Mercurial > projects > ldc
annotate dmd/statement.c @ 1141:f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
implement the synchronized storage class for functions.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Tue, 24 Mar 2009 21:18:18 +0100 |
| parents | eeb8b95ea92e |
| children | c6d6a68bb5db |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
|
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3 // Copyright (c) 1999-2009 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 | |
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15 #include "rmem.h" |
| 159 | 16 |
| 17 #include "statement.h" | |
| 18 #include "expression.h" | |
| 19 #include "cond.h" | |
| 20 #include "init.h" | |
| 21 #include "staticassert.h" | |
| 22 #include "mtype.h" | |
| 23 #include "scope.h" | |
| 24 #include "declaration.h" | |
| 25 #include "aggregate.h" | |
| 26 #include "id.h" | |
| 27 #include "hdrgen.h" | |
| 28 #include "parse.h" | |
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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 | |
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99 void Statement::warning(const char *format, ...) |
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100 { |
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101 if (global.params.warnings && !global.gag) |
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102 { |
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103 va_list ap; |
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104 va_start(ap, format); |
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105 ::vwarning(loc, format, ap); |
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106 va_end( ap ); |
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107 } |
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108 } |
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109 |
| 159 | 110 int Statement::hasBreak() |
| 111 { | |
| 112 //printf("Statement::hasBreak()\n"); | |
| 113 return FALSE; | |
| 114 } | |
| 115 | |
| 116 int Statement::hasContinue() | |
| 117 { | |
| 118 return FALSE; | |
| 119 } | |
| 120 | |
| 121 // TRUE if statement uses exception handling | |
| 122 | |
| 123 int Statement::usesEH() | |
| 124 { | |
| 125 return FALSE; | |
| 126 } | |
| 127 | |
| 336 | 128 /* Only valid after semantic analysis |
| 129 */ | |
| 130 int Statement::blockExit() | |
| 131 { | |
| 132 printf("Statement::blockExit(%p)\n", this); | |
| 133 printf("%s\n", toChars()); | |
| 134 assert(0); | |
| 135 return BEany; | |
| 136 } | |
| 137 | |
| 159 | 138 // TRUE if statement 'comes from' somewhere else, like a goto |
| 139 | |
| 140 int Statement::comeFrom() | |
| 141 { | |
| 142 //printf("Statement::comeFrom()\n"); | |
| 143 return FALSE; | |
| 144 } | |
| 145 | |
| 146 /**************************************** | |
| 147 * If this statement has code that needs to run in a finally clause | |
| 148 * at the end of the current scope, return that code in the form of | |
| 149 * a Statement. | |
| 150 * Output: | |
| 151 * *sentry code executed upon entry to the scope | |
| 152 * *sexception code executed upon exit from the scope via exception | |
| 153 * *sfinally code executed in finally block | |
| 154 */ | |
| 155 | |
| 156 void Statement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 157 { | |
| 158 //printf("Statement::scopeCode()\n"); | |
| 159 //print(); | |
| 160 *sentry = NULL; | |
| 161 *sexception = NULL; | |
| 162 *sfinally = NULL; | |
| 163 } | |
| 164 | |
| 165 /********************************* | |
| 166 * Flatten out the scope by presenting the statement | |
| 167 * as an array of statements. | |
| 168 * Returns NULL if no flattening necessary. | |
| 169 */ | |
| 170 | |
| 171 Statements *Statement::flatten(Scope *sc) | |
| 172 { | |
| 173 return NULL; | |
| 174 } | |
| 175 | |
| 176 | |
| 177 /******************************** ExpStatement ***************************/ | |
| 178 | |
| 179 ExpStatement::ExpStatement(Loc loc, Expression *exp) | |
| 180 : Statement(loc) | |
| 181 { | |
| 182 this->exp = exp; | |
| 183 } | |
| 184 | |
| 185 Statement *ExpStatement::syntaxCopy() | |
| 186 { | |
| 187 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 188 ExpStatement *es = new ExpStatement(loc, e); | |
| 189 return es; | |
| 190 } | |
| 191 | |
| 192 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 193 { | |
| 194 if (exp) | |
| 195 exp->toCBuffer(buf, hgs); | |
| 196 buf->writeByte(';'); | |
| 197 if (!hgs->FLinit.init) | |
| 198 buf->writenl(); | |
| 199 } | |
| 200 | |
| 201 Statement *ExpStatement::semantic(Scope *sc) | |
| 202 { | |
| 203 if (exp) | |
| 204 { | |
| 205 //printf("ExpStatement::semantic() %s\n", exp->toChars()); | |
| 206 exp = exp->semantic(sc); | |
| 207 exp = resolveProperties(sc, exp); | |
| 208 exp->checkSideEffect(0); | |
| 209 exp = exp->optimize(0); | |
| 210 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0); | |
| 211 } | |
| 212 return this; | |
| 213 } | |
| 214 | |
| 336 | 215 int ExpStatement::blockExit() |
| 216 { int result = BEfallthru; | |
| 217 | |
| 218 if (exp) | |
| 219 { | |
| 220 if (exp->op == TOKhalt) | |
| 221 return BEhalt; | |
| 222 if (exp->op == TOKassert) | |
| 223 { AssertExp *a = (AssertExp *)exp; | |
| 224 | |
| 225 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 226 return BEhalt; | |
| 227 } | |
| 228 if (exp->canThrow()) | |
| 229 result |= BEthrow; | |
| 230 } | |
| 231 return result; | |
| 232 } | |
| 233 | |
| 159 | 234 |
| 235 /******************************** CompileStatement ***************************/ | |
| 236 | |
| 237 CompileStatement::CompileStatement(Loc loc, Expression *exp) | |
| 238 : Statement(loc) | |
| 239 { | |
| 240 this->exp = exp; | |
| 241 } | |
| 242 | |
| 243 Statement *CompileStatement::syntaxCopy() | |
| 244 { | |
| 245 Expression *e = exp->syntaxCopy(); | |
| 246 CompileStatement *es = new CompileStatement(loc, e); | |
| 247 return es; | |
| 248 } | |
| 249 | |
| 250 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 251 { | |
| 252 buf->writestring("mixin("); | |
| 253 exp->toCBuffer(buf, hgs); | |
| 254 buf->writestring(");"); | |
| 255 if (!hgs->FLinit.init) | |
| 256 buf->writenl(); | |
| 257 } | |
| 258 | |
| 336 | 259 Statements *CompileStatement::flatten(Scope *sc) |
| 159 | 260 { |
| 336 | 261 //printf("CompileStatement::flatten() %s\n", exp->toChars()); |
| 159 | 262 exp = exp->semantic(sc); |
| 263 exp = resolveProperties(sc, exp); | |
| 264 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 265 if (exp->op != TOKstring) | |
| 266 { error("argument to mixin must be a string, not (%s)", exp->toChars()); | |
| 336 | 267 return NULL; |
| 159 | 268 } |
| 269 StringExp *se = (StringExp *)exp; | |
| 270 se = se->toUTF8(sc); | |
| 271 Parser p(sc->module, (unsigned char *)se->string, se->len, 0); | |
| 272 p.loc = loc; | |
| 273 p.nextToken(); | |
| 274 | |
| 336 | 275 Statements *a = new Statements(); |
| 159 | 276 while (p.token.value != TOKeof) |
| 277 { | |
| 278 Statement *s = p.parseStatement(PSsemi | PScurlyscope); | |
| 336 | 279 a->push(s); |
| 159 | 280 } |
| 336 | 281 return a; |
| 282 } | |
| 283 | |
| 284 Statement *CompileStatement::semantic(Scope *sc) | |
| 285 { | |
| 286 //printf("CompileStatement::semantic() %s\n", exp->toChars()); | |
| 287 Statements *a = flatten(sc); | |
| 288 if (!a) | |
| 289 return NULL; | |
| 290 Statement *s = new CompoundStatement(loc, a); | |
| 159 | 291 return s->semantic(sc); |
| 292 } | |
| 293 | |
| 294 | |
| 295 /******************************** DeclarationStatement ***************************/ | |
| 296 | |
| 297 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration) | |
| 298 : ExpStatement(loc, new DeclarationExp(loc, declaration)) | |
| 299 { | |
| 300 } | |
| 301 | |
| 302 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp) | |
| 303 : ExpStatement(loc, exp) | |
| 304 { | |
| 305 } | |
| 306 | |
| 307 Statement *DeclarationStatement::syntaxCopy() | |
| 308 { | |
| 309 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy()); | |
| 310 return ds; | |
| 311 } | |
| 312 | |
| 313 void DeclarationStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 314 { | |
| 315 //printf("DeclarationStatement::scopeCode()\n"); | |
| 316 //print(); | |
| 317 | |
| 318 *sentry = NULL; | |
| 319 *sexception = NULL; | |
| 320 *sfinally = NULL; | |
| 321 | |
| 322 if (exp) | |
| 323 { | |
| 324 if (exp->op == TOKdeclaration) | |
| 325 { | |
| 326 DeclarationExp *de = (DeclarationExp *)(exp); | |
| 327 VarDeclaration *v = de->declaration->isVarDeclaration(); | |
| 328 if (v) | |
| 329 { Expression *e; | |
| 330 | |
| 331 e = v->callAutoDtor(); | |
| 332 if (e) | |
| 333 { | |
| 334 //printf("dtor is: "); e->print(); | |
| 335 *sfinally = new ExpStatement(loc, e); | |
| 336 } | |
| 337 } | |
| 338 } | |
| 339 } | |
| 340 } | |
| 341 | |
| 342 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 343 { | |
| 344 exp->toCBuffer(buf, hgs); | |
| 345 } | |
| 346 | |
| 347 | |
| 348 /******************************** CompoundStatement ***************************/ | |
| 349 | |
| 350 CompoundStatement::CompoundStatement(Loc loc, Statements *s) | |
| 351 : Statement(loc) | |
| 352 { | |
| 353 statements = s; | |
| 354 } | |
| 355 | |
| 356 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2) | |
| 357 : Statement(loc) | |
| 358 { | |
| 359 statements = new Statements(); | |
| 360 statements->reserve(2); | |
| 361 statements->push(s1); | |
| 362 statements->push(s2); | |
| 363 } | |
| 364 | |
| 365 Statement *CompoundStatement::syntaxCopy() | |
| 366 { | |
| 367 Statements *a = new Statements(); | |
| 368 a->setDim(statements->dim); | |
| 369 for (size_t i = 0; i < statements->dim; i++) | |
| 370 { Statement *s = (Statement *)statements->data[i]; | |
| 371 if (s) | |
| 372 s = s->syntaxCopy(); | |
| 373 a->data[i] = s; | |
| 374 } | |
| 375 CompoundStatement *cs = new CompoundStatement(loc, a); | |
| 376 return cs; | |
| 377 } | |
| 378 | |
| 379 | |
| 380 Statement *CompoundStatement::semantic(Scope *sc) | |
| 381 { Statement *s; | |
| 382 | |
| 383 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 384 | |
| 385 for (size_t i = 0; i < statements->dim; ) | |
| 386 { | |
| 387 s = (Statement *) statements->data[i]; | |
| 388 if (s) | |
| 389 { Statements *a = s->flatten(sc); | |
| 390 | |
| 391 if (a) | |
| 392 { | |
| 393 statements->remove(i); | |
| 394 statements->insert(i, a); | |
| 395 continue; | |
| 396 } | |
| 397 s = s->semantic(sc); | |
| 398 statements->data[i] = s; | |
| 399 if (s) | |
| 400 { | |
| 401 Statement *sentry; | |
| 402 Statement *sexception; | |
| 403 Statement *sfinally; | |
| 404 | |
| 405 s->scopeCode(&sentry, &sexception, &sfinally); | |
| 406 if (sentry) | |
| 407 { | |
| 408 sentry = sentry->semantic(sc); | |
| 409 statements->data[i] = sentry; | |
| 410 } | |
| 411 if (sexception) | |
| 412 { | |
| 413 if (i + 1 == statements->dim && !sfinally) | |
| 414 { | |
| 415 #if 1 | |
| 416 sexception = sexception->semantic(sc); | |
| 417 #else | |
| 418 statements->push(sexception); | |
| 419 if (sfinally) | |
| 420 // Assume sexception does not throw | |
| 421 statements->push(sfinally); | |
| 422 #endif | |
| 423 } | |
| 424 else | |
| 425 { | |
| 426 /* Rewrite: | |
| 427 * s; s1; s2; | |
| 428 * As: | |
| 429 * s; | |
| 430 * try { s1; s2; } | |
| 431 * catch (Object __o) | |
| 432 * { sexception; throw __o; } | |
| 433 */ | |
| 434 Statement *body; | |
| 435 Statements *a = new Statements(); | |
| 436 | |
| 437 for (int j = i + 1; j < statements->dim; j++) | |
| 438 { | |
| 439 a->push(statements->data[j]); | |
| 440 } | |
| 441 body = new CompoundStatement(0, a); | |
| 442 body = new ScopeStatement(0, body); | |
| 443 | |
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444 Identifier *id = Lexer::uniqueId("__o"); |
| 159 | 445 |
| 446 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id)); | |
| 447 handler = new CompoundStatement(0, sexception, handler); | |
| 448 | |
| 449 Array *catches = new Array(); | |
| 450 Catch *ctch = new Catch(0, NULL, id, handler); | |
| 451 catches->push(ctch); | |
| 452 s = new TryCatchStatement(0, body, catches); | |
| 453 | |
| 454 if (sfinally) | |
| 455 s = new TryFinallyStatement(0, s, sfinally); | |
| 456 s = s->semantic(sc); | |
| 457 statements->setDim(i + 1); | |
| 458 statements->push(s); | |
| 459 break; | |
| 460 } | |
| 461 } | |
| 462 else if (sfinally) | |
| 463 { | |
| 464 if (0 && i + 1 == statements->dim) | |
| 465 { | |
| 466 statements->push(sfinally); | |
| 467 } | |
| 468 else | |
| 469 { | |
| 470 /* Rewrite: | |
| 471 * s; s1; s2; | |
| 472 * As: | |
| 473 * s; try { s1; s2; } finally { sfinally; } | |
| 474 */ | |
| 475 Statement *body; | |
| 476 Statements *a = new Statements(); | |
| 477 | |
| 478 for (int j = i + 1; j < statements->dim; j++) | |
| 479 { | |
| 480 a->push(statements->data[j]); | |
| 481 } | |
| 482 body = new CompoundStatement(0, a); | |
| 483 s = new TryFinallyStatement(0, body, sfinally); | |
| 484 s = s->semantic(sc); | |
| 485 statements->setDim(i + 1); | |
| 486 statements->push(s); | |
| 487 break; | |
| 488 } | |
| 489 } | |
| 490 } | |
| 491 } | |
| 492 i++; | |
| 493 } | |
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494 if (statements->dim == 1 && !isAsmBlockStatement()) |
| 336 | 495 { |
| 496 return (Statement *)statements->data[0]; | |
| 497 } | |
| 159 | 498 return this; |
| 499 } | |
| 500 | |
| 501 Statements *CompoundStatement::flatten(Scope *sc) | |
| 502 { | |
| 503 return statements; | |
| 504 } | |
| 505 | |
| 506 ReturnStatement *CompoundStatement::isReturnStatement() | |
| 336 | 507 { |
| 159 | 508 ReturnStatement *rs = NULL; |
| 509 | |
| 336 | 510 for (int i = 0; i < statements->dim; i++) |
| 511 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 512 if (s) |
| 513 { | |
| 514 rs = s->isReturnStatement(); | |
| 515 if (rs) | |
| 516 break; | |
| 517 } | |
| 518 } | |
| 519 return rs; | |
| 520 } | |
| 521 | |
| 522 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 336 | 523 { |
| 524 for (int i = 0; i < statements->dim; i++) | |
| 525 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 526 if (s) |
| 527 s->toCBuffer(buf, hgs); | |
| 528 } | |
| 529 } | |
| 530 | |
| 531 int CompoundStatement::usesEH() | |
| 532 { | |
| 533 for (int i = 0; i < statements->dim; i++) | |
| 336 | 534 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 535 if (s && s->usesEH()) |
| 536 return TRUE; | |
| 537 } | |
| 538 return FALSE; | |
| 539 } | |
| 540 | |
| 336 | 541 int CompoundStatement::blockExit() |
| 542 { | |
| 543 //printf("CompoundStatement::blockExit(%p) %d\n", this, statements->dim); | |
| 544 int result = BEfallthru; | |
| 545 for (size_t i = 0; i < statements->dim; i++) | |
| 546 { Statement *s = (Statement *) statements->data[i]; | |
| 547 if (s) | |
| 548 { | |
| 549 //printf("result = x%x\n", result); | |
| 550 //printf("%s\n", s->toChars()); | |
| 551 if (!(result & BEfallthru) && !s->comeFrom()) | |
| 552 { | |
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553 s->warning("statement is not reachable"); |
| 336 | 554 } |
| 555 | |
| 556 result &= ~BEfallthru; | |
| 557 result |= s->blockExit(); | |
| 558 } | |
| 559 } | |
| 560 return result; | |
| 561 } | |
| 562 | |
| 159 | 563 int CompoundStatement::comeFrom() |
| 564 { int comefrom = FALSE; | |
| 565 | |
| 566 //printf("CompoundStatement::comeFrom()\n"); | |
| 567 for (int i = 0; i < statements->dim; i++) | |
| 568 { Statement *s = (Statement *)statements->data[i]; | |
| 569 | |
| 570 if (!s) | |
| 571 continue; | |
| 572 | |
| 573 comefrom |= s->comeFrom(); | |
| 574 } | |
| 575 return comefrom; | |
| 576 } | |
| 577 | |
| 578 | |
| 579 /**************************** UnrolledLoopStatement ***************************/ | |
| 580 | |
| 581 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s) | |
| 582 : Statement(loc) | |
| 583 { | |
| 584 statements = s; | |
| 585 } | |
| 586 | |
| 587 Statement *UnrolledLoopStatement::syntaxCopy() | |
| 588 { | |
| 589 Statements *a = new Statements(); | |
| 590 a->setDim(statements->dim); | |
| 591 for (size_t i = 0; i < statements->dim; i++) | |
| 592 { Statement *s = (Statement *)statements->data[i]; | |
| 593 if (s) | |
| 594 s = s->syntaxCopy(); | |
| 595 a->data[i] = s; | |
| 596 } | |
| 597 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
| 598 return cs; | |
| 599 } | |
| 600 | |
| 601 | |
| 602 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
| 603 { | |
| 604 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 605 | |
