Mercurial > projects > ldc
annotate dmd/statement.c @ 1640:9bf06e02070b
Merge DMD 1.057.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Mon, 08 Mar 2010 21:39:20 +0100 |
| parents | 44b145be2ef5 |
| children |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
| 1640 | 3 // Copyright (c) 1999-2010 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" |
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30 #include "attrib.h" |
| 159 | 31 |
| 1587 | 32 extern int os_critsecsize(); |
| 33 | |
| 159 | 34 /******************************** Statement ***************************/ |
| 35 | |
| 36 Statement::Statement(Loc loc) | |
| 37 : loc(loc) | |
| 38 { | |
| 39 #ifdef _DH | |
| 40 // If this is an in{} contract scope statement (skip for determining | |
| 41 // inlineStatus of a function body for header content) | |
| 42 incontract = 0; | |
| 43 #endif | |
| 44 } | |
| 45 | |
| 46 Statement *Statement::syntaxCopy() | |
| 47 { | |
| 48 assert(0); | |
| 49 return NULL; | |
| 50 } | |
| 51 | |
| 52 void Statement::print() | |
| 53 { | |
| 54 fprintf(stdmsg, "%s\n", toChars()); | |
| 55 fflush(stdmsg); | |
| 56 } | |
| 57 | |
| 58 char *Statement::toChars() | |
| 59 { OutBuffer *buf; | |
| 60 HdrGenState hgs; | |
| 61 | |
| 62 buf = new OutBuffer(); | |
| 63 toCBuffer(buf, &hgs); | |
| 64 return buf->toChars(); | |
| 65 } | |
| 66 | |
| 67 void Statement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 68 { | |
| 69 buf->printf("Statement::toCBuffer()"); | |
| 70 buf->writenl(); | |
| 71 } | |
| 72 | |
| 73 Statement *Statement::semantic(Scope *sc) | |
| 74 { | |
| 75 return this; | |
| 76 } | |
| 77 | |
| 78 // Same as semantic(), but do create a new scope | |
| 79 | |
| 80 Statement *Statement::semanticScope(Scope *sc, Statement *sbreak, Statement *scontinue) | |
| 81 { Scope *scd; | |
| 82 Statement *s; | |
| 83 | |
| 84 scd = sc->push(); | |
| 85 if (sbreak) | |
| 86 scd->sbreak = sbreak; | |
| 87 if (scontinue) | |
| 88 scd->scontinue = scontinue; | |
| 89 s = semantic(scd); | |
| 90 scd->pop(); | |
| 91 return s; | |
| 92 } | |
| 93 | |
| 94 void Statement::error(const char *format, ...) | |
| 95 { | |
| 96 va_list ap; | |
| 97 va_start(ap, format); | |
| 98 ::verror(loc, format, ap); | |
| 99 va_end( ap ); | |
| 100 } | |
| 101 | |
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102 void Statement::warning(const char *format, ...) |
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103 { |
| 1640 | 104 va_list ap; |
| 105 va_start(ap, format); | |
| 106 ::vwarning(loc, format, ap); | |
| 107 va_end( ap ); | |
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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 | |
| 1587 | 146 // Return TRUE if statement has no code in it |
| 147 int Statement::isEmpty() | |
| 148 { | |
| 149 //printf("Statement::isEmpty()\n"); | |
| 150 return FALSE; | |
| 151 } | |
| 152 | |
| 159 | 153 /**************************************** |
| 154 * If this statement has code that needs to run in a finally clause | |
| 155 * at the end of the current scope, return that code in the form of | |
| 156 * a Statement. | |
| 157 * Output: | |
| 158 * *sentry code executed upon entry to the scope | |
| 159 * *sexception code executed upon exit from the scope via exception | |
| 160 * *sfinally code executed in finally block | |
| 161 */ | |
| 162 | |
| 1587 | 163 void Statement::scopeCode(Scope *sc, Statement **sentry, Statement **sexception, Statement **sfinally) |
| 159 | 164 { |
| 165 //printf("Statement::scopeCode()\n"); | |
| 166 //print(); | |
| 167 *sentry = NULL; | |
| 168 *sexception = NULL; | |
| 169 *sfinally = NULL; | |
| 170 } | |
| 171 | |
| 172 /********************************* | |
| 173 * Flatten out the scope by presenting the statement | |
| 174 * as an array of statements. | |
| 175 * Returns NULL if no flattening necessary. | |
| 176 */ | |
| 177 | |
| 178 Statements *Statement::flatten(Scope *sc) | |
| 179 { | |
| 180 return NULL; | |
| 181 } | |
| 182 | |
| 183 | |
| 1587 | 184 /******************************** PeelStatement ***************************/ |
| 185 | |
| 186 PeelStatement::PeelStatement(Statement *s) | |
| 187 : Statement(s->loc) | |
| 188 { | |
| 189 this->s = s; | |
| 190 } | |
| 191 | |
| 192 Statement *PeelStatement::semantic(Scope *sc) | |
| 193 { | |
| 194 /* "peel" off this wrapper, and don't run semantic() | |
| 195 * on the result. | |
| 196 */ | |
| 197 return s; | |
| 198 } | |
| 199 | |
| 159 | 200 /******************************** ExpStatement ***************************/ |
| 201 | |
| 202 ExpStatement::ExpStatement(Loc loc, Expression *exp) | |
| 203 : Statement(loc) | |
| 204 { | |
| 205 this->exp = exp; | |
| 206 } | |
| 207 | |
| 208 Statement *ExpStatement::syntaxCopy() | |
| 209 { | |
| 210 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 211 ExpStatement *es = new ExpStatement(loc, e); | |
| 212 return es; | |
| 213 } | |
| 214 | |
| 215 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 216 { | |
| 217 if (exp) | |
| 218 exp->toCBuffer(buf, hgs); | |
| 219 buf->writeByte(';'); | |
| 220 if (!hgs->FLinit.init) | |
| 221 buf->writenl(); | |
| 222 } | |
| 223 | |
| 224 Statement *ExpStatement::semantic(Scope *sc) | |
| 225 { | |
| 226 if (exp) | |
| 227 { | |
| 228 //printf("ExpStatement::semantic() %s\n", exp->toChars()); | |
| 229 exp = exp->semantic(sc); | |
| 230 exp = resolveProperties(sc, exp); | |
| 231 exp->checkSideEffect(0); | |
| 232 exp = exp->optimize(0); | |
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233 if (exp->op == TOKdeclaration && !isDeclarationStatement()) |
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234 { Statement *s = new DeclarationStatement(loc, exp); |
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235 return s; |
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236 } |
| 159 | 237 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0); |
| 238 } | |
| 239 return this; | |
| 240 } | |
| 241 | |
| 336 | 242 int ExpStatement::blockExit() |
| 243 { int result = BEfallthru; | |
| 244 | |
| 245 if (exp) | |
| 246 { | |
| 247 if (exp->op == TOKhalt) | |
| 248 return BEhalt; | |
| 249 if (exp->op == TOKassert) | |
| 250 { AssertExp *a = (AssertExp *)exp; | |
| 251 | |
| 252 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 253 return BEhalt; | |
| 254 } | |
| 255 if (exp->canThrow()) | |
| 256 result |= BEthrow; | |
| 257 } | |
| 258 return result; | |
| 259 } | |
| 260 | |
| 1587 | 261 int ExpStatement::isEmpty() |
| 262 { | |
| 263 return exp == NULL; | |
| 264 } | |
| 265 | |
| 159 | 266 |
| 267 /******************************** CompileStatement ***************************/ | |
| 268 | |
| 269 CompileStatement::CompileStatement(Loc loc, Expression *exp) | |
| 270 : Statement(loc) | |
| 271 { | |
| 272 this->exp = exp; | |
| 273 } | |
| 274 | |
| 275 Statement *CompileStatement::syntaxCopy() | |
| 276 { | |
| 277 Expression *e = exp->syntaxCopy(); | |
| 278 CompileStatement *es = new CompileStatement(loc, e); | |
| 279 return es; | |
| 280 } | |
| 281 | |
| 282 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 283 { | |
| 284 buf->writestring("mixin("); | |
| 285 exp->toCBuffer(buf, hgs); | |
| 286 buf->writestring(");"); | |
| 287 if (!hgs->FLinit.init) | |
| 288 buf->writenl(); | |
| 289 } | |
| 290 | |
| 336 | 291 Statements *CompileStatement::flatten(Scope *sc) |
| 159 | 292 { |
| 336 | 293 //printf("CompileStatement::flatten() %s\n", exp->toChars()); |
| 159 | 294 exp = exp->semantic(sc); |
| 295 exp = resolveProperties(sc, exp); | |
| 296 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 297 if (exp->op != TOKstring) | |
| 298 { error("argument to mixin must be a string, not (%s)", exp->toChars()); | |
| 336 | 299 return NULL; |
| 159 | 300 } |
| 301 StringExp *se = (StringExp *)exp; | |
| 302 se = se->toUTF8(sc); | |
| 303 Parser p(sc->module, (unsigned char *)se->string, se->len, 0); | |
| 304 p.loc = loc; | |
| 305 p.nextToken(); | |
| 306 | |
| 336 | 307 Statements *a = new Statements(); |
| 159 | 308 while (p.token.value != TOKeof) |
| 309 { | |
| 310 Statement *s = p.parseStatement(PSsemi | PScurlyscope); | |
| 336 | 311 a->push(s); |
| 159 | 312 } |
| 336 | 313 return a; |
| 314 } | |
| 315 | |
| 316 Statement *CompileStatement::semantic(Scope *sc) | |
| 317 { | |
| 318 //printf("CompileStatement::semantic() %s\n", exp->toChars()); | |
| 319 Statements *a = flatten(sc); | |
| 320 if (!a) | |
| 321 return NULL; | |
| 322 Statement *s = new CompoundStatement(loc, a); | |
| 159 | 323 return s->semantic(sc); |
| 324 } | |
| 325 | |
| 326 | |
| 327 /******************************** DeclarationStatement ***************************/ | |
| 328 | |
| 329 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration) | |
| 330 : ExpStatement(loc, new DeclarationExp(loc, declaration)) | |
| 331 { | |
| 332 } | |
| 333 | |
| 334 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp) | |
| 335 : ExpStatement(loc, exp) | |
| 336 { | |
| 337 } | |
| 338 | |
| 339 Statement *DeclarationStatement::syntaxCopy() | |
| 340 { | |
| 341 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy()); | |
| 342 return ds; | |
| 343 } | |
| 344 | |
| 1587 | 345 void DeclarationStatement::scopeCode(Scope *sc, Statement **sentry, Statement **sexception, Statement **sfinally) |
| 159 | 346 { |
| 347 //printf("DeclarationStatement::scopeCode()\n"); | |
| 348 //print(); | |
| 349 | |
| 350 *sentry = NULL; | |
| 351 *sexception = NULL; | |
| 352 *sfinally = NULL; | |
| 353 | |
| 354 if (exp) | |
| 355 { | |
| 356 if (exp->op == TOKdeclaration) | |
| 357 { | |
| 358 DeclarationExp *de = (DeclarationExp *)(exp); | |
| 359 VarDeclaration *v = de->declaration->isVarDeclaration(); | |
| 360 if (v) | |
| 361 { Expression *e; | |
| 362 | |
| 1587 | 363 e = v->callScopeDtor(sc); |
| 159 | 364 if (e) |
| 365 { | |
| 366 //printf("dtor is: "); e->print(); | |
| 367 *sfinally = new ExpStatement(loc, e); | |
| 368 } | |
| 369 } | |
| 370 } | |
| 371 } | |
| 372 } | |
| 373 | |
| 374 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 375 { | |
| 376 exp->toCBuffer(buf, hgs); | |
| 377 } | |
| 378 | |
| 379 | |
| 380 /******************************** CompoundStatement ***************************/ | |
| 381 | |
| 382 CompoundStatement::CompoundStatement(Loc loc, Statements *s) | |
| 383 : Statement(loc) | |
| 384 { | |
| 385 statements = s; | |
| 386 } | |
| 387 | |
| 388 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2) | |
| 389 : Statement(loc) | |
| 390 { | |
| 391 statements = new Statements(); | |
| 392 statements->reserve(2); | |
| 393 statements->push(s1); | |
| 394 statements->push(s2); | |
| 395 } | |
| 396 | |
| 397 Statement *CompoundStatement::syntaxCopy() | |
| 398 { | |
| 399 Statements *a = new Statements(); | |
| 400 a->setDim(statements->dim); | |
| 401 for (size_t i = 0; i < statements->dim; i++) | |
| 402 { Statement *s = (Statement *)statements->data[i]; | |
| 403 if (s) | |
| 404 s = s->syntaxCopy(); | |
| 405 a->data[i] = s; | |
| 406 } | |
| 407 CompoundStatement *cs = new CompoundStatement(loc, a); | |
| 408 return cs; | |
| 409 } | |
| 410 | |
| 411 | |
| 412 Statement *CompoundStatement::semantic(Scope *sc) | |
| 413 { Statement *s; | |
| 414 | |
| 415 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 416 | |
| 417 for (size_t i = 0; i < statements->dim; ) | |
| 418 { | |
| 419 s = (Statement *) statements->data[i]; | |
| 420 if (s) | |
| 421 { Statements *a = s->flatten(sc); | |
| 422 | |
| 423 if (a) | |
| 424 { | |
| 425 statements->remove(i); | |
| 426 statements->insert(i, a); | |
| 427 continue; | |
| 428 } | |
| 429 s = s->semantic(sc); | |
| 430 statements->data[i] = s; | |
| 431 if (s) | |
| 432 { | |
| 433 Statement *sentry; | |
| 434 Statement *sexception; | |
| 435 Statement *sfinally; | |
| 436 | |
| 1587 | 437 s->scopeCode(sc, &sentry, &sexception, &sfinally); |
| 159 | 438 if (sentry) |
| 439 { | |
| 440 sentry = sentry->semantic(sc); | |
| 441 statements->data[i] = sentry; | |
| 442 } | |
| 443 if (sexception) | |
| 444 { | |
| 445 if (i + 1 == statements->dim && !sfinally) | |
| 446 { | |
| 447 #if 1 | |
| 448 sexception = sexception->semantic(sc); | |
| 449 #else | |
| 450 statements->push(sexception); | |
| 451 if (sfinally) | |
| 452 // Assume sexception does not throw | |
| 453 statements->push(sfinally); | |
| 454 #endif | |
| 455 } | |
| 456 else | |
| 457 { | |
| 458 /* Rewrite: | |
| 459 * s; s1; s2; | |
| 460 * As: | |
| 461 * s; | |
| 462 * try { s1; s2; } | |
| 463 * catch (Object __o) | |
| 464 * { sexception; throw __o; } | |
| 465 */ | |
| 466 Statement *body; | |
| 467 Statements *a = new Statements(); | |
| 468 | |
| 469 for (int j = i + 1; j < statements->dim; j++) | |
| 470 { | |
| 471 a->push(statements->data[j]); | |
| 472 } | |
| 473 body = new CompoundStatement(0, a); | |
| 474 body = new ScopeStatement(0, body); | |
| 475 | |
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476 Identifier *id = Lexer::uniqueId("__o"); |
| 159 | 477 |
| 478 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id)); | |
| 479 handler = new CompoundStatement(0, sexception, handler); | |
| 480 | |
| 481 Array *catches = new Array(); | |
| 482 Catch *ctch = new Catch(0, NULL, id, handler); | |
| 483 catches->push(ctch); | |
| 484 s = new TryCatchStatement(0, body, catches); | |
| 485 | |
| 486 if (sfinally) | |
| 487 s = new TryFinallyStatement(0, s, sfinally); | |
| 488 s = s->semantic(sc); | |
| 489 statements->setDim(i + 1); | |
| 490 statements->push(s); | |
| 491 break; | |
| 492 } | |
| 493 } | |
| 494 else if (sfinally) | |
| 495 { | |
| 496 if (0 && i + 1 == statements->dim) | |
| 497 { | |
| 498 statements->push(sfinally); | |
| 499 } | |
| 500 else | |
| 501 { | |
| 502 /* Rewrite: | |
| 503 * s; s1; s2; | |
| 504 * As: | |
| 505 * s; try { s1; s2; } finally { sfinally; } | |
| 506 */ | |
| 507 Statement *body; | |
| 508 Statements *a = new Statements(); | |
| 509 | |
| 510 for (int j = i + 1; j < statements->dim; j++) | |
| 511 { | |
| 512 a->push(statements->data[j]); | |
| 513 } | |
| 514 body = new CompoundStatement(0, a); | |
| 515 s = new TryFinallyStatement(0, body, sfinally); | |
| 516 s = s->semantic(sc); | |
| 517 statements->setDim(i + 1); | |
| 518 statements->push(s); | |
| 519 break; | |
| 520 } | |
| 521 } | |
| 522 } | |
| 523 } | |
| 524 i++; | |
| 525 } | |
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526 if (statements->dim == 1 && !isAsmBlockStatement()) |
| 336 | 527 { |
| 528 return (Statement *)statements->data[0]; | |
| 529 } | |
| 159 | 530 return this; |
| 531 } | |
| 532 | |
| 533 Statements *CompoundStatement::flatten(Scope *sc) | |
| 534 { | |
| 535 return statements; | |
| 536 } | |
| 537 | |
| 538 ReturnStatement *CompoundStatement::isReturnStatement() | |
| 336 | 539 { |
| 159 | 540 ReturnStatement *rs = NULL; |
| 541 | |
| 336 | 542 for (int i = 0; i < statements->dim; i++) |
| 543 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 544 if (s) |
| 545 { | |
| 546 rs = s->isReturnStatement(); | |
| 547 if (rs) | |
| 548 break; | |
| 549 } | |
| 550 } | |
| 551 return rs; | |
| 552 } | |
| 553 | |
| 554 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 336 | 555 { |
| 556 for (int i = 0; i < statements->dim; i++) | |
| 557 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 558 if (s) |
| 559 s->toCBuffer(buf, hgs); | |
| 560 } | |
| 561 } | |
| 562 | |
| 563 int CompoundStatement::usesEH() | |
| 564 { | |
| 565 for (int i = 0; i < statements->dim; i++) | |
| 336 | 566 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 567 if (s && s->usesEH()) |
| 568 return TRUE; | |
| 569 } | |
| 570 return FALSE; | |
| 571 } | |
| 572 | |
| 336 | 573 int CompoundStatement::blockExit() |
| 574 { | |
| 575 //printf("CompoundStatement::blockExit(%p) %d\n", this, statements->dim); | |
| 576 int result = BEfallthru; | |
| 577 for (size_t i = 0; i < statements->dim; i++) | |
| 578 { Statement *s = (Statement *) statements->data[i]; | |
| 579 if (s) | |
| 580 { | |
| 581 //printf("result = x%x\n", result); | |
| 582 //printf("%s\n", s->toChars()); | |
| 583 if (!(result & BEfallthru) && !s->comeFrom()) | |
| 584 { | |
| 1587 | 585 if (s->blockExit() != BEhalt && !s->isEmpty()) |
| 586 s->warning("statement is not reachable"); | |
| 336 | 587 } |
| 1587 | 588 else |
| 589 { | |
| 590 result &= ~BEfallthru; | |
| 591 result |= s->blockExit(); | |
| 592 } | |
| 336 | 593 } |
| 594 } | |
| 595 return result; | |
| 596 } | |
| 597 | |
| 159 | 598 int CompoundStatement::comeFrom() |
| 599 { int comefrom = FALSE; | |
| 600 | |
| 601 //printf("CompoundStatement::comeFrom()\n"); | |
| 602 for (int i = 0; i < statements->dim; i++) | |
| 603 { Statement *s = (Statement *)statements->data[i]; | |
| 604 | |
| 605 if (!s) | |
| 606 continue; | |
| 607 | |
| 608 comefrom |= s->comeFrom(); | |
| 609 } | |
| 610 return comefrom; | |
| 611 } | |
| 612 | |
| 1587 | 613 int CompoundStatement::isEmpty() |
| 614 { | |
| 615 for (int i = 0; i < statements->dim; i++) | |
| 616 { Statement *s = (Statement *) statements->data[i]; | |
| 617 if (s && !s->isEmpty()) | |
| 618 return FALSE; | |
| 619 } | |
| 620 return TRUE; | |
| 621 } | |
| 622 | |
| 159 | 623 |
|
1195
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624 /******************************** CompoundDeclarationStatement ***************************/ |
|
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625 |
|
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626 CompoundDeclarationStatement::CompoundDeclarationStatement(Loc loc, Statements *s) |
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627 : CompoundStatement(loc, s) |
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628 { |
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629 statements = s; |
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630 } |
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631 |
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632 Statement *CompoundDeclarationStatement::syntaxCopy() |
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633 { |
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634 Statements *a = new Statements(); |
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635 a->setDim(statements->dim); |
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636 for (size_t i = 0; i < statements->dim; i++) |
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637 { Statement *s = (Statement *)statements->data[i]; |
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638 if (s) |
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639 s = s->syntaxCopy(); |
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640 a->data[i] = s; |
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641 } |
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642 CompoundDeclarationStatement *cs = new CompoundDeclarationStatement(loc, a); |
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643 return cs; |
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644 } |
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645 |
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646 void CompoundDeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
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647 { |
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648 int nwritten = 0; |
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649 for (int i = 0; i < statements->dim; i++) |
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650 { Statement *s = (Statement *) statements->data[i]; |
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651 if (s) |
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652 { DeclarationStatement *ds = s->isDeclarationStatement(); |
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653 assert(ds); |
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654 DeclarationExp *de = (DeclarationExp *)ds->exp; |
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655 assert(de->op == TOKdeclaration); |
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656 Declaration *d = de->declaration->isDeclaration(); |
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657 assert(d); |
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658 VarDeclaration *v = d->isVarDeclaration(); |
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659 if (v) |
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660 { |
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661 /* This essentially copies the part of VarDeclaration::toCBuffer() |
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662 * that does not print the type. |
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663 * Should refactor this. |
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664 */ |
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665 if (nwritten) |
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|
666 { |
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667 buf->writeByte(','); |
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668 buf->writestring(v->ident->toChars()); |
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669 } |
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670 else |
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671 { |
