Mercurial > projects > ldc
annotate dmd/statement.c @ 765:f08e0ff8d28c
Fixed 32bit assumption in statement.c when calling aaApply(2).
| author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
|---|---|
| date | Wed, 12 Nov 2008 07:41:56 +0100 |
| parents | 7261ff0f95ff |
| children | 661384d6a936 |
| 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.
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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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262
diff
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|
1334 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1335 if (keyty != Tint32 && keyty != Tuns32 && keyty != Tint64 && keyty != Tuns64) |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1336 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1337 error("foreach: key type must be int, uint, long or ulong, not %s", key->type->toChars()); |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1338 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1339 } |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
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diff
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|
1340 else if (keyty != Tint32 && keyty != Tuns32) |
|
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lindquist
parents:
262
diff
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|
1341 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1342 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
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lindquist
parents:
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diff
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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 | |
|
275
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lindquist
parents:
262
diff
changeset
|
1474 if (key) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1475 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1476 if (global.params.is64bit) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1477 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1478 if (key->type->ty != Tint32 && key->type->ty != Tuns32 && key->type->ty != Tint64 && key->type->ty != Tuns64) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1479 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1480 error("foreach: key type must be int, uint, long or ulong, not %s", key->type->toChars()); |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1481 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1482 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1483 else if (key->type->ty != Tint32 && key->type->ty != Tuns32) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1484 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1485 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1486 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
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; | |
|
719
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1520 TypeDelegate* dgty; |
|
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1521 TypeDelegate* dgty2; |
|
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1522 TypeDelegate* fldeTy; |
| 159 | 1523 |
| 1524 tret = func->type->nextOf(); | |
| 1525 | |
| 1526 // Need a variable to hold value from any return statements in body. | |
| 1527 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1528 { VarDeclaration *v; | |
| 1529 | |
| 1530 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 1531 v->noauto = 1; | |
| 1532 v->semantic(sc); | |
| 1533 if (!sc->insert(v)) | |
| 1534 assert(0); | |
| 1535 v->parent = sc->func; | |
| 1536 sc->func->vresult = v; | |
| 1537 } | |
| 1538 | |
| 1539 /* Turn body into the function literal: | |
| 1540 * int delegate(ref T arg) { body } | |
| 1541 */ | |
| 1542 args = new Arguments(); | |
| 1543 for (i = 0; i < dim; i++) | |
| 1544 { Argument *arg = (Argument *)arguments->data[i]; | |
| 1545 | |
| 1546 arg->type = arg->type->semantic(loc, sc); | |
| 1547 if (arg->storageClass & STCref) | |
| 1548 id = arg->ident; | |
| 1549 else | |
| 1550 { // Make a copy of the ref argument so it isn't | |
| 1551 // a reference. | |
| 1552 VarDeclaration *v; | |
| 1553 Initializer *ie; | |
| 1554 char applyArg[10 + sizeof(i)*3 + 1]; | |
| 1555 | |
| 1556 sprintf(applyArg, "__applyArg%d", i); | |
| 1557 id = Lexer::idPool(applyArg); | |
| 1558 | |
| 1559 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1560 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1561 s = new DeclarationStatement(0, v); | |
| 1562 body = new CompoundStatement(loc, s, body); | |
| 1563 } | |
| 1564 a = new Argument(STCref, arg->type, id, NULL); | |
| 1565 args->push(a); | |
| 1566 } | |
| 1567 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1568 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1569 fld->fbody = body; | |
| 1570 flde = new FuncExp(loc, fld); | |
| 1571 flde = flde->semantic(sc); | |
| 1572 | |
| 1573 // Resolve any forward referenced goto's | |
| 1574 for (int i = 0; i < gotos.dim; i++) | |
| 1575 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1576 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1577 | |
| 1578 if (!gs->label->statement) | |
| 1579 { // 'Promote' it to this scope, and replace with a return | |
| 1580 cases.push(gs); | |
| 1581 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1582 cs->statements->data[0] = (void *)s; | |
| 1583 } | |
| 1584 } | |
| 1585 | |
| 1586 if (tab->ty == Taarray) | |
| 1587 { | |
| 1588 // Check types | |
| 1589 Argument *arg = (Argument *)arguments->data[0]; | |
| 1590 if (dim == 2) | |
| 1591 { | |
| 1592 if (arg->storageClass & STCref) | |
| 1593 error("foreach: index cannot be ref"); | |
| 1594 if (!arg->type->equals(taa->index)) | |
| 1595 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
| 1596 arg = (Argument *)arguments->data[1]; | |
| 1597 } | |
| 1598 if (!arg->type->equals(taa->nextOf())) | |
| 1599 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1600 | |
| 1601 /* Call: | |
| 1602 * _aaApply(aggr, keysize, flde) | |
| 1603 */ | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
1604 //LDC: Build arguments. |
|
389
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1605 static FuncDeclaration *aaApply2_fd = NULL; |
|
719
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1606 static TypeDelegate* aaApply2_dg; |
|
389
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1607 if(!aaApply2_fd) { |
|
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1608 Arguments* args = new Arguments; |
|
715
30b42a283c8e
Removed TypeOpaque from DMD.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
1609 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
|
389
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1610 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
|
378
d8234836b40f
Get rid of runTimeHack and instead add proper argument info to the frontend
Christian Kamm <kamm incasoftware de>
parents:
353
diff
changeset
|
1611 Arguments* dgargs = new Arguments; |
|
d8234836b40f
Get rid of runTimeHack and instead add proper argument info to the frontend
Christian Kamm <kamm incasoftware de>
parents:
353
diff
changeset
|
1612 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
d8234836b40f
Get rid of runTimeHack and instead add proper argument info to the frontend
Christian Kamm <kamm incasoftware de>
parents:
353
diff
changeset
|
1613 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
719
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1614 aaApply2_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1615 args->push(new Argument(STCin, aaApply2_dg, NULL, NULL)); |
|
389
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1616 aaApply2_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply2"); |
|
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1617 } |
|
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1618 static FuncDeclaration *aaApply_fd = NULL; |
|
719
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1619 static TypeDelegate* aaApply_dg; |
|
389
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1620 if(!aaApply_fd) { |
|
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1621 Arguments* args = new Arguments; |
|
715
30b42a283c8e
Removed TypeOpaque from DMD.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
1622 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
|
389
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1623 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
|
378
d8234836b40f
Get rid of runTimeHack and instead add proper argument info to the frontend
Christian Kamm <kamm incasoftware de>
parents:
353
diff
changeset
|
1624 Arguments* dgargs = new Arguments; |
|
d8234836b40f
Get rid of runTimeHack and instead add proper argument info to the frontend
Christian Kamm <kamm incasoftware de>
parents:
353
diff
changeset
|
1625 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
719
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1626 aaApply_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1627 args->push(new Argument(STCin, aaApply_dg, NULL, NULL)); |
|
389
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1628 aaApply_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply"); |
|
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1629 } |
|
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1630 if (dim == 2) { |
|
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1631 fdapply = aaApply2_fd; |
|
719
7261ff0f95ff
Implemented first class delegates. closes #101
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
715
diff
changeset
|
1632 fldeTy = aaApply2_dg; |
|
389
722f5e90c39c
Made setup for runtime calls in dmd frontend allocate less.
Christian Kamm <kamm incasoftware de>
parents:
380
diff
changeset
|
1633 } else { |
|
722f5e90c39c
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1634 fdapply = aaApply_fd; |
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1635 fldeTy = aaApply_dg; |
|
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1636 } |
| 159 | 1637 ec = new VarExp(0, fdapply); |
| 1638 Expressions *exps = new Expressions(); | |
| 1639 exps->push(aggr); | |
| 1640 size_t keysize = taa->key->size(); | |
|
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|
1641 keysize = (keysize + (PTRSIZE-1)) & ~(PTRSIZE-1); |
| 159 | 1642 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); |
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1643 |
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1644 // LDC paint delegate argument to the type runtime expects |
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1645 if (!fldeTy->equals(flde->type)) |
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1646 { |
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1647 flde = new CastExp(loc, flde, flde->type); |
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1648 flde->type = fldeTy; |
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1649 } |
| 159 | 1650 exps->push(flde); |
|
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1651 |
| 159 | 1652 e = new CallExp(loc, ec, exps); |
| 1653 e->type = Type::tindex; // don't run semantic() on e | |
| 1654 } | |
| 1655 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1656 { | |
