } | |
| 2187 } | |
| 2188 else | |
| 2189 error("case not in switch statement"); | |
| 2190 statement = statement->semantic(sc); | |
| 2191 return this; | |
| 2192 } | |
| 2193 | |
| 2194 int CaseStatement::compare(Object *obj) | |
| 2195 { | |
| 2196 // Sort cases so we can do an efficient lookup | |
| 2197 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2198 | |
| 2199 return exp->compare(cs2->exp); | |
| 2200 } | |
| 2201 | |
| 2202 int CaseStatement::usesEH() | |
| 2203 { | |
| 2204 return statement->usesEH(); | |
| 2205 } | |
| 2206 | |
| 2207 int CaseStatement::fallOffEnd() | |
| 2208 { | |
| 2209 return statement->fallOffEnd(); | |
| 2210 } | |
| 2211 | |
| 2212 int CaseStatement::comeFrom() | |
| 2213 { | |
| 2214 return TRUE; | |
| 2215 } | |
| 2216 | |
| 2217 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2218 { | |
| 2219 buf->writestring("case "); | |
| 2220 exp->toCBuffer(buf, hgs); | |
| 2221 buf->writebyte(':'); | |
| 2222 buf->writenl(); | |
| 2223 statement->toCBuffer(buf, hgs); | |
| 2224 } | |
| 2225 | |
| 2226 /******************************** DefaultStatement ***************************/ | |
| 2227 | |
| 2228 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 2229 : Statement(loc) | |
| 2230 { | |
| 2231 this->statement = s; | |
| 2232 #if IN_GCC | |
| 2233 + cblock = NULL; | |
| 2234 #endif | |
| 2235 bodyBB = NULL; | |
| 2236 } | |
| 2237 | |
| 2238 Statement *DefaultStatement::syntaxCopy() | |
| 2239 { | |
| 2240 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 2241 return s; | |
| 2242 } | |
| 2243 | |
| 2244 Statement *DefaultStatement::semantic(Scope *sc) | |
| 2245 { | |
| 2246 if (sc->sw) | |
| 2247 { | |
| 2248 if (sc->sw->sdefault) | |
| 2249 { | |
| 2250 error("switch statement already has a default"); | |
| 2251 } | |
| 2252 sc->sw->sdefault = this; | |
| 2253 } | |
| 2254 else | |
| 2255 error("default not in switch statement"); | |
| 2256 statement = statement->semantic(sc); | |
| 2257 return this; | |
| 2258 } | |
| 2259 | |
| 2260 int DefaultStatement::usesEH() | |
| 2261 { | |
| 2262 return statement->usesEH(); | |
| 2263 } | |
| 2264 | |
| 2265 int DefaultStatement::fallOffEnd() | |
| 2266 { | |
| 2267 return statement->fallOffEnd(); | |
| 2268 } | |
| 2269 | |
| 2270 int DefaultStatement::comeFrom() | |
| 2271 { | |
| 2272 return TRUE; | |
| 2273 } | |
| 2274 | |
| 2275 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2276 { | |
| 2277 buf->writestring("default:\n"); | |
| 2278 statement->toCBuffer(buf, hgs); | |
| 2279 } | |
| 2280 | |
| 2281 /******************************** GotoDefaultStatement ***************************/ | |
| 2282 | |
| 2283 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 2284 : Statement(loc) | |
| 2285 { | |
| 2286 sw = NULL; | |
| 309 | 2287 enclosinghandler = NULL; |
| 159 | 2288 } |
| 2289 | |
| 2290 Statement *GotoDefaultStatement::syntaxCopy() | |
| 2291 { | |
| 2292 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 2293 return s; | |
| 2294 } | |
| 2295 | |
| 2296 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 2297 { | |
| 309 | 2298 enclosinghandler = sc->tfOfTry; |
| 159 | 2299 sw = sc->sw; |
| 2300 if (!sw) | |
| 2301 error("goto default not in switch statement"); | |
| 2302 return this; | |
| 2303 } | |
| 2304 | |
| 2305 int GotoDefaultStatement::fallOffEnd() | |
| 2306 { | |
| 2307 return FALSE; | |
| 2308 } | |
| 2309 | |
| 2310 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2311 { | |
| 2312 buf->writestring("goto default;\n"); | |
| 2313 } | |
| 2314 | |
| 2315 /******************************** GotoCaseStatement ***************************/ | |
| 2316 | |
| 2317 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 2318 : Statement(loc) | |
| 2319 { | |
| 2320 cs = NULL; | |
| 2321 this->exp = exp; | |
| 309 | 2322 enclosinghandler = NULL; |
| 159 | 2323 sw = NULL; |
| 2324 } | |
| 2325 | |
| 2326 Statement *GotoCaseStatement::syntaxCopy() | |
| 2327 { | |
| 2328 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 2329 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 2330 return s; | |
| 2331 } | |
| 2332 | |
| 2333 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 2334 { | |
| 309 | 2335 enclosinghandler = sc->tfOfTry; |
| 159 | 2336 if (exp) |
| 2337 exp = exp->semantic(sc); | |
| 2338 | |
| 2339 if (!sc->sw) | |
| 2340 error("goto case not in switch statement"); | |
| 2341 else | |
| 2342 { | |
| 2343 sw = sc->sw; | |
| 2344 sc->sw->gotoCases.push(this); | |
| 2345 if (exp) | |
| 2346 { | |
| 2347 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 2348 exp = exp->optimize(WANTvalue); | |
| 2349 } | |
| 2350 } | |
| 2351 return this; | |
| 2352 } | |
| 2353 | |
| 2354 int GotoCaseStatement::fallOffEnd() | |
| 2355 { | |
| 2356 return FALSE; | |
| 2357 } | |
| 2358 | |
| 2359 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2360 { | |
| 2361 buf->writestring("goto case"); | |
| 2362 if (exp) | |
| 2363 { buf->writebyte(' '); | |
| 2364 exp->toCBuffer(buf, hgs); | |
| 2365 } | |
| 2366 buf->writebyte(';'); | |
| 2367 buf->writenl(); | |
| 2368 } | |
| 2369 | |
| 2370 /******************************** SwitchErrorStatement ***************************/ | |
| 2371 | |
| 2372 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 2373 : Statement(loc) | |
| 2374 { | |
| 2375 } | |
| 2376 | |
| 2377 int SwitchErrorStatement::fallOffEnd() | |
| 2378 { | |
| 2379 return FALSE; | |
| 2380 } | |
| 2381 | |