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672 StorageClassDeclaration::stcToCBuffer(buf, v->storage_class); |
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673 if (v->type) |
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674 v->type->toCBuffer(buf, v->ident, hgs); |
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675 else |
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676 buf->writestring(v->ident->toChars()); |
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677 } |
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|
678 |
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679 if (v->init) |
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680 { buf->writestring(" = "); |
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681 #if DMDV2 |
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682 ExpInitializer *ie = v->init->isExpInitializer(); |
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683 if (ie && (ie->exp->op == TOKconstruct || ie->exp->op == TOKblit)) |
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684 ((AssignExp *)ie->exp)->e2->toCBuffer(buf, hgs); |
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685 else |
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686 #endif |
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687 v->init->toCBuffer(buf, hgs); |
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|
688 } |
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|
689 } |
|
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|
690 else |
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691 d->toCBuffer(buf, hgs); |
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|
692 nwritten++; |
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|
693 } |
|
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|
694 } |
|
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|
695 buf->writeByte(';'); |
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696 if (!hgs->FLinit.init) |
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|
697 buf->writenl(); |
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|
698 } |
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|
699 |
| 159 | 700 /**************************** UnrolledLoopStatement ***************************/ |
| 701 | |
| 702 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s) | |
| 703 : Statement(loc) | |
| 704 { | |
| 705 statements = s; | |
| 706 } | |
| 707 | |
| 708 Statement *UnrolledLoopStatement::syntaxCopy() | |
| 709 { | |
| 710 Statements *a = new Statements(); | |
| 711 a->setDim(statements->dim); | |
| 712 for (size_t i = 0; i < statements->dim; i++) | |
| 713 { Statement *s = (Statement *)statements->data[i]; | |
| 714 if (s) | |
| 715 s = s->syntaxCopy(); | |
| 716 a->data[i] = s; | |
| 717 } | |
| 718 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
| 719 return cs; | |
| 720 } | |
| 721 | |
| 722 | |
| 723 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
| 724 { | |
| 725 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 726 | |
| 727 sc->noctor++; | |
| 728 Scope *scd = sc->push(); | |
| 729 scd->sbreak = this; | |
| 730 scd->scontinue = this; | |
| 731 | |
| 732 for (size_t i = 0; i < statements->dim; i++) | |
| 733 { | |
| 734 Statement *s = (Statement *) statements->data[i]; | |
| 735 if (s) | |
| 736 { | |
| 1640 | 737 //printf("[%d]: %s\n", i, s->toChars()); |
| 159 | 738 s = s->semantic(scd); |
| 739 statements->data[i] = s; | |
| 740 } | |
| 741 } | |
| 742 | |
| 743 scd->pop(); | |
| 744 sc->noctor--; | |
| 745 return this; | |
| 746 } | |
| 747 | |
| 748 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 749 { | |
| 750 buf->writestring("unrolled {"); | |
| 751 buf->writenl(); | |
| 752 | |
| 753 for (size_t i = 0; i < statements->dim; i++) | |
| 754 { Statement *s; | |
| 755 | |
| 756 s = (Statement *) statements->data[i]; | |
| 757 if (s) | |
| 758 s->toCBuffer(buf, hgs); | |
| 759 } | |
| 760 | |
| 761 buf->writeByte('}'); | |
| 762 buf->writenl(); | |
| 763 } | |
| 764 | |
| 765 int UnrolledLoopStatement::hasBreak() | |
| 766 { | |
| 767 return TRUE; | |
| 768 } | |
| 769 | |
| 770 int UnrolledLoopStatement::hasContinue() | |
| 771 { | |
| 772 return TRUE; | |
| 773 } | |
| 774 | |
| 775 int UnrolledLoopStatement::usesEH() | |
| 776 { | |
| 777 for (size_t i = 0; i < statements->dim; i++) | |
| 336 | 778 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 779 if (s && s->usesEH()) |
| 780 return TRUE; | |
| 781 } | |
| 782 return FALSE; | |
| 783 } | |
| 784 | |
| 336 | 785 int UnrolledLoopStatement::blockExit() |
| 786 { | |
| 787 int result = BEfallthru; | |
| 788 for (size_t i = 0; i < statements->dim; i++) | |
| 789 { Statement *s = (Statement *) statements->data[i]; | |
| 790 if (s) | |
| 791 { | |
| 792 int r = s->blockExit(); | |
| 793 result |= r & ~(BEbreak | BEcontinue); | |
| 794 } | |
| 795 } | |
| 796 return result; | |
| 797 } | |
| 798 | |
| 1640 | 799 |
| 159 | 800 int UnrolledLoopStatement::comeFrom() |
| 801 { int comefrom = FALSE; | |
| 802 | |
| 803 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
| 804 for (size_t i = 0; i < statements->dim; i++) | |
| 805 { Statement *s = (Statement *)statements->data[i]; | |
| 806 | |
| 807 if (!s) | |
| 808 continue; | |
| 809 | |
| 810 comefrom |= s->comeFrom(); | |
| 811 } | |
| 812 return comefrom; | |
| 813 } | |
| 814 | |
| 815 | |
| 816 /******************************** ScopeStatement ***************************/ | |
| 817 | |
| 818 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
| 819 : Statement(loc) | |
| 820 { | |
| 821 this->statement = s; | |
| 822 } | |
| 823 | |
| 824 Statement *ScopeStatement::syntaxCopy() | |
| 825 { | |
| 826 Statement *s; | |
| 827 | |
| 828 s = statement ? statement->syntaxCopy() : NULL; | |
| 829 s = new ScopeStatement(loc, s); | |
| 830 return s; | |
| 831 } | |
| 832 | |
| 833 | |
| 834 Statement *ScopeStatement::semantic(Scope *sc) | |
| 835 { ScopeDsymbol *sym; | |
| 836 | |
| 837 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
| 838 if (statement) | |
| 839 { Statements *a; | |
| 840 | |
| 841 sym = new ScopeDsymbol(); | |
| 842 sym->parent = sc->scopesym; | |
| 843 sc = sc->push(sym); | |
| 844 | |
| 845 a = statement->flatten(sc); | |
| 846 if (a) | |
| 847 { | |
| 848 statement = new CompoundStatement(loc, a); | |
| 849 } | |
| 850 | |
| 851 statement = statement->semantic(sc); | |
| 852 if (statement) | |
| 853 { | |
| 854 Statement *sentry; | |
| 855 Statement *sexception; | |
| 856 Statement *sfinally; | |
| 857 | |
| 1587 | 858 statement->scopeCode(sc, &sentry, &sexception, &sfinally); |
| 159 | 859 if (sfinally) |
| 860 { | |
| 861 //printf("adding sfinally\n"); | |
| 862 statement = new CompoundStatement(loc, statement, sfinally); | |
| 863 } | |
| 864 } | |
| 865 | |
| 866 sc->pop(); | |
| 867 } | |
| 868 return this; | |
| 869 } | |
| 870 | |
| 871 int ScopeStatement::hasBreak() | |
| 872 { | |
| 873 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
| 874 return statement ? statement->hasBreak() : FALSE; | |
| 875 } | |
| 876 | |
| 877 int ScopeStatement::hasContinue() | |
| 878 { | |
| 879 return statement ? statement->hasContinue() : FALSE; | |
| 880 } | |
| 881 | |
| 882 int ScopeStatement::usesEH() | |
| 883 { | |
| 884 return statement ? statement->usesEH() : FALSE; | |
| 885 } | |
| 886 | |
| 336 | 887 int ScopeStatement::blockExit() |
| 888 { | |
| 889 //printf("ScopeStatement::blockExit(%p)\n", statement); | |
| 890 return statement ? statement->blockExit() : BEfallthru; | |
| 891 } | |
| 892 | |
| 1587 | 893 |
| 159 | 894 int ScopeStatement::comeFrom() |
| 895 { | |
| 896 //printf("ScopeStatement::comeFrom()\n"); | |
| 897 return statement ? statement->comeFrom() : FALSE; | |
| 898 } | |
| 899 | |
| 1587 | 900 int ScopeStatement::isEmpty() |
| 901 { | |
| 902 //printf("ScopeStatement::isEmpty() %d\n", statement ? statement->isEmpty() : TRUE); | |
| 903 return statement ? statement->isEmpty() : TRUE; | |
| 904 } | |
| 905 | |
| 159 | 906 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 907 { | |
| 908 buf->writeByte('{'); | |
| 909 buf->writenl(); | |
| 910 | |
| 911 if (statement) | |
| 912 statement->toCBuffer(buf, hgs); | |
| 913 | |
| 914 buf->writeByte('}'); | |
| 915 buf->writenl(); | |
| 916 } | |
| 917 | |
| 918 /******************************** WhileStatement ***************************/ | |
| 919 | |
| 920 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
| 921 : Statement(loc) | |
| 922 { | |
| 923 condition = c; | |
| 924 body = b; | |
| 925 } | |
| 926 | |
| 927 Statement *WhileStatement::syntaxCopy() | |
| 928 { | |
| 929 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 930 return s; | |
| 931 } | |
| 932 | |
| 933 | |
| 934 Statement *WhileStatement::semantic(Scope *sc) | |
| 935 { | |
| 1587 | 936 /* Rewrite as a for(;condition;) loop |
| 937 */ | |
| 938 | |
| 939 Statement *s = new ForStatement(loc, NULL, condition, NULL, body); | |
| 940 s = s->semantic(sc); | |
| 941 return s; | |
| 159 | 942 } |
| 943 | |
| 944 int WhileStatement::hasBreak() | |
| 945 { | |
| 946 return TRUE; | |
| 947 } | |
| 948 | |
| 949 int WhileStatement::hasContinue() | |
| 950 { | |
| 951 return TRUE; | |
| 952 } | |
| 953 | |
| 954 int WhileStatement::usesEH() | |
| 955 { | |
| 1587 | 956 assert(0); |
| 159 | 957 return body ? body->usesEH() : 0; |
| 958 } | |
| 959 | |
| 336 | 960 int WhileStatement::blockExit() |
| 961 { | |
| 1587 | 962 assert(0); |
| 336 | 963 //printf("WhileStatement::blockExit(%p)\n", this); |
| 964 | |
| 965 int result = BEnone; | |
| 966 if (condition->canThrow()) | |
| 967 result |= BEthrow; | |
| 968 if (condition->isBool(TRUE)) | |
| 969 { | |
| 970 if (body) | |
| 971 { result |= body->blockExit(); | |
| 972 if (result & BEbreak) | |
| 973 result |= BEfallthru; | |
| 974 } | |
| 975 } | |
| 976 else if (condition->isBool(FALSE)) | |
| 977 { | |
| 978 result |= BEfallthru; | |
| 979 } | |
| 980 else | |
| 981 { | |
| 982 if (body) | |
| 983 result |= body->blockExit(); | |
| 984 result |= BEfallthru; | |
| 985 } | |
| 986 result &= ~(BEbreak | BEcontinue); | |
| 987 return result; | |
| 988 } | |
| 989 | |
|
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990 |
| 159 | 991 int WhileStatement::comeFrom() |
| 992 { | |
| 1587 | 993 assert(0); |
| 159 | 994 if (body) |
| 995 return body->comeFrom(); | |
| 996 return FALSE; | |
| 997 } | |
| 998 | |
| 999 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1000 { | |
| 1001 buf->writestring("while ("); | |
| 1002 condition->toCBuffer(buf, hgs); | |
| 1003 buf->writebyte(')'); | |
| 1004 buf->writenl(); | |
| 1005 if (body) | |
| 1006 body->toCBuffer(buf, hgs); | |
| 1007 } | |
| 1008 | |
| 1009 /******************************** DoStatement ***************************/ | |
| 1010 | |
| 1011 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
| 1012 : Statement(loc) | |
| 1013 { | |
| 1014 body = b; | |
| 1015 condition = c; | |
| 1016 } | |
| 1017 | |
| 1018 Statement *DoStatement::syntaxCopy() | |
| 1019 { | |
| 1020 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
| 1021 return s; | |
| 1022 } | |
| 1023 | |
| 1024 | |
| 1025 Statement *DoStatement::semantic(Scope *sc) | |
| 1026 { | |
| 1027 sc->noctor++; | |
| 1028 if (body) | |
| 1029 body = body->semanticScope(sc, this, this); | |
| 1030 sc->noctor--; | |
| 1031 condition = condition->semantic(sc); | |
| 1032 condition = resolveProperties(sc, condition); | |
| 1033 condition = condition->optimize(WANTvalue); | |
| 1034 | |
| 1035 condition = condition->checkToBoolean(); | |
| 1036 | |
| 1037 return this; | |
| 1038 } | |
| 1039 | |
| 1040 int DoStatement::hasBreak() | |
| 1041 { | |
| 1042 return TRUE; | |
| 1043 } | |
| 1044 | |
| 1045 int DoStatement::hasContinue() | |
| 1046 { | |
| 1047 return TRUE; | |
| 1048 } | |
| 1049 | |
| 1050 int DoStatement::usesEH() | |
| 1051 { | |
| 1052 return body ? body->usesEH() : 0; | |
| 1053 } | |
| 1054 | |
| 336 | 1055 int DoStatement::blockExit() |
| 1056 { int result; | |
| 1057 | |
| 1058 if (body) | |
| 1059 { result = body->blockExit(); | |
| 1060 if (result == BEbreak) | |
| 1061 return BEfallthru; | |
| 1062 if (result & BEcontinue) | |
| 1063 result |= BEfallthru; | |
| 1064 } | |
| 1065 else | |
| 1066 result = BEfallthru; | |
| 1067 if (result & BEfallthru) | |
| 1068 { if (condition->canThrow()) | |
| 1069 result |= BEthrow; | |
| 1070 if (!(result & BEbreak) && condition->isBool(TRUE)) | |
| 1071 result &= ~BEfallthru; | |
| 1072 } | |
| 1073 result &= ~(BEbreak | BEcontinue); | |
| 1074 return result; | |
| 1075 } | |
| 1076 | |
|
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|
1077 |
| 159 | 1078 int DoStatement::comeFrom() |
| 1079 { | |
| 1080 if (body) | |
| 1081 return body->comeFrom(); | |
| 1082 return FALSE; | |
| 1083 } | |
| 1084 | |
| 1085 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1086 { | |
| 1087 buf->writestring("do"); | |
| 1088 buf->writenl(); | |
| 1089 if (body) | |
| 1090 body->toCBuffer(buf, hgs); | |
| 1091 buf->writestring("while ("); | |
| 1092 condition->toCBuffer(buf, hgs); | |
| 1093 buf->writebyte(')'); | |
| 1094 } | |
| 1095 | |
| 1096 /******************************** ForStatement ***************************/ | |
| 1097 | |
| 1098 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
| 1099 : Statement(loc) | |
| 1100 { | |
| 1101 this->init = init; | |
| 1102 this->condition = condition; | |
| 1103 this->increment = increment; | |
| 1104 this->body = body; | |
| 1105 } | |
| 1106 | |
| 1107 Statement *ForStatement::syntaxCopy() | |
| 1108 { | |
| 1109 Statement *i = NULL; | |
| 1110 if (init) | |
| 1111 i = init->syntaxCopy(); | |
| 1112 Expression *c = NULL; | |
| 1113 if (condition) | |
| 1114 c = condition->syntaxCopy(); | |
| 1115 Expression *inc = NULL; | |
| 1116 if (increment) | |
| 1117 inc = increment->syntaxCopy(); | |
| 1118 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
| 1119 return s; | |
| 1120 } | |
| 1121 | |
| 1122 Statement *ForStatement::semantic(Scope *sc) | |
| 1123 { | |
| 1124 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1125 sym->parent = sc->scopesym; | |
| 1126 sc = sc->push(sym); | |
| 1127 if (init) | |
| 1128 init = init->semantic(sc); | |
|
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1129 #if 0 |
| 159 | 1130 if (!condition) |
| 1131 // Use a default value | |
| 1132 condition = new IntegerExp(loc, 1, Type::tboolean); | |
|
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1133 #endif |
| 159 | 1134 sc->noctor++; |
|
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1135 if (condition) |
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1136 { |
|
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1137 condition = condition->semantic(sc); |
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1138 condition = resolveProperties(sc, condition); |
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1139 condition = condition->optimize(WANTvalue); |
|
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1140 condition = condition->checkToBoolean(); |
|
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1141 } |
| 159 | 1142 if (increment) |
|
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|
1143 { increment = increment->semantic(sc); |
|
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|
1144 increment = resolveProperties(sc, increment); |
| 1587 | 1145 increment = increment->optimize(0); |
|
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|
1146 } |
| 159 | 1147 |
| 1148 sc->sbreak = this; | |
| 1149 sc->scontinue = this; | |
|
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1150 if (body) |
|
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|
1151 body = body->semantic(sc); |
| 159 | 1152 sc->noctor--; |
| 1153 | |
| 1154 sc->pop(); | |
| 1155 return this; | |
| 1156 } | |
| 1157 | |
| 1587 | 1158 void ForStatement::scopeCode(Scope *sc, Statement **sentry, Statement **sexception, Statement **sfinally) |
| 159 | 1159 { |
| 1160 //printf("ForStatement::scopeCode()\n"); | |
| 1161 //print(); | |
| 1162 if (init) | |
| 1587 | 1163 init->scopeCode(sc, sentry, sexception, sfinally); |
| 159 | 1164 else |
| 1587 | 1165 Statement::scopeCode(sc, sentry, sexception, sfinally); |
| 159 | 1166 } |
| 1167 | |
| 1168 int ForStatement::hasBreak() | |
| 1169 { | |
| 1170 //printf("ForStatement::hasBreak()\n"); | |
| 1171 return TRUE; | |
| 1172 } | |
| 1173 | |
| 1174 int ForStatement::hasContinue() | |
| 1175 { | |
| 1176 return TRUE; | |
| 1177 } | |
| 1178 | |
| 1179 int ForStatement::usesEH() | |
| 1180 { | |
| 1181 return (init && init->usesEH()) || body->usesEH(); | |
| 1182 } | |
| 1183 | |
| 336 | 1184 int ForStatement::blockExit() |
| 1185 { int result = BEfallthru; | |
| 1186 | |
| 1187 if (init) | |
| 1188 { result = init->blockExit(); | |
| 1189 if (!(result & BEfallthru)) | |
| 1190 return result; | |
| 1191 } | |
| 1192 if (condition) | |
| 1193 { if (condition->canThrow()) | |
| 1194 result |= BEthrow; | |
| 1587 | 1195 if (condition->isBool(TRUE)) |
| 1196 result &= ~BEfallthru; | |
| 1197 else if (condition->isBool(FALSE)) | |
| 1198 return result; | |
| 336 | 1199 } |
| 1200 else | |
| 1201 result &= ~BEfallthru; // the body must do the exiting | |
| 1202 if (body) | |
| 1203 { int r = body->blockExit(); | |
|
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|
1204 if (r & (BEbreak | BEgoto)) |
| 336 | 1205 result |= BEfallthru; |
|
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|
1206 result |= r & ~(BEfallthru | BEbreak | BEcontinue); |
| 336 | 1207 } |
| 1208 if (increment && increment->canThrow()) | |
| 1209 result |= BEthrow; | |
| 1210 return result; | |
| 1211 } | |
| 1212 | |
|
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|
1213 |
| 159 | 1214 int ForStatement::comeFrom() |
| 1215 { | |
| 1216 //printf("ForStatement::comeFrom()\n"); | |
| 1217 if (body) | |
| 1218 { int result = body->comeFrom(); | |
| 1219 //printf("result = %d\n", result); | |
| 1220 return result; | |
| 1221 } | |
| 1222 return FALSE; | |
| 1223 } | |
| 1224 | |
| 1225 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1226 { | |
| 1227 buf->writestring("for ("); | |
| 1228 if (init) | |
| 1229 { | |
| 1230 hgs->FLinit.init++; | |
| 1231 init->toCBuffer(buf, hgs); | |
| 1232 hgs->FLinit.init--; | |
| 1233 } | |
| 1234 else | |
| 1235 buf->writebyte(';'); | |
| 1236 if (condition) | |
| 1237 { buf->writebyte(' '); | |
| 1238 condition->toCBuffer(buf, hgs); | |
| 1239 } | |
| 1240 buf->writebyte(';'); | |
| 1241 if (increment) | |
| 1242 { buf->writebyte(' '); | |
| 1243 increment->toCBuffer(buf, hgs); | |
| 1244 } | |
| 1245 buf->writebyte(')'); | |
| 1246 buf->writenl(); | |
| 1247 buf->writebyte('{'); | |
| 1248 buf->writenl(); | |
| 1249 body->toCBuffer(buf, hgs); | |
| 1250 buf->writebyte('}'); | |
| 1251 buf->writenl(); | |
| 1252 } | |
| 1253 | |
| 1254 /******************************** ForeachStatement ***************************/ | |
| 1255 | |
|
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|
1256 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Parameters *arguments, |
| 159 | 1257 Expression *aggr, Statement *body) |
| 1258 : Statement(loc) | |
| 1259 { | |
| 1260 this->op = op; | |
| 1261 this->arguments = arguments; | |
| 1262 this->aggr = aggr; | |
| 1263 this->body = body; | |
| 1264 | |
| 1265 this->key = NULL; | |
| 1266 this->value = NULL; | |
| 1267 | |
| 1268 this->func = NULL; | |
| 1269 } | |
| 1270 | |
| 1271 Statement *ForeachStatement::syntaxCopy() | |
| 1272 { | |
|
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diff
changeset
|
1273 Parameters *args = Parameter::arraySyntaxCopy(arguments); |
| 159 | 1274 Expression *exp = aggr->syntaxCopy(); |
| 1275 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, | |
| 1276 body ? body->syntaxCopy() : NULL); | |
| 1277 return s; | |
| 1278 } | |
| 1279 | |
| 1280 Statement *ForeachStatement::semantic(Scope *sc) | |
| 1281 { | |
| 1282 //printf("ForeachStatement::semantic() %p\n", this); | |
| 1283 ScopeDsymbol *sym; | |
| 1284 Statement *s = this; | |
|
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|
1285 size_t dim = arguments->dim; |
| 159 | 1286 TypeAArray *taa = NULL; |
| 1287 | |
| 1288 Type *tn = NULL; | |
| 1289 Type *tnv = NULL; | |
| 1290 | |
| 1291 func = sc->func; | |
| 1292 if (func->fes) | |
| 1293 func = func->fes->func; | |
| 1294 | |
| 1295 aggr = aggr->semantic(sc); | |
| 1296 aggr = resolveProperties(sc, aggr); | |
|
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|
1297 aggr = aggr->optimize(WANTvalue); |
| 159 | 1298 if (!aggr->type) |
| 1299 { | |
| 1300 error("invalid foreach aggregate %s", aggr->toChars()); | |
| 1301 return this; | |
| 1302 } | |
| 1303 | |
|
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diff
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|
1304 inferApplyArgTypes(op, arguments, aggr, sc->module); |
| 159 | 1305 |
| 1306 /* Check for inference errors | |
| 1307 */ | |
| 1308 if (dim != arguments->dim) | |
| 1309 { | |
| 1310 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
| 1311 error("cannot uniquely infer foreach argument types"); | |
| 1312 return this; | |
| 1313 } | |
| 1314 | |
| 1315 Type *tab = aggr->type->toBasetype(); | |
| 1316 | |
| 1317 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
| 1318 { | |
