Mercurial > projects > ldc
annotate dmd/statement.c @ 846:bc982f1ad106
Merged DMD 1.037 frontend
| author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
|---|---|
| date | Sat, 13 Dec 2008 13:15:31 +0100 |
| parents | 661384d6a936 |
| children | 330f999ade44 |
| 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" | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
29 #include "template.h" |
| 159 | 30 |
| 31 /******************************** Statement ***************************/ | |
| 32 | |
| 33 Statement::Statement(Loc loc) | |
| 34 : loc(loc) | |
| 35 { | |
| 36 #ifdef _DH | |
| 37 // If this is an in{} contract scope statement (skip for determining | |
| 38 // inlineStatus of a function body for header content) | |
| 39 incontract = 0; | |
| 40 #endif | |
| 41 } | |
| 42 | |
| 43 Statement *Statement::syntaxCopy() | |
| 44 { | |
| 45 assert(0); | |
| 46 return NULL; | |
| 47 } | |
| 48 | |
| 49 void Statement::print() | |
| 50 { | |
| 51 fprintf(stdmsg, "%s\n", toChars()); | |
| 52 fflush(stdmsg); | |
| 53 } | |
| 54 | |
| 55 char *Statement::toChars() | |
| 56 { OutBuffer *buf; | |
| 57 HdrGenState hgs; | |
| 58 | |
| 59 buf = new OutBuffer(); | |
| 60 toCBuffer(buf, &hgs); | |
| 61 return buf->toChars(); | |
| 62 } | |
| 63 | |
| 64 void Statement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 65 { | |
| 66 buf->printf("Statement::toCBuffer()"); | |
| 67 buf->writenl(); | |
| 68 } | |
| 69 | |
| 70 Statement *Statement::semantic(Scope *sc) | |
| 71 { | |
| 72 return this; | |
| 73 } | |
| 74 | |
| 75 // Same as semantic(), but do create a new scope | |
| 76 | |
| 77 Statement *Statement::semanticScope(Scope *sc, Statement *sbreak, Statement *scontinue) | |
| 78 { Scope *scd; | |
| 79 Statement *s; | |
| 80 | |
| 81 scd = sc->push(); | |
| 82 if (sbreak) | |
| 83 scd->sbreak = sbreak; | |
| 84 if (scontinue) | |
| 85 scd->scontinue = scontinue; | |
| 86 s = semantic(scd); | |
| 87 scd->pop(); | |
| 88 return s; | |
| 89 } | |
| 90 | |
| 91 void Statement::error(const char *format, ...) | |
| 92 { | |
| 93 va_list ap; | |
| 94 va_start(ap, format); | |
| 95 ::verror(loc, format, ap); | |
| 96 va_end( ap ); | |
| 97 } | |
| 98 | |
| 99 int Statement::hasBreak() | |
| 100 { | |
| 101 //printf("Statement::hasBreak()\n"); | |
| 102 return FALSE; | |
| 103 } | |
| 104 | |
| 105 int Statement::hasContinue() | |
| 106 { | |
| 107 return FALSE; | |
| 108 } | |
| 109 | |
| 110 // TRUE if statement uses exception handling | |
| 111 | |
| 112 int Statement::usesEH() | |
| 113 { | |
| 114 return FALSE; | |
| 115 } | |
| 116 | |
| 336 | 117 /* Only valid after semantic analysis |
| 118 */ | |
| 119 int Statement::blockExit() | |
| 120 { | |
| 121 printf("Statement::blockExit(%p)\n", this); | |
| 122 printf("%s\n", toChars()); | |
| 123 assert(0); | |
| 124 return BEany; | |
| 125 } | |
| 126 | |
| 159 | 127 // TRUE if statement may fall off the end without a throw or return |
| 128 | |
| 129 int Statement::fallOffEnd() | |
| 130 { | |
| 131 return TRUE; | |
| 132 } | |
| 133 | |
| 134 // TRUE if statement 'comes from' somewhere else, like a goto | |
| 135 | |
| 136 int Statement::comeFrom() | |
| 137 { | |
| 138 //printf("Statement::comeFrom()\n"); | |
| 139 return FALSE; | |
| 140 } | |
| 141 | |
| 142 /**************************************** | |
| 143 * If this statement has code that needs to run in a finally clause | |
| 144 * at the end of the current scope, return that code in the form of | |
| 145 * a Statement. | |
| 146 * Output: | |
| 147 * *sentry code executed upon entry to the scope | |
| 148 * *sexception code executed upon exit from the scope via exception | |
| 149 * *sfinally code executed in finally block | |
| 150 */ | |
| 151 | |
| 152 void Statement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 153 { | |
| 154 //printf("Statement::scopeCode()\n"); | |
| 155 //print(); | |
| 156 *sentry = NULL; | |
| 157 *sexception = NULL; | |
| 158 *sfinally = NULL; | |
| 159 } | |
| 160 | |
| 161 /********************************* | |
| 162 * Flatten out the scope by presenting the statement | |
| 163 * as an array of statements. | |
| 164 * Returns NULL if no flattening necessary. | |
| 165 */ | |
| 166 | |
| 167 Statements *Statement::flatten(Scope *sc) | |
| 168 { | |
| 169 return NULL; | |
| 170 } | |
| 171 | |
| 172 | |
| 173 /******************************** ExpStatement ***************************/ | |
| 174 | |
| 175 ExpStatement::ExpStatement(Loc loc, Expression *exp) | |
| 176 : Statement(loc) | |
| 177 { | |
| 178 this->exp = exp; | |
| 179 } | |
| 180 | |
| 181 Statement *ExpStatement::syntaxCopy() | |
| 182 { | |
| 183 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 184 ExpStatement *es = new ExpStatement(loc, e); | |
| 185 return es; | |
| 186 } | |
| 187 | |
| 188 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 189 { | |
| 190 if (exp) | |
| 191 exp->toCBuffer(buf, hgs); | |
| 192 buf->writeByte(';'); | |
| 193 if (!hgs->FLinit.init) | |
| 194 buf->writenl(); | |
| 195 } | |
| 196 | |
| 197 Statement *ExpStatement::semantic(Scope *sc) | |
| 198 { | |
| 199 if (exp) | |
| 200 { | |
| 201 //printf("ExpStatement::semantic() %s\n", exp->toChars()); | |
| 202 exp = exp->semantic(sc); | |
| 203 exp = resolveProperties(sc, exp); | |
| 204 exp->checkSideEffect(0); | |
| 205 exp = exp->optimize(0); | |
| 206 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0); | |
| 207 } | |
| 208 return this; | |
| 209 } | |
| 210 | |
| 336 | 211 int ExpStatement::blockExit() |
| 212 { int result = BEfallthru; | |
| 213 | |
| 214 if (exp) | |
| 215 { | |
| 216 if (exp->op == TOKhalt) | |
| 217 return BEhalt; | |
| 218 if (exp->op == TOKassert) | |
| 219 { AssertExp *a = (AssertExp *)exp; | |
| 220 | |
| 221 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 222 return BEhalt; | |
| 223 } | |
| 224 if (exp->canThrow()) | |
| 225 result |= BEthrow; | |
| 226 } | |
| 227 return result; | |
| 228 } | |
| 229 | |
| 159 | 230 int ExpStatement::fallOffEnd() |
| 231 { | |
| 232 if (exp) | |
| 233 { | |
| 234 if (exp->op == TOKassert) | |
| 235 { AssertExp *a = (AssertExp *)exp; | |
| 236 | |
| 237 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 238 return FALSE; | |
| 239 } | |
| 240 else if (exp->op == TOKhalt) | |
| 241 return FALSE; | |
| 242 } | |
| 243 return TRUE; | |
| 244 } | |
| 245 | |
| 246 /******************************** CompileStatement ***************************/ | |
| 247 | |
| 248 CompileStatement::CompileStatement(Loc loc, Expression *exp) | |
| 249 : Statement(loc) | |
| 250 { | |
| 251 this->exp = exp; | |
| 252 } | |
| 253 | |
| 254 Statement *CompileStatement::syntaxCopy() | |
| 255 { | |
| 256 Expression *e = exp->syntaxCopy(); | |
| 257 CompileStatement *es = new CompileStatement(loc, e); | |
| 258 return es; | |
| 259 } | |
| 260 | |
| 261 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 262 { | |
| 263 buf->writestring("mixin("); | |
| 264 exp->toCBuffer(buf, hgs); | |
| 265 buf->writestring(");"); | |
| 266 if (!hgs->FLinit.init) | |
| 267 buf->writenl(); | |
| 268 } | |
| 269 | |
| 336 | 270 Statements *CompileStatement::flatten(Scope *sc) |
| 159 | 271 { |
| 336 | 272 //printf("CompileStatement::flatten() %s\n", exp->toChars()); |
| 159 | 273 exp = exp->semantic(sc); |
| 274 exp = resolveProperties(sc, exp); | |
| 275 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 276 if (exp->op != TOKstring) | |
| 277 { error("argument to mixin must be a string, not (%s)", exp->toChars()); | |
| 336 | 278 return NULL; |
| 159 | 279 } |
| 280 StringExp *se = (StringExp *)exp; | |
| 281 se = se->toUTF8(sc); | |
| 282 Parser p(sc->module, (unsigned char *)se->string, se->len, 0); | |
| 283 p.loc = loc; | |
| 284 p.nextToken(); | |
| 285 | |
| 336 | 286 Statements *a = new Statements(); |
| 159 | 287 while (p.token.value != TOKeof) |
| 288 { | |
| 289 Statement *s = p.parseStatement(PSsemi | PScurlyscope); | |
| 336 | 290 a->push(s); |
| 159 | 291 } |
| 336 | 292 return a; |
| 293 } | |
| 294 | |
| 295 Statement *CompileStatement::semantic(Scope *sc) | |
| 296 { | |
| 297 //printf("CompileStatement::semantic() %s\n", exp->toChars()); | |
| 298 Statements *a = flatten(sc); | |
| 299 if (!a) | |
| 300 return NULL; | |
| 301 Statement *s = new CompoundStatement(loc, a); | |
| 159 | 302 return s->semantic(sc); |
| 303 } | |
| 304 | |
| 305 | |
| 306 /******************************** DeclarationStatement ***************************/ | |
| 307 | |
| 308 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration) | |
| 309 : ExpStatement(loc, new DeclarationExp(loc, declaration)) | |
| 310 { | |
| 311 } | |
| 312 | |
| 313 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp) | |
| 314 : ExpStatement(loc, exp) | |
| 315 { | |
| 316 } | |
| 317 | |
| 318 Statement *DeclarationStatement::syntaxCopy() | |
| 319 { | |
| 320 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy()); | |
| 321 return ds; | |
| 322 } | |
| 323 | |
| 324 void DeclarationStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 325 { | |
| 326 //printf("DeclarationStatement::scopeCode()\n"); | |
| 327 //print(); | |
| 328 | |
| 329 *sentry = NULL; | |
| 330 *sexception = NULL; | |
| 331 *sfinally = NULL; | |
| 332 | |
| 333 if (exp) | |
| 334 { | |
| 335 if (exp->op == TOKdeclaration) | |
| 336 { | |
| 337 DeclarationExp *de = (DeclarationExp *)(exp); | |
| 338 VarDeclaration *v = de->declaration->isVarDeclaration(); | |
| 339 if (v) | |
| 340 { Expression *e; | |
| 341 | |
| 342 e = v->callAutoDtor(); | |
| 343 if (e) | |
| 344 { | |
| 345 //printf("dtor is: "); e->print(); | |
| 346 *sfinally = new ExpStatement(loc, e); | |
| 347 } | |
| 348 } | |
| 349 } | |
| 350 } | |
| 351 } | |
| 352 | |
| 353 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 354 { | |
| 355 exp->toCBuffer(buf, hgs); | |
| 356 } | |
| 357 | |
| 358 | |
| 359 /******************************** CompoundStatement ***************************/ | |
| 360 | |
| 361 CompoundStatement::CompoundStatement(Loc loc, Statements *s) | |
| 362 : Statement(loc) | |
| 363 { | |
| 364 statements = s; | |
| 365 } | |
| 366 | |
| 367 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2) | |
| 368 : Statement(loc) | |
| 369 { | |
| 370 statements = new Statements(); | |
| 371 statements->reserve(2); | |
| 372 statements->push(s1); | |
| 373 statements->push(s2); | |
| 374 } | |
| 375 | |
| 376 Statement *CompoundStatement::syntaxCopy() | |
| 377 { | |
| 378 Statements *a = new Statements(); | |
| 379 a->setDim(statements->dim); | |
| 380 for (size_t i = 0; i < statements->dim; i++) | |
| 381 { Statement *s = (Statement *)statements->data[i]; | |
| 382 if (s) | |
| 383 s = s->syntaxCopy(); | |
| 384 a->data[i] = s; | |
| 385 } | |
| 386 CompoundStatement *cs = new CompoundStatement(loc, a); | |
| 387 return cs; | |
| 388 } | |
| 389 | |
| 390 | |
| 391 Statement *CompoundStatement::semantic(Scope *sc) | |
| 392 { Statement *s; | |
| 393 | |
| 394 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 395 | |
| 396 for (size_t i = 0; i < statements->dim; ) | |
| 397 { | |
| 398 s = (Statement *) statements->data[i]; | |
| 399 if (s) | |
| 400 { Statements *a = s->flatten(sc); | |
| 401 | |
| 402 if (a) | |
| 403 { | |
| 404 statements->remove(i); | |
| 405 statements->insert(i, a); | |
| 406 continue; | |
| 407 } | |
| 408 s = s->semantic(sc); | |
| 409 statements->data[i] = s; | |
| 410 if (s) | |
| 411 { | |
| 412 Statement *sentry; | |
| 413 Statement *sexception; | |
| 414 Statement *sfinally; | |
| 415 | |
| 416 s->scopeCode(&sentry, &sexception, &sfinally); | |
| 417 if (sentry) | |
| 418 { | |
| 419 sentry = sentry->semantic(sc); | |
| 420 statements->data[i] = sentry; | |
| 421 } | |
| 422 if (sexception) | |
| 423 { | |
| 424 if (i + 1 == statements->dim && !sfinally) | |
| 425 { | |
| 426 #if 1 | |
| 427 sexception = sexception->semantic(sc); | |
| 428 #else | |
| 429 statements->push(sexception); | |
| 430 if (sfinally) | |
| 431 // Assume sexception does not throw | |
| 432 statements->push(sfinally); | |
| 433 #endif | |
| 434 } | |
| 435 else | |
| 436 { | |
| 437 /* Rewrite: | |
| 438 * s; s1; s2; | |
| 439 * As: | |
| 440 * s; | |
| 441 * try { s1; s2; } | |
| 442 * catch (Object __o) | |
| 443 * { sexception; throw __o; } | |
| 444 */ | |
| 445 Statement *body; | |
| 446 Statements *a = new Statements(); | |
| 447 | |
| 448 for (int j = i + 1; j < statements->dim; j++) | |
| 449 { | |
| 450 a->push(statements->data[j]); | |
| 451 } | |
| 452 body = new CompoundStatement(0, a); | |
| 453 body = new ScopeStatement(0, body); | |
| 454 | |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
455 Identifier *id = Lexer::uniqueId("__o"); |
| 159 | 456 |
| 457 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id)); | |
| 458 handler = new CompoundStatement(0, sexception, handler); | |
| 459 | |
| 460 Array *catches = new Array(); | |
| 461 Catch *ctch = new Catch(0, NULL, id, handler); | |
| 462 catches->push(ctch); | |
| 463 s = new TryCatchStatement(0, body, catches); | |
| 464 | |
| 465 if (sfinally) | |
| 466 s = new TryFinallyStatement(0, s, sfinally); | |
| 467 s = s->semantic(sc); | |
| 468 statements->setDim(i + 1); | |
| 469 statements->push(s); | |
| 470 break; | |
| 471 } | |
| 472 } | |
| 473 else if (sfinally) | |
| 474 { | |
| 475 if (0 && i + 1 == statements->dim) | |
| 476 { | |
| 477 statements->push(sfinally); | |
| 478 } | |
| 479 else | |
| 480 { | |
| 481 /* Rewrite: | |
| 482 * s; s1; s2; | |
| 483 * As: | |
| 484 * s; try { s1; s2; } finally { sfinally; } | |
| 485 */ | |
| 486 Statement *body; | |
| 487 Statements *a = new Statements(); | |
| 488 | |
| 489 for (int j = i + 1; j < statements->dim; j++) | |
| 490 { | |
| 491 a->push(statements->data[j]); | |
| 492 } | |
| 493 body = new CompoundStatement(0, a); | |
| 494 s = new TryFinallyStatement(0, body, sfinally); | |
| 495 s = s->semantic(sc); | |
| 496 statements->setDim(i + 1); | |
| 497 statements->push(s); | |
| 498 break; | |
| 499 } | |
| 500 } | |
| 501 } | |
| 502 } | |
| 503 i++; | |
| 504 } | |
|
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[svn r248] Fixed: labels in inline asm block now work for the normal case.