| 1657 /* Call: | |
| 1658 * _aApply(aggr, flde) | |
| 1659 */ | |
| 1660 static char fntab[9][3] = | |
| 1661 { "cc","cw","cd", | |
| 1662 "wc","cc","wd", | |
| 1663 "dc","dw","dd" | |
| 1664 }; | |
| 1665 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1666 int flag; | |
| 1667 | |
| 1668 switch (tn->ty) | |
| 1669 { | |
| 1670 case Tchar: flag = 0; break; | |
| 1671 case Twchar: flag = 3; break; | |
| 1672 case Tdchar: flag = 6; break; | |
| 1673 default: assert(0); | |
| 1674 } | |
| 1675 switch (tnv->ty) | |
| 1676 { | |
| 1677 case Tchar: flag += 0; break; | |
| 1678 case Twchar: flag += 1; break; | |
| 1679 case Tdchar: flag += 2; break; | |
| 1680 default: assert(0); | |
| 1681 } | |
| 1682 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
| 1683 int j = sprintf(fdname, "_aApply%s%.*s%d", r, 2, fntab[flag], dim); | |
| 1684 assert(j < sizeof(fdname)); | |
|
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1685 //LDC: Build arguments. |
|
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1686 Arguments* args = new Arguments; |
|
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1687 args->push(new Argument(STCin, tn->arrayOf(), NULL, NULL)); |
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1688 if (dim == 2) { |
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1689 Arguments* dgargs = new Arguments; |
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1690 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1691 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1692 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
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1693 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1694 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1695 } else { |
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1696 Arguments* dgargs = new Arguments; |
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1697 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1698 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
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1699 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1700 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1701 } |
| 159 | 1702 |
| 1703 ec = new VarExp(0, fdapply); | |
| 1704 Expressions *exps = new Expressions(); | |
| 1705 if (tab->ty == Tsarray) | |
| 1706 aggr = aggr->castTo(sc, tn->arrayOf()); | |
|
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1707 exps->push(aggr); |
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1708 |
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|
1709 // LDC paint delegate argument to the type runtime expects |
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1710 if (!dgty->equals(flde->type)) |
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1711 { |
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1712 flde = new CastExp(loc, flde, flde->type); |
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|
1713 flde->type = dgty; |
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1714 } |
| 159 | 1715 exps->push(flde); |
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1716 |
| 159 | 1717 e = new CallExp(loc, ec, exps); |
| 1718 e->type = Type::tindex; // don't run semantic() on e | |
| 1719 } | |
| 1720 else if (tab->ty == Tdelegate) | |
| 1721 { | |
| 1722 /* Call: | |
| 1723 * aggr(flde) | |
| 1724 */ | |
| 1725 Expressions *exps = new Expressions(); | |
| 1726 exps->push(flde); | |
| 1727 e = new CallExp(loc, aggr, exps); | |
| 1728 e = e->semantic(sc); | |
| 1729 if (e->type != Type::tint32) | |
| 1730 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1731 } | |
| 1732 else | |
| 1733 { | |
| 1734 /* Call: | |
| 1735 * aggr.apply(flde) | |
| 1736 */ | |
| 1737 ec = new DotIdExp(loc, aggr, | |
| 1738 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1739 : Id::apply); | |
| 1740 Expressions *exps = new Expressions(); | |
| 1741 exps->push(flde); | |
| 1742 e = new CallExp(loc, ec, exps); | |
| 1743 e = e->semantic(sc); | |
| 1744 if (e->type != Type::tint32) | |
| 1745 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1746 } | |
| 1747 | |
| 1748 if (!cases.dim) | |
| 1749 // Easy case, a clean exit from the loop | |
| 1750 s = new ExpStatement(loc, e); | |
| 1751 else | |
| 1752 { // Construct a switch statement around the return value | |
| 1753 // of the apply function. | |
| 1754 Statements *a = new Statements(); | |
| 1755 | |
| 1756 // default: break; takes care of cases 0 and 1 | |
| 1757 s = new BreakStatement(0, NULL); | |
| 1758 s = new DefaultStatement(0, s); | |
| 1759 a->push(s); | |
| 1760 | |
| 1761 // cases 2... | |
| 1762 for (int i = 0; i < cases.dim; i++) | |
| 1763 { | |
| 1764 s = (Statement *)cases.data[i]; | |
| 1765 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1766 a->push(s); | |
| 1767 } | |
| 1768 | |
| 1769 s = new CompoundStatement(loc, a); | |
| 1770 s = new SwitchStatement(loc, e, s); | |
| 1771 s = s->semantic(sc); | |
| 1772 } | |
| 1773 break; | |
| 1774 } | |
| 1775 | |
| 1776 default: | |
| 1777 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1778 break; | |
| 1779 } | |
| 1780 sc->noctor--; | |
| 1781 sc->pop(); | |
| 1782 return s; | |
| 1783 } | |
| 1784 | |
| 1785 int ForeachStatement::hasBreak() | |
| 1786 { | |
| 1787 return TRUE; | |
| 1788 } | |
| 1789 | |
| 1790 int ForeachStatement::hasContinue() | |
| 1791 { | |
| 1792 return TRUE; | |
| 1793 } | |
| 1794 | |
| 1795 int ForeachStatement::usesEH() | |
| 1796 { | |
| 1797 return body->usesEH(); | |
| 1798 } | |
| 1799 | |
| 336 | 1800 int ForeachStatement::blockExit() |
| 1801 { int result = BEfallthru; | |
| 1802 | |
| 1803 if (aggr->canThrow()) | |
| 1804 result |= BEthrow; | |
| 1805 | |
| 1806 if (body) | |
| 1807 { | |
| 1808 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 1809 } | |
| 1810 return result; | |
| 1811 } | |
| 1812 | |
| 159 | 1813 int ForeachStatement::fallOffEnd() |
| 1814 { | |
| 1815 if (body) | |
| 1816 body->fallOffEnd(); | |
| 1817 return TRUE; | |
| 1818 } | |
| 1819 | |
| 1820 int ForeachStatement::comeFrom() | |
| 1821 { | |
| 1822 if (body) | |
| 1823 return body->comeFrom(); | |
| 1824 return FALSE; | |
| 1825 } | |
| 1826 | |
| 1827 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1828 { | |
| 1829 buf->writestring(Token::toChars(op)); | |
| 1830 buf->writestring(" ("); | |
| 1831 for (int i = 0; i < arguments->dim; i++) | |
| 1832 { | |
| 1833 Argument *a = (Argument *)arguments->data[i]; | |
| 1834 if (i) | |
| 1835 buf->writestring(", "); | |
| 1836 if (a->storageClass & STCref) | |
| 1837 buf->writestring((global.params.Dversion == 1) | |
| 1838 ? (char*)"inout " : (char*)"ref "); | |
| 1839 if (a->type) | |
| 1840 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1841 else | |
| 1842 buf->writestring(a->ident->toChars()); | |
| 1843 } | |
| 1844 buf->writestring("; "); | |
| 1845 aggr->toCBuffer(buf, hgs); | |
| 1846 buf->writebyte(')'); | |
| 1847 buf->writenl(); | |
| 1848 buf->writebyte('{'); | |
| 1849 buf->writenl(); | |
| 1850 if (body) | |
| 1851 body->toCBuffer(buf, hgs); | |
| 1852 buf->writebyte('}'); | |
| 1853 buf->writenl(); | |
| 1854 } | |
| 1855 | |
| 1856 /******************************** IfStatement ***************************/ | |
| 1857 | |
| 1858 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody) | |
| 1859 : Statement(loc) | |
| 1860 { | |
| 1861 this->arg = arg; | |
| 1862 this->condition = condition; | |
| 1863 this->ifbody = ifbody; | |
| 1864 this->elsebody = elsebody; | |
| 1865 this->match = NULL; | |
| 1866 } | |
| 1867 | |
| 1868 Statement *IfStatement::syntaxCopy() | |
| 1869 { | |
| 1870 Statement *i = NULL; | |
| 1871 if (ifbody) | |
| 1872 i = ifbody->syntaxCopy(); | |
| 1873 | |
| 1874 Statement *e = NULL; | |
| 1875 if (elsebody) | |
| 1876 e = elsebody->syntaxCopy(); | |
| 1877 | |
| 1878 Argument *a = arg ? arg->syntaxCopy() : NULL; | |
| 1879 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); | |
| 1880 return s; | |
| 1881 } | |
| 1882 | |
| 1883 Statement *IfStatement::semantic(Scope *sc) | |
| 1884 { | |
| 1885 condition = condition->semantic(sc); | |
| 1886 condition = resolveProperties(sc, condition); | |
| 1887 condition = condition->checkToBoolean(); | |
| 1888 | |
| 1889 // If we can short-circuit evaluate the if statement, don't do the | |
| 1890 // semantic analysis of the skipped code. | |
| 1891 // This feature allows a limited form of conditional compilation. | |
| 1892 condition = condition->optimize(WANTflags); | |
| 1893 | |
| 1894 // Evaluate at runtime | |
| 1895 unsigned cs0 = sc->callSuper; | |
| 1896 unsigned cs1; | |
| 1897 | |
| 1898 Scope *scd; | |
| 1899 if (arg) | |
| 1900 { /* Declare arg, which we will set to be the | |
| 1901 * result of condition. | |
| 1902 */ | |
| 1903 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1904 sym->parent = sc->scopesym; | |
| 1905 scd = sc->push(sym); | |
| 1906 | |
| 1907 Type *t = arg->type ? arg->type : condition->type; | |
| 1908 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
| 1909 match->noauto = 1; | |
| 1910 match->semantic(scd); | |
| 1911 if (!scd->insert(match)) | |
| 1912 assert(0); | |
| 1913 match->parent = sc->func; | |
| 1914 | |
| 1915 /* Generate: | |
| 1916 * (arg = condition) | |
| 1917 */ | |
| 1918 VarExp *v = new VarExp(0, match); | |
| 1919 condition = new AssignExp(loc, v, condition); | |
| 1920 condition = condition->semantic(scd); | |
| 1921 } | |
| 1922 else | |
| 1923 scd = sc->push(); | |
| 1924 ifbody = ifbody->semantic(scd); | |
| 1925 scd->pop(); | |
| 1926 | |
| 1927 cs1 = sc->callSuper; | |
| 1928 sc->callSuper = cs0; | |
| 1929 if (elsebody) | |
| 1930 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 1931 sc->mergeCallSuper(loc, cs1); | |
| 1932 | |
| 1933 return this; | |
| 1934 } | |
| 1935 | |
| 1936 int IfStatement::usesEH() | |
| 1937 { | |
| 1938 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 1939 } | |
| 1940 | |
| 336 | 1941 int IfStatement::blockExit() |
| 1942 { | |
| 1943 //printf("IfStatement::blockExit(%p)\n", this); | |
| 1944 | |
| 1945 int result = BEnone; | |
| 1946 if (condition->canThrow()) | |
| 1947 result |= BEthrow; | |
| 1948 if (condition->isBool(TRUE)) | |
| 1949 { | |
| 1950 if (ifbody) | |
| 1951 result |= ifbody->blockExit(); | |
| 1952 else | |
| 1953 result |= BEfallthru; | |
| 1954 } | |
| 1955 else if (condition->isBool(FALSE)) | |
| 1956 { | |
| 1957 if (elsebody) | |
| 1958 result |= elsebody->blockExit(); | |
| 1959 else | |
| 1960 result |= BEfallthru; | |
| 1961 } | |
| 1962 else | |
| 1963 { | |
| 1964 if (ifbody) | |
| 1965 result |= ifbody->blockExit(); | |
| 1966 else | |
| 1967 result |= BEfallthru; | |
| 1968 if (elsebody) | |
| 1969 result |= elsebody->blockExit(); | |
| 1970 else | |
| 1971 result |= BEfallthru; | |
| 1972 } | |
| 1973 //printf("IfStatement::blockExit(%p) = x%x\n", this, result); | |
| 1974 return result; | |
| 1975 } | |
| 1976 | |
| 159 | 1977 int IfStatement::fallOffEnd() |
| 1978 { | |
| 1979 if (!ifbody || ifbody->fallOffEnd() || | |
| 1980 !elsebody || elsebody->fallOffEnd()) | |
| 1981 return TRUE; | |
| 1982 return FALSE; | |
| 1983 } | |
| 1984 | |
| 1985 | |
| 1986 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1987 { | |
| 1988 buf->writestring("if ("); | |