| 1319 if (dim < 1 || dim > 2) | |
| 1320 { | |
| 1321 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
| 1322 return s; | |
| 1323 } | |
| 1324 | |
| 1325 TypeTuple *tuple = (TypeTuple *)tab; | |
| 1326 Statements *statements = new Statements(); | |
| 1327 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
| 1328 size_t n; | |
| 1329 TupleExp *te = NULL; | |
| 1330 if (aggr->op == TOKtuple) // expression tuple | |
| 1331 { te = (TupleExp *)aggr; | |
| 1332 n = te->exps->dim; | |
| 1333 } | |
| 1334 else if (aggr->op == TOKtype) // type tuple | |
| 1335 { | |
|
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|
1336 n = Parameter::dim(tuple->arguments); |
| 159 | 1337 } |
| 1338 else | |
| 1339 assert(0); | |
| 1340 for (size_t j = 0; j < n; j++) | |
| 1341 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
| 1342 Expression *e; | |
| 1343 Type *t; | |
| 1344 if (te) | |
| 1345 e = (Expression *)te->exps->data[k]; | |
| 1346 else | |
|
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diff
changeset
|
1347 t = Parameter::getNth(tuple->arguments, k)->type; |
|
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parents:
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diff
changeset
|
1348 Parameter *arg = (Parameter *)arguments->data[0]; |
| 159 | 1349 Statements *st = new Statements(); |
| 1350 | |
| 1351 if (dim == 2) | |
| 1352 { // Declare key | |
| 1353 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1354 error("no storage class for key %s", arg->ident->toChars()); | |
| 1355 TY keyty = arg->type->ty; | |
|
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1356 if (keyty != Tint32 && keyty != Tuns32) |
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1357 { |
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|
1358 if (global.params.is64bit) |
|
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1359 { |
|
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|
1360 if (keyty != Tint64 && keyty != Tuns64) |
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|
1361 error("foreach: key type must be int or uint, long or ulong, not %s", arg->type->toChars()); |
|
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|
1362 } |
|
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|
1363 else |
|
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|
1364 error("foreach: key type must be int or uint, not %s", arg->type->toChars()); |
|
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1365 } |
| 159 | 1366 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); |
| 1367 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1368 var->storage_class |= STCconst; | |
| 1369 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1370 st->push(new ExpStatement(loc, de)); | |
|
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1371 arg = (Parameter *)arguments->data[1]; // value |
| 159 | 1372 } |
| 1373 // Declare value | |
| 1374 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1375 error("no storage class for value %s", arg->ident->toChars()); | |
| 1376 Dsymbol *var; | |
| 1377 if (te) | |
| 1587 | 1378 { Type *tb = e->type->toBasetype(); |
| 1379 if ((tb->ty == Tfunction || tb->ty == Tsarray) && e->op == TOKvar) | |
| 159 | 1380 { VarExp *ve = (VarExp *)e; |
| 1381 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
| 1382 } | |
| 1383 else | |
| 1384 { | |
| 1385 arg->type = e->type; | |
| 1386 Initializer *ie = new ExpInitializer(0, e); | |
| 1387 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1388 if (e->isConst()) | |
| 1389 v->storage_class |= STCconst; | |
| 1390 var = v; | |
| 1391 } | |
| 1392 } | |
| 1393 else | |
| 1394 { | |
| 1395 var = new AliasDeclaration(loc, arg->ident, t); | |
| 1396 } | |
| 1397 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1398 st->push(new ExpStatement(loc, de)); | |
| 1399 | |
| 1400 st->push(body->syntaxCopy()); | |
| 1401 s = new CompoundStatement(loc, st); | |
| 1402 s = new ScopeStatement(loc, s); | |
| 1403 statements->push(s); | |
| 1404 } | |
| 1405 | |
| 1406 s = new UnrolledLoopStatement(loc, statements); | |
| 1407 s = s->semantic(sc); | |
| 1408 return s; | |
| 1409 } | |
| 1410 | |
|
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|
1411 for (size_t i = 0; i < dim; i++) |
|
1607
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|
1412 { Parameter *arg = (Parameter *)arguments->data[i]; |
| 159 | 1413 if (!arg->type) |
| 1414 { | |
| 1415 error("cannot infer type for %s", arg->ident->toChars()); | |
| 1416 return this; | |
| 1417 } | |
| 1418 } | |
| 1419 | |
| 1420 sym = new ScopeDsymbol(); | |
| 1421 sym->parent = sc->scopesym; | |
| 1422 sc = sc->push(sym); | |
| 1423 | |
| 1424 sc->noctor++; | |
| 1425 | |
| 1426 switch (tab->ty) | |
| 1427 { | |
| 1428 case Tarray: | |
| 1429 case Tsarray: | |
| 1430 if (dim < 1 || dim > 2) | |
| 1431 { | |
| 1432 error("only one or two arguments for array foreach"); | |
| 1433 break; | |
| 1434 } | |
| 1435 | |
| 1436 /* Look for special case of parsing char types out of char type | |
| 1437 * array. | |
| 1438 */ | |
| 1439 tn = tab->nextOf()->toBasetype(); | |
| 1440 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) | |
|
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Merge DMD r253: refactor: Argument => Parameter
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|
1441 { Parameter *arg; |
| 159 | 1442 |
|
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|
1443 int i = (dim == 1) ? 0 : 1; // index of value |
|
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Merge DMD r253: refactor: Argument => Parameter
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diff
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|
1444 arg = (Parameter *)arguments->data[i]; |
| 159 | 1445 arg->type = arg->type->semantic(loc, sc); |
| 1446 tnv = arg->type->toBasetype(); | |
| 1447 if (tnv->ty != tn->ty && | |
| 1448 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
| 1449 { | |
| 1450 if (arg->storageClass & STCref) | |
| 1451 error("foreach: value of UTF conversion cannot be ref"); | |
| 1452 if (dim == 2) | |
|
1607
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Leandro Lucarella <llucax@gmail.com>
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diff
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|
1453 { arg = (Parameter *)arguments->data[0]; |
| 159 | 1454 if (arg->storageClass & STCref) |
| 1455 error("foreach: key cannot be ref"); | |
| 1456 } | |
| 1457 goto Lapply; | |
| 1458 } | |
| 1459 } | |
| 1460 | |
|
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diff
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|
1461 for (size_t i = 0; i < dim; i++) |
| 159 | 1462 { // Declare args |
|
1607
207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
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1587
diff
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|
1463 Parameter *arg = (Parameter *)arguments->data[i]; |
| 1587 | 1464 Type *argtype = arg->type->semantic(loc, sc); |
| 159 | 1465 VarDeclaration *var; |
| 1466 | |
| 1587 | 1467 var = new VarDeclaration(loc, argtype, arg->ident, NULL); |
| 159 | 1468 var->storage_class |= STCforeach; |
| 1469 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
| 1587 | 1470 |
| 159 | 1471 if (dim == 2 && i == 0) |
| 1472 key = var; | |
| 1473 else | |
| 1474 value = var; | |
| 1587 | 1475 #if 0 |
| 1476 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1477 de->semantic(sc); | |
| 1478 #endif | |
| 159 | 1479 } |
| 1480 | |
| 1587 | 1481 #if 1 |
| 1482 { | |
| 1483 /* Convert to a ForStatement | |
| 1484 * foreach (key, value; a) body => | |
| 1485 * for (T[] tmp = a[], size_t key; key < tmp.length; ++key) | |
| 1486 * { T value = tmp[k]; body } | |
| 1487 * | |
| 1488 * foreach_reverse (key, value; a) body => | |
| 1489 * for (T[] tmp = a[], size_t key = tmp.length; key--; ) | |
| 1490 * { T value = tmp[k]; body } | |
| 1491 */ | |
| 1492 Identifier *id = Lexer::uniqueId("__aggr"); | |
| 1493 ExpInitializer *ie = new ExpInitializer(loc, new SliceExp(loc, aggr, NULL, NULL)); | |
| 1494 VarDeclaration *tmp = new VarDeclaration(loc, aggr->type->nextOf()->arrayOf(), id, ie); | |
| 1495 | |
| 1496 Expression *tmp_length = new DotIdExp(loc, new VarExp(loc, tmp), Id::length); | |
| 1497 | |
| 1498 if (!key) | |
| 1499 { | |
| 1500 Identifier *id = Lexer::uniqueId("__key"); | |
| 1501 key = new VarDeclaration(loc, Type::tsize_t, id, NULL); | |
| 1502 } | |
| 1503 if (op == TOKforeach_reverse) | |
| 1504 key->init = new ExpInitializer(loc, tmp_length); | |
| 1505 else | |
| 1506 key->init = new ExpInitializer(loc, new IntegerExp(0)); | |
| 1507 | |
| 1508 Statements *cs = new Statements(); | |
| 1509 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 1510 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, key))); | |
| 1511 Statement *forinit = new CompoundDeclarationStatement(loc, cs); | |
| 1512 | |
| 1513 Expression *cond; | |
| 1514 if (op == TOKforeach_reverse) | |
| 1515 // key-- | |
| 1516 cond = new PostExp(TOKminusminus, loc, new VarExp(loc, key)); | |
| 1517 else | |
| 1518 // key < tmp.length | |
| 1519 cond = new CmpExp(TOKlt, loc, new VarExp(loc, key), tmp_length); | |
| 1520 | |
| 1521 Expression *increment = NULL; | |
| 1522 if (op == TOKforeach) | |
| 1523 // key += 1 | |
| 1524 increment = new AddAssignExp(loc, new VarExp(loc, key), new IntegerExp(1)); | |
| 1525 | |
| 1526 // T value = tmp[key]; | |
| 1527 value->init = new ExpInitializer(loc, new IndexExp(loc, new VarExp(loc, tmp), new VarExp(loc, key))); | |
| 1528 Statement *ds = new DeclarationStatement(loc, new DeclarationExp(loc, value)); | |
| 1529 | |
| 1530 body = new CompoundStatement(loc, ds, body); | |
| 1531 | |
| 1532 ForStatement *fs = new ForStatement(loc, forinit, cond, increment, body); | |
| 1533 s = fs->semantic(sc); | |
| 1534 break; | |
| 1535 } | |
| 1536 #else | |
| 159 | 1537 if (!value->type->equals(tab->next)) |
| 1538 { | |
| 1539 if (aggr->op == TOKstring) | |
| 1540 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
| 1541 else | |
|
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diff
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|
1542 error("foreach: %s is not an array of %s", |
|
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diff
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|
1543 tab->toChars(), value->type->toChars()); |
| 159 | 1544 } |
| 1545 | |
| 1587 | 1546 if (key) |
|
1195
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Merged DMD 1.042.
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diff
changeset
|
1547 { |
| 1587 | 1548 if (key->type->ty != Tint32 && key->type->ty != Tuns32) |
|
1195
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Merged DMD 1.042.
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parents:
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diff
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|
1549 { |
| 1587 | 1550 if (global.params.is64bit) |
| 1551 { | |
| 1552 if (key->type->ty != Tint64 && key->type->ty != Tuns64) | |
| 1553 error("foreach: key type must be int or uint, long or ulong, not %s", key->type->toChars()); | |
| 1554 } | |
| 1555 else | |
| 1556 error("foreach: key type must be int or uint, not %s", key->type->toChars()); | |
|
1195
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Merged DMD 1.042.
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parents:
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diff
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|
1557 } |
| 1587 | 1558 |
| 1559 if (key->storage_class & (STCout | STCref)) | |
| 1560 error("foreach: key cannot be out or ref"); | |
|
1195
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Merged DMD 1.042.
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diff
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|
1561 } |
| 159 | 1562 |
| 1587 | 1563 sc->sbreak = this; |
| 1564 sc->scontinue = this; | |
| 1565 body = body->semantic(sc); | |
| 159 | 1566 break; |
| 1587 | 1567 #endif |
| 159 | 1568 |
| 1569 case Taarray: | |
| 1570 taa = (TypeAArray *)tab; | |
| 1571 if (dim < 1 || dim > 2) | |
| 1572 { | |
| 1573 error("only one or two arguments for associative array foreach"); | |
| 1574 break; | |
| 1575 } | |
| 1576 if (op == TOKforeach_reverse) | |
| 1577 { | |
| 1578 error("no reverse iteration on associative arrays"); | |
| 1579 } | |
| 1580 goto Lapply; | |
| 1581 | |
| 1582 case Tclass: | |
| 1583 case Tstruct: | |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1584 #if DMDV2 |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1585 { /* Look for range iteration, i.e. the properties |
|
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Merged DMD 1.037 frontend
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diff
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|
1586 * .empty, .next, .retreat, .head and .rear |
| 1587 | 1587 * foreach (e; aggr) { ... } |
|
846
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Merged DMD 1.037 frontend
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diff
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|
1588 * translates to: |
| 1587 | 1589 * for (auto __r = aggr[]; !__r.empty; __r.next) |
|
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|
1590 * { auto e = __r.head; |
|
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diff
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|
1591 * ... |
|
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Merged DMD 1.037 frontend
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diff
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|
1592 * } |
|
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Merged DMD 1.037 frontend
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diff
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|
1593 */ |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1594 if (dim != 1) // only one argument allowed with ranges |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1595 goto Lapply; |
|
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1596 AggregateDeclaration *ad = (tab->ty == Tclass) |
|
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changeset
|
1597 ? (AggregateDeclaration *)((TypeClass *)tab)->sym |
|
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diff
changeset
|
1598 : (AggregateDeclaration *)((TypeStruct *)tab)->sym; |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff
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|
1599 Identifier *idhead; |
|
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diff
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|
1600 Identifier *idnext; |
|
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diff
changeset
|
1601 if (op == TOKforeach) |
|
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1602 { idhead = Id::Fhead; |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1603 idnext = Id::Fnext; |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1604 } |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1605 else |
| 1587 | 1606 { idhead = Id::Ftoe; |
|
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diff
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|
1607 idnext = Id::Fretreat; |
|
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|
1608 } |
|
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diff
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|
1609 Dsymbol *shead = search_function(ad, idhead); |
|
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changeset
|
1610 if (!shead) |
|
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diff
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|
1611 goto Lapply; |
|
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diff
changeset
|
1612 |
|
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diff
changeset
|
1613 /* Generate a temporary __r and initialize it with the aggregate. |
|
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changeset
|
1614 */ |
|
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diff
changeset
|
1615 Identifier *id = Identifier::generateId("__r"); |
| 1587 | 1616 Expression *rinit = new SliceExp(loc, aggr, NULL, NULL); |
| 1617 rinit = rinit->trySemantic(sc); | |
| 1618 if (!rinit) // if application of [] failed | |
| 1619 rinit = aggr; | |
| 1620 VarDeclaration *r = new VarDeclaration(loc, NULL, id, new ExpInitializer(loc, rinit)); | |
| 1621 // r->semantic(sc); | |
| 1622 //printf("r: %s, init: %s\n", r->toChars(), r->init->toChars()); | |
|
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diff
changeset
|
1623 Statement *init = new DeclarationStatement(loc, r); |
| 1587 | 1624 //printf("init: %s\n", init->toChars()); |
|
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|
1625 |
|
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diff
changeset
|
1626 // !__r.empty |
|
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parents:
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diff
changeset
|
1627 Expression *e = new VarExp(loc, r); |
|
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diff
changeset
|
1628 e = new DotIdExp(loc, e, Id::Fempty); |
|
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|
1629 Expression *condition = new NotExp(loc, e); |
|
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|
1630 |
|
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|
1631 // __r.next |
|
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|
1632 e = new VarExp(loc, r); |
|
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|
1633 Expression *increment = new DotIdExp(loc, e, idnext); |
|
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|
1634 |
|
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changeset
|
1635 /* Declaration statement for e: |
|
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|
1636 * auto e = __r.idhead; |
|
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|
1637 */ |
|
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diff
changeset
|
1638 e = new VarExp(loc, r); |
|
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diff
changeset
|
1639 Expression *einit = new DotIdExp(loc, e, idhead); |
| 1587 | 1640 // einit = einit->semantic(sc); |
|
1607
207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
1641 Parameter *arg = (Parameter *)arguments->data[0]; |
|
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changeset
|
1642 VarDeclaration *ve = new VarDeclaration(loc, arg->type, arg->ident, new ExpInitializer(loc, einit)); |
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1643 ve->storage_class |= STCforeach; |
| 1587 | 1644 ve->storage_class |= arg->storageClass & (STCin | STCout | STCref | STC_TYPECTOR); |
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1645 |
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1646 DeclarationExp *de = new DeclarationExp(loc, ve); |
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1647 |
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1648 Statement *body = new CompoundStatement(loc, |
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1649 new DeclarationStatement(loc, de), this->body); |
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1650 |
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|
1651 s = new ForStatement(loc, init, condition, increment, body); |
| 1587 | 1652 #if 0 |
| 1653 printf("init: %s\n", init->toChars()); | |
| 1654 printf("condition: %s\n", condition->toChars()); | |
| 1655 printf("increment: %s\n", increment->toChars()); | |
| 1656 printf("body: %s\n", body->toChars()); | |
| 1657 #endif | |
|
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1658 s = s->semantic(sc); |
|
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1659 break; |
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1660 } |
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1661 #endif |
| 159 | 1662 case Tdelegate: |
| 1663 Lapply: | |
| 1664 { FuncDeclaration *fdapply; | |
|
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1665 Parameters *args; |
| 159 | 1666 Expression *ec; |
| 1667 Expression *e; | |
| 1668 FuncLiteralDeclaration *fld; | |
|
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1669 Parameter *a; |
| 159 | 1670 Type *t; |
| 1671 Expression *flde; | |
| 1672 Identifier *id; | |
| 1673 Type *tret; | |
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1674 TypeDelegate* dgty; |
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1675 TypeDelegate* dgty2; |
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1676 TypeDelegate* fldeTy; |
| 159 | 1677 |
| 1678 tret = func->type->nextOf(); | |
| 1679 | |
| 1680 // Need a variable to hold value from any return statements in body. | |
| 1681 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1682 { VarDeclaration *v; | |
| 1683 | |
| 1684 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
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1685 v->noscope = 1; |
| 159 | 1686 v->semantic(sc); |
| 1687 if (!sc->insert(v)) | |
| 1688 assert(0); | |
| 1689 v->parent = sc->func; | |
| 1690 sc->func->vresult = v; | |
| 1691 } | |
| 1692 | |
| 1693 /* Turn body into the function literal: | |
| 1694 * int delegate(ref T arg) { body } | |
| 1695 */ | |
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1696 args = new Parameters(); |
