Mercurial > projects > ldc
annotate dmd/statement.c @ 883:b52d5de7783f
GC defines and linkage changes.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Thu, 08 Jan 2009 18:20:02 +0100 |
| parents | 330f999ade44 |
| children | d51551cb3a85 |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 336 | 3 // Copyright (c) 1999-2008 by Digital Mars |
| 159 | 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" | |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
29 #include "template.h" |
| 159 | 30 |
| 31 /******************************** Statement ***************************/ | |
| 32 | |
| 33 Statement::Statement(Loc loc) | |
| 34 : loc(loc) | |
| 35 { | |
| 36 #ifdef _DH | |
| 37 // If this is an in{} contract scope statement (skip for determining | |
| 38 // inlineStatus of a function body for header content) | |
| 39 incontract = 0; | |
| 40 #endif | |
| 41 } | |
| 42 | |
| 43 Statement *Statement::syntaxCopy() | |
| 44 { | |
| 45 assert(0); | |
| 46 return NULL; | |
| 47 } | |
| 48 | |
| 49 void Statement::print() | |
| 50 { | |
| 51 fprintf(stdmsg, "%s\n", toChars()); | |
| 52 fflush(stdmsg); | |
| 53 } | |
| 54 | |
| 55 char *Statement::toChars() | |
| 56 { OutBuffer *buf; | |
| 57 HdrGenState hgs; | |
| 58 | |
| 59 buf = new OutBuffer(); | |
| 60 toCBuffer(buf, &hgs); | |
| 61 return buf->toChars(); | |
| 62 } | |
| 63 | |
| 64 void Statement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 65 { | |
| 66 buf->printf("Statement::toCBuffer()"); | |
| 67 buf->writenl(); | |
| 68 } | |
| 69 | |
| 70 Statement *Statement::semantic(Scope *sc) | |
| 71 { | |
| 72 return this; | |
| 73 } | |
| 74 | |
| 75 // Same as semantic(), but do create a new scope | |
| 76 | |
| 77 Statement *Statement::semanticScope(Scope *sc, Statement *sbreak, Statement *scontinue) | |
| 78 { Scope *scd; | |
| 79 Statement *s; | |
| 80 | |
| 81 scd = sc->push(); | |
| 82 if (sbreak) | |
| 83 scd->sbreak = sbreak; | |
| 84 if (scontinue) | |
| 85 scd->scontinue = scontinue; | |
| 86 s = semantic(scd); | |
| 87 scd->pop(); | |
| 88 return s; | |
| 89 } | |
| 90 | |
| 91 void Statement::error(const char *format, ...) | |
| 92 { | |
| 93 va_list ap; | |
| 94 va_start(ap, format); | |
| 95 ::verror(loc, format, ap); | |
| 96 va_end( ap ); | |
| 97 } | |
| 98 | |
| 99 int Statement::hasBreak() | |
| 100 { | |
| 101 //printf("Statement::hasBreak()\n"); | |
| 102 return FALSE; | |
| 103 } | |
| 104 | |
| 105 int Statement::hasContinue() | |
| 106 { | |
| 107 return FALSE; | |
| 108 } | |
| 109 | |
| 110 // TRUE if statement uses exception handling | |
| 111 | |
| 112 int Statement::usesEH() | |
| 113 { | |
| 114 return FALSE; | |
| 115 } | |
| 116 | |
| 336 | 117 /* Only valid after semantic analysis |
| 118 */ | |
| 119 int Statement::blockExit() | |
| 120 { | |
| 121 printf("Statement::blockExit(%p)\n", this); | |
| 122 printf("%s\n", toChars()); | |
| 123 assert(0); | |
| 124 return BEany; | |
| 125 } | |
| 126 | |
| 159 | 127 // TRUE if statement 'comes from' somewhere else, like a goto |
| 128 | |
| 129 int Statement::comeFrom() | |
| 130 { | |
| 131 //printf("Statement::comeFrom()\n"); | |
| 132 return FALSE; | |
| 133 } | |
| 134 | |
| 135 /**************************************** | |
| 136 * If this statement has code that needs to run in a finally clause | |
| 137 * at the end of the current scope, return that code in the form of | |
| 138 * a Statement. | |
| 139 * Output: | |
| 140 * *sentry code executed upon entry to the scope | |
| 141 * *sexception code executed upon exit from the scope via exception | |
| 142 * *sfinally code executed in finally block | |
| 143 */ | |
| 144 | |
| 145 void Statement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 146 { | |
| 147 //printf("Statement::scopeCode()\n"); | |
| 148 //print(); | |
| 149 *sentry = NULL; | |
| 150 *sexception = NULL; | |
| 151 *sfinally = NULL; | |
| 152 } | |
| 153 | |
| 154 /********************************* | |
| 155 * Flatten out the scope by presenting the statement | |
| 156 * as an array of statements. | |
| 157 * Returns NULL if no flattening necessary. | |
| 158 */ | |
| 159 | |
| 160 Statements *Statement::flatten(Scope *sc) | |
| 161 { | |
| 162 return NULL; | |
| 163 } | |
| 164 | |
| 165 | |
| 166 /******************************** ExpStatement ***************************/ | |
| 167 | |
| 168 ExpStatement::ExpStatement(Loc loc, Expression *exp) | |
| 169 : Statement(loc) | |
| 170 { | |
| 171 this->exp = exp; | |
| 172 } | |
| 173 | |
| 174 Statement *ExpStatement::syntaxCopy() | |
| 175 { | |
| 176 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 177 ExpStatement *es = new ExpStatement(loc, e); | |
| 178 return es; | |
| 179 } | |
| 180 | |
| 181 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 182 { | |
| 183 if (exp) | |
| 184 exp->toCBuffer(buf, hgs); | |
| 185 buf->writeByte(';'); | |
| 186 if (!hgs->FLinit.init) | |
| 187 buf->writenl(); | |
| 188 } | |
| 189 | |
| 190 Statement *ExpStatement::semantic(Scope *sc) | |
| 191 { | |
| 192 if (exp) | |
| 193 { | |
| 194 //printf("ExpStatement::semantic() %s\n", exp->toChars()); | |
| 195 exp = exp->semantic(sc); | |
| 196 exp = resolveProperties(sc, exp); | |
| 197 exp->checkSideEffect(0); | |
| 198 exp = exp->optimize(0); | |
| 199 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0); | |
| 200 } | |
| 201 return this; | |
| 202 } | |
| 203 | |
| 336 | 204 int ExpStatement::blockExit() |
| 205 { int result = BEfallthru; | |
| 206 | |
| 207 if (exp) | |
| 208 { | |
| 209 if (exp->op == TOKhalt) | |
| 210 return BEhalt; | |
| 211 if (exp->op == TOKassert) | |
| 212 { AssertExp *a = (AssertExp *)exp; | |
| 213 | |
| 214 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 215 return BEhalt; | |
| 216 } | |
| 217 if (exp->canThrow()) | |
| 218 result |= BEthrow; | |
| 219 } | |
| 220 return result; | |
| 221 } | |
| 222 | |
| 159 | 223 |
| 224 /******************************** CompileStatement ***************************/ | |
| 225 | |
| 226 CompileStatement::CompileStatement(Loc loc, Expression *exp) | |
| 227 : Statement(loc) | |
| 228 { | |
| 229 this->exp = exp; | |
| 230 } | |
| 231 | |
| 232 Statement *CompileStatement::syntaxCopy() | |
| 233 { | |
| 234 Expression *e = exp->syntaxCopy(); | |
| 235 CompileStatement *es = new CompileStatement(loc, e); | |
| 236 return es; | |
| 237 } | |
| 238 | |
| 239 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 240 { | |
| 241 buf->writestring("mixin("); | |
| 242 exp->toCBuffer(buf, hgs); | |
| 243 buf->writestring(");"); | |
| 244 if (!hgs->FLinit.init) | |
| 245 buf->writenl(); | |
| 246 } | |
| 247 | |
| 336 | 248 Statements *CompileStatement::flatten(Scope *sc) |
| 159 | 249 { |
| 336 | 250 //printf("CompileStatement::flatten() %s\n", exp->toChars()); |
| 159 | 251 exp = exp->semantic(sc); |
| 252 exp = resolveProperties(sc, exp); | |
| 253 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 254 if (exp->op != TOKstring) | |
| 255 { error("argument to mixin must be a string, not (%s)", exp->toChars()); | |
| 336 | 256 return NULL; |
| 159 | 257 } |
| 258 StringExp *se = (StringExp *)exp; | |
| 259 se = se->toUTF8(sc); | |
| 260 Parser p(sc->module, (unsigned char *)se->string, se->len, 0); | |
| 261 p.loc = loc; | |
| 262 p.nextToken(); | |
| 263 | |
| 336 | 264 Statements *a = new Statements(); |
| 159 | 265 while (p.token.value != TOKeof) |
| 266 { | |
| 267 Statement *s = p.parseStatement(PSsemi | PScurlyscope); | |
| 336 | 268 a->push(s); |
| 159 | 269 } |
| 336 | 270 return a; |
| 271 } | |
| 272 | |
| 273 Statement *CompileStatement::semantic(Scope *sc) | |
| 274 { | |
| 275 //printf("CompileStatement::semantic() %s\n", exp->toChars()); | |
| 276 Statements *a = flatten(sc); | |
| 277 if (!a) | |
| 278 return NULL; | |
| 279 Statement *s = new CompoundStatement(loc, a); | |
| 159 | 280 return s->semantic(sc); |
| 281 } | |
| 282 | |
| 283 | |
| 284 /******************************** DeclarationStatement ***************************/ | |
| 285 | |
| 286 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration) | |
| 287 : ExpStatement(loc, new DeclarationExp(loc, declaration)) | |
| 288 { | |
| 289 } | |
| 290 | |
| 291 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp) | |
| 292 : ExpStatement(loc, exp) | |
| 293 { | |
| 294 } | |
| 295 | |
| 296 Statement *DeclarationStatement::syntaxCopy() | |
| 297 { | |
| 298 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy()); | |
| 299 return ds; | |
| 300 } | |
| 301 | |
| 302 void DeclarationStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 303 { | |
| 304 //printf("DeclarationStatement::scopeCode()\n"); | |
| 305 //print(); | |
| 306 | |
| 307 *sentry = NULL; | |
| 308 *sexception = NULL; | |
| 309 *sfinally = NULL; | |
| 310 | |
| 311 if (exp) | |
| 312 { | |
| 313 if (exp->op == TOKdeclaration) | |
| 314 { | |
| 315 DeclarationExp *de = (DeclarationExp *)(exp); | |
| 316 VarDeclaration *v = de->declaration->isVarDeclaration(); | |
| 317 if (v) | |
| 318 { Expression *e; | |
| 319 | |
| 320 e = v->callAutoDtor(); | |
| 321 if (e) | |
| 322 { | |
| 323 //printf("dtor is: "); e->print(); | |
| 324 *sfinally = new ExpStatement(loc, e); | |
| 325 } | |
| 326 } | |
| 327 } | |
| 328 } | |
| 329 } | |
| 330 | |
| 331 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 332 { | |
| 333 exp->toCBuffer(buf, hgs); | |
| 334 } | |
| 335 | |
| 336 | |
| 337 /******************************** CompoundStatement ***************************/ | |
| 338 | |
| 339 CompoundStatement::CompoundStatement(Loc loc, Statements *s) | |
| 340 : Statement(loc) | |
| 341 { | |
| 342 statements = s; | |
| 343 } | |
| 344 | |
| 345 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2) | |
| 346 : Statement(loc) | |
| 347 { | |
| 348 statements = new Statements(); | |
| 349 statements->reserve(2); | |
| 350 statements->push(s1); | |
| 351 statements->push(s2); | |
| 352 } | |
| 353 | |
| 354 Statement *CompoundStatement::syntaxCopy() | |
| 355 { | |
| 356 Statements *a = new Statements(); | |
| 357 a->setDim(statements->dim); | |
| 358 for (size_t i = 0; i < statements->dim; i++) | |
| 359 { Statement *s = (Statement *)statements->data[i]; | |
| 360 if (s) | |
| 361 s = s->syntaxCopy(); | |
| 362 a->data[i] = s; | |
| 363 } | |
| 364 CompoundStatement *cs = new CompoundStatement(loc, a); | |
| 365 return cs; | |
| 366 } | |
| 367 | |
| 368 | |
| 369 Statement *CompoundStatement::semantic(Scope *sc) | |
| 370 { Statement *s; | |
| 371 | |
| 372 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 373 | |
| 374 for (size_t i = 0; i < statements->dim; ) | |
| 375 { | |
| 376 s = (Statement *) statements->data[i]; | |
| 377 if (s) | |
| 378 { Statements *a = s->flatten(sc); | |
| 379 | |
| 380 if (a) | |
| 381 { | |
| 382 statements->remove(i); | |
| 383 statements->insert(i, a); | |
| 384 continue; | |
| 385 } | |
| 386 s = s->semantic(sc); | |
| 387 statements->data[i] = s; | |
| 388 if (s) | |
| 389 { | |
| 390 Statement *sentry; | |
| 391 Statement *sexception; | |
| 392 Statement *sfinally; | |
| 393 | |
| 394 s->scopeCode(&sentry, &sexception, &sfinally); | |
| 395 if (sentry) | |
| 396 { | |
| 397 sentry = sentry->semantic(sc); | |
| 398 statements->data[i] = sentry; | |
| 399 } | |
| 400 if (sexception) | |
| 401 { | |
| 402 if (i + 1 == statements->dim && !sfinally) | |
| 403 { | |
| 404 #if 1 | |
| 405 sexception = sexception->semantic(sc); | |
| 406 #else | |
| 407 statements->push(sexception); | |
| 408 if (sfinally) | |
| 409 // Assume sexception does not throw | |
| 410 statements->push(sfinally); | |
| 411 #endif | |
| 412 } | |
| 413 else | |
| 414 { | |
| 415 /* Rewrite: | |
| 416 * s; s1; s2; | |
| 417 * As: | |
| 418 * s; | |
| 419 * try { s1; s2; } | |
| 420 * catch (Object __o) | |
| 421 * { sexception; throw __o; } | |
| 422 */ | |
| 423 Statement *body; | |
| 424 Statements *a = new Statements(); | |
| 425 | |
| 426 for (int j = i + 1; j < statements->dim; j++) | |
| 427 { | |
| 428 a->push(statements->data[j]); | |
| 429 } | |
| 430 body = new CompoundStatement(0, a); | |
| 431 body = new ScopeStatement(0, body); | |
| 432 | |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
433 Identifier *id = Lexer::uniqueId("__o"); |
| 159 | 434 |
| 435 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id)); | |
| 436 handler = new CompoundStatement(0, sexception, handler); | |
| 437 | |
| 438 Array *catches = new Array(); | |
| 439 Catch *ctch = new Catch(0, NULL, id, handler); | |
| 440 catches->push(ctch); | |
| 441 s = new TryCatchStatement(0, body, catches); | |
| 442 | |
| 443 if (sfinally) | |
| 444 s = new TryFinallyStatement(0, s, sfinally); | |
| 445 s = s->semantic(sc); | |
| 446 statements->setDim(i + 1); | |
| 447 statements->push(s); | |
| 448 break; | |
| 449 } | |
| 450 } | |
| 451 else if (sfinally) | |
| 452 { | |
| 453 if (0 && i + 1 == statements->dim) | |
| 454 { | |
| 455 statements->push(sfinally); | |
| 456 } | |
| 457 else | |
| 458 { | |
| 459 /* Rewrite: | |
| 460 * s; s1; s2; | |
| 461 * As: | |
| 462 * s; try { s1; s2; } finally { sfinally; } | |
| 463 */ | |
| 464 Statement *body; | |
| 465 Statements *a = new Statements(); | |
| 466 | |
| 467 for (int j = i + 1; j < statements->dim; j++) | |
| 468 { | |
| 469 a->push(statements->data[j]); | |
| 470 } | |
| 471 body = new CompoundStatement(0, a); | |
| 472 s = new TryFinallyStatement(0, body, sfinally); | |
| 473 s = s->semantic(sc); | |
| 474 statements->setDim(i + 1); | |
| 475 statements->push(s); | |
| 476 break; | |
| 477 } | |
| 478 } | |
| 479 } | |
| 480 } | |
| 481 i++; | |
| 482 } | |
|
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|
483 if (statements->dim == 1 && !isAsmBlockStatement()) |
| 336 | 484 { |
| 485 return (Statement *)statements->data[0]; | |
| 486 } | |
| 159 | 487 return this; |
| 488 } | |
| 489 | |
| 490 Statements *CompoundStatement::flatten(Scope *sc) | |
| 491 { | |
| 492 return statements; | |
| 493 } | |
| 494 | |
| 495 ReturnStatement *CompoundStatement::isReturnStatement() | |
| 336 | 496 { |
| 159 | 497 ReturnStatement *rs = NULL; |
| 498 | |
| 336 | 499 for (int i = 0; i < statements->dim; i++) |
| 500 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 501 if (s) |
| 502 { | |
| 503 rs = s->isReturnStatement(); | |
| 504 if (rs) | |
| 505 break; | |
| 506 } | |
| 507 } | |
| 508 return rs; | |
| 509 } | |
| 510 | |
| 511 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 336 | 512 { |
| 513 for (int i = 0; i < statements->dim; i++) | |
| 514 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 515 if (s) |
| 516 s->toCBuffer(buf, hgs); | |
| 517 } | |
| 518 } | |
| 519 | |
| 520 int CompoundStatement::usesEH() | |
| 521 { | |
| 522 for (int i = 0; i < statements->dim; i++) | |
| 336 | 523 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 524 if (s && s->usesEH()) |
| 525 return TRUE; | |
| 526 } | |
| 527 return FALSE; | |
| 528 } | |
| 529 | |
| 336 | 530 int CompoundStatement::blockExit() |
| 531 { | |
| 532 //printf("CompoundStatement::blockExit(%p) %d\n", this, statements->dim); | |
| 533 int result = BEfallthru; | |
| 534 for (size_t i = 0; i < statements->dim; i++) | |
| 535 { Statement *s = (Statement *) statements->data[i]; | |
| 536 if (s) | |
| 537 { | |
| 538 //printf("result = x%x\n", result); | |
| 539 //printf("%s\n", s->toChars()); | |
| 540 if (!(result & BEfallthru) && !s->comeFrom()) | |
| 541 { | |
| 542 if (global.params.warnings) | |
| 543 { fprintf(stdmsg, "warning - "); | |
| 544 s->error("statement is not reachable"); | |
| 545 } | |
| 546 } | |
| 547 | |
| 548 result &= ~BEfallthru; | |
| 549 result |= s->blockExit(); | |
| 550 } | |
| 551 } | |
| 552 return result; | |
| 553 } | |
| 554 | |
| 159 | 555 int CompoundStatement::comeFrom() |
| 556 { int comefrom = FALSE; | |
| 557 | |
| 558 //printf("CompoundStatement::comeFrom()\n"); | |
| 559 for (int i = 0; i < statements->dim; i++) | |
| 560 { Statement *s = (Statement *)statements->data[i]; | |
| 561 | |
| 562 if (!s) | |
| 563 continue; | |
| 564 | |
| 565 comefrom |= s->comeFrom(); | |
| 566 } | |
