Mercurial > projects > ldc
annotate dmd/statement.c @ 1137:45d73f0a9b43
Automated merge with http://hg.dsource.org/projects/ldc
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Tue, 24 Mar 2009 14:34:16 +0100 |
| parents | eeb8b95ea92e |
| children | f99a3b393c03 |
| 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; | |
| 309 | 585 enclosinghandler = NULL; |
| 159 | 586 } |
| 587 | |
| 588 Statement *UnrolledLoopStatement::syntaxCopy() | |
| 589 { | |
| 590 Statements *a = new Statements(); | |
| 591 a->setDim(statements->dim); | |
| 592 for (size_t i = 0; i < statements->dim; i++) | |
| 593 { Statement *s = (Statement *)statements->data[i]; | |
| 594 if (s) | |
| 595 s = s->syntaxCopy(); | |
| 596 a->data[i] = s; | |
| 597 } | |
| 598 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
| 599 return cs; | |
| 600 } | |
| 601 | |
| 602 | |
| 603 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
| 604 { | |
| 605 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 606 | |
| 309 | 607 enclosinghandler = sc->tfOfTry; |
| 159 | 608 |
| 609 sc->noctor++; | |
| 610 Scope *scd = sc->push(); | |
| 611 scd->sbreak = this; | |
| 612 scd->scontinue = this; | |
| 613 | |
| 614 for (size_t i = 0; i < statements->dim; i++) | |
| 615 { | |
| 616 Statement *s = (Statement *) statements->data[i]; | |
| 617 if (s) | |
| 618 { | |
| 619 s = s->semantic(scd); | |
| 620 statements->data[i] = s; | |
| 621 } | |
| 622 } | |
| 623 | |
| 624 scd->pop(); | |
| 625 sc->noctor--; | |
| 626 return this; | |
| 627 } | |
| 628 | |
| 629 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 630 { | |
| 631 buf->writestring("unrolled {"); | |
| 632 buf->writenl(); | |
| 633 | |
| 634 for (size_t i = 0; i < statements->dim; i++) | |
| 635 { Statement *s; | |
| 636 | |
| 637 s = (Statement *) statements->data[i]; | |
| 638 if (s) | |
| 639 s->toCBuffer(buf, hgs); | |
| 640 } | |
| 641 | |
| 642 buf->writeByte('}'); | |
| 643 buf->writenl(); | |
| 644 } | |
| 645 | |
| 646 int UnrolledLoopStatement::hasBreak() | |
| 647 { | |
| 648 return TRUE; | |
| 649 } | |
| 650 | |
| 651 int UnrolledLoopStatement::hasContinue() | |
| 652 { | |
| 653 return TRUE; | |
| 654 } | |
| 655 | |
| 656 int UnrolledLoopStatement::usesEH() | |
| 657 { | |
| 658 for (size_t i = 0; i < statements->dim; i++) | |
| 336 | 659 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 660 if (s && s->usesEH()) |
| 661 return TRUE; | |
| 662 } | |
| 663 return FALSE; | |
| 664 } | |
| 665 | |
| 336 | 666 int UnrolledLoopStatement::blockExit() |
| 667 { | |
| 668 int result = BEfallthru; | |
| 669 for (size_t i = 0; i < statements->dim; i++) | |
| 670 { Statement *s = (Statement *) statements->data[i]; | |
| 671 if (s) | |
| 672 { | |
| 673 int r = s->blockExit(); | |
| 674 result |= r & ~(BEbreak | BEcontinue); | |
| 675 } | |
| 676 } | |
| 677 return result; | |
| 678 } | |
| 679 | |
| 159 | 680 int UnrolledLoopStatement::comeFrom() |
| 681 { int comefrom = FALSE; | |
| 682 | |
| 683 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
| 684 for (size_t i = 0; i < statements->dim; i++) | |
| 685 { Statement *s = (Statement *)statements->data[i]; | |
| 686 | |
| 687 if (!s) | |
| 688 continue; | |
| 689 | |
| 690 comefrom |= s->comeFrom(); | |
| 691 } | |
| 692 return comefrom; | |
| 693 } | |
| 694 | |
| 695 | |
| 696 /******************************** ScopeStatement ***************************/ | |
| 697 | |
| 698 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
| 699 : Statement(loc) | |
| 700 { | |
| 701 this->statement = s; | |
| 702 } | |
| 703 | |
| 704 Statement *ScopeStatement::syntaxCopy() | |
| 705 { | |
| 706 Statement *s; | |
| 707 | |
| 708 s = statement ? statement->syntaxCopy() : NULL; | |
| 709 s = new ScopeStatement(loc, s); | |
| 710 return s; | |
| 711 } | |
| 712 | |
| 713 | |
| 714 Statement *ScopeStatement::semantic(Scope *sc) | |
| 715 { ScopeDsymbol *sym; | |
| 716 | |
| 717 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
| 718 if (statement) | |
| 719 { Statements *a; | |
| 720 | |
| 721 sym = new ScopeDsymbol(); | |
| 722 sym->parent = sc->scopesym; | |
| 723 sc = sc->push(sym); | |
| 724 | |
| 725 a = statement->flatten(sc); | |
| 726 if (a) | |
| 727 { | |
| 728 statement = new CompoundStatement(loc, a); | |
| 729 } | |
| 730 | |
| 731 statement = statement->semantic(sc); | |
| 732 if (statement) | |
| 733 { | |
| 734 Statement *sentry; | |
| 735 Statement *sexception; | |
| 736 Statement *sfinally; | |
| 737 | |
| 738 statement->scopeCode(&sentry, &sexception, &sfinally); | |
| 739 if (sfinally) | |
| 740 { | |
| 741 //printf("adding sfinally\n"); | |
| 742 statement = new CompoundStatement(loc, statement, sfinally); | |
| 743 } | |
| 744 } | |
| 745 | |
| 746 sc->pop(); | |
| 747 } | |
| 748 return this; | |
| 749 } | |
| 750 | |
| 751 int ScopeStatement::hasBreak() | |
| 752 { | |
| 753 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
| 754 return statement ? statement->hasBreak() : FALSE; | |
| 755 } | |
| 756 | |
| 757 int ScopeStatement::hasContinue() | |
| 758 { | |
| 759 return statement ? statement->hasContinue() : FALSE; | |
| 760 } | |
| 761 | |
| 762 int ScopeStatement::usesEH() | |
| 763 { | |
| 764 return statement ? statement->usesEH() : FALSE; | |
| 765 } | |
| 766 | |
| 336 | 767 int ScopeStatement::blockExit() |
| 768 { | |
| 769 //printf("ScopeStatement::blockExit(%p)\n", statement); | |
| 770 return statement ? statement->blockExit() : BEfallthru; | |
| 771 } | |
| 772 | |
| 159 | 773 int ScopeStatement::comeFrom() |
| 774 { | |
| 775 //printf("ScopeStatement::comeFrom()\n"); | |
| 776 return statement ? statement->comeFrom() : FALSE; | |
| 777 } | |
| 778 | |
| 779 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 780 { | |
| 781 buf->writeByte('{'); | |
| 782 buf->writenl(); | |
| 783 | |
| 784 if (statement) | |
| 785 statement->toCBuffer(buf, hgs); | |
| 786 | |
| 787 buf->writeByte('}'); | |
| 788 buf->writenl(); | |
| 789 } | |
| 790 | |
| 791 /******************************** WhileStatement ***************************/ | |
| 792 | |
| 793 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
| 794 : Statement(loc) | |
| 795 { | |
| 796 condition = c; | |
| 797 body = b; | |
| 309 | 798 enclosinghandler = NULL; |
| 159 | 799 } |
| 800 | |
| 801 Statement *WhileStatement::syntaxCopy() | |
| 802 { | |
| 803 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 804 return s; | |
| 805 } | |
| 806 | |
| 807 | |
| 808 Statement *WhileStatement::semantic(Scope *sc) | |
| 809 { | |
| 810 #if 0 | |
| 811 if (condition->op == TOKmatch) | |
| 812 { | |
| 813 /* Rewrite while (condition) body as: | |
| 814 * if (condition) | |
| 815 * do | |
| 816 * body | |
| 817 * while ((_match = _match.opNext), _match); | |
| 818 */ | |
| 819 | |
| 820 Expression *ew = new IdentifierExp(0, Id::_match); | |
| 821 ew = new DotIdExp(0, ew, Id::next); | |
| 822 ew = new AssignExp(0, new IdentifierExp(0, Id::_match), ew); | |
| 823 ////ew = new EqualExp(TOKnotequal, 0, ew, new NullExp(0)); | |
| 824 Expression *ev = new IdentifierExp(0, Id::_match); | |
| 825 //ev = new CastExp(0, ev, Type::tvoidptr); | |
| 826 ew = new CommaExp(0, ew, ev); | |
| 827 Statement *sw = new DoStatement(loc, body, ew); | |
| 828 Statement *si = new IfStatement(loc, condition, sw, NULL); | |
| 829 return si->semantic(sc); | |
| 830 } | |
| 831 #endif | |
| 832 | |
| 309 | 833 enclosinghandler = sc->tfOfTry; |
| 159 | 834 |
| 835 condition = condition->semantic(sc); | |
| 836 condition = resolveProperties(sc, condition); | |
| 837 condition = condition->optimize(WANTvalue); | |
| 838 condition = condition->checkToBoolean(); | |
| 839 | |
| 840 sc->noctor++; | |
| 841 | |
| 842 Scope *scd = sc->push(); | |
| 843 scd->sbreak = this; | |
| 844 scd->scontinue = this; | |
| 845 if (body) | |
| 846 body = body->semantic(scd); | |
| 847 scd->pop(); | |
| 848 | |
| 849 sc->noctor--; | |
| 850 | |
| 851 return this; | |
| 852 } | |
| 853 | |
| 854 int WhileStatement::hasBreak() | |
| 855 { | |
| 856 return TRUE; | |
| 857 } | |
| 858 | |
| 859 int WhileStatement::hasContinue() | |
| 860 { | |
| 861 return TRUE; | |
| 862 } | |
| 863 | |
| 864 int WhileStatement::usesEH() | |
| 865 { | |
| 866 return body ? body->usesEH() : 0; | |
| 867 } | |
| 868 | |
| 336 | 869 int WhileStatement::blockExit() |
| 870 { | |
| 871 //printf("WhileStatement::blockExit(%p)\n", this); | |
| 872 | |
| 873 int result = BEnone; | |
| 874 if (condition->canThrow()) | |
| 875 result |= BEthrow; | |
| 876 if (condition->isBool(TRUE)) | |
| 877 { | |
| 878 if (body) | |
| 879 { result |= body->blockExit(); | |
| 880 if (result & BEbreak) | |
| 881 result |= BEfallthru; | |
| 882 } | |
| 883 } | |
| 884 else if (condition->isBool(FALSE)) | |
| 885 { | |
| 886 result |= BEfallthru; | |
| 887 } | |
| 888 else | |
| 889 { | |
| 890 if (body) | |
| 891 result |= body->blockExit(); | |
| 892 result |= BEfallthru; | |
| 893 } | |
| 894 result &= ~(BEbreak | BEcontinue); | |
| 895 return result; | |
| 896 } | |
| 897 | |
| 159 | 898 int WhileStatement::comeFrom() |
| 899 { | |
| 900 if (body) | |
| 901 return body->comeFrom(); | |
| 902 return FALSE; | |
| 903 } | |
| 904 | |
| 905 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 906 { | |
| 907 buf->writestring("while ("); | |
| 908 condition->toCBuffer(buf, hgs); | |
| 909 buf->writebyte(')'); | |
| 910 buf->writenl(); | |
| 911 if (body) | |
| 912 body->toCBuffer(buf, hgs); | |
| 913 } | |
| 914 | |
| 915 /******************************** DoStatement ***************************/ | |
| 916 | |
| 917 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
| 918 : Statement(loc) | |
| 919 { | |
| 920 body = b; | |
| 921 condition = c; | |
| 309 | 922 enclosinghandler = NULL; |
| 159 | 923 } |
| 924 | |
| 925 Statement *DoStatement::syntaxCopy() | |
| 926 { | |
| 927 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
| 928 return s; | |
| 929 } | |
| 930 | |
| 931 | |
| 932 Statement *DoStatement::semantic(Scope *sc) | |
| 933 { | |
| 309 | 934 enclosinghandler = sc->tfOfTry; |
| 159 | 935 |
| 936 sc->noctor++; | |
| 937 if (body) | |
| 938 body = body->semanticScope(sc, this, this); | |
| 939 sc->noctor--; | |
| 940 condition = condition->semantic(sc); | |
| 941 condition = resolveProperties(sc, condition); | |
| 942 condition = condition->optimize(WANTvalue); | |
| 943 | |
| 944 condition = condition->checkToBoolean(); | |
| 945 | |
| 946 return this; | |
| 947 } | |
| 948 | |
| 949 int DoStatement::hasBreak() | |
| 950 { | |
| 951 return TRUE; | |
| 952 } | |
| 953 | |
| 954 int DoStatement::hasContinue() | |
| 955 { | |
| 956 return TRUE; | |
| 957 } | |
| 958 | |
| 959 int DoStatement::usesEH() | |
| 960 { | |
| 961 return body ? body->usesEH() : 0; | |
| 962 } | |
| 963 | |
| 336 | 964 int DoStatement::blockExit() |
| 965 { int result; | |
| 966 | |
| 967 if (body) | |
| 968 { result = body->blockExit(); | |
| 969 if (result == BEbreak) | |
| 970 return BEfallthru; | |
| 971 if (result & BEcontinue) | |
| 972 result |= BEfallthru; | |
| 973 } | |
| 974 else | |
| 975 result = BEfallthru; | |
| 976 if (result & BEfallthru) | |
| 977 { if (condition->canThrow()) | |
| 978 result |= BEthrow; | |
| 979 if (!(result & BEbreak) && condition->isBool(TRUE)) | |
| 980 result &= ~BEfallthru; | |
| 981 } | |
| 982 result &= ~(BEbreak | BEcontinue); | |
| 983 return result; | |
| 984 } | |
| 985 | |
| 159 | 986 int DoStatement::comeFrom() |
| 987 { | |
| 988 if (body) | |
| 989 return body->comeFrom(); | |
| 990 return FALSE; | |
| 991 } | |
| 992 | |
| 993 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 994 { | |
| 995 buf->writestring("do"); | |
| 996 buf->writenl(); | |
| 997 if (body) | |
| 998 body->toCBuffer(buf, hgs); | |
| 999 buf->writestring("while ("); | |
| 1000 condition->toCBuffer(buf, hgs); | |
| 1001 buf->writebyte(')'); | |
| 1002 } | |
| 1003 | |
| 1004 /******************************** ForStatement ***************************/ | |
| 1005 | |
| 1006 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
| 1007 : Statement(loc) | |
| 1008 { | |
| 1009 this->init = init; | |
| 1010 this->condition = condition; | |
| 1011 this->increment = increment; | |
| 1012 this->body = body; | |
| 309 | 1013 this->enclosinghandler = NULL; |
| 159 | 1014 } |
| 1015 | |
| 1016 Statement *ForStatement::syntaxCopy() | |
| 1017 { | |
| 1018 Statement *i = NULL; | |
| 1019 if (init) | |
| 1020 i = init->syntaxCopy(); | |
| 1021 Expression *c = NULL; | |
| 1022 if (condition) | |
| 1023 c = condition->syntaxCopy(); | |
| 1024 Expression *inc = NULL; | |
| 1025 if (increment) | |
| 1026 inc = increment->syntaxCopy(); | |
| 1027 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
| 1028 return s; | |
| 1029 } | |
| 1030 | |
| 1031 Statement *ForStatement::semantic(Scope *sc) | |
| 1032 { | |
| 309 | 1033 enclosinghandler = sc->tfOfTry; |
| 159 | 1034 |
| 1035 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1036 sym->parent = sc->scopesym; | |
| 1037 sc = sc->push(sym); | |
| 1038 if (init) | |
| 1039 init = init->semantic(sc); | |
|
1103
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parents:
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diff
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|
1040 #if 0 |
| 159 | 1041 if (!condition) |
| 1042 // Use a default value | |
| 1043 condition = new IntegerExp(loc, 1, Type::tboolean); | |
|
1103
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parents:
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diff
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|
1044 #endif |
| 159 | 1045 sc->noctor++; |
|
846
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changeset
|
1046 if (condition) |
|
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diff
changeset
|
1047 { |
|
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changeset
|
1048 condition = condition->semantic(sc); |
|
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|
1049 condition = resolveProperties(sc, condition); |
|
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|
1050 condition = condition->optimize(WANTvalue); |
|
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parents:
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|
1051 condition = condition->checkToBoolean(); |
|
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parents:
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|
1052 } |
| 159 | 1053 if (increment) |
|
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changeset
|
1054 { increment = increment->semantic(sc); |
|
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parents:
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|
1055 increment = resolveProperties(sc, increment); |
|
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|
1056 } |
| 159 | 1057 |
| 1058 sc->sbreak = this; | |
| 1059 sc->scontinue = this; | |
| 1060 body = body->semantic(sc); | |
| 1061 sc->noctor--; | |
| 1062 | |
| 1063 sc->pop(); | |
| 1064 return this; | |
| 1065 } | |
| 1066 | |
| 1067 void ForStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 1068 { | |
| 1069 //printf("ForStatement::scopeCode()\n"); | |
| 1070 //print(); | |
| 1071 if (init) | |
| 1072 init->scopeCode(sentry, sexception, sfinally); | |
| 1073 else | |
| 1074 Statement::scopeCode(sentry, sexception, sfinally); | |
| 1075 } | |
| 1076 | |
| 1077 int ForStatement::hasBreak() | |
| 1078 { | |
| 1079 //printf("ForStatement::hasBreak()\n"); | |
| 1080 return TRUE; | |
| 1081 } | |
| 1082 | |
| 1083 int ForStatement::hasContinue() | |
| 1084 { | |
| 1085 return TRUE; | |
| 1086 } | |
| 1087 | |
| 1088 int ForStatement::usesEH() | |
| 1089 { | |
| 1090 return (init && init->usesEH()) || body->usesEH(); | |
| 1091 } | |
| 1092 | |
| 336 | 1093 int ForStatement::blockExit() |
| 1094 { int result = BEfallthru; | |
| 1095 | |
| 1096 if (init) | |
| 1097 { result = init->blockExit(); | |
| 1098 if (!(result & BEfallthru)) | |
| 1099 return result; | |
| 1100 } | |
| 1101 if (condition) | |
| 1102 { if (condition->canThrow()) | |
| 1103 result |= BEthrow; | |
| 1104 } | |
| 1105 else | |
| 1106 result &= ~BEfallthru; // the body must do the exiting | |
| 1107 if (body) | |
| 1108 { int r = body->blockExit(); | |
|
1103
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parents:
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|
1109 if (r & (BEbreak | BEgoto)) |
| 336 | 1110 result |= BEfallthru; |
|
1103
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- Updated to DMD frontend 1.041.