| 606 sc->noctor++; | |
| 607 Scope *scd = sc->push(); | |
| 608 scd->sbreak = this; | |
| 609 scd->scontinue = this; | |
| 610 | |
| 611 for (size_t i = 0; i < statements->dim; i++) | |
| 612 { | |
| 613 Statement *s = (Statement *) statements->data[i]; | |
| 614 if (s) | |
| 615 { | |
| 616 s = s->semantic(scd); | |
| 617 statements->data[i] = s; | |
| 618 } | |
| 619 } | |
| 620 | |
| 621 scd->pop(); | |
| 622 sc->noctor--; | |
| 623 return this; | |
| 624 } | |
| 625 | |
| 626 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 627 { | |
| 628 buf->writestring("unrolled {"); | |
| 629 buf->writenl(); | |
| 630 | |
| 631 for (size_t i = 0; i < statements->dim; i++) | |
| 632 { Statement *s; | |
| 633 | |
| 634 s = (Statement *) statements->data[i]; | |
| 635 if (s) | |
| 636 s->toCBuffer(buf, hgs); | |
| 637 } | |
| 638 | |
| 639 buf->writeByte('}'); | |
| 640 buf->writenl(); | |
| 641 } | |
| 642 | |
| 643 int UnrolledLoopStatement::hasBreak() | |
| 644 { | |
| 645 return TRUE; | |
| 646 } | |
| 647 | |
| 648 int UnrolledLoopStatement::hasContinue() | |
| 649 { | |
| 650 return TRUE; | |
| 651 } | |
| 652 | |
| 653 int UnrolledLoopStatement::usesEH() | |
| 654 { | |
| 655 for (size_t i = 0; i < statements->dim; i++) | |
| 336 | 656 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 657 if (s && s->usesEH()) |
| 658 return TRUE; | |
| 659 } | |
| 660 return FALSE; | |
| 661 } | |
| 662 | |
| 336 | 663 int UnrolledLoopStatement::blockExit() |
| 664 { | |
| 665 int result = BEfallthru; | |
| 666 for (size_t i = 0; i < statements->dim; i++) | |
| 667 { Statement *s = (Statement *) statements->data[i]; | |
| 668 if (s) | |
| 669 { | |
| 670 int r = s->blockExit(); | |
| 671 result |= r & ~(BEbreak | BEcontinue); | |
| 672 } | |
| 673 } | |
| 674 return result; | |
| 675 } | |
| 676 | |
| 159 | 677 int UnrolledLoopStatement::comeFrom() |
| 678 { int comefrom = FALSE; | |
| 679 | |
| 680 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
| 681 for (size_t i = 0; i < statements->dim; i++) | |
| 682 { Statement *s = (Statement *)statements->data[i]; | |
| 683 | |
| 684 if (!s) | |
| 685 continue; | |
| 686 | |
| 687 comefrom |= s->comeFrom(); | |
| 688 } | |
| 689 return comefrom; | |
| 690 } | |
| 691 | |
| 692 | |
| 693 /******************************** ScopeStatement ***************************/ | |
| 694 | |
| 695 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
| 696 : Statement(loc) | |
| 697 { | |
| 698 this->statement = s; | |
| 699 } | |
| 700 | |
| 701 Statement *ScopeStatement::syntaxCopy() | |
| 702 { | |
| 703 Statement *s; | |
| 704 | |
| 705 s = statement ? statement->syntaxCopy() : NULL; | |
| 706 s = new ScopeStatement(loc, s); | |
| 707 return s; | |
| 708 } | |
| 709 | |
| 710 | |
| 711 Statement *ScopeStatement::semantic(Scope *sc) | |
| 712 { ScopeDsymbol *sym; | |
| 713 | |
| 714 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
| 715 if (statement) | |
| 716 { Statements *a; | |
| 717 | |
| 718 sym = new ScopeDsymbol(); | |
| 719 sym->parent = sc->scopesym; | |
| 720 sc = sc->push(sym); | |
| 721 | |
| 722 a = statement->flatten(sc); | |
| 723 if (a) | |
| 724 { | |
| 725 statement = new CompoundStatement(loc, a); | |
| 726 } | |
| 727 | |
| 728 statement = statement->semantic(sc); | |
| 729 if (statement) | |
| 730 { | |
| 731 Statement *sentry; | |
| 732 Statement *sexception; | |
| 733 Statement *sfinally; | |
| 734 | |
| 735 statement->scopeCode(&sentry, &sexception, &sfinally); | |
| 736 if (sfinally) | |
| 737 { | |
| 738 //printf("adding sfinally\n"); | |
| 739 statement = new CompoundStatement(loc, statement, sfinally); | |
| 740 } | |
| 741 } | |
| 742 | |
| 743 sc->pop(); | |
| 744 } | |
| 745 return this; | |
| 746 } | |
| 747 | |
| 748 int ScopeStatement::hasBreak() | |
| 749 { | |
| 750 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
| 751 return statement ? statement->hasBreak() : FALSE; | |
| 752 } | |
| 753 | |
| 754 int ScopeStatement::hasContinue() | |
| 755 { | |
| 756 return statement ? statement->hasContinue() : FALSE; | |
| 757 } | |
| 758 | |
| 759 int ScopeStatement::usesEH() | |
| 760 { | |
| 761 return statement ? statement->usesEH() : FALSE; | |
| 762 } | |
| 763 | |
| 336 | 764 int ScopeStatement::blockExit() |
| 765 { | |
| 766 //printf("ScopeStatement::blockExit(%p)\n", statement); | |
| 767 return statement ? statement->blockExit() : BEfallthru; | |
| 768 } | |
| 769 | |
| 159 | 770 int ScopeStatement::comeFrom() |
| 771 { | |
| 772 //printf("ScopeStatement::comeFrom()\n"); | |
| 773 return statement ? statement->comeFrom() : FALSE; | |
| 774 } | |
| 775 | |
| 776 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 777 { | |
| 778 buf->writeByte('{'); | |
| 779 buf->writenl(); | |
| 780 | |
| 781 if (statement) | |
| 782 statement->toCBuffer(buf, hgs); | |
| 783 | |
| 784 buf->writeByte('}'); | |
| 785 buf->writenl(); | |
| 786 } | |
| 787 | |
| 788 /******************************** WhileStatement ***************************/ | |
| 789 | |
| 790 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
| 791 : Statement(loc) | |
| 792 { | |
| 793 condition = c; | |
| 794 body = b; | |
| 795 } | |
| 796 | |
| 797 Statement *WhileStatement::syntaxCopy() | |
| 798 { | |
| 799 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 800 return s; | |
| 801 } | |
| 802 | |
| 803 | |
| 804 Statement *WhileStatement::semantic(Scope *sc) | |
| 805 { | |
| 806 #if 0 | |
| 807 if (condition->op == TOKmatch) | |
| 808 { | |
| 809 /* Rewrite while (condition) body as: | |
| 810 * if (condition) | |
| 811 * do | |
| 812 * body | |
| 813 * while ((_match = _match.opNext), _match); | |
| 814 */ | |
| 815 | |
| 816 Expression *ew = new IdentifierExp(0, Id::_match); | |
| 817 ew = new DotIdExp(0, ew, Id::next); | |
| 818 ew = new AssignExp(0, new IdentifierExp(0, Id::_match), ew); | |
| 819 ////ew = new EqualExp(TOKnotequal, 0, ew, new NullExp(0)); | |
| 820 Expression *ev = new IdentifierExp(0, Id::_match); | |
| 821 //ev = new CastExp(0, ev, Type::tvoidptr); | |
| 822 ew = new CommaExp(0, ew, ev); | |
| 823 Statement *sw = new DoStatement(loc, body, ew); | |
| 824 Statement *si = new IfStatement(loc, condition, sw, NULL); | |
| 825 return si->semantic(sc); | |
| 826 } | |
| 827 #endif | |
| 828 | |
| 829 condition = condition->semantic(sc); | |
| 830 condition = resolveProperties(sc, condition); | |
| 831 condition = condition->optimize(WANTvalue); | |
| 832 condition = condition->checkToBoolean(); | |
| 833 | |
| 834 sc->noctor++; | |
| 835 | |
| 836 Scope *scd = sc->push(); | |
| 837 scd->sbreak = this; | |
| 838 scd->scontinue = this; | |
| 839 if (body) | |
| 840 body = body->semantic(scd); | |
| 841 scd->pop(); | |
| 842 | |
| 843 sc->noctor--; | |
| 844 | |
| 845 return this; | |
| 846 } | |
| 847 | |
| 848 int WhileStatement::hasBreak() | |
| 849 { | |
| 850 return TRUE; | |
| 851 } | |
| 852 | |
| 853 int WhileStatement::hasContinue() | |
| 854 { | |
| 855 return TRUE; | |
| 856 } | |
| 857 | |
| 858 int WhileStatement::usesEH() | |
| 859 { | |
| 860 return body ? body->usesEH() : 0; | |
| 861 } | |
| 862 | |
| 336 | 863 int WhileStatement::blockExit() |
| 864 { | |
| 865 //printf("WhileStatement::blockExit(%p)\n", this); | |
| 866 | |
| 867 int result = BEnone; | |
| 868 if (condition->canThrow()) | |
| 869 result |= BEthrow; | |
| 870 if (condition->isBool(TRUE)) | |
| 871 { | |
| 872 if (body) | |
| 873 { result |= body->blockExit(); | |
| 874 if (result & BEbreak) | |
| 875 result |= BEfallthru; | |
| 876 } | |
| 877 } | |
| 878 else if (condition->isBool(FALSE)) | |
| 879 { | |
| 880 result |= BEfallthru; | |
| 881 } | |
| 882 else | |
| 883 { | |
| 884 if (body) | |
| 885 result |= body->blockExit(); | |
| 886 result |= BEfallthru; | |
| 887 } | |
| 888 result &= ~(BEbreak | BEcontinue); | |
| 889 return result; | |
| 890 } | |
| 891 | |
| 159 | 892 int WhileStatement::comeFrom() |
| 893 { | |
| 894 if (body) | |
| 895 return body->comeFrom(); | |
| 896 return FALSE; | |
| 897 } | |
| 898 | |
| 899 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 900 { | |
| 901 buf->writestring("while ("); | |
| 902 condition->toCBuffer(buf, hgs); | |
| 903 buf->writebyte(')'); | |
| 904 buf->writenl(); | |
| 905 if (body) | |
| 906 body->toCBuffer(buf, hgs); | |
| 907 } | |
| 908 | |
| 909 /******************************** DoStatement ***************************/ | |
| 910 | |
| 911 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
| 912 : Statement(loc) | |
| 913 { | |
| 914 body = b; | |
| 915 condition = c; | |
| 916 } | |
| 917 | |
| 918 Statement *DoStatement::syntaxCopy() | |
| 919 { | |
| 920 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
| 921 return s; | |
| 922 } | |
| 923 | |
| 924 | |
| 925 Statement *DoStatement::semantic(Scope *sc) | |
| 926 { | |
| 927 sc->noctor++; | |
| 928 if (body) | |
| 929 body = body->semanticScope(sc, this, this); | |
| 930 sc->noctor--; | |
| 931 condition = condition->semantic(sc); | |
| 932 condition = resolveProperties(sc, condition); | |
| 933 condition = condition->optimize(WANTvalue); | |
| 934 | |
| 935 condition = condition->checkToBoolean(); | |
| 936 | |
| 937 return this; | |
| 938 } | |
| 939 | |
| 940 int DoStatement::hasBreak() | |
| 941 { | |
| 942 return TRUE; | |
| 943 } | |
| 944 | |
| 945 int DoStatement::hasContinue() | |
| 946 { | |
| 947 return TRUE; | |
| 948 } | |
| 949 | |
| 950 int DoStatement::usesEH() | |
| 951 { | |
| 952 return body ? body->usesEH() : 0; | |
| 953 } | |
| 954 | |
| 336 | 955 int DoStatement::blockExit() |
| 956 { int result; | |
| 957 | |
| 958 if (body) | |
| 959 { result = body->blockExit(); | |
| 960 if (result == BEbreak) | |
| 961 return BEfallthru; | |
| 962 if (result & BEcontinue) | |
| 963 result |= BEfallthru; | |
| 964 } | |
| 965 else | |
| 966 result = BEfallthru; | |
| 967 if (result & BEfallthru) | |
| 968 { if (condition->canThrow()) | |
| 969 result |= BEthrow; | |
| 970 if (!(result & BEbreak) && condition->isBool(TRUE)) | |
| 971 result &= ~BEfallthru; | |
| 972 } | |
| 973 result &= ~(BEbreak | BEcontinue); | |
| 974 return result; | |
| 975 } | |
| 976 | |
| 159 | 977 int DoStatement::comeFrom() |
| 978 { | |
| 979 if (body) | |
| 980 return body->comeFrom(); | |
| 981 return FALSE; | |
| 982 } | |
| 983 | |
| 984 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 985 { | |
| 986 buf->writestring("do"); | |
| 987 buf->writenl(); | |
| 988 if (body) | |
| 989 body->toCBuffer(buf, hgs); | |
| 990 buf->writestring("while ("); | |
| 991 condition->toCBuffer(buf, hgs); | |
| 992 buf->writebyte(')'); | |
| 993 } | |
| 994 | |
| 995 /******************************** ForStatement ***************************/ | |
| 996 | |
| 997 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
| 998 : Statement(loc) | |
| 999 { | |
| 1000 this->init = init; | |
| 1001 this->condition = condition; | |
| 1002 this->increment = increment; | |
| 1003 this->body = body; | |
| 1004 } | |
| 1005 | |
| 1006 Statement *ForStatement::syntaxCopy() | |
| 1007 { | |
| 1008 Statement *i = NULL; | |
| 1009 if (init) | |
| 1010 i = init->syntaxCopy(); | |
| 1011 Expression *c = NULL; | |
| 1012 if (condition) | |
| 1013 c = condition->syntaxCopy(); | |
| 1014 Expression *inc = NULL; | |
| 1015 if (increment) | |
| 1016 inc = increment->syntaxCopy(); | |
| 1017 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
| 1018 return s; | |
| 1019 } | |
| 1020 | |
| 1021 Statement *ForStatement::semantic(Scope *sc) | |
| 1022 { | |
| 1023 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1024 sym->parent = sc->scopesym; | |
| 1025 sc = sc->push(sym); | |
| 1026 if (init) | |
| 1027 init = init->semantic(sc); | |
|
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|
1028 #if 0 |
| 159 | 1029 if (!condition) |
| 1030 // Use a default value | |
| 1031 condition = new IntegerExp(loc, 1, Type::tboolean); | |
|
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|
1032 #endif |
| 159 | 1033 sc->noctor++; |
|
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|
1034 if (condition) |
|
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|
1035 { |
|
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|
1036 condition = condition->semantic(sc); |
|
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|
1037 condition = resolveProperties(sc, condition); |
|
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1038 condition = condition->optimize(WANTvalue); |
|
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|
1039 condition = condition->checkToBoolean(); |
|
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|
1040 } |
| 159 | 1041 if (increment) |
|
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1042 { increment = increment->semantic(sc); |
|
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|
1043 increment = resolveProperties(sc, increment); |
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|
1044 } |
| 159 | 1045 |
| 1046 sc->sbreak = this; | |
| 1047 sc->scontinue = this; | |
| 1048 body = body->semantic(sc); | |
| 1049 sc->noctor--; | |
| 1050 | |
| 1051 sc->pop(); | |
| 1052 return this; | |
| 1053 } | |
| 1054 | |
| 1055 void ForStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 1056 { | |
| 1057 //printf("ForStatement::scopeCode()\n"); | |
| 1058 //print(); | |
| 1059 if (init) | |
| 1060 init->scopeCode(sentry, sexception, sfinally); | |
| 1061 else | |
| 1062 Statement::scopeCode(sentry, sexception, sfinally); | |
| 1063 } | |
| 1064 | |
| 1065 int ForStatement::hasBreak() | |
| 1066 { | |
| 1067 //printf("ForStatement::hasBreak()\n"); | |
| 1068 return TRUE; | |
| 1069 } | |
| 1070 | |
| 1071 int ForStatement::hasContinue() | |
| 1072 { | |
| 1073 return TRUE; | |
| 1074 } | |
| 1075 | |
| 1076 int ForStatement::usesEH() | |
| 1077 { | |
| 1078 return (init && init->usesEH()) || body->usesEH(); | |
| 1079 } | |
| 1080 | |
| 336 | 1081 int ForStatement::blockExit() |
| 1082 { int result = BEfallthru; | |
| 1083 | |
| 1084 if (init) | |
| 1085 { result = init->blockExit(); | |
| 1086 if (!(result & BEfallthru)) | |
| 1087 return result; | |
| 1088 } | |
| 1089 if (condition) | |
| 1090 { if (condition->canThrow()) | |
| 1091 result |= BEthrow; | |
| 1092 } | |
| 1093 else | |
| 1094 result &= ~BEfallthru; // the body must do the exiting | |
| 1095 if (body) | |
| 1096 { int r = body->blockExit(); | |
|
1103
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1097 if (r & (BEbreak | BEgoto)) |
| 336 | 1098 result |= BEfallthru; |
|
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parents:
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|
1099 result |= r & ~(BEfallthru | BEbreak | BEcontinue); |
| 336 | 1100 } |
| 1101 if (increment && increment->canThrow()) | |
| 1102 result |= BEthrow; | |
| 1103 return result; | |
| 1104 } | |
| 1105 | |
| 159 | 1106 int ForStatement::comeFrom() |
| 1107 { | |
| 1108 //printf("ForStatement::comeFrom()\n"); | |
| 1109 if (body) | |
| 1110 { int result = body->comeFrom(); | |
| 1111 //printf("result = %d\n", result); | |
| 1112 return result; | |
| 1113 } | |
| 1114 return FALSE; | |
| 1115 } | |
| 1116 | |
| 1117 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1118 { | |
| 1119 buf->writestring("for ("); | |
| 1120 if (init) | |
| 1121 { | |
| 1122 hgs->FLinit.init++; | |
| 1123 hgs->FLinit.decl = 0; | |
| 1124 init->toCBuffer(buf, hgs); | |
| 1125 if (hgs->FLinit.decl > 0) | |
| 1126 buf->writebyte(';'); | |
| 1127 hgs->FLinit.decl = 0; | |
| 1128 hgs->FLinit.init--; | |
| 1129 } | |
| 1130 else | |
| 1131 buf->writebyte(';'); | |
| 1132 if (condition) | |
| 1133 { buf->writebyte(' '); | |
| 1134 condition->toCBuffer(buf, hgs); | |
| 1135 } | |
| 1136 buf->writebyte(';'); | |
| 1137 if (increment) | |
| 1138 { buf->writebyte(' '); | |
| 1139 increment->toCBuffer(buf, hgs); | |
| 1140 } | |
| 1141 buf->writebyte(')'); | |
| 1142 buf->writenl(); | |
| 1143 buf->writebyte('{'); | |
| 1144 buf->writenl(); | |
| 1145 body->toCBuffer(buf, hgs); | |
| 1146 buf->writebyte('}'); | |
| 1147 buf->writenl(); | |
| 1148 } | |
| 1149 | |
| 1150 /******************************** ForeachStatement ***************************/ | |
| 1151 | |
| 1152 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Arguments *arguments, | |
| 1153 Expression *aggr, Statement *body) | |
| 1154 : Statement(loc) | |
| 1155 { | |
| 1156 this->op = op; | |
| 1157 this->arguments = arguments; | |
| 1158 this->aggr = aggr; | |
| 1159 this->body = body; | |
| 1160 | |
| 1161 this->key = NULL; | |
| 1162 this->value = NULL; | |
| 1163 | |