| 567 return comefrom; | |
| 568 } | |
| 569 | |
| 570 | |
| 571 /**************************** UnrolledLoopStatement ***************************/ | |
| 572 | |
| 573 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s) | |
| 574 : Statement(loc) | |
| 575 { | |
| 576 statements = s; | |
| 309 | 577 enclosinghandler = NULL; |
| 159 | 578 } |
| 579 | |
| 580 Statement *UnrolledLoopStatement::syntaxCopy() | |
| 581 { | |
| 582 Statements *a = new Statements(); | |
| 583 a->setDim(statements->dim); | |
| 584 for (size_t i = 0; i < statements->dim; i++) | |
| 585 { Statement *s = (Statement *)statements->data[i]; | |
| 586 if (s) | |
| 587 s = s->syntaxCopy(); | |
| 588 a->data[i] = s; | |
| 589 } | |
| 590 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
| 591 return cs; | |
| 592 } | |
| 593 | |
| 594 | |
| 595 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
| 596 { | |
| 597 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 598 | |
| 309 | 599 enclosinghandler = sc->tfOfTry; |
| 159 | 600 |
| 601 sc->noctor++; | |
| 602 Scope *scd = sc->push(); | |
| 603 scd->sbreak = this; | |
| 604 scd->scontinue = this; | |
| 605 | |
| 606 for (size_t i = 0; i < statements->dim; i++) | |
| 607 { | |
| 608 Statement *s = (Statement *) statements->data[i]; | |
| 609 if (s) | |
| 610 { | |
| 611 s = s->semantic(scd); | |
| 612 statements->data[i] = s; | |
| 613 } | |
| 614 } | |
| 615 | |
| 616 scd->pop(); | |
| 617 sc->noctor--; | |
| 618 return this; | |
| 619 } | |
| 620 | |
| 621 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 622 { | |
| 623 buf->writestring("unrolled {"); | |
| 624 buf->writenl(); | |
| 625 | |
| 626 for (size_t i = 0; i < statements->dim; i++) | |
| 627 { Statement *s; | |
| 628 | |
| 629 s = (Statement *) statements->data[i]; | |
| 630 if (s) | |
| 631 s->toCBuffer(buf, hgs); | |
| 632 } | |
| 633 | |
| 634 buf->writeByte('}'); | |
| 635 buf->writenl(); | |
| 636 } | |
| 637 | |
| 638 int UnrolledLoopStatement::hasBreak() | |
| 639 { | |
| 640 return TRUE; | |
| 641 } | |
| 642 | |
| 643 int UnrolledLoopStatement::hasContinue() | |
| 644 { | |
| 645 return TRUE; | |
| 646 } | |
| 647 | |
| 648 int UnrolledLoopStatement::usesEH() | |
| 649 { | |
| 650 for (size_t i = 0; i < statements->dim; i++) | |
| 336 | 651 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 652 if (s && s->usesEH()) |
| 653 return TRUE; | |
| 654 } | |
| 655 return FALSE; | |
| 656 } | |
| 657 | |
| 336 | 658 int UnrolledLoopStatement::blockExit() |
| 659 { | |
| 660 int result = BEfallthru; | |
| 661 for (size_t i = 0; i < statements->dim; i++) | |
| 662 { Statement *s = (Statement *) statements->data[i]; | |
| 663 if (s) | |
| 664 { | |
| 665 int r = s->blockExit(); | |
| 666 result |= r & ~(BEbreak | BEcontinue); | |
| 667 } | |
| 668 } | |
| 669 return result; | |
| 670 } | |
| 671 | |
| 159 | 672 int UnrolledLoopStatement::comeFrom() |
| 673 { int comefrom = FALSE; | |
| 674 | |
| 675 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
| 676 for (size_t i = 0; i < statements->dim; i++) | |
| 677 { Statement *s = (Statement *)statements->data[i]; | |
| 678 | |
| 679 if (!s) | |
| 680 continue; | |
| 681 | |
| 682 comefrom |= s->comeFrom(); | |
| 683 } | |
| 684 return comefrom; | |
| 685 } | |
| 686 | |
| 687 | |
| 688 /******************************** ScopeStatement ***************************/ | |
| 689 | |
| 690 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
| 691 : Statement(loc) | |
| 692 { | |
| 693 this->statement = s; | |
| 694 } | |
| 695 | |
| 696 Statement *ScopeStatement::syntaxCopy() | |
| 697 { | |
| 698 Statement *s; | |
| 699 | |
| 700 s = statement ? statement->syntaxCopy() : NULL; | |
| 701 s = new ScopeStatement(loc, s); | |
| 702 return s; | |
| 703 } | |
| 704 | |
| 705 | |
| 706 Statement *ScopeStatement::semantic(Scope *sc) | |
| 707 { ScopeDsymbol *sym; | |
| 708 | |
| 709 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
| 710 if (statement) | |
| 711 { Statements *a; | |
| 712 | |
| 713 sym = new ScopeDsymbol(); | |
| 714 sym->parent = sc->scopesym; | |
| 715 sc = sc->push(sym); | |
| 716 | |
| 717 a = statement->flatten(sc); | |
| 718 if (a) | |
| 719 { | |
| 720 statement = new CompoundStatement(loc, a); | |
| 721 } | |
| 722 | |
| 723 statement = statement->semantic(sc); | |
| 724 if (statement) | |
| 725 { | |
| 726 Statement *sentry; | |
| 727 Statement *sexception; | |
| 728 Statement *sfinally; | |
| 729 | |
| 730 statement->scopeCode(&sentry, &sexception, &sfinally); | |
| 731 if (sfinally) | |
| 732 { | |
| 733 //printf("adding sfinally\n"); | |
| 734 statement = new CompoundStatement(loc, statement, sfinally); | |
| 735 } | |
| 736 } | |
| 737 | |
| 738 sc->pop(); | |
| 739 } | |
| 740 return this; | |
| 741 } | |
| 742 | |
| 743 int ScopeStatement::hasBreak() | |
| 744 { | |
| 745 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
| 746 return statement ? statement->hasBreak() : FALSE; | |
| 747 } | |
| 748 | |
| 749 int ScopeStatement::hasContinue() | |
| 750 { | |
| 751 return statement ? statement->hasContinue() : FALSE; | |
| 752 } | |
| 753 | |
| 754 int ScopeStatement::usesEH() | |
| 755 { | |
| 756 return statement ? statement->usesEH() : FALSE; | |
| 757 } | |
| 758 | |
| 336 | 759 int ScopeStatement::blockExit() |
| 760 { | |
| 761 //printf("ScopeStatement::blockExit(%p)\n", statement); | |
| 762 return statement ? statement->blockExit() : BEfallthru; | |
| 763 } | |
| 764 | |
| 159 | 765 int ScopeStatement::comeFrom() |
| 766 { | |
| 767 //printf("ScopeStatement::comeFrom()\n"); | |
| 768 return statement ? statement->comeFrom() : FALSE; | |
| 769 } | |
| 770 | |
| 771 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 772 { | |
| 773 buf->writeByte('{'); | |
| 774 buf->writenl(); | |
| 775 | |
| 776 if (statement) | |
| 777 statement->toCBuffer(buf, hgs); | |
| 778 | |
| 779 buf->writeByte('}'); | |
| 780 buf->writenl(); | |
| 781 } | |
| 782 | |
| 783 /******************************** WhileStatement ***************************/ | |
| 784 | |
| 785 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
| 786 : Statement(loc) | |
| 787 { | |
| 788 condition = c; | |
| 789 body = b; | |
| 309 | 790 enclosinghandler = NULL; |
| 159 | 791 } |
| 792 | |
| 793 Statement *WhileStatement::syntaxCopy() | |
| 794 { | |
| 795 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 796 return s; | |
| 797 } | |
| 798 | |
| 799 | |
| 800 Statement *WhileStatement::semantic(Scope *sc) | |
| 801 { | |
| 802 #if 0 | |
| 803 if (condition->op == TOKmatch) | |
| 804 { | |
| 805 /* Rewrite while (condition) body as: | |
| 806 * if (condition) | |
| 807 * do | |
| 808 * body | |
| 809 * while ((_match = _match.opNext), _match); | |
| 810 */ | |
| 811 | |
| 812 Expression *ew = new IdentifierExp(0, Id::_match); | |
| 813 ew = new DotIdExp(0, ew, Id::next); | |
| 814 ew = new AssignExp(0, new IdentifierExp(0, Id::_match), ew); | |
| 815 ////ew = new EqualExp(TOKnotequal, 0, ew, new NullExp(0)); | |
| 816 Expression *ev = new IdentifierExp(0, Id::_match); | |
| 817 //ev = new CastExp(0, ev, Type::tvoidptr); | |
| 818 ew = new CommaExp(0, ew, ev); | |
| 819 Statement *sw = new DoStatement(loc, body, ew); | |
| 820 Statement *si = new IfStatement(loc, condition, sw, NULL); | |
| 821 return si->semantic(sc); | |
| 822 } | |
| 823 #endif | |
| 824 | |
| 309 | 825 enclosinghandler = sc->tfOfTry; |
| 159 | 826 |
| 827 condition = condition->semantic(sc); | |
| 828 condition = resolveProperties(sc, condition); | |
| 829 condition = condition->optimize(WANTvalue); | |
| 830 condition = condition->checkToBoolean(); | |
| 831 | |
| 832 sc->noctor++; | |
| 833 | |
| 834 Scope *scd = sc->push(); | |
| 835 scd->sbreak = this; | |
| 836 scd->scontinue = this; | |
| 837 if (body) | |
| 838 body = body->semantic(scd); | |
| 839 scd->pop(); | |
| 840 | |
| 841 sc->noctor--; | |
| 842 | |
| 843 return this; | |
| 844 } | |
| 845 | |
| 846 int WhileStatement::hasBreak() | |
| 847 { | |
| 848 return TRUE; | |
| 849 } | |
| 850 | |
| 851 int WhileStatement::hasContinue() | |
| 852 { | |
| 853 return TRUE; | |
| 854 } | |
| 855 | |
| 856 int WhileStatement::usesEH() | |
| 857 { | |
| 858 return body ? body->usesEH() : 0; | |
| 859 } | |
| 860 | |
| 336 | 861 int WhileStatement::blockExit() |
| 862 { | |
| 863 //printf("WhileStatement::blockExit(%p)\n", this); | |
| 864 | |
| 865 int result = BEnone; | |
| 866 if (condition->canThrow()) | |
| 867 result |= BEthrow; | |
| 868 if (condition->isBool(TRUE)) | |
| 869 { | |
| 870 if (body) | |
| 871 { result |= body->blockExit(); | |
| 872 if (result & BEbreak) | |
| 873 result |= BEfallthru; | |
| 874 } | |
| 875 } | |
| 876 else if (condition->isBool(FALSE)) | |
| 877 { | |
| 878 result |= BEfallthru; | |
| 879 } | |
| 880 else | |
| 881 { | |
| 882 if (body) | |
| 883 result |= body->blockExit(); | |
| 884 result |= BEfallthru; | |
| 885 } | |
| 886 result &= ~(BEbreak | BEcontinue); | |
| 887 return result; | |
| 888 } | |
| 889 | |
| 159 | 890 int WhileStatement::comeFrom() |
| 891 { | |
| 892 if (body) | |
| 893 return body->comeFrom(); | |
| 894 return FALSE; | |
| 895 } | |
| 896 | |
| 897 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 898 { | |
| 899 buf->writestring("while ("); | |
| 900 condition->toCBuffer(buf, hgs); | |
| 901 buf->writebyte(')'); | |
| 902 buf->writenl(); | |
| 903 if (body) | |
| 904 body->toCBuffer(buf, hgs); | |
| 905 } | |
| 906 | |
| 907 /******************************** DoStatement ***************************/ | |
| 908 | |
| 909 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
| 910 : Statement(loc) | |
| 911 { | |
| 912 body = b; | |
| 913 condition = c; | |
| 309 | 914 enclosinghandler = NULL; |
| 159 | 915 } |
| 916 | |
| 917 Statement *DoStatement::syntaxCopy() | |
| 918 { | |
| 919 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
| 920 return s; | |
| 921 } | |
| 922 | |
| 923 | |
| 924 Statement *DoStatement::semantic(Scope *sc) | |
| 925 { | |
| 309 | 926 enclosinghandler = sc->tfOfTry; |
| 159 | 927 |
| 928 sc->noctor++; | |
| 929 if (body) | |
| 930 body = body->semanticScope(sc, this, this); | |
| 931 sc->noctor--; | |
| 932 condition = condition->semantic(sc); | |
| 933 condition = resolveProperties(sc, condition); | |
| 934 condition = condition->optimize(WANTvalue); | |
| 935 | |
| 936 condition = condition->checkToBoolean(); | |
| 937 | |
| 938 return this; | |
| 939 } | |
| 940 | |
| 941 int DoStatement::hasBreak() | |
| 942 { | |
| 943 return TRUE; | |
| 944 } | |
| 945 | |
| 946 int DoStatement::hasContinue() | |
| 947 { | |
| 948 return TRUE; | |
| 949 } | |
| 950 | |
| 951 int DoStatement::usesEH() | |
| 952 { | |
| 953 return body ? body->usesEH() : 0; | |
| 954 } | |
| 955 | |
| 336 | 956 int DoStatement::blockExit() |
| 957 { int result; | |
| 958 | |
| 959 if (body) | |
| 960 { result = body->blockExit(); | |
| 961 if (result == BEbreak) | |
| 962 return BEfallthru; | |
| 963 if (result & BEcontinue) | |
| 964 result |= BEfallthru; | |
| 965 } | |
| 966 else | |
| 967 result = BEfallthru; | |
| 968 if (result & BEfallthru) | |
| 969 { if (condition->canThrow()) | |
| 970 result |= BEthrow; | |
| 971 if (!(result & BEbreak) && condition->isBool(TRUE)) | |
| 972 result &= ~BEfallthru; | |
| 973 } | |
| 974 result &= ~(BEbreak | BEcontinue); | |
| 975 return result; | |
| 976 } | |
| 977 | |
| 159 | 978 int DoStatement::comeFrom() |
| 979 { | |
| 980 if (body) | |
| 981 return body->comeFrom(); | |
| 982 return FALSE; | |
| 983 } | |
| 984 | |
| 985 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 986 { | |
| 987 buf->writestring("do"); | |
| 988 buf->writenl(); | |
| 989 if (body) | |
| 990 body->toCBuffer(buf, hgs); | |
| 991 buf->writestring("while ("); | |
| 992 condition->toCBuffer(buf, hgs); | |
| 993 buf->writebyte(')'); | |
| 994 } | |
| 995 | |
| 996 /******************************** ForStatement ***************************/ | |
| 997 | |
| 998 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
| 999 : Statement(loc) | |
| 1000 { | |
| 1001 this->init = init; | |
| 1002 this->condition = condition; | |
| 1003 this->increment = increment; | |
| 1004 this->body = body; | |
| 309 | 1005 this->enclosinghandler = NULL; |
| 159 | 1006 } |
| 1007 | |
| 1008 Statement *ForStatement::syntaxCopy() | |
| 1009 { | |
| 1010 Statement *i = NULL; | |
| 1011 if (init) | |
| 1012 i = init->syntaxCopy(); | |
| 1013 Expression *c = NULL; | |
| 1014 if (condition) | |
| 1015 c = condition->syntaxCopy(); | |
| 1016 Expression *inc = NULL; | |
| 1017 if (increment) | |
| 1018 inc = increment->syntaxCopy(); | |
| 1019 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
| 1020 return s; | |
| 1021 } | |
| 1022 | |
| 1023 Statement *ForStatement::semantic(Scope *sc) | |
| 1024 { | |
| 309 | 1025 enclosinghandler = sc->tfOfTry; |
| 159 | 1026 |
| 1027 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1028 sym->parent = sc->scopesym; | |
| 1029 sc = sc->push(sym); | |
| 1030 if (init) | |
| 1031 init = init->semantic(sc); | |
| 1032 if (!condition) | |
| 1033 // Use a default value | |
| 1034 condition = new IntegerExp(loc, 1, Type::tboolean); | |
| 1035 sc->noctor++; | |
|
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1036 if (condition) |
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1037 { |
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1038 condition = condition->semantic(sc); |
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1039 condition = resolveProperties(sc, condition); |
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1040 condition = condition->optimize(WANTvalue); |
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1041 condition = condition->checkToBoolean(); |
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1042 } |
| 159 | 1043 if (increment) |
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1044 { increment = increment->semantic(sc); |
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1045 increment = resolveProperties(sc, increment); |
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1046 } |
| 159 | 1047 |
| 1048 sc->sbreak = this; | |
| 1049 sc->scontinue = this; | |
| 1050 body = body->semantic(sc); | |
| 1051 sc->noctor--; | |
| 1052 | |
| 1053 sc->pop(); | |
| 1054 return this; | |
| 1055 } | |
| 1056 | |
| 1057 void ForStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 1058 { | |
| 1059 //printf("ForStatement::scopeCode()\n"); | |
| 1060 //print(); | |
| 1061 if (init) | |
| 1062 init->scopeCode(sentry, sexception, sfinally); | |
| 1063 else | |
| 1064 Statement::scopeCode(sentry, sexception, sfinally); | |
| 1065 } | |
| 1066 | |
| 1067 int ForStatement::hasBreak() | |
| 1068 { | |
| 1069 //printf("ForStatement::hasBreak()\n"); | |
| 1070 return TRUE; | |
| 1071 } | |
| 1072 | |
| 1073 int ForStatement::hasContinue() | |
| 1074 { | |
| 1075 return TRUE; | |
| 1076 } | |
| 1077 | |
| 1078 int ForStatement::usesEH() | |
| 1079 { | |
| 1080 return (init && init->usesEH()) || body->usesEH(); | |
| 1081 } | |
| 1082 | |
| 336 | 1083 int ForStatement::blockExit() |
| 1084 { int result = BEfallthru; | |
| 1085 | |
| 1086 if (init) | |
| 1087 { result = init->blockExit(); | |
| 1088 if (!(result & BEfallthru)) | |
| 1089 return result; | |
| 1090 } | |
| 1091 if (condition) | |
| 1092 { if (condition->canThrow()) | |
| 1093 result |= BEthrow; | |
| 1094 } | |
| 1095 else | |
| 1096 result &= ~BEfallthru; // the body must do the exiting | |
| 1097 if (body) | |
| 1098 { int r = body->blockExit(); | |
| 1099 if (r & BEbreak) | |
| 1100 result |= BEfallthru; | |
| 1101 result |= r & ~(BEbreak | BEcontinue); | |
| 1102 } | |
| 1103 if (increment && increment->canThrow()) | |
| 1104 result |= BEthrow; | |
| 1105 return result; | |
| 1106 } | |
| 1107 | |
| 159 | 1108 int ForStatement::comeFrom() |
| 1109 { | |
| 1110 //printf("ForStatement::comeFrom()\n"); | |
| 1111 if (body) | |
| 1112 { int result = body->comeFrom(); | |
| 1113 //printf("result = %d\n", result); | |
| 1114 return result; | |
| 1115 } | |
| 1116 return FALSE; | |
| 1117 } | |
| 1118 | |
