Mercurial > projects > ldc
annotate dmd/statement.c @ 380:2bf65352fb28
Mixed up argument types for aApply and aaApply.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Wed, 23 Jul 2008 17:55:20 +0200 |
| parents | d632801b15f0 |
| children | 722f5e90c39c |
| 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" | |
| 29 | |
| 30 /******************************** Statement ***************************/ | |
| 31 | |
| 32 Statement::Statement(Loc loc) | |
| 33 : loc(loc) | |
| 34 { | |
| 35 #ifdef _DH | |
| 36 // If this is an in{} contract scope statement (skip for determining | |
| 37 // inlineStatus of a function body for header content) | |
| 38 incontract = 0; | |
| 39 #endif | |
| 40 } | |
| 41 | |
| 42 Statement *Statement::syntaxCopy() | |
| 43 { | |
| 44 assert(0); | |
| 45 return NULL; | |
| 46 } | |
| 47 | |
| 48 void Statement::print() | |
| 49 { | |
| 50 fprintf(stdmsg, "%s\n", toChars()); | |
| 51 fflush(stdmsg); | |
| 52 } | |
| 53 | |
| 54 char *Statement::toChars() | |
| 55 { OutBuffer *buf; | |
| 56 HdrGenState hgs; | |
| 57 | |
| 58 buf = new OutBuffer(); | |
| 59 toCBuffer(buf, &hgs); | |
| 60 return buf->toChars(); | |
| 61 } | |
| 62 | |
| 63 void Statement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 64 { | |
| 65 buf->printf("Statement::toCBuffer()"); | |
| 66 buf->writenl(); | |
| 67 } | |
| 68 | |
| 69 Statement *Statement::semantic(Scope *sc) | |
| 70 { | |
| 71 return this; | |
| 72 } | |
| 73 | |
| 74 // Same as semantic(), but do create a new scope | |
| 75 | |
| 76 Statement *Statement::semanticScope(Scope *sc, Statement *sbreak, Statement *scontinue) | |
| 77 { Scope *scd; | |
| 78 Statement *s; | |
| 79 | |
| 80 scd = sc->push(); | |
| 81 if (sbreak) | |
| 82 scd->sbreak = sbreak; | |
| 83 if (scontinue) | |
| 84 scd->scontinue = scontinue; | |
| 85 s = semantic(scd); | |
| 86 scd->pop(); | |
| 87 return s; | |
| 88 } | |
| 89 | |
| 90 void Statement::error(const char *format, ...) | |
| 91 { | |
| 92 va_list ap; | |
| 93 va_start(ap, format); | |
| 94 ::verror(loc, format, ap); | |
| 95 va_end( ap ); | |
| 96 } | |
| 97 | |
| 98 int Statement::hasBreak() | |
| 99 { | |
| 100 //printf("Statement::hasBreak()\n"); | |
| 101 return FALSE; | |
| 102 } | |
| 103 | |
| 104 int Statement::hasContinue() | |
| 105 { | |
| 106 return FALSE; | |
| 107 } | |
| 108 | |
| 109 // TRUE if statement uses exception handling | |
| 110 | |
| 111 int Statement::usesEH() | |
| 112 { | |
| 113 return FALSE; | |
| 114 } | |
| 115 | |
| 336 | 116 /* Only valid after semantic analysis |
| 117 */ | |
| 118 int Statement::blockExit() | |
| 119 { | |
| 120 printf("Statement::blockExit(%p)\n", this); | |
| 121 printf("%s\n", toChars()); | |
| 122 assert(0); | |
| 123 return BEany; | |
| 124 } | |
| 125 | |
| 159 | 126 // TRUE if statement may fall off the end without a throw or return |
| 127 | |
| 128 int Statement::fallOffEnd() | |
| 129 { | |
| 130 return TRUE; | |
| 131 } | |
| 132 | |
| 133 // TRUE if statement 'comes from' somewhere else, like a goto | |
| 134 | |
| 135 int Statement::comeFrom() | |
| 136 { | |
| 137 //printf("Statement::comeFrom()\n"); | |
| 138 return FALSE; | |
| 139 } | |
| 140 | |
| 141 /**************************************** | |
| 142 * If this statement has code that needs to run in a finally clause | |
| 143 * at the end of the current scope, return that code in the form of | |
| 144 * a Statement. | |
| 145 * Output: | |
| 146 * *sentry code executed upon entry to the scope | |
| 147 * *sexception code executed upon exit from the scope via exception | |
| 148 * *sfinally code executed in finally block | |
| 149 */ | |
| 150 | |
| 151 void Statement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 152 { | |
| 153 //printf("Statement::scopeCode()\n"); | |
| 154 //print(); | |
| 155 *sentry = NULL; | |
| 156 *sexception = NULL; | |
| 157 *sfinally = NULL; | |
| 158 } | |
| 159 | |
| 160 /********************************* | |
| 161 * Flatten out the scope by presenting the statement | |
| 162 * as an array of statements. | |
| 163 * Returns NULL if no flattening necessary. | |
| 164 */ | |
| 165 | |
| 166 Statements *Statement::flatten(Scope *sc) | |
| 167 { | |
| 168 return NULL; | |
| 169 } | |
| 170 | |
| 171 | |
| 172 /******************************** ExpStatement ***************************/ | |
| 173 | |
| 174 ExpStatement::ExpStatement(Loc loc, Expression *exp) | |
| 175 : Statement(loc) | |
| 176 { | |
| 177 this->exp = exp; | |
| 178 } | |
| 179 | |
| 180 Statement *ExpStatement::syntaxCopy() | |
| 181 { | |
| 182 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 183 ExpStatement *es = new ExpStatement(loc, e); | |
| 184 return es; | |
| 185 } | |
| 186 | |
| 187 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 188 { | |
| 189 if (exp) | |
| 190 exp->toCBuffer(buf, hgs); | |
| 191 buf->writeByte(';'); | |
| 192 if (!hgs->FLinit.init) | |
| 193 buf->writenl(); | |
| 194 } | |
| 195 | |
| 196 Statement *ExpStatement::semantic(Scope *sc) | |
| 197 { | |
| 198 if (exp) | |
| 199 { | |
| 200 //printf("ExpStatement::semantic() %s\n", exp->toChars()); | |
| 201 exp = exp->semantic(sc); | |
| 202 exp = resolveProperties(sc, exp); | |
| 203 exp->checkSideEffect(0); | |
| 204 exp = exp->optimize(0); | |
| 205 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0); | |
| 206 } | |
| 207 return this; | |
| 208 } | |
| 209 | |
| 336 | 210 int ExpStatement::blockExit() |
| 211 { int result = BEfallthru; | |
| 212 | |
| 213 if (exp) | |
| 214 { | |
| 215 if (exp->op == TOKhalt) | |
| 216 return BEhalt; | |
| 217 if (exp->op == TOKassert) | |
| 218 { AssertExp *a = (AssertExp *)exp; | |
| 219 | |
| 220 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 221 return BEhalt; | |
| 222 } | |
| 223 if (exp->canThrow()) | |
| 224 result |= BEthrow; | |
| 225 } | |
| 226 return result; | |
| 227 } | |
| 228 | |
| 159 | 229 int ExpStatement::fallOffEnd() |
| 230 { | |
| 231 if (exp) | |
| 232 { | |
| 233 if (exp->op == TOKassert) | |
| 234 { AssertExp *a = (AssertExp *)exp; | |
| 235 | |
| 236 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 237 return FALSE; | |
| 238 } | |
| 239 else if (exp->op == TOKhalt) | |
| 240 return FALSE; | |
| 241 } | |
| 242 return TRUE; | |
| 243 } | |
| 244 | |
| 245 /******************************** CompileStatement ***************************/ | |
| 246 | |
| 247 CompileStatement::CompileStatement(Loc loc, Expression *exp) | |
| 248 : Statement(loc) | |
| 249 { | |
| 250 this->exp = exp; | |
| 251 } | |
| 252 | |
| 253 Statement *CompileStatement::syntaxCopy() | |
| 254 { | |
| 255 Expression *e = exp->syntaxCopy(); | |
| 256 CompileStatement *es = new CompileStatement(loc, e); | |
| 257 return es; | |
| 258 } | |
| 259 | |
| 260 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 261 { | |
| 262 buf->writestring("mixin("); | |
| 263 exp->toCBuffer(buf, hgs); | |
| 264 buf->writestring(");"); | |
| 265 if (!hgs->FLinit.init) | |
| 266 buf->writenl(); | |
| 267 } | |
| 268 | |
| 336 | 269 Statements *CompileStatement::flatten(Scope *sc) |
| 159 | 270 { |
| 336 | 271 //printf("CompileStatement::flatten() %s\n", exp->toChars()); |
| 159 | 272 exp = exp->semantic(sc); |
| 273 exp = resolveProperties(sc, exp); | |
| 274 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 275 if (exp->op != TOKstring) | |
| 276 { error("argument to mixin must be a string, not (%s)", exp->toChars()); | |
| 336 | 277 return NULL; |
| 159 | 278 } |
| 279 StringExp *se = (StringExp *)exp; | |
| 280 se = se->toUTF8(sc); | |
| 281 Parser p(sc->module, (unsigned char *)se->string, se->len, 0); | |
| 282 p.loc = loc; | |
| 283 p.nextToken(); | |
| 284 | |
| 336 | 285 Statements *a = new Statements(); |
| 159 | 286 while (p.token.value != TOKeof) |
| 287 { | |
| 288 Statement *s = p.parseStatement(PSsemi | PScurlyscope); | |
| 336 | 289 a->push(s); |
| 159 | 290 } |
| 336 | 291 return a; |
| 292 } | |
| 293 | |
| 294 Statement *CompileStatement::semantic(Scope *sc) | |
| 295 { | |
| 296 //printf("CompileStatement::semantic() %s\n", exp->toChars()); | |
| 297 Statements *a = flatten(sc); | |
| 298 if (!a) | |
| 299 return NULL; | |
| 300 Statement *s = new CompoundStatement(loc, a); | |
| 159 | 301 return s->semantic(sc); |
| 302 } | |
| 303 | |
| 304 | |
| 305 /******************************** DeclarationStatement ***************************/ | |
| 306 | |
| 307 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration) | |
| 308 : ExpStatement(loc, new DeclarationExp(loc, declaration)) | |
| 309 { | |
| 310 } | |
| 311 | |
| 312 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp) | |
| 313 : ExpStatement(loc, exp) | |
| 314 { | |
| 315 } | |
| 316 | |
| 317 Statement *DeclarationStatement::syntaxCopy() | |
| 318 { | |
| 319 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy()); | |
| 320 return ds; | |
| 321 } | |
| 322 | |
| 323 void DeclarationStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 324 { | |
| 325 //printf("DeclarationStatement::scopeCode()\n"); | |
| 326 //print(); | |
| 327 | |
| 328 *sentry = NULL; | |
| 329 *sexception = NULL; | |
| 330 *sfinally = NULL; | |
| 331 | |
| 332 if (exp) | |
| 333 { | |
| 334 if (exp->op == TOKdeclaration) | |
| 335 { | |
| 336 DeclarationExp *de = (DeclarationExp *)(exp); | |
| 337 VarDeclaration *v = de->declaration->isVarDeclaration(); | |
| 338 if (v) | |
| 339 { Expression *e; | |
| 340 | |
| 341 e = v->callAutoDtor(); | |
| 342 if (e) | |
| 343 { | |
| 344 //printf("dtor is: "); e->print(); | |
| 345 *sfinally = new ExpStatement(loc, e); | |
| 346 } | |
| 347 } | |
| 348 } | |
| 349 } | |
| 350 } | |
| 351 | |
| 352 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 353 { | |
| 354 exp->toCBuffer(buf, hgs); | |
| 355 } | |
| 356 | |
| 357 | |
| 358 /******************************** CompoundStatement ***************************/ | |
| 359 | |
| 360 CompoundStatement::CompoundStatement(Loc loc, Statements *s) | |
| 361 : Statement(loc) | |
| 362 { | |
| 363 statements = s; | |
| 364 } | |
| 365 | |
| 366 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2) | |
| 367 : Statement(loc) | |
| 368 { | |
| 369 statements = new Statements(); | |
| 370 statements->reserve(2); | |
| 371 statements->push(s1); | |
| 372 statements->push(s2); | |
| 373 } | |
| 374 | |
| 375 Statement *CompoundStatement::syntaxCopy() | |
| 376 { | |
| 377 Statements *a = new Statements(); | |
| 378 a->setDim(statements->dim); | |
| 379 for (size_t i = 0; i < statements->dim; i++) | |
| 380 { Statement *s = (Statement *)statements->data[i]; | |
| 381 if (s) | |
| 382 s = s->syntaxCopy(); | |
| 383 a->data[i] = s; | |
| 384 } | |
| 385 CompoundStatement *cs = new CompoundStatement(loc, a); | |
| 386 return cs; | |
| 387 } | |
| 388 | |
| 389 | |
| 390 Statement *CompoundStatement::semantic(Scope *sc) | |
| 391 { Statement *s; | |
| 392 | |
| 393 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 394 | |
| 395 for (size_t i = 0; i < statements->dim; ) | |
| 396 { | |
| 397 s = (Statement *) statements->data[i]; | |
| 398 if (s) | |
| 399 { Statements *a = s->flatten(sc); | |
| 400 | |
| 401 if (a) | |
| 402 { | |
| 403 statements->remove(i); | |
| 404 statements->insert(i, a); | |
| 405 continue; | |
| 406 } | |
| 407 s = s->semantic(sc); | |
| 408 statements->data[i] = s; | |
| 409 if (s) | |
| 410 { | |
| 411 Statement *sentry; | |
| 412 Statement *sexception; | |
| 413 Statement *sfinally; | |
| 414 | |
| 415 s->scopeCode(&sentry, &sexception, &sfinally); | |
| 416 if (sentry) | |
| 417 { | |
| 418 sentry = sentry->semantic(sc); | |
| 419 statements->data[i] = sentry; | |
| 420 } | |
| 421 if (sexception) | |
| 422 { | |
| 423 if (i + 1 == statements->dim && !sfinally) | |
| 424 { | |
| 425 #if 1 | |
| 426 sexception = sexception->semantic(sc); | |
| 427 #else | |
| 428 statements->push(sexception); | |
| 429 if (sfinally) | |
| 430 // Assume sexception does not throw | |
| 431 statements->push(sfinally); | |
| 432 #endif | |
| 433 } | |
| 434 else | |
| 435 { | |
| 436 /* Rewrite: | |
| 437 * s; s1; s2; | |
| 438 * As: | |
| 439 * s; | |
| 440 * try { s1; s2; } | |
| 441 * catch (Object __o) | |
| 442 * { sexception; throw __o; } | |
| 443 */ | |
| 444 Statement *body; | |
| 445 Statements *a = new Statements(); | |
| 446 | |
| 447 for (int j = i + 1; j < statements->dim; j++) | |
| 448 { | |
| 449 a->push(statements->data[j]); | |
| 450 } | |
| 451 body = new CompoundStatement(0, a); | |
| 452 body = new ScopeStatement(0, body); | |
| 453 | |
| 454 static int num; | |
| 455 char name[3 + sizeof(num) * 3 + 1]; | |
| 456 sprintf(name, "__o%d", ++num); | |
| 457 Identifier *id = Lexer::idPool(name); | |
| 458 | |
| 459 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id)); | |
| 460 handler = new CompoundStatement(0, sexception, handler); | |
| 461 | |
| 462 Array *catches = new Array(); | |
| 463 Catch *ctch = new Catch(0, NULL, id, handler); | |
| 464 catches->push(ctch); | |
| 465 s = new TryCatchStatement(0, body, catches); | |
| 466 | |
| 467 if (sfinally) | |
| 468 s = new TryFinallyStatement(0, s, sfinally); | |
| 469 s = s->semantic(sc); | |
| 470 statements->setDim(i + 1); | |
| 471 statements->push(s); | |
| 472 break; | |
| 473 } | |
| 474 } | |
| 475 else if (sfinally) | |
| 476 { | |
| 477 if (0 && i + 1 == statements->dim) | |
| 478 { | |
| 479 statements->push(sfinally); | |
| 480 } | |
| 481 else | |
| 482 { | |
| 483 /* Rewrite: | |
| 484 * s; s1; s2; | |
| 485 * As: | |
| 486 * s; try { s1; s2; } finally { sfinally; } | |
| 487 */ | |
| 488 Statement *body; | |
| 489 Statements *a = new Statements(); | |
| 490 | |
| 491 for (int j = i + 1; j < statements->dim; j++) | |
| 492 { | |
| 493 a->push(statements->data[j]); | |
| 494 } | |
| 495 body = new CompoundStatement(0, a); | |
| 496 s = new TryFinallyStatement(0, body, sfinally); | |
| 497 s = s->semantic(sc); | |
| 498 statements->setDim(i + 1); | |
| 499 statements->push(s); | |
| 500 break; | |
| 501 } | |
| 502 } | |
| 503 } | |
| 504 } | |
| 505 i++; | |
| 506 } | |
|
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092468448d25
[svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents:
215
diff
changeset
|
507 if (statements->dim == 1 && !isAsmBlockStatement()) |
| 336 | 508 { |
| 509 return (Statement *)statements->data[0]; | |
| 510 } | |
| 159 | 511 return this; |
| 512 } | |
| 513 | |
| 514 Statements *CompoundStatement::flatten(Scope *sc) | |
| 515 { | |
| 516 return statements; | |
| 517 } | |
| 518 | |
| 519 ReturnStatement *CompoundStatement::isReturnStatement() | |
| 336 | 520 { |
| 159 | 521 ReturnStatement *rs = NULL; |
| 522 | |
| 336 | 523 for (int i = 0; i < statements->dim; i++) |
| 524 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 525 if (s) |
| 526 { | |
| 527 rs = s->isReturnStatement(); | |
| 528 if (rs) | |
| 529 break; | |
| 530 } | |
| 531 } | |
| 532 return rs; | |
| 533 } | |
| 534 | |
| 535 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 336 | 536 { |
| 537 for (int i = 0; i < statements->dim; i++) | |
| 538 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 539 if (s) |
| 540 s->toCBuffer(buf, hgs); | |
| 541 } | |
| 542 } | |
| 543 | |
| 544 int CompoundStatement::usesEH() | |
| 545 { | |
| 546 for (int i = 0; i < statements->dim; i++) | |
| 336 | 547 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 548 if (s && s->usesEH()) |
| 549 return TRUE; | |
| 550 } | |
| 551 return FALSE; | |
| 552 } | |
| 553 | |
| 336 | 554 int CompoundStatement::blockExit() |
| 555 { | |
| 556 //printf("CompoundStatement::blockExit(%p) %d\n", this, statements->dim); | |
| 557 int result = BEfallthru; | |
| 558 for (size_t i = 0; i < statements->dim; i++) | |
| 559 { Statement *s = (Statement *) statements->data[i]; | |
| 560 if (s) | |
| 561 { | |
| 562 //printf("result = x%x\n", result); | |
| 563 //printf("%s\n", s->toChars()); | |
| 564 if (!(result & BEfallthru) && !s->comeFrom()) | |
| 565 { | |
| 566 if (global.params.warnings) | |
| 567 { fprintf(stdmsg, "warning - "); | |
| 568 s->error("statement is not reachable"); | |
| 569 } | |
| 570 } | |
| 571 | |
| 572 result &= ~BEfallthru; | |
| 573 result |= s->blockExit(); | |
| 574 } | |
| 575 } | |
| 576 return result; | |
| 577 } | |
| 578 | |
| 159 | 579 int CompoundStatement::fallOffEnd() |
| 580 { int falloff = TRUE; | |
| 581 | |
| 582 //printf("CompoundStatement::fallOffEnd() %s\n", toChars()); | |
| 583 for (int i = 0; i < statements->dim; i++) | |
| 584 { Statement *s = (Statement *)statements->data[i]; | |
| 585 | |
| 586 if (!s) | |
| 587 continue; | |
| 588 | |
| 589 if (!falloff && global.params.warnings && !s->comeFrom()) | |
| 590 { | |
|
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[svn r231] Changed: warnings are no longer treated as an error.