| 1989 if (arg) | |
| 1990 { | |
| 1991 if (arg->type) | |
| 1992 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 1993 else | |
|
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1994 { buf->writestring("auto "); |
| 159 | 1995 buf->writestring(arg->ident->toChars()); |
|
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1996 } |
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|
1997 buf->writestring(" = "); |
| 159 | 1998 } |
| 1999 condition->toCBuffer(buf, hgs); | |
| 2000 buf->writebyte(')'); | |
| 2001 buf->writenl(); | |
| 2002 ifbody->toCBuffer(buf, hgs); | |
| 2003 if (elsebody) | |
| 2004 { buf->writestring("else"); | |
| 2005 buf->writenl(); | |
| 2006 elsebody->toCBuffer(buf, hgs); | |
| 2007 } | |
| 2008 } | |
| 2009 | |
| 2010 /******************************** ConditionalStatement ***************************/ | |
| 2011 | |
| 2012 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 2013 : Statement(loc) | |
| 2014 { | |
| 2015 this->condition = condition; | |
| 2016 this->ifbody = ifbody; | |
| 2017 this->elsebody = elsebody; | |
| 2018 } | |
| 2019 | |
| 2020 Statement *ConditionalStatement::syntaxCopy() | |
| 2021 { | |
| 2022 Statement *e = NULL; | |
| 2023 if (elsebody) | |
| 2024 e = elsebody->syntaxCopy(); | |
| 2025 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 2026 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 2027 return s; | |
| 2028 } | |
| 2029 | |
| 2030 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 2031 { | |
| 2032 //printf("ConditionalStatement::semantic()\n"); | |
| 2033 | |
| 2034 // If we can short-circuit evaluate the if statement, don't do the | |
| 2035 // semantic analysis of the skipped code. | |
| 2036 // This feature allows a limited form of conditional compilation. | |
| 2037 if (condition->include(sc, NULL)) | |
| 2038 { | |
| 2039 ifbody = ifbody->semantic(sc); | |
| 2040 return ifbody; | |
| 2041 } | |
| 2042 else | |
| 2043 { | |
| 2044 if (elsebody) | |
| 2045 elsebody = elsebody->semantic(sc); | |
| 2046 return elsebody; | |
| 2047 } | |
| 2048 } | |
| 2049 | |
| 2050 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 2051 { | |
| 2052 Statement *s; | |
| 2053 | |
| 2054 if (condition->include(sc, NULL)) | |
| 2055 s = ifbody; | |
| 2056 else | |
| 2057 s = elsebody; | |
| 2058 | |
| 2059 Statements *a = new Statements(); | |
| 2060 a->push(s); | |
| 2061 return a; | |
| 2062 } | |
| 2063 | |
| 2064 int ConditionalStatement::usesEH() | |
| 2065 { | |
| 2066 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2067 } | |
| 2068 | |
|
510
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2069 int ConditionalStatement::blockExit() |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2070 { |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2071 int result = ifbody->blockExit(); |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2072 if (elsebody) |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2073 result |= elsebody->blockExit(); |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2074 return result; |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2075 } |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2076 |
| 159 | 2077 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2078 { | |
| 2079 condition->toCBuffer(buf, hgs); | |
| 2080 buf->writenl(); | |
| 336 | 2081 buf->writeByte('{'); |
| 2082 buf->writenl(); | |
| 159 | 2083 if (ifbody) |
| 2084 ifbody->toCBuffer(buf, hgs); | |
| 336 | 2085 buf->writeByte('}'); |
| 2086 buf->writenl(); | |
| 159 | 2087 if (elsebody) |
| 2088 { | |
| 2089 buf->writestring("else"); | |
| 2090 buf->writenl(); | |
| 336 | 2091 buf->writeByte('{'); |
| 2092 buf->writenl(); | |
| 159 | 2093 elsebody->toCBuffer(buf, hgs); |
| 336 | 2094 buf->writeByte('}'); |
| 2095 buf->writenl(); | |
| 159 | 2096 } |
| 2097 buf->writenl(); | |
| 2098 } | |
| 2099 | |
| 2100 | |
| 2101 /******************************** PragmaStatement ***************************/ | |
| 2102 | |
| 2103 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 2104 : Statement(loc) | |
| 2105 { | |
| 2106 this->ident = ident; | |
| 2107 this->args = args; | |
| 2108 this->body = body; | |
| 2109 } | |
| 2110 | |
| 2111 Statement *PragmaStatement::syntaxCopy() | |
| 2112 { | |
| 2113 Statement *b = NULL; | |
| 2114 if (body) | |
| 2115 b = body->syntaxCopy(); | |
| 2116 PragmaStatement *s = new PragmaStatement(loc, | |
| 2117 ident, Expression::arraySyntaxCopy(args), b); | |
| 2118 return s; | |
| 2119 } | |
| 2120 | |
| 2121 Statement *PragmaStatement::semantic(Scope *sc) | |
| 2122 { // Should be merged with PragmaDeclaration | |
| 2123 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 2124 //printf("body = %p\n", body); | |
| 2125 if (ident == Id::msg) | |
| 2126 { | |
| 2127 if (args) | |
| 2128 { | |
| 2129 for (size_t i = 0; i < args->dim; i++) | |
| 2130 { | |
| 2131 Expression *e = (Expression *)args->data[i]; | |
| 2132 | |
| 2133 e = e->semantic(sc); | |
| 2134 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2135 if (e->op == TOKstring) | |
| 2136 { | |
| 2137 StringExp *se = (StringExp *)e; | |
| 2138 fprintf(stdmsg, "%.*s", (int)se->len, se->string); | |
| 2139 } | |
| 2140 else | |
| 2141 error("string expected for message, not '%s'", e->toChars()); | |
| 2142 } | |
| 2143 fprintf(stdmsg, "\n"); | |
| 2144 } | |
| 2145 } | |
| 2146 else if (ident == Id::lib) | |
| 2147 { | |
| 2148 if (!args || args->dim != 1) | |
| 2149 error("string expected for library name"); | |
| 2150 else | |
| 2151 { | |
| 2152 Expression *e = (Expression *)args->data[0]; | |
| 2153 | |
| 2154 e = e->semantic(sc); | |
| 2155 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2156 args->data[0] = (void *)e; | |
| 2157 if (e->op != TOKstring) | |
| 2158 error("string expected for library name, not '%s'", e->toChars()); | |
| 2159 else if (global.params.verbose) | |
| 2160 { | |
| 2161 StringExp *se = (StringExp *)e; | |
| 2162 char *name = (char *)mem.malloc(se->len + 1); | |
| 2163 memcpy(name, se->string, se->len); | |
| 2164 name[se->len] = 0; | |
| 2165 printf("library %s\n", name); | |
| 2166 mem.free(name); | |
| 2167 } | |
| 2168 } | |
| 2169 } | |
| 2170 else | |
| 2171 error("unrecognized pragma(%s)", ident->toChars()); | |
| 2172 | |
| 2173 if (body) | |
| 2174 { | |
| 2175 body = body->semantic(sc); | |
| 2176 } | |
| 2177 return body; | |
| 2178 } | |
| 2179 | |
| 2180 int PragmaStatement::usesEH() | |
| 2181 { | |
| 2182 return body && body->usesEH(); | |
| 2183 } | |
| 2184 | |
| 336 | 2185 int PragmaStatement::blockExit() |
| 2186 { | |
| 2187 int result = BEfallthru; | |
| 2188 #if 0 // currently, no code is generated for Pragma's, so it's just fallthru | |
| 2189 if (arrayExpressionCanThrow(args)) | |
| 2190 result |= BEthrow; | |
| 2191 if (body) | |
| 2192 result |= body->blockExit(); | |
| 2193 #endif | |
| 2194 return result; | |
| 2195 } | |
| 2196 | |
| 159 | 2197 int PragmaStatement::fallOffEnd() |
| 2198 { | |
| 2199 if (body) | |
| 2200 return body->fallOffEnd(); | |
| 2201 return TRUE; | |
| 2202 } | |
| 2203 | |
| 2204 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2205 { | |
| 2206 buf->writestring("pragma ("); | |
| 2207 buf->writestring(ident->toChars()); | |
| 2208 if (args && args->dim) | |
| 2209 { | |
| 2210 buf->writestring(", "); | |
| 2211 argsToCBuffer(buf, args, hgs); | |
| 2212 } | |
| 2213 buf->writeByte(')'); | |
| 2214 if (body) | |
| 2215 { | |
| 2216 buf->writenl(); | |
| 2217 buf->writeByte('{'); | |
| 2218 buf->writenl(); | |
| 2219 | |
| 2220 body->toCBuffer(buf, hgs); | |
| 2221 | |
| 2222 buf->writeByte('}'); | |
| 2223 buf->writenl(); | |
| 2224 } | |
| 2225 else | |
| 2226 { | |
| 2227 buf->writeByte(';'); | |
| 2228 buf->writenl(); | |
| 2229 } | |
| 2230 } | |
| 2231 | |
| 2232 | |
| 2233 /******************************** StaticAssertStatement ***************************/ | |
| 2234 | |
| 2235 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 2236 : Statement(sa->loc) | |
| 2237 { | |
| 2238 this->sa = sa; | |
| 2239 } | |
| 2240 | |
| 2241 Statement *StaticAssertStatement::syntaxCopy() | |
| 2242 { | |
| 2243 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 2244 return s; | |
| 2245 } | |
| 2246 | |
| 2247 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 2248 { | |
| 2249 sa->semantic2(sc); | |
| 2250 return NULL; | |
| 2251 } | |
| 2252 | |
| 2253 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2254 { | |
| 2255 sa->toCBuffer(buf, hgs); | |
| 2256 } | |
| 2257 | |
| 2258 | |
| 2259 /******************************** SwitchStatement ***************************/ | |
| 2260 | |
| 2261 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 2262 : Statement(loc) | |
| 2263 { | |
| 2264 condition = c; | |
| 2265 body = b; | |
| 2266 sdefault = NULL; | |
| 2267 cases = NULL; | |
| 2268 hasNoDefault = 0; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
2269 // LDC |
| 309 | 2270 enclosinghandler = NULL; |
| 159 | 2271 } |
| 2272 | |
| 2273 Statement *SwitchStatement::syntaxCopy() | |
| 2274 { | |
| 2275 SwitchStatement *s = new SwitchStatement(loc, | |
| 2276 condition->syntaxCopy(), body->syntaxCopy()); | |
| 2277 return s; | |
| 2278 } | |
| 2279 | |
| 2280 Statement *SwitchStatement::semantic(Scope *sc) | |
| 2281 { | |
| 2282 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 2283 assert(!cases); // ensure semantic() is only run once | |
| 2284 | |
| 309 | 2285 enclosinghandler = sc->tfOfTry; |
| 159 | 2286 |
| 2287 condition = condition->semantic(sc); | |
| 2288 condition = resolveProperties(sc, condition); | |
| 2289 if (condition->type->isString()) | |
| 2290 { | |
| 2291 // If it's not an array, cast it to one | |
| 2292 if (condition->type->ty != Tarray) | |
| 2293 { | |
| 2294 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2295 } | |
| 2296 } | |
| 2297 else | |
| 2298 { condition = condition->integralPromotions(sc); | |
| 2299 condition->checkIntegral(); | |
| 2300 } | |
| 2301 condition = condition->optimize(WANTvalue); | |
| 2302 | |
| 2303 sc = sc->push(); | |
| 2304 sc->sbreak = this; | |
| 2305 sc->sw = this; | |
| 2306 | |
| 2307 cases = new Array(); | |
| 2308 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2309 body = body->semantic(sc); | |
| 2310 sc->noctor--; | |
| 2311 | |
| 2312 // Resolve any goto case's with exp | |
| 2313 for (int i = 0; i < gotoCases.dim; i++) | |
| 2314 { | |
| 2315 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2316 | |
| 2317 if (!gcs->exp) | |
| 2318 { | |
| 2319 gcs->error("no case statement following goto case;"); | |
| 2320 break; | |
| 2321 } | |
| 2322 | |
| 2323 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2324 { | |
| 2325 if (!scx->sw) | |
| 2326 continue; | |
| 2327 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2328 { | |
| 2329 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2330 | |
| 2331 if (cs->exp->equals(gcs->exp)) | |
| 2332 { | |
| 2333 gcs->cs = cs; | |
| 2334 goto Lfoundcase; | |
| 2335 } | |
| 2336 } | |
| 2337 } | |
| 2338 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2339 | |
| 2340 Lfoundcase: | |
| 2341 ; | |
| 2342 } | |
| 2343 | |
| 2344 if (!sc->sw->sdefault) | |
| 2345 { hasNoDefault = 1; | |
| 2346 | |
| 2347 if (global.params.warnings) | |
|
215
a58d8f4b84df
[svn r231] Changed: warnings are no longer treated as an error.