| 1119 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1120 { | |
| 1121 buf->writestring("for ("); | |
| 1122 if (init) | |
| 1123 { | |
| 1124 hgs->FLinit.init++; | |
| 1125 hgs->FLinit.decl = 0; | |
| 1126 init->toCBuffer(buf, hgs); | |
| 1127 if (hgs->FLinit.decl > 0) | |
| 1128 buf->writebyte(';'); | |
| 1129 hgs->FLinit.decl = 0; | |
| 1130 hgs->FLinit.init--; | |
| 1131 } | |
| 1132 else | |
| 1133 buf->writebyte(';'); | |
| 1134 if (condition) | |
| 1135 { buf->writebyte(' '); | |
| 1136 condition->toCBuffer(buf, hgs); | |
| 1137 } | |
| 1138 buf->writebyte(';'); | |
| 1139 if (increment) | |
| 1140 { buf->writebyte(' '); | |
| 1141 increment->toCBuffer(buf, hgs); | |
| 1142 } | |
| 1143 buf->writebyte(')'); | |
| 1144 buf->writenl(); | |
| 1145 buf->writebyte('{'); | |
| 1146 buf->writenl(); | |
| 1147 body->toCBuffer(buf, hgs); | |
| 1148 buf->writebyte('}'); | |
| 1149 buf->writenl(); | |
| 1150 } | |
| 1151 | |
| 1152 /******************************** ForeachStatement ***************************/ | |
| 1153 | |
| 1154 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Arguments *arguments, | |
| 1155 Expression *aggr, Statement *body) | |
| 1156 : Statement(loc) | |
| 1157 { | |
| 1158 this->op = op; | |
| 1159 this->arguments = arguments; | |
| 1160 this->aggr = aggr; | |
| 1161 this->body = body; | |
| 309 | 1162 this->enclosinghandler = NULL; |
| 159 | 1163 |
| 1164 this->key = NULL; | |
| 1165 this->value = NULL; | |
| 1166 | |
| 1167 this->func = NULL; | |
| 1168 } | |
| 1169 | |
| 1170 Statement *ForeachStatement::syntaxCopy() | |
| 1171 { | |
| 1172 Arguments *args = Argument::arraySyntaxCopy(arguments); | |
| 1173 Expression *exp = aggr->syntaxCopy(); | |
| 1174 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, | |
| 1175 body ? body->syntaxCopy() : NULL); | |
| 1176 return s; | |
| 1177 } | |
| 1178 | |
| 1179 Statement *ForeachStatement::semantic(Scope *sc) | |
| 1180 { | |
| 1181 //printf("ForeachStatement::semantic() %p\n", this); | |
| 1182 ScopeDsymbol *sym; | |
| 1183 Statement *s = this; | |
|
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1184 size_t dim = arguments->dim; |
| 159 | 1185 TypeAArray *taa = NULL; |
| 1186 | |
| 1187 Type *tn = NULL; | |
| 1188 Type *tnv = NULL; | |
| 1189 | |
| 309 | 1190 enclosinghandler = sc->tfOfTry; |
| 159 | 1191 |
| 1192 func = sc->func; | |
| 1193 if (func->fes) | |
| 1194 func = func->fes->func; | |
| 1195 | |
| 1196 aggr = aggr->semantic(sc); | |
| 1197 aggr = resolveProperties(sc, aggr); | |
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1198 aggr = aggr->optimize(WANTvalue); |
| 159 | 1199 if (!aggr->type) |
| 1200 { | |
| 1201 error("invalid foreach aggregate %s", aggr->toChars()); | |
| 1202 return this; | |
| 1203 } | |
| 1204 | |
| 1205 inferApplyArgTypes(op, arguments, aggr); | |
| 1206 | |
| 1207 /* Check for inference errors | |
| 1208 */ | |
| 1209 if (dim != arguments->dim) | |
| 1210 { | |
| 1211 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
| 1212 error("cannot uniquely infer foreach argument types"); | |
| 1213 return this; | |
| 1214 } | |
| 1215 | |
| 1216 Type *tab = aggr->type->toBasetype(); | |
| 1217 | |
| 1218 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
| 1219 { | |
| 1220 if (dim < 1 || dim > 2) | |
| 1221 { | |
| 1222 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
| 1223 return s; | |
| 1224 } | |
| 1225 | |
| 1226 TypeTuple *tuple = (TypeTuple *)tab; | |
| 1227 Statements *statements = new Statements(); | |
| 1228 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
| 1229 size_t n; | |
| 1230 TupleExp *te = NULL; | |
| 1231 if (aggr->op == TOKtuple) // expression tuple | |
| 1232 { te = (TupleExp *)aggr; | |
| 1233 n = te->exps->dim; | |
| 1234 } | |
| 1235 else if (aggr->op == TOKtype) // type tuple | |
| 1236 { | |
| 1237 n = Argument::dim(tuple->arguments); | |
| 1238 } | |
| 1239 else | |
| 1240 assert(0); | |
| 1241 for (size_t j = 0; j < n; j++) | |
| 1242 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
| 1243 Expression *e; | |
| 1244 Type *t; | |
| 1245 if (te) | |
| 1246 e = (Expression *)te->exps->data[k]; | |
| 1247 else | |
| 1248 t = Argument::getNth(tuple->arguments, k)->type; | |
| 1249 Argument *arg = (Argument *)arguments->data[0]; | |
| 1250 Statements *st = new Statements(); | |
| 1251 | |
| 1252 if (dim == 2) | |
| 1253 { // Declare key | |
| 1254 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1255 error("no storage class for key %s", arg->ident->toChars()); | |
| 1256 TY keyty = arg->type->ty; | |
|
275
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|
1257 if (global.params.is64bit) |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
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parents:
262
diff
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|
1258 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1259 if (keyty != Tint32 && keyty != Tuns32 && keyty != Tint64 && keyty != Tuns64) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1260 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1261 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
changeset
|
1262 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1263 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1264 else if (keyty != Tint32 && keyty != Tuns32) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1265 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1266 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
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diff
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|
1267 } |
| 159 | 1268 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); |
| 1269 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1270 var->storage_class |= STCconst; | |
| 1271 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1272 st->push(new ExpStatement(loc, de)); | |
| 1273 arg = (Argument *)arguments->data[1]; // value | |
| 1274 } | |
| 1275 // Declare value | |
| 1276 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1277 error("no storage class for value %s", arg->ident->toChars()); | |
| 1278 Dsymbol *var; | |
| 1279 if (te) | |
| 1280 { | |
| 1281 if (e->type->toBasetype()->ty == Tfunction && | |
| 1282 e->op == TOKvar) | |
| 1283 { VarExp *ve = (VarExp *)e; | |
| 1284 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
| 1285 } | |
| 1286 else | |
| 1287 { | |
| 1288 arg->type = e->type; | |
| 1289 Initializer *ie = new ExpInitializer(0, e); | |
| 1290 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1291 if (e->isConst()) | |
| 1292 v->storage_class |= STCconst; | |
| 1293 var = v; | |
| 1294 } | |
| 1295 } | |
| 1296 else | |
| 1297 { | |
| 1298 var = new AliasDeclaration(loc, arg->ident, t); | |
| 1299 } | |
| 1300 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1301 st->push(new ExpStatement(loc, de)); | |
| 1302 | |
| 1303 st->push(body->syntaxCopy()); | |
| 1304 s = new CompoundStatement(loc, st); | |
| 1305 s = new ScopeStatement(loc, s); | |
| 1306 statements->push(s); | |
| 1307 } | |
| 1308 | |
| 1309 s = new UnrolledLoopStatement(loc, statements); | |
| 1310 s = s->semantic(sc); | |
| 1311 return s; | |
| 1312 } | |
| 1313 | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1314 for (size_t i = 0; i < dim; i++) |
| 159 | 1315 { Argument *arg = (Argument *)arguments->data[i]; |
| 1316 if (!arg->type) | |
| 1317 { | |
| 1318 error("cannot infer type for %s", arg->ident->toChars()); | |
| 1319 return this; | |
| 1320 } | |
| 1321 } | |
| 1322 | |
| 1323 sym = new ScopeDsymbol(); | |
| 1324 sym->parent = sc->scopesym; | |
| 1325 sc = sc->push(sym); | |
| 1326 | |
| 1327 sc->noctor++; | |
| 1328 | |
| 1329 switch (tab->ty) | |
| 1330 { | |
| 1331 case Tarray: | |
| 1332 case Tsarray: | |
| 1333 if (dim < 1 || dim > 2) | |
| 1334 { | |
| 1335 error("only one or two arguments for array foreach"); | |
| 1336 break; | |
| 1337 } | |
| 1338 | |
| 1339 /* Look for special case of parsing char types out of char type | |
| 1340 * array. | |
| 1341 */ | |
| 1342 tn = tab->nextOf()->toBasetype(); | |
| 1343 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) | |
| 1344 { Argument *arg; | |
| 1345 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
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diff
changeset
|
1346 int i = (dim == 1) ? 0 : 1; // index of value |
| 159 | 1347 arg = (Argument *)arguments->data[i]; |
| 1348 arg->type = arg->type->semantic(loc, sc); | |
| 1349 tnv = arg->type->toBasetype(); | |
| 1350 if (tnv->ty != tn->ty && | |
| 1351 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
| 1352 { | |
| 1353 if (arg->storageClass & STCref) | |
| 1354 error("foreach: value of UTF conversion cannot be ref"); | |
| 1355 if (dim == 2) | |
| 1356 { arg = (Argument *)arguments->data[0]; | |
| 1357 if (arg->storageClass & STCref) | |
| 1358 error("foreach: key cannot be ref"); | |
| 1359 } | |
| 1360 goto Lapply; | |
| 1361 } | |
| 1362 } | |
| 1363 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1364 for (size_t i = 0; i < dim; i++) |
| 159 | 1365 { // Declare args |
| 1366 Argument *arg = (Argument *)arguments->data[i]; | |
| 1367 VarDeclaration *var; | |
| 1368 | |
| 1369 var = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
| 1370 var->storage_class |= STCforeach; | |
| 1371 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
| 1372 #if 1 | |
| 1373 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1374 de->semantic(sc); | |
| 1375 #else | |
| 1376 var->semantic(sc); | |
| 1377 if (!sc->insert(var)) | |
| 1378 error("%s already defined", var->ident->toChars()); | |
| 1379 #endif | |
| 1380 if (dim == 2 && i == 0) | |
| 1381 key = var; | |
| 1382 else | |
| 1383 value = var; | |
| 1384 } | |
| 1385 | |
| 1386 sc->sbreak = this; | |
| 1387 sc->scontinue = this; | |
| 1388 body = body->semantic(sc); | |
| 1389 | |
| 1390 if (!value->type->equals(tab->next)) | |
| 1391 { | |
| 1392 if (aggr->op == TOKstring) | |
| 1393 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
| 1394 else | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1395 error("foreach: %s is not an array of %s", |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1396 tab->toChars(), value->type->toChars()); |
| 159 | 1397 } |
| 1398 | |
|
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diff
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|
1399 if (key) |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
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parents:
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diff
changeset
|
1400 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1401 if (global.params.is64bit) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1402 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
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parents:
262
diff
changeset
|
1403 if (key->type->ty != Tint32 && key->type->ty != Tuns32 && key->type->ty != Tint64 && key->type->ty != Tuns64) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1404 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1405 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
changeset
|
1406 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1407 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1408 else if (key->type->ty != Tint32 && key->type->ty != Tuns32) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1409 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1410 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1411 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1412 } |
| 159 | 1413 |
| 1414 if (key && key->storage_class & (STCout | STCref)) | |
| 1415 error("foreach: key cannot be out or ref"); | |
| 1416 break; | |
| 1417 | |
| 1418 case Taarray: | |
| 1419 taa = (TypeAArray *)tab; | |
| 1420 if (dim < 1 || dim > 2) | |
| 1421 { | |
| 1422 error("only one or two arguments for associative array foreach"); | |
| 1423 break; | |
| 1424 } | |
| 1425 if (op == TOKforeach_reverse) | |
| 1426 { | |
| 1427 error("no reverse iteration on associative arrays"); | |
| 1428 } | |
| 1429 goto Lapply; | |
| 1430 | |
| 1431 case Tclass: | |
| 1432 case Tstruct: | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1433 #if DMDV2 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1434 { /* Look for range iteration, i.e. the properties |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1435 * .empty, .next, .retreat, .head and .rear |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1436 * foreach (e; range) { ... } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1437 * translates to: |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1438 * for (auto __r = range; !__r.empty; __r.next) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1439 * { auto e = __r.head; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1440 * ... |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1441 * } |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1442 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1443 if (dim != 1) // only one argument allowed with ranges |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1444 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1445 AggregateDeclaration *ad = (tab->ty == Tclass) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1446 ? (AggregateDeclaration *)((TypeClass *)tab)->sym |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1447 : (AggregateDeclaration *)((TypeStruct *)tab)->sym; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1448 Identifier *idhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1449 Identifier *idnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1450 if (op == TOKforeach) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1451 { idhead = Id::Fhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1452 idnext = Id::Fnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1453 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1454 else |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1455 { idhead = Id::Frear; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1456 idnext = Id::Fretreat; |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1457 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1458 Dsymbol *shead = search_function(ad, idhead); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1459 if (!shead) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1460 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1461 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1462 /* Generate a temporary __r and initialize it with the aggregate. |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1463 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1464 Identifier *id = Identifier::generateId("__r"); |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1465 VarDeclaration *r = new VarDeclaration(loc, NULL, id, new ExpInitializer(loc, aggr)); |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1466 r->semantic(sc); |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1467 Statement *init = new DeclarationStatement(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1468 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1469 // !__r.empty |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1470 Expression *e = new VarExp(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1471 e = new DotIdExp(loc, e, Id::Fempty); |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1472 Expression *condition = new NotExp(loc, e); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1473 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1474 // __r.next |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1475 e = new VarExp(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1476 Expression *increment = new DotIdExp(loc, e, idnext); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1477 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1478 /* Declaration statement for e: |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1479 * auto e = __r.idhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1480 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1481 e = new VarExp(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1482 Expression *einit = new DotIdExp(loc, e, idhead); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1483 einit = einit->semantic(sc); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