lindquist
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159
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591 warning("%s: statement is not reachable", s->loc.toChars()); |
| 159 | 592 } |
| 593 falloff = s->fallOffEnd(); | |
| 594 } | |
| 595 return falloff; | |
| 596 } | |
| 597 | |
| 598 int CompoundStatement::comeFrom() | |
| 599 { int comefrom = FALSE; | |
| 600 | |
| 601 //printf("CompoundStatement::comeFrom()\n"); | |
| 602 for (int i = 0; i < statements->dim; i++) | |
| 603 { Statement *s = (Statement *)statements->data[i]; | |
| 604 | |
| 605 if (!s) | |
| 606 continue; | |
| 607 | |
| 608 comefrom |= s->comeFrom(); | |
| 609 } | |
| 610 return comefrom; | |
| 611 } | |
| 612 | |
| 613 | |
| 614 /**************************** UnrolledLoopStatement ***************************/ | |
| 615 | |
| 616 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s) | |
| 617 : Statement(loc) | |
| 618 { | |
| 619 statements = s; | |
| 309 | 620 enclosinghandler = NULL; |
| 159 | 621 } |
| 622 | |
| 623 Statement *UnrolledLoopStatement::syntaxCopy() | |
| 624 { | |
| 625 Statements *a = new Statements(); | |
| 626 a->setDim(statements->dim); | |
| 627 for (size_t i = 0; i < statements->dim; i++) | |
| 628 { Statement *s = (Statement *)statements->data[i]; | |
| 629 if (s) | |
| 630 s = s->syntaxCopy(); | |
| 631 a->data[i] = s; | |
| 632 } | |
| 633 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
| 634 return cs; | |
| 635 } | |
| 636 | |
| 637 | |
| 638 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
| 639 { | |
| 640 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 641 | |
| 309 | 642 enclosinghandler = sc->tfOfTry; |
| 159 | 643 |
| 644 sc->noctor++; | |
| 645 Scope *scd = sc->push(); | |
| 646 scd->sbreak = this; | |
| 647 scd->scontinue = this; | |
| 648 | |
| 649 for (size_t i = 0; i < statements->dim; i++) | |
| 650 { | |
| 651 Statement *s = (Statement *) statements->data[i]; | |
| 652 if (s) | |
| 653 { | |
| 654 s = s->semantic(scd); | |
| 655 statements->data[i] = s; | |
| 656 } | |
| 657 } | |
| 658 | |
| 659 scd->pop(); | |
| 660 sc->noctor--; | |
| 661 return this; | |
| 662 } | |
| 663 | |
| 664 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 665 { | |
| 666 buf->writestring("unrolled {"); | |
| 667 buf->writenl(); | |
| 668 | |
| 669 for (size_t i = 0; i < statements->dim; i++) | |
| 670 { Statement *s; | |
| 671 | |
| 672 s = (Statement *) statements->data[i]; | |
| 673 if (s) | |
| 674 s->toCBuffer(buf, hgs); | |
| 675 } | |
| 676 | |
| 677 buf->writeByte('}'); | |
| 678 buf->writenl(); | |
| 679 } | |
| 680 | |
| 681 int UnrolledLoopStatement::hasBreak() | |
| 682 { | |
| 683 return TRUE; | |
| 684 } | |
| 685 | |
| 686 int UnrolledLoopStatement::hasContinue() | |
| 687 { | |
| 688 return TRUE; | |
| 689 } | |
| 690 | |
| 691 int UnrolledLoopStatement::usesEH() | |
| 692 { | |
| 693 for (size_t i = 0; i < statements->dim; i++) | |
| 336 | 694 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 695 if (s && s->usesEH()) |
| 696 return TRUE; | |
| 697 } | |
| 698 return FALSE; | |
| 699 } | |
| 700 | |
| 336 | 701 int UnrolledLoopStatement::blockExit() |
| 702 { | |
| 703 int result = BEfallthru; | |
| 704 for (size_t i = 0; i < statements->dim; i++) | |
| 705 { Statement *s = (Statement *) statements->data[i]; | |
| 706 if (s) | |
| 707 { | |
| 708 int r = s->blockExit(); | |
| 709 result |= r & ~(BEbreak | BEcontinue); | |
| 710 } | |
| 711 } | |
| 712 return result; | |
| 713 } | |
| 714 | |
| 159 | 715 int UnrolledLoopStatement::fallOffEnd() |
| 716 { | |
| 717 //printf("UnrolledLoopStatement::fallOffEnd()\n"); | |
| 718 for (size_t i = 0; i < statements->dim; i++) | |
| 719 { Statement *s = (Statement *)statements->data[i]; | |
| 720 | |
| 721 if (s) | |
| 722 s->fallOffEnd(); | |
| 723 } | |
| 724 return TRUE; | |
| 725 } | |
| 726 | |
| 727 int UnrolledLoopStatement::comeFrom() | |
| 728 { int comefrom = FALSE; | |
| 729 | |
| 730 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
| 731 for (size_t i = 0; i < statements->dim; i++) | |
| 732 { Statement *s = (Statement *)statements->data[i]; | |
| 733 | |
| 734 if (!s) | |
| 735 continue; | |
| 736 | |
| 737 comefrom |= s->comeFrom(); | |
| 738 } | |
| 739 return comefrom; | |
| 740 } | |
| 741 | |
| 742 | |
| 743 /******************************** ScopeStatement ***************************/ | |
| 744 | |
| 745 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
| 746 : Statement(loc) | |
| 747 { | |
| 748 this->statement = s; | |
| 749 } | |
| 750 | |
| 751 Statement *ScopeStatement::syntaxCopy() | |
| 752 { | |
| 753 Statement *s; | |
| 754 | |
| 755 s = statement ? statement->syntaxCopy() : NULL; | |
| 756 s = new ScopeStatement(loc, s); | |
| 757 return s; | |
| 758 } | |
| 759 | |
| 760 | |
| 761 Statement *ScopeStatement::semantic(Scope *sc) | |
| 762 { ScopeDsymbol *sym; | |
| 763 | |
| 764 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
| 765 if (statement) | |
| 766 { Statements *a; | |
| 767 | |
| 768 sym = new ScopeDsymbol(); | |
| 769 sym->parent = sc->scopesym; | |
| 770 sc = sc->push(sym); | |
| 771 | |
| 772 a = statement->flatten(sc); | |
| 773 if (a) | |
| 774 { | |
| 775 statement = new CompoundStatement(loc, a); | |
| 776 } | |
| 777 | |
| 778 statement = statement->semantic(sc); | |
| 779 if (statement) | |
| 780 { | |
| 781 Statement *sentry; | |
| 782 Statement *sexception; | |
| 783 Statement *sfinally; | |
| 784 | |
| 785 statement->scopeCode(&sentry, &sexception, &sfinally); | |
| 786 if (sfinally) | |
| 787 { | |
| 788 //printf("adding sfinally\n"); | |
| 789 statement = new CompoundStatement(loc, statement, sfinally); | |
| 790 } | |
| 791 } | |
| 792 | |
| 793 sc->pop(); | |
| 794 } | |
| 795 return this; | |
| 796 } | |
| 797 | |
| 798 int ScopeStatement::hasBreak() | |
| 799 { | |
| 800 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
| 801 return statement ? statement->hasBreak() : FALSE; | |
| 802 } | |
| 803 | |
| 804 int ScopeStatement::hasContinue() | |
| 805 { | |
| 806 return statement ? statement->hasContinue() : FALSE; | |
| 807 } | |
| 808 | |
| 809 int ScopeStatement::usesEH() | |
| 810 { | |
| 811 return statement ? statement->usesEH() : FALSE; | |
| 812 } | |
| 813 | |
| 336 | 814 int ScopeStatement::blockExit() |
| 815 { | |
| 816 //printf("ScopeStatement::blockExit(%p)\n", statement); | |
| 817 return statement ? statement->blockExit() : BEfallthru; | |
| 818 } | |
| 819 | |
| 159 | 820 int ScopeStatement::fallOffEnd() |
| 821 { | |
| 822 return statement ? statement->fallOffEnd() : TRUE; | |
| 823 } | |
| 824 | |
| 825 int ScopeStatement::comeFrom() | |
| 826 { | |
| 827 //printf("ScopeStatement::comeFrom()\n"); | |
| 828 return statement ? statement->comeFrom() : FALSE; | |
| 829 } | |
| 830 | |
| 831 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 832 { | |
| 833 buf->writeByte('{'); | |
| 834 buf->writenl(); | |
| 835 | |
| 836 if (statement) | |
| 837 statement->toCBuffer(buf, hgs); | |
| 838 | |
| 839 buf->writeByte('}'); | |
| 840 buf->writenl(); | |
| 841 } | |
| 842 | |
| 843 /******************************** WhileStatement ***************************/ | |
| 844 | |
| 845 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
| 846 : Statement(loc) | |
| 847 { | |
| 848 condition = c; | |
| 849 body = b; | |
| 309 | 850 enclosinghandler = NULL; |
| 159 | 851 } |
| 852 | |
| 853 Statement *WhileStatement::syntaxCopy() | |
| 854 { | |
| 855 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 856 return s; | |
| 857 } | |
| 858 | |
| 859 | |
| 860 Statement *WhileStatement::semantic(Scope *sc) | |
| 861 { | |
| 862 #if 0 | |
| 863 if (condition->op == TOKmatch) | |
| 864 { | |
| 865 /* Rewrite while (condition) body as: | |
| 866 * if (condition) | |
| 867 * do | |
| 868 * body | |
| 869 * while ((_match = _match.opNext), _match); | |
| 870 */ | |
| 871 | |
| 872 Expression *ew = new IdentifierExp(0, Id::_match); | |
| 873 ew = new DotIdExp(0, ew, Id::next); | |
| 874 ew = new AssignExp(0, new IdentifierExp(0, Id::_match), ew); | |
| 875 ////ew = new EqualExp(TOKnotequal, 0, ew, new NullExp(0)); | |
| 876 Expression *ev = new IdentifierExp(0, Id::_match); | |
| 877 //ev = new CastExp(0, ev, Type::tvoidptr); | |
| 878 ew = new CommaExp(0, ew, ev); | |
| 879 Statement *sw = new DoStatement(loc, body, ew); | |
| 880 Statement *si = new IfStatement(loc, condition, sw, NULL); | |
| 881 return si->semantic(sc); | |
| 882 } | |
| 883 #endif | |
| 884 | |
| 309 | 885 enclosinghandler = sc->tfOfTry; |
| 159 | 886 |
| 887 condition = condition->semantic(sc); | |
| 888 condition = resolveProperties(sc, condition); | |
| 889 condition = condition->optimize(WANTvalue); | |
| 890 condition = condition->checkToBoolean(); | |
| 891 | |
| 892 sc->noctor++; | |
| 893 | |
| 894 Scope *scd = sc->push(); | |
| 895 scd->sbreak = this; | |
| 896 scd->scontinue = this; | |
| 897 if (body) | |
| 898 body = body->semantic(scd); | |
| 899 scd->pop(); | |
| 900 | |
| 901 sc->noctor--; | |
| 902 | |
| 903 return this; | |
| 904 } | |
| 905 | |
| 906 int WhileStatement::hasBreak() | |
| 907 { | |
| 908 return TRUE; | |
| 909 } | |
| 910 | |
| 911 int WhileStatement::hasContinue() | |
| 912 { | |
| 913 return TRUE; | |
| 914 } | |
| 915 | |
| 916 int WhileStatement::usesEH() | |
| 917 { | |
| 918 return body ? body->usesEH() : 0; | |
| 919 } | |
| 920 | |
| 336 | 921 int WhileStatement::blockExit() |
| 922 { | |
| 923 //printf("WhileStatement::blockExit(%p)\n", this); | |
| 924 | |
| 925 int result = BEnone; | |
| 926 if (condition->canThrow()) | |
| 927 result |= BEthrow; | |
| 928 if (condition->isBool(TRUE)) | |
| 929 { | |
| 930 if (body) | |
| 931 { result |= body->blockExit(); | |
| 932 if (result & BEbreak) | |
| 933 result |= BEfallthru; | |
| 934 } | |
| 935 } | |
| 936 else if (condition->isBool(FALSE)) | |
| 937 { | |
| 938 result |= BEfallthru; | |
| 939 } | |
| 940 else | |
| 941 { | |
| 942 if (body) | |
| 943 result |= body->blockExit(); | |
| 944 result |= BEfallthru; | |
| 945 } | |
| 946 result &= ~(BEbreak | BEcontinue); | |
| 947 return result; | |
| 948 } | |
| 949 | |
| 159 | 950 int WhileStatement::fallOffEnd() |
| 951 { | |
| 952 if (body) | |
| 953 body->fallOffEnd(); | |
| 954 return TRUE; | |
| 955 } | |
| 956 | |
| 957 int WhileStatement::comeFrom() | |
| 958 { | |
| 959 if (body) | |
| 960 return body->comeFrom(); | |
| 961 return FALSE; | |
| 962 } | |
| 963 | |
| 964 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 965 { | |
| 966 buf->writestring("while ("); | |
| 967 condition->toCBuffer(buf, hgs); | |
| 968 buf->writebyte(')'); | |
| 969 buf->writenl(); | |
| 970 if (body) | |
| 971 body->toCBuffer(buf, hgs); | |
| 972 } | |
| 973 | |
| 974 /******************************** DoStatement ***************************/ | |
| 975 | |
| 976 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
| 977 : Statement(loc) | |
| 978 { | |
| 979 body = b; | |
| 980 condition = c; | |
| 309 | 981 enclosinghandler = NULL; |
| 159 | 982 } |
| 983 | |
| 984 Statement *DoStatement::syntaxCopy() | |
| 985 { | |
| 986 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
| 987 return s; | |
| 988 } | |
| 989 | |
| 990 | |
| 991 Statement *DoStatement::semantic(Scope *sc) | |
| 992 { | |
| 309 | 993 enclosinghandler = sc->tfOfTry; |
| 159 | 994 |
| 995 sc->noctor++; | |
| 996 if (body) | |
| 997 body = body->semanticScope(sc, this, this); | |
| 998 sc->noctor--; | |
| 999 condition = condition->semantic(sc); | |
| 1000 condition = resolveProperties(sc, condition); | |
| 1001 condition = condition->optimize(WANTvalue); | |
| 1002 | |
| 1003 condition = condition->checkToBoolean(); | |
| 1004 | |
| 1005 return this; | |
| 1006 } | |
| 1007 | |
| 1008 int DoStatement::hasBreak() | |
| 1009 { | |
| 1010 return TRUE; | |
| 1011 } | |
| 1012 | |
| 1013 int DoStatement::hasContinue() | |
| 1014 { | |
| 1015 return TRUE; | |
| 1016 } | |
| 1017 | |
| 1018 int DoStatement::usesEH() | |
| 1019 { | |
| 1020 return body ? body->usesEH() : 0; | |
| 1021 } | |
| 1022 | |
| 336 | 1023 int DoStatement::blockExit() |
| 1024 { int result; | |
| 1025 | |
| 1026 if (body) | |
| 1027 { result = body->blockExit(); | |
| 1028 if (result == BEbreak) | |
| 1029 return BEfallthru; | |
| 1030 if (result & BEcontinue) | |
| 1031 result |= BEfallthru; | |
| 1032 } | |
| 1033 else | |
| 1034 result = BEfallthru; | |
| 1035 if (result & BEfallthru) | |
| 1036 { if (condition->canThrow()) | |
| 1037 result |= BEthrow; | |
| 1038 if (!(result & BEbreak) && condition->isBool(TRUE)) | |
| 1039 result &= ~BEfallthru; | |
| 1040 } | |
| 1041 result &= ~(BEbreak | BEcontinue); | |
| 1042 return result; | |
| 1043 } | |
| 1044 | |
| 159 | 1045 int DoStatement::fallOffEnd() |
| 1046 { | |
| 1047 if (body) | |
| 1048 body->fallOffEnd(); | |
| 1049 return TRUE; | |
| 1050 } | |
| 1051 | |
| 1052 int DoStatement::comeFrom() | |
| 1053 { | |
| 1054 if (body) | |
| 1055 return body->comeFrom(); | |
| 1056 return FALSE; | |
| 1057 } | |
| 1058 | |
| 1059 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1060 { | |
| 1061 buf->writestring("do"); | |
| 1062 buf->writenl(); | |
| 1063 if (body) | |
| 1064 body->toCBuffer(buf, hgs); | |
| 1065 buf->writestring("while ("); | |
| 1066 condition->toCBuffer(buf, hgs); | |
| 1067 buf->writebyte(')'); | |
| 1068 } | |
| 1069 | |
| 1070 /******************************** ForStatement ***************************/ | |
| 1071 | |
| 1072 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
| 1073 : Statement(loc) | |
| 1074 { | |
| 1075 this->init = init; | |
| 1076 this->condition = condition; | |
| 1077 this->increment = increment; | |
| 1078 this->body = body; | |
| 309 | 1079 this->enclosinghandler = NULL; |
| 159 | 1080 } |
| 1081 | |
| 1082 Statement *ForStatement::syntaxCopy() | |
| 1083 { | |
| 1084 Statement *i = NULL; | |
| 1085 if (init) | |
| 1086 i = init->syntaxCopy(); | |
| 1087 Expression *c = NULL; | |
| 1088 if (condition) | |
| 1089 c = condition->syntaxCopy(); | |
| 1090 Expression *inc = NULL; | |
| 1091 if (increment) | |
| 1092 inc = increment->syntaxCopy(); | |
| 1093 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
| 1094 return s; | |
| 1095 } | |
| 1096 | |
| 1097 Statement *ForStatement::semantic(Scope *sc) | |
| 1098 { | |
| 309 | 1099 enclosinghandler = sc->tfOfTry; |
| 159 | 1100 |
| 1101 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1102 sym->parent = sc->scopesym; | |
| 1103 sc = sc->push(sym); | |
| 1104 if (init) | |
| 1105 init = init->semantic(sc); | |
| 1106 if (!condition) | |
| 1107 // Use a default value | |
| 1108 condition = new IntegerExp(loc, 1, Type::tboolean); | |
| 1109 sc->noctor++; | |
| 1110 condition = condition->semantic(sc); | |
| 1111 condition = resolveProperties(sc, condition); | |
| 1112 condition = condition->optimize(WANTvalue); | |
| 1113 condition = condition->checkToBoolean(); | |
| 1114 if (increment) | |
| 1115 increment = increment->semantic(sc); | |
| 1116 | |
| 1117 sc->sbreak = this; | |
| 1118 sc->scontinue = this; | |
| 1119 body = body->semantic(sc); | |
| 1120 sc->noctor--; | |
| 1121 | |
| 1122 sc->pop(); | |
| 1123 return this; | |
| 1124 } | |
| 1125 | |