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1697 for (size_t i = 0; i < dim; i++) |
|
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1698 { Parameter *arg = (Parameter *)arguments->data[i]; |
| 159 | 1699 |
| 1700 arg->type = arg->type->semantic(loc, sc); | |
| 1701 if (arg->storageClass & STCref) | |
| 1702 id = arg->ident; | |
| 1703 else | |
| 1704 { // Make a copy of the ref argument so it isn't | |
| 1705 // a reference. | |
| 1706 VarDeclaration *v; | |
| 1707 Initializer *ie; | |
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1708 |
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1709 id = Lexer::uniqueId("__applyArg", i); |
| 159 | 1710 |
| 1711 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1712 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1713 s = new DeclarationStatement(0, v); | |
| 1714 body = new CompoundStatement(loc, s, body); | |
| 1715 } | |
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1716 a = new Parameter(STCref, arg->type, id, NULL); |
| 159 | 1717 args->push(a); |
| 1718 } | |
| 1719 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1720 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1721 fld->fbody = body; | |
| 1722 flde = new FuncExp(loc, fld); | |
| 1723 flde = flde->semantic(sc); | |
| 1724 | |
| 1725 // Resolve any forward referenced goto's | |
| 1726 for (int i = 0; i < gotos.dim; i++) | |
| 1727 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1728 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1729 | |
| 1730 if (!gs->label->statement) | |
| 1731 { // 'Promote' it to this scope, and replace with a return | |
| 1732 cases.push(gs); | |
| 1733 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1734 cs->statements->data[0] = (void *)s; | |
| 1735 } | |
| 1736 } | |
| 1737 | |
| 1738 if (tab->ty == Taarray) | |
| 1739 { | |
| 1740 // Check types | |
|
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1741 Parameter *arg = (Parameter *)arguments->data[0]; |
| 159 | 1742 if (dim == 2) |
| 1743 { | |
| 1744 if (arg->storageClass & STCref) | |
| 1745 error("foreach: index cannot be ref"); | |
| 1746 if (!arg->type->equals(taa->index)) | |
| 1747 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
|
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1748 arg = (Parameter *)arguments->data[1]; |
| 159 | 1749 } |
| 1750 if (!arg->type->equals(taa->nextOf())) | |
| 1751 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1752 | |
| 1753 /* Call: | |
| 1754 * _aaApply(aggr, keysize, flde) | |
| 1755 */ | |
|
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1756 //LDC: Build arguments. |
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1757 static FuncDeclaration *aaApply2_fd = NULL; |
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1758 static TypeDelegate* aaApply2_dg; |
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1759 if(!aaApply2_fd) { |
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1760 Parameters* args = new Parameters; |
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1761 args->push(new Parameter(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
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1762 args->push(new Parameter(STCin, Type::tsize_t, NULL, NULL)); |
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1763 Parameters* dgargs = new Parameters; |
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1764 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1765 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1766 aaApply2_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1767 args->push(new Parameter(STCin, aaApply2_dg, NULL, NULL)); |
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1768 aaApply2_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply2"); |
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1769 } |
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1770 static FuncDeclaration *aaApply_fd = NULL; |
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1771 static TypeDelegate* aaApply_dg; |
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1772 if(!aaApply_fd) { |
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1773 Parameters* args = new Parameters; |
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1774 args->push(new Parameter(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
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1775 args->push(new Parameter(STCin, Type::tsize_t, NULL, NULL)); |
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1776 Parameters* dgargs = new Parameters; |
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1777 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1778 aaApply_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1779 args->push(new Parameter(STCin, aaApply_dg, NULL, NULL)); |
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1780 aaApply_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply"); |
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1781 } |
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1782 if (dim == 2) { |
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1783 fdapply = aaApply2_fd; |
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1784 fldeTy = aaApply2_dg; |
|
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1785 } else { |
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1786 fdapply = aaApply_fd; |
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1787 fldeTy = aaApply_dg; |
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1788 } |
| 159 | 1789 ec = new VarExp(0, fdapply); |
| 1790 Expressions *exps = new Expressions(); | |
| 1791 exps->push(aggr); | |
| 1792 size_t keysize = taa->key->size(); | |
|
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1793 keysize = (keysize + (PTRSIZE-1)) & ~(PTRSIZE-1); |
| 159 | 1794 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); |
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1795 |
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1796 // LDC paint delegate argument to the type runtime expects |
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1797 if (!fldeTy->equals(flde->type)) |
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1798 { |
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1799 flde = new CastExp(loc, flde, flde->type); |
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1800 flde->type = fldeTy; |
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1801 } |
| 159 | 1802 exps->push(flde); |
| 1803 e = new CallExp(loc, ec, exps); | |
| 1804 e->type = Type::tindex; // don't run semantic() on e | |
| 1805 } | |
| 1806 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1807 { | |
| 1808 /* Call: | |
| 1809 * _aApply(aggr, flde) | |
| 1810 */ | |
| 1811 static char fntab[9][3] = | |
| 1812 { "cc","cw","cd", | |
| 1813 "wc","cc","wd", | |
| 1814 "dc","dw","dd" | |
| 1815 }; | |
| 1816 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1817 int flag; | |
| 1818 | |
| 1819 switch (tn->ty) | |
| 1820 { | |
| 1821 case Tchar: flag = 0; break; | |
| 1822 case Twchar: flag = 3; break; | |
| 1823 case Tdchar: flag = 6; break; | |
| 1824 default: assert(0); | |
| 1825 } | |
| 1826 switch (tnv->ty) | |
| 1827 { | |
| 1828 case Tchar: flag += 0; break; | |
| 1829 case Twchar: flag += 1; break; | |
| 1830 case Tdchar: flag += 2; break; | |
| 1831 default: assert(0); | |
| 1832 } | |
| 1833 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
|
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1834 #ifdef __MINGW32__ |
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|
1835 int j = sprintf(fdname, "_aApply%s%.*s%lu", r, 2, fntab[flag], dim); |
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1836 #else |
|
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|
1837 int j = sprintf(fdname, "_aApply%s%.*s%zu", r, 2, fntab[flag], dim); |
|
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|
1838 #endif |
| 159 | 1839 assert(j < sizeof(fdname)); |
|
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1840 //LDC: Build arguments. |
|
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1841 Parameters* args = new Parameters; |
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1842 args->push(new Parameter(STCin, tn->arrayOf(), NULL, NULL)); |
|
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1843 if (dim == 2) { |
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1844 Parameters* dgargs = new Parameters; |
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|
1845 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1846 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1847 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1848 args->push(new Parameter(STCin, dgty, NULL, NULL)); |
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1849 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1850 } else { |
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1851 Parameters* dgargs = new Parameters; |
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1852 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1853 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1854 args->push(new Parameter(STCin, dgty, NULL, NULL)); |
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1855 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1856 } |
| 159 | 1857 |
| 1858 ec = new VarExp(0, fdapply); | |
| 1859 Expressions *exps = new Expressions(); | |
| 1860 if (tab->ty == Tsarray) | |
| 1861 aggr = aggr->castTo(sc, tn->arrayOf()); | |
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1862 exps->push(aggr); |
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1863 |
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1864 // LDC paint delegate argument to the type runtime expects |
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1865 if (!dgty->equals(flde->type)) |
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1866 { |
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1867 flde = new CastExp(loc, flde, flde->type); |
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1868 flde->type = dgty; |
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1869 } |
| 159 | 1870 exps->push(flde); |
| 1871 e = new CallExp(loc, ec, exps); | |
| 1872 e->type = Type::tindex; // don't run semantic() on e | |
| 1873 } | |
| 1874 else if (tab->ty == Tdelegate) | |
| 1875 { | |
| 1876 /* Call: | |
| 1877 * aggr(flde) | |
| 1878 */ | |
| 1879 Expressions *exps = new Expressions(); | |
| 1880 exps->push(flde); | |
| 1881 e = new CallExp(loc, aggr, exps); | |
| 1882 e = e->semantic(sc); | |
| 1883 if (e->type != Type::tint32) | |
| 1884 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1885 } | |
| 1886 else | |
| 1887 { | |
| 1888 /* Call: | |
| 1889 * aggr.apply(flde) | |
| 1890 */ | |
| 1891 ec = new DotIdExp(loc, aggr, | |
| 1892 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1893 : Id::apply); | |
| 1894 Expressions *exps = new Expressions(); | |
| 1895 exps->push(flde); | |
| 1896 e = new CallExp(loc, ec, exps); | |
| 1897 e = e->semantic(sc); | |
| 1898 if (e->type != Type::tint32) | |
| 1899 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1900 } | |
| 1901 | |
| 1902 if (!cases.dim) | |
| 1903 // Easy case, a clean exit from the loop | |
| 1904 s = new ExpStatement(loc, e); | |
| 1905 else | |
| 1906 { // Construct a switch statement around the return value | |
| 1907 // of the apply function. | |
| 1908 Statements *a = new Statements(); | |
| 1909 | |
| 1910 // default: break; takes care of cases 0 and 1 | |
| 1911 s = new BreakStatement(0, NULL); | |
| 1912 s = new DefaultStatement(0, s); | |
| 1913 a->push(s); | |
| 1914 | |
| 1915 // cases 2... | |
| 1916 for (int i = 0; i < cases.dim; i++) | |
| 1917 { | |
| 1918 s = (Statement *)cases.data[i]; | |
| 1919 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1920 a->push(s); | |
| 1921 } | |
| 1922 | |
| 1923 s = new CompoundStatement(loc, a); | |
| 1924 s = new SwitchStatement(loc, e, s); | |
| 1925 s = s->semantic(sc); | |
| 1926 } | |
| 1927 break; | |
| 1928 } | |
| 1929 | |
| 1930 default: | |
| 1931 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1587 | 1932 s = NULL; // error recovery |
| 159 | 1933 break; |
| 1934 } | |
| 1935 sc->noctor--; | |
| 1936 sc->pop(); | |
| 1937 return s; | |
| 1938 } | |
| 1939 | |
| 1940 int ForeachStatement::hasBreak() | |
| 1941 { | |
| 1942 return TRUE; | |
| 1943 } | |
| 1944 | |
| 1945 int ForeachStatement::hasContinue() | |
| 1946 { | |
| 1947 return TRUE; | |
| 1948 } | |
| 1949 | |
| 1950 int ForeachStatement::usesEH() | |
| 1951 { | |
| 1952 return body->usesEH(); | |
| 1953 } | |
| 1954 | |
| 336 | 1955 int ForeachStatement::blockExit() |
| 1956 { int result = BEfallthru; | |
| 1957 | |
| 1958 if (aggr->canThrow()) | |
| 1959 result |= BEthrow; | |
| 1960 | |
| 1961 if (body) | |
| 1962 { | |
| 1963 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 1964 } | |
| 1965 return result; | |
| 1966 } | |
| 1967 | |
| 1587 | 1968 |
| 159 | 1969 int ForeachStatement::comeFrom() |
| 1970 { | |
| 1971 if (body) | |
| 1972 return body->comeFrom(); | |
| 1973 return FALSE; | |
| 1974 } | |
| 1975 | |
| 1976 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1977 { | |
| 1978 buf->writestring(Token::toChars(op)); | |
| 1979 buf->writestring(" ("); | |
| 1980 for (int i = 0; i < arguments->dim; i++) | |
| 1981 { | |
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1982 Parameter *a = (Parameter *)arguments->data[i]; |
| 159 | 1983 if (i) |
| 1984 buf->writestring(", "); | |
| 1985 if (a->storageClass & STCref) | |
| 1986 buf->writestring((global.params.Dversion == 1) | |
| 1987 ? (char*)"inout " : (char*)"ref "); | |
| 1988 if (a->type) | |
| 1989 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1990 else | |
| 1991 buf->writestring(a->ident->toChars()); | |
| 1992 } | |
| 1993 buf->writestring("; "); | |
| 1994 aggr->toCBuffer(buf, hgs); | |
| 1995 buf->writebyte(')'); | |
| 1996 buf->writenl(); | |
| 1997 buf->writebyte('{'); | |
| 1998 buf->writenl(); | |
| 1999 if (body) | |
| 2000 body->toCBuffer(buf, hgs); | |
| 2001 buf->writebyte('}'); | |
| 2002 buf->writenl(); | |
| 2003 } | |
| 2004 | |
| 1587 | 2005 /**************************** ForeachRangeStatement ***************************/ |
| 2006 | |
| 2007 #if DMDV2 | |
| 2008 | |
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2009 ForeachRangeStatement::ForeachRangeStatement(Loc loc, enum TOK op, Parameter *arg, |
| 1587 | 2010 Expression *lwr, Expression *upr, Statement *body) |
| 2011 : Statement(loc) | |
| 2012 { | |
| 2013 this->op = op; | |
| 2014 this->arg = arg; | |
| 2015 this->lwr = lwr; | |
| 2016 this->upr = upr; | |
| 2017 this->body = body; | |
| 2018 | |
| 2019 this->key = NULL; | |
| 2020 } | |
| 2021 | |
| 2022 Statement *ForeachRangeStatement::syntaxCopy() | |
| 2023 { | |
| 2024 ForeachRangeStatement *s = new ForeachRangeStatement(loc, op, | |
| 2025 arg->syntaxCopy(), | |
| 2026 lwr->syntaxCopy(), | |
| 2027 upr->syntaxCopy(), | |
| 2028 body ? body->syntaxCopy() : NULL); | |
| 2029 return s; | |
| 2030 } | |
| 2031 | |
| 2032 Statement *ForeachRangeStatement::semantic(Scope *sc) | |
| 2033 { | |
| 2034 //printf("ForeachRangeStatement::semantic() %p\n", this); | |
| 2035 ScopeDsymbol *sym; | |
| 2036 Statement *s = this; | |
| 2037 | |
| 2038 lwr = lwr->semantic(sc); | |
| 2039 lwr = resolveProperties(sc, lwr); | |
| 2040 lwr = lwr->optimize(WANTvalue); | |
| 2041 if (!lwr->type) | |
| 2042 { | |
| 2043 error("invalid range lower bound %s", lwr->toChars()); | |
| 2044 return this; | |
| 2045 } | |
| 2046 | |
| 2047 upr = upr->semantic(sc); | |
| 2048 upr = resolveProperties(sc, upr); | |
| 2049 upr = upr->optimize(WANTvalue); | |
| 2050 if (!upr->type) | |
| 2051 { | |
| 2052 error("invalid range upper bound %s", upr->toChars()); | |
| 2053 return this; | |
| 2054 } | |
| 2055 | |
| 2056 if (arg->type) | |
| 2057 { | |
| 2058 arg->type = arg->type->semantic(loc, sc); | |
| 2059 lwr = lwr->implicitCastTo(sc, arg->type); | |
| 2060 upr = upr->implicitCastTo(sc, arg->type); | |
| 2061 } | |
| 2062 else | |
| 2063 { | |
| 2064 /* Must infer types from lwr and upr | |
| 2065 */ | |
| 2066 AddExp ea(loc, lwr, upr); | |
| 2067 ea.typeCombine(sc); | |
| 2068 arg->type = ea.type->mutableOf(); | |
| 2069 lwr = ea.e1; | |
| 2070 upr = ea.e2; | |
| 2071 } | |
| 2072 #if 1 | |
| 2073 /* Convert to a for loop: | |
| 2074 * foreach (key; lwr .. upr) => | |
| 2075 * for (auto key = lwr, auto tmp = upr; key < tmp; ++key) | |
| 2076 * | |
| 2077 * foreach_reverse (key; lwr .. upr) => | |
| 2078 * for (auto tmp = lwr, auto key = upr; key-- > tmp;) | |
| 2079 */ | |
| 2080 | |
| 2081 ExpInitializer *ie = new ExpInitializer(loc, (op == TOKforeach) ? lwr : upr); | |
| 2082 key = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 2083 | |
| 2084 Identifier *id = Lexer::uniqueId("__limit"); | |
| 2085 ie = new ExpInitializer(loc, (op == TOKforeach) ? upr : lwr); | |
| 2086 VarDeclaration *tmp = new VarDeclaration(loc, arg->type, id, ie); | |
| 2087 | |
| 2088 Statements *cs = new Statements(); | |
| 2089 // Keep order of evaluation as lwr, then upr | |
| 2090 if (op == TOKforeach) | |
| 2091 { | |
| 2092 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, key))); | |
| 2093 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 2094 } | |
| 2095 else | |
| 2096 { | |
| 2097 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 2098 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, key))); | |
| 2099 } | |
| 2100 Statement *forinit = new CompoundDeclarationStatement(loc, cs); | |
| 2101 | |
| 2102 Expression *cond; | |
| 2103 if (op == TOKforeach_reverse) | |
| 2104 { // key-- > tmp | |
| 2105 cond = new PostExp(TOKminusminus, loc, new VarExp(loc, key)); | |
| 2106 cond = new CmpExp(TOKgt, loc, cond, new VarExp(loc, tmp)); | |
| 2107 } | |
| 2108 else | |
| 2109 // key < tmp | |
| 2110 cond = new CmpExp(TOKlt, loc, new VarExp(loc, key), new VarExp(loc, tmp)); | |
| 2111 | |
| 2112 Expression *increment = NULL; | |
| 2113 if (op == TOKforeach) | |
| 2114 // key += 1 | |
| 2115 increment = new AddAssignExp(loc, new VarExp(loc, key), new IntegerExp(1)); | |
| 2116 | |
| 2117 ForStatement *fs = new ForStatement(loc, forinit, cond, increment, body); | |
| 2118 s = fs->semantic(sc); | |
| 2119 return s; | |
| 2120 #else | |
| 2121 if (!arg->type->isscalar()) | |
| 2122 error("%s is not a scalar type", arg->type->toChars()); | |
| 2123 | |
| 2124 sym = new ScopeDsymbol(); | |
| 2125 sym->parent = sc->scopesym; | |
| 2126 sc = sc->push(sym); | |
| 2127 | |
| 2128 sc->noctor++; | |
| 2129 | |
| 2130 key = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
| 2131 DeclarationExp *de = new DeclarationExp(loc, key); | |
| 2132 de->semantic(sc); | |
| 2133 | |
| 2134 if (key->storage_class) | |
| 2135 error("foreach range: key cannot have storage class"); | |
| 2136 | |
| 2137 sc->sbreak = this; | |
| 2138 sc->scontinue = this; | |
| 2139 body = body->semantic(sc); | |
| 2140 | |
| 2141 sc->noctor--; | |
| 2142 sc->pop(); | |
| 2143 return s; | |
| 2144 #endif | |
| 2145 } | |
| 2146 | |
| 2147 int ForeachRangeStatement::hasBreak() | |
| 2148 { | |
| 2149 return TRUE; | |
| 2150 } | |
| 2151 | |
| 2152 int ForeachRangeStatement::hasContinue() | |
| 2153 { | |
| 2154 return TRUE; | |
| 2155 } | |
| 2156 | |
| 2157 int ForeachRangeStatement::usesEH() | |
| 2158 { | |
| 2159 assert(0); | |
| 2160 return body->usesEH(); | |
| 2161 } | |
| 2162 | |
| 2163 int ForeachRangeStatement::blockExit() | |
| 2164 { | |
| 2165 assert(0); | |
| 2166 int result = BEfallthru; | |
| 2167 | |
| 2168 if (lwr && lwr->canThrow()) | |
| 2169 result |= BEthrow; | |
| 2170 else if (upr && upr->canThrow()) | |
| 2171 result |= BEthrow; | |
| 2172 | |
| 2173 if (body) | |
| 2174 { | |
| 2175 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 2176 } | |
| 2177 return result; | |
| 2178 } | |
| 2179 | |
| 2180 | |
| 2181 int ForeachRangeStatement::comeFrom() | |
| 2182 { | |
| 2183 assert(0); | |
| 2184 if (body) | |
| 2185 return body->comeFrom(); | |
| 2186 return FALSE; | |
| 2187 } | |
| 2188 | |
| 2189 void ForeachRangeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2190 { | |
| 2191 buf->writestring(Token::toChars(op)); | |
| 2192 buf->writestring(" ("); | |
| 2193 | |
| 2194 if (arg->type) | |
| 2195 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 2196 else | |
| 2197 buf->writestring(arg->ident->toChars()); | |
| 2198 | |
| 2199 buf->writestring("; "); | |
| 2200 lwr->toCBuffer(buf, hgs); | |
| 2201 buf->writestring(" .. "); | |
| 2202 upr->toCBuffer(buf, hgs); | |
| 2203 buf->writebyte(')'); | |
| 2204 buf->writenl(); | |
| 2205 buf->writebyte('{'); | |
| 2206 buf->writenl(); | |
| 2207 if (body) | |
| 2208 body->toCBuffer(buf, hgs); | |
| 2209 buf->writebyte('}'); | |
| 2210 buf->writenl(); | |
| 2211 } | |
| 2212 | |
| 2213 #endif | |
| 2214 | |
| 159 | 2215 /******************************** IfStatement ***************************/ |
| 2216 | |
|
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diff
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|
2217 IfStatement::IfStatement(Loc loc, Parameter *arg, Expression *condition, Statement *ifbody, Statement *elsebody) |
| 159 | 2218 : Statement(loc) |
| 2219 { | |
| 2220 this->arg = arg; | |