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|
1484 Argument *arg = (Argument *)arguments->data[0]; |
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1485 VarDeclaration *ve = new VarDeclaration(loc, arg->type, arg->ident, new ExpInitializer(loc, einit)); |
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1486 ve->storage_class |= STCforeach; |
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1487 ve->storage_class |= arg->storageClass & (STCin | STCout | STCref | STCconst | STCinvariant); |
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1488 |
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1489 DeclarationExp *de = new DeclarationExp(loc, ve); |
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1490 |
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1491 Statement *body = new CompoundStatement(loc, |
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1492 new DeclarationStatement(loc, de), this->body); |
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1493 |
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1494 s = new ForStatement(loc, init, condition, increment, body); |
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1495 s = s->semantic(sc); |
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1496 break; |
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1497 } |
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1498 #endif |
| 159 | 1499 case Tdelegate: |
| 1500 Lapply: | |
| 1501 { FuncDeclaration *fdapply; | |
| 1502 Arguments *args; | |
| 1503 Expression *ec; | |
| 1504 Expression *e; | |
| 1505 FuncLiteralDeclaration *fld; | |
| 1506 Argument *a; | |
| 1507 Type *t; | |
| 1508 Expression *flde; | |
| 1509 Identifier *id; | |
| 1510 Type *tret; | |
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1511 TypeDelegate* dgty; |
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1512 TypeDelegate* dgty2; |
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1513 TypeDelegate* fldeTy; |
| 159 | 1514 |
| 1515 tret = func->type->nextOf(); | |
| 1516 | |
| 1517 // Need a variable to hold value from any return statements in body. | |
| 1518 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1519 { VarDeclaration *v; | |
| 1520 | |
| 1521 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 1522 v->noauto = 1; | |
| 1523 v->semantic(sc); | |
| 1524 if (!sc->insert(v)) | |
| 1525 assert(0); | |
| 1526 v->parent = sc->func; | |
| 1527 sc->func->vresult = v; | |
| 1528 } | |
| 1529 | |
| 1530 /* Turn body into the function literal: | |
| 1531 * int delegate(ref T arg) { body } | |
| 1532 */ | |
| 1533 args = new Arguments(); | |
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1534 for (size_t i = 0; i < dim; i++) |
| 159 | 1535 { Argument *arg = (Argument *)arguments->data[i]; |
| 1536 | |
| 1537 arg->type = arg->type->semantic(loc, sc); | |
| 1538 if (arg->storageClass & STCref) | |
| 1539 id = arg->ident; | |
| 1540 else | |
| 1541 { // Make a copy of the ref argument so it isn't | |
| 1542 // a reference. | |
| 1543 VarDeclaration *v; | |
| 1544 Initializer *ie; | |
|
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1545 |
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1546 id = Lexer::uniqueId("__applyArg", i); |
| 159 | 1547 |
| 1548 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1549 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1550 s = new DeclarationStatement(0, v); | |
| 1551 body = new CompoundStatement(loc, s, body); | |
| 1552 } | |
| 1553 a = new Argument(STCref, arg->type, id, NULL); | |
| 1554 args->push(a); | |
| 1555 } | |
| 1556 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1557 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1558 fld->fbody = body; | |
| 1559 flde = new FuncExp(loc, fld); | |
| 1560 flde = flde->semantic(sc); | |
| 1561 | |
| 1562 // Resolve any forward referenced goto's | |
| 1563 for (int i = 0; i < gotos.dim; i++) | |
| 1564 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1565 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1566 | |
| 1567 if (!gs->label->statement) | |
| 1568 { // 'Promote' it to this scope, and replace with a return | |
| 1569 cases.push(gs); | |
| 1570 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1571 cs->statements->data[0] = (void *)s; | |
| 1572 } | |
| 1573 } | |
| 1574 | |
| 1575 if (tab->ty == Taarray) | |
| 1576 { | |
| 1577 // Check types | |
| 1578 Argument *arg = (Argument *)arguments->data[0]; | |
| 1579 if (dim == 2) | |
| 1580 { | |
| 1581 if (arg->storageClass & STCref) | |
| 1582 error("foreach: index cannot be ref"); | |
| 1583 if (!arg->type->equals(taa->index)) | |
| 1584 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
| 1585 arg = (Argument *)arguments->data[1]; | |
| 1586 } | |
| 1587 if (!arg->type->equals(taa->nextOf())) | |
| 1588 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1589 | |
| 1590 /* Call: | |
| 1591 * _aaApply(aggr, keysize, flde) | |
| 1592 */ | |
|
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1593 //LDC: Build arguments. |
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1594 static FuncDeclaration *aaApply2_fd = NULL; |
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1595 static TypeDelegate* aaApply2_dg; |
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1596 if(!aaApply2_fd) { |
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1597 Arguments* args = new Arguments; |
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1598 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
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1599 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
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1600 Arguments* dgargs = new Arguments; |
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1601 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1602 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1603 aaApply2_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1604 args->push(new Argument(STCin, aaApply2_dg, NULL, NULL)); |
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1605 aaApply2_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply2"); |
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1606 } |
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1607 static FuncDeclaration *aaApply_fd = NULL; |
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1608 static TypeDelegate* aaApply_dg; |
|
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1609 if(!aaApply_fd) { |
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1610 Arguments* args = new Arguments; |
|
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1611 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
|
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1612 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
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1613 Arguments* dgargs = new Arguments; |
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1614 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1615 aaApply_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1616 args->push(new Argument(STCin, aaApply_dg, NULL, NULL)); |
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1617 aaApply_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply"); |
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1618 } |
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1619 if (dim == 2) { |
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1620 fdapply = aaApply2_fd; |
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1621 fldeTy = aaApply2_dg; |
|
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1622 } else { |
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1623 fdapply = aaApply_fd; |
|
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1624 fldeTy = aaApply_dg; |
|
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1625 } |
| 159 | 1626 ec = new VarExp(0, fdapply); |
| 1627 Expressions *exps = new Expressions(); | |
| 1628 exps->push(aggr); | |
| 1629 size_t keysize = taa->key->size(); | |
|
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1630 keysize = (keysize + (PTRSIZE-1)) & ~(PTRSIZE-1); |
| 159 | 1631 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); |
|
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1632 |
|
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|
1633 // LDC paint delegate argument to the type runtime expects |
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1634 if (!fldeTy->equals(flde->type)) |
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1635 { |
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1636 flde = new CastExp(loc, flde, flde->type); |
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1637 flde->type = fldeTy; |
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1638 } |
| 159 | 1639 exps->push(flde); |
|
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1640 |
| 159 | 1641 e = new CallExp(loc, ec, exps); |
| 1642 e->type = Type::tindex; // don't run semantic() on e | |
| 1643 } | |
| 1644 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1645 { | |
| 1646 /* Call: | |
| 1647 * _aApply(aggr, flde) | |
| 1648 */ | |
| 1649 static char fntab[9][3] = | |
| 1650 { "cc","cw","cd", | |
| 1651 "wc","cc","wd", | |
| 1652 "dc","dw","dd" | |
| 1653 }; | |
| 1654 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1655 int flag; | |
| 1656 | |
| 1657 switch (tn->ty) | |
| 1658 { | |
| 1659 case Tchar: flag = 0; break; | |
| 1660 case Twchar: flag = 3; break; | |
| 1661 case Tdchar: flag = 6; break; | |
| 1662 default: assert(0); | |
| 1663 } | |
| 1664 switch (tnv->ty) | |
| 1665 { | |
| 1666 case Tchar: flag += 0; break; | |
| 1667 case Twchar: flag += 1; break; | |
| 1668 case Tdchar: flag += 2; break; | |
| 1669 default: assert(0); | |
| 1670 } | |
| 1671 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
| 1672 int j = sprintf(fdname, "_aApply%s%.*s%d", r, 2, fntab[flag], dim); | |
| 1673 assert(j < sizeof(fdname)); | |
|
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1674 //LDC: Build arguments. |
|
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1675 Arguments* args = new Arguments; |
|
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1676 args->push(new Argument(STCin, tn->arrayOf(), NULL, NULL)); |
|
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1677 if (dim == 2) { |
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1678 Arguments* dgargs = new Arguments; |
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1679 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1680 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1681 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
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1682 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1683 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1684 } else { |
|
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|
1685 Arguments* dgargs = new Arguments; |
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1686 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1687 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
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1688 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1689 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1690 } |
| 159 | 1691 |
| 1692 ec = new VarExp(0, fdapply); | |
| 1693 Expressions *exps = new Expressions(); | |
| 1694 if (tab->ty == Tsarray) | |
| 1695 aggr = aggr->castTo(sc, tn->arrayOf()); | |
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1696 exps->push(aggr); |
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1697 |
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1698 // LDC paint delegate argument to the type runtime expects |
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1699 if (!dgty->equals(flde->type)) |
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1700 { |
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1701 flde = new CastExp(loc, flde, flde->type); |
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1702 flde->type = dgty; |
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1703 } |
| 159 | 1704 exps->push(flde); |
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1705 |
| 159 | 1706 e = new CallExp(loc, ec, exps); |
| 1707 e->type = Type::tindex; // don't run semantic() on e | |
| 1708 } | |
| 1709 else if (tab->ty == Tdelegate) | |
| 1710 { | |
| 1711 /* Call: | |
| 1712 * aggr(flde) | |
| 1713 */ | |
| 1714 Expressions *exps = new Expressions(); | |
| 1715 exps->push(flde); | |
| 1716 e = new CallExp(loc, aggr, exps); | |
| 1717 e = e->semantic(sc); | |
| 1718 if (e->type != Type::tint32) | |
| 1719 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1720 } | |
| 1721 else | |
| 1722 { | |
| 1723 /* Call: | |
| 1724 * aggr.apply(flde) | |
| 1725 */ | |
| 1726 ec = new DotIdExp(loc, aggr, | |
| 1727 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1728 : Id::apply); | |
| 1729 Expressions *exps = new Expressions(); | |
| 1730 exps->push(flde); | |
| 1731 e = new CallExp(loc, ec, exps); | |
| 1732 e = e->semantic(sc); | |
| 1733 if (e->type != Type::tint32) | |
| 1734 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1735 } | |
| 1736 | |
| 1737 if (!cases.dim) | |
| 1738 // Easy case, a clean exit from the loop | |
| 1739 s = new ExpStatement(loc, e); | |
| 1740 else | |
| 1741 { // Construct a switch statement around the return value | |
| 1742 // of the apply function. | |
| 1743 Statements *a = new Statements(); | |
| 1744 | |
| 1745 // default: break; takes care of cases 0 and 1 | |
| 1746 s = new BreakStatement(0, NULL); | |
| 1747 s = new DefaultStatement(0, s); | |
| 1748 a->push(s); | |
| 1749 | |
| 1750 // cases 2... | |
| 1751 for (int i = 0; i < cases.dim; i++) | |
| 1752 { | |
| 1753 s = (Statement *)cases.data[i]; | |
| 1754 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1755 a->push(s); | |
| 1756 } | |
| 1757 | |
| 1758 s = new CompoundStatement(loc, a); | |
| 1759 s = new SwitchStatement(loc, e, s); | |
| 1760 s = s->semantic(sc); | |
| 1761 } | |
| 1762 break; | |
| 1763 } | |
| 1764 | |
| 1765 default: | |
| 1766 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1767 break; | |
| 1768 } | |
| 1769 sc->noctor--; | |
| 1770 sc->pop(); | |
| 1771 return s; | |
| 1772 } | |
| 1773 | |
| 1774 int ForeachStatement::hasBreak() | |
| 1775 { | |
| 1776 return TRUE; | |
| 1777 } | |
| 1778 | |
| 1779 int ForeachStatement::hasContinue() | |
| 1780 { | |
| 1781 return TRUE; | |
| 1782 } | |
| 1783 | |
| 1784 int ForeachStatement::usesEH() | |
| 1785 { | |
| 1786 return body->usesEH(); | |
| 1787 } | |
| 1788 | |
| 336 | 1789 int ForeachStatement::blockExit() |
| 1790 { int result = BEfallthru; | |
| 1791 | |
| 1792 if (aggr->canThrow()) | |
| 1793 result |= BEthrow; | |
| 1794 | |
| 1795 if (body) | |
| 1796 { | |
| 1797 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 1798 } | |
| 1799 return result; | |
| 1800 } | |
| 1801 | |
| 159 | 1802 int ForeachStatement::comeFrom() |
| 1803 { | |
| 1804 if (body) | |
| 1805 return body->comeFrom(); | |
| 1806 return FALSE; | |
| 1807 } | |
| 1808 | |
| 1809 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1810 { | |
| 1811 buf->writestring(Token::toChars(op)); | |
| 1812 buf->writestring(" ("); | |
| 1813 for (int i = 0; i < arguments->dim; i++) | |
| 1814 { | |
| 1815 Argument *a = (Argument *)arguments->data[i]; | |
| 1816 if (i) | |
| 1817 buf->writestring(", "); | |
| 1818 if (a->storageClass & STCref) | |
| 1819 buf->writestring((global.params.Dversion == 1) | |
| 1820 ? (char*)"inout " : (char*)"ref "); | |
| 1821 if (a->type) | |