| 1126 void ForStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 1127 { | |
| 1128 //printf("ForStatement::scopeCode()\n"); | |
| 1129 //print(); | |
| 1130 if (init) | |
| 1131 init->scopeCode(sentry, sexception, sfinally); | |
| 1132 else | |
| 1133 Statement::scopeCode(sentry, sexception, sfinally); | |
| 1134 } | |
| 1135 | |
| 1136 int ForStatement::hasBreak() | |
| 1137 { | |
| 1138 //printf("ForStatement::hasBreak()\n"); | |
| 1139 return TRUE; | |
| 1140 } | |
| 1141 | |
| 1142 int ForStatement::hasContinue() | |
| 1143 { | |
| 1144 return TRUE; | |
| 1145 } | |
| 1146 | |
| 1147 int ForStatement::usesEH() | |
| 1148 { | |
| 1149 return (init && init->usesEH()) || body->usesEH(); | |
| 1150 } | |
| 1151 | |
| 336 | 1152 int ForStatement::blockExit() |
| 1153 { int result = BEfallthru; | |
| 1154 | |
| 1155 if (init) | |
| 1156 { result = init->blockExit(); | |
| 1157 if (!(result & BEfallthru)) | |
| 1158 return result; | |
| 1159 } | |
| 1160 if (condition) | |
| 1161 { if (condition->canThrow()) | |
| 1162 result |= BEthrow; | |
| 1163 } | |
| 1164 else | |
| 1165 result &= ~BEfallthru; // the body must do the exiting | |
| 1166 if (body) | |
| 1167 { int r = body->blockExit(); | |
| 1168 if (r & BEbreak) | |
| 1169 result |= BEfallthru; | |
| 1170 result |= r & ~(BEbreak | BEcontinue); | |
| 1171 } | |
| 1172 if (increment && increment->canThrow()) | |
| 1173 result |= BEthrow; | |
| 1174 return result; | |
| 1175 } | |
| 1176 | |
| 159 | 1177 int ForStatement::fallOffEnd() |
| 1178 { | |
| 1179 if (body) | |
| 1180 body->fallOffEnd(); | |
| 1181 return TRUE; | |
| 1182 } | |
| 1183 | |
| 1184 int ForStatement::comeFrom() | |
| 1185 { | |
| 1186 //printf("ForStatement::comeFrom()\n"); | |
| 1187 if (body) | |
| 1188 { int result = body->comeFrom(); | |
| 1189 //printf("result = %d\n", result); | |
| 1190 return result; | |
| 1191 } | |
| 1192 return FALSE; | |
| 1193 } | |
| 1194 | |
| 1195 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1196 { | |
| 1197 buf->writestring("for ("); | |
| 1198 if (init) | |
| 1199 { | |
| 1200 hgs->FLinit.init++; | |
| 1201 hgs->FLinit.decl = 0; | |
| 1202 init->toCBuffer(buf, hgs); | |
| 1203 if (hgs->FLinit.decl > 0) | |
| 1204 buf->writebyte(';'); | |
| 1205 hgs->FLinit.decl = 0; | |
| 1206 hgs->FLinit.init--; | |
| 1207 } | |
| 1208 else | |
| 1209 buf->writebyte(';'); | |
| 1210 if (condition) | |
| 1211 { buf->writebyte(' '); | |
| 1212 condition->toCBuffer(buf, hgs); | |
| 1213 } | |
| 1214 buf->writebyte(';'); | |
| 1215 if (increment) | |
| 1216 { buf->writebyte(' '); | |
| 1217 increment->toCBuffer(buf, hgs); | |
| 1218 } | |
| 1219 buf->writebyte(')'); | |
| 1220 buf->writenl(); | |
| 1221 buf->writebyte('{'); | |
| 1222 buf->writenl(); | |
| 1223 body->toCBuffer(buf, hgs); | |
| 1224 buf->writebyte('}'); | |
| 1225 buf->writenl(); | |
| 1226 } | |
| 1227 | |
| 1228 /******************************** ForeachStatement ***************************/ | |
| 1229 | |
| 1230 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Arguments *arguments, | |
| 1231 Expression *aggr, Statement *body) | |
| 1232 : Statement(loc) | |
| 1233 { | |
| 1234 this->op = op; | |
| 1235 this->arguments = arguments; | |
| 1236 this->aggr = aggr; | |
| 1237 this->body = body; | |
| 309 | 1238 this->enclosinghandler = NULL; |
| 159 | 1239 |
| 1240 this->key = NULL; | |
| 1241 this->value = NULL; | |
| 1242 | |
| 1243 this->func = NULL; | |
| 1244 } | |
| 1245 | |
| 1246 Statement *ForeachStatement::syntaxCopy() | |
| 1247 { | |
| 1248 Arguments *args = Argument::arraySyntaxCopy(arguments); | |
| 1249 Expression *exp = aggr->syntaxCopy(); | |
| 1250 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, | |
| 1251 body ? body->syntaxCopy() : NULL); | |
| 1252 return s; | |
| 1253 } | |
| 1254 | |
| 1255 Statement *ForeachStatement::semantic(Scope *sc) | |
| 1256 { | |
| 1257 //printf("ForeachStatement::semantic() %p\n", this); | |
| 1258 ScopeDsymbol *sym; | |
| 1259 Statement *s = this; | |
| 1260 int dim = arguments->dim; | |
| 1261 int i; | |
| 1262 TypeAArray *taa = NULL; | |
| 1263 | |
| 1264 Type *tn = NULL; | |
| 1265 Type *tnv = NULL; | |
| 1266 | |
| 309 | 1267 enclosinghandler = sc->tfOfTry; |
| 159 | 1268 |
| 1269 func = sc->func; | |
| 1270 if (func->fes) | |
| 1271 func = func->fes->func; | |
| 1272 | |
| 1273 aggr = aggr->semantic(sc); | |
| 1274 aggr = resolveProperties(sc, aggr); | |
| 1275 if (!aggr->type) | |
| 1276 { | |
| 1277 error("invalid foreach aggregate %s", aggr->toChars()); | |
| 1278 return this; | |
| 1279 } | |
| 1280 | |
| 1281 inferApplyArgTypes(op, arguments, aggr); | |
| 1282 | |
| 1283 /* Check for inference errors | |
| 1284 */ | |
| 1285 if (dim != arguments->dim) | |
| 1286 { | |
| 1287 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
| 1288 error("cannot uniquely infer foreach argument types"); | |
| 1289 return this; | |
| 1290 } | |
| 1291 | |
| 1292 Type *tab = aggr->type->toBasetype(); | |
| 1293 | |
| 1294 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
| 1295 { | |
| 1296 if (dim < 1 || dim > 2) | |
| 1297 { | |
| 1298 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
| 1299 return s; | |
| 1300 } | |
| 1301 | |
| 1302 TypeTuple *tuple = (TypeTuple *)tab; | |
| 1303 Statements *statements = new Statements(); | |
| 1304 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
| 1305 size_t n; | |
| 1306 TupleExp *te = NULL; | |
| 1307 if (aggr->op == TOKtuple) // expression tuple | |
| 1308 { te = (TupleExp *)aggr; | |
| 1309 n = te->exps->dim; | |
| 1310 } | |
| 1311 else if (aggr->op == TOKtype) // type tuple | |
| 1312 { | |
| 1313 n = Argument::dim(tuple->arguments); | |
| 1314 } | |
| 1315 else | |
| 1316 assert(0); | |
| 1317 for (size_t j = 0; j < n; j++) | |
| 1318 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
| 1319 Expression *e; | |
| 1320 Type *t; | |
| 1321 if (te) | |
| 1322 e = (Expression *)te->exps->data[k]; | |
| 1323 else | |
| 1324 t = Argument::getNth(tuple->arguments, k)->type; | |
| 1325 Argument *arg = (Argument *)arguments->data[0]; | |
| 1326 Statements *st = new Statements(); | |
| 1327 | |
| 1328 if (dim == 2) | |
| 1329 { // Declare key | |
| 1330 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1331 error("no storage class for key %s", arg->ident->toChars()); | |
| 1332 TY keyty = arg->type->ty; | |
|
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1333 if (global.params.is64bit) |
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1334 { |
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1335 if (keyty != Tint32 && keyty != Tuns32 && keyty != Tint64 && keyty != Tuns64) |
|
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1336 { |
|
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|
1337 error("foreach: key type must be int, uint, long or ulong, not %s", key->type->toChars()); |
|
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1338 } |
|
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1339 } |
|
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1340 else if (keyty != Tint32 && keyty != Tuns32) |
|
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1341 { |
|
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|
1342 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
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1343 } |
| 159 | 1344 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); |
| 1345 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1346 var->storage_class |= STCconst; | |
| 1347 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1348 st->push(new ExpStatement(loc, de)); | |
| 1349 arg = (Argument *)arguments->data[1]; // value | |
| 1350 } | |
| 1351 // Declare value | |
| 1352 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1353 error("no storage class for value %s", arg->ident->toChars()); | |
| 1354 Dsymbol *var; | |
| 1355 if (te) | |
| 1356 { | |
| 1357 if (e->type->toBasetype()->ty == Tfunction && | |
| 1358 e->op == TOKvar) | |
| 1359 { VarExp *ve = (VarExp *)e; | |
| 1360 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
| 1361 } | |
| 1362 else | |
| 1363 { | |
| 1364 arg->type = e->type; | |
| 1365 Initializer *ie = new ExpInitializer(0, e); | |
| 1366 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1367 if (e->isConst()) | |
| 1368 v->storage_class |= STCconst; | |
| 1369 var = v; | |
| 1370 } | |
| 1371 } | |
| 1372 else | |
| 1373 { | |
| 1374 var = new AliasDeclaration(loc, arg->ident, t); | |
| 1375 } | |
| 1376 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1377 st->push(new ExpStatement(loc, de)); | |
| 1378 | |
| 1379 st->push(body->syntaxCopy()); | |
| 1380 s = new CompoundStatement(loc, st); | |
| 1381 s = new ScopeStatement(loc, s); | |
| 1382 statements->push(s); | |
| 1383 } | |
| 1384 | |
| 1385 s = new UnrolledLoopStatement(loc, statements); | |
| 1386 s = s->semantic(sc); | |
| 1387 return s; | |
| 1388 } | |
| 1389 | |
| 1390 for (i = 0; i < dim; i++) | |
| 1391 { Argument *arg = (Argument *)arguments->data[i]; | |
| 1392 if (!arg->type) | |
| 1393 { | |
| 1394 error("cannot infer type for %s", arg->ident->toChars()); | |
| 1395 return this; | |
| 1396 } | |
| 1397 } | |
| 1398 | |
| 1399 sym = new ScopeDsymbol(); | |
| 1400 sym->parent = sc->scopesym; | |
| 1401 sc = sc->push(sym); | |
| 1402 | |
| 1403 sc->noctor++; | |
| 1404 | |
| 1405 switch (tab->ty) | |
| 1406 { | |
| 1407 case Tarray: | |
| 1408 case Tsarray: | |
| 1409 if (dim < 1 || dim > 2) | |
| 1410 { | |
| 1411 error("only one or two arguments for array foreach"); | |
| 1412 break; | |
| 1413 } | |
| 1414 | |
| 1415 /* Look for special case of parsing char types out of char type | |
| 1416 * array. | |
| 1417 */ | |
| 1418 tn = tab->nextOf()->toBasetype(); | |
| 1419 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) | |
| 1420 { Argument *arg; | |
| 1421 | |
| 1422 i = (dim == 1) ? 0 : 1; // index of value | |
| 1423 arg = (Argument *)arguments->data[i]; | |
| 1424 arg->type = arg->type->semantic(loc, sc); | |
| 1425 tnv = arg->type->toBasetype(); | |
| 1426 if (tnv->ty != tn->ty && | |
| 1427 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
| 1428 { | |
| 1429 if (arg->storageClass & STCref) | |
| 1430 error("foreach: value of UTF conversion cannot be ref"); | |
| 1431 if (dim == 2) | |
| 1432 { arg = (Argument *)arguments->data[0]; | |
| 1433 if (arg->storageClass & STCref) | |
| 1434 error("foreach: key cannot be ref"); | |
| 1435 } | |
| 1436 goto Lapply; | |
| 1437 } | |
| 1438 } | |
| 1439 | |
| 1440 for (i = 0; i < dim; i++) | |
| 1441 { // Declare args | |
| 1442 Argument *arg = (Argument *)arguments->data[i]; | |
| 1443 VarDeclaration *var; | |
| 1444 | |
| 1445 var = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
| 1446 var->storage_class |= STCforeach; | |
| 1447 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
| 1448 #if 1 | |
| 1449 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1450 de->semantic(sc); | |
| 1451 #else | |
| 1452 var->semantic(sc); | |
| 1453 if (!sc->insert(var)) | |
| 1454 error("%s already defined", var->ident->toChars()); | |
| 1455 #endif | |
| 1456 if (dim == 2 && i == 0) | |
| 1457 key = var; | |
| 1458 else | |
| 1459 value = var; | |
| 1460 } | |
| 1461 | |
| 1462 sc->sbreak = this; | |
| 1463 sc->scontinue = this; | |
| 1464 body = body->semantic(sc); | |
| 1465 | |
| 1466 if (!value->type->equals(tab->next)) | |
| 1467 { | |
| 1468 if (aggr->op == TOKstring) | |
| 1469 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
| 1470 else | |
| 1471 error("foreach: %s is not an array of %s", tab->toChars(), value->type->toChars()); | |
| 1472 } | |
| 1473 | |
|
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1474 if (key) |
|
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1475 { |
|
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|
1476 if (global.params.is64bit) |
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1477 { |
|
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1478 if (key->type->ty != Tint32 && key->type->ty != Tuns32 && key->type->ty != Tint64 && key->type->ty != Tuns64) |
|
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1479 { |
|
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1480 error("foreach: key type must be int, uint, long or ulong, not %s", key->type->toChars()); |
|
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1481 } |
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1482 } |
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1483 else if (key->type->ty != Tint32 && key->type->ty != Tuns32) |
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1484 { |
|
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|
1485 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
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|
1486 } |
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|
1487 } |
| 159 | 1488 |
| 1489 if (key && key->storage_class & (STCout | STCref)) | |
| 1490 error("foreach: key cannot be out or ref"); | |
| 1491 break; | |
| 1492 | |
| 1493 case Taarray: | |
| 1494 taa = (TypeAArray *)tab; | |
| 1495 if (dim < 1 || dim > 2) | |
| 1496 { | |
| 1497 error("only one or two arguments for associative array foreach"); | |
| 1498 break; | |
| 1499 } | |
| 1500 if (op == TOKforeach_reverse) | |
| 1501 { | |
| 1502 error("no reverse iteration on associative arrays"); | |
| 1503 } | |
| 1504 goto Lapply; | |
| 1505 | |
| 1506 case Tclass: | |
| 1507 case Tstruct: | |
| 1508 case Tdelegate: | |
| 1509 Lapply: | |
| 1510 { FuncDeclaration *fdapply; | |
| 1511 Arguments *args; | |
| 1512 Expression *ec; | |
| 1513 Expression *e; | |
| 1514 FuncLiteralDeclaration *fld; | |
| 1515 Argument *a; | |
| 1516 Type *t; | |
| 1517 Expression *flde; | |
| 1518 Identifier *id; | |
| 1519 Type *tret; | |
| 1520 | |
| 1521 tret = func->type->nextOf(); | |
| 1522 | |
| 1523 // Need a variable to hold value from any return statements in body. | |
| 1524 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1525 { VarDeclaration *v; | |
| 1526 | |
| 1527 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 1528 v->noauto = 1; | |
| 1529 v->semantic(sc); | |
| 1530 if (!sc->insert(v)) | |
| 1531 assert(0); | |
| 1532 v->parent = sc->func; | |
| 1533 sc->func->vresult = v; | |
| 1534 } | |
| 1535 | |
| 1536 /* Turn body into the function literal: | |
| 1537 * int delegate(ref T arg) { body } | |
| 1538 */ | |
| 1539 args = new Arguments(); | |
| 1540 for (i = 0; i < dim; i++) | |
| 1541 { Argument *arg = (Argument *)arguments->data[i]; | |
| 1542 | |
| 1543 arg->type = arg->type->semantic(loc, sc); | |
| 1544 if (arg->storageClass & STCref) | |
| 1545 id = arg->ident; | |
| 1546 else | |
| 1547 { // Make a copy of the ref argument so it isn't | |
| 1548 // a reference. | |
| 1549 VarDeclaration *v; | |
| 1550 Initializer *ie; | |
| 1551 char applyArg[10 + sizeof(i)*3 + 1]; | |
| 1552 | |
| 1553 sprintf(applyArg, "__applyArg%d", i); | |
| 1554 id = Lexer::idPool(applyArg); | |
| 1555 | |
| 1556 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1557 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1558 s = new DeclarationStatement(0, v); | |
| 1559 body = new CompoundStatement(loc, s, body); | |