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|
505 if (statements->dim == 1 && !isAsmBlockStatement()) |
| 336 | 506 { |
| 507 return (Statement *)statements->data[0]; | |
| 508 } | |
| 159 | 509 return this; |
| 510 } | |
| 511 | |
| 512 Statements *CompoundStatement::flatten(Scope *sc) | |
| 513 { | |
| 514 return statements; | |
| 515 } | |
| 516 | |
| 517 ReturnStatement *CompoundStatement::isReturnStatement() | |
| 336 | 518 { |
| 159 | 519 ReturnStatement *rs = NULL; |
| 520 | |
| 336 | 521 for (int i = 0; i < statements->dim; i++) |
| 522 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 523 if (s) |
| 524 { | |
| 525 rs = s->isReturnStatement(); | |
| 526 if (rs) | |
| 527 break; | |
| 528 } | |
| 529 } | |
| 530 return rs; | |
| 531 } | |
| 532 | |
| 533 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 336 | 534 { |
| 535 for (int i = 0; i < statements->dim; i++) | |
| 536 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 537 if (s) |
| 538 s->toCBuffer(buf, hgs); | |
| 539 } | |
| 540 } | |
| 541 | |
| 542 int CompoundStatement::usesEH() | |
| 543 { | |
| 544 for (int i = 0; i < statements->dim; i++) | |
| 336 | 545 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 546 if (s && s->usesEH()) |
| 547 return TRUE; | |
| 548 } | |
| 549 return FALSE; | |
| 550 } | |
| 551 | |
| 336 | 552 int CompoundStatement::blockExit() |
| 553 { | |
| 554 //printf("CompoundStatement::blockExit(%p) %d\n", this, statements->dim); | |
| 555 int result = BEfallthru; | |
| 556 for (size_t i = 0; i < statements->dim; i++) | |
| 557 { Statement *s = (Statement *) statements->data[i]; | |
| 558 if (s) | |
| 559 { | |
| 560 //printf("result = x%x\n", result); | |
| 561 //printf("%s\n", s->toChars()); | |
| 562 if (!(result & BEfallthru) && !s->comeFrom()) | |
| 563 { | |
| 564 if (global.params.warnings) | |
| 565 { fprintf(stdmsg, "warning - "); | |
| 566 s->error("statement is not reachable"); | |
| 567 } | |
| 568 } | |
| 569 | |
| 570 result &= ~BEfallthru; | |
| 571 result |= s->blockExit(); | |
| 572 } | |
| 573 } | |
| 574 return result; | |
| 575 } | |
| 576 | |
| 159 | 577 int CompoundStatement::fallOffEnd() |
| 578 { int falloff = TRUE; | |
| 579 | |
| 580 //printf("CompoundStatement::fallOffEnd() %s\n", toChars()); | |
| 581 for (int i = 0; i < statements->dim; i++) | |
| 582 { Statement *s = (Statement *)statements->data[i]; | |
| 583 | |
| 584 if (!s) | |
| 585 continue; | |
| 586 | |
| 587 if (!falloff && global.params.warnings && !s->comeFrom()) | |
| 588 { | |
|
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589 warning("%s: statement is not reachable", s->loc.toChars()); |
| 159 | 590 } |
| 591 falloff = s->fallOffEnd(); | |
| 592 } | |
| 593 return falloff; | |
| 594 } | |
| 595 | |
| 596 int CompoundStatement::comeFrom() | |
| 597 { int comefrom = FALSE; | |
| 598 | |
| 599 //printf("CompoundStatement::comeFrom()\n"); | |
| 600 for (int i = 0; i < statements->dim; i++) | |
| 601 { Statement *s = (Statement *)statements->data[i]; | |
| 602 | |
| 603 if (!s) | |
| 604 continue; | |
| 605 | |
| 606 comefrom |= s->comeFrom(); | |
| 607 } | |
| 608 return comefrom; | |
| 609 } | |
| 610 | |
| 611 | |
| 612 /**************************** UnrolledLoopStatement ***************************/ | |
| 613 | |
| 614 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s) | |
| 615 : Statement(loc) | |
| 616 { | |
| 617 statements = s; | |
| 309 | 618 enclosinghandler = NULL; |
| 159 | 619 } |
| 620 | |
| 621 Statement *UnrolledLoopStatement::syntaxCopy() | |
| 622 { | |
| 623 Statements *a = new Statements(); | |
| 624 a->setDim(statements->dim); | |
| 625 for (size_t i = 0; i < statements->dim; i++) | |
| 626 { Statement *s = (Statement *)statements->data[i]; | |
| 627 if (s) | |
| 628 s = s->syntaxCopy(); | |
| 629 a->data[i] = s; | |
| 630 } | |
| 631 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
| 632 return cs; | |
| 633 } | |
| 634 | |
| 635 | |
| 636 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
| 637 { | |
| 638 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 639 | |
| 309 | 640 enclosinghandler = sc->tfOfTry; |
| 159 | 641 |
| 642 sc->noctor++; | |
| 643 Scope *scd = sc->push(); | |
| 644 scd->sbreak = this; | |
| 645 scd->scontinue = this; | |
| 646 | |
| 647 for (size_t i = 0; i < statements->dim; i++) | |
| 648 { | |
| 649 Statement *s = (Statement *) statements->data[i]; | |
| 650 if (s) | |
| 651 { | |
| 652 s = s->semantic(scd); | |
| 653 statements->data[i] = s; | |
| 654 } | |
| 655 } | |
| 656 | |
| 657 scd->pop(); | |
| 658 sc->noctor--; | |
| 659 return this; | |
| 660 } | |
| 661 | |
| 662 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 663 { | |
| 664 buf->writestring("unrolled {"); | |
| 665 buf->writenl(); | |
| 666 | |
| 667 for (size_t i = 0; i < statements->dim; i++) | |
| 668 { Statement *s; | |
| 669 | |
| 670 s = (Statement *) statements->data[i]; | |
| 671 if (s) | |
| 672 s->toCBuffer(buf, hgs); | |
| 673 } | |
| 674 | |
| 675 buf->writeByte('}'); | |
| 676 buf->writenl(); | |
| 677 } | |
| 678 | |
| 679 int UnrolledLoopStatement::hasBreak() | |
| 680 { | |
| 681 return TRUE; | |
| 682 } | |
| 683 | |
| 684 int UnrolledLoopStatement::hasContinue() | |
| 685 { | |
| 686 return TRUE; | |
| 687 } | |
| 688 | |
| 689 int UnrolledLoopStatement::usesEH() | |
| 690 { | |
| 691 for (size_t i = 0; i < statements->dim; i++) | |
| 336 | 692 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 693 if (s && s->usesEH()) |
| 694 return TRUE; | |
| 695 } | |
| 696 return FALSE; | |
| 697 } | |
| 698 | |
| 336 | 699 int UnrolledLoopStatement::blockExit() |
| 700 { | |
| 701 int result = BEfallthru; | |
| 702 for (size_t i = 0; i < statements->dim; i++) | |
| 703 { Statement *s = (Statement *) statements->data[i]; | |
| 704 if (s) | |
| 705 { | |
| 706 int r = s->blockExit(); | |
| 707 result |= r & ~(BEbreak | BEcontinue); | |
| 708 } | |
| 709 } | |
| 710 return result; | |
| 711 } | |
| 712 | |
| 159 | 713 int UnrolledLoopStatement::fallOffEnd() |
| 714 { | |
| 715 //printf("UnrolledLoopStatement::fallOffEnd()\n"); | |
| 716 for (size_t i = 0; i < statements->dim; i++) | |
| 717 { Statement *s = (Statement *)statements->data[i]; | |
| 718 | |
| 719 if (s) | |
| 720 s->fallOffEnd(); | |
| 721 } | |
| 722 return TRUE; | |
| 723 } | |
| 724 | |
| 725 int UnrolledLoopStatement::comeFrom() | |
| 726 { int comefrom = FALSE; | |
| 727 | |
| 728 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
| 729 for (size_t i = 0; i < statements->dim; i++) | |
| 730 { Statement *s = (Statement *)statements->data[i]; | |
| 731 | |
| 732 if (!s) | |
| 733 continue; | |
| 734 | |
| 735 comefrom |= s->comeFrom(); | |
| 736 } | |
| 737 return comefrom; | |
| 738 } | |
| 739 | |
| 740 | |
| 741 /******************************** ScopeStatement ***************************/ | |
| 742 | |
| 743 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
| 744 : Statement(loc) | |
| 745 { | |
| 746 this->statement = s; | |
| 747 } | |
| 748 | |
| 749 Statement *ScopeStatement::syntaxCopy() | |
| 750 { | |
| 751 Statement *s; | |
| 752 | |
| 753 s = statement ? statement->syntaxCopy() : NULL; | |
| 754 s = new ScopeStatement(loc, s); | |
| 755 return s; | |
| 756 } | |
| 757 | |
| 758 | |
| 759 Statement *ScopeStatement::semantic(Scope *sc) | |
| 760 { ScopeDsymbol *sym; | |
| 761 | |
| 762 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
| 763 if (statement) | |
| 764 { Statements *a; | |
| 765 | |
| 766 sym = new ScopeDsymbol(); | |
| 767 sym->parent = sc->scopesym; | |
| 768 sc = sc->push(sym); | |
| 769 | |
| 770 a = statement->flatten(sc); | |
| 771 if (a) | |
| 772 { | |
| 773 statement = new CompoundStatement(loc, a); | |
| 774 } | |
| 775 | |
| 776 statement = statement->semantic(sc); | |
| 777 if (statement) | |
| 778 { | |
| 779 Statement *sentry; | |
| 780 Statement *sexception; | |
| 781 Statement *sfinally; | |
| 782 | |
| 783 statement->scopeCode(&sentry, &sexception, &sfinally); | |
| 784 if (sfinally) | |
| 785 { | |
| 786 //printf("adding sfinally\n"); | |
| 787 statement = new CompoundStatement(loc, statement, sfinally); | |
| 788 } | |
| 789 } | |
| 790 | |
| 791 sc->pop(); | |
| 792 } | |
| 793 return this; | |
| 794 } | |
| 795 | |
| 796 int ScopeStatement::hasBreak() | |
| 797 { | |
| 798 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
| 799 return statement ? statement->hasBreak() : FALSE; | |
| 800 } | |
| 801 | |
| 802 int ScopeStatement::hasContinue() | |
| 803 { | |
| 804 return statement ? statement->hasContinue() : FALSE; | |
| 805 } | |
| 806 | |
| 807 int ScopeStatement::usesEH() | |
| 808 { | |
| 809 return statement ? statement->usesEH() : FALSE; | |
| 810 } | |
| 811 | |
| 336 | 812 int ScopeStatement::blockExit() |
| 813 { | |
| 814 //printf("ScopeStatement::blockExit(%p)\n", statement); | |
| 815 return statement ? statement->blockExit() : BEfallthru; | |
| 816 } | |
| 817 | |
| 159 | 818 int ScopeStatement::fallOffEnd() |
| 819 { | |
| 820 return statement ? statement->fallOffEnd() : TRUE; | |
| 821 } | |
| 822 | |
| 823 int ScopeStatement::comeFrom() | |
| 824 { | |
| 825 //printf("ScopeStatement::comeFrom()\n"); | |
| 826 return statement ? statement->comeFrom() : FALSE; | |
| 827 } | |
| 828 | |
| 829 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 830 { | |
| 831 buf->writeByte('{'); | |
| 832 buf->writenl(); | |
| 833 | |
| 834 if (statement) | |
| 835 statement->toCBuffer(buf, hgs); | |
| 836 | |
| 837 buf->writeByte('}'); | |
| 838 buf->writenl(); | |
| 839 } | |
| 840 | |
| 841 /******************************** WhileStatement ***************************/ | |
| 842 | |
| 843 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
| 844 : Statement(loc) | |
| 845 { | |
| 846 condition = c; | |
| 847 body = b; | |
| 309 | 848 enclosinghandler = NULL; |
| 159 | 849 } |
| 850 | |
| 851 Statement *WhileStatement::syntaxCopy() | |
| 852 { | |
| 853 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 854 return s; | |
| 855 } | |
| 856 | |
| 857 | |
| 858 Statement *WhileStatement::semantic(Scope *sc) | |
| 859 { | |
| 860 #if 0 | |
| 861 if (condition->op == TOKmatch) | |
| 862 { | |
| 863 /* Rewrite while (condition) body as: | |
| 864 * if (condition) | |
| 865 * do | |
| 866 * body | |
| 867 * while ((_match = _match.opNext), _match); | |
| 868 */ | |
| 869 | |
| 870 Expression *ew = new IdentifierExp(0, Id::_match); | |
| 871 ew = new DotIdExp(0, ew, Id::next); | |
| 872 ew = new AssignExp(0, new IdentifierExp(0, Id::_match), ew); | |
| 873 ////ew = new EqualExp(TOKnotequal, 0, ew, new NullExp(0)); | |
| 874 Expression *ev = new IdentifierExp(0, Id::_match); | |
| 875 //ev = new CastExp(0, ev, Type::tvoidptr); | |
| 876 ew = new CommaExp(0, ew, ev); | |
| 877 Statement *sw = new DoStatement(loc, body, ew); | |
| 878 Statement *si = new IfStatement(loc, condition, sw, NULL); | |
| 879 return si->semantic(sc); | |
| 880 } | |
| 881 #endif | |
| 882 | |
| 309 | 883 enclosinghandler = sc->tfOfTry; |
| 159 | 884 |
| 885 condition = condition->semantic(sc); | |
| 886 condition = resolveProperties(sc, condition); | |
| 887 condition = condition->optimize(WANTvalue); | |
| 888 condition = condition->checkToBoolean(); | |
| 889 | |
| 890 sc->noctor++; | |
| 891 | |
| 892 Scope *scd = sc->push(); | |
| 893 scd->sbreak = this; | |
| 894 scd->scontinue = this; | |
| 895 if (body) | |
| 896 body = body->semantic(scd); | |
| 897 scd->pop(); | |
| 898 | |
| 899 sc->noctor--; | |
| 900 | |
| 901 return this; | |
| 902 } | |
| 903 | |
| 904 int WhileStatement::hasBreak() | |
| 905 { | |
| 906 return TRUE; | |
| 907 } | |
| 908 | |
| 909 int WhileStatement::hasContinue() | |
| 910 { | |
| 911 return TRUE; | |
| 912 } | |
| 913 | |
| 914 int WhileStatement::usesEH() | |
| 915 { | |
| 916 return body ? body->usesEH() : 0; | |
| 917 } | |
| 918 | |
| 336 | 919 int WhileStatement::blockExit() |
| 920 { | |
| 921 //printf("WhileStatement::blockExit(%p)\n", this); | |
| 922 | |
| 923 int result = BEnone; | |
| 924 if (condition->canThrow()) | |
| 925 result |= BEthrow; | |
| 926 if (condition->isBool(TRUE)) | |
| 927 { | |
| 928 if (body) | |
| 929 { result |= body->blockExit(); | |
| 930 if (result & BEbreak) | |
| 931 result |= BEfallthru; | |
| 932 } | |
| 933 } | |
| 934 else if (condition->isBool(FALSE)) | |
| 935 { | |
| 936 result |= BEfallthru; | |
| 937 } | |
| 938 else | |
| 939 { | |
| 940 if (body) | |
| 941 result |= body->blockExit(); | |
| 942 result |= BEfallthru; | |
| 943 } | |
| 944 result &= ~(BEbreak | BEcontinue); | |
| 945 return result; | |
| 946 } | |
| 947 | |
| 159 | 948 int WhileStatement::fallOffEnd() |
| 949 { | |
| 950 if (body) | |
| 951 body->fallOffEnd(); | |
| 952 return TRUE; | |
| 953 } | |
| 954 | |
| 955 int WhileStatement::comeFrom() | |
| 956 { | |
| 957 if (body) | |
| 958 return body->comeFrom(); | |
| 959 return FALSE; | |
| 960 } | |
| 961 | |
| 962 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 963 { | |
| 964 buf->writestring("while ("); | |
| 965 condition->toCBuffer(buf, hgs); | |
| 966 buf->writebyte(')'); | |
| 967 buf->writenl(); | |
| 968 if (body) | |
| 969 body->toCBuffer(buf, hgs); | |
| 970 } | |
| 971 | |
| 972 /******************************** DoStatement ***************************/ | |
| 973 | |
| 974 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
| 975 : Statement(loc) | |
| 976 { | |
| 977 body = b; | |
| 978 condition = c; | |
| 309 | 979 enclosinghandler = NULL; |
| 159 | 980 } |
| 981 | |
| 982 Statement *DoStatement::syntaxCopy() | |
| 983 { | |
| 984 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
| 985 return s; | |
| 986 } | |
| 987 | |
| 988 | |
| 989 Statement *DoStatement::semantic(Scope *sc) | |
| 990 { | |
| 309 | 991 enclosinghandler = sc->tfOfTry; |
| 159 | 992 |
| 993 sc->noctor++; | |
| 994 if (body) | |
| 995 body = body->semanticScope(sc, this, this); | |
| 996 sc->noctor--; | |
| 997 condition = condition->semantic(sc); | |
| 998 condition = resolveProperties(sc, condition); | |
| 999 condition = condition->optimize(WANTvalue); | |
| 1000 | |
| 1001 condition = condition->checkToBoolean(); | |
| 1002 | |
| 1003 return this; | |
| 1004 } | |
| 1005 | |
| 1006 int DoStatement::hasBreak() | |
| 1007 { | |
| 1008 return TRUE; | |
| 1009 } | |
| 1010 | |
| 1011 int DoStatement::hasContinue() | |
| 1012 { | |
| 1013 return TRUE; | |
| 1014 } | |
| 1015 | |
| 1016 int DoStatement::usesEH() | |
| 1017 { | |
| 1018 return body ? body->usesEH() : 0; | |
| 1019 } | |
| 1020 | |
| 336 | 1021 int DoStatement::blockExit() |
| 1022 { int result; | |
| 1023 | |
| 1024 if (body) | |
| 1025 { result = body->blockExit(); | |
| 1026 if (result == BEbreak) | |
| 1027 return BEfallthru; | |
| 1028 if (result & BEcontinue) | |
| 1029 result |= BEfallthru; | |
| 1030 } | |
| 1031 else | |
| 1032 result = BEfallthru; | |
| 1033 if (result & BEfallthru) | |
| 1034 { if (condition->canThrow()) | |
| 1035 result |= BEthrow; | |
| 1036 if (!(result & BEbreak) && condition->isBool(TRUE)) | |
| 1037 result &= ~BEfallthru; | |
| 1038 } | |
| 1039 result &= ~(BEbreak | BEcontinue); | |
| 1040 return result; | |
| 1041 } | |
| 1042 | |
| 159 | 1043 int DoStatement::fallOffEnd() |
| 1044 { | |
| 1045 if (body) | |
| 1046 body->fallOffEnd(); | |
| 1047 return TRUE; | |
| 1048 } | |
| 1049 | |
| 1050 int DoStatement::comeFrom() | |
| 1051 { | |
| 1052 if (body) | |
| 1053 return body->comeFrom(); | |
| 1054 return FALSE; | |
| 1055 } | |
| 1056 | |
| 1057 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1058 { | |
| 1059 buf->writestring("do"); | |
| 1060 buf->writenl(); | |
| 1061 if (body) | |
| 1062 body->toCBuffer(buf, hgs); | |
| 1063 buf->writestring("while ("); | |
| 1064 condition->toCBuffer(buf, hgs); | |
| 1065 buf->writebyte(')'); | |
| 1066 } | |
| 1067 | |
| 1068 /******************************** ForStatement ***************************/ | |
| 1069 | |
| 1070 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
| 1071 : Statement(loc) | |
| 1072 { | |
| 1073 this->init = init; | |
| 1074 this->condition = condition; | |
| 1075 this->increment = increment; | |
| 1076 this->body = body; | |
| 309 | 1077 this->enclosinghandler = NULL; |
| 159 | 1078 } |
| 1079 | |
| 1080 Statement *ForStatement::syntaxCopy() | |
| 1081 { | |
| 1082 Statement *i = NULL; | |
| 1083 if (init) | |
| 1084 i = init->syntaxCopy(); | |
| 1085 Expression *c = NULL; | |
| 1086 if (condition) | |
| 1087 c = condition->syntaxCopy(); | |
| 1088 Expression *inc = NULL; | |
| 1089 if (increment) | |
| 1090 inc = increment->syntaxCopy(); | |
| 1091 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
| 1092 return s; | |
| 1093 } | |
| 1094 | |
| 1095 Statement *ForStatement::semantic(Scope *sc) | |
| 1096 { | |
| 309 | 1097 enclosinghandler = sc->tfOfTry; |
| 159 | 1098 |
| 1099 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1100 sym->parent = sc->scopesym; | |
| 1101 sc = sc->push(sym); | |
| 1102 if (init) | |
| 1103 init = init->semantic(sc); | |
| 1104 if (!condition) | |
| 1105 // Use a default value | |