| 2382 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2383 { | |
| 2384 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 2385 buf->writenl(); | |
| 2386 } | |
| 2387 | |
| 2388 /******************************** ReturnStatement ***************************/ | |
| 2389 | |
| 2390 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 2391 : Statement(loc) | |
| 2392 { | |
| 2393 this->exp = exp; | |
| 309 | 2394 this->enclosinghandler = NULL; |
| 159 | 2395 } |
| 2396 | |
| 2397 Statement *ReturnStatement::syntaxCopy() | |
| 2398 { | |
| 2399 Expression *e = NULL; | |
| 2400 if (exp) | |
| 2401 e = exp->syntaxCopy(); | |
| 2402 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 2403 return s; | |
| 2404 } | |
| 2405 | |
| 2406 Statement *ReturnStatement::semantic(Scope *sc) | |
| 2407 { | |
| 2408 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 309 | 2409 this->enclosinghandler = sc->tfOfTry; |
| 159 | 2410 |
| 2411 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 2412 Scope *scx = sc; | |
| 2413 int implicit0 = 0; | |
| 2414 | |
| 2415 if (sc->fes) | |
| 2416 { | |
| 2417 // Find scope of function foreach is in | |
| 2418 for (; 1; scx = scx->enclosing) | |
| 2419 { | |
| 2420 assert(scx); | |
| 2421 if (scx->func != fd) | |
| 2422 { fd = scx->func; // fd is now function enclosing foreach | |
| 2423 break; | |
| 2424 } | |
| 2425 } | |
| 2426 } | |
| 2427 | |
| 2428 Type *tret = fd->type->nextOf(); | |
| 2429 if (fd->tintro) | |
| 2430 tret = fd->tintro->nextOf(); | |
| 2431 Type *tbret = NULL; | |
| 2432 | |
| 2433 if (tret) | |
| 2434 tbret = tret->toBasetype(); | |
| 2435 | |
| 2436 // main() returns 0, even if it returns void | |
| 2437 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 2438 { implicit0 = 1; | |
| 2439 exp = new IntegerExp(0); | |
| 2440 } | |
| 2441 | |
| 2442 if (sc->incontract || scx->incontract) | |
| 2443 error("return statements cannot be in contracts"); | |
| 2444 if (sc->tf || scx->tf) | |
| 2445 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); | |
| 2446 | |
| 2447 if (fd->isCtorDeclaration()) | |
| 2448 { | |
| 2449 // Constructors implicitly do: | |
| 2450 // return this; | |
| 2451 if (exp && exp->op != TOKthis) | |
| 2452 error("cannot return expression from constructor"); | |
| 2453 exp = new ThisExp(0); | |
| 2454 } | |
| 2455 | |
| 2456 if (!exp) | |
| 2457 fd->nrvo_can = 0; | |
| 2458 | |
| 2459 if (exp) | |
| 2460 { | |
| 2461 fd->hasReturnExp |= 1; | |
| 2462 | |
| 2463 exp = exp->semantic(sc); | |
| 2464 exp = resolveProperties(sc, exp); | |
| 2465 exp = exp->optimize(WANTvalue); | |
| 2466 | |
| 2467 if (fd->nrvo_can && exp->op == TOKvar) | |
| 2468 { VarExp *ve = (VarExp *)exp; | |
| 2469 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 2470 | |
| 2471 if (!v || v->isOut() || v->isRef()) | |
| 2472 fd->nrvo_can = 0; | |
| 2473 else if (fd->nrvo_var == NULL) | |
| 2474 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 2475 fd->nrvo_var = v; | |
| 2476 else | |
| 2477 fd->nrvo_can = 0; | |
| 2478 } | |
| 2479 else if (fd->nrvo_var != v) | |
| 2480 fd->nrvo_can = 0; | |
| 2481 } | |
| 2482 else | |
| 2483 fd->nrvo_can = 0; | |
| 2484 | |
| 2485 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2486 { | |
| 2487 } | |
| 2488 else if (fd->inferRetType) | |
| 2489 { | |
| 2490 if (fd->type->nextOf()) | |
| 2491 { | |
| 2492 if (!exp->type->equals(fd->type->nextOf())) | |
| 2493 error("mismatched function return type inference of %s and %s", | |
| 2494 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 2495 } | |
| 2496 else | |
| 2497 { | |
| 2498 fd->type->next = exp->type; | |
| 2499 fd->type = fd->type->semantic(loc, sc); | |
| 2500 if (!fd->tintro) | |
| 2501 { tret = fd->type->nextOf(); | |
| 2502 tbret = tret->toBasetype(); | |
| 2503 } | |
| 2504 } | |
| 2505 } | |
| 2506 else if (tbret->ty != Tvoid) | |
| 2507 { | |
| 2508 exp = exp->implicitCastTo(sc, tret); | |
| 2509 } | |
| 2510 } | |
| 2511 else if (fd->inferRetType) | |
| 2512 { | |
| 2513 if (fd->type->nextOf()) | |
| 2514 { | |
| 2515 if (fd->type->nextOf()->ty != Tvoid) | |
| 2516 error("mismatched function return type inference of void and %s", | |
| 2517 fd->type->nextOf()->toChars()); | |
| 2518 } | |
| 2519 else | |
| 2520 { | |
| 2521 fd->type->next = Type::tvoid; | |
| 2522 fd->type = fd->type->semantic(loc, sc); | |
| 2523 if (!fd->tintro) | |
| 2524 { tret = Type::tvoid; | |
| 2525 tbret = tret; | |
| 2526 } | |
| 2527 } | |
| 2528 } | |
| 2529 else if (tbret->ty != Tvoid) // if non-void return | |
| 2530 error("return expression expected"); | |
| 2531 | |
| 2532 if (sc->fes) | |
| 2533 { | |
| 2534 Statement *s; | |
| 2535 | |
| 2536 if (exp && !implicit0) | |
| 2537 { | |
| 2538 exp = exp->implicitCastTo(sc, tret); | |
| 2539 } | |
| 2540 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 2541 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 2542 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 2543 exp->op == TOKstring) | |
| 2544 { | |
| 2545 sc->fes->cases.push(this); | |
| 2546 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2547 } | |
| 2548 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 2549 { | |
| 2550 Statement *s1; | |
| 2551 Statement *s2; | |
| 2552 | |
| 2553 s = new ReturnStatement(0, NULL); | |
| 2554 sc->fes->cases.push(s); | |
| 2555 | |
| 2556 // Construct: { exp; return cases.dim + 1; } | |
| 2557 s1 = new ExpStatement(loc, exp); | |
