Mercurial > projects > ldc
annotate dmd/statement.c @ 1638:0de4525a9ed6
Apply workaround for #395 by klickverbot.
| author | Christian Kamm <kamm incasoftware de> |
|---|---|
| date | Mon, 08 Mar 2010 20:06:08 +0100 |
| parents | 44b145be2ef5 |
| children | 9bf06e02070b |
| rev | line source |
|---|---|
| 159 | 1 |
| 2 // Compiler implementation of the D programming language | |
|
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3 // Copyright (c) 1999-2009 by Digital Mars |
| 159 | 4 // All Rights Reserved |
| 5 // written by Walter Bright | |
| 6 // http://www.digitalmars.com | |
| 7 // License for redistribution is by either the Artistic License | |
| 8 // in artistic.txt, or the GNU General Public License in gnu.txt. | |
| 9 // See the included readme.txt for details. | |
| 10 | |
| 11 #include <stdio.h> | |
| 12 #include <stdlib.h> | |
| 13 #include <assert.h> | |
| 14 | |
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15 #include "rmem.h" |
| 159 | 16 |
| 17 #include "statement.h" | |
| 18 #include "expression.h" | |
| 19 #include "cond.h" | |
| 20 #include "init.h" | |
| 21 #include "staticassert.h" | |
| 22 #include "mtype.h" | |
| 23 #include "scope.h" | |
| 24 #include "declaration.h" | |
| 25 #include "aggregate.h" | |
| 26 #include "id.h" | |
| 27 #include "hdrgen.h" | |
| 28 #include "parse.h" | |
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29 #include "template.h" |
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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 { |
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104 if (global.params.warnings && !global.gag) |
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105 { |
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106 va_list ap; |
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107 va_start(ap, format); |
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108 ::vwarning(loc, format, ap); |
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109 va_end( ap ); |
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110 } |
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111 } |
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112 |
| 159 | 113 int Statement::hasBreak() |
| 114 { | |
| 115 //printf("Statement::hasBreak()\n"); | |
| 116 return FALSE; | |
| 117 } | |
| 118 | |
| 119 int Statement::hasContinue() | |
| 120 { | |
| 121 return FALSE; | |
| 122 } | |
| 123 | |
| 124 // TRUE if statement uses exception handling | |
| 125 | |
| 126 int Statement::usesEH() | |
| 127 { | |
| 128 return FALSE; | |
| 129 } | |
| 130 | |
| 336 | 131 /* Only valid after semantic analysis |
| 132 */ | |
| 133 int Statement::blockExit() | |
| 134 { | |
| 135 printf("Statement::blockExit(%p)\n", this); | |
| 136 printf("%s\n", toChars()); | |
| 137 assert(0); | |
| 138 return BEany; | |
| 139 } | |
| 140 | |
| 159 | 141 // TRUE if statement 'comes from' somewhere else, like a goto |
| 142 | |
| 143 int Statement::comeFrom() | |
| 144 { | |
| 145 //printf("Statement::comeFrom()\n"); | |
| 146 return FALSE; | |
| 147 } | |
| 148 | |
| 1587 | 149 // Return TRUE if statement has no code in it |
| 150 int Statement::isEmpty() | |
| 151 { | |
| 152 //printf("Statement::isEmpty()\n"); | |
| 153 return FALSE; | |
| 154 } | |
| 155 | |
| 159 | 156 /**************************************** |
| 157 * If this statement has code that needs to run in a finally clause | |
| 158 * at the end of the current scope, return that code in the form of | |
| 159 * a Statement. | |
| 160 * Output: | |
| 161 * *sentry code executed upon entry to the scope | |
| 162 * *sexception code executed upon exit from the scope via exception | |
| 163 * *sfinally code executed in finally block | |
| 164 */ | |
| 165 | |
| 1587 | 166 void Statement::scopeCode(Scope *sc, Statement **sentry, Statement **sexception, Statement **sfinally) |
| 159 | 167 { |
| 168 //printf("Statement::scopeCode()\n"); | |
| 169 //print(); | |
| 170 *sentry = NULL; | |
| 171 *sexception = NULL; | |
| 172 *sfinally = NULL; | |
| 173 } | |
| 174 | |
| 175 /********************************* | |
| 176 * Flatten out the scope by presenting the statement | |
| 177 * as an array of statements. | |
| 178 * Returns NULL if no flattening necessary. | |
| 179 */ | |
| 180 | |
| 181 Statements *Statement::flatten(Scope *sc) | |
| 182 { | |
| 183 return NULL; | |
| 184 } | |
| 185 | |
| 186 | |
| 1587 | 187 /******************************** PeelStatement ***************************/ |
| 188 | |
| 189 PeelStatement::PeelStatement(Statement *s) | |
| 190 : Statement(s->loc) | |
| 191 { | |
| 192 this->s = s; | |
| 193 } | |
| 194 | |
| 195 Statement *PeelStatement::semantic(Scope *sc) | |
| 196 { | |
| 197 /* "peel" off this wrapper, and don't run semantic() | |
| 198 * on the result. | |
| 199 */ | |
| 200 return s; | |
| 201 } | |
| 202 | |
| 159 | 203 /******************************** ExpStatement ***************************/ |
| 204 | |
| 205 ExpStatement::ExpStatement(Loc loc, Expression *exp) | |
| 206 : Statement(loc) | |
| 207 { | |
| 208 this->exp = exp; | |
| 209 } | |
| 210 | |
| 211 Statement *ExpStatement::syntaxCopy() | |
| 212 { | |
| 213 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 214 ExpStatement *es = new ExpStatement(loc, e); | |
| 215 return es; | |
| 216 } | |
| 217 | |
| 218 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 219 { | |
| 220 if (exp) | |
| 221 exp->toCBuffer(buf, hgs); | |
| 222 buf->writeByte(';'); | |
| 223 if (!hgs->FLinit.init) | |
| 224 buf->writenl(); | |
| 225 } | |
| 226 | |
| 227 Statement *ExpStatement::semantic(Scope *sc) | |
| 228 { | |
| 229 if (exp) | |
| 230 { | |
| 231 //printf("ExpStatement::semantic() %s\n", exp->toChars()); | |
| 232 exp = exp->semantic(sc); | |
| 233 exp = resolveProperties(sc, exp); | |
| 234 exp->checkSideEffect(0); | |
| 235 exp = exp->optimize(0); | |
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236 if (exp->op == TOKdeclaration && !isDeclarationStatement()) |
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237 { Statement *s = new DeclarationStatement(loc, exp); |
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238 return s; |
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239 } |
| 159 | 240 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0); |
| 241 } | |
| 242 return this; | |
| 243 } | |
| 244 | |
| 336 | 245 int ExpStatement::blockExit() |
| 246 { int result = BEfallthru; | |
| 247 | |
| 248 if (exp) | |
| 249 { | |
| 250 if (exp->op == TOKhalt) | |
| 251 return BEhalt; | |
| 252 if (exp->op == TOKassert) | |
| 253 { AssertExp *a = (AssertExp *)exp; | |
| 254 | |
| 255 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 256 return BEhalt; | |
| 257 } | |
| 258 if (exp->canThrow()) | |
| 259 result |= BEthrow; | |
| 260 } | |
| 261 return result; | |
| 262 } | |
| 263 | |
| 1587 | 264 int ExpStatement::isEmpty() |
| 265 { | |
| 266 return exp == NULL; | |
| 267 } | |
| 268 | |
| 159 | 269 |
| 270 /******************************** CompileStatement ***************************/ | |
| 271 | |
| 272 CompileStatement::CompileStatement(Loc loc, Expression *exp) | |
| 273 : Statement(loc) | |
| 274 { | |
| 275 this->exp = exp; | |
| 276 } | |
| 277 | |
| 278 Statement *CompileStatement::syntaxCopy() | |
| 279 { | |
| 280 Expression *e = exp->syntaxCopy(); | |
| 281 CompileStatement *es = new CompileStatement(loc, e); | |
| 282 return es; | |
| 283 } | |
| 284 | |
| 285 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 286 { | |
| 287 buf->writestring("mixin("); | |
| 288 exp->toCBuffer(buf, hgs); | |
| 289 buf->writestring(");"); | |
| 290 if (!hgs->FLinit.init) | |
| 291 buf->writenl(); | |
| 292 } | |
| 293 | |
| 336 | 294 Statements *CompileStatement::flatten(Scope *sc) |
| 159 | 295 { |
| 336 | 296 //printf("CompileStatement::flatten() %s\n", exp->toChars()); |
| 159 | 297 exp = exp->semantic(sc); |
| 298 exp = resolveProperties(sc, exp); | |
| 299 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 300 if (exp->op != TOKstring) | |
| 301 { error("argument to mixin must be a string, not (%s)", exp->toChars()); | |
| 336 | 302 return NULL; |
| 159 | 303 } |
| 304 StringExp *se = (StringExp *)exp; | |
| 305 se = se->toUTF8(sc); | |
| 306 Parser p(sc->module, (unsigned char *)se->string, se->len, 0); | |
| 307 p.loc = loc; | |
| 308 p.nextToken(); | |
| 309 | |
| 336 | 310 Statements *a = new Statements(); |
| 159 | 311 while (p.token.value != TOKeof) |
| 312 { | |
| 313 Statement *s = p.parseStatement(PSsemi | PScurlyscope); | |
| 336 | 314 a->push(s); |
| 159 | 315 } |
| 336 | 316 return a; |
| 317 } | |
| 318 | |
| 319 Statement *CompileStatement::semantic(Scope *sc) | |
| 320 { | |
| 321 //printf("CompileStatement::semantic() %s\n", exp->toChars()); | |
| 322 Statements *a = flatten(sc); | |
| 323 if (!a) | |
| 324 return NULL; | |
| 325 Statement *s = new CompoundStatement(loc, a); | |
| 159 | 326 return s->semantic(sc); |
| 327 } | |
| 328 | |
| 329 | |
| 330 /******************************** DeclarationStatement ***************************/ | |
| 331 | |
| 332 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration) | |
| 333 : ExpStatement(loc, new DeclarationExp(loc, declaration)) | |
| 334 { | |
| 335 } | |
| 336 | |
| 337 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp) | |
| 338 : ExpStatement(loc, exp) | |
| 339 { | |
| 340 } | |
| 341 | |
| 342 Statement *DeclarationStatement::syntaxCopy() | |
| 343 { | |
| 344 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy()); | |
| 345 return ds; | |
| 346 } | |
| 347 | |
| 1587 | 348 void DeclarationStatement::scopeCode(Scope *sc, Statement **sentry, Statement **sexception, Statement **sfinally) |
| 159 | 349 { |
| 350 //printf("DeclarationStatement::scopeCode()\n"); | |
| 351 //print(); | |
| 352 | |
| 353 *sentry = NULL; | |
| 354 *sexception = NULL; | |
| 355 *sfinally = NULL; | |
| 356 | |
| 357 if (exp) | |
| 358 { | |
| 359 if (exp->op == TOKdeclaration) | |
| 360 { | |
| 361 DeclarationExp *de = (DeclarationExp *)(exp); | |
| 362 VarDeclaration *v = de->declaration->isVarDeclaration(); | |
| 363 if (v) | |
| 364 { Expression *e; | |
| 365 | |
| 1587 | 366 e = v->callScopeDtor(sc); |
| 159 | 367 if (e) |
| 368 { | |
| 369 //printf("dtor is: "); e->print(); | |
| 370 *sfinally = new ExpStatement(loc, e); | |
| 371 } | |
| 372 } | |
| 373 } | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 378 { | |
| 379 exp->toCBuffer(buf, hgs); | |
| 380 } | |
| 381 | |
| 382 | |
| 383 /******************************** CompoundStatement ***************************/ | |
| 384 | |
| 385 CompoundStatement::CompoundStatement(Loc loc, Statements *s) | |
| 386 : Statement(loc) | |
| 387 { | |
| 388 statements = s; | |
| 389 } | |
| 390 | |
| 391 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2) | |
| 392 : Statement(loc) | |
| 393 { | |
| 394 statements = new Statements(); | |
| 395 statements->reserve(2); | |
| 396 statements->push(s1); | |
| 397 statements->push(s2); | |
| 398 } | |
| 399 | |
| 400 Statement *CompoundStatement::syntaxCopy() | |
| 401 { | |
| 402 Statements *a = new Statements(); | |
| 403 a->setDim(statements->dim); | |
| 404 for (size_t i = 0; i < statements->dim; i++) | |
| 405 { Statement *s = (Statement *)statements->data[i]; | |
| 406 if (s) | |
| 407 s = s->syntaxCopy(); | |
| 408 a->data[i] = s; | |
| 409 } | |
| 410 CompoundStatement *cs = new CompoundStatement(loc, a); | |
| 411 return cs; | |
| 412 } | |
| 413 | |
| 414 | |
| 415 Statement *CompoundStatement::semantic(Scope *sc) | |
| 416 { Statement *s; | |
| 417 | |
| 418 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 419 | |
| 420 for (size_t i = 0; i < statements->dim; ) | |
| 421 { | |
| 422 s = (Statement *) statements->data[i]; | |
| 423 if (s) | |
| 424 { Statements *a = s->flatten(sc); | |
| 425 | |
| 426 if (a) | |
| 427 { | |
| 428 statements->remove(i); | |
| 429 statements->insert(i, a); | |
| 430 continue; | |
| 431 } | |
| 432 s = s->semantic(sc); | |
| 433 statements->data[i] = s; | |
| 434 if (s) | |
| 435 { | |
| 436 Statement *sentry; | |
| 437 Statement *sexception; | |
| 438 Statement *sfinally; | |
| 439 | |
| 1587 | 440 s->scopeCode(sc, &sentry, &sexception, &sfinally); |
| 159 | 441 if (sentry) |
| 442 { | |
| 443 sentry = sentry->semantic(sc); | |
| 444 statements->data[i] = sentry; | |
| 445 } | |
| 446 if (sexception) | |
| 447 { | |
| 448 if (i + 1 == statements->dim && !sfinally) | |
| 449 { | |
| 450 #if 1 | |
| 451 sexception = sexception->semantic(sc); | |
| 452 #else | |
| 453 statements->push(sexception); | |
| 454 if (sfinally) | |
| 455 // Assume sexception does not throw | |
| 456 statements->push(sfinally); | |
| 457 #endif | |
| 458 } | |
| 459 else | |
| 460 { | |
| 461 /* Rewrite: | |
| 462 * s; s1; s2; | |
| 463 * As: | |
| 464 * s; | |
| 465 * try { s1; s2; } | |
| 466 * catch (Object __o) | |
| 467 * { sexception; throw __o; } | |
| 468 */ | |
| 469 Statement *body; | |
| 470 Statements *a = new Statements(); | |
| 471 | |
| 472 for (int j = i + 1; j < statements->dim; j++) | |
| 473 { | |
| 474 a->push(statements->data[j]); | |
| 475 } | |
| 476 body = new CompoundStatement(0, a); | |
| 477 body = new ScopeStatement(0, body); | |
| 478 | |
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479 Identifier *id = Lexer::uniqueId("__o"); |
| 159 | 480 |
| 481 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id)); | |
| 482 handler = new CompoundStatement(0, sexception, handler); | |