| 1164 this->func = NULL; | |
| 1165 } | |
| 1166 | |
| 1167 Statement *ForeachStatement::syntaxCopy() | |
| 1168 { | |
| 1169 Arguments *args = Argument::arraySyntaxCopy(arguments); | |
| 1170 Expression *exp = aggr->syntaxCopy(); | |
| 1171 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, | |
| 1172 body ? body->syntaxCopy() : NULL); | |
| 1173 return s; | |
| 1174 } | |
| 1175 | |
| 1176 Statement *ForeachStatement::semantic(Scope *sc) | |
| 1177 { | |
| 1178 //printf("ForeachStatement::semantic() %p\n", this); | |
| 1179 ScopeDsymbol *sym; | |
| 1180 Statement *s = this; | |
|
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parents:
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diff
changeset
|
1181 size_t dim = arguments->dim; |
| 159 | 1182 TypeAArray *taa = NULL; |
| 1183 | |
| 1184 Type *tn = NULL; | |
| 1185 Type *tnv = NULL; | |
| 1186 | |
| 1187 func = sc->func; | |
| 1188 if (func->fes) | |
| 1189 func = func->fes->func; | |
| 1190 | |
| 1191 aggr = aggr->semantic(sc); | |
| 1192 aggr = resolveProperties(sc, aggr); | |
|
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Merged DMD 1.037 frontend
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diff
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|
1193 aggr = aggr->optimize(WANTvalue); |
| 159 | 1194 if (!aggr->type) |
| 1195 { | |
| 1196 error("invalid foreach aggregate %s", aggr->toChars()); | |
| 1197 return this; | |
| 1198 } | |
| 1199 | |
| 1200 inferApplyArgTypes(op, arguments, aggr); | |
| 1201 | |
| 1202 /* Check for inference errors | |
| 1203 */ | |
| 1204 if (dim != arguments->dim) | |
| 1205 { | |
| 1206 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
| 1207 error("cannot uniquely infer foreach argument types"); | |
| 1208 return this; | |
| 1209 } | |
| 1210 | |
| 1211 Type *tab = aggr->type->toBasetype(); | |
| 1212 | |
| 1213 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
| 1214 { | |
| 1215 if (dim < 1 || dim > 2) | |
| 1216 { | |
| 1217 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
| 1218 return s; | |
| 1219 } | |
| 1220 | |
| 1221 TypeTuple *tuple = (TypeTuple *)tab; | |
| 1222 Statements *statements = new Statements(); | |
| 1223 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
| 1224 size_t n; | |
| 1225 TupleExp *te = NULL; | |
| 1226 if (aggr->op == TOKtuple) // expression tuple | |
| 1227 { te = (TupleExp *)aggr; | |
| 1228 n = te->exps->dim; | |
| 1229 } | |
| 1230 else if (aggr->op == TOKtype) // type tuple | |
| 1231 { | |
| 1232 n = Argument::dim(tuple->arguments); | |
| 1233 } | |
| 1234 else | |
| 1235 assert(0); | |
| 1236 for (size_t j = 0; j < n; j++) | |
| 1237 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
| 1238 Expression *e; | |
| 1239 Type *t; | |
| 1240 if (te) | |
| 1241 e = (Expression *)te->exps->data[k]; | |
| 1242 else | |
| 1243 t = Argument::getNth(tuple->arguments, k)->type; | |
| 1244 Argument *arg = (Argument *)arguments->data[0]; | |
| 1245 Statements *st = new Statements(); | |
| 1246 | |
| 1247 if (dim == 2) | |
| 1248 { // Declare key | |
| 1249 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1250 error("no storage class for key %s", arg->ident->toChars()); | |
| 1251 TY keyty = arg->type->ty; | |
|
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|
1252 if (global.params.is64bit) |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
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diff
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|
1253 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
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diff
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|
1254 if (keyty != Tint32 && keyty != Tuns32 && keyty != Tint64 && keyty != Tuns64) |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
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|
1255 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1256 error("foreach: key type must be int, uint, long or ulong, not %s", key->type->toChars()); |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1257 } |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
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diff
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|
1258 } |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
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diff
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|
1259 else if (keyty != Tint32 && keyty != Tuns32) |
|
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|
1260 { |
|
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lindquist
parents:
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diff
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|
1261 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
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|
1262 } |
| 159 | 1263 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); |
| 1264 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1265 var->storage_class |= STCconst; | |
| 1266 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1267 st->push(new ExpStatement(loc, de)); | |
| 1268 arg = (Argument *)arguments->data[1]; // value | |
| 1269 } | |
| 1270 // Declare value | |
| 1271 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1272 error("no storage class for value %s", arg->ident->toChars()); | |
| 1273 Dsymbol *var; | |
| 1274 if (te) | |
| 1275 { | |
| 1276 if (e->type->toBasetype()->ty == Tfunction && | |
| 1277 e->op == TOKvar) | |
| 1278 { VarExp *ve = (VarExp *)e; | |
| 1279 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
| 1280 } | |
| 1281 else | |
| 1282 { | |
| 1283 arg->type = e->type; | |
| 1284 Initializer *ie = new ExpInitializer(0, e); | |
| 1285 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1286 if (e->isConst()) | |
| 1287 v->storage_class |= STCconst; | |
| 1288 var = v; | |
| 1289 } | |
| 1290 } | |
| 1291 else | |
| 1292 { | |
| 1293 var = new AliasDeclaration(loc, arg->ident, t); | |
| 1294 } | |
| 1295 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1296 st->push(new ExpStatement(loc, de)); | |
| 1297 | |
| 1298 st->push(body->syntaxCopy()); | |
| 1299 s = new CompoundStatement(loc, st); | |
| 1300 s = new ScopeStatement(loc, s); | |
| 1301 statements->push(s); | |
| 1302 } | |
| 1303 | |
| 1304 s = new UnrolledLoopStatement(loc, statements); | |
| 1305 s = s->semantic(sc); | |
| 1306 return s; | |
| 1307 } | |
| 1308 | |
|
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Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1309 for (size_t i = 0; i < dim; i++) |
| 159 | 1310 { Argument *arg = (Argument *)arguments->data[i]; |
| 1311 if (!arg->type) | |
| 1312 { | |
| 1313 error("cannot infer type for %s", arg->ident->toChars()); | |
| 1314 return this; | |
| 1315 } | |
| 1316 } | |
| 1317 | |
| 1318 sym = new ScopeDsymbol(); | |
| 1319 sym->parent = sc->scopesym; | |
| 1320 sc = sc->push(sym); | |
| 1321 | |
| 1322 sc->noctor++; | |
| 1323 | |
| 1324 switch (tab->ty) | |
| 1325 { | |
| 1326 case Tarray: | |
| 1327 case Tsarray: | |
| 1328 if (dim < 1 || dim > 2) | |
| 1329 { | |
| 1330 error("only one or two arguments for array foreach"); | |
| 1331 break; | |
| 1332 } | |
| 1333 | |
| 1334 /* Look for special case of parsing char types out of char type | |
| 1335 * array. | |
| 1336 */ | |
| 1337 tn = tab->nextOf()->toBasetype(); | |
| 1338 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) | |
| 1339 { Argument *arg; | |
| 1340 | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1341 int i = (dim == 1) ? 0 : 1; // index of value |
| 159 | 1342 arg = (Argument *)arguments->data[i]; |
| 1343 arg->type = arg->type->semantic(loc, sc); | |
| 1344 tnv = arg->type->toBasetype(); | |
| 1345 if (tnv->ty != tn->ty && | |
| 1346 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
| 1347 { | |
| 1348 if (arg->storageClass & STCref) | |
| 1349 error("foreach: value of UTF conversion cannot be ref"); | |
| 1350 if (dim == 2) | |
| 1351 { arg = (Argument *)arguments->data[0]; | |
| 1352 if (arg->storageClass & STCref) | |
| 1353 error("foreach: key cannot be ref"); | |
| 1354 } | |
| 1355 goto Lapply; | |
| 1356 } | |
| 1357 } | |
| 1358 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1359 for (size_t i = 0; i < dim; i++) |
| 159 | 1360 { // Declare args |
| 1361 Argument *arg = (Argument *)arguments->data[i]; | |
| 1362 VarDeclaration *var; | |
| 1363 | |
| 1364 var = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
| 1365 var->storage_class |= STCforeach; | |
| 1366 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
| 1367 #if 1 | |
| 1368 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1369 de->semantic(sc); | |
| 1370 #else | |
| 1371 var->semantic(sc); | |
| 1372 if (!sc->insert(var)) | |
| 1373 error("%s already defined", var->ident->toChars()); | |
| 1374 #endif | |
| 1375 if (dim == 2 && i == 0) | |
| 1376 key = var; | |
| 1377 else | |
| 1378 value = var; | |
| 1379 } | |
| 1380 | |
| 1381 sc->sbreak = this; | |
| 1382 sc->scontinue = this; | |
| 1383 body = body->semantic(sc); | |
| 1384 | |
| 1385 if (!value->type->equals(tab->next)) | |
| 1386 { | |
| 1387 if (aggr->op == TOKstring) | |
| 1388 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
| 1389 else | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1390 error("foreach: %s is not an array of %s", |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1391 tab->toChars(), value->type->toChars()); |
| 159 | 1392 } |
| 1393 | |
|
275
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diff
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|
1394 if (key) |
|
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parents:
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diff
changeset
|
1395 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1396 if (global.params.is64bit) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1397 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1398 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
|
1399 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1400 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
|
1401 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1402 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1403 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
|
1404 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1405 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1406 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1407 } |
| 159 | 1408 |
| 1409 if (key && key->storage_class & (STCout | STCref)) | |
| 1410 error("foreach: key cannot be out or ref"); | |
| 1411 break; | |
| 1412 | |
| 1413 case Taarray: | |
| 1414 taa = (TypeAArray *)tab; | |
| 1415 if (dim < 1 || dim > 2) | |
| 1416 { | |
| 1417 error("only one or two arguments for associative array foreach"); | |
| 1418 break; | |
| 1419 } | |
| 1420 if (op == TOKforeach_reverse) | |
| 1421 { | |
| 1422 error("no reverse iteration on associative arrays"); | |
| 1423 } | |
| 1424 goto Lapply; | |
| 1425 | |
| 1426 case Tclass: | |
| 1427 case Tstruct: | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1428 #if DMDV2 |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1429 { /* 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
|
1430 * .empty, .next, .retreat, .head and .rear |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1431 * foreach (e; range) { ... } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1432 * translates to: |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1433 * for (auto __r = range; !__r.empty; __r.next) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1434 * { auto e = __r.head; |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1435 * ... |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1436 * } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1437 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1438 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
|
1439 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1440 AggregateDeclaration *ad = (tab->ty == Tclass) |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1441 ? (AggregateDeclaration *)((TypeClass *)tab)->sym |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1442 : (AggregateDeclaration *)((TypeStruct *)tab)->sym; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1443 Identifier *idhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1444 Identifier *idnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1445 if (op == TOKforeach) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1446 { idhead = Id::Fhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1447 idnext = Id::Fnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1448 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1449 else |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1450 { idhead = Id::Frear; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1451 idnext = Id::Fretreat; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1452 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1453 Dsymbol *shead = search_function(ad, idhead); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1454 if (!shead) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1455 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1456 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1457 /* 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
|
1458 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1459 Identifier *id = Identifier::generateId("__r"); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1460 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
|
1461 r->semantic(sc); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1462 Statement *init = new DeclarationStatement(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1463 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
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|
1464 // !__r.empty |
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1465 Expression *e = new VarExp(loc, r); |
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1466 e = new DotIdExp(loc, e, Id::Fempty); |
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1467 Expression *condition = new NotExp(loc, e); |
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1468 |
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1469 // __r.next |
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1470 e = new VarExp(loc, r); |
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1471 Expression *increment = new DotIdExp(loc, e, idnext); |
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1472 |
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1473 /* Declaration statement for e: |
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1474 * auto e = __r.idhead; |
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1475 */ |
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1476 e = new VarExp(loc, r); |
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1477 Expression *einit = new DotIdExp(loc, e, idhead); |
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1478 einit = einit->semantic(sc); |
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1479 Argument *arg = (Argument *)arguments->data[0]; |
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1480 VarDeclaration *ve = new VarDeclaration(loc, arg->type, arg->ident, new ExpInitializer(loc, einit)); |
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1481 ve->storage_class |= STCforeach; |
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1482 ve->storage_class |= arg->storageClass & (STCin | STCout | STCref | STCconst | STCinvariant); |
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1483 |
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1484 DeclarationExp *de = new DeclarationExp(loc, ve); |
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1485 |
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1486 Statement *body = new CompoundStatement(loc, |
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1487 new DeclarationStatement(loc, de), this->body); |
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1488 |
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1489 s = new ForStatement(loc, init, condition, increment, body); |
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1490 s = s->semantic(sc); |
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1491 break; |
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1492 } |
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1493 #endif |