| 1560 } | |
| 1561 a = new Argument(STCref, arg->type, id, NULL); | |
| 1562 args->push(a); | |
| 1563 } | |
| 1564 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1565 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1566 fld->fbody = body; | |
| 1567 flde = new FuncExp(loc, fld); | |
| 1568 flde = flde->semantic(sc); | |
| 1569 | |
| 1570 // Resolve any forward referenced goto's | |
| 1571 for (int i = 0; i < gotos.dim; i++) | |
| 1572 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1573 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1574 | |
| 1575 if (!gs->label->statement) | |
| 1576 { // 'Promote' it to this scope, and replace with a return | |
| 1577 cases.push(gs); | |
| 1578 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1579 cs->statements->data[0] = (void *)s; | |
| 1580 } | |
| 1581 } | |
| 1582 | |
| 1583 if (tab->ty == Taarray) | |
| 1584 { | |
| 1585 // Check types | |
| 1586 Argument *arg = (Argument *)arguments->data[0]; | |
| 1587 if (dim == 2) | |
| 1588 { | |
| 1589 if (arg->storageClass & STCref) | |
| 1590 error("foreach: index cannot be ref"); | |
| 1591 if (!arg->type->equals(taa->index)) | |
| 1592 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
| 1593 arg = (Argument *)arguments->data[1]; | |
| 1594 } | |
| 1595 if (!arg->type->equals(taa->nextOf())) | |
| 1596 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1597 | |
| 1598 /* Call: | |
| 1599 * _aaApply(aggr, keysize, flde) | |
| 1600 */ | |
|
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1601 //LLVMDC: Build arguments. |
|
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1602 Arguments* args = new Arguments; |
|
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1603 args->push(new Argument(STCin, Type::topaque->pointerTo(), NULL, NULL)); |
|
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1604 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
|
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1605 if (dim == 2) { |
|
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1606 Arguments* dgargs = new Arguments; |
|
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1607 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1608 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1609 TypeDelegate* dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
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1610 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1611 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply2"); |
|
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1612 } else { |
|
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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 TypeDelegate* dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
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1616 args->push(new Argument(STCin, dgty, NULL, NULL)); |
|
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1617 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply"); |
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1618 } |
| 159 | 1619 ec = new VarExp(0, fdapply); |
| 1620 Expressions *exps = new Expressions(); | |
| 1621 exps->push(aggr); | |
| 1622 size_t keysize = taa->key->size(); | |
| 1623 keysize = (keysize + 3) & ~3; | |
| 1624 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); | |
| 1625 exps->push(flde); | |
| 1626 e = new CallExp(loc, ec, exps); | |
| 1627 e->type = Type::tindex; // don't run semantic() on e | |
| 1628 } | |
| 1629 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1630 { | |
| 1631 /* Call: | |
| 1632 * _aApply(aggr, flde) | |
| 1633 */ | |
| 1634 static char fntab[9][3] = | |
| 1635 { "cc","cw","cd", | |
| 1636 "wc","cc","wd", | |
| 1637 "dc","dw","dd" | |
| 1638 }; | |
| 1639 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1640 int flag; | |
| 1641 | |
| 1642 switch (tn->ty) | |
| 1643 { | |
| 1644 case Tchar: flag = 0; break; | |
| 1645 case Twchar: flag = 3; break; | |
| 1646 case Tdchar: flag = 6; break; | |
| 1647 default: assert(0); | |
| 1648 } | |
| 1649 switch (tnv->ty) | |
| 1650 { | |
| 1651 case Tchar: flag += 0; break; | |
| 1652 case Twchar: flag += 1; break; | |
| 1653 case Tdchar: flag += 2; break; | |
| 1654 default: assert(0); | |
| 1655 } | |
| 1656 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
| 1657 int j = sprintf(fdname, "_aApply%s%.*s%d", r, 2, fntab[flag], dim); | |
| 1658 assert(j < sizeof(fdname)); | |
|
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|
1659 //LLVMDC: Build arguments. |
|
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|
1660 Arguments* args = new Arguments; |
|
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|
1661 args->push(new Argument(STCin, Type::topaque->arrayOf(), NULL, NULL)); |
|
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|
1662 if (dim == 2) { |
|
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1663 Arguments* dgargs = new Arguments; |
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1664 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1665 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1666 TypeDelegate* dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1667 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1668 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1669 } else { |
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1670 Arguments* dgargs = new Arguments; |
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1671 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1672 TypeDelegate* dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1673 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1674 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1675 } |
| 159 | 1676 |
| 1677 ec = new VarExp(0, fdapply); | |
| 1678 Expressions *exps = new Expressions(); | |
| 1679 if (tab->ty == Tsarray) | |
| 1680 aggr = aggr->castTo(sc, tn->arrayOf()); | |
| 1681 exps->push(aggr); | |
| 1682 exps->push(flde); | |
| 1683 e = new CallExp(loc, ec, exps); | |
| 1684 e->type = Type::tindex; // don't run semantic() on e | |
| 1685 } | |
| 1686 else if (tab->ty == Tdelegate) | |
| 1687 { | |
| 1688 /* Call: | |
| 1689 * aggr(flde) | |
| 1690 */ | |
| 1691 Expressions *exps = new Expressions(); | |
| 1692 exps->push(flde); | |
| 1693 e = new CallExp(loc, aggr, exps); | |
| 1694 e = e->semantic(sc); | |
| 1695 if (e->type != Type::tint32) | |
| 1696 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1697 } | |
| 1698 else | |
| 1699 { | |
| 1700 /* Call: | |
| 1701 * aggr.apply(flde) | |
| 1702 */ | |
| 1703 ec = new DotIdExp(loc, aggr, | |
| 1704 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1705 : Id::apply); | |
| 1706 Expressions *exps = new Expressions(); | |
| 1707 exps->push(flde); | |
| 1708 e = new CallExp(loc, ec, exps); | |
| 1709 e = e->semantic(sc); | |
| 1710 if (e->type != Type::tint32) | |
| 1711 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1712 } | |
| 1713 | |
| 1714 if (!cases.dim) | |
| 1715 // Easy case, a clean exit from the loop | |
| 1716 s = new ExpStatement(loc, e); | |
| 1717 else | |
| 1718 { // Construct a switch statement around the return value | |
| 1719 // of the apply function. | |
| 1720 Statements *a = new Statements(); | |
| 1721 | |
| 1722 // default: break; takes care of cases 0 and 1 | |
| 1723 s = new BreakStatement(0, NULL); | |
| 1724 s = new DefaultStatement(0, s); | |
| 1725 a->push(s); | |
| 1726 | |
| 1727 // cases 2... | |
| 1728 for (int i = 0; i < cases.dim; i++) | |
| 1729 { | |
| 1730 s = (Statement *)cases.data[i]; | |
| 1731 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1732 a->push(s); | |
| 1733 } | |
| 1734 | |
| 1735 s = new CompoundStatement(loc, a); | |
| 1736 s = new SwitchStatement(loc, e, s); | |
| 1737 s = s->semantic(sc); | |
| 1738 } | |
| 1739 break; | |
| 1740 } | |
| 1741 | |
| 1742 default: | |
| 1743 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1744 break; | |
| 1745 } | |
| 1746 sc->noctor--; | |
| 1747 sc->pop(); | |
| 1748 return s; | |
| 1749 } | |
| 1750 | |
| 1751 int ForeachStatement::hasBreak() | |
| 1752 { | |
| 1753 return TRUE; | |
| 1754 } | |
| 1755 | |
| 1756 int ForeachStatement::hasContinue() | |
| 1757 { | |
| 1758 return TRUE; | |
| 1759 } | |
| 1760 | |
| 1761 int ForeachStatement::usesEH() | |
| 1762 { | |
| 1763 return body->usesEH(); | |
| 1764 } | |
| 1765 | |
| 336 | 1766 int ForeachStatement::blockExit() |
| 1767 { int result = BEfallthru; | |
| 1768 | |
| 1769 if (aggr->canThrow()) | |
| 1770 result |= BEthrow; | |
| 1771 | |
| 1772 if (body) | |
| 1773 { | |
| 1774 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 1775 } | |
| 1776 return result; | |
| 1777 } | |
| 1778 | |
| 159 | 1779 int ForeachStatement::fallOffEnd() |
| 1780 { | |
| 1781 if (body) | |
| 1782 body->fallOffEnd(); | |
| 1783 return TRUE; | |
| 1784 } | |
| 1785 | |
| 1786 int ForeachStatement::comeFrom() | |
| 1787 { | |
| 1788 if (body) | |
| 1789 return body->comeFrom(); | |
| 1790 return FALSE; | |
| 1791 } | |
| 1792 | |
| 1793 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1794 { | |
| 1795 buf->writestring(Token::toChars(op)); | |
| 1796 buf->writestring(" ("); | |
| 1797 for (int i = 0; i < arguments->dim; i++) | |
| 1798 { | |
| 1799 Argument *a = (Argument *)arguments->data[i]; | |
| 1800 if (i) | |
| 1801 buf->writestring(", "); | |
| 1802 if (a->storageClass & STCref) | |
| 1803 buf->writestring((global.params.Dversion == 1) | |
| 1804 ? (char*)"inout " : (char*)"ref "); | |
| 1805 if (a->type) | |
| 1806 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1807 else | |
| 1808 buf->writestring(a->ident->toChars()); | |
| 1809 } | |
| 1810 buf->writestring("; "); | |
| 1811 aggr->toCBuffer(buf, hgs); | |
| 1812 buf->writebyte(')'); | |
| 1813 buf->writenl(); | |
| 1814 buf->writebyte('{'); | |
| 1815 buf->writenl(); | |
| 1816 if (body) | |
| 1817 body->toCBuffer(buf, hgs); | |
| 1818 buf->writebyte('}'); | |
| 1819 buf->writenl(); | |
| 1820 } | |
| 1821 | |
| 1822 /******************************** IfStatement ***************************/ | |
| 1823 | |
| 1824 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody) | |
| 1825 : Statement(loc) | |
| 1826 { | |
| 1827 this->arg = arg; | |
| 1828 this->condition = condition; | |
| 1829 this->ifbody = ifbody; | |
| 1830 this->elsebody = elsebody; | |
| 1831 this->match = NULL; | |
| 1832 } | |
| 1833 | |
| 1834 Statement *IfStatement::syntaxCopy() | |
| 1835 { | |
| 1836 Statement *i = NULL; | |
| 1837 if (ifbody) | |
| 1838 i = ifbody->syntaxCopy(); | |
| 1839 | |
| 1840 Statement *e = NULL; | |
| 1841 if (elsebody) | |
| 1842 e = elsebody->syntaxCopy(); | |
| 1843 | |
| 1844 Argument *a = arg ? arg->syntaxCopy() : NULL; | |
| 1845 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); | |
| 1846 return s; | |
| 1847 } | |
| 1848 | |
| 1849 Statement *IfStatement::semantic(Scope *sc) | |
| 1850 { | |
| 1851 condition = condition->semantic(sc); | |
| 1852 condition = resolveProperties(sc, condition); | |
| 1853 condition = condition->checkToBoolean(); | |
| 1854 | |
| 1855 // If we can short-circuit evaluate the if statement, don't do the | |
| 1856 // semantic analysis of the skipped code. | |
| 1857 // This feature allows a limited form of conditional compilation. | |
| 1858 condition = condition->optimize(WANTflags); | |
| 1859 | |
| 1860 // Evaluate at runtime | |
| 1861 unsigned cs0 = sc->callSuper; | |
| 1862 unsigned cs1; | |
| 1863 | |
| 1864 Scope *scd; | |
| 1865 if (arg) | |
| 1866 { /* Declare arg, which we will set to be the | |
| 1867 * result of condition. | |
| 1868 */ | |
| 1869 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1870 sym->parent = sc->scopesym; | |
| 1871 scd = sc->push(sym); | |
| 1872 | |
| 1873 Type *t = arg->type ? arg->type : condition->type; | |
| 1874 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
| 1875 match->noauto = 1; | |
| 1876 match->semantic(scd); | |
| 1877 if (!scd->insert(match)) | |
| 1878 assert(0); | |
| 1879 match->parent = sc->func; | |
| 1880 | |
| 1881 /* Generate: | |
| 1882 * (arg = condition) | |
| 1883 */ | |
| 1884 VarExp *v = new VarExp(0, match); | |
| 1885 condition = new AssignExp(loc, v, condition); | |
| 1886 condition = condition->semantic(scd); | |
| 1887 } | |
| 1888 else | |
| 1889 scd = sc->push(); | |
| 1890 ifbody = ifbody->semantic(scd); | |
| 1891 scd->pop(); | |
| 1892 | |
| 1893 cs1 = sc->callSuper; | |
| 1894 sc->callSuper = cs0; | |
| 1895 if (elsebody) | |
| 1896 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 1897 sc->mergeCallSuper(loc, cs1); | |
| 1898 | |
| 1899 return this; | |
| 1900 } | |
| 1901 | |
| 1902 int IfStatement::usesEH() | |
| 1903 { | |
| 1904 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 1905 } | |
| 1906 | |
| 336 | 1907 int IfStatement::blockExit() |
| 1908 { | |
| 1909 //printf("IfStatement::blockExit(%p)\n", this); | |
| 1910 | |
| 1911 int result = BEnone; | |
| 1912 if (condition->canThrow()) | |
| 1913 result |= BEthrow; | |
| 1914 if (condition->isBool(TRUE)) | |
| 1915 { | |
| 1916 if (ifbody) | |
| 1917 result |= ifbody->blockExit(); | |
| 1918 else | |
| 1919 result |= BEfallthru; | |
| 1920 } | |
| 1921 else if (condition->isBool(FALSE)) | |
| 1922 { | |
| 1923 if (elsebody) | |
| 1924 result |= elsebody->blockExit(); | |
| 1925 else | |
| 1926 result |= BEfallthru; | |
| 1927 } | |
| 1928 else | |
| 1929 { | |
| 1930 if (ifbody) | |
| 1931 result |= ifbody->blockExit(); | |
| 1932 else | |
| 1933 result |= BEfallthru; | |
| 1934 if (elsebody) | |
| 1935 result |= elsebody->blockExit(); | |
| 1936 else | |
| 1937 result |= BEfallthru; | |
| 1938 } | |
| 1939 //printf("IfStatement::blockExit(%p) = x%x\n", this, result); | |
| 1940 return result; | |
| 1941 } | |
| 1942 | |
| 159 | 1943 int IfStatement::fallOffEnd() |
| 1944 { | |
| 1945 if (!ifbody || ifbody->fallOffEnd() || | |
| 1946 !elsebody || elsebody->fallOffEnd()) | |
| 1947 return TRUE; | |
| 1948 return FALSE; | |
| 1949 } | |
| 1950 | |
| 1951 | |
| 1952 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1953 { | |
| 1954 buf->writestring("if ("); | |
| 1955 if (arg) | |
| 1956 { | |
| 1957 if (arg->type) | |
| 1958 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 1959 else | |
| 1960 buf->writestring(arg->ident->toChars()); | |
| 1961 buf->writebyte(';'); | |
| 1962 } | |
| 1963 condition->toCBuffer(buf, hgs); | |
| 1964 buf->writebyte(')'); | |
| 1965 buf->writenl(); | |
| 1966 ifbody->toCBuffer(buf, hgs); | |
| 1967 if (elsebody) | |
| 1968 { buf->writestring("else"); | |
| 1969 buf->writenl(); | |
| 1970 elsebody->toCBuffer(buf, hgs); | |
| 1971 } | |
| 1972 } | |
| 1973 | |
| 1974 /******************************** ConditionalStatement ***************************/ | |
| 1975 | |
| 1976 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 1977 : Statement(loc) | |
| 1978 { | |
| 1979 this->condition = condition; | |
| 1980 this->ifbody = ifbody; | |
| 1981 this->elsebody = elsebody; | |
| 1982 } | |
| 1983 | |
| 1984 Statement *ConditionalStatement::syntaxCopy() | |
| 1985 { | |
| 1986 Statement *e = NULL; | |
| 1987 if (elsebody) | |
| 1988 e = elsebody->syntaxCopy(); | |