| 483 | |
| 484 Array *catches = new Array(); | |
| 485 Catch *ctch = new Catch(0, NULL, id, handler); | |
| 486 catches->push(ctch); | |
| 487 s = new TryCatchStatement(0, body, catches); | |
| 488 | |
| 489 if (sfinally) | |
| 490 s = new TryFinallyStatement(0, s, sfinally); | |
| 491 s = s->semantic(sc); | |
| 492 statements->setDim(i + 1); | |
| 493 statements->push(s); | |
| 494 break; | |
| 495 } | |
| 496 } | |
| 497 else if (sfinally) | |
| 498 { | |
| 499 if (0 && i + 1 == statements->dim) | |
| 500 { | |
| 501 statements->push(sfinally); | |
| 502 } | |
| 503 else | |
| 504 { | |
| 505 /* Rewrite: | |
| 506 * s; s1; s2; | |
| 507 * As: | |
| 508 * s; try { s1; s2; } finally { sfinally; } | |
| 509 */ | |
| 510 Statement *body; | |
| 511 Statements *a = new Statements(); | |
| 512 | |
| 513 for (int j = i + 1; j < statements->dim; j++) | |
| 514 { | |
| 515 a->push(statements->data[j]); | |
| 516 } | |
| 517 body = new CompoundStatement(0, a); | |
| 518 s = new TryFinallyStatement(0, body, sfinally); | |
| 519 s = s->semantic(sc); | |
| 520 statements->setDim(i + 1); | |
| 521 statements->push(s); | |
| 522 break; | |
| 523 } | |
| 524 } | |
| 525 } | |
| 526 } | |
| 527 i++; | |
| 528 } | |
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529 if (statements->dim == 1 && !isAsmBlockStatement()) |
| 336 | 530 { |
| 531 return (Statement *)statements->data[0]; | |
| 532 } | |
| 159 | 533 return this; |
| 534 } | |
| 535 | |
| 536 Statements *CompoundStatement::flatten(Scope *sc) | |
| 537 { | |
| 538 return statements; | |
| 539 } | |
| 540 | |
| 541 ReturnStatement *CompoundStatement::isReturnStatement() | |
| 336 | 542 { |
| 159 | 543 ReturnStatement *rs = NULL; |
| 544 | |
| 336 | 545 for (int i = 0; i < statements->dim; i++) |
| 546 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 547 if (s) |
| 548 { | |
| 549 rs = s->isReturnStatement(); | |
| 550 if (rs) | |
| 551 break; | |
| 552 } | |
| 553 } | |
| 554 return rs; | |
| 555 } | |
| 556 | |
| 557 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 336 | 558 { |
| 559 for (int i = 0; i < statements->dim; i++) | |
| 560 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 561 if (s) |
| 562 s->toCBuffer(buf, hgs); | |
| 563 } | |
| 564 } | |
| 565 | |
| 566 int CompoundStatement::usesEH() | |
| 567 { | |
| 568 for (int i = 0; i < statements->dim; i++) | |
| 336 | 569 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 570 if (s && s->usesEH()) |
| 571 return TRUE; | |
| 572 } | |
| 573 return FALSE; | |
| 574 } | |
| 575 | |
| 336 | 576 int CompoundStatement::blockExit() |
| 577 { | |
| 578 //printf("CompoundStatement::blockExit(%p) %d\n", this, statements->dim); | |
| 579 int result = BEfallthru; | |
| 580 for (size_t i = 0; i < statements->dim; i++) | |
| 581 { Statement *s = (Statement *) statements->data[i]; | |
| 582 if (s) | |
| 583 { | |
| 584 //printf("result = x%x\n", result); | |
| 585 //printf("%s\n", s->toChars()); | |
| 586 if (!(result & BEfallthru) && !s->comeFrom()) | |
| 587 { | |
| 1587 | 588 if (s->blockExit() != BEhalt && !s->isEmpty()) |
| 589 s->warning("statement is not reachable"); | |
| 336 | 590 } |
| 1587 | 591 else |
| 592 { | |
| 593 result &= ~BEfallthru; | |
| 594 result |= s->blockExit(); | |
| 595 } | |
| 336 | 596 } |
| 597 } | |
| 598 return result; | |
| 599 } | |
| 600 | |
| 159 | 601 int CompoundStatement::comeFrom() |
| 602 { int comefrom = FALSE; | |
| 603 | |
| 604 //printf("CompoundStatement::comeFrom()\n"); | |
| 605 for (int i = 0; i < statements->dim; i++) | |
| 606 { Statement *s = (Statement *)statements->data[i]; | |
| 607 | |
| 608 if (!s) | |
| 609 continue; | |
| 610 | |
| 611 comefrom |= s->comeFrom(); | |
| 612 } | |
| 613 return comefrom; | |
| 614 } | |
| 615 | |
| 1587 | 616 int CompoundStatement::isEmpty() |
| 617 { | |
| 618 for (int i = 0; i < statements->dim; i++) | |
| 619 { Statement *s = (Statement *) statements->data[i]; | |
| 620 if (s && !s->isEmpty()) | |
| 621 return FALSE; | |
| 622 } | |
| 623 return TRUE; | |
| 624 } | |
| 625 | |
| 159 | 626 |
|
1195
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627 /******************************** CompoundDeclarationStatement ***************************/ |
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628 |
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629 CompoundDeclarationStatement::CompoundDeclarationStatement(Loc loc, Statements *s) |
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630 : CompoundStatement(loc, s) |
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631 { |
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632 statements = s; |
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633 } |
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634 |
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635 Statement *CompoundDeclarationStatement::syntaxCopy() |
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636 { |
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637 Statements *a = new Statements(); |
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638 a->setDim(statements->dim); |
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639 for (size_t i = 0; i < statements->dim; i++) |
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640 { Statement *s = (Statement *)statements->data[i]; |
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641 if (s) |
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642 s = s->syntaxCopy(); |
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643 a->data[i] = s; |
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644 } |
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645 CompoundDeclarationStatement *cs = new CompoundDeclarationStatement(loc, a); |
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646 return cs; |
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647 } |
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648 |
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649 void CompoundDeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
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650 { |
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651 int nwritten = 0; |
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652 for (int i = 0; i < statements->dim; i++) |
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653 { Statement *s = (Statement *) statements->data[i]; |
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654 if (s) |
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655 { DeclarationStatement *ds = s->isDeclarationStatement(); |
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656 assert(ds); |
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657 DeclarationExp *de = (DeclarationExp *)ds->exp; |
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658 assert(de->op == TOKdeclaration); |
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659 Declaration *d = de->declaration->isDeclaration(); |
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660 assert(d); |
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661 VarDeclaration *v = d->isVarDeclaration(); |
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662 if (v) |
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663 { |
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664 /* This essentially copies the part of VarDeclaration::toCBuffer() |
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665 * that does not print the type. |
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666 * Should refactor this. |
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667 */ |
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668 if (nwritten) |
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669 { |
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670 buf->writeByte(','); |
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671 buf->writestring(v->ident->toChars()); |
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672 } |
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673 else |
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674 { |
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675 StorageClassDeclaration::stcToCBuffer(buf, v->storage_class); |
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676 if (v->type) |
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677 v->type->toCBuffer(buf, v->ident, hgs); |
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678 else |
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679 buf->writestring(v->ident->toChars()); |
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680 } |
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681 |
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682 if (v->init) |
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683 { buf->writestring(" = "); |
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684 #if DMDV2 |
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685 ExpInitializer *ie = v->init->isExpInitializer(); |
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686 if (ie && (ie->exp->op == TOKconstruct || ie->exp->op == TOKblit)) |
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687 ((AssignExp *)ie->exp)->e2->toCBuffer(buf, hgs); |
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688 else |
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689 #endif |
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690 v->init->toCBuffer(buf, hgs); |
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691 } |
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692 } |
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693 else |
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694 d->toCBuffer(buf, hgs); |
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695 nwritten++; |
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696 } |
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697 } |
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698 buf->writeByte(';'); |
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699 if (!hgs->FLinit.init) |
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700 buf->writenl(); |
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701 } |
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702 |
| 159 | 703 /**************************** UnrolledLoopStatement ***************************/ |
| 704 | |
| 705 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s) | |
| 706 : Statement(loc) | |
| 707 { | |
| 708 statements = s; | |
| 709 } | |
| 710 | |
| 711 Statement *UnrolledLoopStatement::syntaxCopy() | |
| 712 { | |
| 713 Statements *a = new Statements(); | |
| 714 a->setDim(statements->dim); | |
| 715 for (size_t i = 0; i < statements->dim; i++) | |
| 716 { Statement *s = (Statement *)statements->data[i]; | |
| 717 if (s) | |
| 718 s = s->syntaxCopy(); | |
| 719 a->data[i] = s; | |
| 720 } | |
| 721 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
| 722 return cs; | |
| 723 } | |
| 724 | |
| 725 | |
| 726 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
| 727 { | |
| 728 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 729 | |
| 730 sc->noctor++; | |
| 731 Scope *scd = sc->push(); | |
| 732 scd->sbreak = this; | |
| 733 scd->scontinue = this; | |
| 734 | |
| 735 for (size_t i = 0; i < statements->dim; i++) | |
| 736 { | |
| 737 Statement *s = (Statement *) statements->data[i]; | |
| 738 if (s) | |
| 739 { | |
| 740 s = s->semantic(scd); | |
| 741 statements->data[i] = s; | |
| 742 } | |
| 743 } | |
| 744 | |
| 745 scd->pop(); | |
| 746 sc->noctor--; | |
| 747 return this; | |
| 748 } | |
| 749 | |
| 750 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 751 { | |
| 752 buf->writestring("unrolled {"); | |
| 753 buf->writenl(); | |
| 754 | |
| 755 for (size_t i = 0; i < statements->dim; i++) | |
| 756 { Statement *s; | |
| 757 | |
| 758 s = (Statement *) statements->data[i]; | |
| 759 if (s) | |
| 760 s->toCBuffer(buf, hgs); | |
| 761 } | |
| 762 | |
| 763 buf->writeByte('}'); | |
| 764 buf->writenl(); | |
| 765 } | |
| 766 | |
| 767 int UnrolledLoopStatement::hasBreak() | |
| 768 { | |
| 769 return TRUE; | |
| 770 } | |
| 771 | |
| 772 int UnrolledLoopStatement::hasContinue() | |
| 773 { | |
| 774 return TRUE; | |
| 775 } | |
| 776 | |
| 777 int UnrolledLoopStatement::usesEH() | |
| 778 { | |
| 779 for (size_t i = 0; i < statements->dim; i++) | |
| 336 | 780 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 781 if (s && s->usesEH()) |
| 782 return TRUE; | |
| 783 } | |
| 784 return FALSE; | |
| 785 } | |
| 786 | |
| 336 | 787 int UnrolledLoopStatement::blockExit() |
| 788 { | |
| 789 int result = BEfallthru; | |
| 790 for (size_t i = 0; i < statements->dim; i++) | |
| 791 { Statement *s = (Statement *) statements->data[i]; | |
| 792 if (s) | |
| 793 { | |
| 794 int r = s->blockExit(); | |
| 795 result |= r & ~(BEbreak | BEcontinue); | |
| 796 } | |
| 797 } | |
| 798 return result; | |
| 799 } | |
| 800 | |
| 159 | 801 int UnrolledLoopStatement::comeFrom() |
| 802 { int comefrom = FALSE; | |
| 803 | |
| 804 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
| 805 for (size_t i = 0; i < statements->dim; i++) | |
| 806 { Statement *s = (Statement *)statements->data[i]; | |
| 807 | |
| 808 if (!s) | |
| 809 continue; | |
| 810 | |
| 811 comefrom |= s->comeFrom(); | |
| 812 } | |
| 813 return comefrom; | |
| 814 } | |
| 815 | |
| 816 | |