| 159 | 1494 case Tdelegate: |
| 1495 Lapply: | |
| 1496 { FuncDeclaration *fdapply; | |
| 1497 Arguments *args; | |
| 1498 Expression *ec; | |
| 1499 Expression *e; | |
| 1500 FuncLiteralDeclaration *fld; | |
| 1501 Argument *a; | |
| 1502 Type *t; | |
| 1503 Expression *flde; | |
| 1504 Identifier *id; | |
| 1505 Type *tret; | |
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1506 TypeDelegate* dgty; |
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1507 TypeDelegate* dgty2; |
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1508 TypeDelegate* fldeTy; |
| 159 | 1509 |
| 1510 tret = func->type->nextOf(); | |
| 1511 | |
| 1512 // Need a variable to hold value from any return statements in body. | |
| 1513 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1514 { VarDeclaration *v; | |
| 1515 | |
| 1516 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 1517 v->noauto = 1; | |
| 1518 v->semantic(sc); | |
| 1519 if (!sc->insert(v)) | |
| 1520 assert(0); | |
| 1521 v->parent = sc->func; | |
| 1522 sc->func->vresult = v; | |
| 1523 } | |
| 1524 | |
| 1525 /* Turn body into the function literal: | |
| 1526 * int delegate(ref T arg) { body } | |
| 1527 */ | |
| 1528 args = new Arguments(); | |
|
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1529 for (size_t i = 0; i < dim; i++) |
| 159 | 1530 { Argument *arg = (Argument *)arguments->data[i]; |
| 1531 | |
| 1532 arg->type = arg->type->semantic(loc, sc); | |
| 1533 if (arg->storageClass & STCref) | |
| 1534 id = arg->ident; | |
| 1535 else | |
| 1536 { // Make a copy of the ref argument so it isn't | |
| 1537 // a reference. | |
| 1538 VarDeclaration *v; | |
| 1539 Initializer *ie; | |
|
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1540 |
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1541 id = Lexer::uniqueId("__applyArg", i); |
| 159 | 1542 |
| 1543 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1544 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1545 s = new DeclarationStatement(0, v); | |
| 1546 body = new CompoundStatement(loc, s, body); | |
| 1547 } | |
| 1548 a = new Argument(STCref, arg->type, id, NULL); | |
| 1549 args->push(a); | |
| 1550 } | |
| 1551 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1552 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1553 fld->fbody = body; | |
| 1554 flde = new FuncExp(loc, fld); | |
| 1555 flde = flde->semantic(sc); | |
| 1556 | |
| 1557 // Resolve any forward referenced goto's | |
| 1558 for (int i = 0; i < gotos.dim; i++) | |
| 1559 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1560 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1561 | |
| 1562 if (!gs->label->statement) | |
| 1563 { // 'Promote' it to this scope, and replace with a return | |
| 1564 cases.push(gs); | |
| 1565 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1566 cs->statements->data[0] = (void *)s; | |
| 1567 } | |
| 1568 } | |
| 1569 | |
| 1570 if (tab->ty == Taarray) | |
| 1571 { | |
| 1572 // Check types | |
| 1573 Argument *arg = (Argument *)arguments->data[0]; | |
| 1574 if (dim == 2) | |
| 1575 { | |
| 1576 if (arg->storageClass & STCref) | |
| 1577 error("foreach: index cannot be ref"); | |
| 1578 if (!arg->type->equals(taa->index)) | |
| 1579 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
| 1580 arg = (Argument *)arguments->data[1]; | |
| 1581 } | |
| 1582 if (!arg->type->equals(taa->nextOf())) | |
| 1583 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1584 | |
| 1585 /* Call: | |
| 1586 * _aaApply(aggr, keysize, flde) | |
| 1587 */ | |
|
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1588 //LDC: Build arguments. |
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1589 static FuncDeclaration *aaApply2_fd = NULL; |
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1590 static TypeDelegate* aaApply2_dg; |
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1591 if(!aaApply2_fd) { |
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1592 Arguments* args = new Arguments; |
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1593 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
|
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1594 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
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1595 Arguments* dgargs = new Arguments; |
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1596 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1597 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1598 aaApply2_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1599 args->push(new Argument(STCin, aaApply2_dg, NULL, NULL)); |
|
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1600 aaApply2_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply2"); |
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1601 } |
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1602 static FuncDeclaration *aaApply_fd = NULL; |
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1603 static TypeDelegate* aaApply_dg; |
|
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1604 if(!aaApply_fd) { |
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1605 Arguments* args = new Arguments; |
|
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1606 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
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1607 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
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1608 Arguments* dgargs = new Arguments; |
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1609 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1610 aaApply_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1611 args->push(new Argument(STCin, aaApply_dg, NULL, NULL)); |
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1612 aaApply_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply"); |
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1613 } |
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1614 if (dim == 2) { |
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1615 fdapply = aaApply2_fd; |
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1616 fldeTy = aaApply2_dg; |
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1617 } else { |
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1618 fdapply = aaApply_fd; |
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1619 fldeTy = aaApply_dg; |
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1620 } |
| 159 | 1621 ec = new VarExp(0, fdapply); |
| 1622 Expressions *exps = new Expressions(); | |
| 1623 exps->push(aggr); | |
| 1624 size_t keysize = taa->key->size(); | |
|
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1625 keysize = (keysize + (PTRSIZE-1)) & ~(PTRSIZE-1); |
| 159 | 1626 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); |
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1627 |
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1628 // LDC paint delegate argument to the type runtime expects |
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1629 if (!fldeTy->equals(flde->type)) |
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1630 { |
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1631 flde = new CastExp(loc, flde, flde->type); |
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1632 flde->type = fldeTy; |
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1633 } |
| 159 | 1634 exps->push(flde); |
| 1635 e = new CallExp(loc, ec, exps); | |
| 1636 e->type = Type::tindex; // don't run semantic() on e | |
| 1637 } | |
| 1638 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1639 { | |
| 1640 /* Call: | |
| 1641 * _aApply(aggr, flde) | |
| 1642 */ | |
| 1643 static char fntab[9][3] = | |
| 1644 { "cc","cw","cd", | |
| 1645 "wc","cc","wd", | |
| 1646 "dc","dw","dd" | |
| 1647 }; | |
| 1648 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1649 int flag; | |
| 1650 | |
| 1651 switch (tn->ty) | |
| 1652 { | |
| 1653 case Tchar: flag = 0; break; | |
| 1654 case Twchar: flag = 3; break; | |
| 1655 case Tdchar: flag = 6; break; | |
| 1656 default: assert(0); | |
| 1657 } | |
| 1658 switch (tnv->ty) | |
| 1659 { | |
| 1660 case Tchar: flag += 0; break; | |
| 1661 case Twchar: flag += 1; break; | |
| 1662 case Tdchar: flag += 2; break; | |
| 1663 default: assert(0); | |
| 1664 } | |
| 1665 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
|
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1666 int j = sprintf(fdname, "_aApply%s%.*s%zu", r, 2, fntab[flag], dim); |
| 159 | 1667 assert(j < sizeof(fdname)); |
|
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1668 //LDC: Build arguments. |
|
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1669 Arguments* args = new Arguments; |
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1670 args->push(new Argument(STCin, tn->arrayOf(), NULL, NULL)); |
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1671 if (dim == 2) { |
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1672 Arguments* dgargs = new Arguments; |
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1673 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1674 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1675 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1676 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1677 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1678 } else { |
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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 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1682 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1683 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1684 } |
| 159 | 1685 |
| 1686 ec = new VarExp(0, fdapply); | |
| 1687 Expressions *exps = new Expressions(); | |
| 1688 if (tab->ty == Tsarray) | |
| 1689 aggr = aggr->castTo(sc, tn->arrayOf()); | |
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1690 exps->push(aggr); |
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1691 |
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1692 // LDC paint delegate argument to the type runtime expects |
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1693 if (!dgty->equals(flde->type)) |
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1694 { |
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1695 flde = new CastExp(loc, flde, flde->type); |
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1696 flde->type = dgty; |
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1697 } |
| 159 | 1698 exps->push(flde); |
| 1699 e = new CallExp(loc, ec, exps); | |
| 1700 e->type = Type::tindex; // don't run semantic() on e | |
| 1701 } | |
| 1702 else if (tab->ty == Tdelegate) | |
| 1703 { | |
| 1704 /* Call: | |
| 1705 * aggr(flde) | |
| 1706 */ | |
| 1707 Expressions *exps = new Expressions(); | |
| 1708 exps->push(flde); | |
| 1709 e = new CallExp(loc, aggr, exps); | |
| 1710 e = e->semantic(sc); | |
| 1711 if (e->type != Type::tint32) | |
| 1712 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1713 } | |
| 1714 else | |
| 1715 { | |
| 1716 /* Call: | |
| 1717 * aggr.apply(flde) | |
| 1718 */ | |
| 1719 ec = new DotIdExp(loc, aggr, | |
| 1720 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1721 : Id::apply); | |
| 1722 Expressions *exps = new Expressions(); | |
| 1723 exps->push(flde); | |
| 1724 e = new CallExp(loc, ec, exps); | |
| 1725 e = e->semantic(sc); | |
| 1726 if (e->type != Type::tint32) | |
| 1727 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1728 } | |
| 1729 | |
| 1730 if (!cases.dim) | |
| 1731 // Easy case, a clean exit from the loop | |
| 1732 s = new ExpStatement(loc, e); | |
| 1733 else | |
| 1734 { // Construct a switch statement around the return value | |
| 1735 // of the apply function. | |
| 1736 Statements *a = new Statements(); | |
| 1737 | |
| 1738 // default: break; takes care of cases 0 and 1 | |
| 1739 s = new BreakStatement(0, NULL); | |
| 1740 s = new DefaultStatement(0, s); | |
| 1741 a->push(s); | |
| 1742 | |
| 1743 // cases 2... | |
| 1744 for (int i = 0; i < cases.dim; i++) | |
| 1745 { | |
| 1746 s = (Statement *)cases.data[i]; | |
| 1747 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1748 a->push(s); | |
| 1749 } | |
| 1750 | |
| 1751 s = new CompoundStatement(loc, a); | |
| 1752 s = new SwitchStatement(loc, e, s); | |
| 1753 s = s->semantic(sc); | |
| 1754 } | |
| 1755 break; | |
| 1756 } | |
| 1757 | |
| 1758 default: | |
| 1759 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1760 break; | |
| 1761 } | |
| 1762 sc->noctor--; | |
| 1763 sc->pop(); | |
| 1764 return s; | |
| 1765 } | |
| 1766 | |
| 1767 int ForeachStatement::hasBreak() | |
| 1768 { | |
| 1769 return TRUE; | |
| 1770 } | |
| 1771 | |
| 1772 int ForeachStatement::hasContinue() | |
| 1773 { | |
| 1774 return TRUE; | |
| 1775 } | |
| 1776 | |
| 1777 int ForeachStatement::usesEH() | |
| 1778 { | |
| 1779 return body->usesEH(); | |
| 1780 } | |
| 1781 | |
| 336 | 1782 int ForeachStatement::blockExit() |
| 1783 { int result = BEfallthru; | |
| 1784 | |
| 1785 if (aggr->canThrow()) | |
| 1786 result |= BEthrow; | |
| 1787 | |
| 1788 if (body) | |
| 1789 { | |
| 1790 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 1791 } | |
| 1792 return result; | |
| 1793 } | |
| 1794 | |
| 159 | 1795 int ForeachStatement::comeFrom() |
| 1796 { | |
| 1797 if (body) | |
| 1798 return body->comeFrom(); | |
| 1799 return FALSE; | |
| 1800 } | |
| 1801 | |
| 1802 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1803 { | |
| 1804 buf->writestring(Token::toChars(op)); | |
| 1805 buf->writestring(" ("); | |
| 1806 for (int i = 0; i < arguments->dim; i++) | |
| 1807 { | |
| 1808 Argument *a = (Argument *)arguments->data[i]; | |
| 1809 if (i) | |
| 1810 buf->writestring(", "); | |
| 1811 if (a->storageClass & STCref) | |
| 1812 buf->writestring((global.params.Dversion == 1) | |
| 1813 ? (char*)"inout " : (char*)"ref "); | |
| 1814 if (a->type) | |
| 1815 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1816 else | |
| 1817 buf->writestring(a->ident->toChars()); | |
| 1818 } | |
| 1819 buf->writestring("; "); | |
| 1820 aggr->toCBuffer(buf, hgs); | |
| 1821 buf->writebyte(')'); | |
| 1822 buf->writenl(); | |
| 1823 buf->writebyte('{'); | |
| 1824 buf->writenl(); | |
| 1825 if (body) | |
| 1826 body->toCBuffer(buf, hgs); | |
| 1827 buf->writebyte('}'); | |
| 1828 buf->writenl(); | |
| 1829 } | |
| 1830 | |
| 1831 /******************************** IfStatement ***************************/ | |
| 1832 | |
| 1833 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody) | |
| 1834 : Statement(loc) | |
| 1835 { | |
| 1836 this->arg = arg; | |
| 1837 this->condition = condition; | |
| 1838 this->ifbody = ifbody; | |
| 1839 this->elsebody = elsebody; | |
| 1840 this->match = NULL; | |
| 1841 } | |
| 1842 | |
| 1843 Statement *IfStatement::syntaxCopy() | |
| 1844 { | |
| 1845 Statement *i = NULL; | |
| 1846 if (ifbody) | |
| 1847 i = ifbody->syntaxCopy(); | |
| 1848 | |
| 1849 Statement *e = NULL; | |
| 1850 if (elsebody) | |
| 1851 e = elsebody->syntaxCopy(); | |
| 1852 | |
| 1853 Argument *a = arg ? arg->syntaxCopy() : NULL; | |
| 1854 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); | |
| 1855 return s; | |
| 1856 } | |
| 1857 | |
| 1858 Statement *IfStatement::semantic(Scope *sc) | |
| 1859 { | |
| 1860 condition = condition->semantic(sc); | |
| 1861 condition = resolveProperties(sc, condition); | |
| 1862 condition = condition->checkToBoolean(); | |
| 1863 | |
| 1864 // If we can short-circuit evaluate the if statement, don't do the | |
| 1865 // semantic analysis of the skipped code. | |
| 1866 // This feature allows a limited form of conditional compilation. | |
| 1867 condition = condition->optimize(WANTflags); | |
| 1868 | |
| 1869 // Evaluate at runtime | |
| 1870 unsigned cs0 = sc->callSuper; | |
| 1871 unsigned cs1; | |
| 1872 | |
| 1873 Scope *scd; | |
| 1874 if (arg) | |
| 1875 { /* Declare arg, which we will set to be the | |
| 1876 * result of condition. | |
| 1877 */ | |
| 1878 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1879 sym->parent = sc->scopesym; | |
| 1880 scd = sc->push(sym); | |
| 1881 | |
| 1882 Type *t = arg->type ? arg->type : condition->type; | |
| 1883 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
| 1884 match->noauto = 1; | |
| 1885 match->semantic(scd); | |
| 1886 if (!scd->insert(match)) | |
| 1887 assert(0); | |
| 1888 match->parent = sc->func; | |
| 1889 | |
| 1890 /* Generate: | |