| 2558 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2559 s = new CompoundStatement(loc, s1, s2); | |
| 2560 } | |
| 2561 else | |
| 2562 { | |
| 2563 VarExp *v; | |
| 2564 Statement *s1; | |
| 2565 Statement *s2; | |
| 2566 | |
| 2567 // Construct: return vresult; | |
| 2568 if (!fd->vresult) | |
| 2569 { VarDeclaration *v; | |
| 2570 | |
| 2571 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 2572 v->noauto = 1; | |
| 2573 v->semantic(scx); | |
| 2574 if (!scx->insert(v)) | |
| 2575 assert(0); | |
| 2576 v->parent = fd; | |
| 2577 fd->vresult = v; | |
| 2578 } | |
| 2579 | |
| 2580 v = new VarExp(0, fd->vresult); | |
| 2581 s = new ReturnStatement(0, v); | |
| 2582 sc->fes->cases.push(s); | |
| 2583 | |
| 2584 // Construct: { vresult = exp; return cases.dim + 1; } | |
| 2585 v = new VarExp(0, fd->vresult); | |
| 2586 exp = new AssignExp(loc, v, exp); | |
| 2587 exp = exp->semantic(sc); | |
| 2588 s1 = new ExpStatement(loc, exp); | |
| 2589 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2590 s = new CompoundStatement(loc, s1, s2); | |
| 2591 } | |
| 2592 return s; | |
| 2593 } | |
| 2594 | |
| 2595 if (exp) | |
| 2596 { | |
| 2597 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2598 { | |
| 2599 assert(fd->vresult); | |
| 2600 VarExp *v = new VarExp(0, fd->vresult); | |
| 2601 | |
| 2602 exp = new AssignExp(loc, v, exp); | |
| 2603 exp = exp->semantic(sc); | |
| 2604 } | |
| 2605 //exp->dump(0); | |
| 2606 //exp->print(); | |
| 2607 exp->checkEscape(); | |
| 2608 } | |
| 2609 | |
| 2610 /* BUG: need to issue an error on: | |
| 2611 * this | |
| 2612 * { if (x) return; | |
| 2613 * super(); | |
| 2614 * } | |
| 2615 */ | |
| 2616 | |
| 2617 if (sc->callSuper & CSXany_ctor && | |
| 2618 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 2619 error("return without calling constructor"); | |
| 2620 | |
| 2621 sc->callSuper |= CSXreturn; | |
| 2622 | |
| 2623 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 2624 if (fd->returnLabel) | |
| 2625 { | |
| 2626 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 2627 | |
| 2628 gs->label = fd->returnLabel; | |
| 2629 if (exp) | |
| 2630 { Statement *s; | |
| 2631 | |
| 2632 s = new ExpStatement(0, exp); | |
| 2633 return new CompoundStatement(loc, s, gs); | |
| 2634 } | |
| 2635 return gs; | |
| 2636 } | |
| 2637 | |
| 2638 if (exp && tbret->ty == Tvoid && !fd->isMain()) | |
| 2639 { Statement *s; | |
| 2640 | |
| 2641 s = new ExpStatement(loc, exp); | |
| 2642 loc = 0; | |
| 2643 exp = NULL; | |
| 2644 return new CompoundStatement(loc, s, this); | |
| 2645 } | |
| 2646 | |
| 2647 return this; | |
| 2648 } | |
| 2649 | |
| 2650 int ReturnStatement::fallOffEnd() | |
| 2651 { | |
| 2652 return FALSE; | |
| 2653 } | |
| 2654 | |
| 2655 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2656 { | |
| 2657 buf->printf("return "); | |
| 2658 if (exp) | |
| 2659 exp->toCBuffer(buf, hgs); | |
| 2660 buf->writeByte(';'); | |
| 2661 buf->writenl(); | |
| 2662 } | |
| 2663 | |
| 2664 /******************************** BreakStatement ***************************/ | |
| 2665 | |
| 2666 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 2667 : Statement(loc) | |
| 2668 { | |
| 2669 this->ident = ident; | |
| 309 | 2670 this->enclosinghandler = NULL; |
| 159 | 2671 } |
| 2672 | |
| 2673 Statement *BreakStatement::syntaxCopy() | |
| 2674 { | |
| 2675 BreakStatement *s = new BreakStatement(loc, ident); | |
| 2676 return s; | |
| 2677 } | |
| 2678 | |
| 2679 Statement *BreakStatement::semantic(Scope *sc) | |
| 2680 { | |
| 309 | 2681 enclosinghandler = sc->tfOfTry; |
| 159 | 2682 // If: |
| 2683 // break Identifier; | |
| 2684 if (ident) | |
| 2685 { | |
| 2686 Scope *scx; | |
| 2687 FuncDeclaration *thisfunc = sc->func; | |
| 2688 | |
| 2689 for (scx = sc; scx; scx = scx->enclosing) | |
| 2690 { | |
| 2691 LabelStatement *ls; | |
| 2692 | |
| 2693 if (scx->func != thisfunc) // if in enclosing function | |
| 2694 { | |
| 2695 if (sc->fes) // if this is the body of a foreach | |
| 2696 { | |
| 2697 /* Post this statement to the fes, and replace | |
| 2698 * it with a return value that caller will put into | |
| 2699 * a switch. Caller will figure out where the break | |
| 2700 * label actually is. | |
| 2701 * Case numbers start with 2, not 0, as 0 is continue | |
| 2702 * and 1 is break. | |
| 2703 */ | |
| 2704 Statement *s; | |
| 2705 sc->fes->cases.push(this); | |
| 2706 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2707 return s; | |
| 2708 } | |
| 2709 break; // can't break to it | |
| 2710 } | |
| 2711 | |
| 2712 ls = scx->slabel; | |
| 2713 if (ls && ls->ident == ident) | |
| 2714 { | |
| 2715 Statement *s = ls->statement; | |
| 2716 | |
| 2717 if (!s->hasBreak()) | |
| 2718 error("label '%s' has no break", ident->toChars()); | |
| 2719 if (ls->tf != sc->tf) | |
| 2720 error("cannot break out of finally block"); | |
| 2721 | |
| 2722 this->target = ls; | |
| 2723 return this; | |
| 2724 } | |
| 2725 } | |
| 2726 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 2727 } | |
| 2728 else if (!sc->sbreak) | |
| 2729 { | |
| 2730 if (sc->fes) | |
| 2731 { Statement *s; | |
| 2732 | |
| 2733 // Replace break; with return 1; | |
| 2734 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 2735 return s; | |
| 2736 } | |
| 2737 error("break is not inside a loop or switch"); | |
| 2738 } | |
| 2739 return this; | |
| 2740 } | |
| 2741 | |
| 2742 int BreakStatement::fallOffEnd() | |
| 2743 { | |