| 1106 condition = new IntegerExp(loc, 1, Type::tboolean); | |
| 1107 sc->noctor++; | |
|
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1108 if (condition) |
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1109 { |
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1110 condition = condition->semantic(sc); |
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1111 condition = resolveProperties(sc, condition); |
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1112 condition = condition->optimize(WANTvalue); |
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1113 condition = condition->checkToBoolean(); |
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1114 } |
| 159 | 1115 if (increment) |
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1116 { increment = increment->semantic(sc); |
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1117 increment = resolveProperties(sc, increment); |
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1118 } |
| 159 | 1119 |
| 1120 sc->sbreak = this; | |
| 1121 sc->scontinue = this; | |
| 1122 body = body->semantic(sc); | |
| 1123 sc->noctor--; | |
| 1124 | |
| 1125 sc->pop(); | |
| 1126 return this; | |
| 1127 } | |
| 1128 | |
| 1129 void ForStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 1130 { | |
| 1131 //printf("ForStatement::scopeCode()\n"); | |
| 1132 //print(); | |
| 1133 if (init) | |
| 1134 init->scopeCode(sentry, sexception, sfinally); | |
| 1135 else | |
| 1136 Statement::scopeCode(sentry, sexception, sfinally); | |
| 1137 } | |
| 1138 | |
| 1139 int ForStatement::hasBreak() | |
| 1140 { | |
| 1141 //printf("ForStatement::hasBreak()\n"); | |
| 1142 return TRUE; | |
| 1143 } | |
| 1144 | |
| 1145 int ForStatement::hasContinue() | |
| 1146 { | |
| 1147 return TRUE; | |
| 1148 } | |
| 1149 | |
| 1150 int ForStatement::usesEH() | |
| 1151 { | |
| 1152 return (init && init->usesEH()) || body->usesEH(); | |
| 1153 } | |
| 1154 | |
| 336 | 1155 int ForStatement::blockExit() |
| 1156 { int result = BEfallthru; | |
| 1157 | |
| 1158 if (init) | |
| 1159 { result = init->blockExit(); | |
| 1160 if (!(result & BEfallthru)) | |
| 1161 return result; | |
| 1162 } | |
| 1163 if (condition) | |
| 1164 { if (condition->canThrow()) | |
| 1165 result |= BEthrow; | |
| 1166 } | |
| 1167 else | |
| 1168 result &= ~BEfallthru; // the body must do the exiting | |
| 1169 if (body) | |
| 1170 { int r = body->blockExit(); | |
| 1171 if (r & BEbreak) | |
| 1172 result |= BEfallthru; | |
| 1173 result |= r & ~(BEbreak | BEcontinue); | |
| 1174 } | |
| 1175 if (increment && increment->canThrow()) | |
| 1176 result |= BEthrow; | |
| 1177 return result; | |
| 1178 } | |
| 1179 | |
| 159 | 1180 int ForStatement::fallOffEnd() |
| 1181 { | |
| 1182 if (body) | |
| 1183 body->fallOffEnd(); | |
| 1184 return TRUE; | |
| 1185 } | |
| 1186 | |
| 1187 int ForStatement::comeFrom() | |
| 1188 { | |
| 1189 //printf("ForStatement::comeFrom()\n"); | |
| 1190 if (body) | |
| 1191 { int result = body->comeFrom(); | |
| 1192 //printf("result = %d\n", result); | |
| 1193 return result; | |
| 1194 } | |
| 1195 return FALSE; | |
| 1196 } | |
| 1197 | |
| 1198 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1199 { | |
| 1200 buf->writestring("for ("); | |
| 1201 if (init) | |
| 1202 { | |
| 1203 hgs->FLinit.init++; | |
| 1204 hgs->FLinit.decl = 0; | |
| 1205 init->toCBuffer(buf, hgs); | |
| 1206 if (hgs->FLinit.decl > 0) | |
| 1207 buf->writebyte(';'); | |
| 1208 hgs->FLinit.decl = 0; | |
| 1209 hgs->FLinit.init--; | |
| 1210 } | |
| 1211 else | |
| 1212 buf->writebyte(';'); | |
| 1213 if (condition) | |
| 1214 { buf->writebyte(' '); | |
| 1215 condition->toCBuffer(buf, hgs); | |
| 1216 } | |
| 1217 buf->writebyte(';'); | |
| 1218 if (increment) | |
| 1219 { buf->writebyte(' '); | |
| 1220 increment->toCBuffer(buf, hgs); | |
| 1221 } | |
| 1222 buf->writebyte(')'); | |
| 1223 buf->writenl(); | |
| 1224 buf->writebyte('{'); | |
| 1225 buf->writenl(); | |
| 1226 body->toCBuffer(buf, hgs); | |
| 1227 buf->writebyte('}'); | |
| 1228 buf->writenl(); | |
| 1229 } | |
| 1230 | |
| 1231 /******************************** ForeachStatement ***************************/ | |
| 1232 | |
| 1233 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Arguments *arguments, | |
| 1234 Expression *aggr, Statement *body) | |
| 1235 : Statement(loc) | |
| 1236 { | |
| 1237 this->op = op; | |
| 1238 this->arguments = arguments; | |
| 1239 this->aggr = aggr; | |
| 1240 this->body = body; | |
| 309 | 1241 this->enclosinghandler = NULL; |
| 159 | 1242 |
| 1243 this->key = NULL; | |
| 1244 this->value = NULL; | |
| 1245 | |
| 1246 this->func = NULL; | |
| 1247 } | |
| 1248 | |
| 1249 Statement *ForeachStatement::syntaxCopy() | |
| 1250 { | |
| 1251 Arguments *args = Argument::arraySyntaxCopy(arguments); | |
| 1252 Expression *exp = aggr->syntaxCopy(); | |
| 1253 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, | |
| 1254 body ? body->syntaxCopy() : NULL); | |
| 1255 return s; | |
| 1256 } | |
| 1257 | |
| 1258 Statement *ForeachStatement::semantic(Scope *sc) | |
| 1259 { | |
| 1260 //printf("ForeachStatement::semantic() %p\n", this); | |
| 1261 ScopeDsymbol *sym; | |
| 1262 Statement *s = this; | |
|
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diff
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1263 size_t dim = arguments->dim; |
| 159 | 1264 TypeAArray *taa = NULL; |
| 1265 | |
| 1266 Type *tn = NULL; | |
| 1267 Type *tnv = NULL; | |
| 1268 | |
| 309 | 1269 enclosinghandler = sc->tfOfTry; |
| 159 | 1270 |
| 1271 func = sc->func; | |
| 1272 if (func->fes) | |
| 1273 func = func->fes->func; | |
| 1274 | |
| 1275 aggr = aggr->semantic(sc); | |
| 1276 aggr = resolveProperties(sc, aggr); | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1277 aggr = aggr->optimize(WANTvalue); |
| 159 | 1278 if (!aggr->type) |
| 1279 { | |
| 1280 error("invalid foreach aggregate %s", aggr->toChars()); | |
| 1281 return this; | |
| 1282 } | |
| 1283 | |
| 1284 inferApplyArgTypes(op, arguments, aggr); | |
| 1285 | |
| 1286 /* Check for inference errors | |
| 1287 */ | |
| 1288 if (dim != arguments->dim) | |
| 1289 { | |
| 1290 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
| 1291 error("cannot uniquely infer foreach argument types"); | |
| 1292 return this; | |
| 1293 } | |
| 1294 | |
| 1295 Type *tab = aggr->type->toBasetype(); | |
| 1296 | |
| 1297 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
| 1298 { | |
| 1299 if (dim < 1 || dim > 2) | |
| 1300 { | |
| 1301 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
| 1302 return s; | |
| 1303 } | |
| 1304 | |
| 1305 TypeTuple *tuple = (TypeTuple *)tab; | |
| 1306 Statements *statements = new Statements(); | |
| 1307 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
| 1308 size_t n; | |
| 1309 TupleExp *te = NULL; | |
| 1310 if (aggr->op == TOKtuple) // expression tuple | |
| 1311 { te = (TupleExp *)aggr; | |
| 1312 n = te->exps->dim; | |
| 1313 } | |
| 1314 else if (aggr->op == TOKtype) // type tuple | |
| 1315 { | |
| 1316 n = Argument::dim(tuple->arguments); | |
| 1317 } | |
| 1318 else | |
| 1319 assert(0); | |
| 1320 for (size_t j = 0; j < n; j++) | |
| 1321 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
| 1322 Expression *e; | |
| 1323 Type *t; | |
| 1324 if (te) | |
| 1325 e = (Expression *)te->exps->data[k]; | |
| 1326 else | |
| 1327 t = Argument::getNth(tuple->arguments, k)->type; | |
| 1328 Argument *arg = (Argument *)arguments->data[0]; | |
| 1329 Statements *st = new Statements(); | |
| 1330 | |
| 1331 if (dim == 2) | |
| 1332 { // Declare key | |
| 1333 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1334 error("no storage class for key %s", arg->ident->toChars()); | |
| 1335 TY keyty = arg->type->ty; | |
|
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|
1336 if (global.params.is64bit) |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
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parents:
262
diff
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|
1337 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
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parents:
262
diff
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|
1338 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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|
1339 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1340 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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|
1341 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1342 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1343 else if (keyty != Tint32 && keyty != Tuns32) |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1344 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1345 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
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diff
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|
1346 } |
| 159 | 1347 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); |
| 1348 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1349 var->storage_class |= STCconst; | |
| 1350 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1351 st->push(new ExpStatement(loc, de)); | |
| 1352 arg = (Argument *)arguments->data[1]; // value | |
| 1353 } | |
| 1354 // Declare value | |
| 1355 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1356 error("no storage class for value %s", arg->ident->toChars()); | |
| 1357 Dsymbol *var; | |
| 1358 if (te) | |
| 1359 { | |
| 1360 if (e->type->toBasetype()->ty == Tfunction && | |
| 1361 e->op == TOKvar) | |
| 1362 { VarExp *ve = (VarExp *)e; | |
| 1363 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
| 1364 } | |
| 1365 else | |
| 1366 { | |
| 1367 arg->type = e->type; | |
| 1368 Initializer *ie = new ExpInitializer(0, e); | |
| 1369 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1370 if (e->isConst()) | |
| 1371 v->storage_class |= STCconst; | |
| 1372 var = v; | |
| 1373 } | |
| 1374 } | |
| 1375 else | |
| 1376 { | |
| 1377 var = new AliasDeclaration(loc, arg->ident, t); | |
| 1378 } | |
| 1379 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1380 st->push(new ExpStatement(loc, de)); | |
| 1381 | |
| 1382 st->push(body->syntaxCopy()); | |
| 1383 s = new CompoundStatement(loc, st); | |
| 1384 s = new ScopeStatement(loc, s); | |
| 1385 statements->push(s); | |
| 1386 } | |
| 1387 | |
| 1388 s = new UnrolledLoopStatement(loc, statements); | |
| 1389 s = s->semantic(sc); | |
| 1390 return s; | |
| 1391 } | |
| 1392 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1393 for (size_t i = 0; i < dim; i++) |
| 159 | 1394 { Argument *arg = (Argument *)arguments->data[i]; |
| 1395 if (!arg->type) | |
| 1396 { | |
| 1397 error("cannot infer type for %s", arg->ident->toChars()); | |
| 1398 return this; | |
| 1399 } | |
| 1400 } | |
| 1401 | |
| 1402 sym = new ScopeDsymbol(); | |
| 1403 sym->parent = sc->scopesym; | |
| 1404 sc = sc->push(sym); | |
| 1405 | |
| 1406 sc->noctor++; | |
| 1407 | |
| 1408 switch (tab->ty) | |
| 1409 { | |
| 1410 case Tarray: | |
| 1411 case Tsarray: | |
| 1412 if (dim < 1 || dim > 2) | |
| 1413 { | |
| 1414 error("only one or two arguments for array foreach"); | |
| 1415 break; | |
| 1416 } | |
| 1417 | |
| 1418 /* Look for special case of parsing char types out of char type | |
| 1419 * array. | |
| 1420 */ | |
| 1421 tn = tab->nextOf()->toBasetype(); | |
| 1422 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) | |
| 1423 { Argument *arg; | |
| 1424 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1425 int i = (dim == 1) ? 0 : 1; // index of value |
| 159 | 1426 arg = (Argument *)arguments->data[i]; |
| 1427 arg->type = arg->type->semantic(loc, sc); | |
| 1428 tnv = arg->type->toBasetype(); | |
| 1429 if (tnv->ty != tn->ty && | |
| 1430 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
| 1431 { | |
| 1432 if (arg->storageClass & STCref) | |
| 1433 error("foreach: value of UTF conversion cannot be ref"); | |
| 1434 if (dim == 2) | |
| 1435 { arg = (Argument *)arguments->data[0]; | |
| 1436 if (arg->storageClass & STCref) | |
| 1437 error("foreach: key cannot be ref"); | |
| 1438 } | |
| 1439 goto Lapply; | |
| 1440 } | |
| 1441 } | |
| 1442 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1443 for (size_t i = 0; i < dim; i++) |
| 159 | 1444 { // Declare args |
| 1445 Argument *arg = (Argument *)arguments->data[i]; | |
| 1446 VarDeclaration *var; | |
| 1447 | |
| 1448 var = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
| 1449 var->storage_class |= STCforeach; | |
| 1450 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
| 1451 #if 1 | |
| 1452 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1453 de->semantic(sc); | |
| 1454 #else | |
| 1455 var->semantic(sc); | |
| 1456 if (!sc->insert(var)) | |
| 1457 error("%s already defined", var->ident->toChars()); | |
| 1458 #endif | |
| 1459 if (dim == 2 && i == 0) | |
| 1460 key = var; | |
| 1461 else | |
| 1462 value = var; | |
| 1463 } | |
| 1464 | |
| 1465 sc->sbreak = this; | |
| 1466 sc->scontinue = this; | |
| 1467 body = body->semantic(sc); | |
| 1468 | |
| 1469 if (!value->type->equals(tab->next)) | |
| 1470 { | |
| 1471 if (aggr->op == TOKstring) | |
| 1472 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
| 1473 else | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1474 error("foreach: %s is not an array of %s", |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1475 tab->toChars(), value->type->toChars()); |
| 159 | 1476 } |
| 1477 | |
|
275
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parents:
262
diff
changeset
|
1478 if (key) |
|
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 if (global.params.is64bit) |
|
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 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
|
1483 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1484 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
|
1485 } |
|
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 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
|
1488 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1489 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
|
1490 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1491 } |
| 159 | 1492 |
| 1493 if (key && key->storage_class & (STCout | STCref)) | |
| 1494 error("foreach: key cannot be out or ref"); | |
| 1495 break; | |
| 1496 | |
| 1497 case Taarray: | |
| 1498 taa = (TypeAArray *)tab; | |
| 1499 if (dim < 1 || dim > 2) | |
| 1500 { | |
| 1501 error("only one or two arguments for associative array foreach"); | |
| 1502 break; | |
| 1503 } | |
| 1504 if (op == TOKforeach_reverse) | |
| 1505 { | |
| 1506 error("no reverse iteration on associative arrays"); | |
| 1507 } | |
| 1508 goto Lapply; | |
| 1509 | |
| 1510 case Tclass: | |
| 1511 case Tstruct: | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1512 #if DMDV2 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1513 { /* Look for range iteration, i.e. the properties |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1514 * .empty, .next, .retreat, .head and .rear |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1515 * foreach (e; range) { ... } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1516 * translates to: |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1517 * for (auto __r = range; !__r.empty; __r.next) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1518 * { auto e = __r.head; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1519 * ... |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1520 * } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1521 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1522 if (dim != 1) // only one argument allowed with ranges |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1523 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1524 AggregateDeclaration *ad = (tab->ty == Tclass) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1525 ? (AggregateDeclaration *)((TypeClass *)tab)->sym |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1526 : (AggregateDeclaration *)((TypeStruct *)tab)->sym; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1527 Identifier *idhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1528 Identifier *idnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1529 if (op == TOKforeach) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1530 { idhead = Id::Fhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1531 idnext = Id::Fnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1532 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1533 else |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1534 { idhead = Id::Frear; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1535 idnext = Id::Fretreat; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1536 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1537 Dsymbol *shead = search_function(ad, idhead); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1538 if (!shead) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1539 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1540 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1541 /* Generate a temporary __r and initialize it with the aggregate. |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1542 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1543 Identifier *id = Identifier::generateId("__r"); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1544 VarDeclaration *r = new VarDeclaration(loc, NULL, id, new ExpInitializer(loc, aggr)); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1545 r->semantic(sc); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1546 Statement *init = new DeclarationStatement(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1547 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1548 // !__r.empty |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1549 Expression *e = new VarExp(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1550 e = new DotIdExp(loc, e, Id::Fempty); |