lindquist
parents:
159
diff
changeset
|
2348 { warning("%s: switch statement has no default", loc.toChars()); |
| 159 | 2349 } |
| 2350 | |
| 2351 // Generate runtime error if the default is hit | |
| 2352 Statements *a = new Statements(); | |
| 2353 CompoundStatement *cs; | |
| 2354 Statement *s; | |
| 2355 | |
| 2356 if (global.params.useSwitchError) | |
| 2357 s = new SwitchErrorStatement(loc); | |
| 2358 else | |
| 2359 { Expression *e = new HaltExp(loc); | |
| 2360 s = new ExpStatement(loc, e); | |
| 2361 } | |
| 2362 | |
| 2363 a->reserve(4); | |
| 2364 a->push(body); | |
| 2365 a->push(new BreakStatement(loc, NULL)); | |
| 2366 sc->sw->sdefault = new DefaultStatement(loc, s); | |
| 2367 a->push(sc->sw->sdefault); | |
| 2368 cs = new CompoundStatement(loc, a); | |
| 2369 body = cs; | |
| 2370 } | |
| 2371 | |
| 2372 sc->pop(); | |
| 2373 return this; | |
| 2374 } | |
| 2375 | |
| 2376 int SwitchStatement::hasBreak() | |
| 2377 { | |
| 2378 return TRUE; | |
| 2379 } | |
| 2380 | |
| 2381 int SwitchStatement::usesEH() | |
| 2382 { | |
| 2383 return body ? body->usesEH() : 0; | |
| 2384 } | |
| 2385 | |
| 336 | 2386 int SwitchStatement::blockExit() |
| 2387 { int result = BEnone; | |
| 2388 if (condition->canThrow()) | |
| 2389 result |= BEthrow; | |
| 2390 | |
| 2391 if (body) | |
| 2392 { result |= body->blockExit(); | |
| 2393 if (result & BEbreak) | |
| 2394 { result |= BEfallthru; | |
| 2395 result &= ~BEbreak; | |
| 2396 } | |
| 2397 } | |
| 2398 else | |
| 2399 result |= BEfallthru; | |
| 2400 | |
| 2401 return result; | |
| 2402 } | |
| 2403 | |
| 159 | 2404 int SwitchStatement::fallOffEnd() |
| 2405 { | |
| 2406 if (body) | |
| 2407 body->fallOffEnd(); | |
| 2408 return TRUE; // need to do this better | |
| 2409 } | |
| 2410 | |
| 2411 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2412 { | |
| 2413 buf->writestring("switch ("); | |
| 2414 condition->toCBuffer(buf, hgs); | |
| 2415 buf->writebyte(')'); | |
| 2416 buf->writenl(); | |
| 2417 if (body) | |
| 2418 { | |
| 2419 if (!body->isScopeStatement()) | |
| 2420 { buf->writebyte('{'); | |
| 2421 buf->writenl(); | |
| 2422 body->toCBuffer(buf, hgs); | |
| 2423 buf->writebyte('}'); | |
| 2424 buf->writenl(); | |
| 2425 } | |
| 2426 else | |
| 2427 { | |
| 2428 body->toCBuffer(buf, hgs); | |
| 2429 } | |
| 2430 } | |
| 2431 } | |
| 2432 | |
| 2433 /******************************** CaseStatement ***************************/ | |
| 2434 | |
| 2435 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2436 : Statement(loc) | |
| 2437 { | |
| 2438 this->exp = exp; | |
| 2439 this->statement = s; | |
| 2440 cblock = NULL; | |
| 2441 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
|
2442 llvmIdx = NULL; |
| 159 | 2443 } |
| 2444 | |
| 2445 Statement *CaseStatement::syntaxCopy() | |
| 2446 { | |
| 2447 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2448 return s; | |
| 2449 } | |
| 2450 | |
| 2451 Statement *CaseStatement::semantic(Scope *sc) | |
| 2452 { SwitchStatement *sw = sc->sw; | |
| 2453 | |
| 2454 //printf("CaseStatement::semantic() %s\n", toChars()); | |
| 2455 exp = exp->semantic(sc); | |
| 2456 if (sw) | |
| 2457 { int i; | |
| 2458 | |
| 2459 exp = exp->implicitCastTo(sc, sw->condition->type); | |
| 2460 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2461 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2462 { | |
| 2463 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2464 exp = new IntegerExp(0); | |
| 2465 } | |
| 2466 | |
| 2467 for (i = 0; i < sw->cases->dim; i++) | |
| 2468 { | |
| 2469 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2470 | |
| 2471 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2472 if (cs->exp->equals(exp)) | |
| 2473 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2474 break; | |
| 2475 } | |
| 2476 } | |
| 2477 | |
| 2478 sw->cases->push(this); | |
| 2479 | |
| 2480 // Resolve any goto case's with no exp to this case statement | |
| 2481 for (i = 0; i < sw->gotoCases.dim; i++) | |
| 2482 { | |
| 2483 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2484 | |
| 2485 if (!gcs->exp) | |
| 2486 { | |
| 2487 gcs->cs = this; | |
| 2488 sw->gotoCases.remove(i); // remove from array | |
| 2489 } | |
| 2490 } | |
| 2491 } | |
| 2492 else | |
| 2493 error("case not in switch statement"); | |
| 2494 statement = statement->semantic(sc); | |
| 2495 return this; | |
| 2496 } | |
| 2497 | |
| 2498 int CaseStatement::compare(Object *obj) | |
| 2499 { | |
| 2500 // Sort cases so we can do an efficient lookup | |
| 2501 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2502 | |
| 2503 return exp->compare(cs2->exp); | |
| 2504 } | |
| 2505 | |
| 2506 int CaseStatement::usesEH() | |
| 2507 { | |
| 2508 return statement->usesEH(); | |
| 2509 } | |
| 2510 | |
| 336 | 2511 int CaseStatement::blockExit() |
| 2512 { | |
| 2513 return statement->blockExit(); | |
| 2514 } | |
| 2515 | |
| 159 | 2516 int CaseStatement::fallOffEnd() |
| 2517 { | |
| 2518 return statement->fallOffEnd(); | |
| 2519 } | |
| 2520 | |
| 2521 int CaseStatement::comeFrom() | |
| 2522 { | |
| 2523 return TRUE; | |
| 2524 } | |
| 2525 | |
| 2526 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2527 { | |
| 2528 buf->writestring("case "); | |
| 2529 exp->toCBuffer(buf, hgs); | |
| 2530 buf->writebyte(':'); | |
| 2531 buf->writenl(); | |
| 2532 statement->toCBuffer(buf, hgs); | |
| 2533 } | |
| 2534 | |
| 2535 /******************************** DefaultStatement ***************************/ | |
| 2536 | |
| 2537 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 2538 : Statement(loc) | |
| 2539 { | |
| 2540 this->statement = s; | |
| 2541 #if IN_GCC | |
| 2542 + cblock = NULL; | |
| 2543 #endif | |
| 2544 bodyBB = NULL; | |
| 2545 } | |
| 2546 | |
| 2547 Statement *DefaultStatement::syntaxCopy() | |
| 2548 { | |
| 2549 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 2550 return s; | |
| 2551 } | |
| 2552 | |
| 2553 Statement *DefaultStatement::semantic(Scope *sc) | |
| 2554 { | |
| 336 | 2555 //printf("DefaultStatement::semantic()\n"); |
| 159 | 2556 if (sc->sw) |
| 2557 { | |
| 2558 if (sc->sw->sdefault) | |
| 2559 { | |
| 2560 error("switch statement already has a default"); | |
| 2561 } | |
| 2562 sc->sw->sdefault = this; | |
| 2563 } | |
| 2564 else | |
| 2565 error("default not in switch statement"); | |
| 2566 statement = statement->semantic(sc); | |
| 2567 return this; | |
| 2568 } | |
| 2569 | |
| 2570 int DefaultStatement::usesEH() | |
| 2571 { | |
| 2572 return statement->usesEH(); | |
| 2573 } | |
| 2574 | |
| 336 | 2575 int DefaultStatement::blockExit() |
| 2576 { | |
| 2577 return statement->blockExit(); | |
| 2578 } | |
| 2579 | |
| 159 | 2580 int DefaultStatement::fallOffEnd() |
| 2581 { | |
| 2582 return statement->fallOffEnd(); | |
| 2583 } | |
| 2584 | |
| 2585 int DefaultStatement::comeFrom() | |
| 2586 { | |
| 2587 return TRUE; | |
| 2588 } | |
| 2589 | |
| 2590 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2591 { | |
| 2592 buf->writestring("default:\n"); | |
| 2593 statement->toCBuffer(buf, hgs); | |
| 2594 } | |
| 2595 | |
| 2596 /******************************** GotoDefaultStatement ***************************/ | |
| 2597 | |
| 2598 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 2599 : Statement(loc) | |
| 2600 { | |
| 2601 sw = NULL; | |
| 309 | 2602 enclosinghandler = NULL; |
| 159 | 2603 } |
| 2604 | |
| 2605 Statement *GotoDefaultStatement::syntaxCopy() | |
| 2606 { | |
| 2607 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 2608 return s; | |
| 2609 } | |
| 2610 | |
| 2611 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 2612 { | |
| 309 | 2613 enclosinghandler = sc->tfOfTry; |
| 159 | 2614 sw = sc->sw; |
| 2615 if (!sw) | |
| 2616 error("goto default not in switch statement"); | |
| 2617 return this; | |
| 2618 } | |
| 2619 | |
| 336 | 2620 int GotoDefaultStatement::blockExit() |
| 2621 { | |
| 2622 return BEgoto; | |
| 2623 } | |
| 2624 | |
| 159 | 2625 int GotoDefaultStatement::fallOffEnd() |
| 2626 { | |
| 2627 return FALSE; | |
| 2628 } | |
| 2629 | |
| 2630 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2631 { | |
| 2632 buf->writestring("goto default;\n"); | |
| 2633 } | |
| 2634 | |
| 2635 /******************************** GotoCaseStatement ***************************/ | |
| 2636 | |
| 2637 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 2638 : Statement(loc) | |
| 2639 { | |
| 2640 cs = NULL; | |
| 2641 this->exp = exp; | |
| 309 | 2642 enclosinghandler = NULL; |
| 159 | 2643 sw = NULL; |
| 2644 } | |
| 2645 | |
| 2646 Statement *GotoCaseStatement::syntaxCopy() | |
| 2647 { | |
| 2648 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 2649 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 2650 return s; | |
| 2651 } | |
| 2652 | |
| 2653 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 2654 { | |
| 309 | 2655 enclosinghandler = sc->tfOfTry; |
| 159 | 2656 if (exp) |
| 2657 exp = exp->semantic(sc); | |
| 2658 | |
| 2659 if (!sc->sw) | |
| 2660 error("goto case not in switch statement"); | |
| 2661 else | |
| 2662 { | |
| 2663 sw = sc->sw; | |
| 2664 sc->sw->gotoCases.push(this); | |
| 2665 if (exp) | |
| 2666 { | |
| 2667 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 2668 exp = exp->optimize(WANTvalue); | |
| 2669 } | |
| 2670 } | |
| 2671 return this; | |
| 2672 } | |
| 2673 | |
| 336 | 2674 int GotoCaseStatement::blockExit() |
| 2675 { | |
| 2676 return BEgoto; | |
| 2677 } | |
| 2678 | |
| 159 | 2679 int GotoCaseStatement::fallOffEnd() |
| 2680 { | |
| 2681 return FALSE; | |
| 2682 } | |
| 2683 | |
| 2684 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2685 { | |
| 2686 buf->writestring("goto case"); | |
| 2687 if (exp) | |
| 2688 { buf->writebyte(' '); | |
| 2689 exp->toCBuffer(buf, hgs); | |
| 2690 } | |
| 2691 buf->writebyte(';'); | |
| 2692 buf->writenl(); | |
| 2693 } | |
| 2694 | |
| 2695 /******************************** SwitchErrorStatement ***************************/ | |
| 2696 | |
| 2697 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 2698 : Statement(loc) | |
| 2699 { | |
| 2700 } | |
| 2701 | |
| 336 | 2702 int SwitchErrorStatement::blockExit() |
| 2703 { | |
| 2704 return BEthrow; | |
| 2705 } | |
| 2706 | |
| 159 | 2707 int SwitchErrorStatement::fallOffEnd() |
| 2708 { | |