| 2221 this->condition = condition; | |
| 2222 this->ifbody = ifbody; | |
| 2223 this->elsebody = elsebody; | |
| 2224 this->match = NULL; | |
| 2225 } | |
| 2226 | |
| 2227 Statement *IfStatement::syntaxCopy() | |
| 2228 { | |
| 2229 Statement *i = NULL; | |
| 2230 if (ifbody) | |
| 2231 i = ifbody->syntaxCopy(); | |
| 2232 | |
| 2233 Statement *e = NULL; | |
| 2234 if (elsebody) | |
| 2235 e = elsebody->syntaxCopy(); | |
| 2236 | |
|
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diff
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|
2237 Parameter *a = arg ? arg->syntaxCopy() : NULL; |
| 159 | 2238 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); |
| 2239 return s; | |
| 2240 } | |
| 2241 | |
| 2242 Statement *IfStatement::semantic(Scope *sc) | |
| 2243 { | |
| 2244 condition = condition->semantic(sc); | |
| 2245 condition = resolveProperties(sc, condition); | |
| 2246 condition = condition->checkToBoolean(); | |
| 2247 | |
| 2248 // If we can short-circuit evaluate the if statement, don't do the | |
| 2249 // semantic analysis of the skipped code. | |
| 2250 // This feature allows a limited form of conditional compilation. | |
| 2251 condition = condition->optimize(WANTflags); | |
| 2252 | |
| 2253 // Evaluate at runtime | |
| 2254 unsigned cs0 = sc->callSuper; | |
| 2255 unsigned cs1; | |
| 2256 | |
| 2257 Scope *scd; | |
| 2258 if (arg) | |
| 2259 { /* Declare arg, which we will set to be the | |
| 2260 * result of condition. | |
| 2261 */ | |
| 2262 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 2263 sym->parent = sc->scopesym; | |
| 2264 scd = sc->push(sym); | |
| 2265 | |
| 2266 Type *t = arg->type ? arg->type : condition->type; | |
| 2267 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
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2268 match->noscope = 1; |
| 159 | 2269 match->semantic(scd); |
| 2270 if (!scd->insert(match)) | |
| 2271 assert(0); | |
| 2272 match->parent = sc->func; | |
| 2273 | |
| 2274 /* Generate: | |
| 2275 * (arg = condition) | |
| 2276 */ | |
| 2277 VarExp *v = new VarExp(0, match); | |
| 2278 condition = new AssignExp(loc, v, condition); | |
| 2279 condition = condition->semantic(scd); | |
| 2280 } | |
| 2281 else | |
| 2282 scd = sc->push(); | |
| 2283 ifbody = ifbody->semantic(scd); | |
| 2284 scd->pop(); | |
| 2285 | |
| 2286 cs1 = sc->callSuper; | |
| 2287 sc->callSuper = cs0; | |
| 2288 if (elsebody) | |
| 2289 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 2290 sc->mergeCallSuper(loc, cs1); | |
| 2291 | |
| 2292 return this; | |
| 2293 } | |
| 2294 | |
| 2295 int IfStatement::usesEH() | |
| 2296 { | |
| 2297 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2298 } | |
| 2299 | |
| 336 | 2300 int IfStatement::blockExit() |
| 2301 { | |
| 2302 //printf("IfStatement::blockExit(%p)\n", this); | |
| 2303 | |
| 2304 int result = BEnone; | |
| 2305 if (condition->canThrow()) | |
| 2306 result |= BEthrow; | |
| 2307 if (condition->isBool(TRUE)) | |
| 2308 { | |
| 2309 if (ifbody) | |
| 2310 result |= ifbody->blockExit(); | |
| 2311 else | |
| 2312 result |= BEfallthru; | |
| 2313 } | |
| 2314 else if (condition->isBool(FALSE)) | |
| 2315 { | |
| 2316 if (elsebody) | |
| 2317 result |= elsebody->blockExit(); | |
| 2318 else | |
| 2319 result |= BEfallthru; | |
| 2320 } | |
| 2321 else | |
| 2322 { | |
| 2323 if (ifbody) | |
| 2324 result |= ifbody->blockExit(); | |
| 2325 else | |
| 2326 result |= BEfallthru; | |
| 2327 if (elsebody) | |
| 2328 result |= elsebody->blockExit(); | |
| 2329 else | |
| 2330 result |= BEfallthru; | |
| 2331 } | |
| 2332 //printf("IfStatement::blockExit(%p) = x%x\n", this, result); | |
| 2333 return result; | |
| 2334 } | |
| 2335 | |
| 1587 | 2336 |
| 159 | 2337 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2338 { | |
| 2339 buf->writestring("if ("); | |
| 2340 if (arg) | |
| 2341 { | |
| 2342 if (arg->type) | |
| 2343 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 2344 else | |
|
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6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2345 { buf->writestring("auto "); |
| 159 | 2346 buf->writestring(arg->ident->toChars()); |
|
510
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2347 } |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2348 buf->writestring(" = "); |
| 159 | 2349 } |
| 2350 condition->toCBuffer(buf, hgs); | |
| 2351 buf->writebyte(')'); | |
| 2352 buf->writenl(); | |
| 2353 ifbody->toCBuffer(buf, hgs); | |
| 2354 if (elsebody) | |
| 2355 { buf->writestring("else"); | |
| 2356 buf->writenl(); | |
| 2357 elsebody->toCBuffer(buf, hgs); | |
| 2358 } | |
| 2359 } | |
| 2360 | |
| 2361 /******************************** ConditionalStatement ***************************/ | |
| 2362 | |
| 2363 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 2364 : Statement(loc) | |
| 2365 { | |
| 2366 this->condition = condition; | |
| 2367 this->ifbody = ifbody; | |
| 2368 this->elsebody = elsebody; | |
| 2369 } | |
| 2370 | |
| 2371 Statement *ConditionalStatement::syntaxCopy() | |
| 2372 { | |
| 2373 Statement *e = NULL; | |
| 2374 if (elsebody) | |
| 2375 e = elsebody->syntaxCopy(); | |
| 2376 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 2377 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 2378 return s; | |
| 2379 } | |
| 2380 | |
| 2381 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 2382 { | |
| 2383 //printf("ConditionalStatement::semantic()\n"); | |
| 2384 | |
| 2385 // If we can short-circuit evaluate the if statement, don't do the | |
| 2386 // semantic analysis of the skipped code. | |
| 2387 // This feature allows a limited form of conditional compilation. | |
| 2388 if (condition->include(sc, NULL)) | |
| 2389 { | |
| 2390 ifbody = ifbody->semantic(sc); | |
| 2391 return ifbody; | |
| 2392 } | |
| 2393 else | |
| 2394 { | |
| 2395 if (elsebody) | |
| 2396 elsebody = elsebody->semantic(sc); | |
| 2397 return elsebody; | |
| 2398 } | |
| 2399 } | |
| 2400 | |
| 2401 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 2402 { | |
| 2403 Statement *s; | |
| 2404 | |
| 2405 if (condition->include(sc, NULL)) | |
| 2406 s = ifbody; | |
| 2407 else | |
| 2408 s = elsebody; | |
| 2409 | |
| 2410 Statements *a = new Statements(); | |
| 2411 a->push(s); | |
| 2412 return a; | |
| 2413 } | |
| 2414 | |
| 2415 int ConditionalStatement::usesEH() | |
| 2416 { | |
| 2417 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2418 } | |
| 2419 | |
|
510
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2420 int ConditionalStatement::blockExit() |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2421 { |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2422 int result = ifbody->blockExit(); |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2423 if (elsebody) |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2424 result |= elsebody->blockExit(); |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2425 return result; |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2426 } |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2427 |
| 159 | 2428 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2429 { | |
| 2430 condition->toCBuffer(buf, hgs); | |
| 2431 buf->writenl(); | |
| 336 | 2432 buf->writeByte('{'); |
| 2433 buf->writenl(); | |
| 159 | 2434 if (ifbody) |
| 2435 ifbody->toCBuffer(buf, hgs); | |
| 336 | 2436 buf->writeByte('}'); |
| 2437 buf->writenl(); | |
| 159 | 2438 if (elsebody) |
| 2439 { | |
| 2440 buf->writestring("else"); | |
| 2441 buf->writenl(); | |
| 336 | 2442 buf->writeByte('{'); |
| 2443 buf->writenl(); | |
| 159 | 2444 elsebody->toCBuffer(buf, hgs); |
| 336 | 2445 buf->writeByte('}'); |
| 2446 buf->writenl(); | |
| 159 | 2447 } |
| 2448 buf->writenl(); | |
| 2449 } | |
| 2450 | |
| 2451 | |
| 2452 /******************************** PragmaStatement ***************************/ | |
| 2453 | |
| 2454 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 2455 : Statement(loc) | |
| 2456 { | |
| 2457 this->ident = ident; | |
| 2458 this->args = args; | |
| 2459 this->body = body; | |
| 2460 } | |
| 2461 | |
| 2462 Statement *PragmaStatement::syntaxCopy() | |
| 2463 { | |
| 2464 Statement *b = NULL; | |
| 2465 if (body) | |
| 2466 b = body->syntaxCopy(); | |
| 2467 PragmaStatement *s = new PragmaStatement(loc, | |
| 2468 ident, Expression::arraySyntaxCopy(args), b); | |
| 2469 return s; | |
| 2470 } | |
| 2471 | |
| 2472 Statement *PragmaStatement::semantic(Scope *sc) | |
| 2473 { // Should be merged with PragmaDeclaration | |
| 2474 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 2475 //printf("body = %p\n", body); | |
| 2476 if (ident == Id::msg) | |
| 2477 { | |
| 2478 if (args) | |
| 2479 { | |
| 2480 for (size_t i = 0; i < args->dim; i++) | |
| 2481 { | |
| 2482 Expression *e = (Expression *)args->data[i]; | |
| 2483 | |
| 2484 e = e->semantic(sc); | |
|
1630
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2485 #if 1 |
| 159 | 2486 e = e->optimize(WANTvalue | WANTinterpret); |
|
1630
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2487 #else |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2488 e = e->interpret(NULL); |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2489 if (e == EXP_CANT_INTERPRET) |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2490 fprintf(stdmsg, ((Expression *)args->data[i])->toChars()); |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2491 else |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2492 #endif |
| 159 | 2493 if (e->op == TOKstring) |
| 2494 { | |
| 2495 StringExp *se = (StringExp *)e; | |
| 1587 | 2496 fprintf(stdmsg, "%.*s", (int)se->len, (char *)se->string); |
| 159 | 2497 } |
| 2498 else | |
| 1587 | 2499 fprintf(stdmsg, e->toChars()); |
| 159 | 2500 } |
| 2501 fprintf(stdmsg, "\n"); | |
| 2502 } | |
| 2503 } | |
| 2504 else if (ident == Id::lib) | |
| 2505 { | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2506 #if 1 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2507 /* Should this be allowed? |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2508 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2509 error("pragma(lib) not allowed as statement"); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2510 #else |
| 159 | 2511 if (!args || args->dim != 1) |
| 2512 error("string expected for library name"); | |
| 2513 else | |
| 2514 { | |
| 2515 Expression *e = (Expression *)args->data[0]; | |
| 2516 | |
| 2517 e = e->semantic(sc); | |
| 2518 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2519 args->data[0] = (void *)e; | |
| 2520 if (e->op != TOKstring) | |
| 2521 error("string expected for library name, not '%s'", e->toChars()); | |
| 2522 else if (global.params.verbose) | |
| 2523 { | |
| 2524 StringExp *se = (StringExp *)e; | |
| 2525 char *name = (char *)mem.malloc(se->len + 1); | |
| 2526 memcpy(name, se->string, se->len); | |
| 2527 name[se->len] = 0; | |
| 2528 printf("library %s\n", name); | |
| 2529 mem.free(name); | |
| 2530 } | |
| 2531 } | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2532 #endif |
| 159 | 2533 } |
|
945
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2534 |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2535 // LDC |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2536 else if (ident == Id::allow_inline) |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2537 { |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2538 sc->func->allowInlining = true; |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2539 } |
| 1587 | 2540 #if DMDV2 |
| 2541 else if (ident == Id::startaddress) | |
| 2542 { | |
| 2543 if (!args || args->dim != 1) | |
| 2544 error("function name expected for start address"); | |
| 2545 else | |
| 2546 { | |
| 2547 Expression *e = (Expression *)args->data[0]; | |
| 2548 e = e->semantic(sc); | |
| 2549 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2550 args->data[0] = (void *)e; | |
| 2551 Dsymbol *sa = getDsymbol(e); | |
| 2552 if (!sa || !sa->isFuncDeclaration()) | |
| 2553 error("function name expected for start address, not '%s'", e->toChars()); | |
| 2554 if (body) | |
| 2555 { | |
| 2556 body = body->semantic(sc); | |
| 2557 } | |
| 2558 return this; | |
| 2559 } | |
| 2560 } | |
| 2561 #endif | |
| 159 | 2562 else |
| 2563 error("unrecognized pragma(%s)", ident->toChars()); | |
| 2564 | |
| 2565 if (body) | |
| 2566 { | |
| 2567 body = body->semantic(sc); | |
| 2568 } | |
| 2569 return body; | |
| 2570 } | |
| 2571 | |
| 2572 int PragmaStatement::usesEH() | |
| 2573 { | |
| 2574 return body && body->usesEH(); | |
| 2575 } | |
| 2576 | |
| 336 | 2577 int PragmaStatement::blockExit() |
| 2578 { | |
| 2579 int result = BEfallthru; | |
| 2580 #if 0 // currently, no code is generated for Pragma's, so it's just fallthru | |
| 2581 if (arrayExpressionCanThrow(args)) | |
| 2582 result |= BEthrow; | |
| 2583 if (body) | |
| 2584 result |= body->blockExit(); | |
| 2585 #endif | |
| 2586 return result; | |
| 2587 } | |
| 2588 | |
| 1587 | 2589 |
| 159 | 2590 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2591 { | |
| 2592 buf->writestring("pragma ("); | |
| 2593 buf->writestring(ident->toChars()); | |
| 2594 if (args && args->dim) | |
| 2595 { | |
| 2596 buf->writestring(", "); | |
| 2597 argsToCBuffer(buf, args, hgs); | |
| 2598 } | |
| 2599 buf->writeByte(')'); | |
| 2600 if (body) | |
| 2601 { | |
| 2602 buf->writenl(); | |
| 2603 buf->writeByte('{'); | |
| 2604 buf->writenl(); | |
| 2605 | |
| 2606 body->toCBuffer(buf, hgs); | |
| 2607 | |
| 2608 buf->writeByte('}'); | |
| 2609 buf->writenl(); | |
| 2610 } | |
| 2611 else | |
| 2612 { | |
| 2613 buf->writeByte(';'); | |
| 2614 buf->writenl(); | |
| 2615 } | |
| 2616 } | |
| 2617 | |
| 2618 | |
| 2619 /******************************** StaticAssertStatement ***************************/ | |
| 2620 | |
| 2621 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 2622 : Statement(sa->loc) | |
| 2623 { | |
| 2624 this->sa = sa; | |
| 2625 } | |
| 2626 | |
| 2627 Statement *StaticAssertStatement::syntaxCopy() | |
| 2628 { | |
| 2629 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 2630 return s; | |
| 2631 } | |
| 2632 | |
| 2633 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 2634 { | |
| 2635 sa->semantic2(sc); | |
| 2636 return NULL; | |
| 2637 } | |
| 2638 | |
| 1587 | 2639 int StaticAssertStatement::blockExit() |
| 2640 { | |
| 2641 return BEfallthru; | |
| 2642 } | |
| 2643 | |
| 159 | 2644 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2645 { | |
| 2646 sa->toCBuffer(buf, hgs); | |
| 2647 } | |
| 2648 | |
| 2649 | |
| 2650 /******************************** SwitchStatement ***************************/ | |
| 2651 | |
| 2652 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 2653 : Statement(loc) | |
| 2654 { | |
| 2655 condition = c; | |
| 2656 body = b; | |
| 2657 sdefault = NULL; | |
| 2658 cases = NULL; | |
| 2659 hasNoDefault = 0; | |
|
1159
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2660 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2661 enclosingScopeExit = NULL; |
| 159 | 2662 } |
| 2663 | |
| 2664 Statement *SwitchStatement::syntaxCopy() | |
| 2665 { | |
| 2666 SwitchStatement *s = new SwitchStatement(loc, | |
| 2667 condition->syntaxCopy(), body->syntaxCopy()); | |
| 2668 return s; | |
| 2669 } | |
| 2670 | |
| 2671 Statement *SwitchStatement::semantic(Scope *sc) | |
| 2672 { | |
| 2673 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 2674 assert(!cases); // ensure semantic() is only run once | |
| 2675 | |
|
1159
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2676 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2677 enclosingScopeExit = sc->enclosingScopeExit; |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2678 |
| 159 | 2679 condition = condition->semantic(sc); |
| 2680 condition = resolveProperties(sc, condition); | |
| 2681 if (condition->type->isString()) | |
| 2682 { | |
| 2683 // If it's not an array, cast it to one | |
| 2684 if (condition->type->ty != Tarray) | |
| 2685 { | |
| 2686 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2687 } | |
| 2688 } | |
| 2689 else | |
| 2690 { condition = condition->integralPromotions(sc); | |
| 2691 condition->checkIntegral(); | |
| 2692 } | |
| 2693 condition = condition->optimize(WANTvalue); | |
| 2694 | |
| 2695 sc = sc->push(); | |
| 2696 sc->sbreak = this; | |
| 2697 sc->sw = this; | |
| 2698 | |
| 2699 cases = new Array(); | |
| 2700 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2701 body = body->semantic(sc); | |
| 2702 sc->noctor--; | |
| 2703 | |
| 2704 // Resolve any goto case's with exp | |
| 2705 for (int i = 0; i < gotoCases.dim; i++) | |
| 2706 { | |
| 2707 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2708 | |
| 2709 if (!gcs->exp) | |
| 2710 { | |
| 2711 gcs->error("no case statement following goto case;"); | |
| 2712 break; | |
| 2713 } | |
| 2714 | |
| 2715 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2716 { | |
| 2717 if (!scx->sw) | |
| 2718 continue; | |
| 2719 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2720 { | |
| 2721 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2722 | |
| 2723 if (cs->exp->equals(gcs->exp)) | |
| 2724 { | |
| 2725 gcs->cs = cs; | |
| 2726 goto Lfoundcase; | |
| 2727 } | |
| 2728 } | |
| 2729 } | |
| 2730 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2731 | |
| 2732 Lfoundcase: | |
| 2733 ; | |
| 2734 } | |
| 2735 | |
| 2736 if (!sc->sw->sdefault) | |
| 2737 { hasNoDefault = 1; | |
| 2738 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
945
diff
changeset
|
2739 warning("switch statement has no default"); |
| 159 | 2740 |
| 2741 // Generate runtime error if the default is hit | |
| 2742 Statements *a = new Statements(); | |
| 2743 CompoundStatement *cs; | |
| 2744 Statement *s; | |
| 2745 | |
| 2746 if (global.params.useSwitchError) | |
| 2747 s = new SwitchErrorStatement(loc); | |
| 2748 else | |
| 2749 { Expression *e = new HaltExp(loc); | |
| 2750 s = new ExpStatement(loc, e); | |
| 2751 } | |
| 2752 | |
| 2753 a->reserve(4); | |
| 2754 a->push(body); | |
| 901 | 2755 |
| 2756 // LDC needs semantic to be run on break | |
| 2757 Statement *breakstmt = new BreakStatement(loc, NULL); | |
| 2758 breakstmt->semantic(sc); | |
| 2759 a->push(breakstmt); | |
| 2760 | |
| 159 | 2761 sc->sw->sdefault = new DefaultStatement(loc, s); |
| 2762 a->push(sc->sw->sdefault); | |
| 2763 cs = new CompoundStatement(loc, a); | |
| 2764 body = cs; | |
| 2765 } | |
| 2766 | |
| 1587 | 2767 #if DMDV2 |
| 2768 if (isFinal) | |
| 2769 { Type *t = condition->type; | |
| 2770 while (t->ty == Ttypedef) | |
| 2771 { // Don't use toBasetype() because that will skip past enums | |
| 2772 t = ((TypeTypedef *)t)->sym->basetype; | |
| 2773 } | |
| 2774 if (condition->type->ty == Tenum) | |
| 2775 { TypeEnum *te = (TypeEnum *)condition->type; | |
| 2776 EnumDeclaration *ed = te->toDsymbol(sc)->isEnumDeclaration(); | |
| 2777 assert(ed); | |
| 2778 size_t dim = ed->members->dim; | |
| 2779 for (size_t i = 0; i < dim; i++) | |
| 2780 { | |
| 2781 EnumMember *em = ((Dsymbol *)ed->members->data[i])->isEnumMember(); | |
| 2782 if (em) | |
| 2783 { | |
| 2784 for (size_t j = 0; j < cases->dim; j++) | |
| 2785 { CaseStatement *cs = (CaseStatement *)cases->data[j]; | |
| 2786 if (cs->exp->equals(em->value)) | |
| 2787 goto L1; | |
| 2788 } | |
| 2789 error("enum member %s not represented in final switch", em->toChars()); | |
| 2790 } | |
| 2791 L1: | |
| 2792 ; | |
| 2793 } | |
| 2794 } | |
| 2795 } | |
| 2796 #endif | |
| 2797 | |
| 159 | 2798 sc->pop(); |
| 2799 return this; | |
| 2800 } | |
| 2801 | |
| 2802 int SwitchStatement::hasBreak() | |
| 2803 { | |
| 2804 return TRUE; | |
| 2805 } | |
| 2806 | |
| 2807 int SwitchStatement::usesEH() | |
| 2808 { | |
| 2809 return body ? body->usesEH() : 0; | |
| 2810 } | |
| 2811 | |
| 336 | 2812 int SwitchStatement::blockExit() |
| 2813 { int result = BEnone; | |
| 2814 if (condition->canThrow()) | |
| 2815 result |= BEthrow; | |
| 2816 | |
| 2817 if (body) | |
| 2818 { result |= body->blockExit(); | |
| 2819 if (result & BEbreak) | |
| 2820 { result |= BEfallthru; | |
| 2821 result &= ~BEbreak; | |
| 2822 } | |
| 2823 } | |
| 2824 else | |
| 2825 result |= BEfallthru; | |
| 2826 | |
| 2827 return result; | |
| 2828 } | |
| 2829 | |
| 1587 | 2830 |
| 159 | 2831 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2832 { | |
| 2833 buf->writestring("switch ("); | |
| 2834 condition->toCBuffer(buf, hgs); | |
| 2835 buf->writebyte(')'); | |
| 2836 buf->writenl(); | |
| 2837 if (body) | |
| 2838 { | |
| 2839 if (!body->isScopeStatement()) | |
| 2840 { buf->writebyte('{'); | |
| 2841 buf->writenl(); | |
| 2842 body->toCBuffer(buf, hgs); | |
| 2843 buf->writebyte('}'); | |
| 2844 buf->writenl(); | |
| 2845 } | |
| 2846 else | |
| 2847 { | |
| 2848 body->toCBuffer(buf, hgs); | |
| 2849 } | |
| 2850 } | |
| 2851 } | |
| 2852 | |
| 2853 /******************************** CaseStatement ***************************/ | |
| 2854 | |
| 2855 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2856 : Statement(loc) | |
| 2857 { | |
| 2858 this->exp = exp; | |
| 2859 this->statement = s; | |
| 2860 cblock = NULL; | |
| 2861 bodyBB = NULL; | |
|
262
88252a1af660
[svn r280] Fixed a bunch of issues with switch statements. Ended up a bit far reaching...