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1551 Expression *condition = new NotExp(loc, e); |
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1552 |
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1553 // __r.next |
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1554 e = new VarExp(loc, r); |
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1555 Expression *increment = new DotIdExp(loc, e, idnext); |
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1556 |
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1557 /* Declaration statement for e: |
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1558 * auto e = __r.idhead; |
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1559 */ |
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1560 e = new VarExp(loc, r); |
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1561 Expression *einit = new DotIdExp(loc, e, idhead); |
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1562 einit = einit->semantic(sc); |
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1563 Argument *arg = (Argument *)arguments->data[0]; |
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1564 VarDeclaration *ve = new VarDeclaration(loc, arg->type, arg->ident, new ExpInitializer(loc, einit)); |
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1565 ve->storage_class |= STCforeach; |
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1566 ve->storage_class |= arg->storageClass & (STCin | STCout | STCref | STCconst | STCinvariant); |
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1567 |
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1568 DeclarationExp *de = new DeclarationExp(loc, ve); |
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1569 |
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1570 Statement *body = new CompoundStatement(loc, |
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1571 new DeclarationStatement(loc, de), this->body); |
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1572 |
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1573 s = new ForStatement(loc, init, condition, increment, body); |
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1574 s = s->semantic(sc); |
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1575 break; |
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1576 } |
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1577 #endif |
| 159 | 1578 case Tdelegate: |
| 1579 Lapply: | |
| 1580 { FuncDeclaration *fdapply; | |
| 1581 Arguments *args; | |
| 1582 Expression *ec; | |
| 1583 Expression *e; | |
| 1584 FuncLiteralDeclaration *fld; | |
| 1585 Argument *a; | |
| 1586 Type *t; | |
| 1587 Expression *flde; | |
| 1588 Identifier *id; | |
| 1589 Type *tret; | |
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1590 TypeDelegate* dgty; |
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1591 TypeDelegate* dgty2; |
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1592 TypeDelegate* fldeTy; |
| 159 | 1593 |
| 1594 tret = func->type->nextOf(); | |
| 1595 | |
| 1596 // Need a variable to hold value from any return statements in body. | |
| 1597 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1598 { VarDeclaration *v; | |
| 1599 | |
| 1600 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 1601 v->noauto = 1; | |
| 1602 v->semantic(sc); | |
| 1603 if (!sc->insert(v)) | |
| 1604 assert(0); | |
| 1605 v->parent = sc->func; | |
| 1606 sc->func->vresult = v; | |
| 1607 } | |
| 1608 | |
| 1609 /* Turn body into the function literal: | |
| 1610 * int delegate(ref T arg) { body } | |
| 1611 */ | |
| 1612 args = new Arguments(); | |
|
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1613 for (size_t i = 0; i < dim; i++) |
| 159 | 1614 { Argument *arg = (Argument *)arguments->data[i]; |
| 1615 | |
| 1616 arg->type = arg->type->semantic(loc, sc); | |
| 1617 if (arg->storageClass & STCref) | |
| 1618 id = arg->ident; | |
| 1619 else | |
| 1620 { // Make a copy of the ref argument so it isn't | |
| 1621 // a reference. | |
| 1622 VarDeclaration *v; | |
| 1623 Initializer *ie; | |
|
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1624 |
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1625 id = Lexer::uniqueId("__applyArg", i); |
| 159 | 1626 |
| 1627 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1628 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1629 s = new DeclarationStatement(0, v); | |
| 1630 body = new CompoundStatement(loc, s, body); | |
| 1631 } | |
| 1632 a = new Argument(STCref, arg->type, id, NULL); | |
| 1633 args->push(a); | |
| 1634 } | |
| 1635 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1636 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1637 fld->fbody = body; | |
| 1638 flde = new FuncExp(loc, fld); | |
| 1639 flde = flde->semantic(sc); | |
| 1640 | |
| 1641 // Resolve any forward referenced goto's | |
| 1642 for (int i = 0; i < gotos.dim; i++) | |
| 1643 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1644 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1645 | |
| 1646 if (!gs->label->statement) | |
| 1647 { // 'Promote' it to this scope, and replace with a return | |
| 1648 cases.push(gs); | |
| 1649 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1650 cs->statements->data[0] = (void *)s; | |
| 1651 } | |
| 1652 } | |
| 1653 | |
| 1654 if (tab->ty == Taarray) | |
| 1655 { | |
| 1656 // Check types | |
| 1657 Argument *arg = (Argument *)arguments->data[0]; | |
| 1658 if (dim == 2) | |
| 1659 { | |
| 1660 if (arg->storageClass & STCref) | |
| 1661 error("foreach: index cannot be ref"); | |
| 1662 if (!arg->type->equals(taa->index)) | |
| 1663 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
| 1664 arg = (Argument *)arguments->data[1]; | |
| 1665 } | |
| 1666 if (!arg->type->equals(taa->nextOf())) | |
| 1667 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1668 | |
| 1669 /* Call: | |
| 1670 * _aaApply(aggr, keysize, flde) | |
| 1671 */ | |
|
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1672 //LDC: Build arguments. |
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1673 static FuncDeclaration *aaApply2_fd = NULL; |
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1674 static TypeDelegate* aaApply2_dg; |
|
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1675 if(!aaApply2_fd) { |
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1676 Arguments* args = new Arguments; |
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1677 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
|
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1678 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
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1679 Arguments* dgargs = new Arguments; |
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1680 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1681 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1682 aaApply2_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1683 args->push(new Argument(STCin, aaApply2_dg, NULL, NULL)); |
|
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1684 aaApply2_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply2"); |
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1685 } |
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1686 static FuncDeclaration *aaApply_fd = NULL; |
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1687 static TypeDelegate* aaApply_dg; |
|
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1688 if(!aaApply_fd) { |
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1689 Arguments* args = new Arguments; |
|
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1690 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
|
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1691 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
|
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1692 Arguments* dgargs = new Arguments; |
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1693 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1694 aaApply_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1695 args->push(new Argument(STCin, aaApply_dg, NULL, NULL)); |
|
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1696 aaApply_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply"); |
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1697 } |
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1698 if (dim == 2) { |
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1699 fdapply = aaApply2_fd; |
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1700 fldeTy = aaApply2_dg; |
|
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1701 } else { |
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1702 fdapply = aaApply_fd; |
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1703 fldeTy = aaApply_dg; |
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1704 } |
| 159 | 1705 ec = new VarExp(0, fdapply); |
| 1706 Expressions *exps = new Expressions(); | |
| 1707 exps->push(aggr); | |
| 1708 size_t keysize = taa->key->size(); | |
|
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1709 keysize = (keysize + (PTRSIZE-1)) & ~(PTRSIZE-1); |
| 159 | 1710 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); |
|
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1711 |
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|
1712 // LDC paint delegate argument to the type runtime expects |
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1713 if (!fldeTy->equals(flde->type)) |
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1714 { |
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1715 flde = new CastExp(loc, flde, flde->type); |
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1716 flde->type = fldeTy; |
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1717 } |
| 159 | 1718 exps->push(flde); |
|
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1719 |
| 159 | 1720 e = new CallExp(loc, ec, exps); |
| 1721 e->type = Type::tindex; // don't run semantic() on e | |
| 1722 } | |
| 1723 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1724 { | |
| 1725 /* Call: | |
| 1726 * _aApply(aggr, flde) | |
| 1727 */ | |
| 1728 static char fntab[9][3] = | |
| 1729 { "cc","cw","cd", | |
| 1730 "wc","cc","wd", | |
| 1731 "dc","dw","dd" | |
| 1732 }; | |
| 1733 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1734 int flag; | |
| 1735 | |
| 1736 switch (tn->ty) | |
| 1737 { | |
| 1738 case Tchar: flag = 0; break; | |
| 1739 case Twchar: flag = 3; break; | |
| 1740 case Tdchar: flag = 6; break; | |
| 1741 default: assert(0); | |
| 1742 } | |
| 1743 switch (tnv->ty) | |
| 1744 { | |
| 1745 case Tchar: flag += 0; break; | |
| 1746 case Twchar: flag += 1; break; | |
| 1747 case Tdchar: flag += 2; break; | |
| 1748 default: assert(0); | |
| 1749 } | |
| 1750 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
| 1751 int j = sprintf(fdname, "_aApply%s%.*s%d", r, 2, fntab[flag], dim); | |
| 1752 assert(j < sizeof(fdname)); | |
|
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|
1754 Arguments* args = new Arguments; |
|
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|
1755 args->push(new Argument(STCin, tn->arrayOf(), NULL, NULL)); |
|
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1756 if (dim == 2) { |
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1757 Arguments* dgargs = new Arguments; |
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1758 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1759 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1760 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1761 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1762 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1763 } else { |
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1764 Arguments* dgargs = new Arguments; |
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1765 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1766 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1767 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1768 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1769 } |
| 159 | 1770 |
| 1771 ec = new VarExp(0, fdapply); | |
| 1772 Expressions *exps = new Expressions(); | |
| 1773 if (tab->ty == Tsarray) | |
| 1774 aggr = aggr->castTo(sc, tn->arrayOf()); | |
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1775 exps->push(aggr); |
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1776 |
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1777 // LDC paint delegate argument to the type runtime expects |
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1778 if (!dgty->equals(flde->type)) |
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1779 { |
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1780 flde = new CastExp(loc, flde, flde->type); |
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1781 flde->type = dgty; |
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1782 } |
| 159 | 1783 exps->push(flde); |
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1784 |
| 159 | 1785 e = new CallExp(loc, ec, exps); |
| 1786 e->type = Type::tindex; // don't run semantic() on e | |
| 1787 } | |
| 1788 else if (tab->ty == Tdelegate) | |
| 1789 { | |
| 1790 /* Call: | |
| 1791 * aggr(flde) | |
| 1792 */ | |
| 1793 Expressions *exps = new Expressions(); | |
| 1794 exps->push(flde); | |
| 1795 e = new CallExp(loc, aggr, exps); | |
| 1796 e = e->semantic(sc); | |
| 1797 if (e->type != Type::tint32) | |
| 1798 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1799 } | |
| 1800 else | |
| 1801 { | |
| 1802 /* Call: | |
| 1803 * aggr.apply(flde) | |
| 1804 */ | |
| 1805 ec = new DotIdExp(loc, aggr, | |
| 1806 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1807 : Id::apply); | |
| 1808 Expressions *exps = new Expressions(); | |
| 1809 exps->push(flde); | |
| 1810 e = new CallExp(loc, ec, exps); | |
| 1811 e = e->semantic(sc); | |
| 1812 if (e->type != Type::tint32) | |
| 1813 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1814 } | |
| 1815 | |
| 1816 if (!cases.dim) | |
| 1817 // Easy case, a clean exit from the loop | |
| 1818 s = new ExpStatement(loc, e); | |
| 1819 else | |
| 1820 { // Construct a switch statement around the return value | |
| 1821 // of the apply function. | |
| 1822 Statements *a = new Statements(); | |
| 1823 | |
| 1824 // default: break; takes care of cases 0 and 1 | |
| 1825 s = new BreakStatement(0, NULL); | |
| 1826 s = new DefaultStatement(0, s); | |
| 1827 a->push(s); | |
| 1828 | |
| 1829 // cases 2... | |
| 1830 for (int i = 0; i < cases.dim; i++) | |
| 1831 { | |
| 1832 s = (Statement *)cases.data[i]; | |
| 1833 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1834 a->push(s); | |
| 1835 } | |
| 1836 | |
| 1837 s = new CompoundStatement(loc, a); | |
| 1838 s = new SwitchStatement(loc, e, s); | |
| 1839 s = s->semantic(sc); | |
| 1840 } | |
| 1841 break; | |
| 1842 } | |
| 1843 | |
| 1844 default: | |
| 1845 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1846 break; | |
| 1847 } | |
| 1848 sc->noctor--; | |
| 1849 sc->pop(); | |
| 1850 return s; | |
| 1851 } | |
| 1852 | |
| 1853 int ForeachStatement::hasBreak() | |
| 1854 { | |
| 1855 return TRUE; | |
| 1856 } | |
| 1857 | |
| 1858 int ForeachStatement::hasContinue() | |
| 1859 { | |
| 1860 return TRUE; | |
| 1861 } | |
| 1862 | |
| 1863 int ForeachStatement::usesEH() | |
| 1864 { | |
| 1865 return body->usesEH(); | |
| 1866 } | |
| 1867 | |
| 336 | 1868 int ForeachStatement::blockExit() |
| 1869 { int result = BEfallthru; | |
| 1870 | |
| 1871 if (aggr->canThrow()) | |
| 1872 result |= BEthrow; | |
| 1873 | |
| 1874 if (body) | |
| 1875 { | |
| 1876 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 1877 } | |
| 1878 return result; | |
| 1879 } | |
| 1880 | |
| 159 | 1881 int ForeachStatement::fallOffEnd() |
| 1882 { | |
| 1883 if (body) | |
| 1884 body->fallOffEnd(); | |
| 1885 return TRUE; | |
| 1886 } | |
| 1887 | |
| 1888 int ForeachStatement::comeFrom() | |