| 1989 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 1990 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 1991 return s; | |
| 1992 } | |
| 1993 | |
| 1994 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 1995 { | |
| 1996 //printf("ConditionalStatement::semantic()\n"); | |
| 1997 | |
| 1998 // If we can short-circuit evaluate the if statement, don't do the | |
| 1999 // semantic analysis of the skipped code. | |
| 2000 // This feature allows a limited form of conditional compilation. | |
| 2001 if (condition->include(sc, NULL)) | |
| 2002 { | |
| 2003 ifbody = ifbody->semantic(sc); | |
| 2004 return ifbody; | |
| 2005 } | |
| 2006 else | |
| 2007 { | |
| 2008 if (elsebody) | |
| 2009 elsebody = elsebody->semantic(sc); | |
| 2010 return elsebody; | |
| 2011 } | |
| 2012 } | |
| 2013 | |
| 2014 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 2015 { | |
| 2016 Statement *s; | |
| 2017 | |
| 2018 if (condition->include(sc, NULL)) | |
| 2019 s = ifbody; | |
| 2020 else | |
| 2021 s = elsebody; | |
| 2022 | |
| 2023 Statements *a = new Statements(); | |
| 2024 a->push(s); | |
| 2025 return a; | |
| 2026 } | |
| 2027 | |
| 2028 int ConditionalStatement::usesEH() | |
| 2029 { | |
| 2030 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2031 } | |
| 2032 | |
| 2033 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2034 { | |
| 2035 condition->toCBuffer(buf, hgs); | |
| 2036 buf->writenl(); | |
| 336 | 2037 buf->writeByte('{'); |
| 2038 buf->writenl(); | |
| 159 | 2039 if (ifbody) |
| 2040 ifbody->toCBuffer(buf, hgs); | |
| 336 | 2041 buf->writeByte('}'); |
| 2042 buf->writenl(); | |
| 159 | 2043 if (elsebody) |
| 2044 { | |
| 2045 buf->writestring("else"); | |
| 2046 buf->writenl(); | |
| 336 | 2047 buf->writeByte('{'); |
| 2048 buf->writenl(); | |
| 159 | 2049 elsebody->toCBuffer(buf, hgs); |
| 336 | 2050 buf->writeByte('}'); |
| 2051 buf->writenl(); | |
| 159 | 2052 } |
| 2053 buf->writenl(); | |
| 2054 } | |
| 2055 | |
| 2056 | |
| 2057 /******************************** PragmaStatement ***************************/ | |
| 2058 | |
| 2059 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 2060 : Statement(loc) | |
| 2061 { | |
| 2062 this->ident = ident; | |
| 2063 this->args = args; | |
| 2064 this->body = body; | |
| 2065 } | |
| 2066 | |
| 2067 Statement *PragmaStatement::syntaxCopy() | |
| 2068 { | |
| 2069 Statement *b = NULL; | |
| 2070 if (body) | |
| 2071 b = body->syntaxCopy(); | |
| 2072 PragmaStatement *s = new PragmaStatement(loc, | |
| 2073 ident, Expression::arraySyntaxCopy(args), b); | |
| 2074 return s; | |
| 2075 } | |
| 2076 | |
| 2077 Statement *PragmaStatement::semantic(Scope *sc) | |
| 2078 { // Should be merged with PragmaDeclaration | |
| 2079 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 2080 //printf("body = %p\n", body); | |
| 2081 if (ident == Id::msg) | |
| 2082 { | |
| 2083 if (args) | |
| 2084 { | |
| 2085 for (size_t i = 0; i < args->dim; i++) | |
| 2086 { | |
| 2087 Expression *e = (Expression *)args->data[i]; | |
| 2088 | |
| 2089 e = e->semantic(sc); | |
| 2090 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2091 if (e->op == TOKstring) | |
| 2092 { | |
| 2093 StringExp *se = (StringExp *)e; | |
| 2094 fprintf(stdmsg, "%.*s", (int)se->len, se->string); | |
| 2095 } | |
| 2096 else | |
| 2097 error("string expected for message, not '%s'", e->toChars()); | |
| 2098 } | |
| 2099 fprintf(stdmsg, "\n"); | |
| 2100 } | |
| 2101 } | |
| 2102 else if (ident == Id::lib) | |
| 2103 { | |
| 2104 if (!args || args->dim != 1) | |
| 2105 error("string expected for library name"); | |
| 2106 else | |
| 2107 { | |
| 2108 Expression *e = (Expression *)args->data[0]; | |
| 2109 | |
| 2110 e = e->semantic(sc); | |
| 2111 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2112 args->data[0] = (void *)e; | |
| 2113 if (e->op != TOKstring) | |
| 2114 error("string expected for library name, not '%s'", e->toChars()); | |
| 2115 else if (global.params.verbose) | |
| 2116 { | |
| 2117 StringExp *se = (StringExp *)e; | |
| 2118 char *name = (char *)mem.malloc(se->len + 1); | |
| 2119 memcpy(name, se->string, se->len); | |
| 2120 name[se->len] = 0; | |
| 2121 printf("library %s\n", name); | |
| 2122 mem.free(name); | |
| 2123 } | |
| 2124 } | |
| 2125 } | |
| 2126 else | |
| 2127 error("unrecognized pragma(%s)", ident->toChars()); | |
| 2128 | |
| 2129 if (body) | |
| 2130 { | |
| 2131 body = body->semantic(sc); | |
| 2132 } | |
| 2133 return body; | |
| 2134 } | |
| 2135 | |
| 2136 int PragmaStatement::usesEH() | |
| 2137 { | |
| 2138 return body && body->usesEH(); | |
| 2139 } | |
| 2140 | |
| 336 | 2141 int PragmaStatement::blockExit() |
| 2142 { | |
| 2143 int result = BEfallthru; | |
| 2144 #if 0 // currently, no code is generated for Pragma's, so it's just fallthru | |
| 2145 if (arrayExpressionCanThrow(args)) | |
| 2146 result |= BEthrow; | |
| 2147 if (body) | |
| 2148 result |= body->blockExit(); | |
| 2149 #endif | |
| 2150 return result; | |
| 2151 } | |
| 2152 | |
| 159 | 2153 int PragmaStatement::fallOffEnd() |
| 2154 { | |
| 2155 if (body) | |
| 2156 return body->fallOffEnd(); | |
| 2157 return TRUE; | |
| 2158 } | |
| 2159 | |
| 2160 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2161 { | |
| 2162 buf->writestring("pragma ("); | |
| 2163 buf->writestring(ident->toChars()); | |
| 2164 if (args && args->dim) | |
| 2165 { | |
| 2166 buf->writestring(", "); | |
| 2167 argsToCBuffer(buf, args, hgs); | |
| 2168 } | |
| 2169 buf->writeByte(')'); | |
| 2170 if (body) | |
| 2171 { | |
| 2172 buf->writenl(); | |
| 2173 buf->writeByte('{'); | |
| 2174 buf->writenl(); | |
| 2175 | |
| 2176 body->toCBuffer(buf, hgs); | |
| 2177 | |
| 2178 buf->writeByte('}'); | |
| 2179 buf->writenl(); | |
| 2180 } | |
| 2181 else | |
| 2182 { | |
| 2183 buf->writeByte(';'); | |
| 2184 buf->writenl(); | |
| 2185 } | |
| 2186 } | |
| 2187 | |
| 2188 | |
| 2189 /******************************** StaticAssertStatement ***************************/ | |
| 2190 | |
| 2191 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 2192 : Statement(sa->loc) | |
| 2193 { | |
| 2194 this->sa = sa; | |
| 2195 } | |
| 2196 | |
| 2197 Statement *StaticAssertStatement::syntaxCopy() | |
| 2198 { | |
| 2199 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 2200 return s; | |
| 2201 } | |
| 2202 | |
| 2203 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 2204 { | |
| 2205 sa->semantic2(sc); | |
| 2206 return NULL; | |
| 2207 } | |
| 2208 | |
| 2209 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2210 { | |
| 2211 sa->toCBuffer(buf, hgs); | |
| 2212 } | |
| 2213 | |
| 2214 | |
| 2215 /******************************** SwitchStatement ***************************/ | |
| 2216 | |
| 2217 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 2218 : Statement(loc) | |
| 2219 { | |
| 2220 condition = c; | |
| 2221 body = b; | |
| 2222 sdefault = NULL; | |
| 2223 cases = NULL; | |
| 2224 hasNoDefault = 0; | |
| 2225 // LLVMDC | |
| 309 | 2226 enclosinghandler = NULL; |
| 159 | 2227 } |
| 2228 | |
| 2229 Statement *SwitchStatement::syntaxCopy() | |
| 2230 { | |
| 2231 SwitchStatement *s = new SwitchStatement(loc, | |
| 2232 condition->syntaxCopy(), body->syntaxCopy()); | |
| 2233 return s; | |
| 2234 } | |
| 2235 | |
| 2236 Statement *SwitchStatement::semantic(Scope *sc) | |
| 2237 { | |
| 2238 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 2239 assert(!cases); // ensure semantic() is only run once | |
| 2240 | |
| 309 | 2241 enclosinghandler = sc->tfOfTry; |
| 159 | 2242 |
| 2243 condition = condition->semantic(sc); | |
| 2244 condition = resolveProperties(sc, condition); | |
| 2245 if (condition->type->isString()) | |
| 2246 { | |
| 2247 // If it's not an array, cast it to one | |
| 2248 if (condition->type->ty != Tarray) | |
| 2249 { | |
| 2250 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2251 } | |
| 2252 } | |
| 2253 else | |
| 2254 { condition = condition->integralPromotions(sc); | |
| 2255 condition->checkIntegral(); | |
| 2256 } | |
| 2257 condition = condition->optimize(WANTvalue); | |
| 2258 | |
| 2259 sc = sc->push(); | |
| 2260 sc->sbreak = this; | |
| 2261 sc->sw = this; | |
| 2262 | |
| 2263 cases = new Array(); | |
| 2264 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2265 body = body->semantic(sc); | |
| 2266 sc->noctor--; | |
| 2267 | |
| 2268 // Resolve any goto case's with exp | |
| 2269 for (int i = 0; i < gotoCases.dim; i++) | |
| 2270 { | |
| 2271 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2272 | |
| 2273 if (!gcs->exp) | |
| 2274 { | |
| 2275 gcs->error("no case statement following goto case;"); | |
| 2276 break; | |
| 2277 } | |
| 2278 | |
| 2279 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2280 { | |
| 2281 if (!scx->sw) | |
| 2282 continue; | |
| 2283 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2284 { | |
| 2285 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2286 | |
| 2287 if (cs->exp->equals(gcs->exp)) | |
| 2288 { | |
| 2289 gcs->cs = cs; | |
| 2290 goto Lfoundcase; | |
| 2291 } | |
| 2292 } | |
| 2293 } | |
| 2294 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2295 | |
| 2296 Lfoundcase: | |
| 2297 ; | |
| 2298 } | |
| 2299 | |
| 2300 if (!sc->sw->sdefault) | |
| 2301 { hasNoDefault = 1; | |
| 2302 | |
| 2303 if (global.params.warnings) | |
|
215
a58d8f4b84df
[svn r231] Changed: warnings are no longer treated as an error.
lindquist
parents:
159
diff
changeset
|
2304 { warning("%s: switch statement has no default", loc.toChars()); |
| 159 | 2305 } |
| 2306 | |
| 2307 // Generate runtime error if the default is hit | |
| 2308 Statements *a = new Statements(); | |
| 2309 CompoundStatement *cs; | |
| 2310 Statement *s; | |
| 2311 | |
| 2312 if (global.params.useSwitchError) | |
| 2313 s = new SwitchErrorStatement(loc); | |
| 2314 else | |
| 2315 { Expression *e = new HaltExp(loc); | |
| 2316 s = new ExpStatement(loc, e); | |
| 2317 } | |
| 2318 | |
| 2319 a->reserve(4); | |
| 2320 a->push(body); | |
| 2321 a->push(new BreakStatement(loc, NULL)); | |
| 2322 sc->sw->sdefault = new DefaultStatement(loc, s); | |
| 2323 a->push(sc->sw->sdefault); | |
| 2324 cs = new CompoundStatement(loc, a); | |
| 2325 body = cs; | |
| 2326 } | |
| 2327 | |
| 2328 sc->pop(); | |
| 2329 return this; | |
| 2330 } | |
| 2331 | |
| 2332 int SwitchStatement::hasBreak() | |
| 2333 { | |
| 2334 return TRUE; | |
| 2335 } | |
| 2336 | |
| 2337 int SwitchStatement::usesEH() | |
| 2338 { | |
| 2339 return body ? body->usesEH() : 0; | |
| 2340 } | |
| 2341 | |
| 336 | 2342 int SwitchStatement::blockExit() |
| 2343 { int result = BEnone; | |
| 2344 if (condition->canThrow()) | |
| 2345 result |= BEthrow; | |
| 2346 | |
| 2347 if (body) | |
| 2348 { result |= body->blockExit(); | |
| 2349 if (result & BEbreak) | |
| 2350 { result |= BEfallthru; | |
| 2351 result &= ~BEbreak; | |
| 2352 } | |
| 2353 } | |
| 2354 else | |
| 2355 result |= BEfallthru; | |
| 2356 | |
| 2357 return result; | |
| 2358 } | |
| 2359 | |
| 159 | 2360 int SwitchStatement::fallOffEnd() |
| 2361 { | |
| 2362 if (body) | |
| 2363 body->fallOffEnd(); | |
| 2364 return TRUE; // need to do this better | |
| 2365 } | |
| 2366 | |
| 2367 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2368 { | |
| 2369 buf->writestring("switch ("); | |
| 2370 condition->toCBuffer(buf, hgs); | |
| 2371 buf->writebyte(')'); | |
| 2372 buf->writenl(); | |
| 2373 if (body) | |
| 2374 { | |
| 2375 if (!body->isScopeStatement()) | |
| 2376 { buf->writebyte('{'); | |
| 2377 buf->writenl(); | |
| 2378 body->toCBuffer(buf, hgs); | |
| 2379 buf->writebyte('}'); | |
| 2380 buf->writenl(); | |
| 2381 } | |
| 2382 else | |
| 2383 { | |
| 2384 body->toCBuffer(buf, hgs); | |
| 2385 } | |
| 2386 } | |
| 2387 } | |
| 2388 | |
| 2389 /******************************** CaseStatement ***************************/ | |
| 2390 | |
| 2391 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2392 : Statement(loc) | |
| 2393 { | |
| 2394 this->exp = exp; | |
| 2395 this->statement = s; | |
| 2396 cblock = NULL; | |
| 2397 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
|
2398 llvmIdx = NULL; |
| 159 | 2399 } |
| 2400 | |
| 2401 Statement *CaseStatement::syntaxCopy() | |
| 2402 { | |
| 2403 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2404 return s; | |
| 2405 } | |
| 2406 | |
| 2407 Statement *CaseStatement::semantic(Scope *sc) | |
| 2408 { SwitchStatement *sw = sc->sw; | |
| 2409 | |
| 2410 //printf("CaseStatement::semantic() %s\n", toChars()); | |
| 2411 exp = exp->semantic(sc); | |
| 2412 if (sw) | |
| 2413 { int i; | |
| 2414 | |
| 2415 exp = exp->implicitCastTo(sc, sw->condition->type); | |
| 2416 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2417 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2418 { | |
| 2419 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2420 exp = new IntegerExp(0); | |
| 2421 } | |
| 2422 | |
| 2423 for (i = 0; i < sw->cases->dim; i++) | |
| 2424 { | |
| 2425 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2426 | |
| 2427 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2428 if (cs->exp->equals(exp)) | |
| 2429 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2430 break; | |
| 2431 } | |
| 2432 } | |
| 2433 | |
| 2434 sw->cases->push(this); | |
| 2435 | |
| 2436 // Resolve any goto case's with no exp to this case statement | |
| 2437 for (i = 0; i < sw->gotoCases.dim; i++) | |
| 2438 { | |
| 2439 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2440 | |
| 2441 if (!gcs->exp) | |
| 2442 { | |
| 2443 gcs->cs = this; | |
| 2444 sw->gotoCases.remove(i); // remove from array | |
| 2445 } | |
| 2446 } | |
| 2447 } | |
| 2448 else | |
| 2449 error("case not in switch statement"); | |
| 2450 statement = statement->semantic(sc); | |
| 2451 return this; | |
| 2452 } | |
| 2453 | |
| 2454 int CaseStatement::compare(Object *obj) | |
| 2455 { | |
| 2456 // Sort cases so we can do an efficient lookup | |
| 2457 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2458 | |
| 2459 return exp->compare(cs2->exp); | |
| 2460 } | |
| 2461 | |
| 2462 int CaseStatement::usesEH() | |
| 2463 { | |
| 2464 return statement->usesEH(); | |
| 2465 } | |
| 2466 | |
| 336 | 2467 int CaseStatement::blockExit() |
| 2468 { | |
| 2469 return statement->blockExit(); | |
| 2470 } | |
| 2471 | |
| 159 | 2472 int CaseStatement::fallOffEnd() |
| 2473 { | |
| 2474 return statement->fallOffEnd(); | |
| 2475 } | |
| 2476 | |
| 2477 int CaseStatement::comeFrom() | |
| 2478 { | |
| 2479 return TRUE; | |
| 2480 } | |
| 2481 | |
| 2482 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2483 { | |
| 2484 buf->writestring("case "); | |
| 2485 exp->toCBuffer(buf, hgs); | |
| 2486 buf->writebyte(':'); | |
| 2487 buf->writenl(); | |
| 2488 statement->toCBuffer(buf, hgs); | |
| 2489 } | |
| 2490 | |
| 2491 /******************************** DefaultStatement ***************************/ | |
| 2492 | |
| 2493 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 2494 : Statement(loc) | |
| 2495 { | |
| 2496 this->statement = s; | |
| 2497 #if IN_GCC | |
| 2498 + cblock = NULL; | |
| 2499 #endif | |
| 2500 bodyBB = NULL; | |
| 2501 } | |
| 2502 | |
| 2503 Statement *DefaultStatement::syntaxCopy() | |