| 2744 return FALSE; | |
| 2745 } | |
| 2746 | |
| 2747 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2748 { | |
| 2749 buf->writestring("break"); | |
| 2750 if (ident) | |
| 2751 { buf->writebyte(' '); | |
| 2752 buf->writestring(ident->toChars()); | |
| 2753 } | |
| 2754 buf->writebyte(';'); | |
| 2755 buf->writenl(); | |
| 2756 } | |
| 2757 | |
| 2758 /******************************** ContinueStatement ***************************/ | |
| 2759 | |
| 2760 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 2761 : Statement(loc) | |
| 2762 { | |
| 2763 this->ident = ident; | |
| 309 | 2764 this->enclosinghandler = NULL; |
| 159 | 2765 } |
| 2766 | |
| 2767 Statement *ContinueStatement::syntaxCopy() | |
| 2768 { | |
| 2769 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 2770 return s; | |
| 2771 } | |
| 2772 | |
| 2773 Statement *ContinueStatement::semantic(Scope *sc) | |
| 2774 { | |
| 309 | 2775 enclosinghandler = sc->tfOfTry; |
| 159 | 2776 //printf("ContinueStatement::semantic() %p\n", this); |
| 2777 if (ident) | |
| 2778 { | |
| 2779 Scope *scx; | |
| 2780 FuncDeclaration *thisfunc = sc->func; | |
| 2781 | |
| 2782 for (scx = sc; scx; scx = scx->enclosing) | |
| 2783 { | |
| 2784 LabelStatement *ls; | |
| 2785 | |
| 2786 if (scx->func != thisfunc) // if in enclosing function | |
| 2787 { | |
| 2788 if (sc->fes) // if this is the body of a foreach | |
| 2789 { | |
| 2790 for (; scx; scx = scx->enclosing) | |
| 2791 { | |
| 2792 ls = scx->slabel; | |
| 2793 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 2794 { | |
| 2795 // Replace continue ident; with return 0; | |
| 2796 return new ReturnStatement(0, new IntegerExp(0)); | |
| 2797 } | |
| 2798 } | |
| 2799 | |
| 2800 /* Post this statement to the fes, and replace | |
| 2801 * it with a return value that caller will put into | |
| 2802 * a switch. Caller will figure out where the break | |
| 2803 * label actually is. | |
| 2804 * Case numbers start with 2, not 0, as 0 is continue | |
| 2805 * and 1 is break. | |
| 2806 */ | |
| 2807 Statement *s; | |
| 2808 sc->fes->cases.push(this); | |
| 2809 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2810 return s; | |
| 2811 } | |
| 2812 break; // can't continue to it | |
| 2813 } | |
| 2814 | |
| 2815 ls = scx->slabel; | |
| 2816 if (ls && ls->ident == ident) | |
| 2817 { | |
| 2818 Statement *s = ls->statement; | |
| 2819 | |
| 2820 if (!s->hasContinue()) | |
| 2821 error("label '%s' has no continue", ident->toChars()); | |
| 2822 if (ls->tf != sc->tf) | |
| 2823 error("cannot continue out of finally block"); | |
| 2824 | |
| 2825 this->target = ls; | |
| 2826 return this; | |
| 2827 } | |
| 2828 } | |
| 2829 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 2830 } | |
| 2831 else if (!sc->scontinue) | |
| 2832 { | |
| 2833 if (sc->fes) | |
| 2834 { Statement *s; | |
| 2835 | |
| 2836 // Replace continue; with return 0; | |
| 2837 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 2838 return s; | |
| 2839 } | |
| 2840 error("continue is not inside a loop"); | |
| 2841 } | |
| 2842 return this; | |
| 2843 } | |
| 2844 | |
| 2845 int ContinueStatement::fallOffEnd() | |
| 2846 { | |
| 2847 return FALSE; | |
| 2848 } | |
| 2849 | |
| 2850 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2851 { | |
| 2852 buf->writestring("continue"); | |
| 2853 if (ident) | |
| 2854 { buf->writebyte(' '); | |
| 2855 buf->writestring(ident->toChars()); | |
| 2856 } | |
| 2857 buf->writebyte(';'); | |
| 2858 buf->writenl(); | |
| 2859 } | |
| 2860 | |
| 2861 /******************************** SynchronizedStatement ***************************/ | |
| 2862 | |
| 2863 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 2864 : Statement(loc) | |
| 2865 { | |
| 2866 this->exp = exp; | |
| 2867 this->body = body; | |
| 2868 this->esync = NULL; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
2869 this->enclosinghandler = NULL; |
| 309 | 2870 // LLVMDC |
| 2871 this->llsync = NULL; | |
| 159 | 2872 } |
| 2873 | |
| 2874 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 2875 : Statement(loc) | |
| 2876 { | |
| 2877 this->exp = NULL; | |
| 2878 this->body = body; | |
| 2879 this->esync = esync; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
2880 this->enclosinghandler = NULL; |
| 309 | 2881 // LLVMDC |
| 2882 this->llsync = NULL; | |
| 159 | 2883 } |
| 2884 | |
| 2885 Statement *SynchronizedStatement::syntaxCopy() | |
| 2886 { | |
| 2887 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 2888 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 2889 return s; | |
| 2890 } | |
| 2891 | |
| 2892 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 2893 { | |
| 2894 if (exp) | |
| 2895 { ClassDeclaration *cd; | |
| 2896 | |
| 2897 exp = exp->semantic(sc); | |
| 2898 exp = resolveProperties(sc, exp); | |
| 2899 cd = exp->type->isClassHandle(); | |
| 2900 if (!cd) | |
| 2901 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 2902 else if (cd->isInterfaceDeclaration()) | |
| 2903 { Type *t = new TypeIdentifier(0, Id::Object); | |
| 2904 | |
| 2905 t = t->semantic(0, sc); | |
| 2906 exp = new CastExp(loc, exp, t); | |
| 2907 exp = exp->semantic(sc); | |
| 2908 } | |
| 2909 } | |
| 2910 if (body) | |
| 309 | 2911 { |
| 2912 enclosinghandler = sc->tfOfTry; | |
| 2913 sc->tfOfTry = new EnclosingSynchro(this); | |
| 2914 body = body->semantic(sc); | |
| 2915 sc->tfOfTry = enclosinghandler; | |
| 2916 } | |
| 159 | 2917 return this; |