| 817 /******************************** ScopeStatement ***************************/ | |
| 818 | |
| 819 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
| 820 : Statement(loc) | |
| 821 { | |
| 822 this->statement = s; | |
| 823 } | |
| 824 | |
| 825 Statement *ScopeStatement::syntaxCopy() | |
| 826 { | |
| 827 Statement *s; | |
| 828 | |
| 829 s = statement ? statement->syntaxCopy() : NULL; | |
| 830 s = new ScopeStatement(loc, s); | |
| 831 return s; | |
| 832 } | |
| 833 | |
| 834 | |
| 835 Statement *ScopeStatement::semantic(Scope *sc) | |
| 836 { ScopeDsymbol *sym; | |
| 837 | |
| 838 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
| 839 if (statement) | |
| 840 { Statements *a; | |
| 841 | |
| 842 sym = new ScopeDsymbol(); | |
| 843 sym->parent = sc->scopesym; | |
| 844 sc = sc->push(sym); | |
| 845 | |
| 846 a = statement->flatten(sc); | |
| 847 if (a) | |
| 848 { | |
| 849 statement = new CompoundStatement(loc, a); | |
| 850 } | |
| 851 | |
| 852 statement = statement->semantic(sc); | |
| 853 if (statement) | |
| 854 { | |
| 855 Statement *sentry; | |
| 856 Statement *sexception; | |
| 857 Statement *sfinally; | |
| 858 | |
| 1587 | 859 statement->scopeCode(sc, &sentry, &sexception, &sfinally); |
| 159 | 860 if (sfinally) |
| 861 { | |
| 862 //printf("adding sfinally\n"); | |
| 863 statement = new CompoundStatement(loc, statement, sfinally); | |
| 864 } | |
| 865 } | |
| 866 | |
| 867 sc->pop(); | |
| 868 } | |
| 869 return this; | |
| 870 } | |
| 871 | |
| 872 int ScopeStatement::hasBreak() | |
| 873 { | |
| 874 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
| 875 return statement ? statement->hasBreak() : FALSE; | |
| 876 } | |
| 877 | |
| 878 int ScopeStatement::hasContinue() | |
| 879 { | |
| 880 return statement ? statement->hasContinue() : FALSE; | |
| 881 } | |
| 882 | |
| 883 int ScopeStatement::usesEH() | |
| 884 { | |
| 885 return statement ? statement->usesEH() : FALSE; | |
| 886 } | |
| 887 | |
| 336 | 888 int ScopeStatement::blockExit() |
| 889 { | |
| 890 //printf("ScopeStatement::blockExit(%p)\n", statement); | |
| 891 return statement ? statement->blockExit() : BEfallthru; | |
| 892 } | |
| 893 | |
| 1587 | 894 |
| 159 | 895 int ScopeStatement::comeFrom() |
| 896 { | |
| 897 //printf("ScopeStatement::comeFrom()\n"); | |
| 898 return statement ? statement->comeFrom() : FALSE; | |
| 899 } | |
| 900 | |
| 1587 | 901 int ScopeStatement::isEmpty() |
| 902 { | |
| 903 //printf("ScopeStatement::isEmpty() %d\n", statement ? statement->isEmpty() : TRUE); | |
| 904 return statement ? statement->isEmpty() : TRUE; | |
| 905 } | |
| 906 | |
| 159 | 907 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 908 { | |
| 909 buf->writeByte('{'); | |
| 910 buf->writenl(); | |
| 911 | |
| 912 if (statement) | |
| 913 statement->toCBuffer(buf, hgs); | |
| 914 | |
| 915 buf->writeByte('}'); | |
| 916 buf->writenl(); | |
| 917 } | |
| 918 | |
| 919 /******************************** WhileStatement ***************************/ | |
| 920 | |
| 921 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
| 922 : Statement(loc) | |
| 923 { | |
| 924 condition = c; | |
| 925 body = b; | |
| 926 } | |
| 927 | |
| 928 Statement *WhileStatement::syntaxCopy() | |
| 929 { | |
| 930 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 931 return s; | |
| 932 } | |
| 933 | |
| 934 | |
| 935 Statement *WhileStatement::semantic(Scope *sc) | |
| 936 { | |
| 1587 | 937 /* Rewrite as a for(;condition;) loop |
| 938 */ | |
| 939 | |
| 940 Statement *s = new ForStatement(loc, NULL, condition, NULL, body); | |
| 941 s = s->semantic(sc); | |
| 942 return s; | |
| 159 | 943 } |
| 944 | |
| 945 int WhileStatement::hasBreak() | |
| 946 { | |
| 947 return TRUE; | |
| 948 } | |
| 949 | |
| 950 int WhileStatement::hasContinue() | |
| 951 { | |
| 952 return TRUE; | |
| 953 } | |
| 954 | |
| 955 int WhileStatement::usesEH() | |
| 956 { | |
| 1587 | 957 assert(0); |
| 159 | 958 return body ? body->usesEH() : 0; |
| 959 } | |
| 960 | |
| 336 | 961 int WhileStatement::blockExit() |
| 962 { | |
| 1587 | 963 assert(0); |
| 336 | 964 //printf("WhileStatement::blockExit(%p)\n", this); |
| 965 | |
| 966 int result = BEnone; | |
| 967 if (condition->canThrow()) | |
| 968 result |= BEthrow; | |
| 969 if (condition->isBool(TRUE)) | |
| 970 { | |
| 971 if (body) | |
| 972 { result |= body->blockExit(); | |
| 973 if (result & BEbreak) | |
| 974 result |= BEfallthru; | |
| 975 } | |
| 976 } | |
| 977 else if (condition->isBool(FALSE)) | |
| 978 { | |
| 979 result |= BEfallthru; | |
| 980 } | |
| 981 else | |
| 982 { | |
| 983 if (body) | |
| 984 result |= body->blockExit(); | |
| 985 result |= BEfallthru; | |
| 986 } | |
| 987 result &= ~(BEbreak | BEcontinue); | |
| 988 return result; | |
| 989 } | |
| 990 | |
|
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991 |
| 159 | 992 int WhileStatement::comeFrom() |
| 993 { | |
| 1587 | 994 assert(0); |
| 159 | 995 if (body) |
| 996 return body->comeFrom(); | |
| 997 return FALSE; | |
| 998 } | |
| 999 | |
| 1000 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1001 { | |
| 1002 buf->writestring("while ("); | |
| 1003 condition->toCBuffer(buf, hgs); | |
| 1004 buf->writebyte(')'); | |
| 1005 buf->writenl(); | |
| 1006 if (body) | |
| 1007 body->toCBuffer(buf, hgs); | |
| 1008 } | |
| 1009 | |
| 1010 /******************************** DoStatement ***************************/ | |
| 1011 | |
| 1012 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
| 1013 : Statement(loc) | |
| 1014 { | |
| 1015 body = b; | |
| 1016 condition = c; | |
| 1017 } | |
| 1018 | |
| 1019 Statement *DoStatement::syntaxCopy() | |
| 1020 { | |
| 1021 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
| 1022 return s; | |
| 1023 } | |
| 1024 | |
| 1025 | |
| 1026 Statement *DoStatement::semantic(Scope *sc) | |
| 1027 { | |
| 1028 sc->noctor++; | |
| 1029 if (body) | |
| 1030 body = body->semanticScope(sc, this, this); | |
| 1031 sc->noctor--; | |
| 1032 condition = condition->semantic(sc); | |
| 1033 condition = resolveProperties(sc, condition); | |
| 1034 condition = condition->optimize(WANTvalue); | |
| 1035 | |
| 1036 condition = condition->checkToBoolean(); | |
| 1037 | |
| 1038 return this; | |
| 1039 } | |
| 1040 | |
| 1041 int DoStatement::hasBreak() | |
| 1042 { | |
| 1043 return TRUE; | |
| 1044 } | |
| 1045 | |
| 1046 int DoStatement::hasContinue() | |
| 1047 { | |
| 1048 return TRUE; | |
| 1049 } | |
| 1050 | |
| 1051 int DoStatement::usesEH() | |
| 1052 { | |
| 1053 return body ? body->usesEH() : 0; | |
| 1054 } | |
| 1055 | |
| 336 | 1056 int DoStatement::blockExit() |
| 1057 { int result; | |
| 1058 | |
| 1059 if (body) | |
| 1060 { result = body->blockExit(); | |
| 1061 if (result == BEbreak) | |
| 1062 return BEfallthru; | |
| 1063 if (result & BEcontinue) | |
| 1064 result |= BEfallthru; | |
| 1065 } | |
| 1066 else | |
| 1067 result = BEfallthru; | |
| 1068 if (result & BEfallthru) | |
| 1069 { if (condition->canThrow()) | |
| 1070 result |= BEthrow; | |
| 1071 if (!(result & BEbreak) && condition->isBool(TRUE)) | |
| 1072 result &= ~BEfallthru; | |
| 1073 } | |
| 1074 result &= ~(BEbreak | BEcontinue); | |
| 1075 return result; | |
| 1076 } | |
| 1077 | |
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1078 |
| 159 | 1079 int DoStatement::comeFrom() |
| 1080 { | |
| 1081 if (body) | |
| 1082 return body->comeFrom(); | |
| 1083 return FALSE; | |
| 1084 } | |
| 1085 | |
| 1086 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1087 { | |
| 1088 buf->writestring("do"); | |
| 1089 buf->writenl(); | |
| 1090 if (body) | |
| 1091 body->toCBuffer(buf, hgs); | |
| 1092 buf->writestring("while ("); | |
| 1093 condition->toCBuffer(buf, hgs); | |
| 1094 buf->writebyte(')'); | |
| 1095 } | |
| 1096 | |
| 1097 /******************************** ForStatement ***************************/ | |
| 1098 | |
| 1099 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
| 1100 : Statement(loc) | |
| 1101 { | |
| 1102 this->init = init; | |
| 1103 this->condition = condition; | |
| 1104 this->increment = increment; | |
| 1105 this->body = body; | |
| 1106 } | |
| 1107 | |
| 1108 Statement *ForStatement::syntaxCopy() | |
| 1109 { | |
| 1110 Statement *i = NULL; | |
| 1111 if (init) | |
| 1112 i = init->syntaxCopy(); | |
| 1113 Expression *c = NULL; | |
| 1114 if (condition) | |
| 1115 c = condition->syntaxCopy(); | |
| 1116 Expression *inc = NULL; | |
| 1117 if (increment) | |
| 1118 inc = increment->syntaxCopy(); | |
| 1119 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
| 1120 return s; | |
| 1121 } | |
| 1122 | |
| 1123 Statement *ForStatement::semantic(Scope *sc) | |
| 1124 { | |
| 1125 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1126 sym->parent = sc->scopesym; | |
| 1127 sc = sc->push(sym); | |
| 1128 if (init) | |
| 1129 init = init->semantic(sc); | |
|
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1130 #if 0 |
| 159 | 1131 if (!condition) |
| 1132 // Use a default value | |
| 1133 condition = new IntegerExp(loc, 1, Type::tboolean); | |
|
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1134 #endif |
| 159 | 1135 sc->noctor++; |
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1136 if (condition) |
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1137 { |
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1138 condition = condition->semantic(sc); |
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1139 condition = resolveProperties(sc, condition); |
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1140 condition = condition->optimize(WANTvalue); |
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1141 condition = condition->checkToBoolean(); |
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1142 } |
| 159 | 1143 if (increment) |
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1144 { increment = increment->semantic(sc); |
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1145 increment = resolveProperties(sc, increment); |
| 1587 | 1146 increment = increment->optimize(0); |
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1147 } |
| 159 | 1148 |
| 1149 sc->sbreak = this; | |
| 1150 sc->scontinue = this; | |
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1151 if (body) |
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1152 body = body->semantic(sc); |
| 159 | 1153 sc->noctor--; |
| 1154 | |
| 1155 sc->pop(); | |
| 1156 return this; | |
| 1157 } | |
| 1158 | |
| 1587 | 1159 void ForStatement::scopeCode(Scope *sc, Statement **sentry, Statement **sexception, Statement **sfinally) |
| 159 | 1160 { |
| 1161 //printf("ForStatement::scopeCode()\n"); | |
| 1162 //print(); | |
| 1163 if (init) | |
| 1587 | 1164 init->scopeCode(sc, sentry, sexception, sfinally); |
| 159 | 1165 else |
| 1587 | 1166 Statement::scopeCode(sc, sentry, sexception, sfinally); |
| 159 | 1167 } |
| 1168 | |
| 1169 int ForStatement::hasBreak() | |
| 1170 { | |
| 1171 //printf("ForStatement::hasBreak()\n"); | |
| 1172 return TRUE; | |
| 1173 } | |
| 1174 | |
| 1175 int ForStatement::hasContinue() | |
| 1176 { | |
| 1177 return TRUE; | |
| 1178 } | |
| 1179 | |
| 1180 int ForStatement::usesEH() | |
| 1181 { | |
| 1182 return (init && init->usesEH()) || body->usesEH(); | |
| 1183 } | |
| 1184 | |
| 336 | 1185 int ForStatement::blockExit() |
| 1186 { int result = BEfallthru; | |
| 1187 | |
| 1188 if (init) | |
| 1189 { result = init->blockExit(); | |
| 1190 if (!(result & BEfallthru)) | |
| 1191 return result; | |
| 1192 } | |
| 1193 if (condition) | |
| 1194 { if (condition->canThrow()) | |
| 1195 result |= BEthrow; | |
| 1587 | 1196 if (condition->isBool(TRUE)) |
| 1197 result &= ~BEfallthru; | |
| 1198 else if (condition->isBool(FALSE)) | |
| 1199 return result; | |
| 336 | 1200 } |
| 1201 else | |
| 1202 result &= ~BEfallthru; // the body must do the exiting | |
| 1203 if (body) | |
| 1204 { int r = body->blockExit(); | |
|
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1205 if (r & (BEbreak | BEgoto)) |
| 336 | 1206 result |= BEfallthru; |
|
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1207 result |= r & ~(BEfallthru | BEbreak | BEcontinue); |
| 336 | 1208 } |
| 1209 if (increment && increment->canThrow()) | |
| 1210 result |= BEthrow; | |
| 1211 return result; | |
| 1212 } | |
| 1213 | |
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1214 |
| 159 | 1215 int ForStatement::comeFrom() |
| 1216 { | |
| 1217 //printf("ForStatement::comeFrom()\n"); | |
| 1218 if (body) | |
| 1219 { int result = body->comeFrom(); | |
| 1220 //printf("result = %d\n", result); | |
| 1221 return result; | |
| 1222 } | |
| 1223 return FALSE; | |
| 1224 } | |
| 1225 | |
| 1226 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1227 { | |
| 1228 buf->writestring("for ("); | |
| 1229 if (init) | |
| 1230 { | |
| 1231 hgs->FLinit.init++; | |
| 1232 init->toCBuffer(buf, hgs); | |
| 1233 hgs->FLinit.init--; | |
| 1234 } | |
| 1235 else | |
| 1236 buf->writebyte(';'); | |
| 1237 if (condition) | |
| 1238 { buf->writebyte(' '); | |
| 1239 condition->toCBuffer(buf, hgs); | |
| 1240 } | |
| 1241 buf->writebyte(';'); | |
| 1242 if (increment) | |
| 1243 { buf->writebyte(' '); | |
| 1244 increment->toCBuffer(buf, hgs); | |
| 1245 } | |
| 1246 buf->writebyte(')'); | |
| 1247 buf->writenl(); | |
| 1248 buf->writebyte('{'); | |
| 1249 buf->writenl(); | |
| 1250 body->toCBuffer(buf, hgs); | |
| 1251 buf->writebyte('}'); | |
| 1252 buf->writenl(); | |
| 1253 } | |
| 1254 | |