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parents:
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diff
changeset
|
1111 result |= r & ~(BEfallthru | BEbreak | BEcontinue); |
| 336 | 1112 } |
| 1113 if (increment && increment->canThrow()) | |
| 1114 result |= BEthrow; | |
| 1115 return result; | |
| 1116 } | |
| 1117 | |
| 159 | 1118 int ForStatement::comeFrom() |
| 1119 { | |
| 1120 //printf("ForStatement::comeFrom()\n"); | |
| 1121 if (body) | |
| 1122 { int result = body->comeFrom(); | |
| 1123 //printf("result = %d\n", result); | |
| 1124 return result; | |
| 1125 } | |
| 1126 return FALSE; | |
| 1127 } | |
| 1128 | |
| 1129 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1130 { | |
| 1131 buf->writestring("for ("); | |
| 1132 if (init) | |
| 1133 { | |
| 1134 hgs->FLinit.init++; | |
| 1135 hgs->FLinit.decl = 0; | |
| 1136 init->toCBuffer(buf, hgs); | |
| 1137 if (hgs->FLinit.decl > 0) | |
| 1138 buf->writebyte(';'); | |
| 1139 hgs->FLinit.decl = 0; | |
| 1140 hgs->FLinit.init--; | |
| 1141 } | |
| 1142 else | |
| 1143 buf->writebyte(';'); | |
| 1144 if (condition) | |
| 1145 { buf->writebyte(' '); | |
| 1146 condition->toCBuffer(buf, hgs); | |
| 1147 } | |
| 1148 buf->writebyte(';'); | |
| 1149 if (increment) | |
| 1150 { buf->writebyte(' '); | |
| 1151 increment->toCBuffer(buf, hgs); | |
| 1152 } | |
| 1153 buf->writebyte(')'); | |
| 1154 buf->writenl(); | |
| 1155 buf->writebyte('{'); | |
| 1156 buf->writenl(); | |
| 1157 body->toCBuffer(buf, hgs); | |
| 1158 buf->writebyte('}'); | |
| 1159 buf->writenl(); | |
| 1160 } | |
| 1161 | |
| 1162 /******************************** ForeachStatement ***************************/ | |
| 1163 | |
| 1164 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Arguments *arguments, | |
| 1165 Expression *aggr, Statement *body) | |
| 1166 : Statement(loc) | |
| 1167 { | |
| 1168 this->op = op; | |
| 1169 this->arguments = arguments; | |
| 1170 this->aggr = aggr; | |
| 1171 this->body = body; | |
| 309 | 1172 this->enclosinghandler = NULL; |
| 159 | 1173 |
| 1174 this->key = NULL; | |
| 1175 this->value = NULL; | |
| 1176 | |
| 1177 this->func = NULL; | |
| 1178 } | |
| 1179 | |
| 1180 Statement *ForeachStatement::syntaxCopy() | |
| 1181 { | |
| 1182 Arguments *args = Argument::arraySyntaxCopy(arguments); | |
| 1183 Expression *exp = aggr->syntaxCopy(); | |
| 1184 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, | |
| 1185 body ? body->syntaxCopy() : NULL); | |
| 1186 return s; | |
| 1187 } | |
| 1188 | |
| 1189 Statement *ForeachStatement::semantic(Scope *sc) | |
| 1190 { | |
| 1191 //printf("ForeachStatement::semantic() %p\n", this); | |
| 1192 ScopeDsymbol *sym; | |
| 1193 Statement *s = this; | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1194 size_t dim = arguments->dim; |
| 159 | 1195 TypeAArray *taa = NULL; |
| 1196 | |
| 1197 Type *tn = NULL; | |
| 1198 Type *tnv = NULL; | |
| 1199 | |
| 309 | 1200 enclosinghandler = sc->tfOfTry; |
| 159 | 1201 |
| 1202 func = sc->func; | |
| 1203 if (func->fes) | |
| 1204 func = func->fes->func; | |
| 1205 | |
| 1206 aggr = aggr->semantic(sc); | |
| 1207 aggr = resolveProperties(sc, aggr); | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1208 aggr = aggr->optimize(WANTvalue); |
| 159 | 1209 if (!aggr->type) |
| 1210 { | |
| 1211 error("invalid foreach aggregate %s", aggr->toChars()); | |
| 1212 return this; | |
| 1213 } | |
| 1214 | |
| 1215 inferApplyArgTypes(op, arguments, aggr); | |
| 1216 | |
| 1217 /* Check for inference errors | |
| 1218 */ | |
| 1219 if (dim != arguments->dim) | |
| 1220 { | |
| 1221 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
| 1222 error("cannot uniquely infer foreach argument types"); | |
| 1223 return this; | |
| 1224 } | |
| 1225 | |
| 1226 Type *tab = aggr->type->toBasetype(); | |
| 1227 | |
| 1228 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
| 1229 { | |
| 1230 if (dim < 1 || dim > 2) | |
| 1231 { | |
| 1232 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
| 1233 return s; | |
| 1234 } | |
| 1235 | |
| 1236 TypeTuple *tuple = (TypeTuple *)tab; | |
| 1237 Statements *statements = new Statements(); | |
| 1238 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
| 1239 size_t n; | |
| 1240 TupleExp *te = NULL; | |
| 1241 if (aggr->op == TOKtuple) // expression tuple | |
| 1242 { te = (TupleExp *)aggr; | |
| 1243 n = te->exps->dim; | |
| 1244 } | |
| 1245 else if (aggr->op == TOKtype) // type tuple | |
| 1246 { | |
| 1247 n = Argument::dim(tuple->arguments); | |
| 1248 } | |
| 1249 else | |
| 1250 assert(0); | |
| 1251 for (size_t j = 0; j < n; j++) | |
| 1252 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
| 1253 Expression *e; | |
| 1254 Type *t; | |
| 1255 if (te) | |
| 1256 e = (Expression *)te->exps->data[k]; | |
| 1257 else | |
| 1258 t = Argument::getNth(tuple->arguments, k)->type; | |
| 1259 Argument *arg = (Argument *)arguments->data[0]; | |
| 1260 Statements *st = new Statements(); | |
| 1261 | |
| 1262 if (dim == 2) | |
| 1263 { // Declare key | |
| 1264 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1265 error("no storage class for key %s", arg->ident->toChars()); | |
| 1266 TY keyty = arg->type->ty; | |
|
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changeset
|
1267 if (global.params.is64bit) |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
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parents:
262
diff
changeset
|
1268 { |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1269 if (keyty != Tint32 && keyty != Tuns32 && keyty != Tint64 && keyty != Tuns64) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1270 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1271 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
|
1272 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1273 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1274 else if (keyty != Tint32 && keyty != Tuns32) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
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|
1275 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1276 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
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[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
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diff
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|
1277 } |
| 159 | 1278 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); |
| 1279 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1280 var->storage_class |= STCconst; | |
| 1281 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1282 st->push(new ExpStatement(loc, de)); | |
| 1283 arg = (Argument *)arguments->data[1]; // value | |
| 1284 } | |
| 1285 // Declare value | |
| 1286 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1287 error("no storage class for value %s", arg->ident->toChars()); | |
| 1288 Dsymbol *var; | |
| 1289 if (te) | |
| 1290 { | |
| 1291 if (e->type->toBasetype()->ty == Tfunction && | |
| 1292 e->op == TOKvar) | |
| 1293 { VarExp *ve = (VarExp *)e; | |
| 1294 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
| 1295 } | |
| 1296 else | |
| 1297 { | |
| 1298 arg->type = e->type; | |
| 1299 Initializer *ie = new ExpInitializer(0, e); | |
| 1300 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1301 if (e->isConst()) | |
| 1302 v->storage_class |= STCconst; | |
| 1303 var = v; | |
| 1304 } | |
| 1305 } | |
| 1306 else | |
| 1307 { | |
| 1308 var = new AliasDeclaration(loc, arg->ident, t); | |
| 1309 } | |
| 1310 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1311 st->push(new ExpStatement(loc, de)); | |
| 1312 | |
| 1313 st->push(body->syntaxCopy()); | |
| 1314 s = new CompoundStatement(loc, st); | |
| 1315 s = new ScopeStatement(loc, s); | |
| 1316 statements->push(s); | |
| 1317 } | |
| 1318 | |
| 1319 s = new UnrolledLoopStatement(loc, statements); | |
| 1320 s = s->semantic(sc); | |
| 1321 return s; | |
| 1322 } | |
| 1323 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1324 for (size_t i = 0; i < dim; i++) |
| 159 | 1325 { Argument *arg = (Argument *)arguments->data[i]; |
| 1326 if (!arg->type) | |
| 1327 { | |
| 1328 error("cannot infer type for %s", arg->ident->toChars()); | |
| 1329 return this; | |
| 1330 } | |
| 1331 } | |
| 1332 | |
| 1333 sym = new ScopeDsymbol(); | |
| 1334 sym->parent = sc->scopesym; | |
| 1335 sc = sc->push(sym); | |
| 1336 | |
| 1337 sc->noctor++; | |
| 1338 | |
| 1339 switch (tab->ty) | |
| 1340 { | |
| 1341 case Tarray: | |
| 1342 case Tsarray: | |
| 1343 if (dim < 1 || dim > 2) | |
| 1344 { | |
| 1345 error("only one or two arguments for array foreach"); | |
| 1346 break; | |
| 1347 } | |
| 1348 | |
| 1349 /* Look for special case of parsing char types out of char type | |
| 1350 * array. | |
| 1351 */ | |
| 1352 tn = tab->nextOf()->toBasetype(); | |
| 1353 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) | |
| 1354 { Argument *arg; | |
| 1355 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1356 int i = (dim == 1) ? 0 : 1; // index of value |
| 159 | 1357 arg = (Argument *)arguments->data[i]; |
| 1358 arg->type = arg->type->semantic(loc, sc); | |
| 1359 tnv = arg->type->toBasetype(); | |
| 1360 if (tnv->ty != tn->ty && | |
| 1361 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
| 1362 { | |
| 1363 if (arg->storageClass & STCref) | |
| 1364 error("foreach: value of UTF conversion cannot be ref"); | |
| 1365 if (dim == 2) | |
| 1366 { arg = (Argument *)arguments->data[0]; | |
| 1367 if (arg->storageClass & STCref) | |
| 1368 error("foreach: key cannot be ref"); | |
| 1369 } | |
| 1370 goto Lapply; | |
| 1371 } | |
| 1372 } | |
| 1373 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1374 for (size_t i = 0; i < dim; i++) |
| 159 | 1375 { // Declare args |
| 1376 Argument *arg = (Argument *)arguments->data[i]; | |
| 1377 VarDeclaration *var; | |
| 1378 | |
| 1379 var = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
| 1380 var->storage_class |= STCforeach; | |
| 1381 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
| 1382 #if 1 | |
| 1383 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1384 de->semantic(sc); | |
| 1385 #else | |
| 1386 var->semantic(sc); | |
| 1387 if (!sc->insert(var)) | |
| 1388 error("%s already defined", var->ident->toChars()); | |
| 1389 #endif | |
| 1390 if (dim == 2 && i == 0) | |
| 1391 key = var; | |
| 1392 else | |
| 1393 value = var; | |
| 1394 } | |
| 1395 | |
| 1396 sc->sbreak = this; | |
| 1397 sc->scontinue = this; | |
| 1398 body = body->semantic(sc); | |
| 1399 | |
| 1400 if (!value->type->equals(tab->next)) | |
| 1401 { | |
| 1402 if (aggr->op == TOKstring) | |
| 1403 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
| 1404 else | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1405 error("foreach: %s is not an array of %s", |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1406 tab->toChars(), value->type->toChars()); |
| 159 | 1407 } |
| 1408 | |
|
275
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parents:
262
diff
changeset
|
1409 if (key) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1410 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1411 if (global.params.is64bit) |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1412 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1413 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
|
1414 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1415 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
|
1416 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1417 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1418 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
|
1419 { |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1420 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
|
1421 } |
|
665b81613475
[svn r296] Removed: the 'suite' dir, it never took off!