| 2918 } | |
| 2919 | |
| 2920 int SynchronizedStatement::hasBreak() | |
| 2921 { | |
| 2922 return FALSE; //TRUE; | |
| 2923 } | |
| 2924 | |
| 2925 int SynchronizedStatement::hasContinue() | |
| 2926 { | |
| 2927 return FALSE; //TRUE; | |
| 2928 } | |
| 2929 | |
| 2930 int SynchronizedStatement::usesEH() | |
| 2931 { | |
| 2932 return TRUE; | |
| 2933 } | |
| 2934 | |
| 2935 int SynchronizedStatement::fallOffEnd() | |
| 2936 { | |
| 2937 return body ? body->fallOffEnd() : TRUE; | |
| 2938 } | |
| 2939 | |
| 2940 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2941 { | |
| 2942 buf->writestring("synchronized"); | |
| 2943 if (exp) | |
| 2944 { buf->writebyte('('); | |
| 2945 exp->toCBuffer(buf, hgs); | |
| 2946 buf->writebyte(')'); | |
| 2947 } | |
| 2948 if (body) | |
| 2949 { | |
| 2950 buf->writebyte(' '); | |
| 2951 body->toCBuffer(buf, hgs); | |
| 2952 } | |
| 2953 } | |
| 2954 | |
| 2955 /******************************** WithStatement ***************************/ | |
| 2956 | |
| 2957 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 2958 : Statement(loc) | |
| 2959 { | |
| 2960 this->exp = exp; | |
| 2961 this->body = body; | |
| 2962 wthis = NULL; | |
| 2963 } | |
| 2964 | |
| 2965 Statement *WithStatement::syntaxCopy() | |
| 2966 { | |
| 2967 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 2968 return s; | |
| 2969 } | |
| 2970 | |
| 2971 Statement *WithStatement::semantic(Scope *sc) | |
| 2972 { ScopeDsymbol *sym; | |
| 2973 Initializer *init; | |
| 2974 | |
| 2975 //printf("WithStatement::semantic()\n"); | |
| 2976 exp = exp->semantic(sc); | |
| 2977 exp = resolveProperties(sc, exp); | |
| 2978 if (exp->op == TOKimport) | |
| 2979 { ScopeExp *es = (ScopeExp *)exp; | |
| 2980 | |
| 2981 sym = es->sds; | |
| 2982 } | |
| 2983 else if (exp->op == TOKtype) | |
| 2984 { TypeExp *es = (TypeExp *)exp; | |
| 2985 | |
| 2986 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 2987 if (!sym) | |
| 2988 { error("%s has no members", es->toChars()); | |
| 2989 body = body->semantic(sc); | |
| 2990 return this; | |
| 2991 } | |
| 2992 } | |
| 2993 else | |
| 2994 { Type *t = exp->type; | |
| 2995 | |
| 2996 assert(t); | |
| 2997 t = t->toBasetype(); | |
| 2998 if (t->isClassHandle()) | |
| 2999 { | |
| 3000 init = new ExpInitializer(loc, exp); | |
| 3001 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3002 wthis->semantic(sc); | |
| 3003 | |
| 3004 sym = new WithScopeSymbol(this); | |
| 3005 sym->parent = sc->scopesym; | |
| 3006 } | |
| 3007 else if (t->ty == Tstruct) | |
| 3008 { | |
| 3009 Expression *e = exp->addressOf(sc); | |
| 3010 init = new ExpInitializer(loc, e); | |
| 3011 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3012 wthis->semantic(sc); | |
| 3013 sym = new WithScopeSymbol(this); | |
| 3014 sym->parent = sc->scopesym; | |
| 3015 } | |
| 3016 else | |
| 3017 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3018 return NULL; | |
| 3019 } | |
| 3020 } | |
| 3021 sc = sc->push(sym); | |
| 3022 | |
| 3023 if (body) | |
| 3024 body = body->semantic(sc); | |
| 3025 | |
| 3026 sc->pop(); | |
| 3027 | |
| 3028 return this; | |
| 3029 } | |
| 3030 | |
| 3031 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3032 { | |
| 3033 buf->writestring("with ("); | |
| 3034 exp->toCBuffer(buf, hgs); | |
| 3035 buf->writestring(")\n"); | |
| 3036 if (body) | |
| 3037 body->toCBuffer(buf, hgs); | |
| 3038 } | |
| 3039 | |
| 3040 int WithStatement::usesEH() | |
| 3041 { | |
| 3042 return body ? body->usesEH() : 0; | |
| 3043 } | |
| 3044 | |
| 3045 int WithStatement::fallOffEnd() | |
| 3046 { | |
| 3047 return body ? body->fallOffEnd() : TRUE; | |
| 3048 } | |
| 3049 | |
| 3050 /******************************** TryCatchStatement ***************************/ | |
| 3051 | |
| 3052 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3053 : Statement(loc) | |
| 3054 { | |
| 3055 this->body = body; | |
| 3056 this->catches = catches; | |
| 3057 } | |
| 3058 | |
| 3059 Statement *TryCatchStatement::syntaxCopy() | |
| 3060 { | |
| 3061 Array *a = new Array(); | |
| 3062 a->setDim(catches->dim); | |
| 3063 for (int i = 0; i < a->dim; i++) | |
| 3064 { Catch *c; | |
| 3065 | |
| 3066 c = (Catch *)catches->data[i]; | |
| 3067 c = c->syntaxCopy(); | |
| 3068 a->data[i] = c; | |
| 3069 } | |
| 3070 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3071 return s; | |
| 3072 } | |
| 3073 | |
| 3074 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3075 { | |
| 3076 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3077 | |
| 3078 for (int i = 0; i < catches->dim; i++) | |
| 3079 { Catch *c; | |
| 3080 | |
| 3081 c = (Catch *)catches->data[i]; | |
| 3082 c->semantic(sc); | |
| 3083 | |
| 3084 // Determine if current catch 'hides' any previous catches | |
| 3085 for (int j = 0; j < i; j++) | |
| 3086 { Catch *cj = (Catch *)catches->data[j]; | |
| 3087 char *si = c->loc.toChars(); | |
| 3088 char *sj = cj->loc.toChars(); | |
| 3089 | |
| 3090 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3091 error("catch at %s hides catch at %s", sj, si); | |
| 3092 } | |
| 3093 } | |
| 3094 return this; | |
| 3095 } | |
| 3096 | |
| 3097 int TryCatchStatement::hasBreak() | |
| 3098 { | |
| 3099 return FALSE; //TRUE; | |
| 3100 } | |
| 3101 | |
| 3102 int TryCatchStatement::usesEH() | |
| 3103 { | |
| 3104 return TRUE; | |
| 3105 } | |
| 3106 | |
| 3107 int TryCatchStatement::fallOffEnd() | |
| 3108 { | |
| 3109 int result = FALSE; | |