| 2504 { | |
| 2505 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 2506 return s; | |
| 2507 } | |
| 2508 | |
| 2509 Statement *DefaultStatement::semantic(Scope *sc) | |
| 2510 { | |
| 336 | 2511 //printf("DefaultStatement::semantic()\n"); |
| 159 | 2512 if (sc->sw) |
| 2513 { | |
| 2514 if (sc->sw->sdefault) | |
| 2515 { | |
| 2516 error("switch statement already has a default"); | |
| 2517 } | |
| 2518 sc->sw->sdefault = this; | |
| 2519 } | |
| 2520 else | |
| 2521 error("default not in switch statement"); | |
| 2522 statement = statement->semantic(sc); | |
| 2523 return this; | |
| 2524 } | |
| 2525 | |
| 2526 int DefaultStatement::usesEH() | |
| 2527 { | |
| 2528 return statement->usesEH(); | |
| 2529 } | |
| 2530 | |
| 336 | 2531 int DefaultStatement::blockExit() |
| 2532 { | |
| 2533 return statement->blockExit(); | |
| 2534 } | |
| 2535 | |
| 159 | 2536 int DefaultStatement::fallOffEnd() |
| 2537 { | |
| 2538 return statement->fallOffEnd(); | |
| 2539 } | |
| 2540 | |
| 2541 int DefaultStatement::comeFrom() | |
| 2542 { | |
| 2543 return TRUE; | |
| 2544 } | |
| 2545 | |
| 2546 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2547 { | |
| 2548 buf->writestring("default:\n"); | |
| 2549 statement->toCBuffer(buf, hgs); | |
| 2550 } | |
| 2551 | |
| 2552 /******************************** GotoDefaultStatement ***************************/ | |
| 2553 | |
| 2554 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 2555 : Statement(loc) | |
| 2556 { | |
| 2557 sw = NULL; | |
| 309 | 2558 enclosinghandler = NULL; |
| 159 | 2559 } |
| 2560 | |
| 2561 Statement *GotoDefaultStatement::syntaxCopy() | |
| 2562 { | |
| 2563 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 2564 return s; | |
| 2565 } | |
| 2566 | |
| 2567 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 2568 { | |
| 309 | 2569 enclosinghandler = sc->tfOfTry; |
| 159 | 2570 sw = sc->sw; |
| 2571 if (!sw) | |
| 2572 error("goto default not in switch statement"); | |
| 2573 return this; | |
| 2574 } | |
| 2575 | |
| 336 | 2576 int GotoDefaultStatement::blockExit() |
| 2577 { | |
| 2578 return BEgoto; | |
| 2579 } | |
| 2580 | |
| 159 | 2581 int GotoDefaultStatement::fallOffEnd() |
| 2582 { | |
| 2583 return FALSE; | |
| 2584 } | |
| 2585 | |
| 2586 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2587 { | |
| 2588 buf->writestring("goto default;\n"); | |
| 2589 } | |
| 2590 | |
| 2591 /******************************** GotoCaseStatement ***************************/ | |
| 2592 | |
| 2593 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 2594 : Statement(loc) | |
| 2595 { | |
| 2596 cs = NULL; | |
| 2597 this->exp = exp; | |
| 309 | 2598 enclosinghandler = NULL; |
| 159 | 2599 sw = NULL; |
| 2600 } | |
| 2601 | |
| 2602 Statement *GotoCaseStatement::syntaxCopy() | |
| 2603 { | |
| 2604 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 2605 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 2606 return s; | |
| 2607 } | |
| 2608 | |
| 2609 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 2610 { | |
| 309 | 2611 enclosinghandler = sc->tfOfTry; |
| 159 | 2612 if (exp) |
| 2613 exp = exp->semantic(sc); | |
| 2614 | |
| 2615 if (!sc->sw) | |
| 2616 error("goto case not in switch statement"); | |
| 2617 else | |
| 2618 { | |
| 2619 sw = sc->sw; | |
| 2620 sc->sw->gotoCases.push(this); | |
| 2621 if (exp) | |
| 2622 { | |
| 2623 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 2624 exp = exp->optimize(WANTvalue); | |
| 2625 } | |
| 2626 } | |
| 2627 return this; | |
| 2628 } | |
| 2629 | |
| 336 | 2630 int GotoCaseStatement::blockExit() |
| 2631 { | |
| 2632 return BEgoto; | |
| 2633 } | |
| 2634 | |
| 159 | 2635 int GotoCaseStatement::fallOffEnd() |
| 2636 { | |
| 2637 return FALSE; | |
| 2638 } | |
| 2639 | |
| 2640 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2641 { | |
| 2642 buf->writestring("goto case"); | |
| 2643 if (exp) | |
| 2644 { buf->writebyte(' '); | |
| 2645 exp->toCBuffer(buf, hgs); | |
| 2646 } | |
| 2647 buf->writebyte(';'); | |
| 2648 buf->writenl(); | |
| 2649 } | |
| 2650 | |
| 2651 /******************************** SwitchErrorStatement ***************************/ | |
| 2652 | |
| 2653 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 2654 : Statement(loc) | |
| 2655 { | |
| 2656 } | |
| 2657 | |
| 336 | 2658 int SwitchErrorStatement::blockExit() |
| 2659 { | |
| 2660 return BEthrow; | |
| 2661 } | |
| 2662 | |
| 159 | 2663 int SwitchErrorStatement::fallOffEnd() |
| 2664 { | |
| 2665 return FALSE; | |
| 2666 } | |
| 2667 | |
| 2668 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2669 { | |
| 2670 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 2671 buf->writenl(); | |
| 2672 } | |
| 2673 | |
| 2674 /******************************** ReturnStatement ***************************/ | |
| 2675 | |
| 2676 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 2677 : Statement(loc) | |
| 2678 { | |
| 2679 this->exp = exp; | |
| 309 | 2680 this->enclosinghandler = NULL; |
| 159 | 2681 } |
| 2682 | |
| 2683 Statement *ReturnStatement::syntaxCopy() | |
| 2684 { | |
| 2685 Expression *e = NULL; | |
| 2686 if (exp) | |
| 2687 e = exp->syntaxCopy(); | |
| 2688 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 2689 return s; | |
| 2690 } | |
| 2691 | |
| 2692 Statement *ReturnStatement::semantic(Scope *sc) | |
| 2693 { | |
| 2694 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 309 | 2695 this->enclosinghandler = sc->tfOfTry; |
| 159 | 2696 |
| 2697 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 2698 Scope *scx = sc; | |
| 2699 int implicit0 = 0; | |
| 2700 | |
| 2701 if (sc->fes) | |
| 2702 { | |
| 2703 // Find scope of function foreach is in | |
| 2704 for (; 1; scx = scx->enclosing) | |
| 2705 { | |
| 2706 assert(scx); | |
| 2707 if (scx->func != fd) | |
| 2708 { fd = scx->func; // fd is now function enclosing foreach | |
| 2709 break; | |
| 2710 } | |
| 2711 } | |
| 2712 } | |
| 2713 | |
| 2714 Type *tret = fd->type->nextOf(); | |
| 2715 if (fd->tintro) | |
| 336 | 2716 /* We'll be implicitly casting the return expression to tintro |
| 2717 */ | |
| 159 | 2718 tret = fd->tintro->nextOf(); |
| 2719 Type *tbret = NULL; | |
| 2720 | |
| 2721 if (tret) | |
| 2722 tbret = tret->toBasetype(); | |
| 2723 | |
| 2724 // main() returns 0, even if it returns void | |
| 2725 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 2726 { implicit0 = 1; | |
| 2727 exp = new IntegerExp(0); | |
| 2728 } | |
| 2729 | |
| 2730 if (sc->incontract || scx->incontract) | |
| 2731 error("return statements cannot be in contracts"); | |
| 2732 if (sc->tf || scx->tf) | |
| 2733 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); | |
| 2734 | |
| 2735 if (fd->isCtorDeclaration()) | |
| 2736 { | |
| 2737 // Constructors implicitly do: | |
| 2738 // return this; | |
| 2739 if (exp && exp->op != TOKthis) | |
| 2740 error("cannot return expression from constructor"); | |
| 2741 exp = new ThisExp(0); | |
| 2742 } | |
| 2743 | |
| 2744 if (!exp) | |
| 2745 fd->nrvo_can = 0; | |
| 2746 | |
| 2747 if (exp) | |
| 2748 { | |
| 2749 fd->hasReturnExp |= 1; | |
| 2750 | |
| 2751 exp = exp->semantic(sc); | |
| 2752 exp = resolveProperties(sc, exp); | |
| 2753 exp = exp->optimize(WANTvalue); | |
| 2754 | |
| 2755 if (fd->nrvo_can && exp->op == TOKvar) | |
| 2756 { VarExp *ve = (VarExp *)exp; | |
| 2757 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 2758 | |
| 2759 if (!v || v->isOut() || v->isRef()) | |
| 2760 fd->nrvo_can = 0; | |
| 2761 else if (fd->nrvo_var == NULL) | |
| 2762 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 2763 fd->nrvo_var = v; | |
| 2764 else | |
| 2765 fd->nrvo_can = 0; | |
| 2766 } | |
| 2767 else if (fd->nrvo_var != v) | |
| 2768 fd->nrvo_can = 0; | |
| 2769 } | |
| 2770 else | |
| 2771 fd->nrvo_can = 0; | |
| 2772 | |
| 2773 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2774 { | |
| 2775 } | |
| 2776 else if (fd->inferRetType) | |
| 2777 { | |
| 2778 if (fd->type->nextOf()) | |
| 2779 { | |
| 2780 if (!exp->type->equals(fd->type->nextOf())) | |
| 2781 error("mismatched function return type inference of %s and %s", | |
| 2782 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 2783 } | |
| 2784 else | |
| 2785 { | |
| 2786 fd->type->next = exp->type; | |
| 2787 fd->type = fd->type->semantic(loc, sc); | |
| 2788 if (!fd->tintro) | |
| 2789 { tret = fd->type->nextOf(); | |
| 2790 tbret = tret->toBasetype(); | |
| 2791 } | |
| 2792 } | |
| 2793 } | |
| 2794 else if (tbret->ty != Tvoid) | |
| 2795 { | |
| 2796 exp = exp->implicitCastTo(sc, tret); | |
| 2797 } | |
| 2798 } | |
| 2799 else if (fd->inferRetType) | |
| 2800 { | |
| 2801 if (fd->type->nextOf()) | |
| 2802 { | |
| 2803 if (fd->type->nextOf()->ty != Tvoid) | |
| 2804 error("mismatched function return type inference of void and %s", | |
| 2805 fd->type->nextOf()->toChars()); | |
| 2806 } | |
| 2807 else | |
| 2808 { | |
| 2809 fd->type->next = Type::tvoid; | |
| 2810 fd->type = fd->type->semantic(loc, sc); | |
| 2811 if (!fd->tintro) | |
| 2812 { tret = Type::tvoid; | |
| 2813 tbret = tret; | |
| 2814 } | |
| 2815 } | |
| 2816 } | |
| 2817 else if (tbret->ty != Tvoid) // if non-void return | |
| 2818 error("return expression expected"); | |
| 2819 | |
| 2820 if (sc->fes) | |
| 2821 { | |
| 2822 Statement *s; | |
| 2823 | |
| 2824 if (exp && !implicit0) | |
| 2825 { | |
| 2826 exp = exp->implicitCastTo(sc, tret); | |
| 2827 } | |
| 2828 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 2829 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 2830 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 2831 exp->op == TOKstring) | |
| 2832 { | |
| 2833 sc->fes->cases.push(this); | |
| 2834 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2835 } | |
| 2836 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 2837 { | |
| 2838 Statement *s1; | |
| 2839 Statement *s2; | |
| 2840 | |
| 2841 s = new ReturnStatement(0, NULL); | |
| 2842 sc->fes->cases.push(s); | |
| 2843 | |
| 2844 // Construct: { exp; return cases.dim + 1; } | |
| 2845 s1 = new ExpStatement(loc, exp); | |
| 2846 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2847 s = new CompoundStatement(loc, s1, s2); | |
| 2848 } | |
| 2849 else | |
| 2850 { | |
| 2851 VarExp *v; | |
| 2852 Statement *s1; | |
| 2853 Statement *s2; | |
| 2854 | |
| 2855 // Construct: return vresult; | |
| 2856 if (!fd->vresult) | |
| 2857 { VarDeclaration *v; | |
| 2858 | |
| 2859 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 2860 v->noauto = 1; | |
| 2861 v->semantic(scx); | |
| 2862 if (!scx->insert(v)) | |
| 2863 assert(0); | |
| 2864 v->parent = fd; | |
| 2865 fd->vresult = v; | |
| 2866 } | |
| 2867 | |
| 2868 v = new VarExp(0, fd->vresult); | |
| 2869 s = new ReturnStatement(0, v); | |
| 2870 sc->fes->cases.push(s); | |
| 2871 | |
| 2872 // Construct: { vresult = exp; return cases.dim + 1; } | |
| 2873 v = new VarExp(0, fd->vresult); | |
| 2874 exp = new AssignExp(loc, v, exp); | |
| 2875 exp = exp->semantic(sc); | |
| 2876 s1 = new ExpStatement(loc, exp); | |
| 2877 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2878 s = new CompoundStatement(loc, s1, s2); | |
| 2879 } | |
| 2880 return s; | |
| 2881 } | |
| 2882 | |
| 2883 if (exp) | |
| 2884 { | |
| 2885 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2886 { | |
| 2887 assert(fd->vresult); | |
| 2888 VarExp *v = new VarExp(0, fd->vresult); | |
| 2889 | |
| 2890 exp = new AssignExp(loc, v, exp); | |
| 2891 exp = exp->semantic(sc); | |
| 2892 } | |
| 2893 //exp->dump(0); | |
| 2894 //exp->print(); | |
| 2895 exp->checkEscape(); | |
| 2896 } | |
| 2897 | |
| 2898 /* BUG: need to issue an error on: | |
| 2899 * this | |
| 2900 * { if (x) return; | |
| 2901 * super(); | |
| 2902 * } | |
| 2903 */ | |
| 2904 | |
| 2905 if (sc->callSuper & CSXany_ctor && | |
| 2906 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 2907 error("return without calling constructor"); | |
| 2908 | |
| 2909 sc->callSuper |= CSXreturn; | |
| 2910 | |
| 2911 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 2912 if (fd->returnLabel) | |
| 2913 { | |
| 2914 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 2915 | |
| 2916 gs->label = fd->returnLabel; | |
| 2917 if (exp) | |
| 2918 { Statement *s; | |
| 2919 | |
| 2920 s = new ExpStatement(0, exp); | |
| 2921 return new CompoundStatement(loc, s, gs); | |
| 2922 } | |
| 2923 return gs; | |
| 2924 } | |
| 2925 | |
| 2926 if (exp && tbret->ty == Tvoid && !fd->isMain()) | |
| 336 | 2927 { |
| 2928 /* Replace: | |
| 2929 * return exp; | |
| 2930 * with: | |
| 2931 * exp; return; | |
| 2932 */ | |
| 2933 Statement *s = new ExpStatement(loc, exp); | |
| 159 | 2934 loc = 0; |
| 2935 exp = NULL; | |
| 2936 return new CompoundStatement(loc, s, this); | |
| 2937 } | |
| 2938 | |
| 2939 return this; | |
| 2940 } | |
| 2941 | |
| 336 | 2942 int ReturnStatement::blockExit() |
| 2943 { int result = BEreturn; | |
| 2944 | |
| 2945 if (exp && exp->canThrow()) | |
| 2946 result |= BEthrow; | |
| 2947 return result; | |
| 2948 } | |
| 2949 | |
| 159 | 2950 int ReturnStatement::fallOffEnd() |
| 2951 { | |
| 2952 return FALSE; | |
| 2953 } | |
| 2954 | |
| 2955 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2956 { | |
| 2957 buf->printf("return "); | |
| 2958 if (exp) | |
| 2959 exp->toCBuffer(buf, hgs); | |
| 2960 buf->writeByte(';'); | |
| 2961 buf->writenl(); | |
| 2962 } | |
| 2963 | |
| 2964 /******************************** BreakStatement ***************************/ | |
| 2965 | |
| 2966 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 2967 : Statement(loc) | |
| 2968 { | |
| 2969 this->ident = ident; | |
| 309 | 2970 this->enclosinghandler = NULL; |
| 159 | 2971 } |
| 2972 | |
| 2973 Statement *BreakStatement::syntaxCopy() | |
| 2974 { | |
| 2975 BreakStatement *s = new BreakStatement(loc, ident); | |
| 2976 return s; | |
| 2977 } | |
| 2978 | |
| 2979 Statement *BreakStatement::semantic(Scope *sc) | |
| 2980 { | |
| 336 | 2981 //printf("BreakStatement::semantic()\n"); |
| 309 | 2982 enclosinghandler = sc->tfOfTry; |
| 159 | 2983 // If: |
| 2984 // break Identifier; | |
| 2985 if (ident) | |
| 2986 { | |
| 2987 Scope *scx; | |
| 2988 FuncDeclaration *thisfunc = sc->func; | |
| 2989 | |
| 2990 for (scx = sc; scx; scx = scx->enclosing) | |
| 2991 { | |
| 2992 LabelStatement *ls; | |
| 2993 | |
| 2994 if (scx->func != thisfunc) // if in enclosing function | |
| 2995 { | |
| 2996 if (sc->fes) // if this is the body of a foreach | |
| 2997 { | |
| 2998 /* Post this statement to the fes, and replace | |
| 2999 * it with a return value that caller will put into | |
| 3000 * a switch. Caller will figure out where the break | |
| 3001 * label actually is. | |
| 3002 * Case numbers start with 2, not 0, as 0 is continue | |
| 3003 * and 1 is break. | |
| 3004 */ | |
| 3005 Statement *s; | |
| 3006 sc->fes->cases.push(this); | |
| 3007 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3008 return s; | |
| 3009 } | |
| 3010 break; // can't break to it | |
| 3011 } | |
| 3012 | |
| 3013 ls = scx->slabel; | |
| 3014 if (ls && ls->ident == ident) | |
| 3015 { | |
| 3016 Statement *s = ls->statement; | |
| 3017 | |
| 3018 if (!s->hasBreak()) | |