lindquist
parents:
262
diff
changeset
|
1422 } |
| 159 | 1423 |
| 1424 if (key && key->storage_class & (STCout | STCref)) | |
| 1425 error("foreach: key cannot be out or ref"); | |
| 1426 break; | |
| 1427 | |
| 1428 case Taarray: | |
| 1429 taa = (TypeAArray *)tab; | |
| 1430 if (dim < 1 || dim > 2) | |
| 1431 { | |
| 1432 error("only one or two arguments for associative array foreach"); | |
| 1433 break; | |
| 1434 } | |
| 1435 if (op == TOKforeach_reverse) | |
| 1436 { | |
| 1437 error("no reverse iteration on associative arrays"); | |
| 1438 } | |
| 1439 goto Lapply; | |
| 1440 | |
| 1441 case Tclass: | |
| 1442 case Tstruct: | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1443 #if DMDV2 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1444 { /* 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
|
1445 * .empty, .next, .retreat, .head and .rear |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1446 * foreach (e; range) { ... } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1447 * translates to: |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1448 * for (auto __r = range; !__r.empty; __r.next) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1449 * { auto e = __r.head; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1450 * ... |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1451 * } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1452 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1453 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
|
1454 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1455 AggregateDeclaration *ad = (tab->ty == Tclass) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1456 ? (AggregateDeclaration *)((TypeClass *)tab)->sym |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1457 : (AggregateDeclaration *)((TypeStruct *)tab)->sym; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1458 Identifier *idhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1459 Identifier *idnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1460 if (op == TOKforeach) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1461 { idhead = Id::Fhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1462 idnext = Id::Fnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1463 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1464 else |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1465 { idhead = Id::Frear; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1466 idnext = Id::Fretreat; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1467 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1468 Dsymbol *shead = search_function(ad, idhead); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1469 if (!shead) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1470 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1471 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1472 /* 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
|
1473 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1474 Identifier *id = Identifier::generateId("__r"); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1475 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
|
1476 r->semantic(sc); |
|
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1477 Statement *init = new DeclarationStatement(loc, r); |
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1478 |
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1479 // !__r.empty |
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1480 Expression *e = new VarExp(loc, r); |
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1481 e = new DotIdExp(loc, e, Id::Fempty); |
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1482 Expression *condition = new NotExp(loc, e); |
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1483 |
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1484 // __r.next |
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1485 e = new VarExp(loc, r); |
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1486 Expression *increment = new DotIdExp(loc, e, idnext); |
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1487 |
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1488 /* Declaration statement for e: |
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1489 * auto e = __r.idhead; |
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1490 */ |
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1491 e = new VarExp(loc, r); |
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1492 Expression *einit = new DotIdExp(loc, e, idhead); |
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1493 einit = einit->semantic(sc); |
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1494 Argument *arg = (Argument *)arguments->data[0]; |
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1495 VarDeclaration *ve = new VarDeclaration(loc, arg->type, arg->ident, new ExpInitializer(loc, einit)); |
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1496 ve->storage_class |= STCforeach; |
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1497 ve->storage_class |= arg->storageClass & (STCin | STCout | STCref | STCconst | STCinvariant); |
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1498 |
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1499 DeclarationExp *de = new DeclarationExp(loc, ve); |
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1500 |
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1501 Statement *body = new CompoundStatement(loc, |
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1502 new DeclarationStatement(loc, de), this->body); |
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1503 |
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1504 s = new ForStatement(loc, init, condition, increment, body); |
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1505 s = s->semantic(sc); |
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1506 break; |
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1507 } |
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1508 #endif |
| 159 | 1509 case Tdelegate: |
| 1510 Lapply: | |
| 1511 { FuncDeclaration *fdapply; | |
| 1512 Arguments *args; | |
| 1513 Expression *ec; | |
| 1514 Expression *e; | |
| 1515 FuncLiteralDeclaration *fld; | |
| 1516 Argument *a; | |
| 1517 Type *t; | |
| 1518 Expression *flde; | |
| 1519 Identifier *id; | |
| 1520 Type *tret; | |
|
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1521 TypeDelegate* dgty; |
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1522 TypeDelegate* dgty2; |
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1523 TypeDelegate* fldeTy; |
| 159 | 1524 |
| 1525 tret = func->type->nextOf(); | |
| 1526 | |
| 1527 // Need a variable to hold value from any return statements in body. | |
| 1528 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1529 { VarDeclaration *v; | |
| 1530 | |
| 1531 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 1532 v->noauto = 1; | |
| 1533 v->semantic(sc); | |
| 1534 if (!sc->insert(v)) | |
| 1535 assert(0); | |
| 1536 v->parent = sc->func; | |
| 1537 sc->func->vresult = v; | |
| 1538 } | |
| 1539 | |
| 1540 /* Turn body into the function literal: | |
| 1541 * int delegate(ref T arg) { body } | |
| 1542 */ | |
| 1543 args = new Arguments(); | |
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1544 for (size_t i = 0; i < dim; i++) |
| 159 | 1545 { Argument *arg = (Argument *)arguments->data[i]; |
| 1546 | |
| 1547 arg->type = arg->type->semantic(loc, sc); | |
| 1548 if (arg->storageClass & STCref) | |
| 1549 id = arg->ident; | |
| 1550 else | |
| 1551 { // Make a copy of the ref argument so it isn't | |
| 1552 // a reference. | |
| 1553 VarDeclaration *v; | |
| 1554 Initializer *ie; | |
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1555 |
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1556 id = Lexer::uniqueId("__applyArg", i); |
| 159 | 1557 |
| 1558 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1559 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1560 s = new DeclarationStatement(0, v); | |
| 1561 body = new CompoundStatement(loc, s, body); | |
| 1562 } | |
| 1563 a = new Argument(STCref, arg->type, id, NULL); | |
| 1564 args->push(a); | |
| 1565 } | |
| 1566 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1567 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1568 fld->fbody = body; | |
| 1569 flde = new FuncExp(loc, fld); | |
| 1570 flde = flde->semantic(sc); | |
| 1571 | |
| 1572 // Resolve any forward referenced goto's | |
| 1573 for (int i = 0; i < gotos.dim; i++) | |
| 1574 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1575 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1576 | |
| 1577 if (!gs->label->statement) | |
| 1578 { // 'Promote' it to this scope, and replace with a return | |
| 1579 cases.push(gs); | |
| 1580 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1581 cs->statements->data[0] = (void *)s; | |
| 1582 } | |
| 1583 } | |
| 1584 | |
| 1585 if (tab->ty == Taarray) | |
| 1586 { | |
| 1587 // Check types | |
| 1588 Argument *arg = (Argument *)arguments->data[0]; | |
| 1589 if (dim == 2) | |
| 1590 { | |
| 1591 if (arg->storageClass & STCref) | |
| 1592 error("foreach: index cannot be ref"); | |
| 1593 if (!arg->type->equals(taa->index)) | |
| 1594 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
| 1595 arg = (Argument *)arguments->data[1]; | |
| 1596 } | |
| 1597 if (!arg->type->equals(taa->nextOf())) | |
| 1598 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1599 | |
| 1600 /* Call: | |
| 1601 * _aaApply(aggr, keysize, flde) | |
| 1602 */ | |
|
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1603 //LDC: Build arguments. |
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1604 static FuncDeclaration *aaApply2_fd = NULL; |
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1605 static TypeDelegate* aaApply2_dg; |
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1606 if(!aaApply2_fd) { |
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1607 Arguments* args = new Arguments; |
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1608 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
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1609 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
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1610 Arguments* dgargs = new Arguments; |
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1611 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1612 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1613 aaApply2_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1614 args->push(new Argument(STCin, aaApply2_dg, NULL, NULL)); |
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1615 aaApply2_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply2"); |
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1616 } |
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1617 static FuncDeclaration *aaApply_fd = NULL; |
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1618 static TypeDelegate* aaApply_dg; |
|
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1619 if(!aaApply_fd) { |
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1620 Arguments* args = new Arguments; |
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1621 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
|
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1622 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
|
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1623 Arguments* dgargs = new Arguments; |
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1624 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1625 aaApply_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1626 args->push(new Argument(STCin, aaApply_dg, NULL, NULL)); |
|
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1627 aaApply_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply"); |
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1628 } |
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1629 if (dim == 2) { |
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1630 fdapply = aaApply2_fd; |
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1631 fldeTy = aaApply2_dg; |
|
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1632 } else { |
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1633 fdapply = aaApply_fd; |
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1634 fldeTy = aaApply_dg; |
|
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1635 } |
| 159 | 1636 ec = new VarExp(0, fdapply); |
| 1637 Expressions *exps = new Expressions(); | |
| 1638 exps->push(aggr); | |
| 1639 size_t keysize = taa->key->size(); | |
|
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1640 keysize = (keysize + (PTRSIZE-1)) & ~(PTRSIZE-1); |
| 159 | 1641 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); |
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1642 |
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1643 // LDC paint delegate argument to the type runtime expects |
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1644 if (!fldeTy->equals(flde->type)) |
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1645 { |
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1646 flde = new CastExp(loc, flde, flde->type); |
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1647 flde->type = fldeTy; |
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1648 } |
| 159 | 1649 exps->push(flde); |
| 1650 e = new CallExp(loc, ec, exps); | |
| 1651 e->type = Type::tindex; // don't run semantic() on e | |
| 1652 } | |
| 1653 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1654 { | |
| 1655 /* Call: | |
| 1656 * _aApply(aggr, flde) | |
| 1657 */ | |
| 1658 static char fntab[9][3] = | |
| 1659 { "cc","cw","cd", | |
| 1660 "wc","cc","wd", | |
| 1661 "dc","dw","dd" | |
| 1662 }; | |
| 1663 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1664 int flag; | |
| 1665 | |
| 1666 switch (tn->ty) | |
| 1667 { | |
| 1668 case Tchar: flag = 0; break; | |
| 1669 case Twchar: flag = 3; break; | |
| 1670 case Tdchar: flag = 6; break; | |
| 1671 default: assert(0); | |
| 1672 } | |
| 1673 switch (tnv->ty) | |
| 1674 { | |
| 1675 case Tchar: flag += 0; break; | |
| 1676 case Twchar: flag += 1; break; | |
| 1677 case Tdchar: flag += 2; break; | |
| 1678 default: assert(0); | |
| 1679 } | |
| 1680 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
|
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1681 int j = sprintf(fdname, "_aApply%s%.*s%zu", r, 2, fntab[flag], dim); |
| 159 | 1682 assert(j < sizeof(fdname)); |
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1683 //LDC: Build arguments. |
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1684 Arguments* args = new Arguments; |
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1685 args->push(new Argument(STCin, tn->arrayOf(), NULL, NULL)); |
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1686 if (dim == 2) { |
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1687 Arguments* dgargs = new Arguments; |
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1688 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1689 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1690 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1691 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1692 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1693 } else { |
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1694 Arguments* dgargs = new Arguments; |
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1695 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