| 3110 | |
| 3111 if (body) | |
| 3112 result = body->fallOffEnd(); | |
| 3113 for (int i = 0; i < catches->dim; i++) | |
| 3114 { Catch *c; | |
| 3115 | |
| 3116 c = (Catch *)catches->data[i]; | |
| 3117 if (c->handler) | |
| 3118 result |= c->handler->fallOffEnd(); | |
| 3119 } | |
| 3120 return result; | |
| 3121 } | |
| 3122 | |
| 3123 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3124 { | |
| 3125 buf->writestring("try"); | |
| 3126 buf->writenl(); | |
| 3127 if (body) | |
| 3128 body->toCBuffer(buf, hgs); | |
| 3129 int i; | |
| 3130 for (i = 0; i < catches->dim; i++) | |
| 3131 { | |
| 3132 Catch *c = (Catch *)catches->data[i]; | |
| 3133 c->toCBuffer(buf, hgs); | |
| 3134 } | |
| 3135 } | |
| 3136 | |
| 3137 /******************************** Catch ***************************/ | |
| 3138 | |
| 3139 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 3140 { | |
| 3141 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 3142 this->loc = loc; | |
| 3143 this->type = t; | |
| 3144 this->ident = id; | |
| 3145 this->handler = handler; | |
| 3146 var = NULL; | |
| 3147 } | |
| 3148 | |
| 3149 Catch *Catch::syntaxCopy() | |
| 3150 { | |
| 3151 Catch *c = new Catch(loc, | |
| 3152 (type ? type->syntaxCopy() : NULL), | |
| 3153 ident, | |
| 3154 (handler ? handler->syntaxCopy() : NULL)); | |
| 3155 return c; | |
| 3156 } | |
| 3157 | |
| 3158 void Catch::semantic(Scope *sc) | |
| 3159 { ScopeDsymbol *sym; | |
| 3160 | |
| 3161 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 3162 | |
| 3163 #ifndef IN_GCC | |
| 3164 if (sc->tf) | |
| 3165 { | |
| 3166 /* This is because the _d_local_unwind() gets the stack munged | |
| 3167 * up on this. The workaround is to place any try-catches into | |
| 3168 * a separate function, and call that. | |
| 3169 * To fix, have the compiler automatically convert the finally | |
| 3170 * body into a nested function. | |
| 3171 */ | |
| 3172 error(loc, "cannot put catch statement inside finally block"); | |
| 3173 } | |
| 3174 #endif | |
| 3175 | |
| 3176 sym = new ScopeDsymbol(); | |
| 3177 sym->parent = sc->scopesym; | |
| 3178 sc = sc->push(sym); | |
| 3179 | |
| 3180 if (!type) | |
| 3181 type = new TypeIdentifier(0, Id::Object); | |
| 3182 type = type->semantic(loc, sc); | |
| 3183 if (!type->toBasetype()->isClassHandle()) | |
| 3184 error("can only catch class objects, not '%s'", type->toChars()); | |
| 3185 else if (ident) | |
| 3186 { | |
| 3187 var = new VarDeclaration(loc, type, ident, NULL); | |
| 3188 var->parent = sc->parent; | |
| 3189 sc->insert(var); | |
| 3190 } | |
| 3191 handler = handler->semantic(sc); | |
| 3192 | |
| 3193 sc->pop(); | |
| 3194 } | |
| 3195 | |
| 3196 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3197 { | |
| 3198 buf->writestring("catch"); | |
| 3199 if (type) | |
| 3200 { buf->writebyte('('); | |
| 3201 type->toCBuffer(buf, ident, hgs); | |
| 3202 buf->writebyte(')'); | |
| 3203 } | |
| 3204 buf->writenl(); | |
| 3205 buf->writebyte('{'); | |
| 3206 buf->writenl(); | |
| 3207 handler->toCBuffer(buf, hgs); | |
| 3208 buf->writebyte('}'); | |
| 3209 buf->writenl(); | |
| 3210 } | |
| 3211 | |
| 3212 /****************************** TryFinallyStatement ***************************/ | |
| 3213 | |
| 3214 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 3215 : Statement(loc) | |
| 3216 { | |
| 3217 this->body = body; | |
| 3218 this->finalbody = finalbody; | |
| 309 | 3219 this->enclosinghandler = NULL; |
| 159 | 3220 } |
| 3221 | |
| 3222 Statement *TryFinallyStatement::syntaxCopy() | |
| 3223 { | |
| 3224 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 3225 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 3226 return s; | |
| 3227 } | |
| 3228 | |
| 3229 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 3230 { | |
| 3231 //printf("TryFinallyStatement::semantic()\n"); | |
| 3232 | |
| 309 | 3233 enclosinghandler = sc->tfOfTry; |
| 3234 sc->tfOfTry = new EnclosingTryFinally(this); | |
| 159 | 3235 body = body->semantic(sc); |
| 309 | 3236 sc->tfOfTry = enclosinghandler; |
| 159 | 3237 |
| 3238 sc = sc->push(); | |
| 3239 sc->tf = this; | |
| 3240 sc->sbreak = NULL; | |
| 3241 sc->scontinue = NULL; // no break or continue out of finally block | |
| 3242 finalbody = finalbody->semantic(sc); | |
| 3243 sc->pop(); | |
| 3244 return this; | |
| 3245 } | |
| 3246 | |
| 3247 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3248 { | |
| 3249 buf->printf("try\n{\n"); | |
| 3250 body->toCBuffer(buf, hgs); | |
| 3251 buf->printf("}\nfinally\n{\n"); | |
| 3252 finalbody->toCBuffer(buf, hgs); | |
| 3253 buf->writeByte('}'); | |
| 3254 buf->writenl(); | |
| 3255 } | |
| 3256 | |
| 3257 int TryFinallyStatement::hasBreak() | |
| 3258 { | |
| 3259 return FALSE; //TRUE; | |
| 3260 } | |
| 3261 | |
| 3262 int TryFinallyStatement::hasContinue() | |
| 3263 { | |
| 3264 return FALSE; //TRUE; | |
| 3265 } | |
| 3266 | |
| 3267 int TryFinallyStatement::usesEH() | |
| 3268 { | |
| 3269 return TRUE; | |
| 3270 } | |
| 3271 | |
| 3272 int TryFinallyStatement::fallOffEnd() | |
| 3273 { int result; | |
| 3274 | |
| 3275 result = body ? body->fallOffEnd() : TRUE; | |
| 3276 // if (finalbody) | |
| 3277 // result = finalbody->fallOffEnd(); | |
| 3278 return result; | |
| 3279 } | |
| 3280 | |
| 3281 /****************************** OnScopeStatement ***************************/ | |
| 3282 | |
| 3283 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 3284 : Statement(loc) | |