| 1891 * (arg = condition) | |
| 1892 */ | |
| 1893 VarExp *v = new VarExp(0, match); | |
| 1894 condition = new AssignExp(loc, v, condition); | |
| 1895 condition = condition->semantic(scd); | |
| 1896 } | |
| 1897 else | |
| 1898 scd = sc->push(); | |
| 1899 ifbody = ifbody->semantic(scd); | |
| 1900 scd->pop(); | |
| 1901 | |
| 1902 cs1 = sc->callSuper; | |
| 1903 sc->callSuper = cs0; | |
| 1904 if (elsebody) | |
| 1905 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 1906 sc->mergeCallSuper(loc, cs1); | |
| 1907 | |
| 1908 return this; | |
| 1909 } | |
| 1910 | |
| 1911 int IfStatement::usesEH() | |
| 1912 { | |
| 1913 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 1914 } | |
| 1915 | |
| 336 | 1916 int IfStatement::blockExit() |
| 1917 { | |
| 1918 //printf("IfStatement::blockExit(%p)\n", this); | |
| 1919 | |
| 1920 int result = BEnone; | |
| 1921 if (condition->canThrow()) | |
| 1922 result |= BEthrow; | |
| 1923 if (condition->isBool(TRUE)) | |
| 1924 { | |
| 1925 if (ifbody) | |
| 1926 result |= ifbody->blockExit(); | |
| 1927 else | |
| 1928 result |= BEfallthru; | |
| 1929 } | |
| 1930 else if (condition->isBool(FALSE)) | |
| 1931 { | |
| 1932 if (elsebody) | |
| 1933 result |= elsebody->blockExit(); | |
| 1934 else | |
| 1935 result |= BEfallthru; | |
| 1936 } | |
| 1937 else | |
| 1938 { | |
| 1939 if (ifbody) | |
| 1940 result |= ifbody->blockExit(); | |
| 1941 else | |
| 1942 result |= BEfallthru; | |
| 1943 if (elsebody) | |
| 1944 result |= elsebody->blockExit(); | |
| 1945 else | |
| 1946 result |= BEfallthru; | |
| 1947 } | |
| 1948 //printf("IfStatement::blockExit(%p) = x%x\n", this, result); | |
| 1949 return result; | |
| 1950 } | |
| 1951 | |
| 159 | 1952 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 1953 { | |
| 1954 buf->writestring("if ("); | |
| 1955 if (arg) | |
| 1956 { | |
| 1957 if (arg->type) | |
| 1958 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 1959 else | |
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1960 { buf->writestring("auto "); |
| 159 | 1961 buf->writestring(arg->ident->toChars()); |
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1962 } |
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1963 buf->writestring(" = "); |
| 159 | 1964 } |
| 1965 condition->toCBuffer(buf, hgs); | |
| 1966 buf->writebyte(')'); | |
| 1967 buf->writenl(); | |
| 1968 ifbody->toCBuffer(buf, hgs); | |
| 1969 if (elsebody) | |
| 1970 { buf->writestring("else"); | |
| 1971 buf->writenl(); | |
| 1972 elsebody->toCBuffer(buf, hgs); | |
| 1973 } | |
| 1974 } | |
| 1975 | |
| 1976 /******************************** ConditionalStatement ***************************/ | |
| 1977 | |
| 1978 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 1979 : Statement(loc) | |
| 1980 { | |
| 1981 this->condition = condition; | |
| 1982 this->ifbody = ifbody; | |
| 1983 this->elsebody = elsebody; | |
| 1984 } | |
| 1985 | |
| 1986 Statement *ConditionalStatement::syntaxCopy() | |
| 1987 { | |
| 1988 Statement *e = NULL; | |
| 1989 if (elsebody) | |
| 1990 e = elsebody->syntaxCopy(); | |
| 1991 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 1992 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 1993 return s; | |
| 1994 } | |
| 1995 | |
| 1996 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 1997 { | |
| 1998 //printf("ConditionalStatement::semantic()\n"); | |
| 1999 | |
| 2000 // If we can short-circuit evaluate the if statement, don't do the | |
| 2001 // semantic analysis of the skipped code. | |
| 2002 // This feature allows a limited form of conditional compilation. | |
| 2003 if (condition->include(sc, NULL)) | |
| 2004 { | |
| 2005 ifbody = ifbody->semantic(sc); | |
| 2006 return ifbody; | |
| 2007 } | |
| 2008 else | |
| 2009 { | |
| 2010 if (elsebody) | |
| 2011 elsebody = elsebody->semantic(sc); | |
| 2012 return elsebody; | |
| 2013 } | |
| 2014 } | |
| 2015 | |
| 2016 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 2017 { | |
| 2018 Statement *s; | |
| 2019 | |
| 2020 if (condition->include(sc, NULL)) | |
| 2021 s = ifbody; | |
| 2022 else | |
| 2023 s = elsebody; | |
| 2024 | |
| 2025 Statements *a = new Statements(); | |
| 2026 a->push(s); | |
| 2027 return a; | |
| 2028 } | |
| 2029 | |
| 2030 int ConditionalStatement::usesEH() | |
| 2031 { | |
| 2032 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2033 } | |
| 2034 | |
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2035 int ConditionalStatement::blockExit() |
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2036 { |
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2037 int result = ifbody->blockExit(); |
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2038 if (elsebody) |
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2039 result |= elsebody->blockExit(); |
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2040 return result; |
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2041 } |
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2042 |
| 159 | 2043 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2044 { | |
| 2045 condition->toCBuffer(buf, hgs); | |
| 2046 buf->writenl(); | |
| 336 | 2047 buf->writeByte('{'); |
| 2048 buf->writenl(); | |
| 159 | 2049 if (ifbody) |
| 2050 ifbody->toCBuffer(buf, hgs); | |
| 336 | 2051 buf->writeByte('}'); |
| 2052 buf->writenl(); | |
| 159 | 2053 if (elsebody) |
| 2054 { | |
| 2055 buf->writestring("else"); | |
| 2056 buf->writenl(); | |
| 336 | 2057 buf->writeByte('{'); |
| 2058 buf->writenl(); | |
| 159 | 2059 elsebody->toCBuffer(buf, hgs); |
| 336 | 2060 buf->writeByte('}'); |
| 2061 buf->writenl(); | |
| 159 | 2062 } |
| 2063 buf->writenl(); | |
| 2064 } | |
| 2065 | |
| 2066 | |
| 2067 /******************************** PragmaStatement ***************************/ | |
| 2068 | |
| 2069 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 2070 : Statement(loc) | |
| 2071 { | |
| 2072 this->ident = ident; | |
| 2073 this->args = args; | |
| 2074 this->body = body; | |
| 2075 } | |
| 2076 | |
| 2077 Statement *PragmaStatement::syntaxCopy() | |
| 2078 { | |
| 2079 Statement *b = NULL; | |
| 2080 if (body) | |
| 2081 b = body->syntaxCopy(); | |
| 2082 PragmaStatement *s = new PragmaStatement(loc, | |
| 2083 ident, Expression::arraySyntaxCopy(args), b); | |
| 2084 return s; | |
| 2085 } | |
| 2086 | |
| 2087 Statement *PragmaStatement::semantic(Scope *sc) | |
| 2088 { // Should be merged with PragmaDeclaration | |
| 2089 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 2090 //printf("body = %p\n", body); | |
| 2091 if (ident == Id::msg) | |
| 2092 { | |
| 2093 if (args) | |
| 2094 { | |
| 2095 for (size_t i = 0; i < args->dim; i++) | |
| 2096 { | |
| 2097 Expression *e = (Expression *)args->data[i]; | |
| 2098 | |
| 2099 e = e->semantic(sc); | |
| 2100 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2101 if (e->op == TOKstring) | |
| 2102 { | |
| 2103 StringExp *se = (StringExp *)e; | |
|
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2104 fprintf(stdmsg, "%.*s", (int)se->len, (char*)se->string); |
| 159 | 2105 } |
| 2106 else | |
| 2107 error("string expected for message, not '%s'", e->toChars()); | |
| 2108 } | |
| 2109 fprintf(stdmsg, "\n"); | |
| 2110 } | |
| 2111 } | |
| 2112 else if (ident == Id::lib) | |
| 2113 { | |
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2114 #if 1 |
|
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2115 /* Should this be allowed? |
|
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|
2116 */ |
|
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|
2117 error("pragma(lib) not allowed as statement"); |
|
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|
2118 #else |
| 159 | 2119 if (!args || args->dim != 1) |
| 2120 error("string expected for library name"); | |
| 2121 else | |
| 2122 { | |
| 2123 Expression *e = (Expression *)args->data[0]; | |
| 2124 | |
| 2125 e = e->semantic(sc); | |
| 2126 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2127 args->data[0] = (void *)e; | |
| 2128 if (e->op != TOKstring) | |
| 2129 error("string expected for library name, not '%s'", e->toChars()); | |
| 2130 else if (global.params.verbose) | |
| 2131 { | |
| 2132 StringExp *se = (StringExp *)e; | |
| 2133 char *name = (char *)mem.malloc(se->len + 1); | |
| 2134 memcpy(name, se->string, se->len); | |
| 2135 name[se->len] = 0; | |
| 2136 printf("library %s\n", name); | |
| 2137 mem.free(name); | |
| 2138 } | |
| 2139 } | |
|
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diff
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|
2140 #endif |
| 159 | 2141 } |
|
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|
2142 |
|
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diff
changeset
|
2143 // LDC |
|
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diff
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|
2144 else if (ident == Id::allow_inline) |
|
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|
2145 { |
|
03d7c4aac654
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diff
changeset
|
2146 sc->func->allowInlining = true; |
|
03d7c4aac654
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diff
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|
2147 } |
|
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parents:
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diff
changeset
|
2148 |
| 159 | 2149 else |
| 2150 error("unrecognized pragma(%s)", ident->toChars()); | |
| 2151 | |
| 2152 if (body) | |
| 2153 { | |
| 2154 body = body->semantic(sc); | |
| 2155 } | |
| 2156 return body; | |
| 2157 } | |
| 2158 | |
| 2159 int PragmaStatement::usesEH() | |
| 2160 { | |
| 2161 return body && body->usesEH(); | |
| 2162 } | |
| 2163 | |
| 336 | 2164 int PragmaStatement::blockExit() |
| 2165 { | |
| 2166 int result = BEfallthru; | |
| 2167 #if 0 // currently, no code is generated for Pragma's, so it's just fallthru | |
| 2168 if (arrayExpressionCanThrow(args)) | |
| 2169 result |= BEthrow; | |
| 2170 if (body) | |
| 2171 result |= body->blockExit(); | |
| 2172 #endif | |
| 2173 return result; | |
| 2174 } | |
| 2175 | |
| 159 | 2176 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2177 { | |
| 2178 buf->writestring("pragma ("); | |
| 2179 buf->writestring(ident->toChars()); | |
| 2180 if (args && args->dim) | |
| 2181 { | |
| 2182 buf->writestring(", "); | |
| 2183 argsToCBuffer(buf, args, hgs); | |
| 2184 } | |
| 2185 buf->writeByte(')'); | |
| 2186 if (body) | |
| 2187 { | |
| 2188 buf->writenl(); | |
| 2189 buf->writeByte('{'); | |
| 2190 buf->writenl(); | |
| 2191 | |
| 2192 body->toCBuffer(buf, hgs); | |
| 2193 | |
| 2194 buf->writeByte('}'); | |
| 2195 buf->writenl(); | |
| 2196 } | |
| 2197 else | |
| 2198 { | |
| 2199 buf->writeByte(';'); | |
| 2200 buf->writenl(); | |
| 2201 } | |
| 2202 } | |
| 2203 | |
| 2204 | |
| 2205 /******************************** StaticAssertStatement ***************************/ | |
| 2206 | |
| 2207 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 2208 : Statement(sa->loc) | |
| 2209 { | |
| 2210 this->sa = sa; | |
| 2211 } | |
| 2212 | |
| 2213 Statement *StaticAssertStatement::syntaxCopy() | |
| 2214 { | |
| 2215 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 2216 return s; | |
| 2217 } | |
| 2218 | |
| 2219 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 2220 { | |
| 2221 sa->semantic2(sc); | |
| 2222 return NULL; | |
| 2223 } | |
| 2224 | |
| 2225 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2226 { | |
| 2227 sa->toCBuffer(buf, hgs); | |
| 2228 } | |
| 2229 | |
| 2230 | |
| 2231 /******************************** SwitchStatement ***************************/ | |
| 2232 | |
| 2233 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 2234 : Statement(loc) | |
| 2235 { | |
| 2236 condition = c; | |
| 2237 body = b; | |
| 2238 sdefault = NULL; | |
| 2239 cases = NULL; | |
| 2240 hasNoDefault = 0; | |
| 2241 } | |
| 2242 | |
| 2243 Statement *SwitchStatement::syntaxCopy() | |
| 2244 { | |
| 2245 SwitchStatement *s = new SwitchStatement(loc, | |
| 2246 condition->syntaxCopy(), body->syntaxCopy()); | |
| 2247 return s; | |
| 2248 } | |
| 2249 | |
| 2250 Statement *SwitchStatement::semantic(Scope *sc) | |
| 2251 { | |
| 2252 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 2253 assert(!cases); // ensure semantic() is only run once | |
| 2254 | |
| 2255 condition = condition->semantic(sc); | |
| 2256 condition = resolveProperties(sc, condition); | |
| 2257 if (condition->type->isString()) | |
| 2258 { | |
| 2259 // If it's not an array, cast it to one | |
| 2260 if (condition->type->ty != Tarray) | |
| 2261 { | |
| 2262 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2263 } | |
| 2264 } | |
| 2265 else | |
| 2266 { condition = condition->integralPromotions(sc); | |
| 2267 condition->checkIntegral(); | |
| 2268 } | |
| 2269 condition = condition->optimize(WANTvalue); | |
| 2270 | |
| 2271 sc = sc->push(); | |
| 2272 sc->sbreak = this; | |
| 2273 sc->sw = this; | |
| 2274 | |
| 2275 cases = new Array(); | |
| 2276 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2277 body = body->semantic(sc); | |
| 2278 sc->noctor--; | |
| 2279 | |
| 2280 // Resolve any goto case's with exp | |
| 2281 for (int i = 0; i < gotoCases.dim; i++) | |
| 2282 { | |
| 2283 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2284 | |
| 2285 if (!gcs->exp) | |
| 2286 { | |
| 2287 gcs->error("no case statement following goto case;"); | |
| 2288 break; | |
| 2289 } | |
| 2290 | |
| 2291 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2292 { | |
| 2293 if (!scx->sw) | |
| 2294 continue; | |
| 2295 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2296 { | |
| 2297 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2298 | |
| 2299 if (cs->exp->equals(gcs->exp)) | |
| 2300 { | |
| 2301 gcs->cs = cs; | |
| 2302 goto Lfoundcase; | |
| 2303 } | |
| 2304 } | |
| 2305 } | |
| 2306 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2307 | |
| 2308 Lfoundcase: | |
| 2309 ; | |
| 2310 } | |
| 2311 | |
| 2312 if (!sc->sw->sdefault) | |
| 2313 { hasNoDefault = 1; | |
| 2314 | |
|
1103
b30fe7e1dbb9
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Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
945
diff
changeset
|
2315 warning("switch statement has no default"); |
| 159 | 2316 |
| 2317 // Generate runtime error if the default is hit | |
| 2318 Statements *a = new Statements(); | |
| 2319 CompoundStatement *cs; | |
| 2320 Statement *s; | |
| 2321 | |
| 2322 if (global.params.useSwitchError) | |
| 2323 s = new SwitchErrorStatement(loc); | |
| 2324 else | |
| 2325 { Expression *e = new HaltExp(loc); | |
| 2326 s = new ExpStatement(loc, e); | |
| 2327 } | |
| 2328 | |
| 2329 a->reserve(4); | |
| 2330 a->push(body); | |
| 901 | 2331 |
| 2332 // LDC needs semantic to be run on break | |
| 2333 Statement *breakstmt = new BreakStatement(loc, NULL); | |
| 2334 breakstmt->semantic(sc); | |
| 2335 a->push(breakstmt); | |
| 2336 | |
| 159 | 2337 sc->sw->sdefault = new DefaultStatement(loc, s); |
| 2338 a->push(sc->sw->sdefault); | |
| 2339 cs = new CompoundStatement(loc, a); | |
| 2340 body = cs; | |
| 2341 } | |
| 2342 | |
| 2343 sc->pop(); | |
| 2344 return this; | |
| 2345 } | |
| 2346 | |
| 2347 int SwitchStatement::hasBreak() | |
| 2348 { | |
| 2349 return TRUE; | |
| 2350 } | |
| 2351 | |
| 2352 int SwitchStatement::usesEH() | |
| 2353 { | |
| 2354 return body ? body->usesEH() : 0; | |
| 2355 } | |
| 2356 | |
| 336 | 2357 int SwitchStatement::blockExit() |
| 2358 { int result = BEnone; | |
| 2359 if (condition->canThrow()) | |
| 2360 result |= BEthrow; | |
| 2361 | |
| 2362 if (body) | |
| 2363 { result |= body->blockExit(); | |
| 2364 if (result & BEbreak) | |
| 2365 { result |= BEfallthru; | |
| 2366 result &= ~BEbreak; | |
| 2367 } | |
| 2368 } | |
| 2369 else | |
| 2370 result |= BEfallthru; | |
| 2371 | |
| 2372 return result; | |
| 2373 } | |
| 2374 | |
| 159 | 2375 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2376 { | |
| 2377 buf->writestring("switch ("); | |
| 2378 condition->toCBuffer(buf, hgs); | |
| 2379 buf->writebyte(')'); | |
| 2380 buf->writenl(); | |
| 2381 if (body) | |
| 2382 { | |
| 2383 if (!body->isScopeStatement()) | |
| 2384 { buf->writebyte('{'); | |
| 2385 buf->writenl(); | |
| 2386 body->toCBuffer(buf, hgs); | |
| 2387 buf->writebyte('}'); | |
| 2388 buf->writenl(); | |
| 2389 } | |
| 2390 else | |
| 2391 { | |
| 2392 body->toCBuffer(buf, hgs); | |
| 2393 } | |
| 2394 } | |
| 2395 } | |
| 2396 | |
| 2397 /******************************** CaseStatement ***************************/ | |