| 1889 { | |
| 1890 if (body) | |
| 1891 return body->comeFrom(); | |
| 1892 return FALSE; | |
| 1893 } | |
| 1894 | |
| 1895 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1896 { | |
| 1897 buf->writestring(Token::toChars(op)); | |
| 1898 buf->writestring(" ("); | |
| 1899 for (int i = 0; i < arguments->dim; i++) | |
| 1900 { | |
| 1901 Argument *a = (Argument *)arguments->data[i]; | |
| 1902 if (i) | |
| 1903 buf->writestring(", "); | |
| 1904 if (a->storageClass & STCref) | |
| 1905 buf->writestring((global.params.Dversion == 1) | |
| 1906 ? (char*)"inout " : (char*)"ref "); | |
| 1907 if (a->type) | |
| 1908 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1909 else | |
| 1910 buf->writestring(a->ident->toChars()); | |
| 1911 } | |
| 1912 buf->writestring("; "); | |
| 1913 aggr->toCBuffer(buf, hgs); | |
| 1914 buf->writebyte(')'); | |
| 1915 buf->writenl(); | |
| 1916 buf->writebyte('{'); | |
| 1917 buf->writenl(); | |
| 1918 if (body) | |
| 1919 body->toCBuffer(buf, hgs); | |
| 1920 buf->writebyte('}'); | |
| 1921 buf->writenl(); | |
| 1922 } | |
| 1923 | |
| 1924 /******************************** IfStatement ***************************/ | |
| 1925 | |
| 1926 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody) | |
| 1927 : Statement(loc) | |
| 1928 { | |
| 1929 this->arg = arg; | |
| 1930 this->condition = condition; | |
| 1931 this->ifbody = ifbody; | |
| 1932 this->elsebody = elsebody; | |
| 1933 this->match = NULL; | |
| 1934 } | |
| 1935 | |
| 1936 Statement *IfStatement::syntaxCopy() | |
| 1937 { | |
| 1938 Statement *i = NULL; | |
| 1939 if (ifbody) | |
| 1940 i = ifbody->syntaxCopy(); | |
| 1941 | |
| 1942 Statement *e = NULL; | |
| 1943 if (elsebody) | |
| 1944 e = elsebody->syntaxCopy(); | |
| 1945 | |
| 1946 Argument *a = arg ? arg->syntaxCopy() : NULL; | |
| 1947 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); | |
| 1948 return s; | |
| 1949 } | |
| 1950 | |
| 1951 Statement *IfStatement::semantic(Scope *sc) | |
| 1952 { | |
| 1953 condition = condition->semantic(sc); | |
| 1954 condition = resolveProperties(sc, condition); | |
| 1955 condition = condition->checkToBoolean(); | |
| 1956 | |
| 1957 // If we can short-circuit evaluate the if statement, don't do the | |
| 1958 // semantic analysis of the skipped code. | |
| 1959 // This feature allows a limited form of conditional compilation. | |
| 1960 condition = condition->optimize(WANTflags); | |
| 1961 | |
| 1962 // Evaluate at runtime | |
| 1963 unsigned cs0 = sc->callSuper; | |
| 1964 unsigned cs1; | |
| 1965 | |
| 1966 Scope *scd; | |
| 1967 if (arg) | |
| 1968 { /* Declare arg, which we will set to be the | |
| 1969 * result of condition. | |
| 1970 */ | |
| 1971 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1972 sym->parent = sc->scopesym; | |
| 1973 scd = sc->push(sym); | |
| 1974 | |
| 1975 Type *t = arg->type ? arg->type : condition->type; | |
| 1976 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
| 1977 match->noauto = 1; | |
| 1978 match->semantic(scd); | |
| 1979 if (!scd->insert(match)) | |
| 1980 assert(0); | |
| 1981 match->parent = sc->func; | |
| 1982 | |
| 1983 /* Generate: | |
| 1984 * (arg = condition) | |
| 1985 */ | |
| 1986 VarExp *v = new VarExp(0, match); | |
| 1987 condition = new AssignExp(loc, v, condition); | |
| 1988 condition = condition->semantic(scd); | |
| 1989 } | |
| 1990 else | |
| 1991 scd = sc->push(); | |
| 1992 ifbody = ifbody->semantic(scd); | |
| 1993 scd->pop(); | |
| 1994 | |
| 1995 cs1 = sc->callSuper; | |
| 1996 sc->callSuper = cs0; | |
| 1997 if (elsebody) | |
| 1998 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 1999 sc->mergeCallSuper(loc, cs1); | |
| 2000 | |
| 2001 return this; | |
| 2002 } | |
| 2003 | |
| 2004 int IfStatement::usesEH() | |
| 2005 { | |
| 2006 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2007 } | |
| 2008 | |
| 336 | 2009 int IfStatement::blockExit() |
| 2010 { | |
| 2011 //printf("IfStatement::blockExit(%p)\n", this); | |
| 2012 | |
| 2013 int result = BEnone; | |
| 2014 if (condition->canThrow()) | |
| 2015 result |= BEthrow; | |
| 2016 if (condition->isBool(TRUE)) | |
| 2017 { | |
| 2018 if (ifbody) | |
| 2019 result |= ifbody->blockExit(); | |
| 2020 else | |
| 2021 result |= BEfallthru; | |
| 2022 } | |
| 2023 else if (condition->isBool(FALSE)) | |
| 2024 { | |
| 2025 if (elsebody) | |
| 2026 result |= elsebody->blockExit(); | |
| 2027 else | |
| 2028 result |= BEfallthru; | |
| 2029 } | |
| 2030 else | |
| 2031 { | |
| 2032 if (ifbody) | |
| 2033 result |= ifbody->blockExit(); | |
| 2034 else | |
| 2035 result |= BEfallthru; | |
| 2036 if (elsebody) | |
| 2037 result |= elsebody->blockExit(); | |
| 2038 else | |
| 2039 result |= BEfallthru; | |
| 2040 } | |
| 2041 //printf("IfStatement::blockExit(%p) = x%x\n", this, result); | |
| 2042 return result; | |
| 2043 } | |
| 2044 | |
| 159 | 2045 int IfStatement::fallOffEnd() |
| 2046 { | |
| 2047 if (!ifbody || ifbody->fallOffEnd() || | |
| 2048 !elsebody || elsebody->fallOffEnd()) | |
| 2049 return TRUE; | |
| 2050 return FALSE; | |
| 2051 } | |
| 2052 | |
| 2053 | |
| 2054 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2055 { | |
| 2056 buf->writestring("if ("); | |
| 2057 if (arg) | |
| 2058 { | |
| 2059 if (arg->type) | |
| 2060 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 2061 else | |
|
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2062 { buf->writestring("auto "); |
| 159 | 2063 buf->writestring(arg->ident->toChars()); |
|
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2064 } |
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2065 buf->writestring(" = "); |
| 159 | 2066 } |
| 2067 condition->toCBuffer(buf, hgs); | |
| 2068 buf->writebyte(')'); | |
| 2069 buf->writenl(); | |
| 2070 ifbody->toCBuffer(buf, hgs); | |
| 2071 if (elsebody) | |
| 2072 { buf->writestring("else"); | |
| 2073 buf->writenl(); | |
| 2074 elsebody->toCBuffer(buf, hgs); | |
| 2075 } | |
| 2076 } | |
| 2077 | |
| 2078 /******************************** ConditionalStatement ***************************/ | |
| 2079 | |
| 2080 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 2081 : Statement(loc) | |
| 2082 { | |
| 2083 this->condition = condition; | |
| 2084 this->ifbody = ifbody; | |
| 2085 this->elsebody = elsebody; | |
| 2086 } | |
| 2087 | |
| 2088 Statement *ConditionalStatement::syntaxCopy() | |
| 2089 { | |
| 2090 Statement *e = NULL; | |
| 2091 if (elsebody) | |
| 2092 e = elsebody->syntaxCopy(); | |
| 2093 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 2094 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 2095 return s; | |
| 2096 } | |
| 2097 | |
| 2098 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 2099 { | |
| 2100 //printf("ConditionalStatement::semantic()\n"); | |
| 2101 | |
| 2102 // If we can short-circuit evaluate the if statement, don't do the | |
| 2103 // semantic analysis of the skipped code. | |
| 2104 // This feature allows a limited form of conditional compilation. | |
| 2105 if (condition->include(sc, NULL)) | |
| 2106 { | |
| 2107 ifbody = ifbody->semantic(sc); | |
| 2108 return ifbody; | |
| 2109 } | |
| 2110 else | |
| 2111 { | |
| 2112 if (elsebody) | |
| 2113 elsebody = elsebody->semantic(sc); | |
| 2114 return elsebody; | |
| 2115 } | |
| 2116 } | |
| 2117 | |
| 2118 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 2119 { | |
| 2120 Statement *s; | |
| 2121 | |
| 2122 if (condition->include(sc, NULL)) | |
| 2123 s = ifbody; | |
| 2124 else | |
| 2125 s = elsebody; | |
| 2126 | |
| 2127 Statements *a = new Statements(); | |
| 2128 a->push(s); | |
| 2129 return a; | |
| 2130 } | |
| 2131 | |
| 2132 int ConditionalStatement::usesEH() | |
| 2133 { | |
| 2134 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2135 } | |
| 2136 | |
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2137 int ConditionalStatement::blockExit() |
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2138 { |
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2139 int result = ifbody->blockExit(); |
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2140 if (elsebody) |
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2141 result |= elsebody->blockExit(); |
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2142 return result; |
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2143 } |
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2144 |
| 159 | 2145 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2146 { | |
| 2147 condition->toCBuffer(buf, hgs); | |
| 2148 buf->writenl(); | |
| 336 | 2149 buf->writeByte('{'); |
| 2150 buf->writenl(); | |
| 159 | 2151 if (ifbody) |
| 2152 ifbody->toCBuffer(buf, hgs); | |
| 336 | 2153 buf->writeByte('}'); |
| 2154 buf->writenl(); | |
| 159 | 2155 if (elsebody) |
| 2156 { | |
| 2157 buf->writestring("else"); | |
| 2158 buf->writenl(); | |
| 336 | 2159 buf->writeByte('{'); |
| 2160 buf->writenl(); | |
| 159 | 2161 elsebody->toCBuffer(buf, hgs); |
| 336 | 2162 buf->writeByte('}'); |
| 2163 buf->writenl(); | |
| 159 | 2164 } |
| 2165 buf->writenl(); | |
| 2166 } | |
| 2167 | |
| 2168 | |
| 2169 /******************************** PragmaStatement ***************************/ | |
| 2170 | |
| 2171 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 2172 : Statement(loc) | |
| 2173 { | |
| 2174 this->ident = ident; | |
| 2175 this->args = args; | |
| 2176 this->body = body; | |
| 2177 } | |
| 2178 | |
| 2179 Statement *PragmaStatement::syntaxCopy() | |
| 2180 { | |
| 2181 Statement *b = NULL; | |
| 2182 if (body) | |
| 2183 b = body->syntaxCopy(); | |
| 2184 PragmaStatement *s = new PragmaStatement(loc, | |
| 2185 ident, Expression::arraySyntaxCopy(args), b); | |
| 2186 return s; | |
| 2187 } | |
| 2188 | |
| 2189 Statement *PragmaStatement::semantic(Scope *sc) | |
| 2190 { // Should be merged with PragmaDeclaration | |
| 2191 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 2192 //printf("body = %p\n", body); | |
| 2193 if (ident == Id::msg) | |
| 2194 { | |
| 2195 if (args) | |
| 2196 { | |
| 2197 for (size_t i = 0; i < args->dim; i++) | |
| 2198 { | |
| 2199 Expression *e = (Expression *)args->data[i]; | |
| 2200 | |
| 2201 e = e->semantic(sc); | |
| 2202 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2203 if (e->op == TOKstring) | |
| 2204 { | |
| 2205 StringExp *se = (StringExp *)e; | |
|
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2206 fprintf(stdmsg, "%.*s", (int)se->len, (char*)se->string); |
| 159 | 2207 } |
| 2208 else | |
| 2209 error("string expected for message, not '%s'", e->toChars()); | |
| 2210 } | |
| 2211 fprintf(stdmsg, "\n"); | |
| 2212 } | |
| 2213 } | |
| 2214 else if (ident == Id::lib) | |
| 2215 { | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2216 #if 1 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2217 /* Should this be allowed? |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2218 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2219 error("pragma(lib) not allowed as statement"); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2220 #else |
| 159 | 2221 if (!args || args->dim != 1) |
| 2222 error("string expected for library name"); | |
| 2223 else | |
| 2224 { | |
| 2225 Expression *e = (Expression *)args->data[0]; | |
| 2226 | |
| 2227 e = e->semantic(sc); | |
| 2228 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2229 args->data[0] = (void *)e; | |
| 2230 if (e->op != TOKstring) | |
| 2231 error("string expected for library name, not '%s'", e->toChars()); | |
| 2232 else if (global.params.verbose) | |
| 2233 { | |
| 2234 StringExp *se = (StringExp *)e; | |
| 2235 char *name = (char *)mem.malloc(se->len + 1); | |
| 2236 memcpy(name, se->string, se->len); | |
| 2237 name[se->len] = 0; | |
| 2238 printf("library %s\n", name); | |
| 2239 mem.free(name); | |
| 2240 } | |
| 2241 } | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2242 #endif |
| 159 | 2243 } |
| 2244 else | |
| 2245 error("unrecognized pragma(%s)", ident->toChars()); | |
| 2246 | |
| 2247 if (body) | |
| 2248 { | |
| 2249 body = body->semantic(sc); | |
| 2250 } | |
| 2251 return body; | |
| 2252 } | |
| 2253 | |
| 2254 int PragmaStatement::usesEH() | |
| 2255 { | |
| 2256 return body && body->usesEH(); | |
| 2257 } | |
| 2258 | |
| 336 | 2259 int PragmaStatement::blockExit() |
| 2260 { | |
| 2261 int result = BEfallthru; | |
| 2262 #if 0 // currently, no code is generated for Pragma's, so it's just fallthru | |
| 2263 if (arrayExpressionCanThrow(args)) | |
| 2264 result |= BEthrow; | |
| 2265 if (body) | |
| 2266 result |= body->blockExit(); | |
| 2267 #endif | |
| 2268 return result; | |
| 2269 } | |
| 2270 | |
| 159 | 2271 int PragmaStatement::fallOffEnd() |
| 2272 { | |
| 2273 if (body) | |
| 2274 return body->fallOffEnd(); | |
| 2275 return TRUE; | |
| 2276 } | |
| 2277 | |
| 2278 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2279 { | |
| 2280 buf->writestring("pragma ("); | |
| 2281 buf->writestring(ident->toChars()); | |
| 2282 if (args && args->dim) | |
| 2283 { | |
| 2284 buf->writestring(", "); | |
| 2285 argsToCBuffer(buf, args, hgs); | |
| 2286 } | |
| 2287 buf->writeByte(')'); | |
| 2288 if (body) | |
| 2289 { | |
| 2290 buf->writenl(); | |
| 2291 buf->writeByte('{'); | |
| 2292 buf->writenl(); | |
| 2293 | |
| 2294 body->toCBuffer(buf, hgs); | |
| 2295 | |
| 2296 buf->writeByte('}'); | |
| 2297 buf->writenl(); | |
| 2298 } | |
| 2299 else | |
| 2300 { | |
| 2301 buf->writeByte(';'); | |
| 2302 buf->writenl(); | |
| 2303 } | |
| 2304 } | |
| 2305 | |
| 2306 | |
| 2307 /******************************** StaticAssertStatement ***************************/ | |
| 2308 | |
| 2309 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 2310 : Statement(sa->loc) | |
| 2311 { | |
| 2312 this->sa = sa; | |
| 2313 } | |
| 2314 | |
| 2315 Statement *StaticAssertStatement::syntaxCopy() | |
| 2316 { | |
| 2317 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 2318 return s; | |
| 2319 } | |
| 2320 | |
| 2321 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 2322 { | |
| 2323 sa->semantic2(sc); | |
| 2324 return NULL; | |
| 2325 } | |
| 2326 | |
| 2327 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2328 { | |
| 2329 sa->toCBuffer(buf, hgs); | |
| 2330 } | |
| 2331 | |
| 2332 | |
| 2333 /******************************** SwitchStatement ***************************/ | |
| 2334 | |
| 2335 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 2336 : Statement(loc) | |
| 2337 { | |
| 2338 condition = c; | |
| 2339 body = b; | |
| 2340 sdefault = NULL; | |
| 2341 cases = NULL; | |
| 2342 hasNoDefault = 0; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
2343 // LDC |
| 309 | 2344 enclosinghandler = NULL; |
| 159 | 2345 } |
| 2346 | |
| 2347 Statement *SwitchStatement::syntaxCopy() | |
| 2348 { | |
| 2349 SwitchStatement *s = new SwitchStatement(loc, | |
| 2350 condition->syntaxCopy(), body->syntaxCopy()); | |
| 2351 return s; | |
| 2352 } | |
| 2353 | |
| 2354 Statement *SwitchStatement::semantic(Scope *sc) | |
| 2355 { | |
| 2356 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 2357 assert(!cases); // ensure semantic() is only run once | |
| 2358 | |
| 309 | 2359 enclosinghandler = sc->tfOfTry; |
| 159 | 2360 |
| 2361 condition = condition->semantic(sc); | |
| 2362 condition = resolveProperties(sc, condition); | |
| 2363 if (condition->type->isString()) | |
| 2364 { | |
| 2365 // If it's not an array, cast it to one | |
| 2366 if (condition->type->ty != Tarray) | |
| 2367 { | |
| 2368 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2369 } | |
| 2370 } | |
| 2371 else | |
| 2372 { condition = condition->integralPromotions(sc); | |
| 2373 condition->checkIntegral(); | |
| 2374 } | |
| 2375 condition = condition->optimize(WANTvalue); | |
| 2376 | |
| 2377 sc = sc->push(); | |
| 2378 sc->sbreak = this; | |
| 2379 sc->sw = this; | |
| 2380 | |
| 2381 cases = new Array(); | |
| 2382 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2383 body = body->semantic(sc); | |
| 2384 sc->noctor--; | |
| 2385 | |
| 2386 // Resolve any goto case's with exp | |
| 2387 for (int i = 0; i < gotoCases.dim; i++) | |
| 2388 { | |
| 2389 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2390 | |
| 2391 if (!gcs->exp) | |
| 2392 { | |
| 2393 gcs->error("no case statement following goto case;"); | |
| 2394 break; | |
| 2395 } | |
| 2396 | |
| 2397 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2398 { | |
| 2399 if (!scx->sw) | |
| 2400 continue; | |
| 2401 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2402 { | |
| 2403 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2404 | |
| 2405 if (cs->exp->equals(gcs->exp)) | |
| 2406 { | |
| 2407 gcs->cs = cs; | |
| 2408 goto Lfoundcase; | |
| 2409 } | |
| 2410 } | |
| 2411 } | |
| 2412 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2413 | |
| 2414 Lfoundcase: | |
| 2415 ; | |
| 2416 } | |
| 2417 | |
| 2418 if (!sc->sw->sdefault) | |
| 2419 { hasNoDefault = 1; | |
| 2420 | |
| 2421 if (global.params.warnings) | |
|
215
a58d8f4b84df
[svn r231] Changed: warnings are no longer treated as an error.