| 1822 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1823 else | |
| 1824 buf->writestring(a->ident->toChars()); | |
| 1825 } | |
| 1826 buf->writestring("; "); | |
| 1827 aggr->toCBuffer(buf, hgs); | |
| 1828 buf->writebyte(')'); | |
| 1829 buf->writenl(); | |
| 1830 buf->writebyte('{'); | |
| 1831 buf->writenl(); | |
| 1832 if (body) | |
| 1833 body->toCBuffer(buf, hgs); | |
| 1834 buf->writebyte('}'); | |
| 1835 buf->writenl(); | |
| 1836 } | |
| 1837 | |
| 1838 /******************************** IfStatement ***************************/ | |
| 1839 | |
| 1840 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody) | |
| 1841 : Statement(loc) | |
| 1842 { | |
| 1843 this->arg = arg; | |
| 1844 this->condition = condition; | |
| 1845 this->ifbody = ifbody; | |
| 1846 this->elsebody = elsebody; | |
| 1847 this->match = NULL; | |
| 1848 } | |
| 1849 | |
| 1850 Statement *IfStatement::syntaxCopy() | |
| 1851 { | |
| 1852 Statement *i = NULL; | |
| 1853 if (ifbody) | |
| 1854 i = ifbody->syntaxCopy(); | |
| 1855 | |
| 1856 Statement *e = NULL; | |
| 1857 if (elsebody) | |
| 1858 e = elsebody->syntaxCopy(); | |
| 1859 | |
| 1860 Argument *a = arg ? arg->syntaxCopy() : NULL; | |
| 1861 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); | |
| 1862 return s; | |
| 1863 } | |
| 1864 | |
| 1865 Statement *IfStatement::semantic(Scope *sc) | |
| 1866 { | |
| 1867 condition = condition->semantic(sc); | |
| 1868 condition = resolveProperties(sc, condition); | |
| 1869 condition = condition->checkToBoolean(); | |
| 1870 | |
| 1871 // If we can short-circuit evaluate the if statement, don't do the | |
| 1872 // semantic analysis of the skipped code. | |
| 1873 // This feature allows a limited form of conditional compilation. | |
| 1874 condition = condition->optimize(WANTflags); | |
| 1875 | |
| 1876 // Evaluate at runtime | |
| 1877 unsigned cs0 = sc->callSuper; | |
| 1878 unsigned cs1; | |
| 1879 | |
| 1880 Scope *scd; | |
| 1881 if (arg) | |
| 1882 { /* Declare arg, which we will set to be the | |
| 1883 * result of condition. | |
| 1884 */ | |
| 1885 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1886 sym->parent = sc->scopesym; | |
| 1887 scd = sc->push(sym); | |
| 1888 | |
| 1889 Type *t = arg->type ? arg->type : condition->type; | |
| 1890 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
| 1891 match->noauto = 1; | |
| 1892 match->semantic(scd); | |
| 1893 if (!scd->insert(match)) | |
| 1894 assert(0); | |
| 1895 match->parent = sc->func; | |
| 1896 | |
| 1897 /* Generate: | |
| 1898 * (arg = condition) | |
| 1899 */ | |
| 1900 VarExp *v = new VarExp(0, match); | |
| 1901 condition = new AssignExp(loc, v, condition); | |
| 1902 condition = condition->semantic(scd); | |
| 1903 } | |
| 1904 else | |
| 1905 scd = sc->push(); | |
| 1906 ifbody = ifbody->semantic(scd); | |
| 1907 scd->pop(); | |
| 1908 | |
| 1909 cs1 = sc->callSuper; | |
| 1910 sc->callSuper = cs0; | |
| 1911 if (elsebody) | |
| 1912 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 1913 sc->mergeCallSuper(loc, cs1); | |
| 1914 | |
| 1915 return this; | |
| 1916 } | |
| 1917 | |
| 1918 int IfStatement::usesEH() | |
| 1919 { | |
| 1920 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 1921 } | |
| 1922 | |
| 336 | 1923 int IfStatement::blockExit() |
| 1924 { | |
| 1925 //printf("IfStatement::blockExit(%p)\n", this); | |
| 1926 | |
| 1927 int result = BEnone; | |
| 1928 if (condition->canThrow()) | |
| 1929 result |= BEthrow; | |
| 1930 if (condition->isBool(TRUE)) | |
| 1931 { | |
| 1932 if (ifbody) | |
| 1933 result |= ifbody->blockExit(); | |
| 1934 else | |
| 1935 result |= BEfallthru; | |
| 1936 } | |
| 1937 else if (condition->isBool(FALSE)) | |
| 1938 { | |
| 1939 if (elsebody) | |
| 1940 result |= elsebody->blockExit(); | |
| 1941 else | |
| 1942 result |= BEfallthru; | |
| 1943 } | |
| 1944 else | |
| 1945 { | |
| 1946 if (ifbody) | |
| 1947 result |= ifbody->blockExit(); | |
| 1948 else | |
| 1949 result |= BEfallthru; | |
| 1950 if (elsebody) | |
| 1951 result |= elsebody->blockExit(); | |
| 1952 else | |
| 1953 result |= BEfallthru; | |
| 1954 } | |
| 1955 //printf("IfStatement::blockExit(%p) = x%x\n", this, result); | |
| 1956 return result; | |
| 1957 } | |
| 1958 | |
| 159 | 1959 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 1960 { | |
| 1961 buf->writestring("if ("); | |
| 1962 if (arg) | |
| 1963 { | |
| 1964 if (arg->type) | |
| 1965 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 1966 else | |
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1967 { buf->writestring("auto "); |
| 159 | 1968 buf->writestring(arg->ident->toChars()); |
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1969 } |
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1970 buf->writestring(" = "); |
| 159 | 1971 } |
| 1972 condition->toCBuffer(buf, hgs); | |
| 1973 buf->writebyte(')'); | |
| 1974 buf->writenl(); | |
| 1975 ifbody->toCBuffer(buf, hgs); | |
| 1976 if (elsebody) | |
| 1977 { buf->writestring("else"); | |
| 1978 buf->writenl(); | |
| 1979 elsebody->toCBuffer(buf, hgs); | |
| 1980 } | |
| 1981 } | |
| 1982 | |
| 1983 /******************************** ConditionalStatement ***************************/ | |
| 1984 | |
| 1985 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 1986 : Statement(loc) | |
| 1987 { | |
| 1988 this->condition = condition; | |
| 1989 this->ifbody = ifbody; | |
| 1990 this->elsebody = elsebody; | |
| 1991 } | |
| 1992 | |
| 1993 Statement *ConditionalStatement::syntaxCopy() | |
| 1994 { | |
| 1995 Statement *e = NULL; | |
| 1996 if (elsebody) | |
| 1997 e = elsebody->syntaxCopy(); | |
| 1998 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 1999 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 2000 return s; | |
| 2001 } | |
| 2002 | |
| 2003 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 2004 { | |
| 2005 //printf("ConditionalStatement::semantic()\n"); | |
| 2006 | |
| 2007 // If we can short-circuit evaluate the if statement, don't do the | |
| 2008 // semantic analysis of the skipped code. | |
| 2009 // This feature allows a limited form of conditional compilation. | |
| 2010 if (condition->include(sc, NULL)) | |
| 2011 { | |
| 2012 ifbody = ifbody->semantic(sc); | |
| 2013 return ifbody; | |
| 2014 } | |
| 2015 else | |
| 2016 { | |
| 2017 if (elsebody) | |
| 2018 elsebody = elsebody->semantic(sc); | |
| 2019 return elsebody; | |
| 2020 } | |
| 2021 } | |
| 2022 | |
| 2023 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 2024 { | |
| 2025 Statement *s; | |
| 2026 | |
| 2027 if (condition->include(sc, NULL)) | |
| 2028 s = ifbody; | |
| 2029 else | |
| 2030 s = elsebody; | |
| 2031 | |
| 2032 Statements *a = new Statements(); | |
| 2033 a->push(s); | |
| 2034 return a; | |
| 2035 } | |
| 2036 | |
| 2037 int ConditionalStatement::usesEH() | |
| 2038 { | |
| 2039 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2040 } | |
| 2041 | |
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2042 int ConditionalStatement::blockExit() |
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2043 { |
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2044 int result = ifbody->blockExit(); |
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2045 if (elsebody) |
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2046 result |= elsebody->blockExit(); |
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2047 return result; |
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2048 } |
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2049 |
| 159 | 2050 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2051 { | |
| 2052 condition->toCBuffer(buf, hgs); | |
| 2053 buf->writenl(); | |
| 336 | 2054 buf->writeByte('{'); |
| 2055 buf->writenl(); | |
| 159 | 2056 if (ifbody) |
| 2057 ifbody->toCBuffer(buf, hgs); | |
| 336 | 2058 buf->writeByte('}'); |
| 2059 buf->writenl(); | |
| 159 | 2060 if (elsebody) |
| 2061 { | |
| 2062 buf->writestring("else"); | |
| 2063 buf->writenl(); | |
| 336 | 2064 buf->writeByte('{'); |
| 2065 buf->writenl(); | |
| 159 | 2066 elsebody->toCBuffer(buf, hgs); |
| 336 | 2067 buf->writeByte('}'); |
| 2068 buf->writenl(); | |
| 159 | 2069 } |
| 2070 buf->writenl(); | |
| 2071 } | |
| 2072 | |
| 2073 | |
| 2074 /******************************** PragmaStatement ***************************/ | |
| 2075 | |
| 2076 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 2077 : Statement(loc) | |
| 2078 { | |
| 2079 this->ident = ident; | |
| 2080 this->args = args; | |
| 2081 this->body = body; | |
| 2082 } | |
| 2083 | |
| 2084 Statement *PragmaStatement::syntaxCopy() | |
| 2085 { | |
| 2086 Statement *b = NULL; | |
| 2087 if (body) | |
| 2088 b = body->syntaxCopy(); | |
| 2089 PragmaStatement *s = new PragmaStatement(loc, | |
| 2090 ident, Expression::arraySyntaxCopy(args), b); | |
| 2091 return s; | |
| 2092 } | |
| 2093 | |
| 2094 Statement *PragmaStatement::semantic(Scope *sc) | |
| 2095 { // Should be merged with PragmaDeclaration | |
| 2096 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 2097 //printf("body = %p\n", body); | |
| 2098 if (ident == Id::msg) | |
| 2099 { | |
| 2100 if (args) | |
| 2101 { | |
| 2102 for (size_t i = 0; i < args->dim; i++) | |
| 2103 { | |
| 2104 Expression *e = (Expression *)args->data[i]; | |
| 2105 | |
| 2106 e = e->semantic(sc); | |
| 2107 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2108 if (e->op == TOKstring) | |
| 2109 { | |
| 2110 StringExp *se = (StringExp *)e; | |
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2111 fprintf(stdmsg, "%.*s", (int)se->len, (char*)se->string); |
| 159 | 2112 } |
| 2113 else | |
| 2114 error("string expected for message, not '%s'", e->toChars()); | |
| 2115 } | |
| 2116 fprintf(stdmsg, "\n"); | |
| 2117 } | |
| 2118 } | |
| 2119 else if (ident == Id::lib) | |
| 2120 { | |
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2121 #if 1 |
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2122 /* Should this be allowed? |
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2123 */ |
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2124 error("pragma(lib) not allowed as statement"); |
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2125 #else |
| 159 | 2126 if (!args || args->dim != 1) |
| 2127 error("string expected for library name"); | |
| 2128 else | |
| 2129 { | |
| 2130 Expression *e = (Expression *)args->data[0]; | |
| 2131 | |
| 2132 e = e->semantic(sc); | |
| 2133 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2134 args->data[0] = (void *)e; | |
| 2135 if (e->op != TOKstring) | |
| 2136 error("string expected for library name, not '%s'", e->toChars()); | |
| 2137 else if (global.params.verbose) | |
| 2138 { | |
| 2139 StringExp *se = (StringExp *)e; | |
| 2140 char *name = (char *)mem.malloc(se->len + 1); | |
| 2141 memcpy(name, se->string, se->len); | |
| 2142 name[se->len] = 0; | |
| 2143 printf("library %s\n", name); | |
| 2144 mem.free(name); | |
| 2145 } | |
| 2146 } | |
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2147 #endif |
| 159 | 2148 } |
| 2149 else | |
| 2150 error("unrecognized pragma(%s)", ident->toChars()); | |
| 2151 | |
| 2152 if (body) | |
| 2153 { | |
| 2154 body = body->semantic(sc); | |
| 2155 } | |
| 2156 return body; | |
| 2157 } | |
| 2158 | |
| 2159 int PragmaStatement::usesEH() | |
| 2160 { | |
| 2161 return body && body->usesEH(); | |
| 2162 } | |
| 2163 | |
| 336 | 2164 int PragmaStatement::blockExit() |
| 2165 { | |
| 2166 int result = BEfallthru; | |
| 2167 #if 0 // currently, no code is generated for Pragma's, so it's just fallthru | |
| 2168 if (arrayExpressionCanThrow(args)) | |
| 2169 result |= BEthrow; | |
| 2170 if (body) | |
| 2171 result |= body->blockExit(); | |
| 2172 #endif | |
| 2173 return result; | |
| 2174 } | |
| 2175 | |
| 159 | 2176 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2177 { | |
| 2178 buf->writestring("pragma ("); | |
| 2179 buf->writestring(ident->toChars()); | |
| 2180 if (args && args->dim) | |
| 2181 { | |
| 2182 buf->writestring(", "); | |
| 2183 argsToCBuffer(buf, args, hgs); | |
| 2184 } | |
| 2185 buf->writeByte(')'); | |
| 2186 if (body) | |
| 2187 { | |
| 2188 buf->writenl(); | |
| 2189 buf->writeByte('{'); | |
| 2190 buf->writenl(); | |
| 2191 | |
| 2192 body->toCBuffer(buf, hgs); | |
| 2193 | |
| 2194 buf->writeByte('}'); | |
| 2195 buf->writenl(); | |
| 2196 } | |
| 2197 else | |
| 2198 { | |
| 2199 buf->writeByte(';'); | |
| 2200 buf->writenl(); | |
| 2201 } | |
| 2202 } | |
| 2203 | |
| 2204 | |
| 2205 /******************************** StaticAssertStatement ***************************/ | |
| 2206 | |
| 2207 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 2208 : Statement(sa->loc) | |
| 2209 { | |
| 2210 this->sa = sa; | |
| 2211 } | |
| 2212 | |
| 2213 Statement *StaticAssertStatement::syntaxCopy() | |
| 2214 { | |
| 2215 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 2216 return s; | |
| 2217 } | |
| 2218 | |
| 2219 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 2220 { | |
| 2221 sa->semantic2(sc); | |
| 2222 return NULL; | |
| 2223 } | |
| 2224 | |
| 2225 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2226 { | |
| 2227 sa->toCBuffer(buf, hgs); | |
| 2228 } | |
| 2229 | |
| 2230 | |
| 2231 /******************************** SwitchStatement ***************************/ | |
| 2232 | |
| 2233 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 2234 : Statement(loc) | |
| 2235 { | |
| 2236 condition = c; | |
| 2237 body = b; | |
| 2238 sdefault = NULL; | |
| 2239 cases = NULL; | |
| 2240 hasNoDefault = 0; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
2241 // LDC |
| 309 | 2242 enclosinghandler = NULL; |
| 159 | 2243 } |
| 2244 | |
| 2245 Statement *SwitchStatement::syntaxCopy() | |
| 2246 { | |
| 2247 SwitchStatement *s = new SwitchStatement(loc, | |
| 2248 condition->syntaxCopy(), body->syntaxCopy()); | |
| 2249 return s; | |
| 2250 } | |
| 2251 | |
| 2252 Statement *SwitchStatement::semantic(Scope *sc) | |
| 2253 { | |
| 2254 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 2255 assert(!cases); // ensure semantic() is only run once | |
| 2256 | |
| 309 | 2257 enclosinghandler = sc->tfOfTry; |
| 159 | 2258 |
| 2259 condition = condition->semantic(sc); | |
| 2260 condition = resolveProperties(sc, condition); | |
| 2261 if (condition->type->isString()) | |
| 2262 { | |
| 2263 // If it's not an array, cast it to one | |
| 2264 if (condition->type->ty != Tarray) | |
| 2265 { | |
| 2266 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2267 } | |
| 2268 } | |
| 2269 else | |
| 2270 { condition = condition->integralPromotions(sc); | |
| 2271 condition->checkIntegral(); | |
| 2272 } | |
| 2273 condition = condition->optimize(WANTvalue); | |
| 2274 | |
| 2275 sc = sc->push(); | |
| 2276 sc->sbreak = this; | |
| 2277 sc->sw = this; | |
| 2278 | |
| 2279 cases = new Array(); | |
| 2280 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2281 body = body->semantic(sc); | |
| 2282 sc->noctor--; | |
| 2283 | |
| 2284 // Resolve any goto case's with exp | |
| 2285 for (int i = 0; i < gotoCases.dim; i++) | |
| 2286 { | |
| 2287 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2288 | |
| 2289 if (!gcs->exp) | |
| 2290 { | |
| 2291 gcs->error("no case statement following goto case;"); | |
| 2292 break; | |
| 2293 } | |
| 2294 | |
| 2295 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2296 { | |
| 2297 if (!scx->sw) | |
| 2298 continue; | |
| 2299 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2300 { | |
| 2301 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2302 | |
| 2303 if (cs->exp->equals(gcs->exp)) | |
| 2304 { | |
| 2305 gcs->cs = cs; | |
| 2306 goto Lfoundcase; | |
| 2307 } | |
| 2308 } | |
| 2309 } | |
| 2310 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2311 | |
| 2312 Lfoundcase: | |
| 2313 ; | |
| 2314 } | |
| 2315 | |
| 2316 if (!sc->sw->sdefault) | |
| 2317 { hasNoDefault = 1; | |
| 2318 | |
| 2319 if (global.params.warnings) | |
|
215
a58d8f4b84df
[svn r231] Changed: warnings are no longer treated as an error.