| 2709 return FALSE; | |
| 2710 } | |
| 2711 | |
| 2712 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2713 { | |
| 2714 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 2715 buf->writenl(); | |
| 2716 } | |
| 2717 | |
| 2718 /******************************** ReturnStatement ***************************/ | |
| 2719 | |
| 2720 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 2721 : Statement(loc) | |
| 2722 { | |
| 2723 this->exp = exp; | |
| 309 | 2724 this->enclosinghandler = NULL; |
| 159 | 2725 } |
| 2726 | |
| 2727 Statement *ReturnStatement::syntaxCopy() | |
| 2728 { | |
| 2729 Expression *e = NULL; | |
| 2730 if (exp) | |
| 2731 e = exp->syntaxCopy(); | |
| 2732 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 2733 return s; | |
| 2734 } | |
| 2735 | |
| 2736 Statement *ReturnStatement::semantic(Scope *sc) | |
| 2737 { | |
| 2738 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 309 | 2739 this->enclosinghandler = sc->tfOfTry; |
| 159 | 2740 |
| 2741 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 2742 Scope *scx = sc; | |
| 2743 int implicit0 = 0; | |
| 2744 | |
| 2745 if (sc->fes) | |
| 2746 { | |
| 2747 // Find scope of function foreach is in | |
| 2748 for (; 1; scx = scx->enclosing) | |
| 2749 { | |
| 2750 assert(scx); | |
| 2751 if (scx->func != fd) | |
| 2752 { fd = scx->func; // fd is now function enclosing foreach | |
| 2753 break; | |
| 2754 } | |
| 2755 } | |
| 2756 } | |
| 2757 | |
| 2758 Type *tret = fd->type->nextOf(); | |
| 2759 if (fd->tintro) | |
| 336 | 2760 /* We'll be implicitly casting the return expression to tintro |
| 2761 */ | |
| 159 | 2762 tret = fd->tintro->nextOf(); |
| 2763 Type *tbret = NULL; | |
| 2764 | |
| 2765 if (tret) | |
| 2766 tbret = tret->toBasetype(); | |
| 2767 | |
| 2768 // main() returns 0, even if it returns void | |
| 2769 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 2770 { implicit0 = 1; | |
| 2771 exp = new IntegerExp(0); | |
| 2772 } | |
| 2773 | |
| 2774 if (sc->incontract || scx->incontract) | |
| 2775 error("return statements cannot be in contracts"); | |
| 2776 if (sc->tf || scx->tf) | |
| 2777 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); | |
| 2778 | |
| 2779 if (fd->isCtorDeclaration()) | |
| 2780 { | |
| 2781 // Constructors implicitly do: | |
| 2782 // return this; | |
| 2783 if (exp && exp->op != TOKthis) | |
| 2784 error("cannot return expression from constructor"); | |
| 2785 exp = new ThisExp(0); | |
| 2786 } | |
| 2787 | |
| 2788 if (!exp) | |
| 2789 fd->nrvo_can = 0; | |
| 2790 | |
| 2791 if (exp) | |
| 2792 { | |
| 2793 fd->hasReturnExp |= 1; | |
| 2794 | |
| 2795 exp = exp->semantic(sc); | |
| 2796 exp = resolveProperties(sc, exp); | |
| 2797 exp = exp->optimize(WANTvalue); | |
| 2798 | |
| 2799 if (fd->nrvo_can && exp->op == TOKvar) | |
| 2800 { VarExp *ve = (VarExp *)exp; | |
| 2801 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 2802 | |
| 2803 if (!v || v->isOut() || v->isRef()) | |
| 2804 fd->nrvo_can = 0; | |
| 2805 else if (fd->nrvo_var == NULL) | |
| 2806 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 2807 fd->nrvo_var = v; | |
| 2808 else | |
| 2809 fd->nrvo_can = 0; | |
| 2810 } | |
| 2811 else if (fd->nrvo_var != v) | |
| 2812 fd->nrvo_can = 0; | |
| 2813 } | |
| 2814 else | |
| 2815 fd->nrvo_can = 0; | |
| 2816 | |
| 2817 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2818 { | |
| 2819 } | |
| 2820 else if (fd->inferRetType) | |
| 2821 { | |
| 2822 if (fd->type->nextOf()) | |
| 2823 { | |
| 2824 if (!exp->type->equals(fd->type->nextOf())) | |
| 2825 error("mismatched function return type inference of %s and %s", | |
| 2826 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 2827 } | |
| 2828 else | |
| 2829 { | |
| 2830 fd->type->next = exp->type; | |
| 2831 fd->type = fd->type->semantic(loc, sc); | |
| 2832 if (!fd->tintro) | |
| 2833 { tret = fd->type->nextOf(); | |
| 2834 tbret = tret->toBasetype(); | |
| 2835 } | |
| 2836 } | |
| 2837 } | |
| 2838 else if (tbret->ty != Tvoid) | |
| 2839 { | |
| 2840 exp = exp->implicitCastTo(sc, tret); | |
| 2841 } | |
| 2842 } | |
| 2843 else if (fd->inferRetType) | |
| 2844 { | |
| 2845 if (fd->type->nextOf()) | |
| 2846 { | |
| 2847 if (fd->type->nextOf()->ty != Tvoid) | |
| 2848 error("mismatched function return type inference of void and %s", | |
| 2849 fd->type->nextOf()->toChars()); | |
| 2850 } | |
| 2851 else | |
| 2852 { | |
| 2853 fd->type->next = Type::tvoid; | |
| 2854 fd->type = fd->type->semantic(loc, sc); | |
| 2855 if (!fd->tintro) | |
| 2856 { tret = Type::tvoid; | |
| 2857 tbret = tret; | |
| 2858 } | |
| 2859 } | |
| 2860 } | |
| 2861 else if (tbret->ty != Tvoid) // if non-void return | |
| 2862 error("return expression expected"); | |
| 2863 | |
| 2864 if (sc->fes) | |
| 2865 { | |
| 2866 Statement *s; | |
| 2867 | |
| 2868 if (exp && !implicit0) | |
| 2869 { | |
| 2870 exp = exp->implicitCastTo(sc, tret); | |
| 2871 } | |
| 2872 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 2873 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 2874 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 2875 exp->op == TOKstring) | |
| 2876 { | |
| 2877 sc->fes->cases.push(this); | |
| 2878 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2879 } | |
| 2880 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 2881 { | |
| 2882 Statement *s1; | |
| 2883 Statement *s2; | |
| 2884 | |
| 2885 s = new ReturnStatement(0, NULL); | |
| 2886 sc->fes->cases.push(s); | |
| 2887 | |
| 2888 // Construct: { exp; return cases.dim + 1; } | |
| 2889 s1 = new ExpStatement(loc, exp); | |
| 2890 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2891 s = new CompoundStatement(loc, s1, s2); | |
| 2892 } | |
| 2893 else | |
| 2894 { | |
| 2895 VarExp *v; | |
| 2896 Statement *s1; | |
| 2897 Statement *s2; | |
| 2898 | |
| 2899 // Construct: return vresult; | |
| 2900 if (!fd->vresult) | |
| 2901 { VarDeclaration *v; | |
| 2902 | |
| 2903 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 2904 v->noauto = 1; | |
| 2905 v->semantic(scx); | |
| 2906 if (!scx->insert(v)) | |
| 2907 assert(0); | |
| 2908 v->parent = fd; | |
| 2909 fd->vresult = v; | |
| 2910 } | |
| 2911 | |
| 2912 v = new VarExp(0, fd->vresult); | |
| 2913 s = new ReturnStatement(0, v); | |
| 2914 sc->fes->cases.push(s); | |
| 2915 | |
| 2916 // Construct: { vresult = exp; return cases.dim + 1; } | |
| 2917 v = new VarExp(0, fd->vresult); | |
| 2918 exp = new AssignExp(loc, v, exp); | |
| 2919 exp = exp->semantic(sc); | |
| 2920 s1 = new ExpStatement(loc, exp); | |
| 2921 s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2922 s = new CompoundStatement(loc, s1, s2); | |
| 2923 } | |
| 2924 return s; | |
| 2925 } | |
| 2926 | |
| 2927 if (exp) | |
| 2928 { | |
| 2929 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2930 { | |
| 2931 assert(fd->vresult); | |
| 2932 VarExp *v = new VarExp(0, fd->vresult); | |
| 2933 | |
| 2934 exp = new AssignExp(loc, v, exp); | |
| 2935 exp = exp->semantic(sc); | |
| 2936 } | |
| 2937 //exp->dump(0); | |
| 2938 //exp->print(); | |
| 2939 exp->checkEscape(); | |
| 2940 } | |
| 2941 | |
| 2942 /* BUG: need to issue an error on: | |
| 2943 * this | |
| 2944 * { if (x) return; | |
| 2945 * super(); | |
| 2946 * } | |
| 2947 */ | |
| 2948 | |
| 2949 if (sc->callSuper & CSXany_ctor && | |
| 2950 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 2951 error("return without calling constructor"); | |
| 2952 | |
| 2953 sc->callSuper |= CSXreturn; | |
| 2954 | |
| 2955 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 2956 if (fd->returnLabel) | |
| 2957 { | |
| 2958 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 2959 | |
| 2960 gs->label = fd->returnLabel; | |
| 2961 if (exp) | |
| 2962 { Statement *s; | |
| 2963 | |
| 2964 s = new ExpStatement(0, exp); | |
| 2965 return new CompoundStatement(loc, s, gs); | |
| 2966 } | |
| 2967 return gs; | |
| 2968 } | |
| 2969 | |
| 2970 if (exp && tbret->ty == Tvoid && !fd->isMain()) | |
| 336 | 2971 { |
| 2972 /* Replace: | |
| 2973 * return exp; | |
| 2974 * with: | |
| 2975 * exp; return; | |
| 2976 */ | |
| 2977 Statement *s = new ExpStatement(loc, exp); | |
| 159 | 2978 loc = 0; |
| 2979 exp = NULL; | |
| 2980 return new CompoundStatement(loc, s, this); | |
| 2981 } | |
| 2982 | |
| 2983 return this; | |
| 2984 } | |
| 2985 | |
| 336 | 2986 int ReturnStatement::blockExit() |
| 2987 { int result = BEreturn; | |
| 2988 | |
| 2989 if (exp && exp->canThrow()) | |
| 2990 result |= BEthrow; | |
| 2991 return result; | |
| 2992 } | |
| 2993 | |
| 159 | 2994 int ReturnStatement::fallOffEnd() |
| 2995 { | |
| 2996 return FALSE; | |
| 2997 } | |
| 2998 | |
| 2999 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3000 { | |
| 3001 buf->printf("return "); | |
| 3002 if (exp) | |
| 3003 exp->toCBuffer(buf, hgs); | |
| 3004 buf->writeByte(';'); | |
| 3005 buf->writenl(); | |
| 3006 } | |
| 3007 | |
| 3008 /******************************** BreakStatement ***************************/ | |
| 3009 | |
| 3010 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 3011 : Statement(loc) | |
| 3012 { | |
| 3013 this->ident = ident; | |
| 309 | 3014 this->enclosinghandler = NULL; |
| 159 | 3015 } |
| 3016 | |
| 3017 Statement *BreakStatement::syntaxCopy() | |
| 3018 { | |
| 3019 BreakStatement *s = new BreakStatement(loc, ident); | |
| 3020 return s; | |
| 3021 } | |
| 3022 | |
| 3023 Statement *BreakStatement::semantic(Scope *sc) | |
| 3024 { | |
| 336 | 3025 //printf("BreakStatement::semantic()\n"); |
| 309 | 3026 enclosinghandler = sc->tfOfTry; |
| 159 | 3027 // If: |
| 3028 // break Identifier; | |
| 3029 if (ident) | |
| 3030 { | |
| 3031 Scope *scx; | |
| 3032 FuncDeclaration *thisfunc = sc->func; | |
| 3033 | |
| 3034 for (scx = sc; scx; scx = scx->enclosing) | |
| 3035 { | |
| 3036 LabelStatement *ls; | |
| 3037 | |
| 3038 if (scx->func != thisfunc) // if in enclosing function | |
| 3039 { | |
| 3040 if (sc->fes) // if this is the body of a foreach | |
| 3041 { | |
| 3042 /* Post this statement to the fes, and replace | |
| 3043 * it with a return value that caller will put into | |
| 3044 * a switch. Caller will figure out where the break | |
| 3045 * label actually is. | |
| 3046 * Case numbers start with 2, not 0, as 0 is continue | |
| 3047 * and 1 is break. | |