| 1255 /******************************** ForeachStatement ***************************/ | |
| 1256 | |
|
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1257 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Parameters *arguments, |
| 159 | 1258 Expression *aggr, Statement *body) |
| 1259 : Statement(loc) | |
| 1260 { | |
| 1261 this->op = op; | |
| 1262 this->arguments = arguments; | |
| 1263 this->aggr = aggr; | |
| 1264 this->body = body; | |
| 1265 | |
| 1266 this->key = NULL; | |
| 1267 this->value = NULL; | |
| 1268 | |
| 1269 this->func = NULL; | |
| 1270 } | |
| 1271 | |
| 1272 Statement *ForeachStatement::syntaxCopy() | |
| 1273 { | |
|
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|
1274 Parameters *args = Parameter::arraySyntaxCopy(arguments); |
| 159 | 1275 Expression *exp = aggr->syntaxCopy(); |
| 1276 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, | |
| 1277 body ? body->syntaxCopy() : NULL); | |
| 1278 return s; | |
| 1279 } | |
| 1280 | |
| 1281 Statement *ForeachStatement::semantic(Scope *sc) | |
| 1282 { | |
| 1283 //printf("ForeachStatement::semantic() %p\n", this); | |
| 1284 ScopeDsymbol *sym; | |
| 1285 Statement *s = this; | |
|
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1286 size_t dim = arguments->dim; |
| 159 | 1287 TypeAArray *taa = NULL; |
| 1288 | |
| 1289 Type *tn = NULL; | |
| 1290 Type *tnv = NULL; | |
| 1291 | |
| 1292 func = sc->func; | |
| 1293 if (func->fes) | |
| 1294 func = func->fes->func; | |
| 1295 | |
| 1296 aggr = aggr->semantic(sc); | |
| 1297 aggr = resolveProperties(sc, aggr); | |
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1298 aggr = aggr->optimize(WANTvalue); |
| 159 | 1299 if (!aggr->type) |
| 1300 { | |
| 1301 error("invalid foreach aggregate %s", aggr->toChars()); | |
| 1302 return this; | |
| 1303 } | |
| 1304 | |
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1305 inferApplyArgTypes(op, arguments, aggr, sc->module); |
| 159 | 1306 |
| 1307 /* Check for inference errors | |
| 1308 */ | |
| 1309 if (dim != arguments->dim) | |
| 1310 { | |
| 1311 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
| 1312 error("cannot uniquely infer foreach argument types"); | |
| 1313 return this; | |
| 1314 } | |
| 1315 | |
| 1316 Type *tab = aggr->type->toBasetype(); | |
| 1317 | |
| 1318 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
| 1319 { | |
| 1320 if (dim < 1 || dim > 2) | |
| 1321 { | |
| 1322 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
| 1323 return s; | |
| 1324 } | |
| 1325 | |
| 1326 TypeTuple *tuple = (TypeTuple *)tab; | |
| 1327 Statements *statements = new Statements(); | |
| 1328 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
| 1329 size_t n; | |
| 1330 TupleExp *te = NULL; | |
| 1331 if (aggr->op == TOKtuple) // expression tuple | |
| 1332 { te = (TupleExp *)aggr; | |
| 1333 n = te->exps->dim; | |
| 1334 } | |
| 1335 else if (aggr->op == TOKtype) // type tuple | |
| 1336 { | |
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1337 n = Parameter::dim(tuple->arguments); |
| 159 | 1338 } |
| 1339 else | |
| 1340 assert(0); | |
| 1341 for (size_t j = 0; j < n; j++) | |
| 1342 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
| 1343 Expression *e; | |
| 1344 Type *t; | |
| 1345 if (te) | |
| 1346 e = (Expression *)te->exps->data[k]; | |
| 1347 else | |
|
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|
1348 t = Parameter::getNth(tuple->arguments, k)->type; |
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1349 Parameter *arg = (Parameter *)arguments->data[0]; |
| 159 | 1350 Statements *st = new Statements(); |
| 1351 | |
| 1352 if (dim == 2) | |
| 1353 { // Declare key | |
| 1354 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1355 error("no storage class for key %s", arg->ident->toChars()); | |
| 1356 TY keyty = arg->type->ty; | |
|
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1357 if (keyty != Tint32 && keyty != Tuns32) |
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1358 { |
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|
1359 if (global.params.is64bit) |
|
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|
1360 { |
|
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|
1361 if (keyty != Tint64 && keyty != Tuns64) |
|
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Merged DMD 1.042.
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diff
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|
1362 error("foreach: key type must be int or uint, long or ulong, not %s", arg->type->toChars()); |
|
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Merged DMD 1.042.
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|
1363 } |
|
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Merged DMD 1.042.
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diff
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|
1364 else |
|
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Merged DMD 1.042.
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diff
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|
1365 error("foreach: key type must be int or uint, not %s", arg->type->toChars()); |
|
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Merged DMD 1.042.
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|
1366 } |
| 159 | 1367 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); |
| 1368 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1369 var->storage_class |= STCconst; | |
| 1370 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1371 st->push(new ExpStatement(loc, de)); | |
|
1607
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Merge DMD r253: refactor: Argument => Parameter
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diff
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|
1372 arg = (Parameter *)arguments->data[1]; // value |
| 159 | 1373 } |
| 1374 // Declare value | |
| 1375 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1376 error("no storage class for value %s", arg->ident->toChars()); | |
| 1377 Dsymbol *var; | |
| 1378 if (te) | |
| 1587 | 1379 { Type *tb = e->type->toBasetype(); |
| 1380 if ((tb->ty == Tfunction || tb->ty == Tsarray) && e->op == TOKvar) | |
| 159 | 1381 { VarExp *ve = (VarExp *)e; |
| 1382 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
| 1383 } | |
| 1384 else | |
| 1385 { | |
| 1386 arg->type = e->type; | |
| 1387 Initializer *ie = new ExpInitializer(0, e); | |
| 1388 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1389 if (e->isConst()) | |
| 1390 v->storage_class |= STCconst; | |
| 1391 var = v; | |
| 1392 } | |
| 1393 } | |
| 1394 else | |
| 1395 { | |
| 1396 var = new AliasDeclaration(loc, arg->ident, t); | |
| 1397 } | |
| 1398 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1399 st->push(new ExpStatement(loc, de)); | |
| 1400 | |
| 1401 st->push(body->syntaxCopy()); | |
| 1402 s = new CompoundStatement(loc, st); | |
| 1403 s = new ScopeStatement(loc, s); | |
| 1404 statements->push(s); | |
| 1405 } | |
| 1406 | |
| 1407 s = new UnrolledLoopStatement(loc, statements); | |
| 1408 s = s->semantic(sc); | |
| 1409 return s; | |
| 1410 } | |
| 1411 | |
|
846
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1412 for (size_t i = 0; i < dim; i++) |
|
1607
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
1413 { Parameter *arg = (Parameter *)arguments->data[i]; |
| 159 | 1414 if (!arg->type) |
| 1415 { | |
| 1416 error("cannot infer type for %s", arg->ident->toChars()); | |
| 1417 return this; | |
| 1418 } | |
| 1419 } | |
| 1420 | |
| 1421 sym = new ScopeDsymbol(); | |
| 1422 sym->parent = sc->scopesym; | |
| 1423 sc = sc->push(sym); | |
| 1424 | |
| 1425 sc->noctor++; | |
| 1426 | |
| 1427 switch (tab->ty) | |
| 1428 { | |
| 1429 case Tarray: | |
| 1430 case Tsarray: | |
| 1431 if (dim < 1 || dim > 2) | |
| 1432 { | |
| 1433 error("only one or two arguments for array foreach"); | |
| 1434 break; | |
| 1435 } | |
| 1436 | |
| 1437 /* Look for special case of parsing char types out of char type | |
| 1438 * array. | |
| 1439 */ | |
| 1440 tn = tab->nextOf()->toBasetype(); | |
| 1441 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) | |
|
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Merge DMD r253: refactor: Argument => Parameter
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diff
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|
1442 { Parameter *arg; |
| 159 | 1443 |
|
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Merged DMD 1.037 frontend
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diff
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|
1444 int i = (dim == 1) ? 0 : 1; // index of value |
|
1607
207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
1445 arg = (Parameter *)arguments->data[i]; |
| 159 | 1446 arg->type = arg->type->semantic(loc, sc); |
| 1447 tnv = arg->type->toBasetype(); | |
| 1448 if (tnv->ty != tn->ty && | |
| 1449 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
| 1450 { | |
| 1451 if (arg->storageClass & STCref) | |
| 1452 error("foreach: value of UTF conversion cannot be ref"); | |
| 1453 if (dim == 2) | |
|
1607
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Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
1454 { arg = (Parameter *)arguments->data[0]; |
| 159 | 1455 if (arg->storageClass & STCref) |
| 1456 error("foreach: key cannot be ref"); | |
| 1457 } | |
| 1458 goto Lapply; | |
| 1459 } | |
| 1460 } | |
| 1461 | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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794
diff
changeset
|
1462 for (size_t i = 0; i < dim; i++) |
| 159 | 1463 { // Declare args |
|
1607
207a8a438dea
Merge DMD r253: refactor: Argument => Parameter
Leandro Lucarella <llucax@gmail.com>
parents:
1587
diff
changeset
|
1464 Parameter *arg = (Parameter *)arguments->data[i]; |
| 1587 | 1465 Type *argtype = arg->type->semantic(loc, sc); |
| 159 | 1466 VarDeclaration *var; |
| 1467 | |
| 1587 | 1468 var = new VarDeclaration(loc, argtype, arg->ident, NULL); |
| 159 | 1469 var->storage_class |= STCforeach; |
| 1470 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
| 1587 | 1471 |
| 159 | 1472 if (dim == 2 && i == 0) |
| 1473 key = var; | |
| 1474 else | |
| 1475 value = var; | |
| 1587 | 1476 #if 0 |
| 1477 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1478 de->semantic(sc); | |
| 1479 #endif | |
| 159 | 1480 } |
| 1481 | |
| 1587 | 1482 #if 1 |
| 1483 { | |
| 1484 /* Convert to a ForStatement | |
| 1485 * foreach (key, value; a) body => | |
| 1486 * for (T[] tmp = a[], size_t key; key < tmp.length; ++key) | |
| 1487 * { T value = tmp[k]; body } | |
| 1488 * | |
| 1489 * foreach_reverse (key, value; a) body => | |
| 1490 * for (T[] tmp = a[], size_t key = tmp.length; key--; ) | |
| 1491 * { T value = tmp[k]; body } | |
| 1492 */ | |
| 1493 Identifier *id = Lexer::uniqueId("__aggr"); | |
| 1494 ExpInitializer *ie = new ExpInitializer(loc, new SliceExp(loc, aggr, NULL, NULL)); | |
| 1495 VarDeclaration *tmp = new VarDeclaration(loc, aggr->type->nextOf()->arrayOf(), id, ie); | |
| 1496 | |
| 1497 Expression *tmp_length = new DotIdExp(loc, new VarExp(loc, tmp), Id::length); | |
| 1498 | |
| 1499 if (!key) | |
| 1500 { | |
| 1501 Identifier *id = Lexer::uniqueId("__key"); | |
| 1502 key = new VarDeclaration(loc, Type::tsize_t, id, NULL); | |
| 1503 } | |
| 1504 if (op == TOKforeach_reverse) | |
| 1505 key->init = new ExpInitializer(loc, tmp_length); | |
| 1506 else | |
| 1507 key->init = new ExpInitializer(loc, new IntegerExp(0)); | |
| 1508 | |
| 1509 Statements *cs = new Statements(); | |
| 1510 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 1511 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, key))); | |
| 1512 Statement *forinit = new CompoundDeclarationStatement(loc, cs); | |
| 1513 | |
| 1514 Expression *cond; | |
| 1515 if (op == TOKforeach_reverse) | |
| 1516 // key-- | |
| 1517 cond = new PostExp(TOKminusminus, loc, new VarExp(loc, key)); | |
| 1518 else | |
| 1519 // key < tmp.length | |
| 1520 cond = new CmpExp(TOKlt, loc, new VarExp(loc, key), tmp_length); | |
| 1521 | |
| 1522 Expression *increment = NULL; | |
| 1523 if (op == TOKforeach) | |
| 1524 // key += 1 | |
| 1525 increment = new AddAssignExp(loc, new VarExp(loc, key), new IntegerExp(1)); | |
| 1526 | |
| 1527 // T value = tmp[key]; | |
| 1528 value->init = new ExpInitializer(loc, new IndexExp(loc, new VarExp(loc, tmp), new VarExp(loc, key))); | |
| 1529 Statement *ds = new DeclarationStatement(loc, new DeclarationExp(loc, value)); | |
| 1530 | |
| 1531 body = new CompoundStatement(loc, ds, body); | |
| 1532 | |
| 1533 ForStatement *fs = new ForStatement(loc, forinit, cond, increment, body); | |
| 1534 s = fs->semantic(sc); | |
| 1535 break; | |
| 1536 } | |
| 1537 #else | |
| 159 | 1538 if (!value->type->equals(tab->next)) |
| 1539 { | |
| 1540 if (aggr->op == TOKstring) | |
| 1541 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
| 1542 else | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1543 error("foreach: %s is not an array of %s", |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1544 tab->toChars(), value->type->toChars()); |
| 159 | 1545 } |
| 1546 | |
| 1587 | 1547 if (key) |
|
1195
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Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
1548 { |
| 1587 | 1549 if (key->type->ty != Tint32 && key->type->ty != Tuns32) |
|
1195
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Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1550 { |