lindquist
parents:
159
diff
changeset
|
2320 { warning("%s: switch statement has no default", loc.toChars()); |
| 159 | 2321 } |
| 2322 | |
| 2323 // Generate runtime error if the default is hit | |
| 2324 Statements *a = new Statements(); | |
| 2325 CompoundStatement *cs; | |
| 2326 Statement *s; | |
| 2327 | |
| 2328 if (global.params.useSwitchError) | |
| 2329 s = new SwitchErrorStatement(loc); | |
| 2330 else | |
| 2331 { Expression *e = new HaltExp(loc); | |
| 2332 s = new ExpStatement(loc, e); | |
| 2333 } | |
| 2334 | |
| 2335 a->reserve(4); | |
| 2336 a->push(body); | |
| 2337 a->push(new BreakStatement(loc, NULL)); | |
| 2338 sc->sw->sdefault = new DefaultStatement(loc, s); | |
| 2339 a->push(sc->sw->sdefault); | |
| 2340 cs = new CompoundStatement(loc, a); | |
| 2341 body = cs; | |
| 2342 } | |
| 2343 | |
| 2344 sc->pop(); | |
| 2345 return this; | |
| 2346 } | |
| 2347 | |
| 2348 int SwitchStatement::hasBreak() | |
| 2349 { | |
| 2350 return TRUE; | |
| 2351 } | |
| 2352 | |
| 2353 int SwitchStatement::usesEH() | |
| 2354 { | |
| 2355 return body ? body->usesEH() : 0; | |
| 2356 } | |
| 2357 | |
| 336 | 2358 int SwitchStatement::blockExit() |
| 2359 { int result = BEnone; | |
| 2360 if (condition->canThrow()) | |
| 2361 result |= BEthrow; | |
| 2362 | |
| 2363 if (body) | |
| 2364 { result |= body->blockExit(); | |
| 2365 if (result & BEbreak) | |
| 2366 { result |= BEfallthru; | |
| 2367 result &= ~BEbreak; | |
| 2368 } | |
| 2369 } | |
| 2370 else | |
| 2371 result |= BEfallthru; | |
| 2372 | |
| 2373 return result; | |
| 2374 } | |
| 2375 | |
| 159 | 2376 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2377 { | |
| 2378 buf->writestring("switch ("); | |
| 2379 condition->toCBuffer(buf, hgs); | |
| 2380 buf->writebyte(')'); | |
| 2381 buf->writenl(); | |
| 2382 if (body) | |
| 2383 { | |
| 2384 if (!body->isScopeStatement()) | |
| 2385 { buf->writebyte('{'); | |
| 2386 buf->writenl(); | |
| 2387 body->toCBuffer(buf, hgs); | |
| 2388 buf->writebyte('}'); | |
| 2389 buf->writenl(); | |
| 2390 } | |
| 2391 else | |
| 2392 { | |
| 2393 body->toCBuffer(buf, hgs); | |
| 2394 } | |
| 2395 } | |
| 2396 } | |
| 2397 | |
| 2398 /******************************** CaseStatement ***************************/ | |
| 2399 | |
| 2400 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2401 : Statement(loc) | |
| 2402 { | |
| 2403 this->exp = exp; | |
| 2404 this->statement = s; | |
| 2405 cblock = NULL; | |
| 2406 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
|
2407 llvmIdx = NULL; |
| 159 | 2408 } |
| 2409 | |
| 2410 Statement *CaseStatement::syntaxCopy() | |
| 2411 { | |
| 2412 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2413 return s; | |
| 2414 } | |
| 2415 | |
| 2416 Statement *CaseStatement::semantic(Scope *sc) | |
| 2417 { SwitchStatement *sw = sc->sw; | |
| 2418 | |
| 2419 //printf("CaseStatement::semantic() %s\n", toChars()); | |
| 2420 exp = exp->semantic(sc); | |
| 2421 if (sw) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2422 { |
| 159 | 2423 exp = exp->implicitCastTo(sc, sw->condition->type); |
| 2424 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2425 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2426 { | |
| 2427 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2428 exp = new IntegerExp(0); | |
| 2429 } | |
| 2430 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2431 for (int i = 0; i < sw->cases->dim; i++) |
| 159 | 2432 { |
| 2433 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2434 | |
| 2435 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2436 if (cs->exp->equals(exp)) | |
| 2437 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2438 break; | |
| 2439 } | |
| 2440 } | |
| 2441 | |
| 2442 sw->cases->push(this); | |
| 2443 | |
| 2444 // Resolve any goto case's with no exp to this case statement | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2445 for (size_t i = 0; i < sw->gotoCases.dim; i++) |
| 159 | 2446 { |
| 2447 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2448 | |
| 2449 if (!gcs->exp) | |
| 2450 { | |
| 2451 gcs->cs = this; | |
| 2452 sw->gotoCases.remove(i); // remove from array | |
| 2453 } | |
| 2454 } | |
| 2455 } | |
| 2456 else | |
| 2457 error("case not in switch statement"); | |
| 2458 statement = statement->semantic(sc); | |
| 2459 return this; | |
| 2460 } | |
| 2461 | |
| 2462 int CaseStatement::compare(Object *obj) | |
| 2463 { | |
| 2464 // Sort cases so we can do an efficient lookup | |
| 2465 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2466 | |
| 2467 return exp->compare(cs2->exp); | |
| 2468 } | |
| 2469 | |
| 2470 int CaseStatement::usesEH() | |
| 2471 { | |
| 2472 return statement->usesEH(); | |
| 2473 } | |
| 2474 | |
| 336 | 2475 int CaseStatement::blockExit() |
| 2476 { | |
| 2477 return statement->blockExit(); | |
| 2478 } | |
| 2479 | |
| 159 | 2480 int CaseStatement::comeFrom() |
| 2481 { | |
| 2482 return TRUE; | |
| 2483 } | |
| 2484 | |
| 2485 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2486 { | |
| 2487 buf->writestring("case "); | |
| 2488 exp->toCBuffer(buf, hgs); | |
| 2489 buf->writebyte(':'); | |
| 2490 buf->writenl(); | |
| 2491 statement->toCBuffer(buf, hgs); | |
| 2492 } | |
| 2493 | |
| 2494 /******************************** DefaultStatement ***************************/ | |
| 2495 | |
| 2496 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 2497 : Statement(loc) | |
| 2498 { | |
| 2499 this->statement = s; | |
| 2500 #if IN_GCC | |
| 2501 + cblock = NULL; | |
| 2502 #endif | |
| 2503 bodyBB = NULL; | |
| 2504 } | |
| 2505 | |
| 2506 Statement *DefaultStatement::syntaxCopy() | |
| 2507 { | |
| 2508 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 2509 return s; | |
| 2510 } | |
| 2511 | |
| 2512 Statement *DefaultStatement::semantic(Scope *sc) | |
| 2513 { | |
| 336 | 2514 //printf("DefaultStatement::semantic()\n"); |
| 159 | 2515 if (sc->sw) |
| 2516 { | |
| 2517 if (sc->sw->sdefault) | |
| 2518 { | |
| 2519 error("switch statement already has a default"); | |
| 2520 } | |
| 2521 sc->sw->sdefault = this; | |
| 2522 } | |
| 2523 else | |
| 2524 error("default not in switch statement"); | |
| 2525 statement = statement->semantic(sc); | |
| 2526 return this; | |
| 2527 } | |
| 2528 | |
| 2529 int DefaultStatement::usesEH() | |
| 2530 { | |
| 2531 return statement->usesEH(); | |
| 2532 } | |
| 2533 | |
| 336 | 2534 int DefaultStatement::blockExit() |
| 2535 { | |
| 2536 return statement->blockExit(); | |
| 2537 } | |
| 2538 | |
| 159 | 2539 int DefaultStatement::comeFrom() |
| 2540 { | |
| 2541 return TRUE; | |
| 2542 } | |
| 2543 | |
| 2544 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2545 { | |
| 2546 buf->writestring("default:\n"); | |
| 2547 statement->toCBuffer(buf, hgs); | |
| 2548 } | |
| 2549 | |
| 2550 /******************************** GotoDefaultStatement ***************************/ | |
| 2551 | |
| 2552 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 2553 : Statement(loc) | |
| 2554 { | |
| 2555 sw = NULL; | |
| 309 | 2556 enclosinghandler = NULL; |
| 159 | 2557 } |
| 2558 | |
| 2559 Statement *GotoDefaultStatement::syntaxCopy() | |
| 2560 { | |
| 2561 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 2562 return s; | |
| 2563 } | |
| 2564 | |
| 2565 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 2566 { | |
| 309 | 2567 enclosinghandler = sc->tfOfTry; |
| 159 | 2568 sw = sc->sw; |
| 2569 if (!sw) | |
| 2570 error("goto default not in switch statement"); | |
| 2571 return this; | |
| 2572 } | |
| 2573 | |
| 336 | 2574 int GotoDefaultStatement::blockExit() |
| 2575 { | |
| 2576 return BEgoto; | |
| 2577 } | |
| 2578 | |
| 159 | 2579 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2580 { | |
| 2581 buf->writestring("goto default;\n"); | |
| 2582 } | |
| 2583 | |
| 2584 /******************************** GotoCaseStatement ***************************/ | |
| 2585 | |
| 2586 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 2587 : Statement(loc) | |
| 2588 { | |
| 2589 cs = NULL; | |
| 2590 this->exp = exp; | |
| 309 | 2591 enclosinghandler = NULL; |
| 159 | 2592 sw = NULL; |
| 2593 } | |
| 2594 | |
| 2595 Statement *GotoCaseStatement::syntaxCopy() | |
| 2596 { | |
| 2597 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 2598 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 2599 return s; | |
| 2600 } | |
| 2601 | |
| 2602 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 2603 { | |
| 309 | 2604 enclosinghandler = sc->tfOfTry; |
| 159 | 2605 if (exp) |
| 2606 exp = exp->semantic(sc); | |
| 2607 | |
| 2608 if (!sc->sw) | |
| 2609 error("goto case not in switch statement"); | |
| 2610 else | |
| 2611 { | |
| 2612 sw = sc->sw; | |
| 2613 sc->sw->gotoCases.push(this); | |
| 2614 if (exp) | |
| 2615 { | |
| 2616 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 2617 exp = exp->optimize(WANTvalue); | |
| 2618 } | |
| 2619 } | |
| 2620 return this; | |
| 2621 } | |
| 2622 | |
| 336 | 2623 int GotoCaseStatement::blockExit() |
| 2624 { | |
| 2625 return BEgoto; | |
| 2626 } | |
| 2627 | |
| 159 | 2628 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2629 { | |
| 2630 buf->writestring("goto case"); | |
| 2631 if (exp) | |
| 2632 { buf->writebyte(' '); | |
| 2633 exp->toCBuffer(buf, hgs); | |
| 2634 } | |
| 2635 buf->writebyte(';'); | |
| 2636 buf->writenl(); | |
| 2637 } | |
| 2638 | |
| 2639 /******************************** SwitchErrorStatement ***************************/ | |
| 2640 | |
| 2641 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 2642 : Statement(loc) | |
| 2643 { | |
| 2644 } | |
| 2645 | |
| 336 | 2646 int SwitchErrorStatement::blockExit() |
| 2647 { | |
| 2648 return BEthrow; | |
| 2649 } | |
| 2650 | |
| 159 | 2651 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2652 { | |
| 2653 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 2654 buf->writenl(); | |
| 2655 } | |
| 2656 | |
| 2657 /******************************** ReturnStatement ***************************/ | |
| 2658 | |
| 2659 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 2660 : Statement(loc) | |
| 2661 { | |
| 2662 this->exp = exp; | |
| 309 | 2663 this->enclosinghandler = NULL; |
| 159 | 2664 } |
| 2665 | |
| 2666 Statement *ReturnStatement::syntaxCopy() | |
| 2667 { | |
| 2668 Expression *e = NULL; | |
| 2669 if (exp) | |
| 2670 e = exp->syntaxCopy(); | |
| 2671 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 2672 return s; | |
| 2673 } | |
| 2674 | |
| 2675 Statement *ReturnStatement::semantic(Scope *sc) | |
| 2676 { | |
| 2677 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 309 | 2678 this->enclosinghandler = sc->tfOfTry; |
| 159 | 2679 |
| 2680 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 2681 Scope *scx = sc; | |
| 2682 int implicit0 = 0; | |
| 2683 | |
| 2684 if (sc->fes) | |
| 2685 { | |
| 2686 // Find scope of function foreach is in | |
| 2687 for (; 1; scx = scx->enclosing) | |
| 2688 { | |
| 2689 assert(scx); | |
| 2690 if (scx->func != fd) | |
| 2691 { fd = scx->func; // fd is now function enclosing foreach | |
| 2692 break; | |
| 2693 } | |
| 2694 } | |
| 2695 } | |
| 2696 | |
| 2697 Type *tret = fd->type->nextOf(); | |
| 2698 if (fd->tintro) | |
| 336 | 2699 /* We'll be implicitly casting the return expression to tintro |
| 2700 */ | |
| 159 | 2701 tret = fd->tintro->nextOf(); |
| 2702 Type *tbret = NULL; | |
| 2703 | |
| 2704 if (tret) | |
| 2705 tbret = tret->toBasetype(); | |
| 2706 | |
| 2707 // main() returns 0, even if it returns void | |
| 2708 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 2709 { implicit0 = 1; | |
| 2710 exp = new IntegerExp(0); | |
| 2711 } | |
| 2712 | |
| 2713 if (sc->incontract || scx->incontract) | |
| 2714 error("return statements cannot be in contracts"); | |
| 2715 if (sc->tf || scx->tf) | |
| 2716 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); | |
| 2717 | |
| 2718 if (fd->isCtorDeclaration()) | |
| 2719 { | |
| 2720 // Constructors implicitly do: | |
| 2721 // return this; | |
| 2722 if (exp && exp->op != TOKthis) | |
| 2723 error("cannot return expression from constructor"); | |
| 2724 exp = new ThisExp(0); | |
| 2725 } | |
| 2726 | |
| 2727 if (!exp) | |
| 2728 fd->nrvo_can = 0; | |
| 2729 | |
| 2730 if (exp) | |
| 2731 { | |
| 2732 fd->hasReturnExp |= 1; | |
| 2733 | |
| 2734 exp = exp->semantic(sc); | |
| 2735 exp = resolveProperties(sc, exp); | |
| 2736 exp = exp->optimize(WANTvalue); | |
| 2737 | |
| 2738 if (fd->nrvo_can && exp->op == TOKvar) | |
| 2739 { VarExp *ve = (VarExp *)exp; | |
| 2740 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 2741 | |
| 2742 if (!v || v->isOut() || v->isRef()) | |
| 2743 fd->nrvo_can = 0; | |
| 2744 else if (fd->nrvo_var == NULL) | |
| 2745 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 2746 fd->nrvo_var = v; | |
| 2747 else | |
| 2748 fd->nrvo_can = 0; | |
| 2749 } | |
| 2750 else if (fd->nrvo_var != v) | |
| 2751 fd->nrvo_can = 0; | |
| 2752 } | |
| 2753 else | |
| 2754 fd->nrvo_can = 0; | |
| 2755 | |
| 2756 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2757 { | |
| 2758 } | |
| 2759 else if (fd->inferRetType) | |
| 2760 { | |
| 2761 if (fd->type->nextOf()) | |
| 2762 { | |
| 2763 if (!exp->type->equals(fd->type->nextOf())) | |
| 2764 error("mismatched function return type inference of %s and %s", | |
| 2765 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 2766 } | |
| 2767 else | |
| 2768 { | |
| 2769 fd->type->next = exp->type; | |
| 2770 fd->type = fd->type->semantic(loc, sc); | |
| 2771 if (!fd->tintro) | |
| 2772 { tret = fd->type->nextOf(); | |
| 2773 tbret = tret->toBasetype(); | |
| 2774 } | |
| 2775 } | |
| 2776 } | |
| 2777 else if (tbret->ty != Tvoid) | |
| 2778 { | |
| 2779 exp = exp->implicitCastTo(sc, tret); | |
| 2780 } | |
| 2781 } | |
| 2782 else if (fd->inferRetType) | |
| 2783 { | |
| 2784 if (fd->type->nextOf()) | |
| 2785 { | |
| 2786 if (fd->type->nextOf()->ty != Tvoid) | |
| 2787 error("mismatched function return type inference of void and %s", | |
| 2788 fd->type->nextOf()->toChars()); | |
| 2789 } | |
| 2790 else | |
| 2791 { | |
| 2792 fd->type->next = Type::tvoid; | |
| 2793 fd->type = fd->type->semantic(loc, sc); | |
| 2794 if (!fd->tintro) | |
| 2795 { tret = Type::tvoid; | |
| 2796 tbret = tret; | |
| 2797 } | |
| 2798 } | |
| 2799 } | |
| 2800 else if (tbret->ty != Tvoid) // if non-void return | |
| 2801 error("return expression expected"); | |
| 2802 | |
| 2803 if (sc->fes) | |
| 2804 { | |
| 2805 Statement *s; | |
| 2806 | |
| 2807 if (exp && !implicit0) | |
| 2808 { | |
| 2809 exp = exp->implicitCastTo(sc, tret); | |
| 2810 } | |
| 2811 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 2812 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 2813 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 2814 exp->op == TOKstring) | |
| 2815 { | |
| 2816 sc->fes->cases.push(this); | |
|
846
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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794
diff
changeset
|
2817 // Construct: return cases.dim+1; |
| 159 | 2818 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 2819 } | |
| 2820 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 2821 { | |
| 2822 s = new ReturnStatement(0, NULL); | |
| 2823 sc->fes->cases.push(s); | |
| 2824 | |
| 2825 // Construct: { exp; return cases.dim + 1; } | |
|
846
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2826 Statement *s1 = new ExpStatement(loc, exp); |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2827 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2828 s = new CompoundStatement(loc, s1, s2); |
| 2829 } | |
| 2830 else | |
| 2831 { | |
| 2832 // Construct: return vresult; | |
| 2833 if (!fd->vresult) | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2834 { // Declare vresult |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2835 VarDeclaration *v = new VarDeclaration(loc, tret, Id::result, NULL); |
| 159 | 2836 v->noauto = 1; |
| 2837 v->semantic(scx); | |
| 2838 if (!scx->insert(v)) | |
| 2839 assert(0); | |
| 2840 v->parent = fd; | |
| 2841 fd->vresult = v; | |
| 2842 } | |
| 2843 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2844 s = new ReturnStatement(0, new VarExp(0, fd->vresult)); |
| 159 | 2845 sc->fes->cases.push(s); |
| 2846 | |
| 2847 // Construct: { vresult = exp; return cases.dim + 1; } | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2848 exp = new AssignExp(loc, new VarExp(0, fd->vresult), exp); |
| 159 | 2849 exp = exp->semantic(sc); |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2850 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2851 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2852 s = new CompoundStatement(loc, s1, s2); |