| 3019 error("label '%s' has no break", ident->toChars()); | |
| 3020 if (ls->tf != sc->tf) | |
| 3021 error("cannot break out of finally block"); | |
| 3022 | |
| 3023 this->target = ls; | |
| 3024 return this; | |
| 3025 } | |
| 3026 } | |
| 3027 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 3028 } | |
| 3029 else if (!sc->sbreak) | |
| 3030 { | |
| 3031 if (sc->fes) | |
| 3032 { Statement *s; | |
| 3033 | |
| 3034 // Replace break; with return 1; | |
| 3035 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 3036 return s; | |
| 3037 } | |
| 3038 error("break is not inside a loop or switch"); | |
| 3039 } | |
| 3040 return this; | |
| 3041 } | |
| 3042 | |
| 336 | 3043 int BreakStatement::blockExit() |
| 3044 { | |
| 3045 //printf("BreakStatement::blockExit(%p) = x%x\n", this, ident ? BEgoto : BEbreak); | |
| 3046 return ident ? BEgoto : BEbreak; | |
| 3047 } | |
| 3048 | |
| 159 | 3049 int BreakStatement::fallOffEnd() |
| 3050 { | |
| 3051 return FALSE; | |
| 3052 } | |
| 3053 | |
| 3054 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3055 { | |
| 3056 buf->writestring("break"); | |
| 3057 if (ident) | |
| 3058 { buf->writebyte(' '); | |
| 3059 buf->writestring(ident->toChars()); | |
| 3060 } | |
| 3061 buf->writebyte(';'); | |
| 3062 buf->writenl(); | |
| 3063 } | |
| 3064 | |
| 3065 /******************************** ContinueStatement ***************************/ | |
| 3066 | |
| 3067 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 3068 : Statement(loc) | |
| 3069 { | |
| 3070 this->ident = ident; | |
| 309 | 3071 this->enclosinghandler = NULL; |
| 159 | 3072 } |
| 3073 | |
| 3074 Statement *ContinueStatement::syntaxCopy() | |
| 3075 { | |
| 3076 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 3077 return s; | |
| 3078 } | |
| 3079 | |
| 3080 Statement *ContinueStatement::semantic(Scope *sc) | |
| 3081 { | |
| 309 | 3082 enclosinghandler = sc->tfOfTry; |
| 159 | 3083 //printf("ContinueStatement::semantic() %p\n", this); |
| 3084 if (ident) | |
| 3085 { | |
| 3086 Scope *scx; | |
| 3087 FuncDeclaration *thisfunc = sc->func; | |
| 3088 | |
| 3089 for (scx = sc; scx; scx = scx->enclosing) | |
| 3090 { | |
| 3091 LabelStatement *ls; | |
| 3092 | |
| 3093 if (scx->func != thisfunc) // if in enclosing function | |
| 3094 { | |
| 3095 if (sc->fes) // if this is the body of a foreach | |
| 3096 { | |
| 3097 for (; scx; scx = scx->enclosing) | |
| 3098 { | |
| 3099 ls = scx->slabel; | |
| 3100 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 3101 { | |
| 3102 // Replace continue ident; with return 0; | |
| 3103 return new ReturnStatement(0, new IntegerExp(0)); | |
| 3104 } | |
| 3105 } | |
| 3106 | |
| 3107 /* Post this statement to the fes, and replace | |
| 3108 * it with a return value that caller will put into | |
| 3109 * a switch. Caller will figure out where the break | |
| 3110 * label actually is. | |
| 3111 * Case numbers start with 2, not 0, as 0 is continue | |
| 3112 * and 1 is break. | |
| 3113 */ | |
| 3114 Statement *s; | |
| 3115 sc->fes->cases.push(this); | |
| 3116 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3117 return s; | |
| 3118 } | |
| 3119 break; // can't continue to it | |
| 3120 } | |
| 3121 | |
| 3122 ls = scx->slabel; | |
| 3123 if (ls && ls->ident == ident) | |
| 3124 { | |
| 3125 Statement *s = ls->statement; | |
| 3126 | |
| 3127 if (!s->hasContinue()) | |
| 3128 error("label '%s' has no continue", ident->toChars()); | |
| 3129 if (ls->tf != sc->tf) | |
| 3130 error("cannot continue out of finally block"); | |
| 3131 | |
| 3132 this->target = ls; | |
| 3133 return this; | |
| 3134 } | |
| 3135 } | |
| 3136 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 3137 } | |
| 3138 else if (!sc->scontinue) | |
| 3139 { | |
| 3140 if (sc->fes) | |
| 3141 { Statement *s; | |
| 3142 | |
| 3143 // Replace continue; with return 0; | |
| 3144 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 3145 return s; | |
| 3146 } | |
| 3147 error("continue is not inside a loop"); | |
| 3148 } | |
| 3149 return this; | |
| 3150 } | |
| 3151 | |
| 336 | 3152 int ContinueStatement::blockExit() |
| 3153 { | |
| 3154 return ident ? BEgoto : BEcontinue; | |
| 3155 } | |
| 3156 | |
| 159 | 3157 int ContinueStatement::fallOffEnd() |
| 3158 { | |
| 3159 return FALSE; | |
| 3160 } | |
| 3161 | |
| 3162 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3163 { | |
| 3164 buf->writestring("continue"); | |
| 3165 if (ident) | |
| 3166 { buf->writebyte(' '); | |
| 3167 buf->writestring(ident->toChars()); | |
| 3168 } | |
| 3169 buf->writebyte(';'); | |
| 3170 buf->writenl(); | |
| 3171 } | |
| 3172 | |
| 3173 /******************************** SynchronizedStatement ***************************/ | |
| 3174 | |
| 3175 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 3176 : Statement(loc) | |
| 3177 { | |
| 3178 this->exp = exp; | |
| 3179 this->body = body; | |
| 3180 this->esync = NULL; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
3181 this->enclosinghandler = NULL; |
| 309 | 3182 // LLVMDC |
| 3183 this->llsync = NULL; | |
| 159 | 3184 } |
| 3185 | |
| 3186 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 3187 : Statement(loc) | |
| 3188 { | |
| 3189 this->exp = NULL; | |
| 3190 this->body = body; | |
| 3191 this->esync = esync; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
3192 this->enclosinghandler = NULL; |
| 309 | 3193 // LLVMDC |
| 3194 this->llsync = NULL; | |
| 159 | 3195 } |
| 3196 | |
| 3197 Statement *SynchronizedStatement::syntaxCopy() | |
| 3198 { | |
| 3199 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3200 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 3201 return s; | |
| 3202 } | |
| 3203 | |
| 3204 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 3205 { | |
| 3206 if (exp) | |
| 3207 { ClassDeclaration *cd; | |
| 3208 | |
| 3209 exp = exp->semantic(sc); | |
| 3210 exp = resolveProperties(sc, exp); | |
| 3211 cd = exp->type->isClassHandle(); | |
| 3212 if (!cd) | |
| 3213 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 3214 else if (cd->isInterfaceDeclaration()) | |
| 3215 { Type *t = new TypeIdentifier(0, Id::Object); | |
| 3216 | |
| 3217 t = t->semantic(0, sc); | |
| 3218 exp = new CastExp(loc, exp, t); | |
| 3219 exp = exp->semantic(sc); | |
| 3220 } | |
| 3221 } | |
| 3222 if (body) | |
| 309 | 3223 { |
| 3224 enclosinghandler = sc->tfOfTry; | |
| 3225 sc->tfOfTry = new EnclosingSynchro(this); | |
| 3226 body = body->semantic(sc); | |
| 3227 sc->tfOfTry = enclosinghandler; | |
| 3228 } | |
| 159 | 3229 return this; |
| 3230 } | |
| 3231 | |
| 3232 int SynchronizedStatement::hasBreak() | |
| 3233 { | |
| 3234 return FALSE; //TRUE; | |
| 3235 } | |
| 3236 | |
| 3237 int SynchronizedStatement::hasContinue() | |
| 3238 { | |
| 3239 return FALSE; //TRUE; | |
| 3240 } | |
| 3241 | |
| 3242 int SynchronizedStatement::usesEH() | |
| 3243 { | |
| 3244 return TRUE; | |
| 3245 } | |
| 3246 | |
| 336 | 3247 int SynchronizedStatement::blockExit() |
| 3248 { | |
| 3249 return body ? body->blockExit() : BEfallthru; | |
| 3250 } | |
| 3251 | |
| 159 | 3252 int SynchronizedStatement::fallOffEnd() |
| 3253 { | |
| 3254 return body ? body->fallOffEnd() : TRUE; | |
| 3255 } | |
| 3256 | |
| 3257 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3258 { | |
| 3259 buf->writestring("synchronized"); | |
| 3260 if (exp) | |
| 3261 { buf->writebyte('('); | |
| 3262 exp->toCBuffer(buf, hgs); | |
| 3263 buf->writebyte(')'); | |
| 3264 } | |
| 3265 if (body) | |
| 3266 { | |
| 3267 buf->writebyte(' '); | |
| 3268 body->toCBuffer(buf, hgs); | |
| 3269 } | |
| 3270 } | |
| 3271 | |
| 3272 /******************************** WithStatement ***************************/ | |
| 3273 | |
| 3274 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 3275 : Statement(loc) | |
| 3276 { | |
| 3277 this->exp = exp; | |
| 3278 this->body = body; | |
| 3279 wthis = NULL; | |
| 3280 } | |
| 3281 | |
| 3282 Statement *WithStatement::syntaxCopy() | |
| 3283 { | |
| 3284 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 3285 return s; | |
| 3286 } | |
| 3287 | |
| 3288 Statement *WithStatement::semantic(Scope *sc) | |
| 3289 { ScopeDsymbol *sym; | |
| 3290 Initializer *init; | |
| 3291 | |
| 3292 //printf("WithStatement::semantic()\n"); | |
| 3293 exp = exp->semantic(sc); | |
| 3294 exp = resolveProperties(sc, exp); | |
| 3295 if (exp->op == TOKimport) | |
| 3296 { ScopeExp *es = (ScopeExp *)exp; | |
| 3297 | |
| 3298 sym = es->sds; | |
| 3299 } | |
| 3300 else if (exp->op == TOKtype) | |
| 3301 { TypeExp *es = (TypeExp *)exp; | |
| 3302 | |
| 3303 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 3304 if (!sym) | |
| 3305 { error("%s has no members", es->toChars()); | |
| 3306 body = body->semantic(sc); | |
| 3307 return this; | |
| 3308 } | |
| 3309 } | |
| 3310 else | |
| 3311 { Type *t = exp->type; | |
| 3312 | |
| 3313 assert(t); | |
| 3314 t = t->toBasetype(); | |
| 3315 if (t->isClassHandle()) | |
| 3316 { | |
| 3317 init = new ExpInitializer(loc, exp); | |
| 3318 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3319 wthis->semantic(sc); | |
| 3320 | |
| 3321 sym = new WithScopeSymbol(this); | |
| 3322 sym->parent = sc->scopesym; | |
| 3323 } | |
| 3324 else if (t->ty == Tstruct) | |
| 3325 { | |
| 3326 Expression *e = exp->addressOf(sc); | |
| 3327 init = new ExpInitializer(loc, e); | |
| 3328 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3329 wthis->semantic(sc); | |
| 3330 sym = new WithScopeSymbol(this); | |
| 3331 sym->parent = sc->scopesym; | |
| 3332 } | |
| 3333 else | |
| 3334 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3335 return NULL; | |
| 3336 } | |
| 3337 } | |
| 3338 sc = sc->push(sym); | |
| 3339 | |
| 3340 if (body) | |
| 3341 body = body->semantic(sc); | |
| 3342 | |
| 3343 sc->pop(); | |
| 3344 | |
| 3345 return this; | |
| 3346 } | |
| 3347 | |
| 3348 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3349 { | |
| 3350 buf->writestring("with ("); | |
| 3351 exp->toCBuffer(buf, hgs); | |
| 3352 buf->writestring(")\n"); | |
| 3353 if (body) | |
| 3354 body->toCBuffer(buf, hgs); | |
| 3355 } | |
| 3356 | |
| 3357 int WithStatement::usesEH() | |
| 3358 { | |
| 3359 return body ? body->usesEH() : 0; | |
| 3360 } | |
| 3361 | |
| 336 | 3362 int WithStatement::blockExit() |
| 3363 { | |
| 3364 int result = BEnone; | |
| 3365 if (exp->canThrow()) | |
| 3366 result = BEthrow; | |
| 3367 if (body) | |
| 3368 result |= body->blockExit(); | |
| 3369 else | |
| 3370 result |= BEfallthru; | |
| 3371 return result; | |
| 3372 } | |
| 3373 | |
| 159 | 3374 int WithStatement::fallOffEnd() |
| 3375 { | |
| 3376 return body ? body->fallOffEnd() : TRUE; | |
| 3377 } | |
| 3378 | |
| 3379 /******************************** TryCatchStatement ***************************/ | |
| 3380 | |
| 3381 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3382 : Statement(loc) | |
| 3383 { | |
| 3384 this->body = body; | |
| 3385 this->catches = catches; | |
| 3386 } | |
| 3387 | |
| 3388 Statement *TryCatchStatement::syntaxCopy() | |
| 3389 { | |
| 3390 Array *a = new Array(); | |
| 3391 a->setDim(catches->dim); | |
| 3392 for (int i = 0; i < a->dim; i++) | |
| 3393 { Catch *c; | |
| 3394 | |
| 3395 c = (Catch *)catches->data[i]; | |
| 3396 c = c->syntaxCopy(); | |
| 3397 a->data[i] = c; | |
| 3398 } | |
| 3399 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3400 return s; | |
| 3401 } | |
| 3402 | |
| 3403 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3404 { | |
| 3405 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3406 | |
| 336 | 3407 /* Even if body is NULL, still do semantic analysis on catches |
| 3408 */ | |
| 3409 for (size_t i = 0; i < catches->dim; i++) | |
| 3410 { Catch *c = (Catch *)catches->data[i]; | |
| 159 | 3411 c->semantic(sc); |
| 3412 | |
| 3413 // Determine if current catch 'hides' any previous catches | |
| 336 | 3414 for (size_t j = 0; j < i; j++) |
| 159 | 3415 { Catch *cj = (Catch *)catches->data[j]; |
| 3416 char *si = c->loc.toChars(); | |
| 3417 char *sj = cj->loc.toChars(); | |
| 3418 | |
| 3419 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3420 error("catch at %s hides catch at %s", sj, si); | |
| 3421 } | |
| 3422 } | |
| 3423 return this; | |
| 3424 } | |
| 3425 | |
| 3426 int TryCatchStatement::hasBreak() | |
| 3427 { | |
| 3428 return FALSE; //TRUE; | |
| 3429 } | |
| 3430 | |
| 3431 int TryCatchStatement::usesEH() | |
| 3432 { | |
| 3433 return TRUE; | |
| 3434 } | |
| 3435 | |
| 336 | 3436 int TryCatchStatement::blockExit() |
| 3437 { int result; | |
| 3438 | |
| 3439 assert(body); | |
| 3440 result = body->blockExit(); | |
| 3441 | |
| 3442 for (size_t i = 0; i < catches->dim; i++) | |
| 3443 { | |
| 3444 Catch *c = (Catch *)catches->data[i]; | |
| 3445 result |= c->blockExit(); | |
| 3446 } | |
| 3447 return result; | |
| 3448 } | |
| 3449 | |
| 159 | 3450 int TryCatchStatement::fallOffEnd() |
| 3451 { | |
| 3452 int result = FALSE; | |
| 3453 | |
| 3454 if (body) | |
| 3455 result = body->fallOffEnd(); | |
| 3456 for (int i = 0; i < catches->dim; i++) | |
| 3457 { Catch *c; | |
| 3458 | |
| 3459 c = (Catch *)catches->data[i]; | |
| 3460 if (c->handler) | |
| 3461 result |= c->handler->fallOffEnd(); | |
| 3462 } | |
| 3463 return result; | |
| 3464 } | |
| 3465 | |
| 3466 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3467 { | |
| 3468 buf->writestring("try"); | |
| 3469 buf->writenl(); | |
| 3470 if (body) | |
| 3471 body->toCBuffer(buf, hgs); | |
| 336 | 3472 for (size_t i = 0; i < catches->dim; i++) |
| 159 | 3473 { |
| 3474 Catch *c = (Catch *)catches->data[i]; | |
| 3475 c->toCBuffer(buf, hgs); | |
| 3476 } | |
| 3477 } | |
| 3478 | |
| 3479 /******************************** Catch ***************************/ | |
| 3480 | |
| 3481 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 3482 { | |
| 3483 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 3484 this->loc = loc; | |
| 3485 this->type = t; | |
| 3486 this->ident = id; | |
| 3487 this->handler = handler; | |
| 3488 var = NULL; | |
| 3489 } | |
| 3490 | |
| 3491 Catch *Catch::syntaxCopy() | |
| 3492 { | |
| 3493 Catch *c = new Catch(loc, | |
| 3494 (type ? type->syntaxCopy() : NULL), | |
| 3495 ident, | |
| 3496 (handler ? handler->syntaxCopy() : NULL)); | |
| 3497 return c; | |
| 3498 } | |
| 3499 | |
| 3500 void Catch::semantic(Scope *sc) | |
| 3501 { ScopeDsymbol *sym; | |
| 3502 | |
| 3503 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 3504 | |
| 3505 #ifndef IN_GCC | |
| 3506 if (sc->tf) | |
| 3507 { | |
| 3508 /* This is because the _d_local_unwind() gets the stack munged | |
| 3509 * up on this. The workaround is to place any try-catches into | |
| 3510 * a separate function, and call that. | |
| 3511 * To fix, have the compiler automatically convert the finally | |
| 3512 * body into a nested function. | |
| 3513 */ | |
| 3514 error(loc, "cannot put catch statement inside finally block"); | |
| 3515 } | |
| 3516 #endif | |
| 3517 | |
| 3518 sym = new ScopeDsymbol(); | |
| 3519 sym->parent = sc->scopesym; | |
| 3520 sc = sc->push(sym); | |
| 3521 | |
| 3522 if (!type) | |
| 3523 type = new TypeIdentifier(0, Id::Object); | |
| 3524 type = type->semantic(loc, sc); | |