| 3285 { | |
| 3286 this->tok = tok; | |
| 3287 this->statement = statement; | |
| 3288 } | |
| 3289 | |
| 3290 Statement *OnScopeStatement::syntaxCopy() | |
| 3291 { | |
| 3292 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 3293 tok, statement->syntaxCopy()); | |
| 3294 return s; | |
| 3295 } | |
| 3296 | |
| 3297 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 3298 { | |
| 3299 /* semantic is called on results of scopeCode() */ | |
| 3300 return this; | |
| 3301 } | |
| 3302 | |
| 3303 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3304 { | |
| 3305 buf->writestring(Token::toChars(tok)); | |
| 3306 buf->writebyte(' '); | |
| 3307 statement->toCBuffer(buf, hgs); | |
| 3308 } | |
| 3309 | |
| 3310 int OnScopeStatement::usesEH() | |
| 3311 { | |
| 3312 return (tok != TOKon_scope_success); | |
| 3313 } | |
| 3314 | |
| 3315 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 3316 { | |
| 3317 //printf("OnScopeStatement::scopeCode()\n"); | |
| 3318 //print(); | |
| 3319 *sentry = NULL; | |
| 3320 *sexception = NULL; | |
| 3321 *sfinally = NULL; | |
| 3322 switch (tok) | |
| 3323 { | |
| 3324 case TOKon_scope_exit: | |
| 3325 *sfinally = statement; | |
| 3326 break; | |
| 3327 | |
| 3328 case TOKon_scope_failure: | |
| 3329 *sexception = statement; | |
| 3330 break; | |
| 3331 | |
| 3332 case TOKon_scope_success: | |
| 3333 { | |
| 3334 /* Create: | |
| 3335 * sentry: int x = 0; | |
| 3336 * sexception: x = 1; | |
| 3337 * sfinally: if (!x) statement; | |
| 3338 */ | |
| 3339 static int num; | |
| 3340 char name[5 + sizeof(num) * 3 + 1]; | |
| 3341 sprintf(name, "__osf%d", ++num); | |
| 3342 Identifier *id = Lexer::idPool(name); | |
| 3343 | |
| 3344 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 3345 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 3346 *sentry = new DeclarationStatement(loc, v); | |
| 3347 | |
| 3348 Expression *e = new IntegerExp(1); | |
| 3349 e = new AssignExp(0, new VarExp(0, v), e); | |
| 3350 *sexception = new ExpStatement(0, e); | |
| 3351 | |
| 3352 e = new VarExp(0, v); | |
| 3353 e = new NotExp(0, e); | |
| 3354 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 3355 | |
| 3356 break; | |
| 3357 } | |
| 3358 | |
| 3359 default: | |
| 3360 assert(0); | |
| 3361 } | |
| 3362 } | |
| 3363 | |
| 3364 /******************************** ThrowStatement ***************************/ | |
| 3365 | |
| 3366 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 3367 : Statement(loc) | |
| 3368 { | |
| 3369 this->exp = exp; | |
| 3370 } | |
| 3371 | |
| 3372 Statement *ThrowStatement::syntaxCopy() | |
| 3373 { | |
| 3374 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 3375 return s; | |
| 3376 } | |
| 3377 | |
| 3378 Statement *ThrowStatement::semantic(Scope *sc) | |
| 3379 { | |
| 3380 //printf("ThrowStatement::semantic()\n"); | |
| 3381 | |
| 3382 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3383 fd->hasReturnExp |= 2; | |
| 3384 | |
| 3385 if (sc->incontract) | |
| 3386 error("Throw statements cannot be in contracts"); | |
| 3387 exp = exp->semantic(sc); | |
| 3388 exp = resolveProperties(sc, exp); | |
| 3389 if (!exp->type->toBasetype()->isClassHandle()) | |
| 3390 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 3391 return this; | |
| 3392 } | |
| 3393 | |
| 3394 int ThrowStatement::fallOffEnd() | |
| 3395 { | |
| 3396 return FALSE; | |
| 3397 } | |
| 3398 | |
| 3399 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3400 { | |
| 3401 buf->printf("throw "); | |
| 3402 exp->toCBuffer(buf, hgs); | |
| 3403 buf->writeByte(';'); | |
| 3404 buf->writenl(); | |
| 3405 } | |
| 3406 | |
| 3407 /******************************** VolatileStatement **************************/ | |
| 3408 | |
| 3409 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 3410 : Statement(loc) | |
| 3411 { | |
| 3412 this->statement = statement; | |
| 309 | 3413 this->enclosinghandler = NULL; |
| 159 | 3414 } |
| 3415 | |
| 3416 Statement *VolatileStatement::syntaxCopy() | |
| 3417 { | |
| 3418 VolatileStatement *s = new VolatileStatement(loc, | |
| 3419 statement ? statement->syntaxCopy() : NULL); | |
| 3420 return s; | |
| 3421 } | |
| 3422 | |
| 3423 Statement *VolatileStatement::semantic(Scope *sc) | |
| 3424 { | |
| 309 | 3425 if (statement) |
| 3426 { | |
| 3427 enclosinghandler = sc->tfOfTry; | |
| 3428 sc->tfOfTry = new EnclosingVolatile(this); | |
| 3429 statement = statement->semantic(sc); | |
| 3430 sc->tfOfTry = enclosinghandler; | |
| 3431 } | |
| 159 | 3432 return this; |
| 3433 } | |
| 3434 | |
| 3435 Statements *VolatileStatement::flatten(Scope *sc) | |
| 3436 { | |
| 3437 Statements *a; | |
| 3438 | |
| 3439 a = statement ? statement->flatten(sc) : NULL; | |
| 3440 if (a) | |
| 3441 { for (int i = 0; i < a->dim; i++) | |
| 3442 { Statement *s = (Statement *)a->data[i]; | |
| 3443 | |
| 3444 s = new VolatileStatement(loc, s); | |
| 3445 a->data[i] = s; | |
| 3446 } | |
| 3447 } | |
| 3448 | |
| 3449 return a; | |
| 3450 } | |
| 3451 | |
| 3452 int VolatileStatement::fallOffEnd() | |
| 3453 { | |
| 3454 return statement ? statement->fallOffEnd() : TRUE; | |
| 3455 } | |
| 3456 | |
| 3457 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3458 { | |
| 3459 buf->writestring("volatile"); | |
| 3460 if (statement) | |
| 3461 { if (statement->isScopeStatement()) | |
| 3462 buf->writenl(); | |
| 3463 else | |
| 3464 buf->writebyte(' '); | |
| 3465 statement->toCBuffer(buf, hgs); | |
| 3466 } | |