| 1587 | 1551 if (global.params.is64bit) |
| 1552 { | |
| 1553 if (key->type->ty != Tint64 && key->type->ty != Tuns64) | |
| 1554 error("foreach: key type must be int or uint, long or ulong, not %s", key->type->toChars()); | |
| 1555 } | |
| 1556 else | |
| 1557 error("foreach: key type must be int or uint, not %s", key->type->toChars()); | |
|
1195
e961851fb8be
Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1558 } |
| 1587 | 1559 |
| 1560 if (key->storage_class & (STCout | STCref)) | |
| 1561 error("foreach: key cannot be out or ref"); | |
|
1195
e961851fb8be
Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
1562 } |
| 159 | 1563 |
| 1587 | 1564 sc->sbreak = this; |
| 1565 sc->scontinue = this; | |
| 1566 body = body->semantic(sc); | |
| 159 | 1567 break; |
| 1587 | 1568 #endif |
| 159 | 1569 |
| 1570 case Taarray: | |
| 1571 taa = (TypeAArray *)tab; | |
| 1572 if (dim < 1 || dim > 2) | |
| 1573 { | |
| 1574 error("only one or two arguments for associative array foreach"); | |
| 1575 break; | |
| 1576 } | |
| 1577 if (op == TOKforeach_reverse) | |
| 1578 { | |
| 1579 error("no reverse iteration on associative arrays"); | |
| 1580 } | |
| 1581 goto Lapply; | |
| 1582 | |
| 1583 case Tclass: | |
| 1584 case Tstruct: | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1585 #if DMDV2 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1586 { /* Look for range iteration, i.e. the properties |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1587 * .empty, .next, .retreat, .head and .rear |
| 1587 | 1588 * foreach (e; aggr) { ... } |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1589 * translates to: |
| 1587 | 1590 * for (auto __r = aggr[]; !__r.empty; __r.next) |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1591 * { auto e = __r.head; |
|
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1592 * ... |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1593 * } |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1594 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1595 if (dim != 1) // only one argument allowed with ranges |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1596 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1597 AggregateDeclaration *ad = (tab->ty == Tclass) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1598 ? (AggregateDeclaration *)((TypeClass *)tab)->sym |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1599 : (AggregateDeclaration *)((TypeStruct *)tab)->sym; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1600 Identifier *idhead; |
|
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1601 Identifier *idnext; |
|
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1602 if (op == TOKforeach) |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1603 { idhead = Id::Fhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1604 idnext = Id::Fnext; |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1605 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff
changeset
|
1606 else |
| 1587 | 1607 { idhead = Id::Ftoe; |
|
846
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1608 idnext = Id::Fretreat; |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1609 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
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diff
changeset
|
1610 Dsymbol *shead = search_function(ad, idhead); |
|
bc982f1ad106
Merged DMD 1.037 frontend
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diff
changeset
|
1611 if (!shead) |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1612 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1613 |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1614 /* Generate a temporary __r and initialize it with the aggregate. |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1615 */ |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1616 Identifier *id = Identifier::generateId("__r"); |
| 1587 | 1617 Expression *rinit = new SliceExp(loc, aggr, NULL, NULL); |
| 1618 rinit = rinit->trySemantic(sc); | |
| 1619 if (!rinit) // if application of [] failed | |
| 1620 rinit = aggr; | |
| 1621 VarDeclaration *r = new VarDeclaration(loc, NULL, id, new ExpInitializer(loc, rinit)); | |
| 1622 // r->semantic(sc); | |
| 1623 //printf("r: %s, init: %s\n", r->toChars(), r->init->toChars()); | |
|
846
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1624 Statement *init = new DeclarationStatement(loc, r); |
| 1587 | 1625 //printf("init: %s\n", init->toChars()); |
|
846
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1626 |
|
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parents:
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diff
changeset
|
1627 // !__r.empty |
|
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1628 Expression *e = new VarExp(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1629 e = new DotIdExp(loc, e, Id::Fempty); |
|
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parents:
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diff
changeset
|
1630 Expression *condition = new NotExp(loc, e); |
|
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Merged DMD 1.037 frontend
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diff
changeset
|
1631 |
|
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diff
changeset
|
1632 // __r.next |
|
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changeset
|
1633 e = new VarExp(loc, r); |
|
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Merged DMD 1.037 frontend
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parents:
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diff
changeset
|
1634 Expression *increment = new DotIdExp(loc, e, idnext); |
|
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Merged DMD 1.037 frontend
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changeset
|
1635 |
|
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parents:
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diff
changeset
|
1636 /* Declaration statement for e: |
|
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1637 * auto e = __r.idhead; |
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1638 */ |
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1639 e = new VarExp(loc, r); |
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1640 Expression *einit = new DotIdExp(loc, e, idhead); |
| 1587 | 1641 // einit = einit->semantic(sc); |
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1642 Parameter *arg = (Parameter *)arguments->data[0]; |
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1643 VarDeclaration *ve = new VarDeclaration(loc, arg->type, arg->ident, new ExpInitializer(loc, einit)); |
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1644 ve->storage_class |= STCforeach; |
| 1587 | 1645 ve->storage_class |= arg->storageClass & (STCin | STCout | STCref | STC_TYPECTOR); |
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1646 |
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1647 DeclarationExp *de = new DeclarationExp(loc, ve); |
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1648 |
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1649 Statement *body = new CompoundStatement(loc, |
|
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1650 new DeclarationStatement(loc, de), this->body); |
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1651 |
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|
1652 s = new ForStatement(loc, init, condition, increment, body); |
| 1587 | 1653 #if 0 |
| 1654 printf("init: %s\n", init->toChars()); | |
| 1655 printf("condition: %s\n", condition->toChars()); | |
| 1656 printf("increment: %s\n", increment->toChars()); | |
| 1657 printf("body: %s\n", body->toChars()); | |
| 1658 #endif | |
|
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1659 s = s->semantic(sc); |
|
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1660 break; |
|
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1661 } |
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1662 #endif |
| 159 | 1663 case Tdelegate: |
| 1664 Lapply: | |
| 1665 { FuncDeclaration *fdapply; | |
|
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1666 Parameters *args; |
| 159 | 1667 Expression *ec; |
| 1668 Expression *e; | |
| 1669 FuncLiteralDeclaration *fld; | |
|
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1670 Parameter *a; |
| 159 | 1671 Type *t; |
| 1672 Expression *flde; | |
| 1673 Identifier *id; | |
| 1674 Type *tret; | |
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1675 TypeDelegate* dgty; |
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1676 TypeDelegate* dgty2; |
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1677 TypeDelegate* fldeTy; |
| 159 | 1678 |
| 1679 tret = func->type->nextOf(); | |
| 1680 | |
| 1681 // Need a variable to hold value from any return statements in body. | |
| 1682 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1683 { VarDeclaration *v; | |
| 1684 | |
| 1685 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
|
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1686 v->noscope = 1; |
| 159 | 1687 v->semantic(sc); |
| 1688 if (!sc->insert(v)) | |
| 1689 assert(0); | |
| 1690 v->parent = sc->func; | |
| 1691 sc->func->vresult = v; | |
| 1692 } | |
| 1693 | |
| 1694 /* Turn body into the function literal: | |
| 1695 * int delegate(ref T arg) { body } | |
| 1696 */ | |
|
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1697 args = new Parameters(); |
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1698 for (size_t i = 0; i < dim; i++) |
|
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1699 { Parameter *arg = (Parameter *)arguments->data[i]; |
| 159 | 1700 |
| 1701 arg->type = arg->type->semantic(loc, sc); | |
| 1702 if (arg->storageClass & STCref) | |
| 1703 id = arg->ident; | |
| 1704 else | |
| 1705 { // Make a copy of the ref argument so it isn't | |
| 1706 // a reference. | |
| 1707 VarDeclaration *v; | |
| 1708 Initializer *ie; | |
|
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1709 |
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1710 id = Lexer::uniqueId("__applyArg", i); |
| 159 | 1711 |
| 1712 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1713 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1714 s = new DeclarationStatement(0, v); | |
| 1715 body = new CompoundStatement(loc, s, body); | |
| 1716 } | |
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1717 a = new Parameter(STCref, arg->type, id, NULL); |
| 159 | 1718 args->push(a); |
| 1719 } | |
| 1720 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1721 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1722 fld->fbody = body; | |
| 1723 flde = new FuncExp(loc, fld); | |
| 1724 flde = flde->semantic(sc); | |
| 1725 | |
| 1726 // Resolve any forward referenced goto's | |
| 1727 for (int i = 0; i < gotos.dim; i++) | |
| 1728 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1729 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1730 | |
| 1731 if (!gs->label->statement) | |
| 1732 { // 'Promote' it to this scope, and replace with a return | |
| 1733 cases.push(gs); | |
| 1734 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1735 cs->statements->data[0] = (void *)s; | |
| 1736 } | |
| 1737 } | |
| 1738 | |
| 1739 if (tab->ty == Taarray) | |
| 1740 { | |
| 1741 // Check types | |
|
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1742 Parameter *arg = (Parameter *)arguments->data[0]; |
| 159 | 1743 if (dim == 2) |
| 1744 { | |
| 1745 if (arg->storageClass & STCref) | |
| 1746 error("foreach: index cannot be ref"); | |
| 1747 if (!arg->type->equals(taa->index)) | |
| 1748 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
|
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1749 arg = (Parameter *)arguments->data[1]; |
| 159 | 1750 } |
| 1751 if (!arg->type->equals(taa->nextOf())) | |
| 1752 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1753 | |
| 1754 /* Call: | |
| 1755 * _aaApply(aggr, keysize, flde) | |
| 1756 */ | |
|
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1757 //LDC: Build arguments. |
|
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1758 static FuncDeclaration *aaApply2_fd = NULL; |
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1759 static TypeDelegate* aaApply2_dg; |
|
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1760 if(!aaApply2_fd) { |
|
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1761 Parameters* args = new Parameters; |
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1762 args->push(new Parameter(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
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1763 args->push(new Parameter(STCin, Type::tsize_t, NULL, NULL)); |
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1764 Parameters* dgargs = new Parameters; |
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1765 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1766 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1767 aaApply2_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
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1768 args->push(new Parameter(STCin, aaApply2_dg, NULL, NULL)); |
|
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1769 aaApply2_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply2"); |
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1770 } |