| 2398 | |
| 2399 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2400 : Statement(loc) | |
| 2401 { | |
| 2402 this->exp = exp; | |
| 2403 this->statement = s; | |
| 2404 cblock = NULL; | |
| 2405 bodyBB = NULL; | |
|
262
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parents:
232
diff
changeset
|
2406 llvmIdx = NULL; |
| 159 | 2407 } |
| 2408 | |
| 2409 Statement *CaseStatement::syntaxCopy() | |
| 2410 { | |
| 2411 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2412 return s; | |
| 2413 } | |
| 2414 | |
| 2415 Statement *CaseStatement::semantic(Scope *sc) | |
| 2416 { SwitchStatement *sw = sc->sw; | |
| 2417 | |
| 2418 //printf("CaseStatement::semantic() %s\n", toChars()); | |
| 2419 exp = exp->semantic(sc); | |
| 2420 if (sw) | |
|
846
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parents:
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diff
changeset
|
2421 { |
| 159 | 2422 exp = exp->implicitCastTo(sc, sw->condition->type); |
| 2423 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2424 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2425 { | |
| 2426 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2427 exp = new IntegerExp(0); | |
| 2428 } | |
| 2429 | |
|
846
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Merged DMD 1.037 frontend
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794
diff
changeset
|
2430 for (int i = 0; i < sw->cases->dim; i++) |
| 159 | 2431 { |
| 2432 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2433 | |
| 2434 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2435 if (cs->exp->equals(exp)) | |
| 2436 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2437 break; | |
| 2438 } | |
| 2439 } | |
| 2440 | |
| 2441 sw->cases->push(this); | |
| 2442 | |
| 2443 // Resolve any goto case's with no exp to this case statement | |
|
846
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794
diff
changeset
|
2444 for (size_t i = 0; i < sw->gotoCases.dim; i++) |
| 159 | 2445 { |
| 2446 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2447 | |
| 2448 if (!gcs->exp) | |
| 2449 { | |
| 2450 gcs->cs = this; | |
| 2451 sw->gotoCases.remove(i); // remove from array | |
| 2452 } | |
| 2453 } | |
| 2454 } | |
| 2455 else | |
| 2456 error("case not in switch statement"); | |
| 2457 statement = statement->semantic(sc); | |
| 2458 return this; | |
| 2459 } | |
| 2460 | |
| 2461 int CaseStatement::compare(Object *obj) | |
| 2462 { | |
| 2463 // Sort cases so we can do an efficient lookup | |
| 2464 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2465 | |
| 2466 return exp->compare(cs2->exp); | |
| 2467 } | |
| 2468 | |
| 2469 int CaseStatement::usesEH() | |
| 2470 { | |
| 2471 return statement->usesEH(); | |
| 2472 } | |
| 2473 | |
| 336 | 2474 int CaseStatement::blockExit() |
| 2475 { | |
| 2476 return statement->blockExit(); | |
| 2477 } | |
| 2478 | |
| 159 | 2479 int CaseStatement::comeFrom() |
| 2480 { | |
| 2481 return TRUE; | |
| 2482 } | |
| 2483 | |
| 2484 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2485 { | |
| 2486 buf->writestring("case "); | |
| 2487 exp->toCBuffer(buf, hgs); | |
| 2488 buf->writebyte(':'); | |
| 2489 buf->writenl(); | |
| 2490 statement->toCBuffer(buf, hgs); | |
| 2491 } | |
| 2492 | |
| 2493 /******************************** DefaultStatement ***************************/ | |
| 2494 | |
| 2495 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 2496 : Statement(loc) | |
| 2497 { | |
| 2498 this->statement = s; | |
| 2499 #if IN_GCC | |
| 2500 + cblock = NULL; | |
| 2501 #endif | |
| 2502 bodyBB = NULL; | |
| 2503 } | |
| 2504 | |
| 2505 Statement *DefaultStatement::syntaxCopy() | |
| 2506 { | |
| 2507 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 2508 return s; | |
| 2509 } | |
| 2510 | |
| 2511 Statement *DefaultStatement::semantic(Scope *sc) | |
| 2512 { | |
| 336 | 2513 //printf("DefaultStatement::semantic()\n"); |
| 159 | 2514 if (sc->sw) |
| 2515 { | |
| 2516 if (sc->sw->sdefault) | |
| 2517 { | |
| 2518 error("switch statement already has a default"); | |
| 2519 } | |
| 2520 sc->sw->sdefault = this; | |
| 2521 } | |
| 2522 else | |
| 2523 error("default not in switch statement"); | |
| 2524 statement = statement->semantic(sc); | |
| 2525 return this; | |
| 2526 } | |
| 2527 | |
| 2528 int DefaultStatement::usesEH() | |
| 2529 { | |
| 2530 return statement->usesEH(); | |
| 2531 } | |
| 2532 | |
| 336 | 2533 int DefaultStatement::blockExit() |
| 2534 { | |
| 2535 return statement->blockExit(); | |
| 2536 } | |
| 2537 | |
| 159 | 2538 int DefaultStatement::comeFrom() |
| 2539 { | |
| 2540 return TRUE; | |
| 2541 } | |
| 2542 | |
| 2543 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2544 { | |
| 2545 buf->writestring("default:\n"); | |
| 2546 statement->toCBuffer(buf, hgs); | |
| 2547 } | |
| 2548 | |
| 2549 /******************************** GotoDefaultStatement ***************************/ | |
| 2550 | |
| 2551 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 2552 : Statement(loc) | |
| 2553 { | |
| 2554 sw = NULL; | |
| 2555 } | |
| 2556 | |
| 2557 Statement *GotoDefaultStatement::syntaxCopy() | |
| 2558 { | |
| 2559 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 2560 return s; | |
| 2561 } | |
| 2562 | |
| 2563 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 2564 { | |
| 2565 sw = sc->sw; | |
| 2566 if (!sw) | |
| 2567 error("goto default not in switch statement"); | |
| 2568 return this; | |
| 2569 } | |
| 2570 | |
| 336 | 2571 int GotoDefaultStatement::blockExit() |
| 2572 { | |
| 2573 return BEgoto; | |
| 2574 } | |
| 2575 | |
| 159 | 2576 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2577 { | |
| 2578 buf->writestring("goto default;\n"); | |
| 2579 } | |
| 2580 | |
| 2581 /******************************** GotoCaseStatement ***************************/ | |
| 2582 | |
| 2583 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 2584 : Statement(loc) | |
| 2585 { | |
| 2586 cs = NULL; | |
| 2587 this->exp = exp; | |
| 2588 sw = NULL; | |
| 2589 } | |
| 2590 | |
| 2591 Statement *GotoCaseStatement::syntaxCopy() | |
| 2592 { | |
| 2593 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 2594 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 2595 return s; | |
| 2596 } | |
| 2597 | |
| 2598 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 2599 { | |
| 2600 if (exp) | |
| 2601 exp = exp->semantic(sc); | |
| 2602 | |
| 2603 if (!sc->sw) | |
| 2604 error("goto case not in switch statement"); | |
| 2605 else | |
| 2606 { | |
| 2607 sw = sc->sw; | |
| 2608 sc->sw->gotoCases.push(this); | |
| 2609 if (exp) | |
| 2610 { | |
| 2611 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 2612 exp = exp->optimize(WANTvalue); | |
| 2613 } | |
| 2614 } | |
| 2615 return this; | |
| 2616 } | |
| 2617 | |
| 336 | 2618 int GotoCaseStatement::blockExit() |
| 2619 { | |
| 2620 return BEgoto; | |
| 2621 } | |
| 2622 | |
| 159 | 2623 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2624 { | |
| 2625 buf->writestring("goto case"); | |
| 2626 if (exp) | |
| 2627 { buf->writebyte(' '); | |
| 2628 exp->toCBuffer(buf, hgs); | |
| 2629 } | |
| 2630 buf->writebyte(';'); | |
| 2631 buf->writenl(); | |
| 2632 } | |
| 2633 | |
| 2634 /******************************** SwitchErrorStatement ***************************/ | |
| 2635 | |
| 2636 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 2637 : Statement(loc) | |
| 2638 { | |
| 2639 } | |
| 2640 | |
| 336 | 2641 int SwitchErrorStatement::blockExit() |
| 2642 { | |
| 2643 return BEthrow; | |
| 2644 } | |
| 2645 | |
| 159 | 2646 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2647 { | |
| 2648 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 2649 buf->writenl(); | |
| 2650 } | |
| 2651 | |
| 2652 /******************************** ReturnStatement ***************************/ | |
| 2653 | |
| 2654 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 2655 : Statement(loc) | |
| 2656 { | |
| 2657 this->exp = exp; | |
| 2658 } | |
| 2659 | |
| 2660 Statement *ReturnStatement::syntaxCopy() | |
| 2661 { | |
| 2662 Expression *e = NULL; | |
| 2663 if (exp) | |
| 2664 e = exp->syntaxCopy(); | |
| 2665 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 2666 return s; | |
| 2667 } | |
| 2668 | |
| 2669 Statement *ReturnStatement::semantic(Scope *sc) | |
| 2670 { | |
| 2671 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 2672 | |
| 2673 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 2674 Scope *scx = sc; | |
| 2675 int implicit0 = 0; | |
| 2676 | |
| 2677 if (sc->fes) | |
| 2678 { | |
| 2679 // Find scope of function foreach is in | |
| 2680 for (; 1; scx = scx->enclosing) | |
| 2681 { | |
| 2682 assert(scx); | |
| 2683 if (scx->func != fd) | |
| 2684 { fd = scx->func; // fd is now function enclosing foreach | |
| 2685 break; | |
| 2686 } | |
| 2687 } | |
| 2688 } | |
| 2689 | |
| 2690 Type *tret = fd->type->nextOf(); | |
| 2691 if (fd->tintro) | |
| 336 | 2692 /* We'll be implicitly casting the return expression to tintro |
| 2693 */ | |
| 159 | 2694 tret = fd->tintro->nextOf(); |
| 2695 Type *tbret = NULL; | |
| 2696 | |
| 2697 if (tret) | |
| 2698 tbret = tret->toBasetype(); | |
| 2699 | |
| 2700 // main() returns 0, even if it returns void | |
| 2701 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 2702 { implicit0 = 1; | |
| 2703 exp = new IntegerExp(0); | |
| 2704 } | |
| 2705 | |
| 2706 if (sc->incontract || scx->incontract) | |
| 2707 error("return statements cannot be in contracts"); | |
|
1141
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
2708 if (sc->enclosingFinally || scx->enclosingFinally) |
| 159 | 2709 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); |
| 2710 | |
| 2711 if (fd->isCtorDeclaration()) | |
| 2712 { | |
| 2713 // Constructors implicitly do: | |
| 2714 // return this; | |
| 2715 if (exp && exp->op != TOKthis) | |
| 2716 error("cannot return expression from constructor"); | |
| 2717 exp = new ThisExp(0); | |
| 2718 } | |
| 2719 | |
| 2720 if (!exp) | |
| 2721 fd->nrvo_can = 0; | |
| 2722 | |
| 2723 if (exp) | |
| 2724 { | |
| 2725 fd->hasReturnExp |= 1; | |
| 2726 | |
| 2727 exp = exp->semantic(sc); | |
| 2728 exp = resolveProperties(sc, exp); | |
| 2729 exp = exp->optimize(WANTvalue); | |
| 2730 | |
| 2731 if (fd->nrvo_can && exp->op == TOKvar) | |
| 2732 { VarExp *ve = (VarExp *)exp; | |
| 2733 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 2734 | |
| 2735 if (!v || v->isOut() || v->isRef()) | |
| 2736 fd->nrvo_can = 0; | |
| 2737 else if (fd->nrvo_var == NULL) | |
| 2738 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 2739 fd->nrvo_var = v; | |
| 2740 else | |
| 2741 fd->nrvo_can = 0; | |
| 2742 } | |
| 2743 else if (fd->nrvo_var != v) | |
| 2744 fd->nrvo_can = 0; | |
| 2745 } | |
| 2746 else | |
| 2747 fd->nrvo_can = 0; | |
| 2748 | |
| 2749 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2750 { | |
| 2751 } | |
| 2752 else if (fd->inferRetType) | |
| 2753 { | |
| 2754 if (fd->type->nextOf()) | |
| 2755 { | |
| 2756 if (!exp->type->equals(fd->type->nextOf())) | |
| 2757 error("mismatched function return type inference of %s and %s", | |
| 2758 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 2759 } | |
| 2760 else | |
| 2761 { | |
| 2762 fd->type->next = exp->type; | |
| 2763 fd->type = fd->type->semantic(loc, sc); | |
| 2764 if (!fd->tintro) | |
| 2765 { tret = fd->type->nextOf(); | |
| 2766 tbret = tret->toBasetype(); | |
| 2767 } | |
| 2768 } | |
| 2769 } | |
| 2770 else if (tbret->ty != Tvoid) | |
| 2771 { | |
| 2772 exp = exp->implicitCastTo(sc, tret); | |
| 2773 } | |
| 2774 } | |
| 2775 else if (fd->inferRetType) | |
| 2776 { | |
| 2777 if (fd->type->nextOf()) | |
| 2778 { | |
| 2779 if (fd->type->nextOf()->ty != Tvoid) | |
| 2780 error("mismatched function return type inference of void and %s", | |
| 2781 fd->type->nextOf()->toChars()); | |
| 2782 } | |
| 2783 else | |
| 2784 { | |
| 2785 fd->type->next = Type::tvoid; | |
| 2786 fd->type = fd->type->semantic(loc, sc); | |
| 2787 if (!fd->tintro) | |
| 2788 { tret = Type::tvoid; | |
| 2789 tbret = tret; | |
| 2790 } | |
| 2791 } | |
| 2792 } | |
| 2793 else if (tbret->ty != Tvoid) // if non-void return | |
| 2794 error("return expression expected"); | |
| 2795 | |
| 2796 if (sc->fes) | |
| 2797 { | |
| 2798 Statement *s; | |
| 2799 | |
| 2800 if (exp && !implicit0) | |
| 2801 { | |
| 2802 exp = exp->implicitCastTo(sc, tret); | |
| 2803 } | |
| 2804 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 2805 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 2806 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 2807 exp->op == TOKstring) | |
| 2808 { | |
| 2809 sc->fes->cases.push(this); | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2810 // Construct: return cases.dim+1; |
| 159 | 2811 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 2812 } | |
| 2813 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 2814 { | |
| 2815 s = new ReturnStatement(0, NULL); | |
| 2816 sc->fes->cases.push(s); | |
| 2817 | |
| 2818 // Construct: { exp; return cases.dim + 1; } | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2819 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2820 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2821 s = new CompoundStatement(loc, s1, s2); |
| 2822 } | |
| 2823 else | |
| 2824 { | |
| 2825 // Construct: return vresult; | |
| 2826 if (!fd->vresult) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2827 { // Declare vresult |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2828 VarDeclaration *v = new VarDeclaration(loc, tret, Id::result, NULL); |
| 159 | 2829 v->noauto = 1; |
| 2830 v->semantic(scx); | |
| 2831 if (!scx->insert(v)) | |
| 2832 assert(0); | |
| 2833 v->parent = fd; | |
| 2834 fd->vresult = v; | |
| 2835 } | |
| 2836 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2837 s = new ReturnStatement(0, new VarExp(0, fd->vresult)); |
| 159 | 2838 sc->fes->cases.push(s); |
| 2839 | |
| 2840 // 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
|
2841 exp = new AssignExp(loc, new VarExp(0, fd->vresult), exp); |
| 159 | 2842 exp = exp->semantic(sc); |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2843 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2844 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2845 s = new CompoundStatement(loc, s1, s2); |
| 2846 } | |
| 2847 return s; | |
| 2848 } | |
| 2849 | |
| 2850 if (exp) | |
| 2851 { | |
| 2852 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2853 { | |
| 2854 assert(fd->vresult); | |
| 2855 VarExp *v = new VarExp(0, fd->vresult); | |
| 2856 | |
| 2857 exp = new AssignExp(loc, v, exp); | |
| 2858 exp = exp->semantic(sc); | |
| 2859 } | |
| 2860 //exp->dump(0); | |
| 2861 //exp->print(); | |
| 2862 exp->checkEscape(); | |
| 2863 } | |
| 2864 | |
| 2865 /* BUG: need to issue an error on: | |
| 2866 * this | |
| 2867 * { if (x) return; | |
| 2868 * super(); | |
| 2869 * } | |
| 2870 */ | |
| 2871 | |
| 2872 if (sc->callSuper & CSXany_ctor && | |
| 2873 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 2874 error("return without calling constructor"); | |
| 2875 | |
| 2876 sc->callSuper |= CSXreturn; | |
| 2877 | |
| 2878 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 2879 if (fd->returnLabel) | |
| 2880 { | |
| 2881 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 2882 | |
| 2883 gs->label = fd->returnLabel; | |
| 2884 if (exp) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2885 { /* Replace: return exp; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2886 * with: exp; goto returnLabel; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2887 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2888 Statement *s = new ExpStatement(0, exp); |
| 159 | 2889 return new CompoundStatement(loc, s, gs); |
| 2890 } | |
| 2891 return gs; | |
| 2892 } | |
| 2893 | |
| 2894 if (exp && tbret->ty == Tvoid && !fd->isMain()) | |
| 336 | 2895 { |
| 2896 /* Replace: | |
| 2897 * return exp; | |
| 2898 * with: | |
| 2899 * exp; return; | |
| 2900 */ | |
| 2901 Statement *s = new ExpStatement(loc, exp); | |
| 159 | 2902 loc = 0; |
| 2903 exp = NULL; | |
| 2904 return new CompoundStatement(loc, s, this); | |
| 2905 } | |
| 2906 | |
| 2907 return this; | |
| 2908 } | |
| 2909 | |
| 336 | 2910 int ReturnStatement::blockExit() |
| 2911 { int result = BEreturn; | |
| 2912 | |
| 2913 if (exp && exp->canThrow()) | |
| 2914 result |= BEthrow; | |
| 2915 return result; | |
| 2916 } | |
| 2917 | |
| 159 | 2918 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2919 { | |