lindquist
parents:
159
diff
changeset
|
2422 { warning("%s: switch statement has no default", loc.toChars()); |
| 159 | 2423 } |
| 2424 | |
| 2425 // Generate runtime error if the default is hit | |
| 2426 Statements *a = new Statements(); | |
| 2427 CompoundStatement *cs; | |
| 2428 Statement *s; | |
| 2429 | |
| 2430 if (global.params.useSwitchError) | |
| 2431 s = new SwitchErrorStatement(loc); | |
| 2432 else | |
| 2433 { Expression *e = new HaltExp(loc); | |
| 2434 s = new ExpStatement(loc, e); | |
| 2435 } | |
| 2436 | |
| 2437 a->reserve(4); | |
| 2438 a->push(body); | |
| 2439 a->push(new BreakStatement(loc, NULL)); | |
| 2440 sc->sw->sdefault = new DefaultStatement(loc, s); | |
| 2441 a->push(sc->sw->sdefault); | |
| 2442 cs = new CompoundStatement(loc, a); | |
| 2443 body = cs; | |
| 2444 } | |
| 2445 | |
| 2446 sc->pop(); | |
| 2447 return this; | |
| 2448 } | |
| 2449 | |
| 2450 int SwitchStatement::hasBreak() | |
| 2451 { | |
| 2452 return TRUE; | |
| 2453 } | |
| 2454 | |
| 2455 int SwitchStatement::usesEH() | |
| 2456 { | |
| 2457 return body ? body->usesEH() : 0; | |
| 2458 } | |
| 2459 | |
| 336 | 2460 int SwitchStatement::blockExit() |
| 2461 { int result = BEnone; | |
| 2462 if (condition->canThrow()) | |
| 2463 result |= BEthrow; | |
| 2464 | |
| 2465 if (body) | |
| 2466 { result |= body->blockExit(); | |
| 2467 if (result & BEbreak) | |
| 2468 { result |= BEfallthru; | |
| 2469 result &= ~BEbreak; | |
| 2470 } | |
| 2471 } | |
| 2472 else | |
| 2473 result |= BEfallthru; | |
| 2474 | |
| 2475 return result; | |
| 2476 } | |
| 2477 | |
| 159 | 2478 int SwitchStatement::fallOffEnd() |
| 2479 { | |
| 2480 if (body) | |
| 2481 body->fallOffEnd(); | |
| 2482 return TRUE; // need to do this better | |
| 2483 } | |
| 2484 | |
| 2485 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2486 { | |
| 2487 buf->writestring("switch ("); | |
| 2488 condition->toCBuffer(buf, hgs); | |
| 2489 buf->writebyte(')'); | |
| 2490 buf->writenl(); | |
| 2491 if (body) | |
| 2492 { | |
| 2493 if (!body->isScopeStatement()) | |
| 2494 { buf->writebyte('{'); | |
| 2495 buf->writenl(); | |
| 2496 body->toCBuffer(buf, hgs); | |
| 2497 buf->writebyte('}'); | |
| 2498 buf->writenl(); | |
| 2499 } | |
| 2500 else | |
| 2501 { | |
| 2502 body->toCBuffer(buf, hgs); | |
| 2503 } | |
| 2504 } | |
| 2505 } | |
| 2506 | |
| 2507 /******************************** CaseStatement ***************************/ | |
| 2508 | |
| 2509 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2510 : Statement(loc) | |
| 2511 { | |
| 2512 this->exp = exp; | |
| 2513 this->statement = s; | |
| 2514 cblock = NULL; | |
| 2515 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
|
2516 llvmIdx = NULL; |
| 159 | 2517 } |
| 2518 | |
| 2519 Statement *CaseStatement::syntaxCopy() | |
| 2520 { | |
| 2521 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2522 return s; | |
| 2523 } | |
| 2524 | |
| 2525 Statement *CaseStatement::semantic(Scope *sc) | |
| 2526 { SwitchStatement *sw = sc->sw; | |
| 2527 | |
| 2528 //printf("CaseStatement::semantic() %s\n", toChars()); | |
| 2529 exp = exp->semantic(sc); | |
| 2530 if (sw) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2531 { |
| 159 | 2532 exp = exp->implicitCastTo(sc, sw->condition->type); |
| 2533 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2534 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2535 { | |
| 2536 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2537 exp = new IntegerExp(0); | |
| 2538 } | |
| 2539 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2540 for (int i = 0; i < sw->cases->dim; i++) |
| 159 | 2541 { |
| 2542 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2543 | |
| 2544 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2545 if (cs->exp->equals(exp)) | |
| 2546 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2547 break; | |
| 2548 } | |
| 2549 } | |
| 2550 | |
| 2551 sw->cases->push(this); | |
| 2552 | |
| 2553 // Resolve any goto case's with no exp to this case statement | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2554 for (size_t i = 0; i < sw->gotoCases.dim; i++) |
| 159 | 2555 { |
| 2556 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2557 | |
| 2558 if (!gcs->exp) | |
| 2559 { | |
| 2560 gcs->cs = this; | |
| 2561 sw->gotoCases.remove(i); // remove from array | |
| 2562 } | |
| 2563 } | |
| 2564 } | |
| 2565 else | |
| 2566 error("case not in switch statement"); | |
| 2567 statement = statement->semantic(sc); | |
| 2568 return this; | |
| 2569 } | |
| 2570 | |
| 2571 int CaseStatement::compare(Object *obj) | |
| 2572 { | |
| 2573 // Sort cases so we can do an efficient lookup | |
| 2574 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2575 | |
| 2576 return exp->compare(cs2->exp); | |
| 2577 } | |
| 2578 | |
| 2579 int CaseStatement::usesEH() | |
| 2580 { | |
| 2581 return statement->usesEH(); | |
| 2582 } | |
| 2583 | |
| 336 | 2584 int CaseStatement::blockExit() |
| 2585 { | |
| 2586 return statement->blockExit(); | |
| 2587 } | |
| 2588 | |
| 159 | 2589 int CaseStatement::fallOffEnd() |
| 2590 { | |
| 2591 return statement->fallOffEnd(); | |
| 2592 } | |
| 2593 | |
| 2594 int CaseStatement::comeFrom() | |
| 2595 { | |
| 2596 return TRUE; | |
| 2597 } | |
| 2598 | |
| 2599 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2600 { | |
| 2601 buf->writestring("case "); | |
| 2602 exp->toCBuffer(buf, hgs); | |
| 2603 buf->writebyte(':'); | |
| 2604 buf->writenl(); | |
| 2605 statement->toCBuffer(buf, hgs); | |
| 2606 } | |
| 2607 | |
| 2608 /******************************** DefaultStatement ***************************/ | |
| 2609 | |
| 2610 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 2611 : Statement(loc) | |
| 2612 { | |
| 2613 this->statement = s; | |
| 2614 #if IN_GCC | |
| 2615 + cblock = NULL; | |
| 2616 #endif | |
| 2617 bodyBB = NULL; | |
| 2618 } | |
| 2619 | |
| 2620 Statement *DefaultStatement::syntaxCopy() | |
| 2621 { | |
| 2622 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 2623 return s; | |
| 2624 } | |
| 2625 | |
| 2626 Statement *DefaultStatement::semantic(Scope *sc) | |
| 2627 { | |
| 336 | 2628 //printf("DefaultStatement::semantic()\n"); |
| 159 | 2629 if (sc->sw) |
| 2630 { | |
| 2631 if (sc->sw->sdefault) | |
| 2632 { | |
| 2633 error("switch statement already has a default"); | |
| 2634 } | |
| 2635 sc->sw->sdefault = this; | |
| 2636 } | |
| 2637 else | |
| 2638 error("default not in switch statement"); | |
| 2639 statement = statement->semantic(sc); | |
| 2640 return this; | |
| 2641 } | |
| 2642 | |
| 2643 int DefaultStatement::usesEH() | |
| 2644 { | |
| 2645 return statement->usesEH(); | |
| 2646 } | |
| 2647 | |
| 336 | 2648 int DefaultStatement::blockExit() |
| 2649 { | |
| 2650 return statement->blockExit(); | |
| 2651 } | |
| 2652 | |
| 159 | 2653 int DefaultStatement::fallOffEnd() |
| 2654 { | |
| 2655 return statement->fallOffEnd(); | |
| 2656 } | |
| 2657 | |
| 2658 int DefaultStatement::comeFrom() | |
| 2659 { | |
| 2660 return TRUE; | |
| 2661 } | |
| 2662 | |
| 2663 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2664 { | |
| 2665 buf->writestring("default:\n"); | |
| 2666 statement->toCBuffer(buf, hgs); | |
| 2667 } | |
| 2668 | |
| 2669 /******************************** GotoDefaultStatement ***************************/ | |
| 2670 | |
| 2671 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 2672 : Statement(loc) | |
| 2673 { | |
| 2674 sw = NULL; | |
| 309 | 2675 enclosinghandler = NULL; |
| 159 | 2676 } |
| 2677 | |
| 2678 Statement *GotoDefaultStatement::syntaxCopy() | |
| 2679 { | |
| 2680 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 2681 return s; | |
| 2682 } | |
| 2683 | |
| 2684 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 2685 { | |
| 309 | 2686 enclosinghandler = sc->tfOfTry; |
| 159 | 2687 sw = sc->sw; |
| 2688 if (!sw) | |
| 2689 error("goto default not in switch statement"); | |
| 2690 return this; | |
| 2691 } | |
| 2692 | |
| 336 | 2693 int GotoDefaultStatement::blockExit() |
| 2694 { | |
| 2695 return BEgoto; | |
| 2696 } | |
| 2697 | |
| 159 | 2698 int GotoDefaultStatement::fallOffEnd() |
| 2699 { | |
| 2700 return FALSE; | |
| 2701 } | |
| 2702 | |
| 2703 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2704 { | |
| 2705 buf->writestring("goto default;\n"); | |
| 2706 } | |
| 2707 | |
| 2708 /******************************** GotoCaseStatement ***************************/ | |
| 2709 | |
| 2710 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 2711 : Statement(loc) | |
| 2712 { | |
| 2713 cs = NULL; | |
| 2714 this->exp = exp; | |
| 309 | 2715 enclosinghandler = NULL; |
| 159 | 2716 sw = NULL; |
| 2717 } | |
| 2718 | |
| 2719 Statement *GotoCaseStatement::syntaxCopy() | |
| 2720 { | |
| 2721 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 2722 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 2723 return s; | |
| 2724 } | |
| 2725 | |
| 2726 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 2727 { | |
| 309 | 2728 enclosinghandler = sc->tfOfTry; |
| 159 | 2729 if (exp) |
| 2730 exp = exp->semantic(sc); | |
| 2731 | |
| 2732 if (!sc->sw) | |
| 2733 error("goto case not in switch statement"); | |
| 2734 else | |
| 2735 { | |
| 2736 sw = sc->sw; | |
| 2737 sc->sw->gotoCases.push(this); | |
| 2738 if (exp) | |
| 2739 { | |
| 2740 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 2741 exp = exp->optimize(WANTvalue); | |
| 2742 } | |
| 2743 } | |
| 2744 return this; | |
| 2745 } | |
| 2746 | |
| 336 | 2747 int GotoCaseStatement::blockExit() |
| 2748 { | |
| 2749 return BEgoto; | |
| 2750 } | |
| 2751 | |
| 159 | 2752 int GotoCaseStatement::fallOffEnd() |
| 2753 { | |
| 2754 return FALSE; | |
| 2755 } | |
| 2756 | |
| 2757 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2758 { | |
| 2759 buf->writestring("goto case"); | |
| 2760 if (exp) | |
| 2761 { buf->writebyte(' '); | |
| 2762 exp->toCBuffer(buf, hgs); | |
| 2763 } | |
| 2764 buf->writebyte(';'); | |
| 2765 buf->writenl(); | |
| 2766 } | |
| 2767 | |
| 2768 /******************************** SwitchErrorStatement ***************************/ | |
| 2769 | |
| 2770 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 2771 : Statement(loc) | |
| 2772 { | |
| 2773 } | |
| 2774 | |
| 336 | 2775 int SwitchErrorStatement::blockExit() |
| 2776 { | |
| 2777 return BEthrow; | |
| 2778 } | |
| 2779 | |
| 159 | 2780 int SwitchErrorStatement::fallOffEnd() |
| 2781 { | |
| 2782 return FALSE; | |
| 2783 } | |
| 2784 | |
| 2785 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2786 { | |
| 2787 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 2788 buf->writenl(); | |
| 2789 } | |
| 2790 | |
| 2791 /******************************** ReturnStatement ***************************/ | |
| 2792 | |
| 2793 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 2794 : Statement(loc) | |
| 2795 { | |
| 2796 this->exp = exp; | |
| 309 | 2797 this->enclosinghandler = NULL; |
| 159 | 2798 } |
| 2799 | |
| 2800 Statement *ReturnStatement::syntaxCopy() | |
| 2801 { | |
| 2802 Expression *e = NULL; | |
| 2803 if (exp) | |
| 2804 e = exp->syntaxCopy(); | |
| 2805 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 2806 return s; | |
| 2807 } | |
| 2808 | |
| 2809 Statement *ReturnStatement::semantic(Scope *sc) | |
| 2810 { | |
| 2811 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 309 | 2812 this->enclosinghandler = sc->tfOfTry; |
| 159 | 2813 |
| 2814 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 2815 Scope *scx = sc; | |
| 2816 int implicit0 = 0; | |
| 2817 | |
| 2818 if (sc->fes) | |
| 2819 { | |
| 2820 // Find scope of function foreach is in | |
| 2821 for (; 1; scx = scx->enclosing) | |
| 2822 { | |
| 2823 assert(scx); | |
| 2824 if (scx->func != fd) | |
| 2825 { fd = scx->func; // fd is now function enclosing foreach | |
| 2826 break; | |
| 2827 } | |
| 2828 } | |
| 2829 } | |
| 2830 | |
| 2831 Type *tret = fd->type->nextOf(); | |
| 2832 if (fd->tintro) | |
| 336 | 2833 /* We'll be implicitly casting the return expression to tintro |
| 2834 */ | |
| 159 | 2835 tret = fd->tintro->nextOf(); |
| 2836 Type *tbret = NULL; | |
| 2837 | |
| 2838 if (tret) | |
| 2839 tbret = tret->toBasetype(); | |
| 2840 | |
| 2841 // main() returns 0, even if it returns void | |
| 2842 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 2843 { implicit0 = 1; | |
| 2844 exp = new IntegerExp(0); | |
| 2845 } | |
| 2846 | |
| 2847 if (sc->incontract || scx->incontract) | |
| 2848 error("return statements cannot be in contracts"); | |
| 2849 if (sc->tf || scx->tf) | |
| 2850 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); | |
| 2851 | |
| 2852 if (fd->isCtorDeclaration()) | |
| 2853 { | |
| 2854 // Constructors implicitly do: | |
| 2855 // return this; | |
| 2856 if (exp && exp->op != TOKthis) | |
| 2857 error("cannot return expression from constructor"); | |
| 2858 exp = new ThisExp(0); | |
| 2859 } | |
| 2860 | |
| 2861 if (!exp) | |
| 2862 fd->nrvo_can = 0; | |
| 2863 | |
| 2864 if (exp) | |
| 2865 { | |
| 2866 fd->hasReturnExp |= 1; | |
| 2867 | |
| 2868 exp = exp->semantic(sc); | |
| 2869 exp = resolveProperties(sc, exp); | |
| 2870 exp = exp->optimize(WANTvalue); | |
| 2871 | |
| 2872 if (fd->nrvo_can && exp->op == TOKvar) | |
| 2873 { VarExp *ve = (VarExp *)exp; | |
| 2874 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 2875 | |
| 2876 if (!v || v->isOut() || v->isRef()) | |
| 2877 fd->nrvo_can = 0; | |
| 2878 else if (fd->nrvo_var == NULL) | |
| 2879 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 2880 fd->nrvo_var = v; | |
| 2881 else | |
| 2882 fd->nrvo_can = 0; | |
| 2883 } | |
| 2884 else if (fd->nrvo_var != v) | |
| 2885 fd->nrvo_can = 0; | |
| 2886 } | |
| 2887 else | |
| 2888 fd->nrvo_can = 0; | |
| 2889 | |
| 2890 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2891 { | |
| 2892 } | |
| 2893 else if (fd->inferRetType) | |
| 2894 { | |
| 2895 if (fd->type->nextOf()) | |
| 2896 { | |
| 2897 if (!exp->type->equals(fd->type->nextOf())) | |
| 2898 error("mismatched function return type inference of %s and %s", | |
| 2899 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 2900 } | |
| 2901 else | |
| 2902 { | |
| 2903 fd->type->next = exp->type; | |
| 2904 fd->type = fd->type->semantic(loc, sc); | |
| 2905 if (!fd->tintro) | |
| 2906 { tret = fd->type->nextOf(); | |
| 2907 tbret = tret->toBasetype(); | |
| 2908 } | |
| 2909 } | |
| 2910 } | |
| 2911 else if (tbret->ty != Tvoid) | |
| 2912 { | |
| 2913 exp = exp->implicitCastTo(sc, tret); | |
| 2914 } | |
| 2915 } | |
| 2916 else if (fd->inferRetType) | |
| 2917 { | |
| 2918 if (fd->type->nextOf()) | |
| 2919 { | |
| 2920 if (fd->type->nextOf()->ty != Tvoid) | |
| 2921 error("mismatched function return type inference of void and %s", | |
| 2922 fd->type->nextOf()->toChars()); | |
| 2923 } | |
| 2924 else | |
| 2925 { | |
| 2926 fd->type->next = Type::tvoid; | |
| 2927 fd->type = fd->type->semantic(loc, sc); | |
| 2928 if (!fd->tintro) | |
| 2929 { tret = Type::tvoid; | |
| 2930 tbret = tret; | |
| 2931 } | |
| 2932 } | |
| 2933 } | |
| 2934 else if (tbret->ty != Tvoid) // if non-void return | |
| 2935 error("return expression expected"); | |
| 2936 | |
| 2937 if (sc->fes) | |
| 2938 { | |
| 2939 Statement *s; | |
| 2940 | |
| 2941 if (exp && !implicit0) | |
| 2942 { | |
| 2943 exp = exp->implicitCastTo(sc, tret); | |
| 2944 } | |
| 2945 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 2946 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 2947 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 2948 exp->op == TOKstring) | |
| 2949 { | |
| 2950 sc->fes->cases.push(this); | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2951 // Construct: return cases.dim+1; |
| 159 | 2952 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 2953 } | |
| 2954 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 2955 { | |
| 2956 s = new ReturnStatement(0, NULL); | |
| 2957 sc->fes->cases.push(s); | |
| 2958 | |
| 2959 // Construct: { exp; return cases.dim + 1; } | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2960 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2961 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2962 s = new CompoundStatement(loc, s1, s2); |
| 2963 } | |
| 2964 else | |
| 2965 { | |
| 2966 // Construct: return vresult; | |
| 2967 if (!fd->vresult) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2968 { // Declare vresult |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2969 VarDeclaration *v = new VarDeclaration(loc, tret, Id::result, NULL); |
| 159 | 2970 v->noauto = 1; |
| 2971 v->semantic(scx); | |
| 2972 if (!scx->insert(v)) | |
| 2973 assert(0); | |
| 2974 v->parent = fd; | |
| 2975 fd->vresult = v; | |
| 2976 } | |
| 2977 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2978 s = new ReturnStatement(0, new VarExp(0, fd->vresult)); |
| 159 | 2979 sc->fes->cases.push(s); |
| 2980 | |
| 2981 // Construct: { vresult = exp; return cases.dim + 1; } | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2982 exp = new AssignExp(loc, new VarExp(0, fd->vresult), exp); |
| 159 | 2983 exp = exp->semantic(sc); |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2984 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2985 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2986 s = new CompoundStatement(loc, s1, s2); |
| 2987 } | |