| 3048 */ | |
| 3049 Statement *s; | |
| 3050 sc->fes->cases.push(this); | |
| 3051 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3052 return s; | |
| 3053 } | |
| 3054 break; // can't break to it | |
| 3055 } | |
| 3056 | |
| 3057 ls = scx->slabel; | |
| 3058 if (ls && ls->ident == ident) | |
| 3059 { | |
| 3060 Statement *s = ls->statement; | |
| 3061 | |
| 3062 if (!s->hasBreak()) | |
| 3063 error("label '%s' has no break", ident->toChars()); | |
| 3064 if (ls->tf != sc->tf) | |
| 3065 error("cannot break out of finally block"); | |
| 3066 | |
| 3067 this->target = ls; | |
| 3068 return this; | |
| 3069 } | |
| 3070 } | |
| 3071 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 3072 } | |
| 3073 else if (!sc->sbreak) | |
| 3074 { | |
| 3075 if (sc->fes) | |
| 3076 { Statement *s; | |
| 3077 | |
| 3078 // Replace break; with return 1; | |
| 3079 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 3080 return s; | |
| 3081 } | |
| 3082 error("break is not inside a loop or switch"); | |
| 3083 } | |
| 3084 return this; | |
| 3085 } | |
| 3086 | |
| 336 | 3087 int BreakStatement::blockExit() |
| 3088 { | |
| 3089 //printf("BreakStatement::blockExit(%p) = x%x\n", this, ident ? BEgoto : BEbreak); | |
| 3090 return ident ? BEgoto : BEbreak; | |
| 3091 } | |
| 3092 | |
| 159 | 3093 int BreakStatement::fallOffEnd() |
| 3094 { | |
| 3095 return FALSE; | |
| 3096 } | |
| 3097 | |
| 3098 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3099 { | |
| 3100 buf->writestring("break"); | |
| 3101 if (ident) | |
| 3102 { buf->writebyte(' '); | |
| 3103 buf->writestring(ident->toChars()); | |
| 3104 } | |
| 3105 buf->writebyte(';'); | |
| 3106 buf->writenl(); | |
| 3107 } | |
| 3108 | |
| 3109 /******************************** ContinueStatement ***************************/ | |
| 3110 | |
| 3111 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 3112 : Statement(loc) | |
| 3113 { | |
| 3114 this->ident = ident; | |
| 309 | 3115 this->enclosinghandler = NULL; |
| 159 | 3116 } |
| 3117 | |
| 3118 Statement *ContinueStatement::syntaxCopy() | |
| 3119 { | |
| 3120 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 3121 return s; | |
| 3122 } | |
| 3123 | |
| 3124 Statement *ContinueStatement::semantic(Scope *sc) | |
| 3125 { | |
| 309 | 3126 enclosinghandler = sc->tfOfTry; |
| 159 | 3127 //printf("ContinueStatement::semantic() %p\n", this); |
| 3128 if (ident) | |
| 3129 { | |
| 3130 Scope *scx; | |
| 3131 FuncDeclaration *thisfunc = sc->func; | |
| 3132 | |
| 3133 for (scx = sc; scx; scx = scx->enclosing) | |
| 3134 { | |
| 3135 LabelStatement *ls; | |
| 3136 | |
| 3137 if (scx->func != thisfunc) // if in enclosing function | |
| 3138 { | |
| 3139 if (sc->fes) // if this is the body of a foreach | |
| 3140 { | |
| 3141 for (; scx; scx = scx->enclosing) | |
| 3142 { | |
| 3143 ls = scx->slabel; | |
| 3144 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 3145 { | |
| 3146 // Replace continue ident; with return 0; | |
| 3147 return new ReturnStatement(0, new IntegerExp(0)); | |
| 3148 } | |
| 3149 } | |
| 3150 | |
| 3151 /* Post this statement to the fes, and replace | |
| 3152 * it with a return value that caller will put into | |
| 3153 * a switch. Caller will figure out where the break | |
| 3154 * label actually is. | |
| 3155 * Case numbers start with 2, not 0, as 0 is continue | |
| 3156 * and 1 is break. | |
| 3157 */ | |
| 3158 Statement *s; | |
| 3159 sc->fes->cases.push(this); | |
| 3160 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3161 return s; | |
| 3162 } | |
| 3163 break; // can't continue to it | |
| 3164 } | |
| 3165 | |
| 3166 ls = scx->slabel; | |
| 3167 if (ls && ls->ident == ident) | |
| 3168 { | |
| 3169 Statement *s = ls->statement; | |
| 3170 | |
| 3171 if (!s->hasContinue()) | |
| 3172 error("label '%s' has no continue", ident->toChars()); | |
| 3173 if (ls->tf != sc->tf) | |
| 3174 error("cannot continue out of finally block"); | |
| 3175 | |
| 3176 this->target = ls; | |
| 3177 return this; | |
| 3178 } | |
| 3179 } | |
| 3180 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 3181 } | |
| 3182 else if (!sc->scontinue) | |
| 3183 { | |
| 3184 if (sc->fes) | |
| 3185 { Statement *s; | |
| 3186 | |
| 3187 // Replace continue; with return 0; | |
| 3188 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 3189 return s; | |
| 3190 } | |
| 3191 error("continue is not inside a loop"); | |
| 3192 } | |
| 3193 return this; | |
| 3194 } | |
| 3195 | |
| 336 | 3196 int ContinueStatement::blockExit() |
| 3197 { | |
| 3198 return ident ? BEgoto : BEcontinue; | |
| 3199 } | |
| 3200 | |
| 159 | 3201 int ContinueStatement::fallOffEnd() |
| 3202 { | |
| 3203 return FALSE; | |
| 3204 } | |
| 3205 | |
| 3206 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3207 { | |
| 3208 buf->writestring("continue"); | |
| 3209 if (ident) | |
| 3210 { buf->writebyte(' '); | |
| 3211 buf->writestring(ident->toChars()); | |
| 3212 } | |
| 3213 buf->writebyte(';'); | |
| 3214 buf->writenl(); | |
| 3215 } | |
| 3216 | |
| 3217 /******************************** SynchronizedStatement ***************************/ | |
| 3218 | |
| 3219 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 3220 : Statement(loc) | |
| 3221 { | |
| 3222 this->exp = exp; | |
| 3223 this->body = body; | |
| 3224 this->esync = NULL; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
3225 this->enclosinghandler = NULL; |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3226 // LDC |
| 309 | 3227 this->llsync = NULL; |
| 159 | 3228 } |
| 3229 | |
| 3230 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 3231 : Statement(loc) | |
| 3232 { | |
| 3233 this->exp = NULL; | |
| 3234 this->body = body; | |
| 3235 this->esync = esync; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
3236 this->enclosinghandler = NULL; |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3237 // LDC |
| 309 | 3238 this->llsync = NULL; |
| 159 | 3239 } |
| 3240 | |
| 3241 Statement *SynchronizedStatement::syntaxCopy() | |
| 3242 { | |
| 3243 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3244 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 3245 return s; | |
| 3246 } | |
| 3247 | |
| 3248 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 3249 { | |
| 3250 if (exp) | |
| 3251 { ClassDeclaration *cd; | |
| 3252 | |
| 3253 exp = exp->semantic(sc); | |
| 3254 exp = resolveProperties(sc, exp); | |
| 3255 cd = exp->type->isClassHandle(); | |
| 3256 if (!cd) | |
| 3257 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 3258 else if (cd->isInterfaceDeclaration()) | |
| 3259 { Type *t = new TypeIdentifier(0, Id::Object); | |
| 3260 | |
| 3261 t = t->semantic(0, sc); | |
| 3262 exp = new CastExp(loc, exp, t); | |
| 3263 exp = exp->semantic(sc); | |
| 3264 } | |
| 3265 } | |
| 3266 if (body) | |
| 309 | 3267 { |
| 3268 enclosinghandler = sc->tfOfTry; | |
| 3269 sc->tfOfTry = new EnclosingSynchro(this); | |
| 3270 body = body->semantic(sc); | |
| 3271 sc->tfOfTry = enclosinghandler; | |
| 3272 } | |
| 159 | 3273 return this; |
| 3274 } | |
| 3275 | |
| 3276 int SynchronizedStatement::hasBreak() | |
| 3277 { | |
| 3278 return FALSE; //TRUE; | |
| 3279 } | |
| 3280 | |
| 3281 int SynchronizedStatement::hasContinue() | |
| 3282 { | |
| 3283 return FALSE; //TRUE; | |
| 3284 } | |
| 3285 | |
| 3286 int SynchronizedStatement::usesEH() | |
| 3287 { | |
| 3288 return TRUE; | |
| 3289 } | |
| 3290 | |
| 336 | 3291 int SynchronizedStatement::blockExit() |
| 3292 { | |
| 3293 return body ? body->blockExit() : BEfallthru; | |
| 3294 } | |
| 3295 | |
| 159 | 3296 int SynchronizedStatement::fallOffEnd() |
| 3297 { | |
| 3298 return body ? body->fallOffEnd() : TRUE; | |
| 3299 } | |
| 3300 | |
| 3301 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3302 { | |
| 3303 buf->writestring("synchronized"); | |
| 3304 if (exp) | |
| 3305 { buf->writebyte('('); | |
| 3306 exp->toCBuffer(buf, hgs); | |
| 3307 buf->writebyte(')'); | |
| 3308 } | |
| 3309 if (body) | |
| 3310 { | |
| 3311 buf->writebyte(' '); | |
| 3312 body->toCBuffer(buf, hgs); | |
| 3313 } | |
| 3314 } | |
| 3315 | |
| 3316 /******************************** WithStatement ***************************/ | |
| 3317 | |
| 3318 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 3319 : Statement(loc) | |
| 3320 { | |
| 3321 this->exp = exp; | |
| 3322 this->body = body; | |
| 3323 wthis = NULL; | |
| 3324 } | |
| 3325 | |
| 3326 Statement *WithStatement::syntaxCopy() | |
| 3327 { | |
| 3328 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 3329 return s; | |
| 3330 } | |
| 3331 | |
| 3332 Statement *WithStatement::semantic(Scope *sc) | |
| 3333 { ScopeDsymbol *sym; | |
| 3334 Initializer *init; | |
| 3335 | |
| 3336 //printf("WithStatement::semantic()\n"); | |
| 3337 exp = exp->semantic(sc); | |
| 3338 exp = resolveProperties(sc, exp); | |
| 3339 if (exp->op == TOKimport) | |
| 3340 { ScopeExp *es = (ScopeExp *)exp; | |
| 3341 | |
| 3342 sym = es->sds; | |
| 3343 } | |
| 3344 else if (exp->op == TOKtype) | |
| 3345 { TypeExp *es = (TypeExp *)exp; | |
| 3346 | |
| 3347 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 3348 if (!sym) | |
| 3349 { error("%s has no members", es->toChars()); | |
| 3350 body = body->semantic(sc); | |
| 3351 return this; | |
| 3352 } | |
| 3353 } | |
| 3354 else | |
| 3355 { Type *t = exp->type; | |
| 3356 | |
| 3357 assert(t); | |
| 3358 t = t->toBasetype(); | |
| 3359 if (t->isClassHandle()) | |
| 3360 { | |
| 3361 init = new ExpInitializer(loc, exp); | |
| 3362 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3363 wthis->semantic(sc); | |
| 3364 | |
| 3365 sym = new WithScopeSymbol(this); | |
| 3366 sym->parent = sc->scopesym; | |
| 3367 } | |
| 3368 else if (t->ty == Tstruct) | |
| 3369 { | |
| 3370 Expression *e = exp->addressOf(sc); | |
| 3371 init = new ExpInitializer(loc, e); | |
| 3372 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3373 wthis->semantic(sc); | |
| 3374 sym = new WithScopeSymbol(this); | |
| 3375 sym->parent = sc->scopesym; | |
| 3376 } | |
| 3377 else | |
| 3378 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3379 return NULL; | |
| 3380 } | |
| 3381 } | |
| 3382 sc = sc->push(sym); | |
| 3383 | |
| 3384 if (body) | |
| 3385 body = body->semantic(sc); | |
| 3386 | |
| 3387 sc->pop(); | |
| 3388 | |