| 2920 buf->printf("return "); | |
| 2921 if (exp) | |
| 2922 exp->toCBuffer(buf, hgs); | |
| 2923 buf->writeByte(';'); | |
| 2924 buf->writenl(); | |
| 2925 } | |
| 2926 | |
| 2927 /******************************** BreakStatement ***************************/ | |
| 2928 | |
| 2929 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 2930 : Statement(loc) | |
| 2931 { | |
| 2932 this->ident = ident; | |
| 2933 } | |
| 2934 | |
| 2935 Statement *BreakStatement::syntaxCopy() | |
| 2936 { | |
| 2937 BreakStatement *s = new BreakStatement(loc, ident); | |
| 2938 return s; | |
| 2939 } | |
| 2940 | |
| 2941 Statement *BreakStatement::semantic(Scope *sc) | |
| 2942 { | |
| 336 | 2943 //printf("BreakStatement::semantic()\n"); |
| 159 | 2944 // If: |
| 2945 // break Identifier; | |
| 2946 if (ident) | |
| 2947 { | |
| 2948 Scope *scx; | |
| 2949 FuncDeclaration *thisfunc = sc->func; | |
| 2950 | |
| 2951 for (scx = sc; scx; scx = scx->enclosing) | |
| 2952 { | |
| 2953 LabelStatement *ls; | |
| 2954 | |
| 2955 if (scx->func != thisfunc) // if in enclosing function | |
| 2956 { | |
| 2957 if (sc->fes) // if this is the body of a foreach | |
| 2958 { | |
| 2959 /* Post this statement to the fes, and replace | |
| 2960 * it with a return value that caller will put into | |
| 2961 * a switch. Caller will figure out where the break | |
| 2962 * label actually is. | |
| 2963 * Case numbers start with 2, not 0, as 0 is continue | |
| 2964 * and 1 is break. | |
| 2965 */ | |
| 2966 Statement *s; | |
| 2967 sc->fes->cases.push(this); | |
| 2968 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2969 return s; | |
| 2970 } | |
| 2971 break; // can't break to it | |
| 2972 } | |
| 2973 | |
| 2974 ls = scx->slabel; | |
| 2975 if (ls && ls->ident == ident) | |
| 2976 { | |
| 2977 Statement *s = ls->statement; | |
| 2978 | |
| 2979 if (!s->hasBreak()) | |
| 2980 error("label '%s' has no break", ident->toChars()); | |
|
1141
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
2981 if (ls->enclosingFinally != sc->enclosingFinally) |
| 159 | 2982 error("cannot break out of finally block"); |
| 2983 | |
| 2984 this->target = ls; | |
| 2985 return this; | |
| 2986 } | |
| 2987 } | |
| 2988 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 2989 } | |
| 2990 else if (!sc->sbreak) | |
| 2991 { | |
| 2992 if (sc->fes) | |
| 2993 { Statement *s; | |
| 2994 | |
| 2995 // Replace break; with return 1; | |
| 2996 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 2997 return s; | |
| 2998 } | |
| 2999 error("break is not inside a loop or switch"); | |
| 3000 } | |
| 3001 return this; | |
| 3002 } | |
| 3003 | |
| 336 | 3004 int BreakStatement::blockExit() |
| 3005 { | |
| 3006 //printf("BreakStatement::blockExit(%p) = x%x\n", this, ident ? BEgoto : BEbreak); | |
| 3007 return ident ? BEgoto : BEbreak; | |
| 3008 } | |
| 3009 | |
| 159 | 3010 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3011 { | |
| 3012 buf->writestring("break"); | |
| 3013 if (ident) | |
| 3014 { buf->writebyte(' '); | |
| 3015 buf->writestring(ident->toChars()); | |
| 3016 } | |
| 3017 buf->writebyte(';'); | |
| 3018 buf->writenl(); | |
| 3019 } | |
| 3020 | |
| 3021 /******************************** ContinueStatement ***************************/ | |
| 3022 | |
| 3023 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 3024 : Statement(loc) | |
| 3025 { | |
| 3026 this->ident = ident; | |
| 3027 } | |
| 3028 | |
| 3029 Statement *ContinueStatement::syntaxCopy() | |
| 3030 { | |
| 3031 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 3032 return s; | |
| 3033 } | |
| 3034 | |
| 3035 Statement *ContinueStatement::semantic(Scope *sc) | |
| 3036 { | |
| 3037 //printf("ContinueStatement::semantic() %p\n", this); | |
| 3038 if (ident) | |
| 3039 { | |
| 3040 Scope *scx; | |
| 3041 FuncDeclaration *thisfunc = sc->func; | |
| 3042 | |
| 3043 for (scx = sc; scx; scx = scx->enclosing) | |
| 3044 { | |
| 3045 LabelStatement *ls; | |
| 3046 | |
| 3047 if (scx->func != thisfunc) // if in enclosing function | |
| 3048 { | |
| 3049 if (sc->fes) // if this is the body of a foreach | |
| 3050 { | |
| 3051 for (; scx; scx = scx->enclosing) | |
| 3052 { | |
| 3053 ls = scx->slabel; | |
| 3054 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 3055 { | |
| 3056 // Replace continue ident; with return 0; | |
| 3057 return new ReturnStatement(0, new IntegerExp(0)); | |
| 3058 } | |
| 3059 } | |
| 3060 | |
| 3061 /* Post this statement to the fes, and replace | |
| 3062 * it with a return value that caller will put into | |
| 3063 * a switch. Caller will figure out where the break | |
| 3064 * label actually is. | |
| 3065 * Case numbers start with 2, not 0, as 0 is continue | |
| 3066 * and 1 is break. | |
| 3067 */ | |
| 3068 Statement *s; | |
| 3069 sc->fes->cases.push(this); | |
| 3070 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3071 return s; | |
| 3072 } | |
| 3073 break; // can't continue to it | |
| 3074 } | |
| 3075 | |
| 3076 ls = scx->slabel; | |
| 3077 if (ls && ls->ident == ident) | |
| 3078 { | |
| 3079 Statement *s = ls->statement; | |
| 3080 | |
| 3081 if (!s->hasContinue()) | |
| 3082 error("label '%s' has no continue", ident->toChars()); | |
|
1141
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3083 if (ls->enclosingFinally != sc->enclosingFinally) |
| 159 | 3084 error("cannot continue out of finally block"); |
| 3085 | |
| 3086 this->target = ls; | |
| 3087 return this; | |
| 3088 } | |
| 3089 } | |
| 3090 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 3091 } | |
| 3092 else if (!sc->scontinue) | |
| 3093 { | |
| 3094 if (sc->fes) | |
| 3095 { Statement *s; | |
| 3096 | |
| 3097 // Replace continue; with return 0; | |
| 3098 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 3099 return s; | |
| 3100 } | |
| 3101 error("continue is not inside a loop"); | |
| 3102 } | |
| 3103 return this; | |
| 3104 } | |
| 3105 | |
| 336 | 3106 int ContinueStatement::blockExit() |
| 3107 { | |
| 3108 return ident ? BEgoto : BEcontinue; | |
| 3109 } | |
| 3110 | |
| 159 | 3111 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3112 { | |
| 3113 buf->writestring("continue"); | |
| 3114 if (ident) | |
| 3115 { buf->writebyte(' '); | |
| 3116 buf->writestring(ident->toChars()); | |
| 3117 } | |
| 3118 buf->writebyte(';'); | |
| 3119 buf->writenl(); | |
| 3120 } | |
| 3121 | |
| 3122 /******************************** SynchronizedStatement ***************************/ | |
| 3123 | |
| 3124 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 3125 : Statement(loc) | |
| 3126 { | |
| 3127 this->exp = exp; | |
| 3128 this->body = body; | |
| 3129 this->esync = NULL; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3130 // LDC |
| 309 | 3131 this->llsync = NULL; |
| 159 | 3132 } |
| 3133 | |
| 3134 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 3135 : Statement(loc) | |
| 3136 { | |
| 3137 this->exp = NULL; | |
| 3138 this->body = body; | |
| 3139 this->esync = esync; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3140 // LDC |
| 309 | 3141 this->llsync = NULL; |
| 159 | 3142 } |
| 3143 | |
| 3144 Statement *SynchronizedStatement::syntaxCopy() | |
| 3145 { | |
| 3146 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3147 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 3148 return s; | |
| 3149 } | |
| 3150 | |
| 3151 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 3152 { | |
| 3153 if (exp) | |
| 3154 { ClassDeclaration *cd; | |
| 3155 | |
| 3156 exp = exp->semantic(sc); | |
| 3157 exp = resolveProperties(sc, exp); | |
| 3158 cd = exp->type->isClassHandle(); | |
| 3159 if (!cd) | |
| 3160 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 3161 else if (cd->isInterfaceDeclaration()) | |
| 3162 { Type *t = new TypeIdentifier(0, Id::Object); | |
| 3163 | |
| 3164 t = t->semantic(0, sc); | |
| 3165 exp = new CastExp(loc, exp, t); | |
| 3166 exp = exp->semantic(sc); | |
| 3167 } | |
| 3168 } | |
| 3169 if (body) | |
| 309 | 3170 { |
|
1141
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3171 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3172 sc->enclosingScopeExit = this; |
|
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3173 body = body->semantic(sc); |
|
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3174 sc->enclosingScopeExit = oldScopeExit; |
| 309 | 3175 } |
| 159 | 3176 return this; |
| 3177 } | |
| 3178 | |
| 3179 int SynchronizedStatement::hasBreak() | |
| 3180 { | |
| 3181 return FALSE; //TRUE; | |
| 3182 } | |
| 3183 | |
| 3184 int SynchronizedStatement::hasContinue() | |
| 3185 { | |
| 3186 return FALSE; //TRUE; | |
| 3187 } | |
| 3188 | |
| 3189 int SynchronizedStatement::usesEH() | |
| 3190 { | |
| 3191 return TRUE; | |
| 3192 } | |
| 3193 | |
| 336 | 3194 int SynchronizedStatement::blockExit() |
| 3195 { | |
| 3196 return body ? body->blockExit() : BEfallthru; | |
| 3197 } | |
| 3198 | |
| 159 | 3199 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3200 { | |
| 3201 buf->writestring("synchronized"); | |
| 3202 if (exp) | |
| 3203 { buf->writebyte('('); | |
| 3204 exp->toCBuffer(buf, hgs); | |
| 3205 buf->writebyte(')'); | |
| 3206 } | |
| 3207 if (body) | |
| 3208 { | |
| 3209 buf->writebyte(' '); | |
| 3210 body->toCBuffer(buf, hgs); | |
| 3211 } | |
| 3212 } | |
| 3213 | |
| 3214 /******************************** WithStatement ***************************/ | |
| 3215 | |
| 3216 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 3217 : Statement(loc) | |
| 3218 { | |
| 3219 this->exp = exp; | |
| 3220 this->body = body; | |
| 3221 wthis = NULL; | |
| 3222 } | |
| 3223 | |
| 3224 Statement *WithStatement::syntaxCopy() | |
| 3225 { | |
| 3226 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 3227 return s; | |
| 3228 } | |
| 3229 | |
| 3230 Statement *WithStatement::semantic(Scope *sc) | |
| 3231 { ScopeDsymbol *sym; | |
| 3232 Initializer *init; | |
| 3233 | |
| 3234 //printf("WithStatement::semantic()\n"); | |
| 3235 exp = exp->semantic(sc); | |
| 3236 exp = resolveProperties(sc, exp); | |
| 3237 if (exp->op == TOKimport) | |
| 3238 { ScopeExp *es = (ScopeExp *)exp; | |
| 3239 | |
| 3240 sym = es->sds; | |
| 3241 } | |
| 3242 else if (exp->op == TOKtype) | |
| 3243 { TypeExp *es = (TypeExp *)exp; | |
| 3244 | |
| 3245 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 3246 if (!sym) | |
| 3247 { error("%s has no members", es->toChars()); | |
| 3248 body = body->semantic(sc); | |
| 3249 return this; | |
| 3250 } | |
| 3251 } | |
| 3252 else | |
| 3253 { Type *t = exp->type; | |
| 3254 | |
| 3255 assert(t); | |
| 3256 t = t->toBasetype(); | |
| 3257 if (t->isClassHandle()) | |
| 3258 { | |
| 3259 init = new ExpInitializer(loc, exp); | |
| 3260 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3261 wthis->semantic(sc); | |
| 3262 | |
| 3263 sym = new WithScopeSymbol(this); | |
| 3264 sym->parent = sc->scopesym; | |
| 3265 } | |
| 3266 else if (t->ty == Tstruct) | |
| 3267 { | |
| 3268 Expression *e = exp->addressOf(sc); | |
| 3269 init = new ExpInitializer(loc, e); | |
| 3270 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3271 wthis->semantic(sc); | |
| 3272 sym = new WithScopeSymbol(this); | |
| 3273 sym->parent = sc->scopesym; | |
| 3274 } | |
| 3275 else | |
| 3276 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3277 return NULL; | |
| 3278 } | |
| 3279 } | |
| 3280 sc = sc->push(sym); | |
| 3281 | |
| 3282 if (body) | |
| 3283 body = body->semantic(sc); | |
| 3284 | |
| 3285 sc->pop(); | |
| 3286 | |
| 3287 return this; | |
| 3288 } | |
| 3289 | |
| 3290 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3291 { | |
| 3292 buf->writestring("with ("); | |
| 3293 exp->toCBuffer(buf, hgs); | |
| 3294 buf->writestring(")\n"); | |
| 3295 if (body) | |
| 3296 body->toCBuffer(buf, hgs); | |
| 3297 } | |
| 3298 | |
| 3299 int WithStatement::usesEH() | |
| 3300 { | |
| 3301 return body ? body->usesEH() : 0; | |
| 3302 } | |
| 3303 | |
| 336 | 3304 int WithStatement::blockExit() |
| 3305 { | |
| 3306 int result = BEnone; | |
| 3307 if (exp->canThrow()) | |
| 3308 result = BEthrow; | |
| 3309 if (body) | |
| 3310 result |= body->blockExit(); | |
| 3311 else | |
| 3312 result |= BEfallthru; | |
| 3313 return result; | |
| 3314 } | |
| 3315 | |
| 159 | 3316 /******************************** TryCatchStatement ***************************/ |
| 3317 | |
| 3318 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3319 : Statement(loc) | |
| 3320 { | |
| 3321 this->body = body; | |
| 3322 this->catches = catches; | |
| 3323 } | |
| 3324 | |
| 3325 Statement *TryCatchStatement::syntaxCopy() | |
| 3326 { | |
| 3327 Array *a = new Array(); | |
| 3328 a->setDim(catches->dim); | |
| 3329 for (int i = 0; i < a->dim; i++) | |
| 3330 { Catch *c; | |
| 3331 | |
| 3332 c = (Catch *)catches->data[i]; | |
| 3333 c = c->syntaxCopy(); | |
| 3334 a->data[i] = c; | |
| 3335 } | |
| 3336 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3337 return s; | |
| 3338 } | |
| 3339 | |
| 3340 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3341 { | |
| 3342 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3343 | |
| 336 | 3344 /* Even if body is NULL, still do semantic analysis on catches |
| 3345 */ | |
| 3346 for (size_t i = 0; i < catches->dim; i++) | |
| 3347 { Catch *c = (Catch *)catches->data[i]; | |
| 159 | 3348 c->semantic(sc); |
| 3349 | |
| 3350 // Determine if current catch 'hides' any previous catches | |
| 336 | 3351 for (size_t j = 0; j < i; j++) |
| 159 | 3352 { Catch *cj = (Catch *)catches->data[j]; |
| 3353 char *si = c->loc.toChars(); | |
| 3354 char *sj = cj->loc.toChars(); | |
| 3355 | |
| 3356 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3357 error("catch at %s hides catch at %s", sj, si); | |
| 3358 } | |
| 3359 } | |
| 3360 return this; | |
| 3361 } | |
| 3362 | |
| 3363 int TryCatchStatement::hasBreak() | |
| 3364 { | |
| 3365 return FALSE; //TRUE; | |
| 3366 } | |
| 3367 | |
| 3368 int TryCatchStatement::usesEH() | |
| 3369 { | |
| 3370 return TRUE; | |
| 3371 } | |
| 3372 | |
| 336 | 3373 int TryCatchStatement::blockExit() |
| 3374 { int result; | |
| 3375 | |
| 3376 assert(body); | |
| 3377 result = body->blockExit(); | |
| 3378 | |
| 3379 for (size_t i = 0; i < catches->dim; i++) | |
| 3380 { | |
| 3381 Catch *c = (Catch *)catches->data[i]; | |
| 3382 result |= c->blockExit(); | |
| 3383 } | |
| 3384 return result; | |
| 3385 } | |
| 3386 | |
| 159 | 3387 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3388 { | |
| 3389 buf->writestring("try"); | |
| 3390 buf->writenl(); | |
| 3391 if (body) | |
| 3392 body->toCBuffer(buf, hgs); | |
| 336 | 3393 for (size_t i = 0; i < catches->dim; i++) |
| 159 | 3394 { |
| 3395 Catch *c = (Catch *)catches->data[i]; | |
| 3396 c->toCBuffer(buf, hgs); | |
| 3397 } | |
| 3398 } | |
| 3399 | |
| 3400 /******************************** Catch ***************************/ | |
| 3401 | |
| 3402 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 3403 { | |
| 3404 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 3405 this->loc = loc; | |
| 3406 this->type = t; | |
| 3407 this->ident = id; | |
| 3408 this->handler = handler; | |
| 3409 var = NULL; | |
| 3410 } | |
| 3411 | |
| 3412 Catch *Catch::syntaxCopy() | |
| 3413 { | |
| 3414 Catch *c = new Catch(loc, | |
| 3415 (type ? type->syntaxCopy() : NULL), | |
| 3416 ident, | |
| 3417 (handler ? handler->syntaxCopy() : NULL)); | |
| 3418 return c; | |
| 3419 } | |
| 3420 | |
| 3421 void Catch::semantic(Scope *sc) | |
| 3422 { ScopeDsymbol *sym; | |
| 3423 | |
| 3424 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 3425 | |
| 3426 #ifndef IN_GCC | |
|
1141
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parents:
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diff
changeset
|
3427 if (sc->enclosingFinally) |
| 159 | 3428 { |
| 3429 /* This is because the _d_local_unwind() gets the stack munged | |
| 3430 * up on this. The workaround is to place any try-catches into | |
| 3431 * a separate function, and call that. | |
| 3432 * To fix, have the compiler automatically convert the finally | |
| 3433 * body into a nested function. | |
| 3434 */ | |
| 3435 error(loc, "cannot put catch statement inside finally block"); | |
| 3436 } | |
| 3437 #endif | |
| 3438 | |
| 3439 sym = new ScopeDsymbol(); | |
| 3440 sym->parent = sc->scopesym; | |
| 3441 sc = sc->push(sym); | |
| 3442 | |
| 3443 if (!type) | |
| 3444 type = new TypeIdentifier(0, Id::Object); | |
| 3445 type = type->semantic(loc, sc); | |
| 3446 if (!type->toBasetype()->isClassHandle()) | |