| 2988 return s; | |
| 2989 } | |
| 2990 | |
| 2991 if (exp) | |
| 2992 { | |
| 2993 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2994 { | |
| 2995 assert(fd->vresult); | |
| 2996 VarExp *v = new VarExp(0, fd->vresult); | |
| 2997 | |
| 2998 exp = new AssignExp(loc, v, exp); | |
| 2999 exp = exp->semantic(sc); | |
| 3000 } | |
| 3001 //exp->dump(0); | |
| 3002 //exp->print(); | |
| 3003 exp->checkEscape(); | |
| 3004 } | |
| 3005 | |
| 3006 /* BUG: need to issue an error on: | |
| 3007 * this | |
| 3008 * { if (x) return; | |
| 3009 * super(); | |
| 3010 * } | |
| 3011 */ | |
| 3012 | |
| 3013 if (sc->callSuper & CSXany_ctor && | |
| 3014 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 3015 error("return without calling constructor"); | |
| 3016 | |
| 3017 sc->callSuper |= CSXreturn; | |
| 3018 | |
| 3019 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 3020 if (fd->returnLabel) | |
| 3021 { | |
| 3022 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 3023 | |
| 3024 gs->label = fd->returnLabel; | |
| 3025 if (exp) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3026 { /* Replace: return exp; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3027 * with: exp; goto returnLabel; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3028 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3029 Statement *s = new ExpStatement(0, exp); |
| 159 | 3030 return new CompoundStatement(loc, s, gs); |
| 3031 } | |
| 3032 return gs; | |
| 3033 } | |
| 3034 | |
| 3035 if (exp && tbret->ty == Tvoid && !fd->isMain()) | |
| 336 | 3036 { |
| 3037 /* Replace: | |
| 3038 * return exp; | |
| 3039 * with: | |
| 3040 * exp; return; | |
| 3041 */ | |
| 3042 Statement *s = new ExpStatement(loc, exp); | |
| 159 | 3043 loc = 0; |
| 3044 exp = NULL; | |
| 3045 return new CompoundStatement(loc, s, this); | |
| 3046 } | |
| 3047 | |
| 3048 return this; | |
| 3049 } | |
| 3050 | |
| 336 | 3051 int ReturnStatement::blockExit() |
| 3052 { int result = BEreturn; | |
| 3053 | |
| 3054 if (exp && exp->canThrow()) | |
| 3055 result |= BEthrow; | |
| 3056 return result; | |
| 3057 } | |
| 3058 | |
| 159 | 3059 int ReturnStatement::fallOffEnd() |
| 3060 { | |
| 3061 return FALSE; | |
| 3062 } | |
| 3063 | |
| 3064 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3065 { | |
| 3066 buf->printf("return "); | |
| 3067 if (exp) | |
| 3068 exp->toCBuffer(buf, hgs); | |
| 3069 buf->writeByte(';'); | |
| 3070 buf->writenl(); | |
| 3071 } | |
| 3072 | |
| 3073 /******************************** BreakStatement ***************************/ | |
| 3074 | |
| 3075 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 3076 : Statement(loc) | |
| 3077 { | |
| 3078 this->ident = ident; | |
| 309 | 3079 this->enclosinghandler = NULL; |
| 159 | 3080 } |
| 3081 | |
| 3082 Statement *BreakStatement::syntaxCopy() | |
| 3083 { | |
| 3084 BreakStatement *s = new BreakStatement(loc, ident); | |
| 3085 return s; | |
| 3086 } | |
| 3087 | |
| 3088 Statement *BreakStatement::semantic(Scope *sc) | |
| 3089 { | |
| 336 | 3090 //printf("BreakStatement::semantic()\n"); |
| 309 | 3091 enclosinghandler = sc->tfOfTry; |
| 159 | 3092 // If: |
| 3093 // break Identifier; | |
| 3094 if (ident) | |
| 3095 { | |
| 3096 Scope *scx; | |
| 3097 FuncDeclaration *thisfunc = sc->func; | |
| 3098 | |
| 3099 for (scx = sc; scx; scx = scx->enclosing) | |
| 3100 { | |
| 3101 LabelStatement *ls; | |
| 3102 | |
| 3103 if (scx->func != thisfunc) // if in enclosing function | |
| 3104 { | |
| 3105 if (sc->fes) // if this is the body of a foreach | |
| 3106 { | |
| 3107 /* Post this statement to the fes, and replace | |
| 3108 * it with a return value that caller will put into | |
| 3109 * a switch. Caller will figure out where the break | |
| 3110 * label actually is. | |
| 3111 * Case numbers start with 2, not 0, as 0 is continue | |
| 3112 * and 1 is break. | |
| 3113 */ | |
| 3114 Statement *s; | |
| 3115 sc->fes->cases.push(this); | |
| 3116 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3117 return s; | |
| 3118 } | |
| 3119 break; // can't break to it | |
| 3120 } | |
| 3121 | |
| 3122 ls = scx->slabel; | |
| 3123 if (ls && ls->ident == ident) | |
| 3124 { | |
| 3125 Statement *s = ls->statement; | |
| 3126 | |
| 3127 if (!s->hasBreak()) | |
| 3128 error("label '%s' has no break", ident->toChars()); | |
| 3129 if (ls->tf != sc->tf) | |
| 3130 error("cannot break out of finally block"); | |
| 3131 | |
| 3132 this->target = ls; | |
| 3133 return this; | |
| 3134 } | |
| 3135 } | |
| 3136 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 3137 } | |
| 3138 else if (!sc->sbreak) | |
| 3139 { | |
| 3140 if (sc->fes) | |
| 3141 { Statement *s; | |
| 3142 | |
| 3143 // Replace break; with return 1; | |
| 3144 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 3145 return s; | |
| 3146 } | |
| 3147 error("break is not inside a loop or switch"); | |
| 3148 } | |
| 3149 return this; | |
| 3150 } | |
| 3151 | |
| 336 | 3152 int BreakStatement::blockExit() |
| 3153 { | |
| 3154 //printf("BreakStatement::blockExit(%p) = x%x\n", this, ident ? BEgoto : BEbreak); | |
| 3155 return ident ? BEgoto : BEbreak; | |
| 3156 } | |
| 3157 | |
| 159 | 3158 int BreakStatement::fallOffEnd() |
| 3159 { | |
| 3160 return FALSE; | |
| 3161 } | |
| 3162 | |
| 3163 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3164 { | |
| 3165 buf->writestring("break"); | |
| 3166 if (ident) | |
| 3167 { buf->writebyte(' '); | |
| 3168 buf->writestring(ident->toChars()); | |
| 3169 } | |
| 3170 buf->writebyte(';'); | |
| 3171 buf->writenl(); | |
| 3172 } | |
| 3173 | |
| 3174 /******************************** ContinueStatement ***************************/ | |
| 3175 | |
| 3176 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 3177 : Statement(loc) | |
| 3178 { | |
| 3179 this->ident = ident; | |
| 309 | 3180 this->enclosinghandler = NULL; |
| 159 | 3181 } |
| 3182 | |
| 3183 Statement *ContinueStatement::syntaxCopy() | |
| 3184 { | |
| 3185 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 3186 return s; | |
| 3187 } | |
| 3188 | |
| 3189 Statement *ContinueStatement::semantic(Scope *sc) | |
| 3190 { | |
| 309 | 3191 enclosinghandler = sc->tfOfTry; |
| 159 | 3192 //printf("ContinueStatement::semantic() %p\n", this); |
| 3193 if (ident) | |
| 3194 { | |
| 3195 Scope *scx; | |
| 3196 FuncDeclaration *thisfunc = sc->func; | |
| 3197 | |
| 3198 for (scx = sc; scx; scx = scx->enclosing) | |
| 3199 { | |
| 3200 LabelStatement *ls; | |
| 3201 | |
| 3202 if (scx->func != thisfunc) // if in enclosing function | |
| 3203 { | |
| 3204 if (sc->fes) // if this is the body of a foreach | |
| 3205 { | |
| 3206 for (; scx; scx = scx->enclosing) | |
| 3207 { | |
| 3208 ls = scx->slabel; | |
| 3209 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 3210 { | |
| 3211 // Replace continue ident; with return 0; | |
| 3212 return new ReturnStatement(0, new IntegerExp(0)); | |
| 3213 } | |
| 3214 } | |
| 3215 | |
| 3216 /* Post this statement to the fes, and replace | |
| 3217 * it with a return value that caller will put into | |
| 3218 * a switch. Caller will figure out where the break | |
| 3219 * label actually is. | |
| 3220 * Case numbers start with 2, not 0, as 0 is continue | |
| 3221 * and 1 is break. | |
| 3222 */ | |
| 3223 Statement *s; | |
| 3224 sc->fes->cases.push(this); | |
| 3225 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3226 return s; | |
| 3227 } | |
| 3228 break; // can't continue to it | |
| 3229 } | |
| 3230 | |
| 3231 ls = scx->slabel; | |
| 3232 if (ls && ls->ident == ident) | |
| 3233 { | |
| 3234 Statement *s = ls->statement; | |
| 3235 | |
| 3236 if (!s->hasContinue()) | |
| 3237 error("label '%s' has no continue", ident->toChars()); | |
| 3238 if (ls->tf != sc->tf) | |
| 3239 error("cannot continue out of finally block"); | |
| 3240 | |
| 3241 this->target = ls; | |
| 3242 return this; | |
| 3243 } | |
| 3244 } | |
| 3245 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 3246 } | |
| 3247 else if (!sc->scontinue) | |
| 3248 { | |
| 3249 if (sc->fes) | |
| 3250 { Statement *s; | |
| 3251 | |
| 3252 // Replace continue; with return 0; | |
| 3253 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 3254 return s; | |
| 3255 } | |
| 3256 error("continue is not inside a loop"); | |
| 3257 } | |
| 3258 return this; | |
| 3259 } | |
| 3260 | |
| 336 | 3261 int ContinueStatement::blockExit() |
| 3262 { | |
| 3263 return ident ? BEgoto : BEcontinue; | |
| 3264 } | |
| 3265 | |
| 159 | 3266 int ContinueStatement::fallOffEnd() |
| 3267 { | |
| 3268 return FALSE; | |
| 3269 } | |
| 3270 | |
| 3271 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3272 { | |
| 3273 buf->writestring("continue"); | |
| 3274 if (ident) | |
| 3275 { buf->writebyte(' '); | |
| 3276 buf->writestring(ident->toChars()); | |
| 3277 } | |
| 3278 buf->writebyte(';'); | |
| 3279 buf->writenl(); | |
| 3280 } | |
| 3281 | |
| 3282 /******************************** SynchronizedStatement ***************************/ | |
| 3283 | |
| 3284 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 3285 : Statement(loc) | |
| 3286 { | |
| 3287 this->exp = exp; | |
| 3288 this->body = body; | |
| 3289 this->esync = NULL; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
3290 this->enclosinghandler = NULL; |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3291 // LDC |
| 309 | 3292 this->llsync = NULL; |
| 159 | 3293 } |
| 3294 | |
| 3295 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 3296 : Statement(loc) | |
| 3297 { | |
| 3298 this->exp = NULL; | |
| 3299 this->body = body; | |
| 3300 this->esync = esync; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
3301 this->enclosinghandler = NULL; |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3302 // LDC |
| 309 | 3303 this->llsync = NULL; |
| 159 | 3304 } |
| 3305 | |
| 3306 Statement *SynchronizedStatement::syntaxCopy() | |
| 3307 { | |
| 3308 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3309 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 3310 return s; | |
| 3311 } | |
| 3312 | |
| 3313 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 3314 { | |
| 3315 if (exp) | |
| 3316 { ClassDeclaration *cd; | |
| 3317 | |
| 3318 exp = exp->semantic(sc); | |
| 3319 exp = resolveProperties(sc, exp); | |
| 3320 cd = exp->type->isClassHandle(); | |
| 3321 if (!cd) | |
| 3322 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 3323 else if (cd->isInterfaceDeclaration()) | |
| 3324 { Type *t = new TypeIdentifier(0, Id::Object); | |
| 3325 | |
| 3326 t = t->semantic(0, sc); | |
| 3327 exp = new CastExp(loc, exp, t); | |
| 3328 exp = exp->semantic(sc); | |
| 3329 } | |
| 3330 } | |
| 3331 if (body) | |
| 309 | 3332 { |
| 3333 enclosinghandler = sc->tfOfTry; | |
| 3334 sc->tfOfTry = new EnclosingSynchro(this); | |
| 3335 body = body->semantic(sc); | |
| 3336 sc->tfOfTry = enclosinghandler; | |
| 3337 } | |
| 159 | 3338 return this; |
| 3339 } | |
| 3340 | |
| 3341 int SynchronizedStatement::hasBreak() | |
| 3342 { | |
| 3343 return FALSE; //TRUE; | |
| 3344 } | |
| 3345 | |
| 3346 int SynchronizedStatement::hasContinue() | |
| 3347 { | |
| 3348 return FALSE; //TRUE; | |
| 3349 } | |
| 3350 | |
| 3351 int SynchronizedStatement::usesEH() | |
| 3352 { | |
| 3353 return TRUE; | |
| 3354 } | |
| 3355 | |
| 336 | 3356 int SynchronizedStatement::blockExit() |
| 3357 { | |
| 3358 return body ? body->blockExit() : BEfallthru; | |
| 3359 } | |
| 3360 | |
| 159 | 3361 int SynchronizedStatement::fallOffEnd() |
| 3362 { | |
| 3363 return body ? body->fallOffEnd() : TRUE; | |
| 3364 } | |
| 3365 | |
| 3366 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3367 { | |
| 3368 buf->writestring("synchronized"); | |
| 3369 if (exp) | |
| 3370 { buf->writebyte('('); | |
| 3371 exp->toCBuffer(buf, hgs); | |
| 3372 buf->writebyte(')'); | |
| 3373 } | |
| 3374 if (body) | |
| 3375 { | |
| 3376 buf->writebyte(' '); | |
| 3377 body->toCBuffer(buf, hgs); | |
| 3378 } | |
| 3379 } | |
| 3380 | |
| 3381 /******************************** WithStatement ***************************/ | |
| 3382 | |
| 3383 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 3384 : Statement(loc) | |
| 3385 { | |
| 3386 this->exp = exp; | |
| 3387 this->body = body; | |
| 3388 wthis = NULL; | |
| 3389 } | |
| 3390 | |
| 3391 Statement *WithStatement::syntaxCopy() | |
| 3392 { | |
| 3393 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 3394 return s; | |
| 3395 } | |
| 3396 | |
| 3397 Statement *WithStatement::semantic(Scope *sc) | |
| 3398 { ScopeDsymbol *sym; | |
| 3399 Initializer *init; | |
| 3400 | |
| 3401 //printf("WithStatement::semantic()\n"); | |
| 3402 exp = exp->semantic(sc); | |
| 3403 exp = resolveProperties(sc, exp); | |
| 3404 if (exp->op == TOKimport) | |
| 3405 { ScopeExp *es = (ScopeExp *)exp; | |
| 3406 | |
| 3407 sym = es->sds; | |
| 3408 } | |
| 3409 else if (exp->op == TOKtype) | |
| 3410 { TypeExp *es = (TypeExp *)exp; | |
| 3411 | |
| 3412 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 3413 if (!sym) | |
| 3414 { error("%s has no members", es->toChars()); | |
| 3415 body = body->semantic(sc); | |
| 3416 return this; | |
| 3417 } | |
| 3418 } | |
| 3419 else | |
| 3420 { Type *t = exp->type; | |
| 3421 | |
| 3422 assert(t); | |
| 3423 t = t->toBasetype(); | |
| 3424 if (t->isClassHandle()) | |
| 3425 { | |
| 3426 init = new ExpInitializer(loc, exp); | |
| 3427 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3428 wthis->semantic(sc); | |
| 3429 | |
| 3430 sym = new WithScopeSymbol(this); | |
| 3431 sym->parent = sc->scopesym; | |
| 3432 } | |
| 3433 else if (t->ty == Tstruct) | |
| 3434 { | |
| 3435 Expression *e = exp->addressOf(sc); | |
| 3436 init = new ExpInitializer(loc, e); | |
| 3437 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3438 wthis->semantic(sc); | |
| 3439 sym = new WithScopeSymbol(this); | |
| 3440 sym->parent = sc->scopesym; | |
| 3441 } | |
| 3442 else | |
| 3443 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3444 return NULL; | |
| 3445 } | |
| 3446 } | |
| 3447 sc = sc->push(sym); | |
| 3448 | |
| 3449 if (body) | |
| 3450 body = body->semantic(sc); | |
| 3451 | |
| 3452 sc->pop(); | |
| 3453 | |
| 3454 return this; | |
| 3455 } | |
| 3456 | |
| 3457 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3458 { | |
| 3459 buf->writestring("with ("); | |
| 3460 exp->toCBuffer(buf, hgs); | |
| 3461 buf->writestring(")\n"); | |
| 3462 if (body) | |
| 3463 body->toCBuffer(buf, hgs); | |
| 3464 } | |
| 3465 | |
| 3466 int WithStatement::usesEH() | |
| 3467 { | |
| 3468 return body ? body->usesEH() : 0; | |
| 3469 } | |
| 3470 | |
| 336 | 3471 int WithStatement::blockExit() |
| 3472 { | |
| 3473 int result = BEnone; | |
| 3474 if (exp->canThrow()) | |
| 3475 result = BEthrow; | |
| 3476 if (body) | |
| 3477 result |= body->blockExit(); | |
| 3478 else | |
| 3479 result |= BEfallthru; | |
| 3480 return result; | |
| 3481 } | |
| 3482 | |
| 159 | 3483 int WithStatement::fallOffEnd() |
| 3484 { | |
| 3485 return body ? body->fallOffEnd() : TRUE; | |
| 3486 } | |
| 3487 | |
| 3488 /******************************** TryCatchStatement ***************************/ | |
| 3489 | |
| 3490 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3491 : Statement(loc) | |
| 3492 { | |
| 3493 this->body = body; | |
| 3494 this->catches = catches; | |
| 3495 } | |
| 3496 | |
| 3497 Statement *TryCatchStatement::syntaxCopy() | |
| 3498 { | |
| 3499 Array *a = new Array(); | |
| 3500 a->setDim(catches->dim); | |
| 3501 for (int i = 0; i < a->dim; i++) | |
| 3502 { Catch *c; | |
| 3503 | |
| 3504 c = (Catch *)catches->data[i]; | |
| 3505 c = c->syntaxCopy(); | |
| 3506 a->data[i] = c; | |
| 3507 } | |
| 3508 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3509 return s; | |
| 3510 } | |
| 3511 | |
| 3512 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3513 { | |
| 3514 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3515 | |
| 336 | 3516 /* Even if body is NULL, still do semantic analysis on catches |
| 3517 */ | |
| 3518 for (size_t i = 0; i < catches->dim; i++) | |
| 3519 { Catch *c = (Catch *)catches->data[i]; | |
| 159 | 3520 c->semantic(sc); |
| 3521 | |
| 3522 // Determine if current catch 'hides' any previous catches | |
| 336 | 3523 for (size_t j = 0; j < i; j++) |
| 159 | 3524 { Catch *cj = (Catch *)catches->data[j]; |
| 3525 char *si = c->loc.toChars(); | |
| 3526 char *sj = cj->loc.toChars(); | |
| 3527 | |
| 3528 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3529 error("catch at %s hides catch at %s", sj, si); | |
| 3530 } | |
| 3531 } | |
| 3532 return this; | |
| 3533 } | |
| 3534 | |
| 3535 int TryCatchStatement::hasBreak() | |
| 3536 { | |
| 3537 return FALSE; //TRUE; | |
| 3538 } | |
| 3539 | |
| 3540 int TryCatchStatement::usesEH() | |
| 3541 { | |
| 3542 return TRUE; | |
| 3543 } | |
| 3544 | |
| 336 | 3545 int TryCatchStatement::blockExit() |
| 3546 { int result; | |
| 3547 | |
| 3548 assert(body); | |
| 3549 result = body->blockExit(); | |
| 3550 | |
| 3551 for (size_t i = 0; i < catches->dim; i++) | |
| 3552 { | |
| 3553 Catch *c = (Catch *)catches->data[i]; | |
| 3554 result |= c->blockExit(); | |
| 3555 } | |
| 3556 return result; | |
| 3557 } | |
| 3558 | |
| 159 | 3559 int TryCatchStatement::fallOffEnd() |
| 3560 { | |
| 3561 int result = FALSE; | |
| 3562 | |
| 3563 if (body) | |