| 3525 if (!type->toBasetype()->isClassHandle()) | |
| 3526 error("can only catch class objects, not '%s'", type->toChars()); | |
| 3527 else if (ident) | |
| 3528 { | |
| 3529 var = new VarDeclaration(loc, type, ident, NULL); | |
| 3530 var->parent = sc->parent; | |
| 3531 sc->insert(var); | |
| 3532 } | |
| 3533 handler = handler->semantic(sc); | |
| 3534 | |
| 3535 sc->pop(); | |
| 3536 } | |
| 3537 | |
| 336 | 3538 int Catch::blockExit() |
| 3539 { | |
| 3540 return handler ? handler->blockExit() : BEfallthru; | |
| 3541 } | |
| 3542 | |
| 159 | 3543 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3544 { | |
| 3545 buf->writestring("catch"); | |
| 3546 if (type) | |
| 3547 { buf->writebyte('('); | |
| 3548 type->toCBuffer(buf, ident, hgs); | |
| 3549 buf->writebyte(')'); | |
| 3550 } | |
| 3551 buf->writenl(); | |
| 3552 buf->writebyte('{'); | |
| 3553 buf->writenl(); | |
| 336 | 3554 if (handler) |
| 3555 handler->toCBuffer(buf, hgs); | |
| 159 | 3556 buf->writebyte('}'); |
| 3557 buf->writenl(); | |
| 3558 } | |
| 3559 | |
| 3560 /****************************** TryFinallyStatement ***************************/ | |
| 3561 | |
| 3562 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 3563 : Statement(loc) | |
| 3564 { | |
| 3565 this->body = body; | |
| 3566 this->finalbody = finalbody; | |
| 309 | 3567 this->enclosinghandler = NULL; |
| 159 | 3568 } |
| 3569 | |
| 3570 Statement *TryFinallyStatement::syntaxCopy() | |
| 3571 { | |
| 3572 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 3573 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 3574 return s; | |
| 3575 } | |
| 3576 | |
| 3577 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 3578 { | |
| 3579 //printf("TryFinallyStatement::semantic()\n"); | |
| 3580 | |
| 309 | 3581 enclosinghandler = sc->tfOfTry; |
| 3582 sc->tfOfTry = new EnclosingTryFinally(this); | |
| 159 | 3583 body = body->semantic(sc); |
| 309 | 3584 sc->tfOfTry = enclosinghandler; |
| 159 | 3585 |
| 3586 sc = sc->push(); | |
| 3587 sc->tf = this; | |
| 3588 sc->sbreak = NULL; | |
| 3589 sc->scontinue = NULL; // no break or continue out of finally block | |
| 3590 finalbody = finalbody->semantic(sc); | |
| 3591 sc->pop(); | |
| 3592 return this; | |
| 3593 } | |
| 3594 | |
| 3595 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3596 { | |
| 3597 buf->printf("try\n{\n"); | |
| 3598 body->toCBuffer(buf, hgs); | |
| 3599 buf->printf("}\nfinally\n{\n"); | |
| 3600 finalbody->toCBuffer(buf, hgs); | |
| 3601 buf->writeByte('}'); | |
| 3602 buf->writenl(); | |
| 3603 } | |
| 3604 | |
| 3605 int TryFinallyStatement::hasBreak() | |
| 3606 { | |
| 3607 return FALSE; //TRUE; | |
| 3608 } | |
| 3609 | |
| 3610 int TryFinallyStatement::hasContinue() | |
| 3611 { | |
| 3612 return FALSE; //TRUE; | |
| 3613 } | |
| 3614 | |
| 3615 int TryFinallyStatement::usesEH() | |
| 3616 { | |
| 3617 return TRUE; | |
| 3618 } | |
| 3619 | |
| 336 | 3620 int TryFinallyStatement::blockExit() |
| 3621 { | |
| 3622 int result = body->blockExit(); | |
| 3623 return result; | |
| 3624 } | |
| 3625 | |
| 159 | 3626 int TryFinallyStatement::fallOffEnd() |
| 3627 { int result; | |
| 3628 | |
| 3629 result = body ? body->fallOffEnd() : TRUE; | |
| 3630 // if (finalbody) | |
| 3631 // result = finalbody->fallOffEnd(); | |
| 3632 return result; | |
| 3633 } | |
| 3634 | |
| 3635 /****************************** OnScopeStatement ***************************/ | |
| 3636 | |
| 3637 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 3638 : Statement(loc) | |
| 3639 { | |
| 3640 this->tok = tok; | |
| 3641 this->statement = statement; | |
| 3642 } | |
| 3643 | |
| 3644 Statement *OnScopeStatement::syntaxCopy() | |
| 3645 { | |
| 3646 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 3647 tok, statement->syntaxCopy()); | |
| 3648 return s; | |
| 3649 } | |
| 3650 | |
| 3651 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 3652 { | |
| 3653 /* semantic is called on results of scopeCode() */ | |
| 3654 return this; | |
| 3655 } | |
| 3656 | |
| 336 | 3657 int OnScopeStatement::blockExit() |
| 3658 { // At this point, this statement is just an empty placeholder | |
| 3659 return BEfallthru; | |
| 3660 } | |
| 3661 | |
| 159 | 3662 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3663 { | |
| 3664 buf->writestring(Token::toChars(tok)); | |
| 3665 buf->writebyte(' '); | |
| 3666 statement->toCBuffer(buf, hgs); | |
| 3667 } | |
| 3668 | |
| 3669 int OnScopeStatement::usesEH() | |
| 3670 { | |
| 3671 return (tok != TOKon_scope_success); | |
| 3672 } | |
| 3673 | |
| 3674 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 3675 { | |
| 3676 //printf("OnScopeStatement::scopeCode()\n"); | |
| 3677 //print(); | |
| 3678 *sentry = NULL; | |
| 3679 *sexception = NULL; | |
| 3680 *sfinally = NULL; | |
| 3681 switch (tok) | |
| 3682 { | |
| 3683 case TOKon_scope_exit: | |
| 3684 *sfinally = statement; | |
| 3685 break; | |
| 3686 | |
| 3687 case TOKon_scope_failure: | |
| 3688 *sexception = statement; | |
| 3689 break; | |
| 3690 | |
| 3691 case TOKon_scope_success: | |
| 3692 { | |
| 3693 /* Create: | |
| 3694 * sentry: int x = 0; | |
| 3695 * sexception: x = 1; | |
| 3696 * sfinally: if (!x) statement; | |
| 3697 */ | |
| 3698 static int num; | |
| 3699 char name[5 + sizeof(num) * 3 + 1]; | |
| 3700 sprintf(name, "__osf%d", ++num); | |
| 3701 Identifier *id = Lexer::idPool(name); | |
| 3702 | |
| 3703 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 3704 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 3705 *sentry = new DeclarationStatement(loc, v); | |
| 3706 | |
| 3707 Expression *e = new IntegerExp(1); | |
| 3708 e = new AssignExp(0, new VarExp(0, v), e); | |
| 3709 *sexception = new ExpStatement(0, e); | |
| 3710 | |
| 3711 e = new VarExp(0, v); | |
| 3712 e = new NotExp(0, e); | |
| 3713 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 3714 | |
| 3715 break; | |
| 3716 } | |
| 3717 | |
| 3718 default: | |
| 3719 assert(0); | |
| 3720 } | |
| 3721 } | |
| 3722 | |
| 3723 /******************************** ThrowStatement ***************************/ | |
| 3724 | |
| 3725 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 3726 : Statement(loc) | |
| 3727 { | |
| 3728 this->exp = exp; | |
| 3729 } | |
| 3730 | |
| 3731 Statement *ThrowStatement::syntaxCopy() | |
| 3732 { | |
| 3733 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 3734 return s; | |
| 3735 } | |
| 3736 | |
| 3737 Statement *ThrowStatement::semantic(Scope *sc) | |
| 3738 { | |
| 3739 //printf("ThrowStatement::semantic()\n"); | |
| 3740 | |
| 3741 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3742 fd->hasReturnExp |= 2; | |
| 3743 | |
| 3744 if (sc->incontract) | |
| 3745 error("Throw statements cannot be in contracts"); | |
| 3746 exp = exp->semantic(sc); | |
| 3747 exp = resolveProperties(sc, exp); | |
| 3748 if (!exp->type->toBasetype()->isClassHandle()) | |
| 3749 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 3750 return this; | |
| 3751 } | |
| 3752 | |
| 336 | 3753 int ThrowStatement::blockExit() |
| 3754 { | |
| 3755 return BEthrow; // obviously | |
| 3756 } | |
| 3757 | |
| 159 | 3758 int ThrowStatement::fallOffEnd() |
| 3759 { | |
| 3760 return FALSE; | |
| 3761 } | |
| 3762 | |
| 3763 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3764 { | |
| 3765 buf->printf("throw "); | |
| 3766 exp->toCBuffer(buf, hgs); | |
| 3767 buf->writeByte(';'); | |
| 3768 buf->writenl(); | |
| 3769 } | |
| 3770 | |
| 3771 /******************************** VolatileStatement **************************/ | |
| 3772 | |
| 3773 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 3774 : Statement(loc) | |
| 3775 { | |
| 3776 this->statement = statement; | |
| 309 | 3777 this->enclosinghandler = NULL; |
| 159 | 3778 } |
| 3779 | |
| 3780 Statement *VolatileStatement::syntaxCopy() | |
| 3781 { | |
| 3782 VolatileStatement *s = new VolatileStatement(loc, | |
| 3783 statement ? statement->syntaxCopy() : NULL); | |
| 3784 return s; | |
| 3785 } | |
| 3786 | |
| 3787 Statement *VolatileStatement::semantic(Scope *sc) | |
| 3788 { | |
| 309 | 3789 if (statement) |
| 3790 { | |
| 3791 enclosinghandler = sc->tfOfTry; | |
| 3792 sc->tfOfTry = new EnclosingVolatile(this); | |
| 3793 statement = statement->semantic(sc); | |
| 3794 sc->tfOfTry = enclosinghandler; | |
| 3795 } | |
| 159 | 3796 return this; |
| 3797 } | |
| 3798 | |
| 3799 Statements *VolatileStatement::flatten(Scope *sc) | |
| 3800 { | |
| 3801 Statements *a; | |
| 3802 | |
| 3803 a = statement ? statement->flatten(sc) : NULL; | |
| 3804 if (a) | |
| 3805 { for (int i = 0; i < a->dim; i++) | |
| 3806 { Statement *s = (Statement *)a->data[i]; | |
| 3807 | |
| 3808 s = new VolatileStatement(loc, s); | |
| 3809 a->data[i] = s; | |
| 3810 } | |
| 3811 } | |
| 3812 | |
| 3813 return a; | |
| 3814 } | |
| 3815 | |
| 336 | 3816 int VolatileStatement::blockExit() |
| 3817 { | |
| 3818 return statement ? statement->blockExit() : BEfallthru; | |
| 3819 } | |
| 3820 | |
| 159 | 3821 int VolatileStatement::fallOffEnd() |
| 3822 { | |
| 3823 return statement ? statement->fallOffEnd() : TRUE; | |
| 3824 } | |
| 3825 | |
| 3826 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3827 { | |
| 3828 buf->writestring("volatile"); | |
| 3829 if (statement) | |
| 3830 { if (statement->isScopeStatement()) | |
| 3831 buf->writenl(); | |
| 3832 else | |
| 3833 buf->writebyte(' '); | |
| 3834 statement->toCBuffer(buf, hgs); | |
| 3835 } | |
| 3836 } | |
| 3837 | |
| 3838 | |
| 3839 /******************************** GotoStatement ***************************/ | |
| 3840 | |
| 3841 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 3842 : Statement(loc) | |
| 3843 { | |
| 3844 this->ident = ident; | |
| 3845 this->label = NULL; | |
| 3846 this->tf = NULL; | |
| 309 | 3847 this->enclosinghandler = NULL; |
| 159 | 3848 } |
| 3849 | |
| 3850 Statement *GotoStatement::syntaxCopy() | |
| 3851 { | |
| 3852 GotoStatement *s = new GotoStatement(loc, ident); | |
| 3853 return s; | |
| 3854 } | |
| 3855 | |
| 3856 Statement *GotoStatement::semantic(Scope *sc) | |
| 3857 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3858 | |
| 3859 //printf("GotoStatement::semantic()\n"); | |
| 3860 tf = sc->tf; | |
| 309 | 3861 enclosinghandler = sc->tfOfTry; |
| 159 | 3862 label = fd->searchLabel(ident); |
| 3863 if (!label->statement && sc->fes) | |
| 3864 { | |
| 3865 /* Either the goto label is forward referenced or it | |
| 3866 * is in the function that the enclosing foreach is in. | |
| 3867 * Can't know yet, so wrap the goto in a compound statement | |
| 3868 * so we can patch it later, and add it to a 'look at this later' | |
| 3869 * list. | |
| 3870 */ | |
| 3871 Statements *a = new Statements(); | |
| 3872 Statement *s; | |
| 3873 | |
| 3874 a->push(this); | |
| 3875 s = new CompoundStatement(loc, a); | |
| 3876 sc->fes->gotos.push(s); // 'look at this later' list | |
| 3877 return s; | |
| 3878 } | |
| 3879 if (label->statement && label->statement->tf != sc->tf) | |
| 3880 error("cannot goto in or out of finally block"); | |
| 3881 return this; | |
| 3882 } | |
| 3883 | |
| 336 | 3884 int GotoStatement::blockExit() |
| 3885 { | |
| 3886 //printf("GotoStatement::blockExit(%p)\n", this); | |
| 3887 return BEgoto; | |
| 3888 } | |
| 3889 | |
| 159 | 3890 int GotoStatement::fallOffEnd() |
| 3891 { | |
| 3892 return FALSE; | |
| 3893 } | |
| 3894 | |
| 3895 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3896 { | |
| 3897 buf->writestring("goto "); | |
| 3898 buf->writestring(ident->toChars()); | |
| 3899 buf->writebyte(';'); | |
| 3900 buf->writenl(); | |
| 3901 } | |
| 3902 | |
| 3903 /******************************** LabelStatement ***************************/ | |
| 3904 | |
| 3905 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 3906 : Statement(loc) | |
| 3907 { | |
| 3908 this->ident = ident; | |
| 3909 this->statement = statement; | |
| 3910 this->tf = NULL; | |
| 309 | 3911 this->enclosinghandler = NULL; |
| 159 | 3912 this->lblock = NULL; |
| 3913 this->isReturnLabel = 0; | |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3914 this->asmLabel = false; |
| 159 | 3915 } |
| 3916 | |
| 3917 Statement *LabelStatement::syntaxCopy() | |
| 3918 { | |
| 3919 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 3920 return s; | |
| 3921 } | |
| 3922 | |
| 3923 Statement *LabelStatement::semantic(Scope *sc) | |
| 3924 { LabelDsymbol *ls; | |
| 3925 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3926 | |
| 3927 //printf("LabelStatement::semantic()\n"); | |
| 3928 ls = fd->searchLabel(ident); | |
| 3929 if (ls->statement) | |
| 3930 error("Label '%s' already defined", ls->toChars()); | |
| 3931 else | |
| 3932 ls->statement = this; | |
| 3933 tf = sc->tf; | |
| 309 | 3934 enclosinghandler = sc->tfOfTry; |
| 159 | 3935 sc = sc->push(); |
| 3936 sc->scopesym = sc->enclosing->scopesym; | |
| 3937 sc->callSuper |= CSXlabel; | |
| 3938 sc->slabel = this; | |
| 3939 if (statement) | |
| 3940 statement = statement->semantic(sc); | |
| 3941 sc->pop(); | |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3942 |
|
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3943 // LLVMDC put in labmap |
|
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3944 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
|
3945 |
| 159 | 3946 return this; |
| 3947 } | |
| 3948 | |
| 3949 Statements *LabelStatement::flatten(Scope *sc) | |
| 3950 { | |
| 3951 Statements *a = NULL; | |
| 3952 | |
| 3953 if (statement) | |
| 3954 { | |
| 3955 a = statement->flatten(sc); | |
| 3956 if (a) | |
| 3957 { | |
| 3958 if (!a->dim) | |
| 3959 { | |
| 3960 a->push(new ExpStatement(loc, NULL)); | |
| 3961 } | |
| 3962 Statement *s = (Statement *)a->data[0]; | |
| 3963 | |
| 3964 s = new LabelStatement(loc, ident, s); | |
| 3965 a->data[0] = s; | |
| 3966 } | |
| 3967 } | |
| 3968 | |
| 3969 return a; | |
| 3970 } | |
| 3971 | |
| 3972 | |
| 3973 int LabelStatement::usesEH() | |
| 3974 { | |
| 3975 return statement ? statement->usesEH() : FALSE; | |
| 3976 } | |
| 3977 | |
| 336 | 3978 int LabelStatement::blockExit() |
| 3979 { | |
| 3980 //printf("LabelStatement::blockExit(%p)\n", this); | |
| 3981 return statement ? statement->blockExit() : BEfallthru; | |
| 3982 } | |
| 3983 | |
| 159 | 3984 int LabelStatement::fallOffEnd() |
| 3985 { | |
| 3986 return statement ? statement->fallOffEnd() : TRUE; | |
| 3987 } | |
| 3988 | |
| 3989 int LabelStatement::comeFrom() | |
| 3990 { | |
| 3991 //printf("LabelStatement::comeFrom()\n"); | |
| 3992 return TRUE; | |
| 3993 } | |
| 3994 | |
| 3995 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3996 { | |
| 3997 buf->writestring(ident->toChars()); | |
| 3998 buf->writebyte(':'); | |
| 3999 buf->writenl(); | |
| 4000 if (statement) | |
| 4001 statement->toCBuffer(buf, hgs); | |
| 4002 } | |
| 4003 | |
| 4004 | |
| 4005 /******************************** LabelDsymbol ***************************/ | |
| 4006 | |
| 4007 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 4008 : Dsymbol(ident) | |
| 4009 { | |
| 4010 statement = NULL; | |
| 4011 } | |
| 4012 | |
| 4013 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 4014 { | |
| 4015 return this; | |
| 4016 } | |
| 4017 | |
| 4018 |