| 3467 } | |
| 3468 | |
| 3469 | |
| 3470 /******************************** GotoStatement ***************************/ | |
| 3471 | |
| 3472 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 3473 : Statement(loc) | |
| 3474 { | |
| 3475 this->ident = ident; | |
| 3476 this->label = NULL; | |
| 3477 this->tf = NULL; | |
| 309 | 3478 this->enclosinghandler = NULL; |
| 159 | 3479 } |
| 3480 | |
| 3481 Statement *GotoStatement::syntaxCopy() | |
| 3482 { | |
| 3483 GotoStatement *s = new GotoStatement(loc, ident); | |
| 3484 return s; | |
| 3485 } | |
| 3486 | |
| 3487 Statement *GotoStatement::semantic(Scope *sc) | |
| 3488 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3489 | |
| 3490 //printf("GotoStatement::semantic()\n"); | |
| 3491 tf = sc->tf; | |
| 309 | 3492 enclosinghandler = sc->tfOfTry; |
| 159 | 3493 label = fd->searchLabel(ident); |
| 3494 if (!label->statement && sc->fes) | |
| 3495 { | |
| 3496 /* Either the goto label is forward referenced or it | |
| 3497 * is in the function that the enclosing foreach is in. | |
| 3498 * Can't know yet, so wrap the goto in a compound statement | |
| 3499 * so we can patch it later, and add it to a 'look at this later' | |
| 3500 * list. | |
| 3501 */ | |
| 3502 Statements *a = new Statements(); | |
| 3503 Statement *s; | |
| 3504 | |
| 3505 a->push(this); | |
| 3506 s = new CompoundStatement(loc, a); | |
| 3507 sc->fes->gotos.push(s); // 'look at this later' list | |
| 3508 return s; | |
| 3509 } | |
| 3510 if (label->statement && label->statement->tf != sc->tf) | |
| 3511 error("cannot goto in or out of finally block"); | |
| 3512 return this; | |
| 3513 } | |
| 3514 | |
| 3515 int GotoStatement::fallOffEnd() | |
| 3516 { | |
| 3517 return FALSE; | |
| 3518 } | |
| 3519 | |
| 3520 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3521 { | |
| 3522 buf->writestring("goto "); | |
| 3523 buf->writestring(ident->toChars()); | |
| 3524 buf->writebyte(';'); | |
| 3525 buf->writenl(); | |
| 3526 } | |
| 3527 | |
| 3528 /******************************** LabelStatement ***************************/ | |
| 3529 | |
| 3530 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 3531 : Statement(loc) | |
| 3532 { | |
| 3533 this->ident = ident; | |
| 3534 this->statement = statement; | |
| 3535 this->tf = NULL; | |
| 309 | 3536 this->enclosinghandler = NULL; |
| 159 | 3537 this->lblock = NULL; |
| 3538 this->isReturnLabel = 0; | |
| 3539 this->llvmBB = NULL; | |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3540 this->asmLabel = false; |
| 159 | 3541 } |
| 3542 | |
| 3543 Statement *LabelStatement::syntaxCopy() | |
| 3544 { | |
| 3545 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 3546 return s; | |
| 3547 } | |
| 3548 | |
| 3549 Statement *LabelStatement::semantic(Scope *sc) | |
| 3550 { LabelDsymbol *ls; | |
| 3551 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3552 | |
| 3553 //printf("LabelStatement::semantic()\n"); | |
| 3554 ls = fd->searchLabel(ident); | |
| 3555 if (ls->statement) | |
| 3556 error("Label '%s' already defined", ls->toChars()); | |
| 3557 else | |
| 3558 ls->statement = this; | |
| 3559 tf = sc->tf; | |
| 309 | 3560 enclosinghandler = sc->tfOfTry; |
| 159 | 3561 sc = sc->push(); |
| 3562 sc->scopesym = sc->enclosing->scopesym; | |
| 3563 sc->callSuper |= CSXlabel; | |
| 3564 sc->slabel = this; | |
| 3565 if (statement) | |
| 3566 statement = statement->semantic(sc); | |
| 3567 sc->pop(); | |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3568 |
|
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3569 // LLVMDC put in labmap |
|
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3570 fd->labmap[ident->toChars()] = this; |
|
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3571 |
| 159 | 3572 return this; |
| 3573 } | |
| 3574 | |
| 3575 Statements *LabelStatement::flatten(Scope *sc) | |
| 3576 { | |
| 3577 Statements *a = NULL; | |
| 3578 | |
| 3579 if (statement) | |
| 3580 { | |
| 3581 a = statement->flatten(sc); | |
| 3582 if (a) | |
| 3583 { | |
| 3584 if (!a->dim) | |
| 3585 { | |
| 3586 a->push(new ExpStatement(loc, NULL)); | |
| 3587 } | |
| 3588 Statement *s = (Statement *)a->data[0]; | |
| 3589 | |
| 3590 s = new LabelStatement(loc, ident, s); | |
| 3591 a->data[0] = s; | |
| 3592 } | |
| 3593 } | |
| 3594 | |
| 3595 return a; | |
| 3596 } | |
| 3597 | |
| 3598 | |
| 3599 int LabelStatement::usesEH() | |
| 3600 { | |
| 3601 return statement ? statement->usesEH() : FALSE; | |
| 3602 } | |
| 3603 | |
| 3604 int LabelStatement::fallOffEnd() | |
| 3605 { | |
| 3606 return statement ? statement->fallOffEnd() : TRUE; | |
| 3607 } | |
| 3608 | |
| 3609 int LabelStatement::comeFrom() | |
| 3610 { | |
| 3611 //printf("LabelStatement::comeFrom()\n"); | |
| 3612 return TRUE; | |
| 3613 } | |
| 3614 | |
| 3615 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3616 { | |
| 3617 buf->writestring(ident->toChars()); | |
| 3618 buf->writebyte(':'); | |
| 3619 buf->writenl(); | |
| 3620 if (statement) | |
| 3621 statement->toCBuffer(buf, hgs); | |
| 3622 } | |
| 3623 | |
| 3624 | |
| 3625 /******************************** LabelDsymbol ***************************/ | |
| 3626 | |
| 3627 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 3628 : Dsymbol(ident) | |
| 3629 { | |
| 3630 statement = NULL; | |
| 3631 } | |
| 3632 | |
| 3633 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 3634 { | |
| 3635 return this; | |
| 3636 } | |
| 3637 | |
| 3638 |