| 3564 result = body->fallOffEnd(); | |
| 3565 for (int i = 0; i < catches->dim; i++) | |
| 3566 { Catch *c; | |
| 3567 | |
| 3568 c = (Catch *)catches->data[i]; | |
| 3569 if (c->handler) | |
| 3570 result |= c->handler->fallOffEnd(); | |
| 3571 } | |
| 3572 return result; | |
| 3573 } | |
| 3574 | |
| 3575 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3576 { | |
| 3577 buf->writestring("try"); | |
| 3578 buf->writenl(); | |
| 3579 if (body) | |
| 3580 body->toCBuffer(buf, hgs); | |
| 336 | 3581 for (size_t i = 0; i < catches->dim; i++) |
| 159 | 3582 { |
| 3583 Catch *c = (Catch *)catches->data[i]; | |
| 3584 c->toCBuffer(buf, hgs); | |
| 3585 } | |
| 3586 } | |
| 3587 | |
| 3588 /******************************** Catch ***************************/ | |
| 3589 | |
| 3590 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 3591 { | |
| 3592 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 3593 this->loc = loc; | |
| 3594 this->type = t; | |
| 3595 this->ident = id; | |
| 3596 this->handler = handler; | |
| 3597 var = NULL; | |
| 3598 } | |
| 3599 | |
| 3600 Catch *Catch::syntaxCopy() | |
| 3601 { | |
| 3602 Catch *c = new Catch(loc, | |
| 3603 (type ? type->syntaxCopy() : NULL), | |
| 3604 ident, | |
| 3605 (handler ? handler->syntaxCopy() : NULL)); | |
| 3606 return c; | |
| 3607 } | |
| 3608 | |
| 3609 void Catch::semantic(Scope *sc) | |
| 3610 { ScopeDsymbol *sym; | |
| 3611 | |
| 3612 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 3613 | |
| 3614 #ifndef IN_GCC | |
| 3615 if (sc->tf) | |
| 3616 { | |
| 3617 /* This is because the _d_local_unwind() gets the stack munged | |
| 3618 * up on this. The workaround is to place any try-catches into | |
| 3619 * a separate function, and call that. | |
| 3620 * To fix, have the compiler automatically convert the finally | |
| 3621 * body into a nested function. | |
| 3622 */ | |
| 3623 error(loc, "cannot put catch statement inside finally block"); | |
| 3624 } | |
| 3625 #endif | |
| 3626 | |
| 3627 sym = new ScopeDsymbol(); | |
| 3628 sym->parent = sc->scopesym; | |
| 3629 sc = sc->push(sym); | |
| 3630 | |
| 3631 if (!type) | |
| 3632 type = new TypeIdentifier(0, Id::Object); | |
| 3633 type = type->semantic(loc, sc); | |
| 3634 if (!type->toBasetype()->isClassHandle()) | |
| 3635 error("can only catch class objects, not '%s'", type->toChars()); | |
| 3636 else if (ident) | |
| 3637 { | |
| 3638 var = new VarDeclaration(loc, type, ident, NULL); | |
| 3639 var->parent = sc->parent; | |
| 3640 sc->insert(var); | |
| 3641 } | |
| 3642 handler = handler->semantic(sc); | |
| 3643 | |
| 3644 sc->pop(); | |
| 3645 } | |
| 3646 | |
| 336 | 3647 int Catch::blockExit() |
| 3648 { | |
| 3649 return handler ? handler->blockExit() : BEfallthru; | |
| 3650 } | |
| 3651 | |
| 159 | 3652 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3653 { | |
| 3654 buf->writestring("catch"); | |
| 3655 if (type) | |
| 3656 { buf->writebyte('('); | |
| 3657 type->toCBuffer(buf, ident, hgs); | |
| 3658 buf->writebyte(')'); | |
| 3659 } | |
| 3660 buf->writenl(); | |
| 3661 buf->writebyte('{'); | |
| 3662 buf->writenl(); | |
| 336 | 3663 if (handler) |
| 3664 handler->toCBuffer(buf, hgs); | |
| 159 | 3665 buf->writebyte('}'); |
| 3666 buf->writenl(); | |
| 3667 } | |
| 3668 | |
| 3669 /****************************** TryFinallyStatement ***************************/ | |
| 3670 | |
| 3671 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 3672 : Statement(loc) | |
| 3673 { | |
| 3674 this->body = body; | |
| 3675 this->finalbody = finalbody; | |
| 309 | 3676 this->enclosinghandler = NULL; |
| 159 | 3677 } |
| 3678 | |
| 3679 Statement *TryFinallyStatement::syntaxCopy() | |
| 3680 { | |
| 3681 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 3682 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 3683 return s; | |
| 3684 } | |
| 3685 | |
| 3686 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 3687 { | |
| 3688 //printf("TryFinallyStatement::semantic()\n"); | |
| 3689 | |
| 309 | 3690 enclosinghandler = sc->tfOfTry; |
| 3691 sc->tfOfTry = new EnclosingTryFinally(this); | |
| 159 | 3692 body = body->semantic(sc); |
| 309 | 3693 sc->tfOfTry = enclosinghandler; |
| 159 | 3694 |
| 3695 sc = sc->push(); | |
| 3696 sc->tf = this; | |
| 3697 sc->sbreak = NULL; | |
| 3698 sc->scontinue = NULL; // no break or continue out of finally block | |
| 3699 finalbody = finalbody->semantic(sc); | |
| 3700 sc->pop(); | |
| 3701 return this; | |
| 3702 } | |
| 3703 | |
| 3704 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3705 { | |
| 3706 buf->printf("try\n{\n"); | |
| 3707 body->toCBuffer(buf, hgs); | |
| 3708 buf->printf("}\nfinally\n{\n"); | |
| 3709 finalbody->toCBuffer(buf, hgs); | |
| 3710 buf->writeByte('}'); | |
| 3711 buf->writenl(); | |
| 3712 } | |
| 3713 | |
| 3714 int TryFinallyStatement::hasBreak() | |
| 3715 { | |
| 3716 return FALSE; //TRUE; | |
| 3717 } | |
| 3718 | |
| 3719 int TryFinallyStatement::hasContinue() | |
| 3720 { | |
| 3721 return FALSE; //TRUE; | |
| 3722 } | |
| 3723 | |
| 3724 int TryFinallyStatement::usesEH() | |
| 3725 { | |
| 3726 return TRUE; | |
| 3727 } | |
| 3728 | |
| 336 | 3729 int TryFinallyStatement::blockExit() |
| 3730 { | |
| 3731 int result = body->blockExit(); | |
| 3732 return result; | |
| 3733 } | |
| 3734 | |
| 159 | 3735 int TryFinallyStatement::fallOffEnd() |
| 3736 { int result; | |
| 3737 | |
| 3738 result = body ? body->fallOffEnd() : TRUE; | |
| 3739 // if (finalbody) | |
| 3740 // result = finalbody->fallOffEnd(); | |
| 3741 return result; | |
| 3742 } | |
| 3743 | |
| 3744 /****************************** OnScopeStatement ***************************/ | |
| 3745 | |
| 3746 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 3747 : Statement(loc) | |
| 3748 { | |
| 3749 this->tok = tok; | |
| 3750 this->statement = statement; | |
| 3751 } | |
| 3752 | |
| 3753 Statement *OnScopeStatement::syntaxCopy() | |
| 3754 { | |
| 3755 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 3756 tok, statement->syntaxCopy()); | |
| 3757 return s; | |
| 3758 } | |
| 3759 | |
| 3760 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 3761 { | |
| 3762 /* semantic is called on results of scopeCode() */ | |
| 3763 return this; | |
| 3764 } | |
| 3765 | |
| 336 | 3766 int OnScopeStatement::blockExit() |
| 3767 { // At this point, this statement is just an empty placeholder | |
| 3768 return BEfallthru; | |
| 3769 } | |
| 3770 | |
| 159 | 3771 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3772 { | |
| 3773 buf->writestring(Token::toChars(tok)); | |
| 3774 buf->writebyte(' '); | |
| 3775 statement->toCBuffer(buf, hgs); | |
| 3776 } | |
| 3777 | |
| 3778 int OnScopeStatement::usesEH() | |
| 3779 { | |
| 3780 return (tok != TOKon_scope_success); | |
| 3781 } | |
| 3782 | |
| 3783 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 3784 { | |
| 3785 //printf("OnScopeStatement::scopeCode()\n"); | |
| 3786 //print(); | |
| 3787 *sentry = NULL; | |
| 3788 *sexception = NULL; | |
| 3789 *sfinally = NULL; | |
| 3790 switch (tok) | |
| 3791 { | |
| 3792 case TOKon_scope_exit: | |
| 3793 *sfinally = statement; | |
| 3794 break; | |
| 3795 | |
| 3796 case TOKon_scope_failure: | |
| 3797 *sexception = statement; | |
| 3798 break; | |
| 3799 | |
| 3800 case TOKon_scope_success: | |
| 3801 { | |
| 3802 /* Create: | |
| 3803 * sentry: int x = 0; | |
| 3804 * sexception: x = 1; | |
| 3805 * sfinally: if (!x) statement; | |
| 3806 */ | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3807 Identifier *id = Lexer::uniqueId("__os"); |
| 159 | 3808 |
| 3809 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 3810 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 3811 *sentry = new DeclarationStatement(loc, v); | |
| 3812 | |
| 3813 Expression *e = new IntegerExp(1); | |
| 3814 e = new AssignExp(0, new VarExp(0, v), e); | |
| 3815 *sexception = new ExpStatement(0, e); | |
| 3816 | |
| 3817 e = new VarExp(0, v); | |
| 3818 e = new NotExp(0, e); | |
| 3819 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 3820 | |
| 3821 break; | |
| 3822 } | |
| 3823 | |
| 3824 default: | |
| 3825 assert(0); | |
| 3826 } | |
| 3827 } | |
| 3828 | |
| 3829 /******************************** ThrowStatement ***************************/ | |
| 3830 | |
| 3831 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 3832 : Statement(loc) | |
| 3833 { | |
| 3834 this->exp = exp; | |
| 3835 } | |
| 3836 | |
| 3837 Statement *ThrowStatement::syntaxCopy() | |
| 3838 { | |
| 3839 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 3840 return s; | |
| 3841 } | |
| 3842 | |
| 3843 Statement *ThrowStatement::semantic(Scope *sc) | |
| 3844 { | |
| 3845 //printf("ThrowStatement::semantic()\n"); | |
| 3846 | |
| 3847 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3848 fd->hasReturnExp |= 2; | |
| 3849 | |
| 3850 if (sc->incontract) | |
| 3851 error("Throw statements cannot be in contracts"); | |
| 3852 exp = exp->semantic(sc); | |
| 3853 exp = resolveProperties(sc, exp); | |
| 3854 if (!exp->type->toBasetype()->isClassHandle()) | |
| 3855 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 3856 return this; | |
| 3857 } | |
| 3858 | |
| 336 | 3859 int ThrowStatement::blockExit() |
| 3860 { | |
| 3861 return BEthrow; // obviously | |
| 3862 } | |
| 3863 | |
| 159 | 3864 int ThrowStatement::fallOffEnd() |
| 3865 { | |
| 3866 return FALSE; | |
| 3867 } | |
| 3868 | |
| 3869 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3870 { | |
| 3871 buf->printf("throw "); | |
| 3872 exp->toCBuffer(buf, hgs); | |
| 3873 buf->writeByte(';'); | |
| 3874 buf->writenl(); | |
| 3875 } | |
| 3876 | |
| 3877 /******************************** VolatileStatement **************************/ | |
| 3878 | |
| 3879 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 3880 : Statement(loc) | |
| 3881 { | |
| 3882 this->statement = statement; | |
| 309 | 3883 this->enclosinghandler = NULL; |
| 159 | 3884 } |
| 3885 | |
| 3886 Statement *VolatileStatement::syntaxCopy() | |
| 3887 { | |
| 3888 VolatileStatement *s = new VolatileStatement(loc, | |
| 3889 statement ? statement->syntaxCopy() : NULL); | |
| 3890 return s; | |
| 3891 } | |
| 3892 | |
| 3893 Statement *VolatileStatement::semantic(Scope *sc) | |
| 3894 { | |
| 309 | 3895 if (statement) |
| 3896 { | |
| 3897 enclosinghandler = sc->tfOfTry; | |
| 3898 sc->tfOfTry = new EnclosingVolatile(this); | |
| 3899 statement = statement->semantic(sc); | |
| 3900 sc->tfOfTry = enclosinghandler; | |
| 3901 } | |
| 159 | 3902 return this; |
| 3903 } | |
| 3904 | |
| 3905 Statements *VolatileStatement::flatten(Scope *sc) | |
| 3906 { | |
| 3907 Statements *a; | |
| 3908 | |
| 3909 a = statement ? statement->flatten(sc) : NULL; | |
| 3910 if (a) | |
| 3911 { for (int i = 0; i < a->dim; i++) | |
| 3912 { Statement *s = (Statement *)a->data[i]; | |
| 3913 | |
| 3914 s = new VolatileStatement(loc, s); | |
| 3915 a->data[i] = s; | |
| 3916 } | |
| 3917 } | |
| 3918 | |
| 3919 return a; | |
| 3920 } | |
| 3921 | |
| 336 | 3922 int VolatileStatement::blockExit() |
| 3923 { | |
| 3924 return statement ? statement->blockExit() : BEfallthru; | |
| 3925 } | |
| 3926 | |
| 159 | 3927 int VolatileStatement::fallOffEnd() |
| 3928 { | |
| 3929 return statement ? statement->fallOffEnd() : TRUE; | |
| 3930 } | |
| 3931 | |
| 3932 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3933 { | |
| 3934 buf->writestring("volatile"); | |
| 3935 if (statement) | |
| 3936 { if (statement->isScopeStatement()) | |
| 3937 buf->writenl(); | |
| 3938 else | |
| 3939 buf->writebyte(' '); | |
| 3940 statement->toCBuffer(buf, hgs); | |
| 3941 } | |
| 3942 } | |
| 3943 | |
| 3944 | |
| 3945 /******************************** GotoStatement ***************************/ | |
| 3946 | |
| 3947 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 3948 : Statement(loc) | |
| 3949 { | |
| 3950 this->ident = ident; | |
| 3951 this->label = NULL; | |
| 3952 this->tf = NULL; | |
| 309 | 3953 this->enclosinghandler = NULL; |
| 159 | 3954 } |
| 3955 | |
| 3956 Statement *GotoStatement::syntaxCopy() | |
| 3957 { | |
| 3958 GotoStatement *s = new GotoStatement(loc, ident); | |
| 3959 return s; | |
| 3960 } | |
| 3961 | |
| 3962 Statement *GotoStatement::semantic(Scope *sc) | |
| 3963 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3964 | |
| 3965 //printf("GotoStatement::semantic()\n"); | |
| 3966 tf = sc->tf; | |
| 309 | 3967 enclosinghandler = sc->tfOfTry; |
| 159 | 3968 label = fd->searchLabel(ident); |
| 3969 if (!label->statement && sc->fes) | |
| 3970 { | |
| 3971 /* Either the goto label is forward referenced or it | |
| 3972 * is in the function that the enclosing foreach is in. | |
| 3973 * Can't know yet, so wrap the goto in a compound statement | |
| 3974 * so we can patch it later, and add it to a 'look at this later' | |
| 3975 * list. | |
| 3976 */ | |
| 3977 Statements *a = new Statements(); | |
| 3978 Statement *s; | |
| 3979 | |
| 3980 a->push(this); | |
| 3981 s = new CompoundStatement(loc, a); | |
| 3982 sc->fes->gotos.push(s); // 'look at this later' list | |
| 3983 return s; | |
| 3984 } | |
| 3985 if (label->statement && label->statement->tf != sc->tf) | |
| 3986 error("cannot goto in or out of finally block"); | |
| 3987 return this; | |
| 3988 } | |
| 3989 | |
| 336 | 3990 int GotoStatement::blockExit() |
| 3991 { | |
| 3992 //printf("GotoStatement::blockExit(%p)\n", this); | |
| 3993 return BEgoto; | |
| 3994 } | |
| 3995 | |
| 159 | 3996 int GotoStatement::fallOffEnd() |
| 3997 { | |
| 3998 return FALSE; | |
| 3999 } | |
| 4000 | |
| 4001 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4002 { | |
| 4003 buf->writestring("goto "); | |
| 4004 buf->writestring(ident->toChars()); | |
| 4005 buf->writebyte(';'); | |
| 4006 buf->writenl(); | |
| 4007 } | |
| 4008 | |
| 4009 /******************************** LabelStatement ***************************/ | |
| 4010 | |
| 4011 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 4012 : Statement(loc) | |
| 4013 { | |
| 4014 this->ident = ident; | |
| 4015 this->statement = statement; | |
| 4016 this->tf = NULL; | |
| 309 | 4017 this->enclosinghandler = NULL; |
| 159 | 4018 this->lblock = NULL; |
| 4019 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
|
4020 this->asmLabel = false; |
| 159 | 4021 } |
| 4022 | |
| 4023 Statement *LabelStatement::syntaxCopy() | |
| 4024 { | |
| 4025 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 4026 return s; | |
| 4027 } | |
| 4028 | |
| 4029 Statement *LabelStatement::semantic(Scope *sc) | |
| 4030 { LabelDsymbol *ls; | |
| 4031 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 4032 | |
| 4033 //printf("LabelStatement::semantic()\n"); | |
| 4034 ls = fd->searchLabel(ident); | |
| 4035 if (ls->statement) | |
| 4036 error("Label '%s' already defined", ls->toChars()); | |
| 4037 else | |
| 4038 ls->statement = this; | |
| 4039 tf = sc->tf; | |
| 309 | 4040 enclosinghandler = sc->tfOfTry; |
| 159 | 4041 sc = sc->push(); |
| 4042 sc->scopesym = sc->enclosing->scopesym; | |
| 4043 sc->callSuper |= CSXlabel; | |
| 4044 sc->slabel = this; | |
| 4045 if (statement) | |
| 4046 statement = statement->semantic(sc); | |
| 4047 sc->pop(); | |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
4048 |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
4049 // 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
|
4050 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
|
4051 |
| 159 | 4052 return this; |
| 4053 } | |
| 4054 | |
| 4055 Statements *LabelStatement::flatten(Scope *sc) | |
| 4056 { | |
| 4057 Statements *a = NULL; | |
| 4058 | |
| 4059 if (statement) | |
| 4060 { | |
| 4061 a = statement->flatten(sc); | |
| 4062 if (a) | |
| 4063 { | |
| 4064 if (!a->dim) | |
| 4065 { | |
| 4066 a->push(new ExpStatement(loc, NULL)); | |
| 4067 } | |
| 4068 Statement *s = (Statement *)a->data[0]; | |
| 4069 | |
| 4070 s = new LabelStatement(loc, ident, s); | |
| 4071 a->data[0] = s; | |
| 4072 } | |
| 4073 } | |
| 4074 | |
| 4075 return a; | |
| 4076 } | |
| 4077 | |
| 4078 | |
| 4079 int LabelStatement::usesEH() | |
| 4080 { | |
| 4081 return statement ? statement->usesEH() : FALSE; | |
| 4082 } | |
| 4083 | |
| 336 | 4084 int LabelStatement::blockExit() |
| 4085 { | |
| 4086 //printf("LabelStatement::blockExit(%p)\n", this); | |
| 4087 return statement ? statement->blockExit() : BEfallthru; | |
| 4088 } | |
| 4089 | |
| 159 | 4090 int LabelStatement::fallOffEnd() |
| 4091 { | |
| 4092 return statement ? statement->fallOffEnd() : TRUE; | |
| 4093 } | |
| 4094 | |
| 4095 int LabelStatement::comeFrom() | |
| 4096 { | |
| 4097 //printf("LabelStatement::comeFrom()\n"); | |
| 4098 return TRUE; | |
| 4099 } | |
| 4100 | |
| 4101 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4102 { | |
| 4103 buf->writestring(ident->toChars()); | |
| 4104 buf->writebyte(':'); | |
| 4105 buf->writenl(); | |
| 4106 if (statement) | |
| 4107 statement->toCBuffer(buf, hgs); | |
| 4108 } | |
| 4109 | |
| 4110 | |
| 4111 /******************************** LabelDsymbol ***************************/ | |
| 4112 | |
| 4113 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 4114 : Dsymbol(ident) | |
| 4115 { | |
| 4116 statement = NULL; | |
| 4117 } | |
| 4118 | |
| 4119 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 4120 { | |
| 4121 return this; | |
| 4122 } | |
| 4123 | |
| 4124 |