lindquist
parents:
232
diff
changeset
|
2862 llvmIdx = NULL; |
|
1159
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2863 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2864 enclosingScopeExit = NULL; |
| 159 | 2865 } |
| 2866 | |
| 2867 Statement *CaseStatement::syntaxCopy() | |
| 2868 { | |
| 2869 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2870 return s; | |
| 2871 } | |
| 2872 | |
| 2873 Statement *CaseStatement::semantic(Scope *sc) | |
| 2874 { SwitchStatement *sw = sc->sw; | |
| 2875 | |
| 2876 //printf("CaseStatement::semantic() %s\n", toChars()); | |
|
1159
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2877 |
| 159 | 2878 exp = exp->semantic(sc); |
| 2879 if (sw) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2880 { |
|
1164
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2881 // LDC |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2882 enclosingScopeExit = sc->enclosingScopeExit; |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2883 if (enclosingScopeExit != sw->enclosingScopeExit) |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2884 { |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2885 error("case must be inside the same try, synchronized or volatile level as switch"); |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2886 } |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2887 |
| 159 | 2888 exp = exp->implicitCastTo(sc, sw->condition->type); |
| 2889 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2890 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2891 { | |
| 2892 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2893 exp = new IntegerExp(0); | |
| 2894 } | |
| 2895 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2896 for (int i = 0; i < sw->cases->dim; i++) |
| 159 | 2897 { |
| 2898 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2899 | |
| 2900 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2901 if (cs->exp->equals(exp)) | |
| 2902 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2903 break; | |
| 2904 } | |
| 2905 } | |
| 2906 | |
| 2907 sw->cases->push(this); | |
| 2908 | |
| 2909 // 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
|
2910 for (size_t i = 0; i < sw->gotoCases.dim; i++) |
| 159 | 2911 { |
| 2912 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2913 | |
| 2914 if (!gcs->exp) | |
| 2915 { | |
| 2916 gcs->cs = this; | |
| 2917 sw->gotoCases.remove(i); // remove from array | |
| 2918 } | |
| 2919 } | |
| 2920 } | |
| 2921 else | |
| 2922 error("case not in switch statement"); | |
| 2923 statement = statement->semantic(sc); | |
| 2924 return this; | |
| 2925 } | |
| 2926 | |
| 2927 int CaseStatement::compare(Object *obj) | |
| 2928 { | |
| 2929 // Sort cases so we can do an efficient lookup | |
| 2930 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2931 | |
| 2932 return exp->compare(cs2->exp); | |
| 2933 } | |
| 2934 | |
| 2935 int CaseStatement::usesEH() | |
| 2936 { | |
| 2937 return statement->usesEH(); | |
| 2938 } | |
| 2939 | |
| 336 | 2940 int CaseStatement::blockExit() |
| 2941 { | |
| 2942 return statement->blockExit(); | |
| 2943 } | |
| 2944 | |
| 1587 | 2945 |
| 159 | 2946 int CaseStatement::comeFrom() |
| 2947 { | |
| 2948 return TRUE; | |
| 2949 } | |
| 2950 | |
| 2951 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2952 { | |
| 2953 buf->writestring("case "); | |
| 2954 exp->toCBuffer(buf, hgs); | |
| 2955 buf->writebyte(':'); | |
| 2956 buf->writenl(); | |
| 2957 statement->toCBuffer(buf, hgs); | |
| 2958 } | |
| 2959 | |
| 1587 | 2960 /******************************** CaseRangeStatement ***************************/ |
| 2961 | |
| 2962 #if DMDV2 | |
| 2963 | |
| 2964 CaseRangeStatement::CaseRangeStatement(Loc loc, Expression *first, | |
| 2965 Expression *last, Statement *s) | |
| 2966 : Statement(loc) | |
| 2967 { | |
| 2968 this->first = first; | |
| 2969 this->last = last; | |
| 2970 this->statement = s; | |
| 2971 } | |
| 2972 | |
| 2973 Statement *CaseRangeStatement::syntaxCopy() | |
| 2974 { | |
| 2975 CaseRangeStatement *s = new CaseRangeStatement(loc, | |
| 2976 first->syntaxCopy(), last->syntaxCopy(), statement->syntaxCopy()); | |
| 2977 return s; | |
| 2978 } | |
| 2979 | |
| 2980 Statement *CaseRangeStatement::semantic(Scope *sc) | |
| 2981 { SwitchStatement *sw = sc->sw; | |
| 2982 | |
| 2983 //printf("CaseRangeStatement::semantic() %s\n", toChars()); | |
| 2984 if (sw->isFinal) | |
| 2985 error("case ranges not allowed in final switch"); | |
| 2986 | |
| 2987 first = first->semantic(sc); | |
| 2988 first = first->implicitCastTo(sc, sw->condition->type); | |
| 2989 first = first->optimize(WANTvalue | WANTinterpret); | |
| 2990 dinteger_t fval = first->toInteger(); | |
| 2991 | |
| 2992 last = last->semantic(sc); | |
| 2993 last = last->implicitCastTo(sc, sw->condition->type); | |
| 2994 last = last->optimize(WANTvalue | WANTinterpret); | |
| 2995 dinteger_t lval = last->toInteger(); | |
| 2996 | |
| 2997 if (lval - fval > 256) | |
| 2998 { error("more than 256 cases in case range"); | |
| 2999 lval = fval + 256; | |
| 3000 } | |
| 3001 | |
| 3002 /* This works by replacing the CaseRange with an array of Case's. | |
| 3003 * | |
| 3004 * case a: .. case b: s; | |
| 3005 * => | |
| 3006 * case a: | |
| 3007 * [...] | |
| 3008 * case b: | |
| 3009 * s; | |
| 3010 */ | |
| 3011 | |
| 3012 Statements *statements = new Statements(); | |
| 3013 for (dinteger_t i = fval; i <= lval; i++) | |
| 3014 { | |
| 3015 Statement *s = statement; | |
| 3016 if (i != lval) | |
| 3017 s = new ExpStatement(loc, NULL); | |
| 3018 Expression *e = new IntegerExp(loc, i, first->type); | |
| 3019 Statement *cs = new CaseStatement(loc, e, s); | |
| 3020 statements->push(cs); | |
| 3021 } | |
| 3022 Statement *s = new CompoundStatement(loc, statements); | |
| 3023 s = s->semantic(sc); | |
| 3024 return s; | |
| 3025 } | |
| 3026 | |
| 3027 void CaseRangeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3028 { | |
| 3029 buf->writestring("case "); | |
| 3030 first->toCBuffer(buf, hgs); | |
| 3031 buf->writestring(": .. case "); | |
| 3032 last->toCBuffer(buf, hgs); | |
| 3033 buf->writenl(); | |
| 3034 statement->toCBuffer(buf, hgs); | |
| 3035 } | |
| 3036 | |
| 3037 #endif | |
| 3038 | |
| 159 | 3039 /******************************** DefaultStatement ***************************/ |
| 3040 | |
| 3041 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 3042 : Statement(loc) | |
| 3043 { | |
| 3044 this->statement = s; | |
| 3045 #if IN_GCC | |
| 3046 + cblock = NULL; | |
| 3047 #endif | |
| 3048 bodyBB = NULL; | |
|
1159
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3049 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3050 enclosingScopeExit = NULL; |
| 159 | 3051 } |
| 3052 | |
| 3053 Statement *DefaultStatement::syntaxCopy() | |
| 3054 { | |
| 3055 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 3056 return s; | |
| 3057 } | |
| 3058 | |
| 3059 Statement *DefaultStatement::semantic(Scope *sc) | |
| 3060 { | |
| 336 | 3061 //printf("DefaultStatement::semantic()\n"); |
|
1159
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3062 |
| 159 | 3063 if (sc->sw) |
| 3064 { | |
| 3065 if (sc->sw->sdefault) | |
| 3066 { | |
| 3067 error("switch statement already has a default"); | |
| 3068 } | |
| 3069 sc->sw->sdefault = this; | |
|
1159
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3070 |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3071 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3072 enclosingScopeExit = sc->enclosingScopeExit; |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3073 if (enclosingScopeExit != sc->sw->enclosingScopeExit) |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3074 { |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3075 error("default must be inside the same try, synchronized or volatile level as switch"); |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3076 } |
| 159 | 3077 } |
| 3078 else | |
| 3079 error("default not in switch statement"); | |
| 3080 statement = statement->semantic(sc); | |
| 3081 return this; | |
| 3082 } | |
| 3083 | |
| 3084 int DefaultStatement::usesEH() | |
| 3085 { | |
| 3086 return statement->usesEH(); | |
| 3087 } | |
| 3088 | |
| 336 | 3089 int DefaultStatement::blockExit() |
| 3090 { | |
| 3091 return statement->blockExit(); | |
| 3092 } | |
| 3093 | |
| 1587 | 3094 |
| 159 | 3095 int DefaultStatement::comeFrom() |
| 3096 { | |
| 3097 return TRUE; | |
| 3098 } | |
| 3099 | |
| 3100 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3101 { | |
| 3102 buf->writestring("default:\n"); | |
| 3103 statement->toCBuffer(buf, hgs); | |
| 3104 } | |
| 3105 | |
| 3106 /******************************** GotoDefaultStatement ***************************/ | |
| 3107 | |
| 3108 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 3109 : Statement(loc) | |
| 3110 { | |
| 3111 sw = NULL; | |
| 3112 } | |
| 3113 | |
| 3114 Statement *GotoDefaultStatement::syntaxCopy() | |
| 3115 { | |
| 3116 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 3117 return s; | |
| 3118 } | |
| 3119 | |
| 3120 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 3121 { | |
| 3122 sw = sc->sw; | |
| 3123 if (!sw) | |
| 3124 error("goto default not in switch statement"); | |
| 3125 return this; | |
| 3126 } | |
| 3127 | |
| 336 | 3128 int GotoDefaultStatement::blockExit() |
| 3129 { | |
| 3130 return BEgoto; | |
| 3131 } | |
| 3132 | |
| 1587 | 3133 |
| 159 | 3134 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3135 { | |
| 3136 buf->writestring("goto default;\n"); | |
| 3137 } | |
| 3138 | |
| 3139 /******************************** GotoCaseStatement ***************************/ | |
| 3140 | |
| 3141 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 3142 : Statement(loc) | |
| 3143 { | |
| 3144 cs = NULL; | |
| 3145 this->exp = exp; | |
| 3146 sw = NULL; | |
| 3147 } | |
| 3148 | |
| 3149 Statement *GotoCaseStatement::syntaxCopy() | |
| 3150 { | |
| 3151 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3152 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 3153 return s; | |
| 3154 } | |
| 3155 | |
| 3156 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 3157 { | |
| 3158 if (exp) | |
| 3159 exp = exp->semantic(sc); | |
| 3160 | |
| 3161 if (!sc->sw) | |
| 3162 error("goto case not in switch statement"); | |
| 3163 else | |
| 3164 { | |
| 3165 sw = sc->sw; | |
| 3166 sc->sw->gotoCases.push(this); | |
| 3167 if (exp) | |
| 3168 { | |
| 3169 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 3170 exp = exp->optimize(WANTvalue); | |
| 3171 } | |
| 3172 } | |
| 3173 return this; | |
| 3174 } | |
| 3175 | |
| 336 | 3176 int GotoCaseStatement::blockExit() |
| 3177 { | |
| 3178 return BEgoto; | |
| 3179 } | |
| 3180 | |
| 1587 | 3181 |
| 159 | 3182 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3183 { | |
| 3184 buf->writestring("goto case"); | |
| 3185 if (exp) | |
| 3186 { buf->writebyte(' '); | |
| 3187 exp->toCBuffer(buf, hgs); | |
| 3188 } | |
| 3189 buf->writebyte(';'); | |
| 3190 buf->writenl(); | |
| 3191 } | |
| 3192 | |
| 3193 /******************************** SwitchErrorStatement ***************************/ | |
| 3194 | |
| 3195 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 3196 : Statement(loc) | |
| 3197 { | |
| 3198 } | |
| 3199 | |
| 336 | 3200 int SwitchErrorStatement::blockExit() |
| 3201 { | |
| 3202 return BEthrow; | |
| 3203 } | |
| 3204 | |
| 1587 | 3205 |
| 159 | 3206 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3207 { | |
| 3208 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 3209 buf->writenl(); | |
| 3210 } | |
| 3211 | |
| 3212 /******************************** ReturnStatement ***************************/ | |
| 3213 | |
| 3214 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 3215 : Statement(loc) | |
| 3216 { | |
| 3217 this->exp = exp; | |
| 3218 } | |
| 3219 | |
| 3220 Statement *ReturnStatement::syntaxCopy() | |
| 3221 { | |
| 3222 Expression *e = NULL; | |
| 3223 if (exp) | |
| 3224 e = exp->syntaxCopy(); | |
| 3225 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 3226 return s; | |
| 3227 } | |
| 3228 | |
| 3229 Statement *ReturnStatement::semantic(Scope *sc) | |
| 3230 { | |
| 3231 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 3232 | |
| 3233 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3234 Scope *scx = sc; | |
| 3235 int implicit0 = 0; | |
| 3236 | |
| 3237 if (sc->fes) | |
| 3238 { | |
| 3239 // Find scope of function foreach is in | |
| 3240 for (; 1; scx = scx->enclosing) | |
| 3241 { | |
| 3242 assert(scx); | |
| 3243 if (scx->func != fd) | |
| 3244 { fd = scx->func; // fd is now function enclosing foreach | |
| 3245 break; | |
| 3246 } | |
| 3247 } | |
| 3248 } | |
| 3249 | |
| 3250 Type *tret = fd->type->nextOf(); | |
| 3251 if (fd->tintro) | |
| 336 | 3252 /* We'll be implicitly casting the return expression to tintro |
| 3253 */ | |
| 159 | 3254 tret = fd->tintro->nextOf(); |
| 3255 Type *tbret = NULL; | |
| 3256 | |
| 3257 if (tret) | |
| 3258 tbret = tret->toBasetype(); | |
| 3259 | |
| 3260 // main() returns 0, even if it returns void | |
| 3261 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 3262 { implicit0 = 1; | |
| 3263 exp = new IntegerExp(0); | |
| 3264 } | |
| 3265 | |
| 3266 if (sc->incontract || scx->incontract) | |
| 3267 error("return statements cannot be in contracts"); | |
|
1141
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3268 if (sc->enclosingFinally || scx->enclosingFinally) |
| 159 | 3269 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); |
| 3270 | |
| 3271 if (fd->isCtorDeclaration()) | |
| 3272 { | |
| 3273 // Constructors implicitly do: | |
| 3274 // return this; | |
| 3275 if (exp && exp->op != TOKthis) | |
| 3276 error("cannot return expression from constructor"); | |
| 3277 exp = new ThisExp(0); | |
| 3278 } | |
| 3279 | |
| 3280 if (!exp) | |
| 3281 fd->nrvo_can = 0; | |
| 3282 | |
| 3283 if (exp) | |
| 3284 { | |
| 3285 fd->hasReturnExp |= 1; | |
| 3286 | |
| 3287 exp = exp->semantic(sc); | |
| 3288 exp = resolveProperties(sc, exp); | |
| 3289 exp = exp->optimize(WANTvalue); | |
| 3290 | |
| 3291 if (fd->nrvo_can && exp->op == TOKvar) | |
| 3292 { VarExp *ve = (VarExp *)exp; | |
| 3293 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 3294 | |
| 3295 if (!v || v->isOut() || v->isRef()) | |
| 3296 fd->nrvo_can = 0; | |
| 3297 else if (fd->nrvo_var == NULL) | |
| 3298 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 1587 | 3299 { //printf("Setting nrvo to %s\n", v->toChars()); |
| 159 | 3300 fd->nrvo_var = v; |
| 1587 | 3301 } |
| 159 | 3302 else |
| 3303 fd->nrvo_can = 0; | |
| 3304 } | |
| 3305 else if (fd->nrvo_var != v) | |
| 3306 fd->nrvo_can = 0; | |
| 3307 } | |
| 3308 else | |
| 3309 fd->nrvo_can = 0; | |
| 3310 | |
| 3311 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 3312 { | |
| 3313 } | |
| 3314 else if (fd->inferRetType) | |
| 3315 { | |
| 3316 if (fd->type->nextOf()) | |
| 3317 { | |
| 3318 if (!exp->type->equals(fd->type->nextOf())) | |
| 3319 error("mismatched function return type inference of %s and %s", | |
| 3320 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 3321 } | |
| 3322 else | |
| 3323 { | |
| 3324 fd->type->next = exp->type; | |
| 3325 fd->type = fd->type->semantic(loc, sc); | |
| 3326 if (!fd->tintro) | |
| 3327 { tret = fd->type->nextOf(); | |
| 3328 tbret = tret->toBasetype(); | |
| 3329 } | |
| 3330 } | |
| 3331 } | |
| 3332 else if (tbret->ty != Tvoid) | |
| 3333 { | |
| 3334 exp = exp->implicitCastTo(sc, tret); | |
| 3335 } | |
| 3336 } | |
| 3337 else if (fd->inferRetType) | |
| 3338 { | |
| 3339 if (fd->type->nextOf()) | |
| 3340 { | |
| 3341 if (fd->type->nextOf()->ty != Tvoid) | |
| 3342 error("mismatched function return type inference of void and %s", | |
| 3343 fd->type->nextOf()->toChars()); | |
| 3344 } | |
| 3345 else | |
| 3346 { | |
| 3347 fd->type->next = Type::tvoid; | |
| 3348 fd->type = fd->type->semantic(loc, sc); | |
| 3349 if (!fd->tintro) | |
| 3350 { tret = Type::tvoid; | |
| 3351 tbret = tret; | |
| 3352 } | |
| 3353 } | |
| 3354 } | |
| 3355 else if (tbret->ty != Tvoid) // if non-void return | |
| 3356 error("return expression expected"); | |
| 3357 | |
| 3358 if (sc->fes) | |
| 3359 { | |
| 3360 Statement *s; | |
| 3361 | |
| 3362 if (exp && !implicit0) | |
| 3363 { | |
| 3364 exp = exp->implicitCastTo(sc, tret); | |
| 3365 } | |
| 3366 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 3367 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 3368 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 3369 exp->op == TOKstring) | |
| 3370 { | |
| 3371 sc->fes->cases.push(this); | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3372 // Construct: return cases.dim+1; |
| 159 | 3373 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 3374 } | |
| 3375 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 3376 { | |
| 3377 s = new ReturnStatement(0, NULL); | |
| 3378 sc->fes->cases.push(s); | |
| 3379 | |
| 3380 // Construct: { exp; return cases.dim + 1; } | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3381 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3382 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 3383 s = new CompoundStatement(loc, s1, s2); |
| 3384 } | |
| 3385 else | |
| 3386 { | |
| 3387 // Construct: return vresult; | |
| 3388 if (!fd->vresult) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3389 { // Declare vresult |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3390 VarDeclaration *v = new VarDeclaration(loc, tret, Id::result, NULL); |
|
1530
05c235309d6f
Make the auto storage class never have the same meaning as scope.