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1771 static FuncDeclaration *aaApply_fd = NULL; |
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1772 static TypeDelegate* aaApply_dg; |
|
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1773 if(!aaApply_fd) { |
|
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1774 Parameters* args = new Parameters; |
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1775 args->push(new Parameter(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
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1776 args->push(new Parameter(STCin, Type::tsize_t, NULL, NULL)); |
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1777 Parameters* dgargs = new Parameters; |
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1778 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
|
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1779 aaApply_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
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1780 args->push(new Parameter(STCin, aaApply_dg, NULL, NULL)); |
|
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1781 aaApply_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply"); |
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1782 } |
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1783 if (dim == 2) { |
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1784 fdapply = aaApply2_fd; |
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1785 fldeTy = aaApply2_dg; |
|
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1786 } else { |
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1787 fdapply = aaApply_fd; |
|
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1788 fldeTy = aaApply_dg; |
|
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1789 } |
| 159 | 1790 ec = new VarExp(0, fdapply); |
| 1791 Expressions *exps = new Expressions(); | |
| 1792 exps->push(aggr); | |
| 1793 size_t keysize = taa->key->size(); | |
|
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|
1794 keysize = (keysize + (PTRSIZE-1)) & ~(PTRSIZE-1); |
| 159 | 1795 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); |
|
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1796 |
|
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|
1797 // LDC paint delegate argument to the type runtime expects |
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1798 if (!fldeTy->equals(flde->type)) |
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1799 { |
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1800 flde = new CastExp(loc, flde, flde->type); |
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1801 flde->type = fldeTy; |
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1802 } |
| 159 | 1803 exps->push(flde); |
| 1804 e = new CallExp(loc, ec, exps); | |
| 1805 e->type = Type::tindex; // don't run semantic() on e | |
| 1806 } | |
| 1807 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1808 { | |
| 1809 /* Call: | |
| 1810 * _aApply(aggr, flde) | |
| 1811 */ | |
| 1812 static char fntab[9][3] = | |
| 1813 { "cc","cw","cd", | |
| 1814 "wc","cc","wd", | |
| 1815 "dc","dw","dd" | |
| 1816 }; | |
| 1817 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1818 int flag; | |
| 1819 | |
| 1820 switch (tn->ty) | |
| 1821 { | |
| 1822 case Tchar: flag = 0; break; | |
| 1823 case Twchar: flag = 3; break; | |
| 1824 case Tdchar: flag = 6; break; | |
| 1825 default: assert(0); | |
| 1826 } | |
| 1827 switch (tnv->ty) | |
| 1828 { | |
| 1829 case Tchar: flag += 0; break; | |
| 1830 case Twchar: flag += 1; break; | |
| 1831 case Tdchar: flag += 2; break; | |
| 1832 default: assert(0); | |
| 1833 } | |
| 1834 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
|
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|
1835 #ifdef __MINGW32__ |
|
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|
1836 int j = sprintf(fdname, "_aApply%s%.*s%lu", r, 2, fntab[flag], dim); |
|
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|
1837 #else |
|
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|
1838 int j = sprintf(fdname, "_aApply%s%.*s%zu", r, 2, fntab[flag], dim); |
|
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|
1839 #endif |
| 159 | 1840 assert(j < sizeof(fdname)); |
|
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|
1841 //LDC: Build arguments. |
|
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1842 Parameters* args = new Parameters; |
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1843 args->push(new Parameter(STCin, tn->arrayOf(), NULL, NULL)); |
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1844 if (dim == 2) { |
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1845 Parameters* dgargs = new Parameters; |
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1846 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1847 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1848 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1849 args->push(new Parameter(STCin, dgty, NULL, NULL)); |
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1850 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1851 } else { |
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1852 Parameters* dgargs = new Parameters; |
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1853 dgargs->push(new Parameter(STCin, Type::tvoidptr, NULL, NULL)); |
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1854 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
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1855 args->push(new Parameter(STCin, dgty, NULL, NULL)); |
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1856 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
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1857 } |
| 159 | 1858 |
| 1859 ec = new VarExp(0, fdapply); | |
| 1860 Expressions *exps = new Expressions(); | |
| 1861 if (tab->ty == Tsarray) | |
| 1862 aggr = aggr->castTo(sc, tn->arrayOf()); | |
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1863 exps->push(aggr); |
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1864 |
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1865 // LDC paint delegate argument to the type runtime expects |
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1866 if (!dgty->equals(flde->type)) |
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1867 { |
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1868 flde = new CastExp(loc, flde, flde->type); |
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1869 flde->type = dgty; |
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1870 } |
| 159 | 1871 exps->push(flde); |
| 1872 e = new CallExp(loc, ec, exps); | |
| 1873 e->type = Type::tindex; // don't run semantic() on e | |
| 1874 } | |
| 1875 else if (tab->ty == Tdelegate) | |
| 1876 { | |
| 1877 /* Call: | |
| 1878 * aggr(flde) | |
| 1879 */ | |
| 1880 Expressions *exps = new Expressions(); | |
| 1881 exps->push(flde); | |
| 1882 e = new CallExp(loc, aggr, exps); | |
| 1883 e = e->semantic(sc); | |
| 1884 if (e->type != Type::tint32) | |
| 1885 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1886 } | |
| 1887 else | |
| 1888 { | |
| 1889 /* Call: | |
| 1890 * aggr.apply(flde) | |
| 1891 */ | |
| 1892 ec = new DotIdExp(loc, aggr, | |
| 1893 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1894 : Id::apply); | |
| 1895 Expressions *exps = new Expressions(); | |
| 1896 exps->push(flde); | |
| 1897 e = new CallExp(loc, ec, exps); | |
| 1898 e = e->semantic(sc); | |
| 1899 if (e->type != Type::tint32) | |
| 1900 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1901 } | |
| 1902 | |
| 1903 if (!cases.dim) | |
| 1904 // Easy case, a clean exit from the loop | |
| 1905 s = new ExpStatement(loc, e); | |
| 1906 else | |
| 1907 { // Construct a switch statement around the return value | |
| 1908 // of the apply function. | |
| 1909 Statements *a = new Statements(); | |
| 1910 | |
| 1911 // default: break; takes care of cases 0 and 1 | |
| 1912 s = new BreakStatement(0, NULL); | |
| 1913 s = new DefaultStatement(0, s); | |
| 1914 a->push(s); | |
| 1915 | |
| 1916 // cases 2... | |
| 1917 for (int i = 0; i < cases.dim; i++) | |
| 1918 { | |
| 1919 s = (Statement *)cases.data[i]; | |
| 1920 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1921 a->push(s); | |
| 1922 } | |
| 1923 | |
| 1924 s = new CompoundStatement(loc, a); | |
| 1925 s = new SwitchStatement(loc, e, s); | |
| 1926 s = s->semantic(sc); | |
| 1927 } | |
| 1928 break; | |
| 1929 } | |
| 1930 | |
| 1931 default: | |
| 1932 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1587 | 1933 s = NULL; // error recovery |
| 159 | 1934 break; |
| 1935 } | |
| 1936 sc->noctor--; | |
| 1937 sc->pop(); | |
| 1938 return s; | |
| 1939 } | |
| 1940 | |
| 1941 int ForeachStatement::hasBreak() | |
| 1942 { | |
| 1943 return TRUE; | |
| 1944 } | |
| 1945 | |
| 1946 int ForeachStatement::hasContinue() | |
| 1947 { | |
| 1948 return TRUE; | |
| 1949 } | |
| 1950 | |
| 1951 int ForeachStatement::usesEH() | |
| 1952 { | |
| 1953 return body->usesEH(); | |
| 1954 } | |
| 1955 | |
| 336 | 1956 int ForeachStatement::blockExit() |
| 1957 { int result = BEfallthru; | |
| 1958 | |
| 1959 if (aggr->canThrow()) | |
| 1960 result |= BEthrow; | |
| 1961 | |
| 1962 if (body) | |
| 1963 { | |
| 1964 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 1965 } | |
| 1966 return result; | |
| 1967 } | |
| 1968 | |
| 1587 | 1969 |
| 159 | 1970 int ForeachStatement::comeFrom() |
| 1971 { | |
| 1972 if (body) | |
| 1973 return body->comeFrom(); | |
| 1974 return FALSE; | |
| 1975 } | |
| 1976 | |
| 1977 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1978 { | |
| 1979 buf->writestring(Token::toChars(op)); | |
| 1980 buf->writestring(" ("); | |
| 1981 for (int i = 0; i < arguments->dim; i++) | |
| 1982 { | |
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1983 Parameter *a = (Parameter *)arguments->data[i]; |
| 159 | 1984 if (i) |
| 1985 buf->writestring(", "); | |
| 1986 if (a->storageClass & STCref) | |
| 1987 buf->writestring((global.params.Dversion == 1) | |
| 1988 ? (char*)"inout " : (char*)"ref "); | |
| 1989 if (a->type) | |
| 1990 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1991 else | |
| 1992 buf->writestring(a->ident->toChars()); | |
| 1993 } | |
| 1994 buf->writestring("; "); | |
| 1995 aggr->toCBuffer(buf, hgs); | |
| 1996 buf->writebyte(')'); | |
| 1997 buf->writenl(); | |
| 1998 buf->writebyte('{'); | |
| 1999 buf->writenl(); | |
| 2000 if (body) | |
| 2001 body->toCBuffer(buf, hgs); | |
| 2002 buf->writebyte('}'); | |
| 2003 buf->writenl(); | |
| 2004 } | |
| 2005 | |
| 1587 | 2006 /**************************** ForeachRangeStatement ***************************/ |
| 2007 | |
| 2008 #if DMDV2 | |
| 2009 | |
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2010 ForeachRangeStatement::ForeachRangeStatement(Loc loc, enum TOK op, Parameter *arg, |
| 1587 | 2011 Expression *lwr, Expression *upr, Statement *body) |
| 2012 : Statement(loc) | |
| 2013 { | |
| 2014 this->op = op; | |
| 2015 this->arg = arg; | |
| 2016 this->lwr = lwr; | |
| 2017 this->upr = upr; | |
| 2018 this->body = body; | |
| 2019 | |
| 2020 this->key = NULL; | |
| 2021 } | |
| 2022 | |
| 2023 Statement *ForeachRangeStatement::syntaxCopy() | |
| 2024 { | |
| 2025 ForeachRangeStatement *s = new ForeachRangeStatement(loc, op, | |
| 2026 arg->syntaxCopy(), | |
| 2027 lwr->syntaxCopy(), | |
| 2028 upr->syntaxCopy(), | |
| 2029 body ? body->syntaxCopy() : NULL); | |
| 2030 return s; | |
| 2031 } | |
| 2032 | |
| 2033 Statement *ForeachRangeStatement::semantic(Scope *sc) | |
| 2034 { | |
| 2035 //printf("ForeachRangeStatement::semantic() %p\n", this); | |
| 2036 ScopeDsymbol *sym; | |
| 2037 Statement *s = this; | |
| 2038 | |
| 2039 lwr = lwr->semantic(sc); | |
| 2040 lwr = resolveProperties(sc, lwr); | |
| 2041 lwr = lwr->optimize(WANTvalue); | |
| 2042 if (!lwr->type) | |
| 2043 { | |
| 2044 error("invalid range lower bound %s", lwr->toChars()); | |
| 2045 return this; | |
| 2046 } | |
| 2047 | |
| 2048 upr = upr->semantic(sc); | |
| 2049 upr = resolveProperties(sc, upr); | |
| 2050 upr = upr->optimize(WANTvalue); | |
| 2051 if (!upr->type) | |
| 2052 { | |
| 2053 error("invalid range upper bound %s", upr->toChars()); | |
| 2054 return this; | |
| 2055 } | |
| 2056 | |
| 2057 if (arg->type) | |
| 2058 { | |
| 2059 arg->type = arg->type->semantic(loc, sc); | |
| 2060 lwr = lwr->implicitCastTo(sc, arg->type); | |
| 2061 upr = upr->implicitCastTo(sc, arg->type); | |
| 2062 } | |
| 2063 else | |
| 2064 { | |
| 2065 /* Must infer types from lwr and upr | |
| 2066 */ | |
| 2067 AddExp ea(loc, lwr, upr); | |
| 2068 ea.typeCombine(sc); | |
| 2069 arg->type = ea.type->mutableOf(); | |
| 2070 lwr = ea.e1; | |
| 2071 upr = ea.e2; | |
| 2072 } | |
| 2073 #if 1 | |
| 2074 /* Convert to a for loop: | |
| 2075 * foreach (key; lwr .. upr) => | |
| 2076 * for (auto key = lwr, auto tmp = upr; key < tmp; ++key) | |
| 2077 * | |
| 2078 * foreach_reverse (key; lwr .. upr) => | |
| 2079 * for (auto tmp = lwr, auto key = upr; key-- > tmp;) | |
| 2080 */ | |
| 2081 | |
| 2082 ExpInitializer *ie = new ExpInitializer(loc, (op == TOKforeach) ? lwr : upr); | |
| 2083 key = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 2084 | |
| 2085 Identifier *id = Lexer::uniqueId("__limit"); | |
| 2086 ie = new ExpInitializer(loc, (op == TOKforeach) ? upr : lwr); | |
| 2087 VarDeclaration *tmp = new VarDeclaration(loc, arg->type, id, ie); | |
| 2088 | |