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1696 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1697 args->push(new Argument(STCin, dgty, NULL, NULL)); |
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1698 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1699 } |
| 159 | 1700 |
| 1701 ec = new VarExp(0, fdapply); | |
| 1702 Expressions *exps = new Expressions(); | |
| 1703 if (tab->ty == Tsarray) | |
| 1704 aggr = aggr->castTo(sc, tn->arrayOf()); | |
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1705 exps->push(aggr); |
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1706 |
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1707 // LDC paint delegate argument to the type runtime expects |
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1708 if (!dgty->equals(flde->type)) |
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1709 { |
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1710 flde = new CastExp(loc, flde, flde->type); |
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1711 flde->type = dgty; |
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1712 } |
| 159 | 1713 exps->push(flde); |
| 1714 e = new CallExp(loc, ec, exps); | |
| 1715 e->type = Type::tindex; // don't run semantic() on e | |
| 1716 } | |
| 1717 else if (tab->ty == Tdelegate) | |
| 1718 { | |
| 1719 /* Call: | |
| 1720 * aggr(flde) | |
| 1721 */ | |
| 1722 Expressions *exps = new Expressions(); | |
| 1723 exps->push(flde); | |
| 1724 e = new CallExp(loc, aggr, 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 else | |
| 1730 { | |
| 1731 /* Call: | |
| 1732 * aggr.apply(flde) | |
| 1733 */ | |
| 1734 ec = new DotIdExp(loc, aggr, | |
| 1735 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1736 : Id::apply); | |
| 1737 Expressions *exps = new Expressions(); | |
| 1738 exps->push(flde); | |
| 1739 e = new CallExp(loc, ec, exps); | |
| 1740 e = e->semantic(sc); | |
| 1741 if (e->type != Type::tint32) | |
| 1742 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1743 } | |
| 1744 | |
| 1745 if (!cases.dim) | |
| 1746 // Easy case, a clean exit from the loop | |
| 1747 s = new ExpStatement(loc, e); | |
| 1748 else | |
| 1749 { // Construct a switch statement around the return value | |
| 1750 // of the apply function. | |
| 1751 Statements *a = new Statements(); | |
| 1752 | |
| 1753 // default: break; takes care of cases 0 and 1 | |
| 1754 s = new BreakStatement(0, NULL); | |
| 1755 s = new DefaultStatement(0, s); | |
| 1756 a->push(s); | |
| 1757 | |
| 1758 // cases 2... | |
| 1759 for (int i = 0; i < cases.dim; i++) | |
| 1760 { | |
| 1761 s = (Statement *)cases.data[i]; | |
| 1762 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1763 a->push(s); | |
| 1764 } | |
| 1765 | |
| 1766 s = new CompoundStatement(loc, a); | |
| 1767 s = new SwitchStatement(loc, e, s); | |
| 1768 s = s->semantic(sc); | |
| 1769 } | |
| 1770 break; | |
| 1771 } | |
| 1772 | |
| 1773 default: | |
| 1774 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1775 break; | |
| 1776 } | |
| 1777 sc->noctor--; | |
| 1778 sc->pop(); | |
| 1779 return s; | |
| 1780 } | |
| 1781 | |
| 1782 int ForeachStatement::hasBreak() | |
| 1783 { | |
| 1784 return TRUE; | |
| 1785 } | |
| 1786 | |
| 1787 int ForeachStatement::hasContinue() | |
| 1788 { | |
| 1789 return TRUE; | |
| 1790 } | |
| 1791 | |
| 1792 int ForeachStatement::usesEH() | |
| 1793 { | |
| 1794 return body->usesEH(); | |
| 1795 } | |
| 1796 | |
| 336 | 1797 int ForeachStatement::blockExit() |
| 1798 { int result = BEfallthru; | |
| 1799 | |
| 1800 if (aggr->canThrow()) | |
| 1801 result |= BEthrow; | |
| 1802 | |
| 1803 if (body) | |
| 1804 { | |
| 1805 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 1806 } | |
| 1807 return result; | |
| 1808 } | |
| 1809 | |
| 159 | 1810 int ForeachStatement::comeFrom() |
| 1811 { | |
| 1812 if (body) | |
| 1813 return body->comeFrom(); | |
| 1814 return FALSE; | |
| 1815 } | |
| 1816 | |
| 1817 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1818 { | |
| 1819 buf->writestring(Token::toChars(op)); | |
| 1820 buf->writestring(" ("); | |
| 1821 for (int i = 0; i < arguments->dim; i++) | |
| 1822 { | |
| 1823 Argument *a = (Argument *)arguments->data[i]; | |
| 1824 if (i) | |
| 1825 buf->writestring(", "); | |
| 1826 if (a->storageClass & STCref) | |
| 1827 buf->writestring((global.params.Dversion == 1) | |
| 1828 ? (char*)"inout " : (char*)"ref "); | |
| 1829 if (a->type) | |
| 1830 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1831 else | |
| 1832 buf->writestring(a->ident->toChars()); | |
| 1833 } | |
| 1834 buf->writestring("; "); | |
| 1835 aggr->toCBuffer(buf, hgs); | |
| 1836 buf->writebyte(')'); | |
| 1837 buf->writenl(); | |
| 1838 buf->writebyte('{'); | |
| 1839 buf->writenl(); | |
| 1840 if (body) | |
| 1841 body->toCBuffer(buf, hgs); | |
| 1842 buf->writebyte('}'); | |
| 1843 buf->writenl(); | |
| 1844 } | |
| 1845 | |
| 1846 /******************************** IfStatement ***************************/ | |
| 1847 | |
| 1848 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody) | |
| 1849 : Statement(loc) | |
| 1850 { | |
| 1851 this->arg = arg; | |
| 1852 this->condition = condition; | |
| 1853 this->ifbody = ifbody; | |
| 1854 this->elsebody = elsebody; | |
| 1855 this->match = NULL; | |
| 1856 } | |
| 1857 | |
| 1858 Statement *IfStatement::syntaxCopy() | |
| 1859 { | |
| 1860 Statement *i = NULL; | |
| 1861 if (ifbody) | |
| 1862 i = ifbody->syntaxCopy(); | |
| 1863 | |
| 1864 Statement *e = NULL; | |
| 1865 if (elsebody) | |
| 1866 e = elsebody->syntaxCopy(); | |
| 1867 | |
| 1868 Argument *a = arg ? arg->syntaxCopy() : NULL; | |
| 1869 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); | |
| 1870 return s; | |
| 1871 } | |
| 1872 | |
| 1873 Statement *IfStatement::semantic(Scope *sc) | |
| 1874 { | |
| 1875 condition = condition->semantic(sc); | |
| 1876 condition = resolveProperties(sc, condition); | |
| 1877 condition = condition->checkToBoolean(); | |
| 1878 | |
| 1879 // If we can short-circuit evaluate the if statement, don't do the | |
| 1880 // semantic analysis of the skipped code. | |
| 1881 // This feature allows a limited form of conditional compilation. | |
| 1882 condition = condition->optimize(WANTflags); | |
| 1883 | |
| 1884 // Evaluate at runtime | |
| 1885 unsigned cs0 = sc->callSuper; | |
| 1886 unsigned cs1; | |
| 1887 | |
| 1888 Scope *scd; | |
| 1889 if (arg) | |
| 1890 { /* Declare arg, which we will set to be the | |
| 1891 * result of condition. | |
| 1892 */ | |
| 1893 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1894 sym->parent = sc->scopesym; | |
| 1895 scd = sc->push(sym); | |
| 1896 | |
| 1897 Type *t = arg->type ? arg->type : condition->type; | |
| 1898 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
| 1899 match->noauto = 1; | |
| 1900 match->semantic(scd); | |
| 1901 if (!scd->insert(match)) | |
| 1902 assert(0); | |
| 1903 match->parent = sc->func; | |
| 1904 | |
| 1905 /* Generate: | |
| 1906 * (arg = condition) | |
| 1907 */ | |
| 1908 VarExp *v = new VarExp(0, match); | |
| 1909 condition = new AssignExp(loc, v, condition); | |
| 1910 condition = condition->semantic(scd); | |
| 1911 } | |
| 1912 else | |
| 1913 scd = sc->push(); | |
| 1914 ifbody = ifbody->semantic(scd); | |
| 1915 scd->pop(); | |
| 1916 | |
| 1917 cs1 = sc->callSuper; | |
| 1918 sc->callSuper = cs0; | |
| 1919 if (elsebody) | |
| 1920 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 1921 sc->mergeCallSuper(loc, cs1); | |
| 1922 | |
| 1923 return this; | |
| 1924 } | |
| 1925 | |
| 1926 int IfStatement::usesEH() | |
| 1927 { | |
| 1928 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 1929 } | |
| 1930 | |
| 336 | 1931 int IfStatement::blockExit() |
| 1932 { | |
| 1933 //printf("IfStatement::blockExit(%p)\n", this); | |
| 1934 | |
| 1935 int result = BEnone; | |
| 1936 if (condition->canThrow()) | |
| 1937 result |= BEthrow; | |
| 1938 if (condition->isBool(TRUE)) | |
| 1939 { | |
| 1940 if (ifbody) | |
| 1941 result |= ifbody->blockExit(); | |
| 1942 else | |
| 1943 result |= BEfallthru; | |
| 1944 } | |
| 1945 else if (condition->isBool(FALSE)) | |
| 1946 { | |
| 1947 if (elsebody) | |
| 1948 result |= elsebody->blockExit(); | |
| 1949 else | |
| 1950 result |= BEfallthru; | |
| 1951 } | |
| 1952 else | |
| 1953 { | |
| 1954 if (ifbody) | |
| 1955 result |= ifbody->blockExit(); | |
| 1956 else | |
| 1957 result |= BEfallthru; | |
| 1958 if (elsebody) | |
| 1959 result |= elsebody->blockExit(); | |
| 1960 else | |
| 1961 result |= BEfallthru; | |
| 1962 } | |
| 1963 //printf("IfStatement::blockExit(%p) = x%x\n", this, result); | |
| 1964 return result; | |
| 1965 } | |
| 1966 | |
| 159 | 1967 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 1968 { | |
| 1969 buf->writestring("if ("); | |
| 1970 if (arg) | |
| 1971 { | |
| 1972 if (arg->type) | |
| 1973 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 1974 else | |
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1975 { buf->writestring("auto "); |
| 159 | 1976 buf->writestring(arg->ident->toChars()); |
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1977 } |
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1978 buf->writestring(" = "); |
| 159 | 1979 } |
| 1980 condition->toCBuffer(buf, hgs); | |
| 1981 buf->writebyte(')'); | |
| 1982 buf->writenl(); | |
| 1983 ifbody->toCBuffer(buf, hgs); | |
| 1984 if (elsebody) | |
| 1985 { buf->writestring("else"); | |
| 1986 buf->writenl(); | |
| 1987 elsebody->toCBuffer(buf, hgs); | |
| 1988 } | |
| 1989 } | |
| 1990 | |
| 1991 /******************************** ConditionalStatement ***************************/ | |
| 1992 | |
| 1993 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 1994 : Statement(loc) | |
| 1995 { | |
| 1996 this->condition = condition; | |
| 1997 this->ifbody = ifbody; | |
| 1998 this->elsebody = elsebody; | |
| 1999 } | |
| 2000 | |
| 2001 Statement *ConditionalStatement::syntaxCopy() | |
| 2002 { | |
| 2003 Statement *e = NULL; | |
| 2004 if (elsebody) | |
| 2005 e = elsebody->syntaxCopy(); | |
| 2006 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 2007 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 2008 return s; | |
| 2009 } | |
| 2010 | |
| 2011 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 2012 { | |
| 2013 //printf("ConditionalStatement::semantic()\n"); | |
| 2014 | |
| 2015 // If we can short-circuit evaluate the if statement, don't do the | |
| 2016 // semantic analysis of the skipped code. | |
| 2017 // This feature allows a limited form of conditional compilation. | |
| 2018 if (condition->include(sc, NULL)) | |
| 2019 { | |
| 2020 ifbody = ifbody->semantic(sc); | |
| 2021 return ifbody; | |
| 2022 } | |
| 2023 else | |
| 2024 { | |
| 2025 if (elsebody) | |
| 2026 elsebody = elsebody->semantic(sc); | |
| 2027 return elsebody; | |
| 2028 } | |
| 2029 } | |
| 2030 | |
| 2031 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 2032 { | |
| 2033 Statement *s; | |
| 2034 | |
| 2035 if (condition->include(sc, NULL)) | |
| 2036 s = ifbody; | |
| 2037 else | |
| 2038 s = elsebody; | |
| 2039 | |
| 2040 Statements *a = new Statements(); | |
| 2041 a->push(s); | |
| 2042 return a; | |
| 2043 } | |
| 2044 | |
| 2045 int ConditionalStatement::usesEH() | |
| 2046 { | |
| 2047 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2048 } | |
| 2049 | |
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2050 int ConditionalStatement::blockExit() |
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2051 { |
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2052 int result = ifbody->blockExit(); |
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2053 if (elsebody) |
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2054 result |= elsebody->blockExit(); |
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2055 return result; |
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2056 } |
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2057 |
| 159 | 2058 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2059 { | |
| 2060 condition->toCBuffer(buf, hgs); | |
| 2061 buf->writenl(); | |
| 336 | 2062 buf->writeByte('{'); |
| 2063 buf->writenl(); | |
| 159 | 2064 if (ifbody) |
| 2065 ifbody->toCBuffer(buf, hgs); | |
| 336 | 2066 buf->writeByte('}'); |
| 2067 buf->writenl(); | |
| 159 | 2068 if (elsebody) |
| 2069 { | |
| 2070 buf->writestring("else"); | |
| 2071 buf->writenl(); | |
| 336 | 2072 buf->writeByte('{'); |
| 2073 buf->writenl(); | |
| 159 | 2074 elsebody->toCBuffer(buf, hgs); |
| 336 | 2075 buf->writeByte('}'); |
| 2076 buf->writenl(); | |
| 159 | 2077 } |
| 2078 buf->writenl(); | |
| 2079 } | |
| 2080 | |
| 2081 | |
| 2082 /******************************** PragmaStatement ***************************/ | |
| 2083 | |
| 2084 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 2085 : Statement(loc) | |
| 2086 { | |
| 2087 this->ident = ident; | |
| 2088 this->args = args; | |
| 2089 this->body = body; | |
| 2090 } | |
| 2091 | |
| 2092 Statement *PragmaStatement::syntaxCopy() | |
| 2093 { | |
| 2094 Statement *b = NULL; | |
| 2095 if (body) | |
| 2096 b = body->syntaxCopy(); | |
| 2097 PragmaStatement *s = new PragmaStatement(loc, | |
| 2098 ident, Expression::arraySyntaxCopy(args), b); | |
| 2099 return s; | |
| 2100 } | |
| 2101 | |
| 2102 Statement *PragmaStatement::semantic(Scope *sc) | |
| 2103 { // Should be merged with PragmaDeclaration | |
| 2104 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 2105 //printf("body = %p\n", body); | |
| 2106 if (ident == Id::msg) | |
| 2107 { | |
| 2108 if (args) | |
| 2109 { | |
| 2110 for (size_t i = 0; i < args->dim; i++) | |
| 2111 { | |
| 2112 Expression *e = (Expression *)args->data[i]; | |
| 2113 | |
| 2114 e = e->semantic(sc); | |
| 2115 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2116 if (e->op == TOKstring) | |
| 2117 { | |
| 2118 StringExp *se = (StringExp *)e; | |
|
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2119 fprintf(stdmsg, "%.*s", (int)se->len, (char*)se->string); |
| 159 | 2120 } |
| 2121 else | |
| 2122 error("string expected for message, not '%s'", e->toChars()); | |
| 2123 } | |
| 2124 fprintf(stdmsg, "\n"); | |
| 2125 } | |
| 2126 } | |
| 2127 else if (ident == Id::lib) | |
| 2128 { | |
|
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|
2129 #if 1 |
|
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|
2130 /* Should this be allowed? |
|
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diff
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|
2131 */ |
|
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|
2132 error("pragma(lib) not allowed as statement"); |
|
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diff
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|
2133 #else |
| 159 | 2134 if (!args || args->dim != 1) |
| 2135 error("string expected for library name"); | |
| 2136 else | |
| 2137 { | |
| 2138 Expression *e = (Expression *)args->data[0]; | |
| 2139 | |
| 2140 e = e->semantic(sc); | |
| 2141 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2142 args->data[0] = (void *)e; | |
| 2143 if (e->op != TOKstring) | |
| 2144 error("string expected for library name, not '%s'", e->toChars()); | |
| 2145 else if (global.params.verbose) | |
| 2146 { | |
| 2147 StringExp *se = (StringExp *)e; | |
| 2148 char *name = (char *)mem.malloc(se->len + 1); | |
| 2149 memcpy(name, se->string, se->len); | |
| 2150 name[se->len] = 0; | |
| 2151 printf("library %s\n", name); | |
| 2152 mem.free(name); | |
| 2153 } | |
| 2154 } | |
|
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diff
changeset
|
2155 #endif |
| 159 | 2156 } |
|
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diff
changeset
|
2157 |
|
03d7c4aac654
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2158 // LDC |
|
03d7c4aac654