Christian Kamm <kamm incasoftware de>
parents:
1416
diff
changeset
|
3391 v->noscope = 1; |
| 159 | 3392 v->semantic(scx); |
| 3393 if (!scx->insert(v)) | |
| 3394 assert(0); | |
| 3395 v->parent = fd; | |
| 3396 fd->vresult = v; | |
| 3397 } | |
| 3398 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3399 s = new ReturnStatement(0, new VarExp(0, fd->vresult)); |
| 159 | 3400 sc->fes->cases.push(s); |
| 3401 | |
| 3402 // 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
|
3403 exp = new AssignExp(loc, new VarExp(0, fd->vresult), exp); |
| 1587 | 3404 exp->op = TOKconstruct; |
| 159 | 3405 exp = exp->semantic(sc); |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3406 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3407 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 3408 s = new CompoundStatement(loc, s1, s2); |
| 3409 } | |
| 3410 return s; | |
| 3411 } | |
| 3412 | |
| 3413 if (exp) | |
| 3414 { | |
| 3415 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 3416 { | |
| 3417 assert(fd->vresult); | |
| 3418 VarExp *v = new VarExp(0, fd->vresult); | |
| 3419 | |
| 3420 exp = new AssignExp(loc, v, exp); | |
| 1587 | 3421 exp->op = TOKconstruct; |
| 159 | 3422 exp = exp->semantic(sc); |
| 3423 } | |
| 3424 //exp->dump(0); | |
| 3425 //exp->print(); | |
| 3426 exp->checkEscape(); | |
| 3427 } | |
| 3428 | |
| 3429 /* BUG: need to issue an error on: | |
| 3430 * this | |
| 3431 * { if (x) return; | |
| 3432 * super(); | |
| 3433 * } | |
| 3434 */ | |
| 3435 | |
| 3436 if (sc->callSuper & CSXany_ctor && | |
| 3437 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 3438 error("return without calling constructor"); | |
| 3439 | |
| 3440 sc->callSuper |= CSXreturn; | |
| 3441 | |
| 3442 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 3443 if (fd->returnLabel) | |
| 3444 { | |
| 3445 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 3446 | |
| 3447 gs->label = fd->returnLabel; | |
| 3448 if (exp) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3449 { /* Replace: return exp; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3450 * with: exp; goto returnLabel; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3451 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3452 Statement *s = new ExpStatement(0, exp); |
| 159 | 3453 return new CompoundStatement(loc, s, gs); |
| 3454 } | |
| 3455 return gs; | |
| 3456 } | |
| 3457 | |
| 1587 | 3458 if (exp && tbret->ty == Tvoid && !implicit0) |
| 336 | 3459 { |
| 3460 /* Replace: | |
| 3461 * return exp; | |
| 3462 * with: | |
| 3463 * exp; return; | |
| 3464 */ | |
| 3465 Statement *s = new ExpStatement(loc, exp); | |
| 1587 | 3466 exp = NULL; |
| 3467 s = s->semantic(sc); | |
| 159 | 3468 return new CompoundStatement(loc, s, this); |
| 3469 } | |
| 3470 | |
| 3471 return this; | |
| 3472 } | |
| 3473 | |
| 336 | 3474 int ReturnStatement::blockExit() |
| 3475 { int result = BEreturn; | |
| 3476 | |
| 3477 if (exp && exp->canThrow()) | |
| 3478 result |= BEthrow; | |
| 3479 return result; | |
| 3480 } | |
| 3481 | |
| 1587 | 3482 |
| 159 | 3483 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3484 { | |
| 3485 buf->printf("return "); | |
| 3486 if (exp) | |
| 3487 exp->toCBuffer(buf, hgs); | |
| 3488 buf->writeByte(';'); | |
| 3489 buf->writenl(); | |
| 3490 } | |
| 3491 | |
| 3492 /******************************** BreakStatement ***************************/ | |
| 3493 | |
| 3494 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 3495 : Statement(loc) | |
| 3496 { | |
| 3497 this->ident = ident; | |
| 3498 } | |
| 3499 | |
| 3500 Statement *BreakStatement::syntaxCopy() | |
| 3501 { | |
| 3502 BreakStatement *s = new BreakStatement(loc, ident); | |
| 3503 return s; | |
| 3504 } | |
| 3505 | |
| 3506 Statement *BreakStatement::semantic(Scope *sc) | |
| 3507 { | |
| 336 | 3508 //printf("BreakStatement::semantic()\n"); |
| 159 | 3509 // If: |
| 3510 // break Identifier; | |
| 3511 if (ident) | |
| 3512 { | |
| 3513 Scope *scx; | |
| 3514 FuncDeclaration *thisfunc = sc->func; | |
| 3515 | |
| 3516 for (scx = sc; scx; scx = scx->enclosing) | |
| 3517 { | |
| 3518 LabelStatement *ls; | |
| 3519 | |
| 3520 if (scx->func != thisfunc) // if in enclosing function | |
| 3521 { | |
| 3522 if (sc->fes) // if this is the body of a foreach | |
| 3523 { | |
| 3524 /* Post this statement to the fes, and replace | |
| 3525 * it with a return value that caller will put into | |
| 3526 * a switch. Caller will figure out where the break | |
| 3527 * label actually is. | |
| 3528 * Case numbers start with 2, not 0, as 0 is continue | |
| 3529 * and 1 is break. | |
| 3530 */ | |
| 3531 Statement *s; | |
| 3532 sc->fes->cases.push(this); | |
| 3533 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3534 return s; | |
| 3535 } | |
| 3536 break; // can't break to it | |
| 3537 } | |
| 3538 | |
| 3539 ls = scx->slabel; | |
| 3540 if (ls && ls->ident == ident) | |
| 3541 { | |
| 3542 Statement *s = ls->statement; | |
| 3543 | |
| 3544 if (!s->hasBreak()) | |
| 3545 error("label '%s' has no break", ident->toChars()); | |
|
1141
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3546 if (ls->enclosingFinally != sc->enclosingFinally) |
| 159 | 3547 error("cannot break out of finally block"); |
| 3548 | |
| 3549 this->target = ls; | |
| 3550 return this; | |
| 3551 } | |
| 3552 } | |
| 3553 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 3554 } | |
| 3555 else if (!sc->sbreak) | |
| 3556 { | |
| 3557 if (sc->fes) | |
| 3558 { Statement *s; | |
| 3559 | |
| 3560 // Replace break; with return 1; | |
| 3561 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 3562 return s; | |
| 3563 } | |
| 3564 error("break is not inside a loop or switch"); | |
| 3565 } | |
| 3566 return this; | |
| 3567 } | |
| 3568 | |
| 336 | 3569 int BreakStatement::blockExit() |
| 3570 { | |
| 3571 //printf("BreakStatement::blockExit(%p) = x%x\n", this, ident ? BEgoto : BEbreak); | |
| 3572 return ident ? BEgoto : BEbreak; | |
| 3573 } | |
| 3574 | |
| 1587 | 3575 |
| 159 | 3576 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3577 { | |
| 3578 buf->writestring("break"); | |
| 3579 if (ident) | |
| 3580 { buf->writebyte(' '); | |
| 3581 buf->writestring(ident->toChars()); | |
| 3582 } | |
| 3583 buf->writebyte(';'); | |
| 3584 buf->writenl(); | |
| 3585 } | |
| 3586 | |
| 3587 /******************************** ContinueStatement ***************************/ | |
| 3588 | |
| 3589 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 3590 : Statement(loc) | |
| 3591 { | |
| 3592 this->ident = ident; | |
| 3593 } | |
| 3594 | |
| 3595 Statement *ContinueStatement::syntaxCopy() | |
| 3596 { | |
| 3597 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 3598 return s; | |
| 3599 } | |
| 3600 | |
| 3601 Statement *ContinueStatement::semantic(Scope *sc) | |
| 3602 { | |
| 3603 //printf("ContinueStatement::semantic() %p\n", this); | |
| 3604 if (ident) | |
| 3605 { | |
| 3606 Scope *scx; | |
| 3607 FuncDeclaration *thisfunc = sc->func; | |
| 3608 | |
| 3609 for (scx = sc; scx; scx = scx->enclosing) | |
| 3610 { | |
| 3611 LabelStatement *ls; | |
| 3612 | |
| 3613 if (scx->func != thisfunc) // if in enclosing function | |
| 3614 { | |
| 3615 if (sc->fes) // if this is the body of a foreach | |
| 3616 { | |
| 3617 for (; scx; scx = scx->enclosing) | |
| 3618 { | |
| 3619 ls = scx->slabel; | |
| 3620 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 3621 { | |
| 3622 // Replace continue ident; with return 0; | |
| 3623 return new ReturnStatement(0, new IntegerExp(0)); | |
| 3624 } | |
| 3625 } | |
| 3626 | |
| 3627 /* Post this statement to the fes, and replace | |
| 3628 * it with a return value that caller will put into | |
| 3629 * a switch. Caller will figure out where the break | |
| 3630 * label actually is. | |
| 3631 * Case numbers start with 2, not 0, as 0 is continue | |
| 3632 * and 1 is break. | |
| 3633 */ | |
| 3634 Statement *s; | |
| 3635 sc->fes->cases.push(this); | |
| 3636 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3637 return s; | |
| 3638 } | |
| 3639 break; // can't continue to it | |
| 3640 } | |
| 3641 | |
| 3642 ls = scx->slabel; | |
| 3643 if (ls && ls->ident == ident) | |
| 3644 { | |
| 3645 Statement *s = ls->statement; | |
| 3646 | |
| 3647 if (!s->hasContinue()) | |
| 3648 error("label '%s' has no continue", ident->toChars()); | |
|
1141
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3649 if (ls->enclosingFinally != sc->enclosingFinally) |
| 159 | 3650 error("cannot continue out of finally block"); |
| 3651 | |
| 3652 this->target = ls; | |
| 3653 return this; | |
| 3654 } | |
| 3655 } | |
| 3656 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 3657 } | |
| 3658 else if (!sc->scontinue) | |
| 3659 { | |
| 3660 if (sc->fes) | |
| 3661 { Statement *s; | |
| 3662 | |
| 3663 // Replace continue; with return 0; | |
| 3664 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 3665 return s; | |
| 3666 } | |
| 3667 error("continue is not inside a loop"); | |
| 3668 } | |
| 3669 return this; | |
| 3670 } | |
| 3671 | |
| 336 | 3672 int ContinueStatement::blockExit() |
| 3673 { | |
| 3674 return ident ? BEgoto : BEcontinue; | |
| 3675 } | |
| 3676 | |
| 1587 | 3677 |
| 159 | 3678 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3679 { | |
| 3680 buf->writestring("continue"); | |
| 3681 if (ident) | |
| 3682 { buf->writebyte(' '); | |
| 3683 buf->writestring(ident->toChars()); | |
| 3684 } | |
| 3685 buf->writebyte(';'); | |
| 3686 buf->writenl(); | |
| 3687 } | |
| 3688 | |
| 3689 /******************************** SynchronizedStatement ***************************/ | |
| 3690 | |
| 3691 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 3692 : Statement(loc) | |
| 3693 { | |
| 3694 this->exp = exp; | |
| 3695 this->body = body; | |
| 3696 this->esync = NULL; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3697 // LDC |
| 309 | 3698 this->llsync = NULL; |
| 159 | 3699 } |
| 3700 | |
| 3701 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 3702 : Statement(loc) | |
| 3703 { | |
| 3704 this->exp = NULL; | |
| 3705 this->body = body; | |
| 3706 this->esync = esync; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3707 // LDC |
| 309 | 3708 this->llsync = NULL; |
| 159 | 3709 } |
| 3710 | |
| 3711 Statement *SynchronizedStatement::syntaxCopy() | |
| 3712 { | |
| 3713 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3714 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 3715 return s; | |
| 3716 } | |
| 3717 | |
| 3718 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 3719 { | |
| 3720 if (exp) | |
| 1587 | 3721 { |
| 159 | 3722 exp = exp->semantic(sc); |
| 3723 exp = resolveProperties(sc, exp); | |
| 1587 | 3724 ClassDeclaration *cd = exp->type->isClassHandle(); |
| 159 | 3725 if (!cd) |
| 3726 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 3727 else if (cd->isInterfaceDeclaration()) | |
| 1587 | 3728 { /* Cast the interface to an object, as the object has the monitor, |
| 3729 * not the interface. | |
| 3730 */ | |
| 3731 Type *t = new TypeIdentifier(0, Id::Object); | |
| 159 | 3732 |
| 3733 t = t->semantic(0, sc); | |
| 3734 exp = new CastExp(loc, exp, t); | |
| 3735 exp = exp->semantic(sc); | |
| 3736 } | |
| 1587 | 3737 |
| 3738 #if 0 | |
| 3739 /* Rewrite as: | |
| 3740 * auto tmp = exp; | |
| 3741 * _d_monitorenter(tmp); | |
| 3742 * try { body } finally { _d_monitorexit(tmp); } | |
| 3743 */ | |
| 3744 Identifier *id = Lexer::uniqueId("__sync"); | |
| 3745 ExpInitializer *ie = new ExpInitializer(loc, exp); | |
| 3746 VarDeclaration *tmp = new VarDeclaration(loc, exp->type, id, ie); | |
| 3747 | |
| 3748 Statements *cs = new Statements(); | |
| 3749 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 3750 | |
| 3751 FuncDeclaration *fdenter = FuncDeclaration::genCfunc(Type::tvoid, Id::monitorenter); | |
| 3752 Expression *e = new CallExp(loc, new VarExp(loc, fdenter), new VarExp(loc, tmp)); | |
| 3753 e->type = Type::tvoid; // do not run semantic on e | |
| 3754 cs->push(new ExpStatement(loc, e)); | |
| 3755 | |
| 3756 FuncDeclaration *fdexit = FuncDeclaration::genCfunc(Type::tvoid, Id::monitorexit); | |
| 3757 e = new CallExp(loc, new VarExp(loc, fdexit), new VarExp(loc, tmp)); | |
| 3758 e->type = Type::tvoid; // do not run semantic on e | |
| 3759 Statement *s = new ExpStatement(loc, e); | |
| 3760 s = new TryFinallyStatement(loc, body, s); | |
| 3761 cs->push(s); | |
| 3762 | |
| 3763 s = new CompoundStatement(loc, cs); | |
| 3764 return s->semantic(sc); | |
| 3765 #endif | |
| 159 | 3766 } |
| 1587 | 3767 #if 0 |
| 3768 else | |
| 3769 { /* Generate our own critical section, then rewrite as: | |
| 3770 * __gshared byte[CriticalSection.sizeof] critsec; | |
| 3771 * _d_criticalenter(critsec.ptr); | |
| 3772 * try { body } finally { _d_criticalexit(critsec.ptr); } | |
| 3773 */ | |
| 3774 Identifier *id = Lexer::uniqueId("__critsec"); | |
| 3775 Type *t = new TypeSArray(Type::tint8, new IntegerExp(PTRSIZE + os_critsecsize())); | |
| 3776 VarDeclaration *tmp = new VarDeclaration(loc, t, id, NULL); | |
| 3777 tmp->storage_class |= STCgshared | STCstatic; | |
| 3778 | |
| 3779 Statements *cs = new Statements(); | |
| 3780 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 3781 | |
| 3782 FuncDeclaration *fdenter = FuncDeclaration::genCfunc(Type::tvoid, Id::criticalenter); | |
| 3783 Expression *e = new DotIdExp(loc, new VarExp(loc, tmp), Id::ptr); | |
| 3784 e = e->semantic(sc); | |
| 3785 e = new CallExp(loc, new VarExp(loc, fdenter), e); | |
| 3786 e->type = Type::tvoid; // do not run semantic on e | |
| 3787 cs->push(new ExpStatement(loc, e)); | |
| 3788 | |
| 3789 FuncDeclaration *fdexit = FuncDeclaration::genCfunc(Type::tvoid, Id::criticalexit); | |
| 3790 e = new DotIdExp(loc, new VarExp(loc, tmp), Id::ptr); | |
| 3791 e = e->semantic(sc); | |
| 3792 e = new CallExp(loc, new VarExp(loc, fdexit), e); | |
| 3793 e->type = Type::tvoid; // do not run semantic on e | |
| 3794 Statement *s = new ExpStatement(loc, e); | |
| 3795 s = new TryFinallyStatement(loc, body, s); | |
| 3796 cs->push(s); | |
| 3797 | |
| 3798 s = new CompoundStatement(loc, cs); | |
| 3799 return s->semantic(sc); | |
| 3800 } | |
| 3801 #endif | |
| 159 | 3802 if (body) |
| 309 | 3803 { |
|
1141
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3804 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3805 sc->enclosingScopeExit = this; |
|
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diff
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|
3806 body = body->semantic(sc); |
|
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diff
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|
3807 sc->enclosingScopeExit = oldScopeExit; |
| 309 | 3808 } |
| 159 | 3809 return this; |
| 3810 } | |
| 3811 | |
| 3812 int SynchronizedStatement::hasBreak() | |
| 3813 { | |
| 3814 return FALSE; //TRUE; | |
| 3815 } | |
| 3816 | |
| 3817 int SynchronizedStatement::hasContinue() | |
| 3818 { | |
| 3819 return FALSE; //TRUE; | |
| 3820 } | |
| 3821 | |
| 3822 int SynchronizedStatement::usesEH() | |
| 3823 { | |
| 3824 return TRUE; | |
| 3825 } | |
| 3826 | |
| 336 | 3827 int SynchronizedStatement::blockExit() |
| 3828 { | |
| 3829 return body ? body->blockExit() : BEfallthru; | |
| 3830 } | |
| 3831 | |
| 1587 | 3832 |
| 159 | 3833 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3834 { | |
| 3835 buf->writestring("synchronized"); | |
| 3836 if (exp) | |
| 3837 { buf->writebyte('('); | |
| 3838 exp->toCBuffer(buf, hgs); | |
| 3839 buf->writebyte(')'); | |
| 3840 } | |
| 3841 if (body) | |
| 3842 { | |
| 3843 buf->writebyte(' '); | |
| 3844 body->toCBuffer(buf, hgs); | |
| 3845 } | |
| 3846 } | |
| 3847 | |
| 3848 /******************************** WithStatement ***************************/ | |
| 3849 | |
| 3850 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 3851 : Statement(loc) | |
| 3852 { | |
| 3853 this->exp = exp; | |
| 3854 this->body = body; | |
| 3855 wthis = NULL; | |
| 3856 } | |
| 3857 | |
| 3858 Statement *WithStatement::syntaxCopy() | |
| 3859 { | |
| 3860 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 3861 return s; | |
| 3862 } | |
| 3863 | |
| 3864 Statement *WithStatement::semantic(Scope *sc) | |
| 3865 { ScopeDsymbol *sym; | |
| 3866 Initializer *init; | |
| 3867 | |
| 3868 //printf("WithStatement::semantic()\n"); | |
| 3869 exp = exp->semantic(sc); | |
| 3870 exp = resolveProperties(sc, exp); | |
| 3871 if (exp->op == TOKimport) | |
| 3872 { ScopeExp *es = (ScopeExp *)exp; | |
| 3873 | |
| 3874 sym = es->sds; | |
| 3875 } | |
| 3876 else if (exp->op == TOKtype) | |
| 3877 { TypeExp *es = (TypeExp *)exp; | |
| 3878 | |
| 3879 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 3880 if (!sym) | |
| 3881 { error("%s has no members", es->toChars()); | |
| 3882 body = body->semantic(sc); | |
| 3883 return this; | |
| 3884 } | |
| 3885 } | |
| 3886 else | |
| 3887 { Type *t = exp->type; | |
| 3888 | |
| 3889 assert(t); | |
| 3890 t = t->toBasetype(); | |
| 3891 if (t->isClassHandle()) | |
| 3892 { | |
| 3893 init = new ExpInitializer(loc, exp); | |
| 3894 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3895 wthis->semantic(sc); | |
| 3896 | |
| 3897 sym = new WithScopeSymbol(this); | |
| 3898 sym->parent = sc->scopesym; | |
| 3899 } | |
| 3900 else if (t->ty == Tstruct) | |
| 3901 { | |
| 3902 Expression *e = exp->addressOf(sc); | |
| 3903 init = new ExpInitializer(loc, e); | |
| 3904 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3905 wthis->semantic(sc); | |
| 3906 sym = new WithScopeSymbol(this); | |
| 3907 sym->parent = sc->scopesym; | |
| 3908 } | |
| 3909 else | |
| 3910 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3911 return NULL; | |
| 3912 } | |
| 3913 } | |
| 3914 sc = sc->push(sym); | |
| 3915 | |
| 3916 if (body) | |
| 3917 body = body->semantic(sc); | |
| 3918 | |
| 3919 sc->pop(); | |
| 3920 | |
| 3921 return this; | |
| 3922 } | |
| 3923 | |
| 3924 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3925 { | |
| 3926 buf->writestring("with ("); | |
| 3927 exp->toCBuffer(buf, hgs); | |
| 3928 buf->writestring(")\n"); | |
| 3929 if (body) | |
| 3930 body->toCBuffer(buf, hgs); | |
| 3931 } | |
| 3932 | |
| 3933 int WithStatement::usesEH() | |
| 3934 { | |
| 3935 return body ? body->usesEH() : 0; | |
| 3936 } | |
| 3937 | |
| 336 | 3938 int WithStatement::blockExit() |
| 3939 { | |
| 3940 int result = BEnone; | |
| 3941 if (exp->canThrow()) | |
| 3942 result = BEthrow; | |
| 3943 if (body) | |
| 3944 result |= body->blockExit(); | |
| 3945 else | |
| 3946 result |= BEfallthru; | |
| 3947 return result; | |
| 3948 } | |
| 3949 | |
| 1587 | 3950 |
| 159 | 3951 /******************************** TryCatchStatement ***************************/ |
| 3952 | |
| 3953 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3954 : Statement(loc) | |
| 3955 { | |
| 3956 this->body = body; | |
| 3957 this->catches = catches; | |
| 3958 } | |
| 3959 | |
| 3960 Statement *TryCatchStatement::syntaxCopy() | |
| 3961 { | |
| 3962 Array *a = new Array(); | |
| 3963 a->setDim(catches->dim); | |
| 3964 for (int i = 0; i < a->dim; i++) | |
| 3965 { Catch *c; | |
| 3966 | |
| 3967 c = (Catch *)catches->data[i]; | |
| 3968 c = c->syntaxCopy(); | |
| 3969 a->data[i] = c; | |
| 3970 } | |
| 3971 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3972 return s; | |
| 3973 } | |
| 3974 | |
| 3975 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3976 { | |
| 3977 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3978 | |
| 336 | 3979 /* Even if body is NULL, still do semantic analysis on catches |
| 3980 */ | |