| 2089 Statements *cs = new Statements(); | |
| 2090 // Keep order of evaluation as lwr, then upr | |
| 2091 if (op == TOKforeach) | |
| 2092 { | |
| 2093 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, key))); | |
| 2094 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 2095 } | |
| 2096 else | |
| 2097 { | |
| 2098 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 2099 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, key))); | |
| 2100 } | |
| 2101 Statement *forinit = new CompoundDeclarationStatement(loc, cs); | |
| 2102 | |
| 2103 Expression *cond; | |
| 2104 if (op == TOKforeach_reverse) | |
| 2105 { // key-- > tmp | |
| 2106 cond = new PostExp(TOKminusminus, loc, new VarExp(loc, key)); | |
| 2107 cond = new CmpExp(TOKgt, loc, cond, new VarExp(loc, tmp)); | |
| 2108 } | |
| 2109 else | |
| 2110 // key < tmp | |
| 2111 cond = new CmpExp(TOKlt, loc, new VarExp(loc, key), new VarExp(loc, tmp)); | |
| 2112 | |
| 2113 Expression *increment = NULL; | |
| 2114 if (op == TOKforeach) | |
| 2115 // key += 1 | |
| 2116 increment = new AddAssignExp(loc, new VarExp(loc, key), new IntegerExp(1)); | |
| 2117 | |
| 2118 ForStatement *fs = new ForStatement(loc, forinit, cond, increment, body); | |
| 2119 s = fs->semantic(sc); | |
| 2120 return s; | |
| 2121 #else | |
| 2122 if (!arg->type->isscalar()) | |
| 2123 error("%s is not a scalar type", arg->type->toChars()); | |
| 2124 | |
| 2125 sym = new ScopeDsymbol(); | |
| 2126 sym->parent = sc->scopesym; | |
| 2127 sc = sc->push(sym); | |
| 2128 | |
| 2129 sc->noctor++; | |
| 2130 | |
| 2131 key = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
| 2132 DeclarationExp *de = new DeclarationExp(loc, key); | |
| 2133 de->semantic(sc); | |
| 2134 | |
| 2135 if (key->storage_class) | |
| 2136 error("foreach range: key cannot have storage class"); | |
| 2137 | |
| 2138 sc->sbreak = this; | |
| 2139 sc->scontinue = this; | |
| 2140 body = body->semantic(sc); | |
| 2141 | |
| 2142 sc->noctor--; | |
| 2143 sc->pop(); | |
| 2144 return s; | |
| 2145 #endif | |
| 2146 } | |
| 2147 | |
| 2148 int ForeachRangeStatement::hasBreak() | |
| 2149 { | |
| 2150 return TRUE; | |
| 2151 } | |
| 2152 | |
| 2153 int ForeachRangeStatement::hasContinue() | |
| 2154 { | |
| 2155 return TRUE; | |
| 2156 } | |
| 2157 | |
| 2158 int ForeachRangeStatement::usesEH() | |
| 2159 { | |
| 2160 assert(0); | |
| 2161 return body->usesEH(); | |
| 2162 } | |
| 2163 | |
| 2164 int ForeachRangeStatement::blockExit() | |
| 2165 { | |
| 2166 assert(0); | |
| 2167 int result = BEfallthru; | |
| 2168 | |
| 2169 if (lwr && lwr->canThrow()) | |
| 2170 result |= BEthrow; | |
| 2171 else if (upr && upr->canThrow()) | |
| 2172 result |= BEthrow; | |
| 2173 | |
| 2174 if (body) | |
| 2175 { | |
| 2176 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 2177 } | |
| 2178 return result; | |
| 2179 } | |
| 2180 | |
| 2181 | |
| 2182 int ForeachRangeStatement::comeFrom() | |
| 2183 { | |
| 2184 assert(0); | |
| 2185 if (body) | |
| 2186 return body->comeFrom(); | |
| 2187 return FALSE; | |
| 2188 } | |
| 2189 | |
| 2190 void ForeachRangeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2191 { | |
| 2192 buf->writestring(Token::toChars(op)); | |
| 2193 buf->writestring(" ("); | |
| 2194 | |
| 2195 if (arg->type) | |
| 2196 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 2197 else | |
| 2198 buf->writestring(arg->ident->toChars()); | |
| 2199 | |
| 2200 buf->writestring("; "); | |
| 2201 lwr->toCBuffer(buf, hgs); | |
| 2202 buf->writestring(" .. "); | |
| 2203 upr->toCBuffer(buf, hgs); | |
| 2204 buf->writebyte(')'); | |
| 2205 buf->writenl(); | |
| 2206 buf->writebyte('{'); | |
| 2207 buf->writenl(); | |
| 2208 if (body) | |
| 2209 body->toCBuffer(buf, hgs); | |
| 2210 buf->writebyte('}'); | |
| 2211 buf->writenl(); | |
| 2212 } | |
| 2213 | |
| 2214 #endif | |
| 2215 | |
| 159 | 2216 /******************************** IfStatement ***************************/ |
| 2217 | |
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2218 IfStatement::IfStatement(Loc loc, Parameter *arg, Expression *condition, Statement *ifbody, Statement *elsebody) |
| 159 | 2219 : Statement(loc) |
| 2220 { | |
| 2221 this->arg = arg; | |
| 2222 this->condition = condition; | |
| 2223 this->ifbody = ifbody; | |
| 2224 this->elsebody = elsebody; | |
| 2225 this->match = NULL; | |
| 2226 } | |
| 2227 | |
| 2228 Statement *IfStatement::syntaxCopy() | |
| 2229 { | |
| 2230 Statement *i = NULL; | |
| 2231 if (ifbody) | |
| 2232 i = ifbody->syntaxCopy(); | |
| 2233 | |
| 2234 Statement *e = NULL; | |
| 2235 if (elsebody) | |
| 2236 e = elsebody->syntaxCopy(); | |
| 2237 | |
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2238 Parameter *a = arg ? arg->syntaxCopy() : NULL; |
| 159 | 2239 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); |
| 2240 return s; | |
| 2241 } | |
| 2242 | |
| 2243 Statement *IfStatement::semantic(Scope *sc) | |
| 2244 { | |
| 2245 condition = condition->semantic(sc); | |
| 2246 condition = resolveProperties(sc, condition); | |
| 2247 condition = condition->checkToBoolean(); | |
| 2248 | |
| 2249 // If we can short-circuit evaluate the if statement, don't do the | |
| 2250 // semantic analysis of the skipped code. | |
| 2251 // This feature allows a limited form of conditional compilation. | |
| 2252 condition = condition->optimize(WANTflags); | |
| 2253 | |
| 2254 // Evaluate at runtime | |
| 2255 unsigned cs0 = sc->callSuper; | |
| 2256 unsigned cs1; | |
| 2257 | |
| 2258 Scope *scd; | |
| 2259 if (arg) | |
| 2260 { /* Declare arg, which we will set to be the | |
| 2261 * result of condition. | |
| 2262 */ | |
| 2263 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 2264 sym->parent = sc->scopesym; | |
| 2265 scd = sc->push(sym); | |
| 2266 | |
| 2267 Type *t = arg->type ? arg->type : condition->type; | |
| 2268 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
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2269 match->noscope = 1; |
| 159 | 2270 match->semantic(scd); |
| 2271 if (!scd->insert(match)) | |
| 2272 assert(0); | |
| 2273 match->parent = sc->func; | |
| 2274 | |
| 2275 /* Generate: | |
| 2276 * (arg = condition) | |
| 2277 */ | |
| 2278 VarExp *v = new VarExp(0, match); | |
| 2279 condition = new AssignExp(loc, v, condition); | |
| 2280 condition = condition->semantic(scd); | |
| 2281 } | |
| 2282 else | |
| 2283 scd = sc->push(); | |
| 2284 ifbody = ifbody->semantic(scd); | |
| 2285 scd->pop(); | |
| 2286 | |
| 2287 cs1 = sc->callSuper; | |
| 2288 sc->callSuper = cs0; | |
| 2289 if (elsebody) | |
| 2290 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 2291 sc->mergeCallSuper(loc, cs1); | |
| 2292 | |
| 2293 return this; | |
| 2294 } | |
| 2295 | |
| 2296 int IfStatement::usesEH() | |
| 2297 { | |
| 2298 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2299 } | |
| 2300 | |
| 336 | 2301 int IfStatement::blockExit() |
| 2302 { | |
| 2303 //printf("IfStatement::blockExit(%p)\n", this); | |
| 2304 | |
| 2305 int result = BEnone; | |
| 2306 if (condition->canThrow()) | |
| 2307 result |= BEthrow; | |
| 2308 if (condition->isBool(TRUE)) | |
| 2309 { | |
| 2310 if (ifbody) | |
| 2311 result |= ifbody->blockExit(); | |
| 2312 else | |
| 2313 result |= BEfallthru; | |
| 2314 } | |
| 2315 else if (condition->isBool(FALSE)) | |
| 2316 { | |
| 2317 if (elsebody) | |
| 2318 result |= elsebody->blockExit(); | |
| 2319 else | |
| 2320 result |= BEfallthru; | |
| 2321 } | |
| 2322 else | |
| 2323 { | |
| 2324 if (ifbody) | |
| 2325 result |= ifbody->blockExit(); | |
| 2326 else | |
| 2327 result |= BEfallthru; | |
| 2328 if (elsebody) | |
| 2329 result |= elsebody->blockExit(); | |
| 2330 else | |
| 2331 result |= BEfallthru; | |
| 2332 } | |
| 2333 //printf("IfStatement::blockExit(%p) = x%x\n", this, result); | |
| 2334 return result; | |
| 2335 } | |
| 2336 | |
| 1587 | 2337 |
| 159 | 2338 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2339 { | |
| 2340 buf->writestring("if ("); | |
| 2341 if (arg) | |
| 2342 { | |
| 2343 if (arg->type) | |
| 2344 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 2345 else | |
|
510
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2346 { buf->writestring("auto "); |
| 159 | 2347 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
|
2348 } |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2349 buf->writestring(" = "); |
| 159 | 2350 } |
| 2351 condition->toCBuffer(buf, hgs); | |
| 2352 buf->writebyte(')'); | |
| 2353 buf->writenl(); | |
| 2354 ifbody->toCBuffer(buf, hgs); | |
| 2355 if (elsebody) | |
| 2356 { buf->writestring("else"); | |
| 2357 buf->writenl(); | |
| 2358 elsebody->toCBuffer(buf, hgs); | |
| 2359 } | |
| 2360 } | |
| 2361 | |
| 2362 /******************************** ConditionalStatement ***************************/ | |
| 2363 | |
| 2364 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 2365 : Statement(loc) | |
| 2366 { | |
| 2367 this->condition = condition; | |
| 2368 this->ifbody = ifbody; | |
| 2369 this->elsebody = elsebody; | |
| 2370 } | |
| 2371 | |
| 2372 Statement *ConditionalStatement::syntaxCopy() | |
| 2373 { | |
| 2374 Statement *e = NULL; | |
| 2375 if (elsebody) | |
| 2376 e = elsebody->syntaxCopy(); | |
| 2377 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 2378 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 2379 return s; | |
| 2380 } | |
| 2381 | |
| 2382 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 2383 { | |
| 2384 //printf("ConditionalStatement::semantic()\n"); | |
| 2385 | |
| 2386 // If we can short-circuit evaluate the if statement, don't do the | |
| 2387 // semantic analysis of the skipped code. | |
| 2388 // This feature allows a limited form of conditional compilation. | |
| 2389 if (condition->include(sc, NULL)) | |
| 2390 { | |
| 2391 ifbody = ifbody->semantic(sc); | |
| 2392 return ifbody; | |
| 2393 } | |
| 2394 else | |
| 2395 { | |
| 2396 if (elsebody) | |
| 2397 elsebody = elsebody->semantic(sc); | |
| 2398 return elsebody; | |
| 2399 } | |
| 2400 } | |
| 2401 | |
| 2402 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 2403 { | |
| 2404 Statement *s; | |
| 2405 | |
| 2406 if (condition->include(sc, NULL)) | |
| 2407 s = ifbody; | |
| 2408 else | |
| 2409 s = elsebody; | |
| 2410 | |
| 2411 Statements *a = new Statements(); | |
| 2412 a->push(s); | |
| 2413 return a; | |
| 2414 } | |
| 2415 | |
| 2416 int ConditionalStatement::usesEH() | |
| 2417 { | |
| 2418 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2419 } | |
| 2420 | |
|
510
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2421 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
|
2422 { |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2423 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
|
2424 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
|
2425 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
|
2426 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
|
2427 } |
|
6aee82889553
Merged DMD 1.034, array operations are not yet implemented ;)
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
389
diff
changeset
|
2428 |
| 159 | 2429 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2430 { | |
| 2431 condition->toCBuffer(buf, hgs); | |
| 2432 buf->writenl(); | |
| 336 | 2433 buf->writeByte('{'); |
| 2434 buf->writenl(); | |
| 159 | 2435 if (ifbody) |
| 2436 ifbody->toCBuffer(buf, hgs); | |
| 336 | 2437 buf->writeByte('}'); |
| 2438 buf->writenl(); | |
| 159 | 2439 if (elsebody) |
| 2440 { | |
| 2441 buf->writestring("else"); | |
| 2442 buf->writenl(); | |
| 336 | 2443 buf->writeByte('{'); |
| 2444 buf->writenl(); | |
| 159 | 2445 elsebody->toCBuffer(buf, hgs); |
| 336 | 2446 buf->writeByte('}'); |
| 2447 buf->writenl(); | |
| 159 | 2448 } |
| 2449 buf->writenl(); | |
| 2450 } | |
| 2451 | |
| 2452 | |
| 2453 /******************************** PragmaStatement ***************************/ | |
| 2454 | |
| 2455 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 2456 : Statement(loc) | |
| 2457 { | |
| 2458 this->ident = ident; | |
| 2459 this->args = args; | |
| 2460 this->body = body; | |
| 2461 } | |
| 2462 | |
| 2463 Statement *PragmaStatement::syntaxCopy() | |
| 2464 { | |
| 2465 Statement *b = NULL; | |
| 2466 if (body) | |
| 2467 b = body->syntaxCopy(); | |
| 2468 PragmaStatement *s = new PragmaStatement(loc, | |
| 2469 ident, Expression::arraySyntaxCopy(args), b); | |
| 2470 return s; | |
| 2471 } | |
| 2472 | |
| 2473 Statement *PragmaStatement::semantic(Scope *sc) | |
| 2474 { // Should be merged with PragmaDeclaration | |
| 2475 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 2476 //printf("body = %p\n", body); | |
| 2477 if (ident == Id::msg) | |
| 2478 { | |
| 2479 if (args) | |
| 2480 { | |
| 2481 for (size_t i = 0; i < args->dim; i++) | |
| 2482 { | |
| 2483 Expression *e = (Expression *)args->data[i]; | |
| 2484 | |
| 2485 e = e->semantic(sc); | |
|
1630
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2486 #if 1 |
| 159 | 2487 e = e->optimize(WANTvalue | WANTinterpret); |
|
1630
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2488 #else |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2489 e = e->interpret(NULL); |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2490 if (e == EXP_CANT_INTERPRET) |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2491 fprintf(stdmsg, ((Expression *)args->data[i])->toChars()); |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2492 else |
|
44b145be2ef5
Merge dmd 1.056.