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
2159 else if (ident == Id::allow_inline) |
|
03d7c4aac654
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diff
changeset
|
2160 { |
|
03d7c4aac654
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff
changeset
|
2161 sc->func->allowInlining = true; |
|
03d7c4aac654
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
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|
2162 } |
|
03d7c4aac654
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2163 |
| 159 | 2164 else |
| 2165 error("unrecognized pragma(%s)", ident->toChars()); | |
| 2166 | |
| 2167 if (body) | |
| 2168 { | |
| 2169 body = body->semantic(sc); | |
| 2170 } | |
| 2171 return body; | |
| 2172 } | |
| 2173 | |
| 2174 int PragmaStatement::usesEH() | |
| 2175 { | |
| 2176 return body && body->usesEH(); | |
| 2177 } | |
| 2178 | |
| 336 | 2179 int PragmaStatement::blockExit() |
| 2180 { | |
| 2181 int result = BEfallthru; | |
| 2182 #if 0 // currently, no code is generated for Pragma's, so it's just fallthru | |
| 2183 if (arrayExpressionCanThrow(args)) | |
| 2184 result |= BEthrow; | |
| 2185 if (body) | |
| 2186 result |= body->blockExit(); | |
| 2187 #endif | |
| 2188 return result; | |
| 2189 } | |
| 2190 | |
| 159 | 2191 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2192 { | |
| 2193 buf->writestring("pragma ("); | |
| 2194 buf->writestring(ident->toChars()); | |
| 2195 if (args && args->dim) | |
| 2196 { | |
| 2197 buf->writestring(", "); | |
| 2198 argsToCBuffer(buf, args, hgs); | |
| 2199 } | |
| 2200 buf->writeByte(')'); | |
| 2201 if (body) | |
| 2202 { | |
| 2203 buf->writenl(); | |
| 2204 buf->writeByte('{'); | |
| 2205 buf->writenl(); | |
| 2206 | |
| 2207 body->toCBuffer(buf, hgs); | |
| 2208 | |
| 2209 buf->writeByte('}'); | |
| 2210 buf->writenl(); | |
| 2211 } | |
| 2212 else | |
| 2213 { | |
| 2214 buf->writeByte(';'); | |
| 2215 buf->writenl(); | |
| 2216 } | |
| 2217 } | |
| 2218 | |
| 2219 | |
| 2220 /******************************** StaticAssertStatement ***************************/ | |
| 2221 | |
| 2222 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 2223 : Statement(sa->loc) | |
| 2224 { | |
| 2225 this->sa = sa; | |
| 2226 } | |
| 2227 | |
| 2228 Statement *StaticAssertStatement::syntaxCopy() | |
| 2229 { | |
| 2230 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 2231 return s; | |
| 2232 } | |
| 2233 | |
| 2234 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 2235 { | |
| 2236 sa->semantic2(sc); | |
| 2237 return NULL; | |
| 2238 } | |
| 2239 | |
| 2240 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2241 { | |
| 2242 sa->toCBuffer(buf, hgs); | |
| 2243 } | |
| 2244 | |
| 2245 | |
| 2246 /******************************** SwitchStatement ***************************/ | |
| 2247 | |
| 2248 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 2249 : Statement(loc) | |
| 2250 { | |
| 2251 condition = c; | |
| 2252 body = b; | |
| 2253 sdefault = NULL; | |
| 2254 cases = NULL; | |
| 2255 hasNoDefault = 0; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
2256 // LDC |
| 309 | 2257 enclosinghandler = NULL; |
| 159 | 2258 } |
| 2259 | |
| 2260 Statement *SwitchStatement::syntaxCopy() | |
| 2261 { | |
| 2262 SwitchStatement *s = new SwitchStatement(loc, | |
| 2263 condition->syntaxCopy(), body->syntaxCopy()); | |
| 2264 return s; | |
| 2265 } | |
| 2266 | |
| 2267 Statement *SwitchStatement::semantic(Scope *sc) | |
| 2268 { | |
| 2269 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 2270 assert(!cases); // ensure semantic() is only run once | |
| 2271 | |
| 309 | 2272 enclosinghandler = sc->tfOfTry; |
| 159 | 2273 |
| 2274 condition = condition->semantic(sc); | |
| 2275 condition = resolveProperties(sc, condition); | |
| 2276 if (condition->type->isString()) | |
| 2277 { | |
| 2278 // If it's not an array, cast it to one | |
| 2279 if (condition->type->ty != Tarray) | |
| 2280 { | |
| 2281 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2282 } | |
| 2283 } | |
| 2284 else | |
| 2285 { condition = condition->integralPromotions(sc); | |
| 2286 condition->checkIntegral(); | |
| 2287 } | |
| 2288 condition = condition->optimize(WANTvalue); | |
| 2289 | |
| 2290 sc = sc->push(); | |
| 2291 sc->sbreak = this; | |
| 2292 sc->sw = this; | |
| 2293 | |
| 2294 cases = new Array(); | |
| 2295 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2296 body = body->semantic(sc); | |
| 2297 sc->noctor--; | |
| 2298 | |
| 2299 // Resolve any goto case's with exp | |
| 2300 for (int i = 0; i < gotoCases.dim; i++) | |
| 2301 { | |
| 2302 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2303 | |
| 2304 if (!gcs->exp) | |
| 2305 { | |
| 2306 gcs->error("no case statement following goto case;"); | |
| 2307 break; | |
| 2308 } | |
| 2309 | |
| 2310 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2311 { | |
| 2312 if (!scx->sw) | |
| 2313 continue; | |
| 2314 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2315 { | |
| 2316 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2317 | |
| 2318 if (cs->exp->equals(gcs->exp)) | |
| 2319 { | |
| 2320 gcs->cs = cs; | |
| 2321 goto Lfoundcase; | |
| 2322 } | |
| 2323 } | |
| 2324 } | |
| 2325 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2326 | |
| 2327 Lfoundcase: | |
| 2328 ; | |
| 2329 } | |
| 2330 | |
| 2331 if (!sc->sw->sdefault) | |
| 2332 { hasNoDefault = 1; | |
| 2333 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
945
diff
changeset
|
2334 warning("switch statement has no default"); |
| 159 | 2335 |
| 2336 // Generate runtime error if the default is hit | |
| 2337 Statements *a = new Statements(); | |
| 2338 CompoundStatement *cs; | |
| 2339 Statement *s; | |
| 2340 | |
| 2341 if (global.params.useSwitchError) | |
| 2342 s = new SwitchErrorStatement(loc); | |
| 2343 else | |
| 2344 { Expression *e = new HaltExp(loc); | |
| 2345 s = new ExpStatement(loc, e); | |
| 2346 } | |
| 2347 | |
| 2348 a->reserve(4); | |
| 2349 a->push(body); | |
| 901 | 2350 |
| 2351 // LDC needs semantic to be run on break | |
| 2352 Statement *breakstmt = new BreakStatement(loc, NULL); | |
| 2353 breakstmt->semantic(sc); | |
| 2354 a->push(breakstmt); | |
| 2355 | |
| 159 | 2356 sc->sw->sdefault = new DefaultStatement(loc, s); |
| 2357 a->push(sc->sw->sdefault); | |
| 2358 cs = new CompoundStatement(loc, a); | |
| 2359 body = cs; | |
| 2360 } | |
| 2361 | |
| 2362 sc->pop(); | |
| 2363 return this; | |
| 2364 } | |
| 2365 | |
| 2366 int SwitchStatement::hasBreak() | |
| 2367 { | |
| 2368 return TRUE; | |
| 2369 } | |
| 2370 | |
| 2371 int SwitchStatement::usesEH() | |
| 2372 { | |
| 2373 return body ? body->usesEH() : 0; | |
| 2374 } | |
| 2375 | |
| 336 | 2376 int SwitchStatement::blockExit() |
| 2377 { int result = BEnone; | |
| 2378 if (condition->canThrow()) | |
| 2379 result |= BEthrow; | |
| 2380 | |
| 2381 if (body) | |
| 2382 { result |= body->blockExit(); | |
| 2383 if (result & BEbreak) | |
| 2384 { result |= BEfallthru; | |
| 2385 result &= ~BEbreak; | |
| 2386 } | |
| 2387 } | |
| 2388 else | |
| 2389 result |= BEfallthru; | |
| 2390 | |
| 2391 return result; | |
| 2392 } | |
| 2393 | |
| 159 | 2394 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2395 { | |
| 2396 buf->writestring("switch ("); | |
| 2397 condition->toCBuffer(buf, hgs); | |
| 2398 buf->writebyte(')'); | |
| 2399 buf->writenl(); | |
| 2400 if (body) | |
| 2401 { | |
| 2402 if (!body->isScopeStatement()) | |
| 2403 { buf->writebyte('{'); | |
| 2404 buf->writenl(); | |
| 2405 body->toCBuffer(buf, hgs); | |
| 2406 buf->writebyte('}'); | |
| 2407 buf->writenl(); | |
| 2408 } | |
| 2409 else | |
| 2410 { | |
| 2411 body->toCBuffer(buf, hgs); | |
| 2412 } | |
| 2413 } | |
| 2414 } | |
| 2415 | |
| 2416 /******************************** CaseStatement ***************************/ | |
| 2417 | |
| 2418 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2419 : Statement(loc) | |
| 2420 { | |
| 2421 this->exp = exp; | |
| 2422 this->statement = s; | |
| 2423 cblock = NULL; | |
| 2424 bodyBB = NULL; | |
|
262
88252a1af660
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lindquist
parents:
232
diff
changeset
|
2425 llvmIdx = NULL; |
| 159 | 2426 } |
| 2427 | |
| 2428 Statement *CaseStatement::syntaxCopy() | |
| 2429 { | |
| 2430 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2431 return s; | |
| 2432 } | |
| 2433 | |
| 2434 Statement *CaseStatement::semantic(Scope *sc) | |
| 2435 { SwitchStatement *sw = sc->sw; | |
| 2436 | |
| 2437 //printf("CaseStatement::semantic() %s\n", toChars()); | |
| 2438 exp = exp->semantic(sc); | |
| 2439 if (sw) | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2440 { |
| 159 | 2441 exp = exp->implicitCastTo(sc, sw->condition->type); |
| 2442 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2443 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2444 { | |
| 2445 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2446 exp = new IntegerExp(0); | |
| 2447 } | |
| 2448 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2449 for (int i = 0; i < sw->cases->dim; i++) |
| 159 | 2450 { |
| 2451 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2452 | |
| 2453 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2454 if (cs->exp->equals(exp)) | |
| 2455 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2456 break; | |
| 2457 } | |
| 2458 } | |
| 2459 | |
| 2460 sw->cases->push(this); | |
| 2461 | |
| 2462 // Resolve any goto case's with no exp to this case statement | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2463 for (size_t i = 0; i < sw->gotoCases.dim; i++) |
| 159 | 2464 { |
| 2465 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2466 | |
| 2467 if (!gcs->exp) | |
| 2468 { | |
| 2469 gcs->cs = this; | |
| 2470 sw->gotoCases.remove(i); // remove from array | |
| 2471 } | |
| 2472 } | |
| 2473 } | |
| 2474 else | |
| 2475 error("case not in switch statement"); | |
| 2476 statement = statement->semantic(sc); | |
| 2477 return this; | |
| 2478 } | |
| 2479 | |
| 2480 int CaseStatement::compare(Object *obj) | |
| 2481 { | |
| 2482 // Sort cases so we can do an efficient lookup | |
| 2483 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2484 | |
| 2485 return exp->compare(cs2->exp); | |
| 2486 } | |
| 2487 | |
| 2488 int CaseStatement::usesEH() | |
| 2489 { | |
| 2490 return statement->usesEH(); | |
| 2491 } | |
| 2492 | |
| 336 | 2493 int CaseStatement::blockExit() |
| 2494 { | |
| 2495 return statement->blockExit(); | |
| 2496 } | |
| 2497 | |
| 159 | 2498 int CaseStatement::comeFrom() |
| 2499 { | |
| 2500 return TRUE; | |
| 2501 } | |
| 2502 | |
| 2503 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2504 { | |
| 2505 buf->writestring("case "); | |
| 2506 exp->toCBuffer(buf, hgs); | |
| 2507 buf->writebyte(':'); | |
| 2508 buf->writenl(); | |
| 2509 statement->toCBuffer(buf, hgs); | |
| 2510 } | |
| 2511 | |
| 2512 /******************************** DefaultStatement ***************************/ | |
| 2513 | |
| 2514 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 2515 : Statement(loc) | |
| 2516 { | |
| 2517 this->statement = s; | |
| 2518 #if IN_GCC | |
| 2519 + cblock = NULL; | |
| 2520 #endif | |
| 2521 bodyBB = NULL; | |
| 2522 } | |
| 2523 | |
| 2524 Statement *DefaultStatement::syntaxCopy() | |
| 2525 { | |
| 2526 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 2527 return s; | |
| 2528 } | |
| 2529 | |
| 2530 Statement *DefaultStatement::semantic(Scope *sc) | |
| 2531 { | |
| 336 | 2532 //printf("DefaultStatement::semantic()\n"); |
| 159 | 2533 if (sc->sw) |
| 2534 { | |
| 2535 if (sc->sw->sdefault) | |
| 2536 { | |
| 2537 error("switch statement already has a default"); | |
| 2538 } | |
| 2539 sc->sw->sdefault = this; | |
| 2540 } | |
| 2541 else | |
| 2542 error("default not in switch statement"); | |
| 2543 statement = statement->semantic(sc); | |
| 2544 return this; | |
| 2545 } | |
| 2546 | |
| 2547 int DefaultStatement::usesEH() | |
| 2548 { | |
| 2549 return statement->usesEH(); | |
| 2550 } | |
| 2551 | |
| 336 | 2552 int DefaultStatement::blockExit() |
| 2553 { | |
| 2554 return statement->blockExit(); | |
| 2555 } | |
| 2556 | |
| 159 | 2557 int DefaultStatement::comeFrom() |
| 2558 { | |
| 2559 return TRUE; | |
| 2560 } | |
| 2561 | |
| 2562 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2563 { | |
| 2564 buf->writestring("default:\n"); | |
| 2565 statement->toCBuffer(buf, hgs); | |
| 2566 } | |
| 2567 | |
| 2568 /******************************** GotoDefaultStatement ***************************/ | |
| 2569 | |
| 2570 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 2571 : Statement(loc) | |
| 2572 { | |
| 2573 sw = NULL; | |
| 309 | 2574 enclosinghandler = NULL; |
| 159 | 2575 } |
| 2576 | |
| 2577 Statement *GotoDefaultStatement::syntaxCopy() | |
| 2578 { | |
| 2579 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 2580 return s; | |
| 2581 } | |
| 2582 | |
| 2583 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 2584 { | |
| 309 | 2585 enclosinghandler = sc->tfOfTry; |
| 159 | 2586 sw = sc->sw; |
| 2587 if (!sw) | |
| 2588 error("goto default not in switch statement"); | |
| 2589 return this; | |
| 2590 } | |
| 2591 | |
| 336 | 2592 int GotoDefaultStatement::blockExit() |
| 2593 { | |
| 2594 return BEgoto; | |
| 2595 } | |
| 2596 | |
| 159 | 2597 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2598 { | |
| 2599 buf->writestring("goto default;\n"); | |
| 2600 } | |
| 2601 | |
| 2602 /******************************** GotoCaseStatement ***************************/ | |
| 2603 | |
| 2604 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 2605 : Statement(loc) | |
| 2606 { | |
| 2607 cs = NULL; | |
| 2608 this->exp = exp; | |
| 309 | 2609 enclosinghandler = NULL; |
| 159 | 2610 sw = NULL; |
| 2611 } | |
| 2612 | |
| 2613 Statement *GotoCaseStatement::syntaxCopy() | |
| 2614 { | |
| 2615 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 2616 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 2617 return s; | |
| 2618 } | |
| 2619 | |
| 2620 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 2621 { | |
| 309 | 2622 enclosinghandler = sc->tfOfTry; |
| 159 | 2623 if (exp) |
| 2624 exp = exp->semantic(sc); | |
| 2625 | |
| 2626 if (!sc->sw) | |
| 2627 error("goto case not in switch statement"); | |
| 2628 else | |
| 2629 { | |
| 2630 sw = sc->sw; | |
| 2631 sc->sw->gotoCases.push(this); | |
| 2632 if (exp) | |
| 2633 { | |
| 2634 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 2635 exp = exp->optimize(WANTvalue); | |
| 2636 } | |
| 2637 } | |
| 2638 return this; | |
| 2639 } | |
| 2640 | |
| 336 | 2641 int GotoCaseStatement::blockExit() |
| 2642 { | |
| 2643 return BEgoto; | |
| 2644 } | |
| 2645 | |
| 159 | 2646 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2647 { | |
| 2648 buf->writestring("goto case"); | |
| 2649 if (exp) | |
| 2650 { buf->writebyte(' '); | |
| 2651 exp->toCBuffer(buf, hgs); | |
| 2652 } | |
| 2653 buf->writebyte(';'); | |
| 2654 buf->writenl(); | |
| 2655 } | |
| 2656 | |
| 2657 /******************************** SwitchErrorStatement ***************************/ | |
| 2658 | |
| 2659 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 2660 : Statement(loc) | |
| 2661 { | |
| 2662 } | |
| 2663 | |
| 336 | 2664 int SwitchErrorStatement::blockExit() |
| 2665 { | |
| 2666 return BEthrow; | |
| 2667 } | |
| 2668 | |
| 159 | 2669 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2670 { | |
| 2671 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 2672 buf->writenl(); | |
| 2673 } | |
| 2674 | |
| 2675 /******************************** ReturnStatement ***************************/ | |
| 2676 | |
| 2677 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 2678 : Statement(loc) | |
| 2679 { | |
| 2680 this->exp = exp; | |
| 309 | 2681 this->enclosinghandler = NULL; |