| 3389 return this; | |
| 3390 } | |
| 3391 | |
| 3392 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3393 { | |
| 3394 buf->writestring("with ("); | |
| 3395 exp->toCBuffer(buf, hgs); | |
| 3396 buf->writestring(")\n"); | |
| 3397 if (body) | |
| 3398 body->toCBuffer(buf, hgs); | |
| 3399 } | |
| 3400 | |
| 3401 int WithStatement::usesEH() | |
| 3402 { | |
| 3403 return body ? body->usesEH() : 0; | |
| 3404 } | |
| 3405 | |
| 336 | 3406 int WithStatement::blockExit() |
| 3407 { | |
| 3408 int result = BEnone; | |
| 3409 if (exp->canThrow()) | |
| 3410 result = BEthrow; | |
| 3411 if (body) | |
| 3412 result |= body->blockExit(); | |
| 3413 else | |
| 3414 result |= BEfallthru; | |
| 3415 return result; | |
| 3416 } | |
| 3417 | |
| 159 | 3418 int WithStatement::fallOffEnd() |
| 3419 { | |
| 3420 return body ? body->fallOffEnd() : TRUE; | |
| 3421 } | |
| 3422 | |
| 3423 /******************************** TryCatchStatement ***************************/ | |
| 3424 | |
| 3425 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3426 : Statement(loc) | |
| 3427 { | |
| 3428 this->body = body; | |
| 3429 this->catches = catches; | |
| 3430 } | |
| 3431 | |
| 3432 Statement *TryCatchStatement::syntaxCopy() | |
| 3433 { | |
| 3434 Array *a = new Array(); | |
| 3435 a->setDim(catches->dim); | |
| 3436 for (int i = 0; i < a->dim; i++) | |
| 3437 { Catch *c; | |
| 3438 | |
| 3439 c = (Catch *)catches->data[i]; | |
| 3440 c = c->syntaxCopy(); | |
| 3441 a->data[i] = c; | |
| 3442 } | |
| 3443 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3444 return s; | |
| 3445 } | |
| 3446 | |
| 3447 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3448 { | |
| 3449 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3450 | |
| 336 | 3451 /* Even if body is NULL, still do semantic analysis on catches |
| 3452 */ | |
| 3453 for (size_t i = 0; i < catches->dim; i++) | |
| 3454 { Catch *c = (Catch *)catches->data[i]; | |
| 159 | 3455 c->semantic(sc); |
| 3456 | |
| 3457 // Determine if current catch 'hides' any previous catches | |
| 336 | 3458 for (size_t j = 0; j < i; j++) |
| 159 | 3459 { Catch *cj = (Catch *)catches->data[j]; |
| 3460 char *si = c->loc.toChars(); | |
| 3461 char *sj = cj->loc.toChars(); | |
| 3462 | |
| 3463 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3464 error("catch at %s hides catch at %s", sj, si); | |
| 3465 } | |
| 3466 } | |
| 3467 return this; | |
| 3468 } | |
| 3469 | |
| 3470 int TryCatchStatement::hasBreak() | |
| 3471 { | |
| 3472 return FALSE; //TRUE; | |
| 3473 } | |
| 3474 | |
| 3475 int TryCatchStatement::usesEH() | |
| 3476 { | |
| 3477 return TRUE; | |
| 3478 } | |
| 3479 | |
| 336 | 3480 int TryCatchStatement::blockExit() |
| 3481 { int result; | |
| 3482 | |
| 3483 assert(body); | |
| 3484 result = body->blockExit(); | |
| 3485 | |
| 3486 for (size_t i = 0; i < catches->dim; i++) | |
| 3487 { | |
| 3488 Catch *c = (Catch *)catches->data[i]; | |
| 3489 result |= c->blockExit(); | |
| 3490 } | |
| 3491 return result; | |
| 3492 } | |
| 3493 | |
| 159 | 3494 int TryCatchStatement::fallOffEnd() |
| 3495 { | |
| 3496 int result = FALSE; | |
| 3497 | |
| 3498 if (body) | |
| 3499 result = body->fallOffEnd(); | |
| 3500 for (int i = 0; i < catches->dim; i++) | |
| 3501 { Catch *c; | |
| 3502 | |
| 3503 c = (Catch *)catches->data[i]; | |
| 3504 if (c->handler) | |
| 3505 result |= c->handler->fallOffEnd(); | |
| 3506 } | |
| 3507 return result; | |
| 3508 } | |
| 3509 | |
| 3510 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3511 { | |
| 3512 buf->writestring("try"); | |
| 3513 buf->writenl(); | |
| 3514 if (body) | |
| 3515 body->toCBuffer(buf, hgs); | |
| 336 | 3516 for (size_t i = 0; i < catches->dim; i++) |
| 159 | 3517 { |
| 3518 Catch *c = (Catch *)catches->data[i]; | |
| 3519 c->toCBuffer(buf, hgs); | |
| 3520 } | |
| 3521 } | |
| 3522 | |
| 3523 /******************************** Catch ***************************/ | |
| 3524 | |
| 3525 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 3526 { | |
| 3527 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 3528 this->loc = loc; | |
| 3529 this->type = t; | |
| 3530 this->ident = id; | |
| 3531 this->handler = handler; | |
| 3532 var = NULL; | |
| 3533 } | |
| 3534 | |
| 3535 Catch *Catch::syntaxCopy() | |
| 3536 { | |
| 3537 Catch *c = new Catch(loc, | |
| 3538 (type ? type->syntaxCopy() : NULL), | |
| 3539 ident, | |
| 3540 (handler ? handler->syntaxCopy() : NULL)); | |
| 3541 return c; | |
| 3542 } | |
| 3543 | |
| 3544 void Catch::semantic(Scope *sc) | |
| 3545 { ScopeDsymbol *sym; | |
| 3546 | |
| 3547 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 3548 | |
| 3549 #ifndef IN_GCC | |
| 3550 if (sc->tf) | |
| 3551 { | |
| 3552 /* This is because the _d_local_unwind() gets the stack munged | |
| 3553 * up on this. The workaround is to place any try-catches into | |
| 3554 * a separate function, and call that. | |
| 3555 * To fix, have the compiler automatically convert the finally | |
| 3556 * body into a nested function. | |
| 3557 */ | |
| 3558 error(loc, "cannot put catch statement inside finally block"); | |
| 3559 } | |
| 3560 #endif | |
| 3561 | |
| 3562 sym = new ScopeDsymbol(); | |
| 3563 sym->parent = sc->scopesym; | |
| 3564 sc = sc->push(sym); | |
| 3565 | |
| 3566 if (!type) | |
| 3567 type = new TypeIdentifier(0, Id::Object); | |
| 3568 type = type->semantic(loc, sc); | |
| 3569 if (!type->toBasetype()->isClassHandle()) | |
| 3570 error("can only catch class objects, not '%s'", type->toChars()); | |
| 3571 else if (ident) | |
| 3572 { | |
| 3573 var = new VarDeclaration(loc, type, ident, NULL); | |
| 3574 var->parent = sc->parent; | |
| 3575 sc->insert(var); | |
| 3576 } | |
| 3577 handler = handler->semantic(sc); | |
| 3578 | |
| 3579 sc->pop(); | |
| 3580 } | |
| 3581 | |
| 336 | 3582 int Catch::blockExit() |
| 3583 { | |
| 3584 return handler ? handler->blockExit() : BEfallthru; | |
| 3585 } | |
| 3586 | |
| 159 | 3587 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3588 { | |
| 3589 buf->writestring("catch"); | |
| 3590 if (type) | |
| 3591 { buf->writebyte('('); | |
| 3592 type->toCBuffer(buf, ident, hgs); | |
| 3593 buf->writebyte(')'); | |
| 3594 } | |
| 3595 buf->writenl(); | |
| 3596 buf->writebyte('{'); | |
| 3597 buf->writenl(); | |
| 336 | 3598 if (handler) |
| 3599 handler->toCBuffer(buf, hgs); | |
| 159 | 3600 buf->writebyte('}'); |
| 3601 buf->writenl(); | |
| 3602 } | |
| 3603 | |
| 3604 /****************************** TryFinallyStatement ***************************/ | |
| 3605 | |
| 3606 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 3607 : Statement(loc) | |
| 3608 { | |
| 3609 this->body = body; | |
| 3610 this->finalbody = finalbody; | |
| 309 | 3611 this->enclosinghandler = NULL; |
| 159 | 3612 } |
| 3613 | |
| 3614 Statement *TryFinallyStatement::syntaxCopy() | |
| 3615 { | |
| 3616 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 3617 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 3618 return s; | |
| 3619 } | |
| 3620 | |
| 3621 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 3622 { | |
| 3623 //printf("TryFinallyStatement::semantic()\n"); | |
| 3624 | |
| 309 | 3625 enclosinghandler = sc->tfOfTry; |
| 3626 sc->tfOfTry = new EnclosingTryFinally(this); | |
| 159 | 3627 body = body->semantic(sc); |
| 309 | 3628 sc->tfOfTry = enclosinghandler; |
| 159 | 3629 |
| 3630 sc = sc->push(); | |
| 3631 sc->tf = this; | |
| 3632 sc->sbreak = NULL; | |
| 3633 sc->scontinue = NULL; // no break or continue out of finally block | |
| 3634 finalbody = finalbody->semantic(sc); | |
| 3635 sc->pop(); | |
| 3636 return this; | |
| 3637 } | |
| 3638 | |
| 3639 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3640 { | |
| 3641 buf->printf("try\n{\n"); | |
| 3642 body->toCBuffer(buf, hgs); | |
| 3643 buf->printf("}\nfinally\n{\n"); | |
| 3644 finalbody->toCBuffer(buf, hgs); | |
| 3645 buf->writeByte('}'); | |
| 3646 buf->writenl(); | |
| 3647 } | |
| 3648 | |
| 3649 int TryFinallyStatement::hasBreak() | |
| 3650 { | |
| 3651 return FALSE; //TRUE; | |
| 3652 } | |
| 3653 | |
| 3654 int TryFinallyStatement::hasContinue() | |
| 3655 { | |
| 3656 return FALSE; //TRUE; | |
| 3657 } | |
| 3658 | |
| 3659 int TryFinallyStatement::usesEH() | |
| 3660 { | |
| 3661 return TRUE; | |
| 3662 } | |
| 3663 | |
| 336 | 3664 int TryFinallyStatement::blockExit() |
| 3665 { | |
| 3666 int result = body->blockExit(); | |
| 3667 return result; | |
| 3668 } | |
| 3669 | |
| 159 | 3670 int TryFinallyStatement::fallOffEnd() |
| 3671 { int result; | |
| 3672 | |
| 3673 result = body ? body->fallOffEnd() : TRUE; | |
| 3674 // if (finalbody) | |
| 3675 // result = finalbody->fallOffEnd(); | |
| 3676 return result; | |
| 3677 } | |
| 3678 | |
| 3679 /****************************** OnScopeStatement ***************************/ | |
| 3680 | |
| 3681 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 3682 : Statement(loc) | |
| 3683 { | |
| 3684 this->tok = tok; | |
| 3685 this->statement = statement; | |
| 3686 } | |
| 3687 | |
| 3688 Statement *OnScopeStatement::syntaxCopy() | |
| 3689 { | |
| 3690 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 3691 tok, statement->syntaxCopy()); | |
| 3692 return s; | |
| 3693 } | |
| 3694 | |
| 3695 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 3696 { | |
| 3697 /* semantic is called on results of scopeCode() */ | |
| 3698 return this; | |
| 3699 } | |
| 3700 | |
| 336 | 3701 int OnScopeStatement::blockExit() |
| 3702 { // At this point, this statement is just an empty placeholder | |
| 3703 return BEfallthru; | |
| 3704 } | |
| 3705 | |
| 159 | 3706 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3707 { | |
| 3708 buf->writestring(Token::toChars(tok)); | |
| 3709 buf->writebyte(' '); | |
| 3710 statement->toCBuffer(buf, hgs); | |
| 3711 } | |
| 3712 | |
| 3713 int OnScopeStatement::usesEH() | |
| 3714 { | |
| 3715 return (tok != TOKon_scope_success); | |
| 3716 } | |
| 3717 | |
| 3718 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 3719 { | |
| 3720 //printf("OnScopeStatement::scopeCode()\n"); | |
| 3721 //print(); | |
| 3722 *sentry = NULL; | |
| 3723 *sexception = NULL; | |
| 3724 *sfinally = NULL; | |
| 3725 switch (tok) | |
| 3726 { | |
| 3727 case TOKon_scope_exit: | |
| 3728 *sfinally = statement; | |