| 3981 for (size_t i = 0; i < catches->dim; i++) | |
| 3982 { Catch *c = (Catch *)catches->data[i]; | |
| 159 | 3983 c->semantic(sc); |
| 3984 | |
| 3985 // Determine if current catch 'hides' any previous catches | |
| 336 | 3986 for (size_t j = 0; j < i; j++) |
| 159 | 3987 { Catch *cj = (Catch *)catches->data[j]; |
| 3988 char *si = c->loc.toChars(); | |
| 3989 char *sj = cj->loc.toChars(); | |
| 3990 | |
| 3991 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3992 error("catch at %s hides catch at %s", sj, si); | |
| 3993 } | |
| 3994 } | |
| 1587 | 3995 |
| 3996 if (!body || body->isEmpty()) | |
| 3997 { | |
| 3998 return NULL; | |
| 3999 } | |
| 159 | 4000 return this; |
| 4001 } | |
| 4002 | |
| 4003 int TryCatchStatement::hasBreak() | |
| 4004 { | |
| 4005 return FALSE; //TRUE; | |
| 4006 } | |
| 4007 | |
| 4008 int TryCatchStatement::usesEH() | |
| 4009 { | |
| 4010 return TRUE; | |
| 4011 } | |
| 4012 | |
| 336 | 4013 int TryCatchStatement::blockExit() |
| 1587 | 4014 { |
| 336 | 4015 assert(body); |
| 1587 | 4016 int result = body->blockExit(); |
| 336 | 4017 |
| 4018 for (size_t i = 0; i < catches->dim; i++) | |
| 4019 { | |
| 4020 Catch *c = (Catch *)catches->data[i]; | |
| 4021 result |= c->blockExit(); | |
| 4022 } | |
| 4023 return result; | |
| 4024 } | |
| 4025 | |
| 159 | 4026 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4027 { | |
| 4028 buf->writestring("try"); | |
| 4029 buf->writenl(); | |
| 4030 if (body) | |
| 4031 body->toCBuffer(buf, hgs); | |
| 336 | 4032 for (size_t i = 0; i < catches->dim; i++) |
| 159 | 4033 { |
| 4034 Catch *c = (Catch *)catches->data[i]; | |
| 4035 c->toCBuffer(buf, hgs); | |
| 4036 } | |
| 4037 } | |
| 4038 | |
| 4039 /******************************** Catch ***************************/ | |
| 4040 | |
| 4041 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 4042 { | |
| 4043 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 4044 this->loc = loc; | |
| 4045 this->type = t; | |
| 4046 this->ident = id; | |
| 4047 this->handler = handler; | |
| 4048 var = NULL; | |
| 4049 } | |
| 4050 | |
| 4051 Catch *Catch::syntaxCopy() | |
| 4052 { | |
| 4053 Catch *c = new Catch(loc, | |
| 4054 (type ? type->syntaxCopy() : NULL), | |
| 4055 ident, | |
| 4056 (handler ? handler->syntaxCopy() : NULL)); | |
| 4057 return c; | |
| 4058 } | |
| 4059 | |
| 4060 void Catch::semantic(Scope *sc) | |
| 4061 { ScopeDsymbol *sym; | |
| 4062 | |
| 4063 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 4064 | |
| 4065 #ifndef IN_GCC | |
|
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diff
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|
4066 if (sc->enclosingFinally) |
| 159 | 4067 { |
| 4068 /* This is because the _d_local_unwind() gets the stack munged | |
| 4069 * up on this. The workaround is to place any try-catches into | |
| 4070 * a separate function, and call that. | |
| 4071 * To fix, have the compiler automatically convert the finally | |
| 4072 * body into a nested function. | |
| 4073 */ | |
| 4074 error(loc, "cannot put catch statement inside finally block"); | |
| 4075 } | |
| 4076 #endif | |
| 4077 | |
| 4078 sym = new ScopeDsymbol(); | |
| 4079 sym->parent = sc->scopesym; | |
| 4080 sc = sc->push(sym); | |
| 4081 | |
| 4082 if (!type) | |
| 4083 type = new TypeIdentifier(0, Id::Object); | |
| 4084 type = type->semantic(loc, sc); | |
| 4085 if (!type->toBasetype()->isClassHandle()) | |
| 4086 error("can only catch class objects, not '%s'", type->toChars()); | |
| 4087 else if (ident) | |
| 4088 { | |
| 4089 var = new VarDeclaration(loc, type, ident, NULL); | |
| 4090 var->parent = sc->parent; | |
| 4091 sc->insert(var); | |
| 4092 } | |
| 4093 handler = handler->semantic(sc); | |
| 4094 | |
| 4095 sc->pop(); | |
| 4096 } | |
| 4097 | |
| 336 | 4098 int Catch::blockExit() |
| 4099 { | |
| 4100 return handler ? handler->blockExit() : BEfallthru; | |
| 4101 } | |
| 4102 | |
| 159 | 4103 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4104 { | |
| 4105 buf->writestring("catch"); | |
| 4106 if (type) | |
| 4107 { buf->writebyte('('); | |
| 4108 type->toCBuffer(buf, ident, hgs); | |
| 4109 buf->writebyte(')'); | |
| 4110 } | |
| 4111 buf->writenl(); | |
| 4112 buf->writebyte('{'); | |
| 4113 buf->writenl(); | |
| 336 | 4114 if (handler) |
| 4115 handler->toCBuffer(buf, hgs); | |
| 159 | 4116 buf->writebyte('}'); |
| 4117 buf->writenl(); | |
| 4118 } | |
| 4119 | |
| 4120 /****************************** TryFinallyStatement ***************************/ | |
| 4121 | |
| 4122 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 4123 : Statement(loc) | |
| 4124 { | |
| 4125 this->body = body; | |
| 4126 this->finalbody = finalbody; | |
| 4127 } | |
| 4128 | |
| 4129 Statement *TryFinallyStatement::syntaxCopy() | |
| 4130 { | |
| 4131 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 4132 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 4133 return s; | |
| 4134 } | |
| 4135 | |
| 4136 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 4137 { | |
| 4138 //printf("TryFinallyStatement::semantic()\n"); | |
| 4139 | |
|
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|
4140 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
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diff
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|
4141 sc->enclosingScopeExit = this; |
| 159 | 4142 body = body->semantic(sc); |
|
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|
4143 sc->enclosingScopeExit = oldScopeExit; |
| 159 | 4144 |
| 4145 sc = sc->push(); | |
|
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|
4146 sc->enclosingFinally = this; |
| 159 | 4147 sc->sbreak = NULL; |
| 4148 sc->scontinue = NULL; // no break or continue out of finally block | |
| 4149 finalbody = finalbody->semantic(sc); | |
| 4150 sc->pop(); | |
| 4151 return this; | |
| 4152 } | |
| 4153 | |
| 4154 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4155 { | |
| 4156 buf->printf("try\n{\n"); | |
| 4157 body->toCBuffer(buf, hgs); | |
| 4158 buf->printf("}\nfinally\n{\n"); | |
| 4159 finalbody->toCBuffer(buf, hgs); | |
| 4160 buf->writeByte('}'); | |
| 4161 buf->writenl(); | |
| 4162 } | |
| 4163 | |
| 4164 int TryFinallyStatement::hasBreak() | |
| 4165 { | |
| 4166 return FALSE; //TRUE; | |
| 4167 } | |
| 4168 | |
| 4169 int TryFinallyStatement::hasContinue() | |
| 4170 { | |
| 4171 return FALSE; //TRUE; | |
| 4172 } | |
| 4173 | |
| 4174 int TryFinallyStatement::usesEH() | |
| 4175 { | |
| 4176 return TRUE; | |
| 4177 } | |
| 4178 | |
| 336 | 4179 int TryFinallyStatement::blockExit() |
| 4180 { | |
|
875
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diff
changeset
|
4181 if (body) |
|
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diff
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|
4182 return body->blockExit(); |
|
330f999ade44
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|
4183 return BEfallthru; |
| 336 | 4184 } |
| 4185 | |
| 159 | 4186 |
| 4187 /****************************** OnScopeStatement ***************************/ | |
| 4188 | |
| 4189 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 4190 : Statement(loc) | |
| 4191 { | |
| 4192 this->tok = tok; | |
| 4193 this->statement = statement; | |
| 4194 } | |
| 4195 | |
| 4196 Statement *OnScopeStatement::syntaxCopy() | |
| 4197 { | |
| 4198 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 4199 tok, statement->syntaxCopy()); | |
| 4200 return s; | |
| 4201 } | |
| 4202 | |
| 4203 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 4204 { | |
| 4205 /* semantic is called on results of scopeCode() */ | |
| 4206 return this; | |
| 4207 } | |
| 4208 | |
| 336 | 4209 int OnScopeStatement::blockExit() |
| 4210 { // At this point, this statement is just an empty placeholder | |
| 4211 return BEfallthru; | |
| 4212 } | |
| 4213 | |
| 159 | 4214 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4215 { | |
| 4216 buf->writestring(Token::toChars(tok)); | |
| 4217 buf->writebyte(' '); | |
| 4218 statement->toCBuffer(buf, hgs); | |
| 4219 } | |
| 4220 | |
| 4221 int OnScopeStatement::usesEH() | |
| 4222 { | |
| 4223 return (tok != TOKon_scope_success); | |
| 4224 } | |
| 4225 | |
| 1587 | 4226 void OnScopeStatement::scopeCode(Scope *sc, Statement **sentry, Statement **sexception, Statement **sfinally) |
| 159 | 4227 { |
| 4228 //printf("OnScopeStatement::scopeCode()\n"); | |
| 4229 //print(); | |
| 4230 *sentry = NULL; | |
| 4231 *sexception = NULL; | |
| 4232 *sfinally = NULL; | |
| 4233 switch (tok) | |
| 4234 { | |
| 4235 case TOKon_scope_exit: | |
| 4236 *sfinally = statement; | |
| 4237 break; | |
| 4238 | |
| 4239 case TOKon_scope_failure: | |
| 4240 *sexception = statement; | |
| 4241 break; | |
| 4242 | |
| 4243 case TOKon_scope_success: | |
| 4244 { | |
| 4245 /* Create: | |
| 4246 * sentry: int x = 0; | |
| 4247 * sexception: x = 1; | |
| 4248 * sfinally: if (!x) statement; | |
| 4249 */ | |
|
846
bc982f1ad106
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parents:
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diff
changeset
|
4250 Identifier *id = Lexer::uniqueId("__os"); |
| 159 | 4251 |
| 4252 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 4253 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 4254 *sentry = new DeclarationStatement(loc, v); | |
| 4255 | |
| 4256 Expression *e = new IntegerExp(1); | |
| 4257 e = new AssignExp(0, new VarExp(0, v), e); | |
| 4258 *sexception = new ExpStatement(0, e); | |
| 4259 | |
| 4260 e = new VarExp(0, v); | |
| 4261 e = new NotExp(0, e); | |
| 4262 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 4263 | |
| 4264 break; | |
| 4265 } | |
| 4266 | |
| 4267 default: | |
| 4268 assert(0); | |
| 4269 } | |
| 4270 } | |
| 4271 | |
| 4272 /******************************** ThrowStatement ***************************/ | |
| 4273 | |
| 4274 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 4275 : Statement(loc) | |
| 4276 { | |
| 4277 this->exp = exp; | |
| 4278 } | |
| 4279 | |
| 4280 Statement *ThrowStatement::syntaxCopy() | |
| 4281 { | |
| 4282 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 4283 return s; | |
| 4284 } | |
| 4285 | |
| 4286 Statement *ThrowStatement::semantic(Scope *sc) | |
| 4287 { | |
| 4288 //printf("ThrowStatement::semantic()\n"); | |
| 4289 | |
| 4290 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 4291 fd->hasReturnExp |= 2; | |
| 4292 | |
| 4293 if (sc->incontract) | |
| 4294 error("Throw statements cannot be in contracts"); | |
| 4295 exp = exp->semantic(sc); | |
| 4296 exp = resolveProperties(sc, exp); | |
| 4297 if (!exp->type->toBasetype()->isClassHandle()) | |
| 4298 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 4299 return this; | |
| 4300 } | |
| 4301 | |
| 336 | 4302 int ThrowStatement::blockExit() |
| 4303 { | |
| 4304 return BEthrow; // obviously | |
| 4305 } | |
| 4306 | |
| 1587 | 4307 |
| 159 | 4308 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4309 { | |
| 4310 buf->printf("throw "); | |
| 4311 exp->toCBuffer(buf, hgs); | |
| 4312 buf->writeByte(';'); | |
| 4313 buf->writenl(); | |
| 4314 } | |
| 4315 | |
| 4316 /******************************** VolatileStatement **************************/ | |
| 4317 | |
| 4318 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 4319 : Statement(loc) | |
| 4320 { | |
| 4321 this->statement = statement; | |
| 4322 } | |
| 4323 | |
| 4324 Statement *VolatileStatement::syntaxCopy() | |
| 4325 { | |
| 4326 VolatileStatement *s = new VolatileStatement(loc, | |
| 4327 statement ? statement->syntaxCopy() : NULL); | |
| 4328 return s; | |
| 4329 } | |
| 4330 | |
| 4331 Statement *VolatileStatement::semantic(Scope *sc) | |
| 4332 { | |
| 309 | 4333 if (statement) |
| 4334 { | |
|
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|
4335 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
f99a3b393c03
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diff
changeset
|
4336 sc->enclosingScopeExit = this; |
|
f99a3b393c03
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parents:
1133
diff
changeset
|
4337 statement = statement->semantic(sc); |
|
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diff
changeset
|
4338 sc->enclosingScopeExit = oldScopeExit; |
| 309 | 4339 } |
| 159 | 4340 return this; |
| 4341 } | |
| 4342 | |
| 4343 Statements *VolatileStatement::flatten(Scope *sc) | |
| 4344 { | |
| 4345 Statements *a; | |
| 4346 | |
| 4347 a = statement ? statement->flatten(sc) : NULL; | |
| 4348 if (a) | |
| 4349 { for (int i = 0; i < a->dim; i++) | |
| 4350 { Statement *s = (Statement *)a->data[i]; | |
| 4351 | |
| 4352 s = new VolatileStatement(loc, s); | |
| 4353 a->data[i] = s; | |
| 4354 } | |
| 4355 } | |
| 4356 | |
| 4357 return a; | |
| 4358 } | |
| 4359 | |
| 336 | 4360 int VolatileStatement::blockExit() |
| 4361 { | |
| 4362 return statement ? statement->blockExit() : BEfallthru; | |
| 4363 } | |
| 4364 | |
| 1587 | 4365 |
| 159 | 4366 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4367 { | |
| 4368 buf->writestring("volatile"); | |
| 4369 if (statement) | |
| 4370 { if (statement->isScopeStatement()) | |
| 4371 buf->writenl(); | |
| 4372 else | |
| 4373 buf->writebyte(' '); | |
| 4374 statement->toCBuffer(buf, hgs); | |
| 4375 } | |
| 4376 } | |
| 4377 | |
| 4378 | |
| 4379 /******************************** GotoStatement ***************************/ | |
| 4380 | |
| 4381 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 4382 : Statement(loc) | |
| 4383 { | |
| 4384 this->ident = ident; | |
| 4385 this->label = NULL; | |
|
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|
4386 this->enclosingFinally = NULL; |
|
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|
4387 this->enclosingScopeExit = NULL; |
| 159 | 4388 } |
| 4389 | |
| 4390 Statement *GotoStatement::syntaxCopy() | |
| 4391 { | |
| 4392 GotoStatement *s = new GotoStatement(loc, ident); | |
| 4393 return s; | |
| 4394 } | |
| 4395 | |
| 4396 Statement *GotoStatement::semantic(Scope *sc) | |
| 4397 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 4398 | |
| 4399 //printf("GotoStatement::semantic()\n"); | |
|
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|
4400 enclosingFinally = sc->enclosingFinally; |
|
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|
4401 enclosingScopeExit = sc->enclosingScopeExit; |
|
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|
4402 |
| 159 | 4403 label = fd->searchLabel(ident); |
| 4404 if (!label->statement && sc->fes) | |
| 4405 { | |
| 4406 /* Either the goto label is forward referenced or it | |
| 4407 * is in the function that the enclosing foreach is in. | |
| 4408 * Can't know yet, so wrap the goto in a compound statement | |
| 4409 * so we can patch it later, and add it to a 'look at this later' | |
| 4410 * list. | |
| 4411 */ | |
| 4412 Statements *a = new Statements(); | |
| 4413 Statement *s; | |
| 4414 | |
| 4415 a->push(this); | |
| 4416 s = new CompoundStatement(loc, a); | |
| 4417 sc->fes->gotos.push(s); // 'look at this later' list | |
| 4418 return s; | |
| 4419 } | |
|
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|
4420 if (label->statement && label->statement->enclosingFinally != sc->enclosingFinally) |
| 159 | 4421 error("cannot goto in or out of finally block"); |
| 4422 return this; | |
| 4423 } | |
| 4424 | |
| 336 | 4425 int GotoStatement::blockExit() |
| 4426 { | |
| 4427 //printf("GotoStatement::blockExit(%p)\n", this); | |
| 4428 return BEgoto; | |
| 4429 } | |
| 4430 | |
| 1587 | 4431 |
| 159 | 4432 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4433 { | |
| 4434 buf->writestring("goto "); | |
| 4435 buf->writestring(ident->toChars()); | |
| 4436 buf->writebyte(';'); | |
| 4437 buf->writenl(); | |
| 4438 } | |
| 4439 | |
| 4440 /******************************** LabelStatement ***************************/ | |
| 4441 | |
| 4442 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 4443 : Statement(loc) | |
| 4444 { | |
| 4445 this->ident = ident; | |
| 4446 this->statement = statement; | |
|
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|
4447 this->enclosingFinally = NULL; |
|
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|
4448 this->enclosingScopeExit = NULL; |
| 159 | 4449 this->lblock = NULL; |
| 4450 this->isReturnLabel = 0; | |
|
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|
4451 this->asmLabel = false; |
| 159 | 4452 } |
| 4453 | |
| 4454 Statement *LabelStatement::syntaxCopy() | |
| 4455 { | |
| 4456 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 4457 return s; | |
| 4458 } | |
| 4459 | |
| 4460 Statement *LabelStatement::semantic(Scope *sc) | |
| 4461 { LabelDsymbol *ls; | |
| 4462 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 4463 | |
| 4464 //printf("LabelStatement::semantic()\n"); | |
| 4465 ls = fd->searchLabel(ident); | |
| 4466 if (ls->statement) | |
| 4467 error("Label '%s' already defined", ls->toChars()); | |
| 4468 else | |
| 4469 ls->statement = this; | |
|
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|
4470 |
|
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|
4471 enclosingFinally = sc->enclosingFinally; |
|
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|
4472 enclosingScopeExit = sc->enclosingScopeExit; |
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|
4473 |
| 159 | 4474 sc = sc->push(); |
| 4475 sc->scopesym = sc->enclosing->scopesym; | |
| 4476 sc->callSuper |= CSXlabel; | |
| 4477 sc->slabel = this; | |
| 4478 if (statement) | |
| 4479 statement = statement->semantic(sc); | |
| 4480 sc->pop(); | |
|
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|
4481 |
|
664
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|
4482 // LDC put in labmap |
|
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|
4483 fd->labmap[ident->toChars()] = this; |
|
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|
4484 |
| 159 | 4485 return this; |
| 4486 } | |
| 4487 | |
| 4488 Statements *LabelStatement::flatten(Scope *sc) | |
| 4489 { | |
| 4490 Statements *a = NULL; | |
| 4491 | |
| 4492 if (statement) | |
| 4493 { | |
| 4494 a = statement->flatten(sc); | |
| 4495 if (a) | |
| 4496 { | |
| 4497 if (!a->dim) | |
| 4498 { | |
| 4499 a->push(new ExpStatement(loc, NULL)); | |
| 4500 } | |
| 4501 Statement *s = (Statement *)a->data[0]; | |
| 4502 | |
| 4503 s = new LabelStatement(loc, ident, s); | |
| 4504 a->data[0] = s; | |
| 4505 } | |
| 4506 } | |
| 4507 | |
| 4508 return a; | |
| 4509 } | |
| 4510 | |
| 4511 | |
| 4512 int LabelStatement::usesEH() | |
| 4513 { | |
| 4514 return statement ? statement->usesEH() : FALSE; | |
| 4515 } | |
| 4516 | |
| 336 | 4517 int LabelStatement::blockExit() |
| 4518 { | |
| 4519 //printf("LabelStatement::blockExit(%p)\n", this); | |
| 4520 return statement ? statement->blockExit() : BEfallthru; | |
| 4521 } | |
| 4522 | |
| 1587 | 4523 |
| 159 | 4524 int LabelStatement::comeFrom() |
| 4525 { | |
| 4526 //printf("LabelStatement::comeFrom()\n"); | |
| 4527 return TRUE; | |
| 4528 } | |
| 4529 | |
| 4530 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4531 { | |
| 4532 buf->writestring(ident->toChars()); | |
| 4533 buf->writebyte(':'); | |
| 4534 buf->writenl(); | |
| 4535 if (statement) | |
| 4536 statement->toCBuffer(buf, hgs); | |
| 4537 } | |
| 4538 | |
| 4539 | |
| 4540 /******************************** LabelDsymbol ***************************/ | |
| 4541 | |
| 4542 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 4543 : Dsymbol(ident) | |
| 4544 { | |
| 4545 statement = NULL; | |
| 4546 } | |
| 4547 | |
| 4548 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 4549 { | |
| 4550 return this; | |
| 4551 } |