| 159 | 2682 } |
| 2683 | |
| 2684 Statement *ReturnStatement::syntaxCopy() | |
| 2685 { | |
| 2686 Expression *e = NULL; | |
| 2687 if (exp) | |
| 2688 e = exp->syntaxCopy(); | |
| 2689 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 2690 return s; | |
| 2691 } | |
| 2692 | |
| 2693 Statement *ReturnStatement::semantic(Scope *sc) | |
| 2694 { | |
| 2695 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 309 | 2696 this->enclosinghandler = sc->tfOfTry; |
| 159 | 2697 |
| 2698 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 2699 Scope *scx = sc; | |
| 2700 int implicit0 = 0; | |
| 2701 | |
| 2702 if (sc->fes) | |
| 2703 { | |
| 2704 // Find scope of function foreach is in | |
| 2705 for (; 1; scx = scx->enclosing) | |
| 2706 { | |
| 2707 assert(scx); | |
| 2708 if (scx->func != fd) | |
| 2709 { fd = scx->func; // fd is now function enclosing foreach | |
| 2710 break; | |
| 2711 } | |
| 2712 } | |
| 2713 } | |
| 2714 | |
| 2715 Type *tret = fd->type->nextOf(); | |
| 2716 if (fd->tintro) | |
| 336 | 2717 /* We'll be implicitly casting the return expression to tintro |
| 2718 */ | |
| 159 | 2719 tret = fd->tintro->nextOf(); |
| 2720 Type *tbret = NULL; | |
| 2721 | |
| 2722 if (tret) | |
| 2723 tbret = tret->toBasetype(); | |
| 2724 | |
| 2725 // main() returns 0, even if it returns void | |
| 2726 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 2727 { implicit0 = 1; | |
| 2728 exp = new IntegerExp(0); | |
| 2729 } | |
| 2730 | |
| 2731 if (sc->incontract || scx->incontract) | |
| 2732 error("return statements cannot be in contracts"); | |
| 2733 if (sc->tf || scx->tf) | |
| 2734 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); | |
| 2735 | |
| 2736 if (fd->isCtorDeclaration()) | |
| 2737 { | |
| 2738 // Constructors implicitly do: | |
| 2739 // return this; | |
| 2740 if (exp && exp->op != TOKthis) | |
| 2741 error("cannot return expression from constructor"); | |
| 2742 exp = new ThisExp(0); | |
| 2743 } | |
| 2744 | |
| 2745 if (!exp) | |
| 2746 fd->nrvo_can = 0; | |
| 2747 | |
| 2748 if (exp) | |
| 2749 { | |
| 2750 fd->hasReturnExp |= 1; | |
| 2751 | |
| 2752 exp = exp->semantic(sc); | |
| 2753 exp = resolveProperties(sc, exp); | |
| 2754 exp = exp->optimize(WANTvalue); | |
| 2755 | |
| 2756 if (fd->nrvo_can && exp->op == TOKvar) | |
| 2757 { VarExp *ve = (VarExp *)exp; | |
| 2758 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 2759 | |
| 2760 if (!v || v->isOut() || v->isRef()) | |
| 2761 fd->nrvo_can = 0; | |
| 2762 else if (fd->nrvo_var == NULL) | |
| 2763 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 2764 fd->nrvo_var = v; | |
| 2765 else | |
| 2766 fd->nrvo_can = 0; | |
| 2767 } | |
| 2768 else if (fd->nrvo_var != v) | |
| 2769 fd->nrvo_can = 0; | |
| 2770 } | |
| 2771 else | |
| 2772 fd->nrvo_can = 0; | |
| 2773 | |
| 2774 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2775 { | |
| 2776 } | |
| 2777 else if (fd->inferRetType) | |
| 2778 { | |
| 2779 if (fd->type->nextOf()) | |
| 2780 { | |
| 2781 if (!exp->type->equals(fd->type->nextOf())) | |
| 2782 error("mismatched function return type inference of %s and %s", | |
| 2783 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 2784 } | |
| 2785 else | |
| 2786 { | |
| 2787 fd->type->next = exp->type; | |
| 2788 fd->type = fd->type->semantic(loc, sc); | |
| 2789 if (!fd->tintro) | |
| 2790 { tret = fd->type->nextOf(); | |
| 2791 tbret = tret->toBasetype(); | |
| 2792 } | |
| 2793 } | |
| 2794 } | |
| 2795 else if (tbret->ty != Tvoid) | |
| 2796 { | |
| 2797 exp = exp->implicitCastTo(sc, tret); | |
| 2798 } | |
| 2799 } | |
| 2800 else if (fd->inferRetType) | |
| 2801 { | |
| 2802 if (fd->type->nextOf()) | |
| 2803 { | |
| 2804 if (fd->type->nextOf()->ty != Tvoid) | |
| 2805 error("mismatched function return type inference of void and %s", | |
| 2806 fd->type->nextOf()->toChars()); | |
| 2807 } | |
| 2808 else | |
| 2809 { | |
| 2810 fd->type->next = Type::tvoid; | |
| 2811 fd->type = fd->type->semantic(loc, sc); | |
| 2812 if (!fd->tintro) | |
| 2813 { tret = Type::tvoid; | |
| 2814 tbret = tret; | |
| 2815 } | |
| 2816 } | |
| 2817 } | |
| 2818 else if (tbret->ty != Tvoid) // if non-void return | |
| 2819 error("return expression expected"); | |
| 2820 | |
| 2821 if (sc->fes) | |
| 2822 { | |
| 2823 Statement *s; | |
| 2824 | |
| 2825 if (exp && !implicit0) | |
| 2826 { | |
| 2827 exp = exp->implicitCastTo(sc, tret); | |
| 2828 } | |
| 2829 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 2830 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 2831 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 2832 exp->op == TOKstring) | |
| 2833 { | |
| 2834 sc->fes->cases.push(this); | |
|
846
bc982f1ad106
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2835 // Construct: return cases.dim+1; |
| 159 | 2836 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 2837 } | |
| 2838 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 2839 { | |
| 2840 s = new ReturnStatement(0, NULL); | |
| 2841 sc->fes->cases.push(s); | |
| 2842 | |
| 2843 // Construct: { exp; return cases.dim + 1; } | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2844 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2845 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2846 s = new CompoundStatement(loc, s1, s2); |
| 2847 } | |
| 2848 else | |
| 2849 { | |
| 2850 // Construct: return vresult; | |
| 2851 if (!fd->vresult) | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2852 { // Declare vresult |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2853 VarDeclaration *v = new VarDeclaration(loc, tret, Id::result, NULL); |
| 159 | 2854 v->noauto = 1; |
| 2855 v->semantic(scx); | |
| 2856 if (!scx->insert(v)) | |
| 2857 assert(0); | |
| 2858 v->parent = fd; | |
| 2859 fd->vresult = v; | |
| 2860 } | |
| 2861 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2862 s = new ReturnStatement(0, new VarExp(0, fd->vresult)); |
| 159 | 2863 sc->fes->cases.push(s); |
| 2864 | |
| 2865 // 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
|
2866 exp = new AssignExp(loc, new VarExp(0, fd->vresult), exp); |
| 159 | 2867 exp = exp->semantic(sc); |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2868 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2869 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2870 s = new CompoundStatement(loc, s1, s2); |
| 2871 } | |
| 2872 return s; | |
| 2873 } | |
| 2874 | |
| 2875 if (exp) | |
| 2876 { | |
| 2877 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2878 { | |
| 2879 assert(fd->vresult); | |
| 2880 VarExp *v = new VarExp(0, fd->vresult); | |
| 2881 | |
| 2882 exp = new AssignExp(loc, v, exp); | |
| 2883 exp = exp->semantic(sc); | |
| 2884 } | |
| 2885 //exp->dump(0); | |
| 2886 //exp->print(); | |
| 2887 exp->checkEscape(); | |
| 2888 } | |
| 2889 | |
| 2890 /* BUG: need to issue an error on: | |
| 2891 * this | |
| 2892 * { if (x) return; | |
| 2893 * super(); | |
| 2894 * } | |
| 2895 */ | |
| 2896 | |
| 2897 if (sc->callSuper & CSXany_ctor && | |
| 2898 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 2899 error("return without calling constructor"); | |
| 2900 | |
| 2901 sc->callSuper |= CSXreturn; | |
| 2902 | |
| 2903 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 2904 if (fd->returnLabel) | |
| 2905 { | |
| 2906 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 2907 | |
| 2908 gs->label = fd->returnLabel; | |
| 2909 if (exp) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2910 { /* Replace: return exp; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2911 * with: exp; goto returnLabel; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2912 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2913 Statement *s = new ExpStatement(0, exp); |
| 159 | 2914 return new CompoundStatement(loc, s, gs); |
| 2915 } | |
| 2916 return gs; | |
| 2917 } | |
| 2918 | |
| 2919 if (exp && tbret->ty == Tvoid && !fd->isMain()) | |
| 336 | 2920 { |
| 2921 /* Replace: | |
| 2922 * return exp; | |
| 2923 * with: | |
| 2924 * exp; return; | |
| 2925 */ | |
| 2926 Statement *s = new ExpStatement(loc, exp); | |
| 159 | 2927 loc = 0; |
| 2928 exp = NULL; | |
| 2929 return new CompoundStatement(loc, s, this); | |
| 2930 } | |
| 2931 | |
| 2932 return this; | |
| 2933 } | |
| 2934 | |
| 336 | 2935 int ReturnStatement::blockExit() |
| 2936 { int result = BEreturn; | |
| 2937 | |
| 2938 if (exp && exp->canThrow()) | |
| 2939 result |= BEthrow; | |
| 2940 return result; | |
| 2941 } | |
| 2942 | |
| 159 | 2943 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2944 { | |
| 2945 buf->printf("return "); | |
| 2946 if (exp) | |
| 2947 exp->toCBuffer(buf, hgs); | |
| 2948 buf->writeByte(';'); | |
| 2949 buf->writenl(); | |
| 2950 } | |
| 2951 | |
| 2952 /******************************** BreakStatement ***************************/ | |
| 2953 | |
| 2954 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 2955 : Statement(loc) | |
| 2956 { | |
| 2957 this->ident = ident; | |
| 309 | 2958 this->enclosinghandler = NULL; |
| 159 | 2959 } |
| 2960 | |
| 2961 Statement *BreakStatement::syntaxCopy() | |
| 2962 { | |
| 2963 BreakStatement *s = new BreakStatement(loc, ident); | |
| 2964 return s; | |
| 2965 } | |
| 2966 | |
| 2967 Statement *BreakStatement::semantic(Scope *sc) | |
| 2968 { | |
| 336 | 2969 //printf("BreakStatement::semantic()\n"); |
| 309 | 2970 enclosinghandler = sc->tfOfTry; |
| 159 | 2971 // If: |
| 2972 // break Identifier; | |
| 2973 if (ident) | |
| 2974 { | |
| 2975 Scope *scx; | |
| 2976 FuncDeclaration *thisfunc = sc->func; | |
| 2977 | |
| 2978 for (scx = sc; scx; scx = scx->enclosing) | |
| 2979 { | |
| 2980 LabelStatement *ls; | |
| 2981 | |
| 2982 if (scx->func != thisfunc) // if in enclosing function | |
| 2983 { | |
| 2984 if (sc->fes) // if this is the body of a foreach | |
| 2985 { | |
| 2986 /* Post this statement to the fes, and replace | |
| 2987 * it with a return value that caller will put into | |
| 2988 * a switch. Caller will figure out where the break | |
| 2989 * label actually is. | |
| 2990 * Case numbers start with 2, not 0, as 0 is continue | |
| 2991 * and 1 is break. | |
| 2992 */ | |
| 2993 Statement *s; | |
| 2994 sc->fes->cases.push(this); | |
| 2995 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 2996 return s; | |
| 2997 } | |
| 2998 break; // can't break to it | |
| 2999 } | |
| 3000 | |
| 3001 ls = scx->slabel; | |
| 3002 if (ls && ls->ident == ident) | |
| 3003 { | |
| 3004 Statement *s = ls->statement; | |
| 3005 | |
| 3006 if (!s->hasBreak()) | |
| 3007 error("label '%s' has no break", ident->toChars()); | |
| 3008 if (ls->tf != sc->tf) | |
| 3009 error("cannot break out of finally block"); | |
| 3010 | |
| 3011 this->target = ls; | |
| 3012 return this; | |
| 3013 } | |
| 3014 } | |
| 3015 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 3016 } | |
| 3017 else if (!sc->sbreak) | |
| 3018 { | |
| 3019 if (sc->fes) | |
| 3020 { Statement *s; | |
| 3021 | |
| 3022 // Replace break; with return 1; | |
| 3023 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 3024 return s; | |
| 3025 } | |
| 3026 error("break is not inside a loop or switch"); | |
| 3027 } | |
| 3028 return this; | |
| 3029 } | |
| 3030 | |
| 336 | 3031 int BreakStatement::blockExit() |
| 3032 { | |
| 3033 //printf("BreakStatement::blockExit(%p) = x%x\n", this, ident ? BEgoto : BEbreak); | |
| 3034 return ident ? BEgoto : BEbreak; | |
| 3035 } | |
| 3036 | |
| 159 | 3037 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3038 { | |
| 3039 buf->writestring("break"); | |
| 3040 if (ident) | |
| 3041 { buf->writebyte(' '); | |
| 3042 buf->writestring(ident->toChars()); | |
| 3043 } | |
| 3044 buf->writebyte(';'); | |
| 3045 buf->writenl(); | |
| 3046 } | |
| 3047 | |
| 3048 /******************************** ContinueStatement ***************************/ | |
| 3049 | |
| 3050 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 3051 : Statement(loc) | |
| 3052 { | |
| 3053 this->ident = ident; | |
| 309 | 3054 this->enclosinghandler = NULL; |
| 159 | 3055 } |
| 3056 | |
| 3057 Statement *ContinueStatement::syntaxCopy() | |
| 3058 { | |
| 3059 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 3060 return s; | |
| 3061 } | |
| 3062 | |
| 3063 Statement *ContinueStatement::semantic(Scope *sc) | |
| 3064 { | |
| 309 | 3065 enclosinghandler = sc->tfOfTry; |
| 159 | 3066 //printf("ContinueStatement::semantic() %p\n", this); |
| 3067 if (ident) | |
| 3068 { | |
| 3069 Scope *scx; | |
| 3070 FuncDeclaration *thisfunc = sc->func; | |
| 3071 | |
| 3072 for (scx = sc; scx; scx = scx->enclosing) | |
| 3073 { | |
| 3074 LabelStatement *ls; | |
| 3075 | |
| 3076 if (scx->func != thisfunc) // if in enclosing function | |
| 3077 { | |
| 3078 if (sc->fes) // if this is the body of a foreach | |
| 3079 { | |
| 3080 for (; scx; scx = scx->enclosing) | |
| 3081 { | |
| 3082 ls = scx->slabel; | |
| 3083 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 3084 { | |
| 3085 // Replace continue ident; with return 0; | |
| 3086 return new ReturnStatement(0, new IntegerExp(0)); | |
| 3087 } | |
| 3088 } | |
| 3089 | |
| 3090 /* Post this statement to the fes, and replace | |
| 3091 * it with a return value that caller will put into | |
| 3092 * a switch. Caller will figure out where the break | |
| 3093 * label actually is. | |
| 3094 * Case numbers start with 2, not 0, as 0 is continue | |
| 3095 * and 1 is break. | |
| 3096 */ | |
| 3097 Statement *s; | |
| 3098 sc->fes->cases.push(this); | |
| 3099 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3100 return s; | |
| 3101 } | |
| 3102 break; // can't continue to it | |
| 3103 } | |
| 3104 | |
| 3105 ls = scx->slabel; | |
| 3106 if (ls && ls->ident == ident) | |
| 3107 { | |
| 3108 Statement *s = ls->statement; | |
| 3109 | |
| 3110 if (!s->hasContinue()) | |
| 3111 error("label '%s' has no continue", ident->toChars()); | |
| 3112 if (ls->tf != sc->tf) | |
| 3113 error("cannot continue out of finally block"); | |
| 3114 | |
| 3115 this->target = ls; | |
| 3116 return this; | |
| 3117 } | |
| 3118 } | |
| 3119 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 3120 } | |
| 3121 else if (!sc->scontinue) | |
| 3122 { | |
| 3123 if (sc->fes) | |
| 3124 { Statement *s; | |
| 3125 | |
| 3126 // Replace continue; with return 0; | |
| 3127 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 3128 return s; | |
| 3129 } | |
| 3130 error("continue is not inside a loop"); | |
| 3131 } | |
| 3132 return this; | |
| 3133 } | |
| 3134 | |
| 336 | 3135 int ContinueStatement::blockExit() |
| 3136 { | |
| 3137 return ident ? BEgoto : BEcontinue; | |
| 3138 } | |
| 3139 | |
| 159 | 3140 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3141 { | |
| 3142 buf->writestring("continue"); | |
| 3143 if (ident) | |
| 3144 { buf->writebyte(' '); | |
| 3145 buf->writestring(ident->toChars()); | |
| 3146 } | |
| 3147 buf->writebyte(';'); | |
| 3148 buf->writenl(); | |
| 3149 } | |
| 3150 | |
| 3151 /******************************** SynchronizedStatement ***************************/ | |
| 3152 | |
| 3153 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 3154 : Statement(loc) | |
| 3155 { | |
| 3156 this->exp = exp; | |
| 3157 this->body = body; | |
| 3158 this->esync = NULL; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
3159 this->enclosinghandler = NULL; |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3160 // LDC |
| 309 | 3161 this->llsync = NULL; |
| 159 | 3162 } |
| 3163 | |
| 3164 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 3165 : Statement(loc) | |
| 3166 { | |
| 3167 this->exp = NULL; | |
| 3168 this->body = body; | |
| 3169 this->esync = esync; | |
|
310
d20cf0dec9c1
[svn r331] Fixed, forgot to default initialize the SynchronizedStatement enclosinghandler.