| 3729 break; | |
| 3730 | |
| 3731 case TOKon_scope_failure: | |
| 3732 *sexception = statement; | |
| 3733 break; | |
| 3734 | |
| 3735 case TOKon_scope_success: | |
| 3736 { | |
| 3737 /* Create: | |
| 3738 * sentry: int x = 0; | |
| 3739 * sexception: x = 1; | |
| 3740 * sfinally: if (!x) statement; | |
| 3741 */ | |
| 3742 static int num; | |
| 3743 char name[5 + sizeof(num) * 3 + 1]; | |
| 3744 sprintf(name, "__osf%d", ++num); | |
| 3745 Identifier *id = Lexer::idPool(name); | |
| 3746 | |
| 3747 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 3748 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 3749 *sentry = new DeclarationStatement(loc, v); | |
| 3750 | |
| 3751 Expression *e = new IntegerExp(1); | |
| 3752 e = new AssignExp(0, new VarExp(0, v), e); | |
| 3753 *sexception = new ExpStatement(0, e); | |
| 3754 | |
| 3755 e = new VarExp(0, v); | |
| 3756 e = new NotExp(0, e); | |
| 3757 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 3758 | |
| 3759 break; | |
| 3760 } | |
| 3761 | |
| 3762 default: | |
| 3763 assert(0); | |
| 3764 } | |
| 3765 } | |
| 3766 | |
| 3767 /******************************** ThrowStatement ***************************/ | |
| 3768 | |
| 3769 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 3770 : Statement(loc) | |
| 3771 { | |
| 3772 this->exp = exp; | |
| 3773 } | |
| 3774 | |
| 3775 Statement *ThrowStatement::syntaxCopy() | |
| 3776 { | |
| 3777 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 3778 return s; | |
| 3779 } | |
| 3780 | |
| 3781 Statement *ThrowStatement::semantic(Scope *sc) | |
| 3782 { | |
| 3783 //printf("ThrowStatement::semantic()\n"); | |
| 3784 | |
| 3785 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3786 fd->hasReturnExp |= 2; | |
| 3787 | |
| 3788 if (sc->incontract) | |
| 3789 error("Throw statements cannot be in contracts"); | |
| 3790 exp = exp->semantic(sc); | |
| 3791 exp = resolveProperties(sc, exp); | |
| 3792 if (!exp->type->toBasetype()->isClassHandle()) | |
| 3793 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 3794 return this; | |
| 3795 } | |
| 3796 | |
| 336 | 3797 int ThrowStatement::blockExit() |
| 3798 { | |
| 3799 return BEthrow; // obviously | |
| 3800 } | |
| 3801 | |
| 159 | 3802 int ThrowStatement::fallOffEnd() |
| 3803 { | |
| 3804 return FALSE; | |
| 3805 } | |
| 3806 | |
| 3807 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3808 { | |
| 3809 buf->printf("throw "); | |
| 3810 exp->toCBuffer(buf, hgs); | |
| 3811 buf->writeByte(';'); | |
| 3812 buf->writenl(); | |
| 3813 } | |
| 3814 | |
| 3815 /******************************** VolatileStatement **************************/ | |
| 3816 | |
| 3817 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 3818 : Statement(loc) | |
| 3819 { | |
| 3820 this->statement = statement; | |
| 309 | 3821 this->enclosinghandler = NULL; |
| 159 | 3822 } |
| 3823 | |
| 3824 Statement *VolatileStatement::syntaxCopy() | |
| 3825 { | |
| 3826 VolatileStatement *s = new VolatileStatement(loc, | |
| 3827 statement ? statement->syntaxCopy() : NULL); | |
| 3828 return s; | |
| 3829 } | |
| 3830 | |
| 3831 Statement *VolatileStatement::semantic(Scope *sc) | |
| 3832 { | |
| 309 | 3833 if (statement) |
| 3834 { | |
| 3835 enclosinghandler = sc->tfOfTry; | |
| 3836 sc->tfOfTry = new EnclosingVolatile(this); | |
| 3837 statement = statement->semantic(sc); | |
| 3838 sc->tfOfTry = enclosinghandler; | |
| 3839 } | |
| 159 | 3840 return this; |
| 3841 } | |
| 3842 | |
| 3843 Statements *VolatileStatement::flatten(Scope *sc) | |
| 3844 { | |
| 3845 Statements *a; | |
| 3846 | |
| 3847 a = statement ? statement->flatten(sc) : NULL; | |
| 3848 if (a) | |
| 3849 { for (int i = 0; i < a->dim; i++) | |
| 3850 { Statement *s = (Statement *)a->data[i]; | |
| 3851 | |
| 3852 s = new VolatileStatement(loc, s); | |
| 3853 a->data[i] = s; | |
| 3854 } | |
| 3855 } | |
| 3856 | |
| 3857 return a; | |
| 3858 } | |
| 3859 | |
| 336 | 3860 int VolatileStatement::blockExit() |
| 3861 { | |
| 3862 return statement ? statement->blockExit() : BEfallthru; | |
| 3863 } | |
| 3864 | |
| 159 | 3865 int VolatileStatement::fallOffEnd() |
| 3866 { | |
| 3867 return statement ? statement->fallOffEnd() : TRUE; | |
| 3868 } | |
| 3869 | |
| 3870 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3871 { | |
| 3872 buf->writestring("volatile"); | |
| 3873 if (statement) | |
| 3874 { if (statement->isScopeStatement()) | |
| 3875 buf->writenl(); | |
| 3876 else | |
| 3877 buf->writebyte(' '); | |
| 3878 statement->toCBuffer(buf, hgs); | |
| 3879 } | |
| 3880 } | |
| 3881 | |
| 3882 | |
| 3883 /******************************** GotoStatement ***************************/ | |
| 3884 | |
| 3885 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 3886 : Statement(loc) | |
| 3887 { | |
| 3888 this->ident = ident; | |
| 3889 this->label = NULL; | |
| 3890 this->tf = NULL; | |
| 309 | 3891 this->enclosinghandler = NULL; |
| 159 | 3892 } |
| 3893 | |
| 3894 Statement *GotoStatement::syntaxCopy() | |
| 3895 { | |
| 3896 GotoStatement *s = new GotoStatement(loc, ident); | |
| 3897 return s; | |
| 3898 } | |
| 3899 | |
| 3900 Statement *GotoStatement::semantic(Scope *sc) | |
| 3901 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3902 | |
| 3903 //printf("GotoStatement::semantic()\n"); | |
| 3904 tf = sc->tf; | |
| 309 | 3905 enclosinghandler = sc->tfOfTry; |
| 159 | 3906 label = fd->searchLabel(ident); |
| 3907 if (!label->statement && sc->fes) | |
| 3908 { | |
| 3909 /* Either the goto label is forward referenced or it | |
| 3910 * is in the function that the enclosing foreach is in. | |
| 3911 * Can't know yet, so wrap the goto in a compound statement | |
| 3912 * so we can patch it later, and add it to a 'look at this later' | |
| 3913 * list. | |
| 3914 */ | |
| 3915 Statements *a = new Statements(); | |
| 3916 Statement *s; | |
| 3917 | |
| 3918 a->push(this); | |
| 3919 s = new CompoundStatement(loc, a); | |
| 3920 sc->fes->gotos.push(s); // 'look at this later' list | |
| 3921 return s; | |
| 3922 } | |
| 3923 if (label->statement && label->statement->tf != sc->tf) | |
| 3924 error("cannot goto in or out of finally block"); | |
| 3925 return this; | |
| 3926 } | |
| 3927 | |
| 336 | 3928 int GotoStatement::blockExit() |
| 3929 { | |
| 3930 //printf("GotoStatement::blockExit(%p)\n", this); | |
| 3931 return BEgoto; | |
| 3932 } | |
| 3933 | |
| 159 | 3934 int GotoStatement::fallOffEnd() |
| 3935 { | |
| 3936 return FALSE; | |
| 3937 } | |
| 3938 | |
| 3939 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3940 { | |
| 3941 buf->writestring("goto "); | |
| 3942 buf->writestring(ident->toChars()); | |
| 3943 buf->writebyte(';'); | |
| 3944 buf->writenl(); | |
| 3945 } | |
| 3946 | |
| 3947 /******************************** LabelStatement ***************************/ | |
| 3948 | |
| 3949 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 3950 : Statement(loc) | |
| 3951 { | |
| 3952 this->ident = ident; | |
| 3953 this->statement = statement; | |
| 3954 this->tf = NULL; | |
| 309 | 3955 this->enclosinghandler = NULL; |
| 159 | 3956 this->lblock = NULL; |
| 3957 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
|
3958 this->asmLabel = false; |
| 159 | 3959 } |
| 3960 | |
| 3961 Statement *LabelStatement::syntaxCopy() | |
| 3962 { | |
| 3963 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 3964 return s; | |
| 3965 } | |
| 3966 | |
| 3967 Statement *LabelStatement::semantic(Scope *sc) | |
| 3968 { LabelDsymbol *ls; | |
| 3969 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3970 | |
| 3971 //printf("LabelStatement::semantic()\n"); | |
| 3972 ls = fd->searchLabel(ident); | |
| 3973 if (ls->statement) | |
| 3974 error("Label '%s' already defined", ls->toChars()); | |
| 3975 else | |
| 3976 ls->statement = this; | |
| 3977 tf = sc->tf; | |
| 309 | 3978 enclosinghandler = sc->tfOfTry; |
| 159 | 3979 sc = sc->push(); |
| 3980 sc->scopesym = sc->enclosing->scopesym; | |
| 3981 sc->callSuper |= CSXlabel; | |
| 3982 sc->slabel = this; | |
| 3983 if (statement) | |
| 3984 statement = statement->semantic(sc); | |
| 3985 sc->pop(); | |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3986 |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3987 // LDC put in labmap |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3988 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
|
3989 |
| 159 | 3990 return this; |
| 3991 } | |
| 3992 | |
| 3993 Statements *LabelStatement::flatten(Scope *sc) | |
| 3994 { | |
| 3995 Statements *a = NULL; | |
| 3996 | |
| 3997 if (statement) | |
| 3998 { | |
| 3999 a = statement->flatten(sc); | |
| 4000 if (a) | |
| 4001 { | |
| 4002 if (!a->dim) | |
| 4003 { | |
| 4004 a->push(new ExpStatement(loc, NULL)); | |
| 4005 } | |
| 4006 Statement *s = (Statement *)a->data[0]; | |
| 4007 | |
| 4008 s = new LabelStatement(loc, ident, s); | |
| 4009 a->data[0] = s; | |
| 4010 } | |
| 4011 } | |
| 4012 | |
| 4013 return a; | |
| 4014 } | |
| 4015 | |
| 4016 | |
| 4017 int LabelStatement::usesEH() | |
| 4018 { | |
| 4019 return statement ? statement->usesEH() : FALSE; | |
| 4020 } | |
| 4021 | |
| 336 | 4022 int LabelStatement::blockExit() |
| 4023 { | |
| 4024 //printf("LabelStatement::blockExit(%p)\n", this); | |
| 4025 return statement ? statement->blockExit() : BEfallthru; | |
| 4026 } | |
| 4027 | |
| 159 | 4028 int LabelStatement::fallOffEnd() |
| 4029 { | |
| 4030 return statement ? statement->fallOffEnd() : TRUE; | |
| 4031 } | |
| 4032 | |
| 4033 int LabelStatement::comeFrom() | |
| 4034 { | |
| 4035 //printf("LabelStatement::comeFrom()\n"); | |
| 4036 return TRUE; | |
| 4037 } | |
| 4038 | |
| 4039 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4040 { | |
| 4041 buf->writestring(ident->toChars()); | |
| 4042 buf->writebyte(':'); | |
| 4043 buf->writenl(); | |
| 4044 if (statement) | |
| 4045 statement->toCBuffer(buf, hgs); | |
| 4046 } | |
| 4047 | |
| 4048 | |
| 4049 /******************************** LabelDsymbol ***************************/ | |
| 4050 | |
| 4051 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 4052 : Dsymbol(ident) | |
| 4053 { | |
| 4054 statement = NULL; | |
| 4055 } | |
| 4056 | |
| 4057 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 4058 { | |
| 4059 return this; | |
| 4060 } | |
| 4061 | |
| 4062 |