| 3447 error("can only catch class objects, not '%s'", type->toChars()); | |
| 3448 else if (ident) | |
| 3449 { | |
| 3450 var = new VarDeclaration(loc, type, ident, NULL); | |
| 3451 var->parent = sc->parent; | |
| 3452 sc->insert(var); | |
| 3453 } | |
| 3454 handler = handler->semantic(sc); | |
| 3455 | |
| 3456 sc->pop(); | |
| 3457 } | |
| 3458 | |
| 336 | 3459 int Catch::blockExit() |
| 3460 { | |
| 3461 return handler ? handler->blockExit() : BEfallthru; | |
| 3462 } | |
| 3463 | |
| 159 | 3464 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3465 { | |
| 3466 buf->writestring("catch"); | |
| 3467 if (type) | |
| 3468 { buf->writebyte('('); | |
| 3469 type->toCBuffer(buf, ident, hgs); | |
| 3470 buf->writebyte(')'); | |
| 3471 } | |
| 3472 buf->writenl(); | |
| 3473 buf->writebyte('{'); | |
| 3474 buf->writenl(); | |
| 336 | 3475 if (handler) |
| 3476 handler->toCBuffer(buf, hgs); | |
| 159 | 3477 buf->writebyte('}'); |
| 3478 buf->writenl(); | |
| 3479 } | |
| 3480 | |
| 3481 /****************************** TryFinallyStatement ***************************/ | |
| 3482 | |
| 3483 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 3484 : Statement(loc) | |
| 3485 { | |
| 3486 this->body = body; | |
| 3487 this->finalbody = finalbody; | |
| 3488 } | |
| 3489 | |
| 3490 Statement *TryFinallyStatement::syntaxCopy() | |
| 3491 { | |
| 3492 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 3493 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 3494 return s; | |
| 3495 } | |
| 3496 | |
| 3497 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 3498 { | |
| 3499 //printf("TryFinallyStatement::semantic()\n"); | |
| 3500 | |
|
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|
3501 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
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diff
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|
3502 sc->enclosingScopeExit = this; |
| 159 | 3503 body = body->semantic(sc); |
|
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diff
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|
3504 sc->enclosingScopeExit = oldScopeExit; |
| 159 | 3505 |
| 3506 sc = sc->push(); | |
|
1141
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diff
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|
3507 sc->enclosingFinally = this; |
| 159 | 3508 sc->sbreak = NULL; |
| 3509 sc->scontinue = NULL; // no break or continue out of finally block | |
| 3510 finalbody = finalbody->semantic(sc); | |
| 3511 sc->pop(); | |
| 3512 return this; | |
| 3513 } | |
| 3514 | |
| 3515 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3516 { | |
| 3517 buf->printf("try\n{\n"); | |
| 3518 body->toCBuffer(buf, hgs); | |
| 3519 buf->printf("}\nfinally\n{\n"); | |
| 3520 finalbody->toCBuffer(buf, hgs); | |
| 3521 buf->writeByte('}'); | |
| 3522 buf->writenl(); | |
| 3523 } | |
| 3524 | |
| 3525 int TryFinallyStatement::hasBreak() | |
| 3526 { | |
| 3527 return FALSE; //TRUE; | |
| 3528 } | |
| 3529 | |
| 3530 int TryFinallyStatement::hasContinue() | |
| 3531 { | |
| 3532 return FALSE; //TRUE; | |
| 3533 } | |
| 3534 | |
| 3535 int TryFinallyStatement::usesEH() | |
| 3536 { | |
| 3537 return TRUE; | |
| 3538 } | |
| 3539 | |
| 336 | 3540 int TryFinallyStatement::blockExit() |
| 3541 { | |
|
875
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846
diff
changeset
|
3542 if (body) |
|
330f999ade44
Merged DMD 1.038
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parents:
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diff
changeset
|
3543 return body->blockExit(); |
|
330f999ade44
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parents:
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diff
changeset
|
3544 return BEfallthru; |
| 336 | 3545 } |
| 3546 | |
| 159 | 3547 |
| 3548 /****************************** OnScopeStatement ***************************/ | |
| 3549 | |
| 3550 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 3551 : Statement(loc) | |
| 3552 { | |
| 3553 this->tok = tok; | |
| 3554 this->statement = statement; | |
| 3555 } | |
| 3556 | |
| 3557 Statement *OnScopeStatement::syntaxCopy() | |
| 3558 { | |
| 3559 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 3560 tok, statement->syntaxCopy()); | |
| 3561 return s; | |
| 3562 } | |
| 3563 | |
| 3564 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 3565 { | |
| 3566 /* semantic is called on results of scopeCode() */ | |
| 3567 return this; | |
| 3568 } | |
| 3569 | |
| 336 | 3570 int OnScopeStatement::blockExit() |
| 3571 { // At this point, this statement is just an empty placeholder | |
| 3572 return BEfallthru; | |
| 3573 } | |
| 3574 | |
| 159 | 3575 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3576 { | |
| 3577 buf->writestring(Token::toChars(tok)); | |
| 3578 buf->writebyte(' '); | |
| 3579 statement->toCBuffer(buf, hgs); | |
| 3580 } | |
| 3581 | |
| 3582 int OnScopeStatement::usesEH() | |
| 3583 { | |
| 3584 return (tok != TOKon_scope_success); | |
| 3585 } | |
| 3586 | |
| 3587 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 3588 { | |
| 3589 //printf("OnScopeStatement::scopeCode()\n"); | |
| 3590 //print(); | |
| 3591 *sentry = NULL; | |
| 3592 *sexception = NULL; | |
| 3593 *sfinally = NULL; | |
| 3594 switch (tok) | |
| 3595 { | |
| 3596 case TOKon_scope_exit: | |
| 3597 *sfinally = statement; | |
| 3598 break; | |
| 3599 | |
| 3600 case TOKon_scope_failure: | |
| 3601 *sexception = statement; | |
| 3602 break; | |
| 3603 | |
| 3604 case TOKon_scope_success: | |
| 3605 { | |
| 3606 /* Create: | |
| 3607 * sentry: int x = 0; | |
| 3608 * sexception: x = 1; | |
| 3609 * sfinally: if (!x) statement; | |
| 3610 */ | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3611 Identifier *id = Lexer::uniqueId("__os"); |
| 159 | 3612 |
| 3613 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 3614 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 3615 *sentry = new DeclarationStatement(loc, v); | |
| 3616 | |
| 3617 Expression *e = new IntegerExp(1); | |
| 3618 e = new AssignExp(0, new VarExp(0, v), e); | |
| 3619 *sexception = new ExpStatement(0, e); | |
| 3620 | |
| 3621 e = new VarExp(0, v); | |
| 3622 e = new NotExp(0, e); | |
| 3623 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 3624 | |
| 3625 break; | |
| 3626 } | |
| 3627 | |
| 3628 default: | |
| 3629 assert(0); | |
| 3630 } | |
| 3631 } | |
| 3632 | |
| 3633 /******************************** ThrowStatement ***************************/ | |
| 3634 | |
| 3635 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 3636 : Statement(loc) | |
| 3637 { | |
| 3638 this->exp = exp; | |
| 3639 } | |
| 3640 | |
| 3641 Statement *ThrowStatement::syntaxCopy() | |
| 3642 { | |
| 3643 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 3644 return s; | |
| 3645 } | |
| 3646 | |
| 3647 Statement *ThrowStatement::semantic(Scope *sc) | |
| 3648 { | |
| 3649 //printf("ThrowStatement::semantic()\n"); | |
| 3650 | |
| 3651 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3652 fd->hasReturnExp |= 2; | |
| 3653 | |
| 3654 if (sc->incontract) | |
| 3655 error("Throw statements cannot be in contracts"); | |
| 3656 exp = exp->semantic(sc); | |
| 3657 exp = resolveProperties(sc, exp); | |
| 3658 if (!exp->type->toBasetype()->isClassHandle()) | |
| 3659 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 3660 return this; | |
| 3661 } | |
| 3662 | |
| 336 | 3663 int ThrowStatement::blockExit() |
| 3664 { | |
| 3665 return BEthrow; // obviously | |
| 3666 } | |
| 3667 | |
| 159 | 3668 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3669 { | |
| 3670 buf->printf("throw "); | |
| 3671 exp->toCBuffer(buf, hgs); | |
| 3672 buf->writeByte(';'); | |
| 3673 buf->writenl(); | |
| 3674 } | |
| 3675 | |
| 3676 /******************************** VolatileStatement **************************/ | |
| 3677 | |
| 3678 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 3679 : Statement(loc) | |
| 3680 { | |
| 3681 this->statement = statement; | |
| 3682 } | |
| 3683 | |
| 3684 Statement *VolatileStatement::syntaxCopy() | |
| 3685 { | |
| 3686 VolatileStatement *s = new VolatileStatement(loc, | |
| 3687 statement ? statement->syntaxCopy() : NULL); | |
| 3688 return s; | |
| 3689 } | |
| 3690 | |
| 3691 Statement *VolatileStatement::semantic(Scope *sc) | |
| 3692 { | |
| 309 | 3693 if (statement) |
| 3694 { | |
|
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diff
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|
3695 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
f99a3b393c03
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diff
changeset
|
3696 sc->enclosingScopeExit = this; |
|
f99a3b393c03
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Christian Kamm <kamm incasoftware de>
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diff
changeset
|
3697 statement = statement->semantic(sc); |
|
f99a3b393c03
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Christian Kamm <kamm incasoftware de>
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diff
changeset
|
3698 sc->enclosingScopeExit = oldScopeExit; |
| 309 | 3699 } |
| 159 | 3700 return this; |
| 3701 } | |
| 3702 | |
| 3703 Statements *VolatileStatement::flatten(Scope *sc) | |
| 3704 { | |
| 3705 Statements *a; | |
| 3706 | |
| 3707 a = statement ? statement->flatten(sc) : NULL; | |
| 3708 if (a) | |
| 3709 { for (int i = 0; i < a->dim; i++) | |
| 3710 { Statement *s = (Statement *)a->data[i]; | |
| 3711 | |
| 3712 s = new VolatileStatement(loc, s); | |
| 3713 a->data[i] = s; | |
| 3714 } | |
| 3715 } | |
| 3716 | |
| 3717 return a; | |
| 3718 } | |
| 3719 | |
| 336 | 3720 int VolatileStatement::blockExit() |
| 3721 { | |
| 3722 return statement ? statement->blockExit() : BEfallthru; | |
| 3723 } | |
| 3724 | |
| 159 | 3725 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3726 { | |
| 3727 buf->writestring("volatile"); | |
| 3728 if (statement) | |
| 3729 { if (statement->isScopeStatement()) | |
| 3730 buf->writenl(); | |
| 3731 else | |
| 3732 buf->writebyte(' '); | |
| 3733 statement->toCBuffer(buf, hgs); | |
| 3734 } | |
| 3735 } | |
| 3736 | |
| 3737 | |
| 3738 /******************************** GotoStatement ***************************/ | |
| 3739 | |
| 3740 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 3741 : Statement(loc) | |
| 3742 { | |
| 3743 this->ident = ident; | |
| 3744 this->label = NULL; | |
|
1141
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diff
changeset
|
3745 this->enclosingFinally = NULL; |
|
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|
3746 this->enclosingScopeExit = NULL; |
| 159 | 3747 } |
| 3748 | |
| 3749 Statement *GotoStatement::syntaxCopy() | |
| 3750 { | |
| 3751 GotoStatement *s = new GotoStatement(loc, ident); | |
| 3752 return s; | |
| 3753 } | |
| 3754 | |
| 3755 Statement *GotoStatement::semantic(Scope *sc) | |
| 3756 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3757 | |
| 3758 //printf("GotoStatement::semantic()\n"); | |
|
1141
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|
3759 enclosingFinally = sc->enclosingFinally; |
|
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|
3760 enclosingScopeExit = sc->enclosingScopeExit; |
|
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diff
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|
3761 |
| 159 | 3762 label = fd->searchLabel(ident); |
| 3763 if (!label->statement && sc->fes) | |
| 3764 { | |
| 3765 /* Either the goto label is forward referenced or it | |
| 3766 * is in the function that the enclosing foreach is in. | |
| 3767 * Can't know yet, so wrap the goto in a compound statement | |
| 3768 * so we can patch it later, and add it to a 'look at this later' | |
| 3769 * list. | |
| 3770 */ | |
| 3771 Statements *a = new Statements(); | |
| 3772 Statement *s; | |
| 3773 | |
| 3774 a->push(this); | |
| 3775 s = new CompoundStatement(loc, a); | |
| 3776 sc->fes->gotos.push(s); // 'look at this later' list | |
| 3777 return s; | |
| 3778 } | |
|
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|
3779 if (label->statement && label->statement->enclosingFinally != sc->enclosingFinally) |
| 159 | 3780 error("cannot goto in or out of finally block"); |
| 3781 return this; | |
| 3782 } | |
| 3783 | |
| 336 | 3784 int GotoStatement::blockExit() |
| 3785 { | |
| 3786 //printf("GotoStatement::blockExit(%p)\n", this); | |
| 3787 return BEgoto; | |
| 3788 } | |
| 3789 | |
| 159 | 3790 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3791 { | |
| 3792 buf->writestring("goto "); | |
| 3793 buf->writestring(ident->toChars()); | |
| 3794 buf->writebyte(';'); | |
| 3795 buf->writenl(); | |
| 3796 } | |
| 3797 | |
| 3798 /******************************** LabelStatement ***************************/ | |
| 3799 | |
| 3800 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 3801 : Statement(loc) | |
| 3802 { | |
| 3803 this->ident = ident; | |
| 3804 this->statement = statement; | |
|
1141
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|
3805 this->enclosingFinally = NULL; |
|
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|
3806 this->enclosingScopeExit = NULL; |
| 159 | 3807 this->lblock = NULL; |
| 3808 this->isReturnLabel = 0; | |
|
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|
3809 this->asmLabel = false; |
| 159 | 3810 } |
| 3811 | |
| 3812 Statement *LabelStatement::syntaxCopy() | |
| 3813 { | |
| 3814 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 3815 return s; | |
| 3816 } | |
| 3817 | |
| 3818 Statement *LabelStatement::semantic(Scope *sc) | |
| 3819 { LabelDsymbol *ls; | |
| 3820 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3821 | |
| 3822 //printf("LabelStatement::semantic()\n"); | |
| 3823 ls = fd->searchLabel(ident); | |
| 3824 if (ls->statement) | |
| 3825 error("Label '%s' already defined", ls->toChars()); | |
| 3826 else | |
| 3827 ls->statement = this; | |
|
1141
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|
3828 |
|
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|
3829 enclosingFinally = sc->enclosingFinally; |
|
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|
3830 enclosingScopeExit = sc->enclosingScopeExit; |
|
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|
3831 |
| 159 | 3832 sc = sc->push(); |
| 3833 sc->scopesym = sc->enclosing->scopesym; | |
| 3834 sc->callSuper |= CSXlabel; | |
| 3835 sc->slabel = this; | |
| 3836 if (statement) | |
| 3837 statement = statement->semantic(sc); | |
| 3838 sc->pop(); | |
|
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|
3839 |
|
664
eef8ac26c66c
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|
3840 // LDC put in labmap |
|
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|
3841 fd->labmap[ident->toChars()] = this; |
|
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|
3842 |
| 159 | 3843 return this; |
| 3844 } | |
| 3845 | |
| 3846 Statements *LabelStatement::flatten(Scope *sc) | |
| 3847 { | |
| 3848 Statements *a = NULL; | |
| 3849 | |
| 3850 if (statement) | |
| 3851 { | |
| 3852 a = statement->flatten(sc); | |
| 3853 if (a) | |
| 3854 { | |
| 3855 if (!a->dim) | |
| 3856 { | |
| 3857 a->push(new ExpStatement(loc, NULL)); | |
| 3858 } | |
| 3859 Statement *s = (Statement *)a->data[0]; | |
| 3860 | |
| 3861 s = new LabelStatement(loc, ident, s); | |
| 3862 a->data[0] = s; | |
| 3863 } | |
| 3864 } | |
| 3865 | |
| 3866 return a; | |
| 3867 } | |
| 3868 | |
| 3869 | |
| 3870 int LabelStatement::usesEH() | |
| 3871 { | |
| 3872 return statement ? statement->usesEH() : FALSE; | |
| 3873 } | |
| 3874 | |
| 336 | 3875 int LabelStatement::blockExit() |
| 3876 { | |
| 3877 //printf("LabelStatement::blockExit(%p)\n", this); | |
| 3878 return statement ? statement->blockExit() : BEfallthru; | |
| 3879 } | |
| 3880 | |
| 159 | 3881 int LabelStatement::comeFrom() |
| 3882 { | |
| 3883 //printf("LabelStatement::comeFrom()\n"); | |
| 3884 return TRUE; | |
| 3885 } | |
| 3886 | |
| 3887 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3888 { | |
| 3889 buf->writestring(ident->toChars()); | |
| 3890 buf->writebyte(':'); | |
| 3891 buf->writenl(); | |
| 3892 if (statement) | |
| 3893 statement->toCBuffer(buf, hgs); | |
| 3894 } | |
| 3895 | |
| 3896 | |
| 3897 /******************************** LabelDsymbol ***************************/ | |
| 3898 | |
| 3899 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 3900 : Dsymbol(ident) | |
| 3901 { | |
| 3902 statement = NULL; | |
| 3903 } | |
| 3904 | |
| 3905 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 3906 { | |
| 3907 return this; | |
| 3908 } |