| 2853 } | |
| 2854 return s; | |
| 2855 } | |
| 2856 | |
| 2857 if (exp) | |
| 2858 { | |
| 2859 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2860 { | |
| 2861 assert(fd->vresult); | |
| 2862 VarExp *v = new VarExp(0, fd->vresult); | |
| 2863 | |
| 2864 exp = new AssignExp(loc, v, exp); | |
| 2865 exp = exp->semantic(sc); | |
| 2866 } | |
| 2867 //exp->dump(0); | |
| 2868 //exp->print(); | |
| 2869 exp->checkEscape(); | |
| 2870 } | |
| 2871 | |
| 2872 /* BUG: need to issue an error on: | |
| 2873 * this | |
| 2874 * { if (x) return; | |
| 2875 * super(); | |
| 2876 * } | |
| 2877 */ | |
| 2878 | |
| 2879 if (sc->callSuper & CSXany_ctor && | |
| 2880 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 2881 error("return without calling constructor"); | |
| 2882 | |
| 2883 sc->callSuper |= CSXreturn; | |
| 2884 | |
| 2885 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 2886 if (fd->returnLabel) | |
| 2887 { | |
| 2888 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 2889 | |
| 2890 gs->label = fd->returnLabel; | |
| 2891 if (exp) | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2892 { /* Replace: return exp; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2893 * with: exp; goto returnLabel; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2894 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2895 Statement *s = new ExpStatement(0, exp); |
| 159 | 2896 return new CompoundStatement(loc, s, gs); |
| 2897 } | |
| 2898 return gs; | |
| 2899 } | |
| 2900 | |
| 2901 if (exp && tbret->ty == Tvoid && !fd->isMain()) | |
| 336 | 2902 { |
| 2903 /* Replace: | |
| 2904 * return exp; | |
| 2905 * with: | |
| 2906 * exp; return; | |
| 2907 */ | |
| 2908 Statement *s = new ExpStatement(loc, exp); | |
| 159 | 2909 loc = 0; |
| 2910 exp = NULL; | |
| 2911 return new CompoundStatement(loc, s, this); | |
| 2912 } | |
| 2913 | |
| 2914 return this; | |
| 2915 } | |
| 2916 | |
| 336 | 2917 int ReturnStatement::blockExit() |
| 2918 { int result = BEreturn; | |
| 2919 | |
| 2920 if (exp && exp->canThrow()) | |
| 2921 result |= BEthrow; | |
| 2922 return result; | |
| 2923 } | |
| 2924 | |
| 159 | 2925 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2926 { | |
| 2927 buf->printf("return "); | |
| 2928 if (exp) | |
| 2929 exp->toCBuffer(buf, hgs); | |
| 2930 buf->writeByte(';'); | |
| 2931 buf->writenl(); | |
| 2932 } | |
| 2933 | |
| 2934 /******************************** BreakStatement ***************************/ | |
| 2935 | |
| 2936 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 2937 : Statement(loc) | |
| 2938 { | |
| 2939 this->ident = ident; | |
| 309 | 2940 this->enclosinghandler = NULL; |
| 159 | 2941 } |
| 2942 | |
| 2943 Statement *BreakStatement::syntaxCopy() | |
| 2944 { | |
| 2945 BreakStatement *s = new BreakStatement(loc, ident); | |
| 2946 return s; | |
| 2947 } | |
| 2948 | |
| 2949 Statement *BreakStatement::semantic(Scope *sc) | |
| 2950 { | |
| 336 | 2951 //printf("BreakStatement::semantic()\n"); |
| 309 | 2952 enclosinghandler = sc->tfOfTry; |
| 159 | 2953 // If: |
| 2954 // break Identifier; | |
| 2955 if (ident) | |
| 2956 { | |
| 2957 Scope *scx; | |
| 2958 FuncDeclaration *thisfunc = sc->func; | |
| 2959 | |
| 2960 for (scx = sc; scx; scx = scx->enclosing) | |
| 2961 { | |
| 2962 LabelStatement *ls; | |
| 2963 | |
| 2964 if (scx->func != thisfunc) // if in enclosing function | |
| 2965 { | |
| 2966 if (sc->fes) // if this is the body of a foreach | |
| 2967 { | |
| 2968 /* Post this statement to the fes, and replace | |
| 2969 * it with a return value that caller will put into | |
| 2970 * a switch. Caller will figure out where the break | |
| 2971 * label actually is. | |
| 2972 * Case numbers start with 2, not 0, as 0 is continue | |
| 2973 * and 1 is break. | |
| 2974 */ | |
| 2975 Statement *s; | |
| 2976 sc->fes->cases.push(this); | |
| 2977 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2978 return s; | |
| 2979 } | |
| 2980 break; // can't break to it | |
| 2981 } | |
| 2982 | |
| 2983 ls = scx->slabel; | |
| 2984 if (ls && ls->ident == ident) | |
| 2985 { | |
| 2986 Statement *s = ls->statement; | |
| 2987 | |
| 2988 if (!s->hasBreak()) | |
| 2989 error("label '%s' has no break", ident->toChars()); | |
| 2990 if (ls->tf != sc->tf) | |
| 2991 error("cannot break out of finally block"); | |
| 2992 | |
| 2993 this->target = ls; | |
| 2994 return this; | |
| 2995 } | |
| 2996 } | |
| 2997 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 2998 } | |
| 2999 else if (!sc->sbreak) | |
| 3000 { | |
| 3001 if (sc->fes) | |
| 3002 { Statement *s; | |
| 3003 | |
| 3004 // Replace break; with return 1; | |
| 3005 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 3006 return s; | |
| 3007 } | |
| 3008 error("break is not inside a loop or switch"); | |
| 3009 } | |
| 3010 return this; | |
| 3011 } | |
| 3012 | |
| 336 | 3013 int BreakStatement::blockExit() |
| 3014 { | |
| 3015 //printf("BreakStatement::blockExit(%p) = x%x\n", this, ident ? BEgoto : BEbreak); | |
| 3016 return ident ? BEgoto : BEbreak; | |
| 3017 } | |
| 3018 | |
| 159 | 3019 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3020 { | |
| 3021 buf->writestring("break"); | |
| 3022 if (ident) | |
| 3023 { buf->writebyte(' '); | |
| 3024 buf->writestring(ident->toChars()); | |
| 3025 } | |
| 3026 buf->writebyte(';'); | |
| 3027 buf->writenl(); | |
| 3028 } | |
| 3029 | |
| 3030 /******************************** ContinueStatement ***************************/ | |
| 3031 | |
| 3032 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 3033 : Statement(loc) | |
| 3034 { | |
| 3035 this->ident = ident; | |
| 309 | 3036 this->enclosinghandler = NULL; |
| 159 | 3037 } |
| 3038 | |
| 3039 Statement *ContinueStatement::syntaxCopy() | |
| 3040 { | |
| 3041 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 3042 return s; | |
| 3043 } | |
| 3044 | |
| 3045 Statement *ContinueStatement::semantic(Scope *sc) | |
| 3046 { | |
| 309 | 3047 enclosinghandler = sc->tfOfTry; |
| 159 | 3048 //printf("ContinueStatement::semantic() %p\n", this); |
| 3049 if (ident) | |
| 3050 { | |
| 3051 Scope *scx; | |
| 3052 FuncDeclaration *thisfunc = sc->func; | |
| 3053 | |
| 3054 for (scx = sc; scx; scx = scx->enclosing) | |
| 3055 { | |
| 3056 LabelStatement *ls; | |
| 3057 | |
| 3058 if (scx->func != thisfunc) // if in enclosing function | |
| 3059 { | |
| 3060 if (sc->fes) // if this is the body of a foreach | |
| 3061 { | |
| 3062 for (; scx; scx = scx->enclosing) | |
| 3063 { | |
| 3064 ls = scx->slabel; | |
| 3065 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 3066 { | |
| 3067 // Replace continue ident; with return 0; | |
| 3068 return new ReturnStatement(0, new IntegerExp(0)); | |
| 3069 } | |
| 3070 } | |
| 3071 | |
| 3072 /* Post this statement to the fes, and replace | |
| 3073 * it with a return value that caller will put into | |
| 3074 * a switch. Caller will figure out where the break | |
| 3075 * label actually is. | |
| 3076 * Case numbers start with 2, not 0, as 0 is continue | |
| 3077 * and 1 is break. | |
| 3078 */ | |
| 3079 Statement *s; | |
| 3080 sc->fes->cases.push(this); | |
| 3081 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3082 return s; | |
| 3083 } | |
| 3084 break; // can't continue to it | |
| 3085 } | |
| 3086 | |
| 3087 ls = scx->slabel; | |
| 3088 if (ls && ls->ident == ident) | |
| 3089 { | |
| 3090 Statement *s = ls->statement; | |
| 3091 | |
| 3092 if (!s->hasContinue()) | |
| 3093 error("label '%s' has no continue", ident->toChars()); | |
| 3094 if (ls->tf != sc->tf) | |
| 3095 error("cannot continue out of finally block"); | |
| 3096 | |
| 3097 this->target = ls; | |
| 3098 return this; | |
| 3099 } | |
| 3100 } | |
| 3101 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 3102 } | |
| 3103 else if (!sc->scontinue) | |
| 3104 { | |
| 3105 if (sc->fes) | |
| 3106 { Statement *s; | |
| 3107 | |
| 3108 // Replace continue; with return 0; | |
| 3109 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 3110 return s; | |
| 3111 } | |
| 3112 error("continue is not inside a loop"); | |
| 3113 } | |
| 3114 return this; | |
| 3115 } | |
| 3116 | |
| 336 | 3117 int ContinueStatement::blockExit() |
| 3118 { | |
| 3119 return ident ? BEgoto : BEcontinue; | |
| 3120 } | |
| 3121 | |
| 159 | 3122 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3123 { | |
| 3124 buf->writestring("continue"); | |
| 3125 if (ident) | |
| 3126 { buf->writebyte(' '); | |
| 3127 buf->writestring(ident->toChars()); | |
| 3128 } | |
| 3129 buf->writebyte(';'); | |
| 3130 buf->writenl(); | |
| 3131 } | |
| 3132 | |
| 3133 /******************************** SynchronizedStatement ***************************/ | |
| 3134 | |
| 3135 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 3136 : Statement(loc) | |
| 3137 { | |
| 3138 this->exp = exp; | |
| 3139 this->body = body; | |
| 3140 this->esync = NULL; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
3141 this->enclosinghandler = NULL; |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3142 // LDC |
| 309 | 3143 this->llsync = NULL; |
| 159 | 3144 } |
| 3145 | |
| 3146 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 3147 : Statement(loc) | |
| 3148 { | |
| 3149 this->exp = NULL; | |
| 3150 this->body = body; | |
| 3151 this->esync = esync; | |
|
310
d20cf0dec9c1
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lindquist
parents:
309
diff
changeset
|
3152 this->enclosinghandler = NULL; |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3153 // LDC |
| 309 | 3154 this->llsync = NULL; |
| 159 | 3155 } |
| 3156 | |
| 3157 Statement *SynchronizedStatement::syntaxCopy() | |
| 3158 { | |
| 3159 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3160 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 3161 return s; | |
| 3162 } | |
| 3163 | |
| 3164 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 3165 { | |
| 3166 if (exp) | |
| 3167 { ClassDeclaration *cd; | |
| 3168 | |
| 3169 exp = exp->semantic(sc); | |
| 3170 exp = resolveProperties(sc, exp); | |
| 3171 cd = exp->type->isClassHandle(); | |
| 3172 if (!cd) | |
| 3173 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 3174 else if (cd->isInterfaceDeclaration()) | |
| 3175 { Type *t = new TypeIdentifier(0, Id::Object); | |
| 3176 | |
| 3177 t = t->semantic(0, sc); | |
| 3178 exp = new CastExp(loc, exp, t); | |
| 3179 exp = exp->semantic(sc); | |
| 3180 } | |
| 3181 } | |
| 3182 if (body) | |
| 309 | 3183 { |
| 3184 enclosinghandler = sc->tfOfTry; | |
| 3185 sc->tfOfTry = new EnclosingSynchro(this); | |
| 3186 body = body->semantic(sc); | |
| 3187 sc->tfOfTry = enclosinghandler; | |
| 3188 } | |
| 159 | 3189 return this; |
| 3190 } | |
| 3191 | |
| 3192 int SynchronizedStatement::hasBreak() | |
| 3193 { | |
| 3194 return FALSE; //TRUE; | |
| 3195 } | |
| 3196 | |
| 3197 int SynchronizedStatement::hasContinue() | |
| 3198 { | |
| 3199 return FALSE; //TRUE; | |
| 3200 } | |
| 3201 | |
| 3202 int SynchronizedStatement::usesEH() | |
| 3203 { | |
| 3204 return TRUE; | |
| 3205 } | |
| 3206 | |
| 336 | 3207 int SynchronizedStatement::blockExit() |
| 3208 { | |
| 3209 return body ? body->blockExit() : BEfallthru; | |
| 3210 } | |
| 3211 | |
| 159 | 3212 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3213 { | |
| 3214 buf->writestring("synchronized"); | |
| 3215 if (exp) | |
| 3216 { buf->writebyte('('); | |
| 3217 exp->toCBuffer(buf, hgs); | |
| 3218 buf->writebyte(')'); | |
| 3219 } | |
| 3220 if (body) | |
| 3221 { | |
| 3222 buf->writebyte(' '); | |
| 3223 body->toCBuffer(buf, hgs); | |
| 3224 } | |
| 3225 } | |
| 3226 | |
| 3227 /******************************** WithStatement ***************************/ | |
| 3228 | |
| 3229 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 3230 : Statement(loc) | |
| 3231 { | |
| 3232 this->exp = exp; | |
| 3233 this->body = body; | |
| 3234 wthis = NULL; | |
| 3235 } | |
| 3236 | |
| 3237 Statement *WithStatement::syntaxCopy() | |
| 3238 { | |
| 3239 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 3240 return s; | |
| 3241 } | |
| 3242 | |
| 3243 Statement *WithStatement::semantic(Scope *sc) | |
| 3244 { ScopeDsymbol *sym; | |
| 3245 Initializer *init; | |
| 3246 | |
| 3247 //printf("WithStatement::semantic()\n"); | |
| 3248 exp = exp->semantic(sc); | |
| 3249 exp = resolveProperties(sc, exp); | |
| 3250 if (exp->op == TOKimport) | |
| 3251 { ScopeExp *es = (ScopeExp *)exp; | |
| 3252 | |
| 3253 sym = es->sds; | |
| 3254 } | |
| 3255 else if (exp->op == TOKtype) | |
| 3256 { TypeExp *es = (TypeExp *)exp; | |
| 3257 | |
| 3258 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 3259 if (!sym) | |
| 3260 { error("%s has no members", es->toChars()); | |
| 3261 body = body->semantic(sc); | |
| 3262 return this; | |
| 3263 } | |
| 3264 } | |
| 3265 else | |
| 3266 { Type *t = exp->type; | |
| 3267 | |
| 3268 assert(t); | |
| 3269 t = t->toBasetype(); | |
| 3270 if (t->isClassHandle()) | |
| 3271 { | |
| 3272 init = new ExpInitializer(loc, exp); | |
| 3273 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3274 wthis->semantic(sc); | |
| 3275 | |
| 3276 sym = new WithScopeSymbol(this); | |
| 3277 sym->parent = sc->scopesym; | |
| 3278 } | |
| 3279 else if (t->ty == Tstruct) | |
| 3280 { | |
| 3281 Expression *e = exp->addressOf(sc); | |
| 3282 init = new ExpInitializer(loc, e); | |
| 3283 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3284 wthis->semantic(sc); | |
| 3285 sym = new WithScopeSymbol(this); | |
| 3286 sym->parent = sc->scopesym; | |
| 3287 } | |
| 3288 else | |
| 3289 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3290 return NULL; | |
| 3291 } | |
| 3292 } | |
| 3293 sc = sc->push(sym); | |
| 3294 | |
| 3295 if (body) | |
| 3296 body = body->semantic(sc); | |
| 3297 | |
| 3298 sc->pop(); | |
| 3299 | |
| 3300 return this; | |
| 3301 } | |
| 3302 | |
| 3303 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3304 { | |
| 3305 buf->writestring("with ("); | |
| 3306 exp->toCBuffer(buf, hgs); | |
| 3307 buf->writestring(")\n"); | |
| 3308 if (body) | |
| 3309 body->toCBuffer(buf, hgs); | |
| 3310 } | |
| 3311 | |
| 3312 int WithStatement::usesEH() | |
| 3313 { | |
| 3314 return body ? body->usesEH() : 0; | |
| 3315 } | |
| 3316 | |
| 336 | 3317 int WithStatement::blockExit() |
| 3318 { | |
| 3319 int result = BEnone; | |
| 3320 if (exp->canThrow()) | |
| 3321 result = BEthrow; | |
| 3322 if (body) | |
| 3323 result |= body->blockExit(); | |
| 3324 else | |
| 3325 result |= BEfallthru; | |
| 3326 return result; | |
| 3327 } | |
| 3328 | |
| 159 | 3329 /******************************** TryCatchStatement ***************************/ |
| 3330 | |
| 3331 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3332 : Statement(loc) | |
| 3333 { | |
| 3334 this->body = body; | |
| 3335 this->catches = catches; | |
| 3336 } | |
| 3337 | |
| 3338 Statement *TryCatchStatement::syntaxCopy() | |
| 3339 { | |
| 3340 Array *a = new Array(); | |
| 3341 a->setDim(catches->dim); | |
| 3342 for (int i = 0; i < a->dim; i++) | |
| 3343 { Catch *c; | |
| 3344 | |
| 3345 c = (Catch *)catches->data[i]; | |
| 3346 c = c->syntaxCopy(); | |
| 3347 a->data[i] = c; | |
| 3348 } | |
| 3349 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3350 return s; | |
| 3351 } | |
| 3352 | |
| 3353 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3354 { | |
| 3355 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3356 | |
| 336 | 3357 /* Even if body is NULL, still do semantic analysis on catches |
| 3358 */ | |
| 3359 for (size_t i = 0; i < catches->dim; i++) | |
| 3360 { Catch *c = (Catch *)catches->data[i]; | |
| 159 | 3361 c->semantic(sc); |
| 3362 | |
| 3363 // Determine if current catch 'hides' any previous catches | |
| 336 | 3364 for (size_t j = 0; j < i; j++) |
| 159 | 3365 { Catch *cj = (Catch *)catches->data[j]; |
| 3366 char *si = c->loc.toChars(); | |
| 3367 char *sj = cj->loc.toChars(); | |
| 3368 | |
| 3369 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3370 error("catch at %s hides catch at %s", sj, si); | |
| 3371 } | |
| 3372 } | |
| 3373 return this; | |
| 3374 } | |
| 3375 | |
| 3376 int TryCatchStatement::hasBreak() | |
| 3377 { | |
| 3378 return FALSE; //TRUE; | |
| 3379 } | |
| 3380 | |
| 3381 int TryCatchStatement::usesEH() | |
| 3382 { | |
| 3383 return TRUE; | |
| 3384 } | |
| 3385 | |
| 336 | 3386 int TryCatchStatement::blockExit() |
| 3387 { int result; | |
| 3388 | |
| 3389 assert(body); | |
| 3390 result = body->blockExit(); | |
| 3391 | |
| 3392 for (size_t i = 0; i < catches->dim; i++) | |
| 3393 { | |
| 3394 Catch *c = (Catch *)catches->data[i]; | |
| 3395 result |= c->blockExit(); | |
| 3396 } | |
| 3397 return result; | |
| 3398 } | |
| 3399 | |