lindquist
parents:
309
diff
changeset
|
3170 this->enclosinghandler = NULL; |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3171 // LDC |
| 309 | 3172 this->llsync = NULL; |
| 159 | 3173 } |
| 3174 | |
| 3175 Statement *SynchronizedStatement::syntaxCopy() | |
| 3176 { | |
| 3177 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3178 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 3179 return s; | |
| 3180 } | |
| 3181 | |
| 3182 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 3183 { | |
| 3184 if (exp) | |
| 3185 { ClassDeclaration *cd; | |
| 3186 | |
| 3187 exp = exp->semantic(sc); | |
| 3188 exp = resolveProperties(sc, exp); | |
| 3189 cd = exp->type->isClassHandle(); | |
| 3190 if (!cd) | |
| 3191 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 3192 else if (cd->isInterfaceDeclaration()) | |
| 3193 { Type *t = new TypeIdentifier(0, Id::Object); | |
| 3194 | |
| 3195 t = t->semantic(0, sc); | |
| 3196 exp = new CastExp(loc, exp, t); | |
| 3197 exp = exp->semantic(sc); | |
| 3198 } | |
| 3199 } | |
| 3200 if (body) | |
| 309 | 3201 { |
| 3202 enclosinghandler = sc->tfOfTry; | |
| 3203 sc->tfOfTry = new EnclosingSynchro(this); | |
| 3204 body = body->semantic(sc); | |
| 3205 sc->tfOfTry = enclosinghandler; | |
| 3206 } | |
| 159 | 3207 return this; |
| 3208 } | |
| 3209 | |
| 3210 int SynchronizedStatement::hasBreak() | |
| 3211 { | |
| 3212 return FALSE; //TRUE; | |
| 3213 } | |
| 3214 | |
| 3215 int SynchronizedStatement::hasContinue() | |
| 3216 { | |
| 3217 return FALSE; //TRUE; | |
| 3218 } | |
| 3219 | |
| 3220 int SynchronizedStatement::usesEH() | |
| 3221 { | |
| 3222 return TRUE; | |
| 3223 } | |
| 3224 | |
| 336 | 3225 int SynchronizedStatement::blockExit() |
| 3226 { | |
| 3227 return body ? body->blockExit() : BEfallthru; | |
| 3228 } | |
| 3229 | |
| 159 | 3230 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3231 { | |
| 3232 buf->writestring("synchronized"); | |
| 3233 if (exp) | |
| 3234 { buf->writebyte('('); | |
| 3235 exp->toCBuffer(buf, hgs); | |
| 3236 buf->writebyte(')'); | |
| 3237 } | |
| 3238 if (body) | |
| 3239 { | |
| 3240 buf->writebyte(' '); | |
| 3241 body->toCBuffer(buf, hgs); | |
| 3242 } | |
| 3243 } | |
| 3244 | |
| 3245 /******************************** WithStatement ***************************/ | |
| 3246 | |
| 3247 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 3248 : Statement(loc) | |
| 3249 { | |
| 3250 this->exp = exp; | |
| 3251 this->body = body; | |
| 3252 wthis = NULL; | |
| 3253 } | |
| 3254 | |
| 3255 Statement *WithStatement::syntaxCopy() | |
| 3256 { | |
| 3257 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 3258 return s; | |
| 3259 } | |
| 3260 | |
| 3261 Statement *WithStatement::semantic(Scope *sc) | |
| 3262 { ScopeDsymbol *sym; | |
| 3263 Initializer *init; | |
| 3264 | |
| 3265 //printf("WithStatement::semantic()\n"); | |
| 3266 exp = exp->semantic(sc); | |
| 3267 exp = resolveProperties(sc, exp); | |
| 3268 if (exp->op == TOKimport) | |
| 3269 { ScopeExp *es = (ScopeExp *)exp; | |
| 3270 | |
| 3271 sym = es->sds; | |
| 3272 } | |
| 3273 else if (exp->op == TOKtype) | |
| 3274 { TypeExp *es = (TypeExp *)exp; | |
| 3275 | |
| 3276 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 3277 if (!sym) | |
| 3278 { error("%s has no members", es->toChars()); | |
| 3279 body = body->semantic(sc); | |
| 3280 return this; | |
| 3281 } | |
| 3282 } | |
| 3283 else | |
| 3284 { Type *t = exp->type; | |
| 3285 | |
| 3286 assert(t); | |
| 3287 t = t->toBasetype(); | |
| 3288 if (t->isClassHandle()) | |
| 3289 { | |
| 3290 init = new ExpInitializer(loc, exp); | |
| 3291 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3292 wthis->semantic(sc); | |
| 3293 | |
| 3294 sym = new WithScopeSymbol(this); | |
| 3295 sym->parent = sc->scopesym; | |
| 3296 } | |
| 3297 else if (t->ty == Tstruct) | |
| 3298 { | |
| 3299 Expression *e = exp->addressOf(sc); | |
| 3300 init = new ExpInitializer(loc, e); | |
| 3301 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3302 wthis->semantic(sc); | |
| 3303 sym = new WithScopeSymbol(this); | |
| 3304 sym->parent = sc->scopesym; | |
| 3305 } | |
| 3306 else | |
| 3307 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3308 return NULL; | |
| 3309 } | |
| 3310 } | |
| 3311 sc = sc->push(sym); | |
| 3312 | |
| 3313 if (body) | |
| 3314 body = body->semantic(sc); | |
| 3315 | |
| 3316 sc->pop(); | |
| 3317 | |
| 3318 return this; | |
| 3319 } | |
| 3320 | |
| 3321 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3322 { | |
| 3323 buf->writestring("with ("); | |
| 3324 exp->toCBuffer(buf, hgs); | |
| 3325 buf->writestring(")\n"); | |
| 3326 if (body) | |
| 3327 body->toCBuffer(buf, hgs); | |
| 3328 } | |
| 3329 | |
| 3330 int WithStatement::usesEH() | |
| 3331 { | |
| 3332 return body ? body->usesEH() : 0; | |
| 3333 } | |
| 3334 | |
| 336 | 3335 int WithStatement::blockExit() |
| 3336 { | |
| 3337 int result = BEnone; | |
| 3338 if (exp->canThrow()) | |
| 3339 result = BEthrow; | |
| 3340 if (body) | |
| 3341 result |= body->blockExit(); | |
| 3342 else | |
| 3343 result |= BEfallthru; | |
| 3344 return result; | |
| 3345 } | |
| 3346 | |
| 159 | 3347 /******************************** TryCatchStatement ***************************/ |
| 3348 | |
| 3349 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3350 : Statement(loc) | |
| 3351 { | |
| 3352 this->body = body; | |
| 3353 this->catches = catches; | |
| 3354 } | |
| 3355 | |
| 3356 Statement *TryCatchStatement::syntaxCopy() | |
| 3357 { | |
| 3358 Array *a = new Array(); | |
| 3359 a->setDim(catches->dim); | |
| 3360 for (int i = 0; i < a->dim; i++) | |
| 3361 { Catch *c; | |
| 3362 | |
| 3363 c = (Catch *)catches->data[i]; | |
| 3364 c = c->syntaxCopy(); | |
| 3365 a->data[i] = c; | |
| 3366 } | |
| 3367 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3368 return s; | |
| 3369 } | |
| 3370 | |
| 3371 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3372 { | |
| 3373 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3374 | |
| 336 | 3375 /* Even if body is NULL, still do semantic analysis on catches |
| 3376 */ | |
| 3377 for (size_t i = 0; i < catches->dim; i++) | |
| 3378 { Catch *c = (Catch *)catches->data[i]; | |
| 159 | 3379 c->semantic(sc); |
| 3380 | |
| 3381 // Determine if current catch 'hides' any previous catches | |
| 336 | 3382 for (size_t j = 0; j < i; j++) |
| 159 | 3383 { Catch *cj = (Catch *)catches->data[j]; |
| 3384 char *si = c->loc.toChars(); | |
| 3385 char *sj = cj->loc.toChars(); | |
| 3386 | |
| 3387 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3388 error("catch at %s hides catch at %s", sj, si); | |
| 3389 } | |
| 3390 } | |
| 3391 return this; | |
| 3392 } | |
| 3393 | |
| 3394 int TryCatchStatement::hasBreak() | |
| 3395 { | |
| 3396 return FALSE; //TRUE; | |
| 3397 } | |
| 3398 | |
| 3399 int TryCatchStatement::usesEH() | |
| 3400 { | |
| 3401 return TRUE; | |
| 3402 } | |
| 3403 | |
| 336 | 3404 int TryCatchStatement::blockExit() |
| 3405 { int result; | |
| 3406 | |
| 3407 assert(body); | |
| 3408 result = body->blockExit(); | |
| 3409 | |
| 3410 for (size_t i = 0; i < catches->dim; i++) | |
| 3411 { | |
| 3412 Catch *c = (Catch *)catches->data[i]; | |
| 3413 result |= c->blockExit(); | |
| 3414 } | |
| 3415 return result; | |
| 3416 } | |
| 3417 | |
| 159 | 3418 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3419 { | |
| 3420 buf->writestring("try"); | |
| 3421 buf->writenl(); | |
| 3422 if (body) | |
| 3423 body->toCBuffer(buf, hgs); | |
| 336 | 3424 for (size_t i = 0; i < catches->dim; i++) |
| 159 | 3425 { |
| 3426 Catch *c = (Catch *)catches->data[i]; | |
| 3427 c->toCBuffer(buf, hgs); | |
| 3428 } | |
| 3429 } | |
| 3430 | |
| 3431 /******************************** Catch ***************************/ | |
| 3432 | |
| 3433 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 3434 { | |
| 3435 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 3436 this->loc = loc; | |
| 3437 this->type = t; | |
| 3438 this->ident = id; | |
| 3439 this->handler = handler; | |
| 3440 var = NULL; | |
| 3441 } | |
| 3442 | |
| 3443 Catch *Catch::syntaxCopy() | |
| 3444 { | |
| 3445 Catch *c = new Catch(loc, | |
| 3446 (type ? type->syntaxCopy() : NULL), | |
| 3447 ident, | |
| 3448 (handler ? handler->syntaxCopy() : NULL)); | |
| 3449 return c; | |
| 3450 } | |
| 3451 | |
| 3452 void Catch::semantic(Scope *sc) | |
| 3453 { ScopeDsymbol *sym; | |
| 3454 | |
| 3455 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 3456 | |
| 3457 #ifndef IN_GCC | |
| 3458 if (sc->tf) | |
| 3459 { | |
| 3460 /* This is because the _d_local_unwind() gets the stack munged | |
| 3461 * up on this. The workaround is to place any try-catches into | |
| 3462 * a separate function, and call that. | |
| 3463 * To fix, have the compiler automatically convert the finally | |
| 3464 * body into a nested function. | |
| 3465 */ | |
| 3466 error(loc, "cannot put catch statement inside finally block"); | |
| 3467 } | |
| 3468 #endif | |
| 3469 | |
| 3470 sym = new ScopeDsymbol(); | |
| 3471 sym->parent = sc->scopesym; | |
| 3472 sc = sc->push(sym); | |
| 3473 | |
| 3474 if (!type) | |
| 3475 type = new TypeIdentifier(0, Id::Object); | |
| 3476 type = type->semantic(loc, sc); | |
| 3477 if (!type->toBasetype()->isClassHandle()) | |
| 3478 error("can only catch class objects, not '%s'", type->toChars()); | |
| 3479 else if (ident) | |
| 3480 { | |
| 3481 var = new VarDeclaration(loc, type, ident, NULL); | |
| 3482 var->parent = sc->parent; | |
| 3483 sc->insert(var); | |
| 3484 } | |
| 3485 handler = handler->semantic(sc); | |
| 3486 | |
| 3487 sc->pop(); | |
| 3488 } | |
| 3489 | |
| 336 | 3490 int Catch::blockExit() |
| 3491 { | |
| 3492 return handler ? handler->blockExit() : BEfallthru; | |
| 3493 } | |
| 3494 | |
| 159 | 3495 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3496 { | |
| 3497 buf->writestring("catch"); | |
| 3498 if (type) | |
| 3499 { buf->writebyte('('); | |
| 3500 type->toCBuffer(buf, ident, hgs); | |
| 3501 buf->writebyte(')'); | |
| 3502 } | |
| 3503 buf->writenl(); | |
| 3504 buf->writebyte('{'); | |
| 3505 buf->writenl(); | |
| 336 | 3506 if (handler) |
| 3507 handler->toCBuffer(buf, hgs); | |
| 159 | 3508 buf->writebyte('}'); |
| 3509 buf->writenl(); | |
| 3510 } | |
| 3511 | |
| 3512 /****************************** TryFinallyStatement ***************************/ | |
| 3513 | |
| 3514 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 3515 : Statement(loc) | |
| 3516 { | |
| 3517 this->body = body; | |
| 3518 this->finalbody = finalbody; | |
| 309 | 3519 this->enclosinghandler = NULL; |
| 159 | 3520 } |
| 3521 | |
| 3522 Statement *TryFinallyStatement::syntaxCopy() | |
| 3523 { | |
| 3524 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 3525 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 3526 return s; | |
| 3527 } | |
| 3528 | |
| 3529 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 3530 { | |
| 3531 //printf("TryFinallyStatement::semantic()\n"); | |
| 3532 | |
| 309 | 3533 enclosinghandler = sc->tfOfTry; |
| 3534 sc->tfOfTry = new EnclosingTryFinally(this); | |
| 159 | 3535 body = body->semantic(sc); |
| 309 | 3536 sc->tfOfTry = enclosinghandler; |
| 159 | 3537 |
| 3538 sc = sc->push(); | |
| 3539 sc->tf = this; | |
| 3540 sc->sbreak = NULL; | |
| 3541 sc->scontinue = NULL; // no break or continue out of finally block | |
| 3542 finalbody = finalbody->semantic(sc); | |
| 3543 sc->pop(); | |
| 3544 return this; | |
| 3545 } | |
| 3546 | |
| 3547 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3548 { | |
| 3549 buf->printf("try\n{\n"); | |
| 3550 body->toCBuffer(buf, hgs); | |
| 3551 buf->printf("}\nfinally\n{\n"); | |
| 3552 finalbody->toCBuffer(buf, hgs); | |
| 3553 buf->writeByte('}'); | |
| 3554 buf->writenl(); | |
| 3555 } | |
| 3556 | |
| 3557 int TryFinallyStatement::hasBreak() | |
| 3558 { | |
| 3559 return FALSE; //TRUE; | |
| 3560 } | |
| 3561 | |
| 3562 int TryFinallyStatement::hasContinue() | |