| 159 | 3400 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3401 { | |
| 3402 buf->writestring("try"); | |
| 3403 buf->writenl(); | |
| 3404 if (body) | |
| 3405 body->toCBuffer(buf, hgs); | |
| 336 | 3406 for (size_t i = 0; i < catches->dim; i++) |
| 159 | 3407 { |
| 3408 Catch *c = (Catch *)catches->data[i]; | |
| 3409 c->toCBuffer(buf, hgs); | |
| 3410 } | |
| 3411 } | |
| 3412 | |
| 3413 /******************************** Catch ***************************/ | |
| 3414 | |
| 3415 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 3416 { | |
| 3417 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 3418 this->loc = loc; | |
| 3419 this->type = t; | |
| 3420 this->ident = id; | |
| 3421 this->handler = handler; | |
| 3422 var = NULL; | |
| 3423 } | |
| 3424 | |
| 3425 Catch *Catch::syntaxCopy() | |
| 3426 { | |
| 3427 Catch *c = new Catch(loc, | |
| 3428 (type ? type->syntaxCopy() : NULL), | |
| 3429 ident, | |
| 3430 (handler ? handler->syntaxCopy() : NULL)); | |
| 3431 return c; | |
| 3432 } | |
| 3433 | |
| 3434 void Catch::semantic(Scope *sc) | |
| 3435 { ScopeDsymbol *sym; | |
| 3436 | |
| 3437 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 3438 | |
| 3439 #ifndef IN_GCC | |
| 3440 if (sc->tf) | |
| 3441 { | |
| 3442 /* This is because the _d_local_unwind() gets the stack munged | |
| 3443 * up on this. The workaround is to place any try-catches into | |
| 3444 * a separate function, and call that. | |
| 3445 * To fix, have the compiler automatically convert the finally | |
| 3446 * body into a nested function. | |
| 3447 */ | |
| 3448 error(loc, "cannot put catch statement inside finally block"); | |
| 3449 } | |
| 3450 #endif | |
| 3451 | |
| 3452 sym = new ScopeDsymbol(); | |
| 3453 sym->parent = sc->scopesym; | |
| 3454 sc = sc->push(sym); | |
| 3455 | |
| 3456 if (!type) | |
| 3457 type = new TypeIdentifier(0, Id::Object); | |
| 3458 type = type->semantic(loc, sc); | |
| 3459 if (!type->toBasetype()->isClassHandle()) | |
| 3460 error("can only catch class objects, not '%s'", type->toChars()); | |
| 3461 else if (ident) | |
| 3462 { | |
| 3463 var = new VarDeclaration(loc, type, ident, NULL); | |
| 3464 var->parent = sc->parent; | |
| 3465 sc->insert(var); | |
| 3466 } | |
| 3467 handler = handler->semantic(sc); | |
| 3468 | |
| 3469 sc->pop(); | |
| 3470 } | |
| 3471 | |
| 336 | 3472 int Catch::blockExit() |
| 3473 { | |
| 3474 return handler ? handler->blockExit() : BEfallthru; | |
| 3475 } | |
| 3476 | |
| 159 | 3477 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3478 { | |
| 3479 buf->writestring("catch"); | |
| 3480 if (type) | |
| 3481 { buf->writebyte('('); | |
| 3482 type->toCBuffer(buf, ident, hgs); | |
| 3483 buf->writebyte(')'); | |
| 3484 } | |
| 3485 buf->writenl(); | |
| 3486 buf->writebyte('{'); | |
| 3487 buf->writenl(); | |
| 336 | 3488 if (handler) |
| 3489 handler->toCBuffer(buf, hgs); | |
| 159 | 3490 buf->writebyte('}'); |
| 3491 buf->writenl(); | |
| 3492 } | |
| 3493 | |
| 3494 /****************************** TryFinallyStatement ***************************/ | |
| 3495 | |
| 3496 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 3497 : Statement(loc) | |
| 3498 { | |
| 3499 this->body = body; | |
| 3500 this->finalbody = finalbody; | |
| 309 | 3501 this->enclosinghandler = NULL; |
| 159 | 3502 } |
| 3503 | |
| 3504 Statement *TryFinallyStatement::syntaxCopy() | |
| 3505 { | |
| 3506 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 3507 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 3508 return s; | |
| 3509 } | |
| 3510 | |
| 3511 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 3512 { | |
| 3513 //printf("TryFinallyStatement::semantic()\n"); | |
| 3514 | |
| 309 | 3515 enclosinghandler = sc->tfOfTry; |
| 3516 sc->tfOfTry = new EnclosingTryFinally(this); | |
| 159 | 3517 body = body->semantic(sc); |
| 309 | 3518 sc->tfOfTry = enclosinghandler; |
| 159 | 3519 |
| 3520 sc = sc->push(); | |
| 3521 sc->tf = this; | |
| 3522 sc->sbreak = NULL; | |
| 3523 sc->scontinue = NULL; // no break or continue out of finally block | |
| 3524 finalbody = finalbody->semantic(sc); | |
| 3525 sc->pop(); | |
| 3526 return this; | |
| 3527 } | |
| 3528 | |
| 3529 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3530 { | |
| 3531 buf->printf("try\n{\n"); | |
| 3532 body->toCBuffer(buf, hgs); | |
| 3533 buf->printf("}\nfinally\n{\n"); | |
| 3534 finalbody->toCBuffer(buf, hgs); | |
| 3535 buf->writeByte('}'); | |
| 3536 buf->writenl(); | |
| 3537 } | |
| 3538 | |
| 3539 int TryFinallyStatement::hasBreak() | |
| 3540 { | |
| 3541 return FALSE; //TRUE; | |
| 3542 } | |
| 3543 | |
| 3544 int TryFinallyStatement::hasContinue() | |
| 3545 { | |
| 3546 return FALSE; //TRUE; | |
| 3547 } | |
| 3548 | |
| 3549 int TryFinallyStatement::usesEH() | |
| 3550 { | |
| 3551 return TRUE; | |
| 3552 } | |
| 3553 | |
| 336 | 3554 int TryFinallyStatement::blockExit() |
| 3555 { | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
846
diff
changeset
|
3556 if (body) |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
846
diff
changeset
|
3557 return body->blockExit(); |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
846
diff
changeset
|
3558 return BEfallthru; |
| 336 | 3559 } |
| 3560 | |
| 159 | 3561 |
| 3562 /****************************** OnScopeStatement ***************************/ | |
| 3563 | |
| 3564 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 3565 : Statement(loc) | |
| 3566 { | |
| 3567 this->tok = tok; | |
| 3568 this->statement = statement; | |
| 3569 } | |
| 3570 | |
| 3571 Statement *OnScopeStatement::syntaxCopy() | |
| 3572 { | |
| 3573 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 3574 tok, statement->syntaxCopy()); | |
| 3575 return s; | |
| 3576 } | |
| 3577 | |
| 3578 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 3579 { | |
| 3580 /* semantic is called on results of scopeCode() */ | |
| 3581 return this; | |
| 3582 } | |
| 3583 | |
| 336 | 3584 int OnScopeStatement::blockExit() |
| 3585 { // At this point, this statement is just an empty placeholder | |
| 3586 return BEfallthru; | |
| 3587 } | |
| 3588 | |
| 159 | 3589 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3590 { | |
| 3591 buf->writestring(Token::toChars(tok)); | |
| 3592 buf->writebyte(' '); | |
| 3593 statement->toCBuffer(buf, hgs); | |
| 3594 } | |
| 3595 | |
| 3596 int OnScopeStatement::usesEH() | |
| 3597 { | |
| 3598 return (tok != TOKon_scope_success); | |
| 3599 } | |
| 3600 | |
| 3601 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 3602 { | |
| 3603 //printf("OnScopeStatement::scopeCode()\n"); | |
| 3604 //print(); | |
| 3605 *sentry = NULL; | |
| 3606 *sexception = NULL; | |
| 3607 *sfinally = NULL; | |
| 3608 switch (tok) | |
| 3609 { | |
| 3610 case TOKon_scope_exit: | |
| 3611 *sfinally = statement; | |
| 3612 break; | |
| 3613 | |
| 3614 case TOKon_scope_failure: | |
| 3615 *sexception = statement; | |
| 3616 break; | |
| 3617 | |
| 3618 case TOKon_scope_success: | |
| 3619 { | |
| 3620 /* Create: | |
| 3621 * sentry: int x = 0; | |
| 3622 * sexception: x = 1; | |
| 3623 * sfinally: if (!x) statement; | |
| 3624 */ | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3625 Identifier *id = Lexer::uniqueId("__os"); |
| 159 | 3626 |
| 3627 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 3628 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 3629 *sentry = new DeclarationStatement(loc, v); | |
| 3630 | |
| 3631 Expression *e = new IntegerExp(1); | |
| 3632 e = new AssignExp(0, new VarExp(0, v), e); | |
| 3633 *sexception = new ExpStatement(0, e); | |
| 3634 | |
| 3635 e = new VarExp(0, v); | |
| 3636 e = new NotExp(0, e); | |
| 3637 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 3638 | |
| 3639 break; | |
| 3640 } | |
| 3641 | |
| 3642 default: | |
| 3643 assert(0); | |
| 3644 } | |
| 3645 } | |
| 3646 | |
| 3647 /******************************** ThrowStatement ***************************/ | |
| 3648 | |
| 3649 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 3650 : Statement(loc) | |
| 3651 { | |
| 3652 this->exp = exp; | |
| 3653 } | |
| 3654 | |
| 3655 Statement *ThrowStatement::syntaxCopy() | |
| 3656 { | |
| 3657 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 3658 return s; | |
| 3659 } | |
| 3660 | |
| 3661 Statement *ThrowStatement::semantic(Scope *sc) | |
| 3662 { | |
| 3663 //printf("ThrowStatement::semantic()\n"); | |
| 3664 | |
| 3665 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3666 fd->hasReturnExp |= 2; | |
| 3667 | |
| 3668 if (sc->incontract) | |
| 3669 error("Throw statements cannot be in contracts"); | |
| 3670 exp = exp->semantic(sc); | |
| 3671 exp = resolveProperties(sc, exp); | |
| 3672 if (!exp->type->toBasetype()->isClassHandle()) | |
| 3673 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 3674 return this; | |
| 3675 } | |
| 3676 | |
| 336 | 3677 int ThrowStatement::blockExit() |
| 3678 { | |
| 3679 return BEthrow; // obviously | |
| 3680 } | |
| 3681 | |
| 159 | 3682 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3683 { | |
| 3684 buf->printf("throw "); | |
| 3685 exp->toCBuffer(buf, hgs); | |
| 3686 buf->writeByte(';'); | |
| 3687 buf->writenl(); | |
| 3688 } | |
| 3689 | |
| 3690 /******************************** VolatileStatement **************************/ | |
| 3691 | |
| 3692 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 3693 : Statement(loc) | |
| 3694 { | |
| 3695 this->statement = statement; | |
| 309 | 3696 this->enclosinghandler = NULL; |
| 159 | 3697 } |
| 3698 | |
| 3699 Statement *VolatileStatement::syntaxCopy() | |
| 3700 { | |
| 3701 VolatileStatement *s = new VolatileStatement(loc, | |
| 3702 statement ? statement->syntaxCopy() : NULL); | |
| 3703 return s; | |
| 3704 } | |
| 3705 | |
| 3706 Statement *VolatileStatement::semantic(Scope *sc) | |
| 3707 { | |
| 309 | 3708 if (statement) |
| 3709 { | |
| 3710 enclosinghandler = sc->tfOfTry; | |
| 3711 sc->tfOfTry = new EnclosingVolatile(this); | |
| 3712 statement = statement->semantic(sc); | |
| 3713 sc->tfOfTry = enclosinghandler; | |
| 3714 } | |
| 159 | 3715 return this; |
| 3716 } | |
| 3717 | |
| 3718 Statements *VolatileStatement::flatten(Scope *sc) | |
| 3719 { | |
| 3720 Statements *a; | |
| 3721 | |
| 3722 a = statement ? statement->flatten(sc) : NULL; | |
| 3723 if (a) | |
| 3724 { for (int i = 0; i < a->dim; i++) | |
| 3725 { Statement *s = (Statement *)a->data[i]; | |
| 3726 | |
| 3727 s = new VolatileStatement(loc, s); | |
| 3728 a->data[i] = s; | |
| 3729 } | |
| 3730 } | |
| 3731 | |
| 3732 return a; | |
| 3733 } | |
| 3734 | |
| 336 | 3735 int VolatileStatement::blockExit() |
| 3736 { | |
| 3737 return statement ? statement->blockExit() : BEfallthru; | |
| 3738 } | |
| 3739 | |
| 159 | 3740 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3741 { | |
| 3742 buf->writestring("volatile"); | |
| 3743 if (statement) | |
| 3744 { if (statement->isScopeStatement()) | |
| 3745 buf->writenl(); | |
| 3746 else | |
| 3747 buf->writebyte(' '); | |
| 3748 statement->toCBuffer(buf, hgs); | |
| 3749 } | |
| 3750 } | |
| 3751 | |
| 3752 | |
| 3753 /******************************** GotoStatement ***************************/ | |
| 3754 | |
| 3755 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 3756 : Statement(loc) | |
| 3757 { | |
| 3758 this->ident = ident; | |
| 3759 this->label = NULL; | |
| 3760 this->tf = NULL; | |
| 309 | 3761 this->enclosinghandler = NULL; |
| 159 | 3762 } |
| 3763 | |
| 3764 Statement *GotoStatement::syntaxCopy() | |
| 3765 { | |
| 3766 GotoStatement *s = new GotoStatement(loc, ident); | |
| 3767 return s; | |
| 3768 } | |
| 3769 | |
| 3770 Statement *GotoStatement::semantic(Scope *sc) | |
| 3771 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3772 | |
| 3773 //printf("GotoStatement::semantic()\n"); | |
| 3774 tf = sc->tf; | |
| 309 | 3775 enclosinghandler = sc->tfOfTry; |
| 159 | 3776 label = fd->searchLabel(ident); |
| 3777 if (!label->statement && sc->fes) | |
| 3778 { | |
| 3779 /* Either the goto label is forward referenced or it | |
| 3780 * is in the function that the enclosing foreach is in. | |
| 3781 * Can't know yet, so wrap the goto in a compound statement | |
| 3782 * so we can patch it later, and add it to a 'look at this later' | |
| 3783 * list. | |
| 3784 */ | |
| 3785 Statements *a = new Statements(); | |
| 3786 Statement *s; | |
| 3787 | |
| 3788 a->push(this); | |
| 3789 s = new CompoundStatement(loc, a); | |
| 3790 sc->fes->gotos.push(s); // 'look at this later' list | |
| 3791 return s; | |
| 3792 } | |
| 3793 if (label->statement && label->statement->tf != sc->tf) | |
| 3794 error("cannot goto in or out of finally block"); | |
| 3795 return this; | |
| 3796 } | |
| 3797 | |
| 336 | 3798 int GotoStatement::blockExit() |
| 3799 { | |
| 3800 //printf("GotoStatement::blockExit(%p)\n", this); | |
| 3801 return BEgoto; | |
| 3802 } | |
| 3803 | |
| 159 | 3804 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3805 { | |
| 3806 buf->writestring("goto "); | |
| 3807 buf->writestring(ident->toChars()); | |
| 3808 buf->writebyte(';'); | |
| 3809 buf->writenl(); | |
| 3810 } | |
| 3811 | |
| 3812 /******************************** LabelStatement ***************************/ | |
| 3813 | |
| 3814 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 3815 : Statement(loc) | |
| 3816 { | |
| 3817 this->ident = ident; | |
| 3818 this->statement = statement; | |
| 3819 this->tf = NULL; | |
| 309 | 3820 this->enclosinghandler = NULL; |
| 159 | 3821 this->lblock = NULL; |
| 3822 this->isReturnLabel = 0; | |
|
305
2b72433d5c8c
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lindquist
parents:
304
diff
changeset
|
3823 this->asmLabel = false; |
| 159 | 3824 } |
| 3825 | |
| 3826 Statement *LabelStatement::syntaxCopy() | |
| 3827 { | |
| 3828 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 3829 return s; | |
| 3830 } | |
| 3831 | |
| 3832 Statement *LabelStatement::semantic(Scope *sc) | |
| 3833 { LabelDsymbol *ls; | |
| 3834 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3835 | |
| 3836 //printf("LabelStatement::semantic()\n"); | |
| 3837 ls = fd->searchLabel(ident); | |
| 3838 if (ls->statement) | |
| 3839 error("Label '%s' already defined", ls->toChars()); | |
| 3840 else | |
| 3841 ls->statement = this; | |
| 3842 tf = sc->tf; | |
| 309 | 3843 enclosinghandler = sc->tfOfTry; |
| 159 | 3844 sc = sc->push(); |
| 3845 sc->scopesym = sc->enclosing->scopesym; | |
| 3846 sc->callSuper |= CSXlabel; | |
| 3847 sc->slabel = this; | |
| 3848 if (statement) | |
| 3849 statement = statement->semantic(sc); | |
| 3850 sc->pop(); | |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
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parents:
304
diff
changeset
|
3851 |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3852 // LDC put in labmap |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3853 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
|
3854 |
| 159 | 3855 return this; |
| 3856 } | |
| 3857 | |
| 3858 Statements *LabelStatement::flatten(Scope *sc) | |
| 3859 { | |
| 3860 Statements *a = NULL; | |
| 3861 | |
| 3862 if (statement) | |
| 3863 { | |
| 3864 a = statement->flatten(sc); | |
| 3865 if (a) | |
| 3866 { | |
| 3867 if (!a->dim) | |
| 3868 { | |
| 3869 a->push(new ExpStatement(loc, NULL)); | |
| 3870 } | |
| 3871 Statement *s = (Statement *)a->data[0]; | |
| 3872 | |
| 3873 s = new LabelStatement(loc, ident, s); | |
| 3874 a->data[0] = s; | |
| 3875 } | |
| 3876 } | |
| 3877 | |
| 3878 return a; | |
| 3879 } | |
| 3880 | |
| 3881 | |
| 3882 int LabelStatement::usesEH() | |
| 3883 { | |
| 3884 return statement ? statement->usesEH() : FALSE; | |
| 3885 } | |
| 3886 | |
| 336 | 3887 int LabelStatement::blockExit() |
| 3888 { | |
| 3889 //printf("LabelStatement::blockExit(%p)\n", this); | |
| 3890 return statement ? statement->blockExit() : BEfallthru; | |
| 3891 } | |
| 3892 | |
| 159 | 3893 int LabelStatement::comeFrom() |
| 3894 { | |
| 3895 //printf("LabelStatement::comeFrom()\n"); | |
| 3896 return TRUE; | |
| 3897 } | |
| 3898 | |
| 3899 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3900 { | |
| 3901 buf->writestring(ident->toChars()); | |
| 3902 buf->writebyte(':'); | |
| 3903 buf->writenl(); | |
| 3904 if (statement) | |
| 3905 statement->toCBuffer(buf, hgs); | |
| 3906 } | |
| 3907 | |
| 3908 | |
| 3909 /******************************** LabelDsymbol ***************************/ | |
| 3910 | |
| 3911 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 3912 : Dsymbol(ident) | |
| 3913 { | |
| 3914 statement = NULL; | |
| 3915 } | |
| 3916 | |
| 3917 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 3918 { | |
| 3919 return this; | |
| 3920 } | |
| 3921 | |
| 3922 |