| 3563 { | |
| 3564 return FALSE; //TRUE; | |
| 3565 } | |
| 3566 | |
| 3567 int TryFinallyStatement::usesEH() | |
| 3568 { | |
| 3569 return TRUE; | |
| 3570 } | |
| 3571 | |
| 336 | 3572 int TryFinallyStatement::blockExit() |
| 3573 { | |
|
875
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
846
diff
changeset
|
3574 if (body) |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
846
diff
changeset
|
3575 return body->blockExit(); |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
846
diff
changeset
|
3576 return BEfallthru; |
| 336 | 3577 } |
| 3578 | |
| 159 | 3579 |
| 3580 /****************************** OnScopeStatement ***************************/ | |
| 3581 | |
| 3582 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 3583 : Statement(loc) | |
| 3584 { | |
| 3585 this->tok = tok; | |
| 3586 this->statement = statement; | |
| 3587 } | |
| 3588 | |
| 3589 Statement *OnScopeStatement::syntaxCopy() | |
| 3590 { | |
| 3591 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 3592 tok, statement->syntaxCopy()); | |
| 3593 return s; | |
| 3594 } | |
| 3595 | |
| 3596 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 3597 { | |
| 3598 /* semantic is called on results of scopeCode() */ | |
| 3599 return this; | |
| 3600 } | |
| 3601 | |
| 336 | 3602 int OnScopeStatement::blockExit() |
| 3603 { // At this point, this statement is just an empty placeholder | |
| 3604 return BEfallthru; | |
| 3605 } | |
| 3606 | |
| 159 | 3607 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3608 { | |
| 3609 buf->writestring(Token::toChars(tok)); | |
| 3610 buf->writebyte(' '); | |
| 3611 statement->toCBuffer(buf, hgs); | |
| 3612 } | |
| 3613 | |
| 3614 int OnScopeStatement::usesEH() | |
| 3615 { | |
| 3616 return (tok != TOKon_scope_success); | |
| 3617 } | |
| 3618 | |
| 3619 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 3620 { | |
| 3621 //printf("OnScopeStatement::scopeCode()\n"); | |
| 3622 //print(); | |
| 3623 *sentry = NULL; | |
| 3624 *sexception = NULL; | |
| 3625 *sfinally = NULL; | |
| 3626 switch (tok) | |
| 3627 { | |
| 3628 case TOKon_scope_exit: | |
| 3629 *sfinally = statement; | |
| 3630 break; | |
| 3631 | |
| 3632 case TOKon_scope_failure: | |
| 3633 *sexception = statement; | |
| 3634 break; | |
| 3635 | |
| 3636 case TOKon_scope_success: | |
| 3637 { | |
| 3638 /* Create: | |
| 3639 * sentry: int x = 0; | |
| 3640 * sexception: x = 1; | |
| 3641 * sfinally: if (!x) statement; | |
| 3642 */ | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3643 Identifier *id = Lexer::uniqueId("__os"); |
| 159 | 3644 |
| 3645 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 3646 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 3647 *sentry = new DeclarationStatement(loc, v); | |
| 3648 | |
| 3649 Expression *e = new IntegerExp(1); | |
| 3650 e = new AssignExp(0, new VarExp(0, v), e); | |
| 3651 *sexception = new ExpStatement(0, e); | |
| 3652 | |
| 3653 e = new VarExp(0, v); | |
| 3654 e = new NotExp(0, e); | |
| 3655 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 3656 | |
| 3657 break; | |
| 3658 } | |
| 3659 | |
| 3660 default: | |
| 3661 assert(0); | |
| 3662 } | |
| 3663 } | |
| 3664 | |
| 3665 /******************************** ThrowStatement ***************************/ | |
| 3666 | |
| 3667 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 3668 : Statement(loc) | |
| 3669 { | |
| 3670 this->exp = exp; | |
| 3671 } | |
| 3672 | |
| 3673 Statement *ThrowStatement::syntaxCopy() | |
| 3674 { | |
| 3675 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 3676 return s; | |
| 3677 } | |
| 3678 | |
| 3679 Statement *ThrowStatement::semantic(Scope *sc) | |
| 3680 { | |
| 3681 //printf("ThrowStatement::semantic()\n"); | |
| 3682 | |
| 3683 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3684 fd->hasReturnExp |= 2; | |
| 3685 | |
| 3686 if (sc->incontract) | |
| 3687 error("Throw statements cannot be in contracts"); | |
| 3688 exp = exp->semantic(sc); | |
| 3689 exp = resolveProperties(sc, exp); | |
| 3690 if (!exp->type->toBasetype()->isClassHandle()) | |
| 3691 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 3692 return this; | |
| 3693 } | |
| 3694 | |
| 336 | 3695 int ThrowStatement::blockExit() |
| 3696 { | |
| 3697 return BEthrow; // obviously | |
| 3698 } | |
| 3699 | |
| 159 | 3700 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3701 { | |
| 3702 buf->printf("throw "); | |
| 3703 exp->toCBuffer(buf, hgs); | |
| 3704 buf->writeByte(';'); | |
| 3705 buf->writenl(); | |
| 3706 } | |
| 3707 | |
| 3708 /******************************** VolatileStatement **************************/ | |
| 3709 | |
| 3710 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 3711 : Statement(loc) | |
| 3712 { | |
| 3713 this->statement = statement; | |
| 309 | 3714 this->enclosinghandler = NULL; |
| 159 | 3715 } |
| 3716 | |
| 3717 Statement *VolatileStatement::syntaxCopy() | |
| 3718 { | |
| 3719 VolatileStatement *s = new VolatileStatement(loc, | |
| 3720 statement ? statement->syntaxCopy() : NULL); | |
| 3721 return s; | |
| 3722 } | |
| 3723 | |
| 3724 Statement *VolatileStatement::semantic(Scope *sc) | |
| 3725 { | |
| 309 | 3726 if (statement) |
| 3727 { | |
| 3728 enclosinghandler = sc->tfOfTry; | |
| 3729 sc->tfOfTry = new EnclosingVolatile(this); | |
| 3730 statement = statement->semantic(sc); | |
| 3731 sc->tfOfTry = enclosinghandler; | |
| 3732 } | |
| 159 | 3733 return this; |
| 3734 } | |
| 3735 | |
| 3736 Statements *VolatileStatement::flatten(Scope *sc) | |
| 3737 { | |
| 3738 Statements *a; | |
| 3739 | |
| 3740 a = statement ? statement->flatten(sc) : NULL; | |
| 3741 if (a) | |
| 3742 { for (int i = 0; i < a->dim; i++) | |
| 3743 { Statement *s = (Statement *)a->data[i]; | |
| 3744 | |
| 3745 s = new VolatileStatement(loc, s); | |
| 3746 a->data[i] = s; | |
| 3747 } | |
| 3748 } | |
| 3749 | |
| 3750 return a; | |
| 3751 } | |
| 3752 | |
| 336 | 3753 int VolatileStatement::blockExit() |
| 3754 { | |
| 3755 return statement ? statement->blockExit() : BEfallthru; | |
| 3756 } | |
| 3757 | |
| 159 | 3758 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3759 { | |
| 3760 buf->writestring("volatile"); | |
| 3761 if (statement) | |
| 3762 { if (statement->isScopeStatement()) | |
| 3763 buf->writenl(); | |
| 3764 else | |
| 3765 buf->writebyte(' '); | |
| 3766 statement->toCBuffer(buf, hgs); | |
| 3767 } | |
| 3768 } | |
| 3769 | |
| 3770 | |
| 3771 /******************************** GotoStatement ***************************/ | |
| 3772 | |
| 3773 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 3774 : Statement(loc) | |
| 3775 { | |
| 3776 this->ident = ident; | |
| 3777 this->label = NULL; | |
| 3778 this->tf = NULL; | |
| 309 | 3779 this->enclosinghandler = NULL; |
| 159 | 3780 } |
| 3781 | |
| 3782 Statement *GotoStatement::syntaxCopy() | |
| 3783 { | |
| 3784 GotoStatement *s = new GotoStatement(loc, ident); | |
| 3785 return s; | |
| 3786 } | |
| 3787 | |
| 3788 Statement *GotoStatement::semantic(Scope *sc) | |
| 3789 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3790 | |
| 3791 //printf("GotoStatement::semantic()\n"); | |
| 3792 tf = sc->tf; | |
| 309 | 3793 enclosinghandler = sc->tfOfTry; |
| 159 | 3794 label = fd->searchLabel(ident); |
| 3795 if (!label->statement && sc->fes) | |
| 3796 { | |
| 3797 /* Either the goto label is forward referenced or it | |
| 3798 * is in the function that the enclosing foreach is in. | |
| 3799 * Can't know yet, so wrap the goto in a compound statement | |
| 3800 * so we can patch it later, and add it to a 'look at this later' | |
| 3801 * list. | |
| 3802 */ | |
| 3803 Statements *a = new Statements(); | |
| 3804 Statement *s; | |
| 3805 | |
| 3806 a->push(this); | |
| 3807 s = new CompoundStatement(loc, a); | |
| 3808 sc->fes->gotos.push(s); // 'look at this later' list | |
| 3809 return s; | |
| 3810 } | |
| 3811 if (label->statement && label->statement->tf != sc->tf) | |
| 3812 error("cannot goto in or out of finally block"); | |
| 3813 return this; | |
| 3814 } | |
| 3815 | |
| 336 | 3816 int GotoStatement::blockExit() |
| 3817 { | |
| 3818 //printf("GotoStatement::blockExit(%p)\n", this); | |
| 3819 return BEgoto; | |
| 3820 } | |
| 3821 | |
| 159 | 3822 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3823 { | |
| 3824 buf->writestring("goto "); | |
| 3825 buf->writestring(ident->toChars()); | |
| 3826 buf->writebyte(';'); | |
| 3827 buf->writenl(); | |
| 3828 } | |
| 3829 | |
| 3830 /******************************** LabelStatement ***************************/ | |
| 3831 | |
| 3832 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 3833 : Statement(loc) | |
| 3834 { | |
| 3835 this->ident = ident; | |
| 3836 this->statement = statement; | |
| 3837 this->tf = NULL; | |
| 309 | 3838 this->enclosinghandler = NULL; |
| 159 | 3839 this->lblock = NULL; |
| 3840 this->isReturnLabel = 0; | |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3841 this->asmLabel = false; |
| 159 | 3842 } |
| 3843 | |
| 3844 Statement *LabelStatement::syntaxCopy() | |
| 3845 { | |
| 3846 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 3847 return s; | |
| 3848 } | |
| 3849 | |
| 3850 Statement *LabelStatement::semantic(Scope *sc) | |
| 3851 { LabelDsymbol *ls; | |
| 3852 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3853 | |
| 3854 //printf("LabelStatement::semantic()\n"); | |
| 3855 ls = fd->searchLabel(ident); | |
| 3856 if (ls->statement) | |
| 3857 error("Label '%s' already defined", ls->toChars()); | |
| 3858 else | |
| 3859 ls->statement = this; | |
| 3860 tf = sc->tf; | |
| 309 | 3861 enclosinghandler = sc->tfOfTry; |
| 159 | 3862 sc = sc->push(); |
| 3863 sc->scopesym = sc->enclosing->scopesym; | |
| 3864 sc->callSuper |= CSXlabel; | |
| 3865 sc->slabel = this; | |
| 3866 if (statement) | |
| 3867 statement = statement->semantic(sc); | |
| 3868 sc->pop(); | |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3869 |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3870 // LDC put in labmap |
|
305
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3871 fd->labmap[ident->toChars()] = this; |
|
2b72433d5c8c
[svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents:
304
diff
changeset
|
3872 |
| 159 | 3873 return this; |
| 3874 } | |
| 3875 | |
| 3876 Statements *LabelStatement::flatten(Scope *sc) | |
| 3877 { | |
| 3878 Statements *a = NULL; | |
| 3879 | |
| 3880 if (statement) | |
| 3881 { | |
| 3882 a = statement->flatten(sc); | |
| 3883 if (a) | |
| 3884 { | |
| 3885 if (!a->dim) | |
| 3886 { | |
| 3887 a->push(new ExpStatement(loc, NULL)); | |
| 3888 } | |
| 3889 Statement *s = (Statement *)a->data[0]; | |
| 3890 | |
| 3891 s = new LabelStatement(loc, ident, s); | |
| 3892 a->data[0] = s; | |
| 3893 } | |
| 3894 } | |
| 3895 | |
| 3896 return a; | |
| 3897 } | |
| 3898 | |
| 3899 | |
| 3900 int LabelStatement::usesEH() | |
| 3901 { | |
| 3902 return statement ? statement->usesEH() : FALSE; | |
| 3903 } | |
| 3904 | |
| 336 | 3905 int LabelStatement::blockExit() |
| 3906 { | |
| 3907 //printf("LabelStatement::blockExit(%p)\n", this); | |
| 3908 return statement ? statement->blockExit() : BEfallthru; | |
| 3909 } | |
| 3910 | |
| 159 | 3911 int LabelStatement::comeFrom() |
| 3912 { | |
| 3913 //printf("LabelStatement::comeFrom()\n"); | |
| 3914 return TRUE; | |
| 3915 } | |
| 3916 | |
| 3917 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3918 { | |
| 3919 buf->writestring(ident->toChars()); | |
| 3920 buf->writebyte(':'); | |
| 3921 buf->writenl(); | |
| 3922 if (statement) | |
| 3923 statement->toCBuffer(buf, hgs); | |
| 3924 } | |
| 3925 | |
| 3926 | |
| 3927 /******************************** LabelDsymbol ***************************/ | |
| 3928 | |
| 3929 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 3930 : Dsymbol(ident) | |
| 3931 { | |
| 3932 statement = NULL; | |
| 3933 } | |
| 3934 | |
| 3935 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 3936 { | |
| 3937 return this; | |
| 3938 } |