Robert Clipsham <robert@octarineparrot.com>
parents:
1607
diff
changeset
|
2493 #endif |
| 159 | 2494 if (e->op == TOKstring) |
| 2495 { | |
| 2496 StringExp *se = (StringExp *)e; | |
| 1587 | 2497 fprintf(stdmsg, "%.*s", (int)se->len, (char *)se->string); |
| 159 | 2498 } |
| 2499 else | |
| 1587 | 2500 fprintf(stdmsg, e->toChars()); |
| 159 | 2501 } |
| 2502 fprintf(stdmsg, "\n"); | |
| 2503 } | |
| 2504 } | |
| 2505 else if (ident == Id::lib) | |
| 2506 { | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2507 #if 1 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2508 /* Should this be allowed? |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2509 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2510 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
|
2511 #else |
| 159 | 2512 if (!args || args->dim != 1) |
| 2513 error("string expected for library name"); | |
| 2514 else | |
| 2515 { | |
| 2516 Expression *e = (Expression *)args->data[0]; | |
| 2517 | |
| 2518 e = e->semantic(sc); | |
| 2519 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2520 args->data[0] = (void *)e; | |
| 2521 if (e->op != TOKstring) | |
| 2522 error("string expected for library name, not '%s'", e->toChars()); | |
| 2523 else if (global.params.verbose) | |
| 2524 { | |
| 2525 StringExp *se = (StringExp *)e; | |
| 2526 char *name = (char *)mem.malloc(se->len + 1); | |
| 2527 memcpy(name, se->string, se->len); | |
| 2528 name[se->len] = 0; | |
| 2529 printf("library %s\n", name); | |
| 2530 mem.free(name); | |
| 2531 } | |
| 2532 } | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2533 #endif |
| 159 | 2534 } |
|
945
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2535 |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2536 // LDC |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2537 else if (ident == Id::allow_inline) |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2538 { |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2539 sc->func->allowInlining = true; |
|
03d7c4aac654
SWITCHED TO LLVM 2.5 !
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
908
diff
changeset
|
2540 } |
| 1587 | 2541 #if DMDV2 |
| 2542 else if (ident == Id::startaddress) | |
| 2543 { | |
| 2544 if (!args || args->dim != 1) | |
| 2545 error("function name expected for start address"); | |
| 2546 else | |
| 2547 { | |
| 2548 Expression *e = (Expression *)args->data[0]; | |
| 2549 e = e->semantic(sc); | |
| 2550 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2551 args->data[0] = (void *)e; | |
| 2552 Dsymbol *sa = getDsymbol(e); | |
| 2553 if (!sa || !sa->isFuncDeclaration()) | |
| 2554 error("function name expected for start address, not '%s'", e->toChars()); | |
| 2555 if (body) | |
| 2556 { | |
| 2557 body = body->semantic(sc); | |
| 2558 } | |
| 2559 return this; | |
| 2560 } | |
| 2561 } | |
| 2562 #endif | |
| 159 | 2563 else |
| 2564 error("unrecognized pragma(%s)", ident->toChars()); | |
| 2565 | |
| 2566 if (body) | |
| 2567 { | |
| 2568 body = body->semantic(sc); | |
| 2569 } | |
| 2570 return body; | |
| 2571 } | |
| 2572 | |
| 2573 int PragmaStatement::usesEH() | |
| 2574 { | |
| 2575 return body && body->usesEH(); | |
| 2576 } | |
| 2577 | |
| 336 | 2578 int PragmaStatement::blockExit() |
| 2579 { | |
| 2580 int result = BEfallthru; | |
| 2581 #if 0 // currently, no code is generated for Pragma's, so it's just fallthru | |
| 2582 if (arrayExpressionCanThrow(args)) | |
| 2583 result |= BEthrow; | |
| 2584 if (body) | |
| 2585 result |= body->blockExit(); | |
| 2586 #endif | |
| 2587 return result; | |
| 2588 } | |
| 2589 | |
| 1587 | 2590 |
| 159 | 2591 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2592 { | |
| 2593 buf->writestring("pragma ("); | |
| 2594 buf->writestring(ident->toChars()); | |
| 2595 if (args && args->dim) | |
| 2596 { | |
| 2597 buf->writestring(", "); | |
| 2598 argsToCBuffer(buf, args, hgs); | |
| 2599 } | |
| 2600 buf->writeByte(')'); | |
| 2601 if (body) | |
| 2602 { | |
| 2603 buf->writenl(); | |
| 2604 buf->writeByte('{'); | |
| 2605 buf->writenl(); | |
| 2606 | |
| 2607 body->toCBuffer(buf, hgs); | |
| 2608 | |
| 2609 buf->writeByte('}'); | |
| 2610 buf->writenl(); | |
| 2611 } | |
| 2612 else | |
| 2613 { | |
| 2614 buf->writeByte(';'); | |
| 2615 buf->writenl(); | |
| 2616 } | |
| 2617 } | |
| 2618 | |
| 2619 | |
| 2620 /******************************** StaticAssertStatement ***************************/ | |
| 2621 | |
| 2622 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 2623 : Statement(sa->loc) | |
| 2624 { | |
| 2625 this->sa = sa; | |
| 2626 } | |
| 2627 | |
| 2628 Statement *StaticAssertStatement::syntaxCopy() | |
| 2629 { | |
| 2630 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 2631 return s; | |
| 2632 } | |
| 2633 | |
| 2634 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 2635 { | |
| 2636 sa->semantic2(sc); | |
| 2637 return NULL; | |
| 2638 } | |
| 2639 | |
| 1587 | 2640 int StaticAssertStatement::blockExit() |
| 2641 { | |
| 2642 return BEfallthru; | |
| 2643 } | |
| 2644 | |
| 159 | 2645 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2646 { | |
| 2647 sa->toCBuffer(buf, hgs); | |
| 2648 } | |
| 2649 | |
| 2650 | |
| 2651 /******************************** SwitchStatement ***************************/ | |
| 2652 | |
| 2653 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 2654 : Statement(loc) | |
| 2655 { | |
| 2656 condition = c; | |
| 2657 body = b; | |
| 2658 sdefault = NULL; | |
| 2659 cases = NULL; | |
| 2660 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
|
2661 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2662 enclosingScopeExit = NULL; |
| 159 | 2663 } |
| 2664 | |
| 2665 Statement *SwitchStatement::syntaxCopy() | |
| 2666 { | |
| 2667 SwitchStatement *s = new SwitchStatement(loc, | |
| 2668 condition->syntaxCopy(), body->syntaxCopy()); | |
| 2669 return s; | |
| 2670 } | |
| 2671 | |
| 2672 Statement *SwitchStatement::semantic(Scope *sc) | |
| 2673 { | |
| 2674 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 2675 assert(!cases); // ensure semantic() is only run once | |
| 2676 | |
|
1159
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2677 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2678 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
|
2679 |
| 159 | 2680 condition = condition->semantic(sc); |
| 2681 condition = resolveProperties(sc, condition); | |
| 2682 if (condition->type->isString()) | |
| 2683 { | |
| 2684 // If it's not an array, cast it to one | |
| 2685 if (condition->type->ty != Tarray) | |
| 2686 { | |
| 2687 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2688 } | |
| 2689 } | |
| 2690 else | |
| 2691 { condition = condition->integralPromotions(sc); | |
| 2692 condition->checkIntegral(); | |
| 2693 } | |
| 2694 condition = condition->optimize(WANTvalue); | |
| 2695 | |
| 2696 sc = sc->push(); | |
| 2697 sc->sbreak = this; | |
| 2698 sc->sw = this; | |
| 2699 | |
| 2700 cases = new Array(); | |
| 2701 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2702 body = body->semantic(sc); | |
| 2703 sc->noctor--; | |
| 2704 | |
| 2705 // Resolve any goto case's with exp | |
| 2706 for (int i = 0; i < gotoCases.dim; i++) | |
| 2707 { | |
| 2708 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2709 | |
| 2710 if (!gcs->exp) | |
| 2711 { | |
| 2712 gcs->error("no case statement following goto case;"); | |
| 2713 break; | |
| 2714 } | |
| 2715 | |
| 2716 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2717 { | |
| 2718 if (!scx->sw) | |
| 2719 continue; | |
| 2720 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2721 { | |
| 2722 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2723 | |
| 2724 if (cs->exp->equals(gcs->exp)) | |
| 2725 { | |
| 2726 gcs->cs = cs; | |
| 2727 goto Lfoundcase; | |
| 2728 } | |
| 2729 } | |
| 2730 } | |
| 2731 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2732 | |
| 2733 Lfoundcase: | |
| 2734 ; | |
| 2735 } | |
| 2736 | |
| 2737 if (!sc->sw->sdefault) | |
| 2738 { hasNoDefault = 1; | |
| 2739 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
945
diff
changeset
|
2740 warning("switch statement has no default"); |
| 159 | 2741 |
| 2742 // Generate runtime error if the default is hit | |
| 2743 Statements *a = new Statements(); | |
| 2744 CompoundStatement *cs; | |
| 2745 Statement *s; | |
| 2746 | |
| 2747 if (global.params.useSwitchError) | |
| 2748 s = new SwitchErrorStatement(loc); | |
| 2749 else | |
| 2750 { Expression *e = new HaltExp(loc); | |
| 2751 s = new ExpStatement(loc, e); | |
| 2752 } | |
| 2753 | |
| 2754 a->reserve(4); | |
| 2755 a->push(body); | |
| 901 | 2756 |
| 2757 // LDC needs semantic to be run on break | |
| 2758 Statement *breakstmt = new BreakStatement(loc, NULL); | |
| 2759 breakstmt->semantic(sc); | |
| 2760 a->push(breakstmt); | |
| 2761 | |
| 159 | 2762 sc->sw->sdefault = new DefaultStatement(loc, s); |
| 2763 a->push(sc->sw->sdefault); | |
| 2764 cs = new CompoundStatement(loc, a); | |
| 2765 body = cs; | |
| 2766 } | |
| 2767 | |
| 1587 | 2768 #if DMDV2 |
| 2769 if (isFinal) | |
| 2770 { Type *t = condition->type; | |
| 2771 while (t->ty == Ttypedef) | |
| 2772 { // Don't use toBasetype() because that will skip past enums | |
| 2773 t = ((TypeTypedef *)t)->sym->basetype; | |
| 2774 } | |
| 2775 if (condition->type->ty == Tenum) | |
| 2776 { TypeEnum *te = (TypeEnum *)condition->type; | |
| 2777 EnumDeclaration *ed = te->toDsymbol(sc)->isEnumDeclaration(); | |
| 2778 assert(ed); | |
| 2779 size_t dim = ed->members->dim; | |
| 2780 for (size_t i = 0; i < dim; i++) | |
| 2781 { | |
| 2782 EnumMember *em = ((Dsymbol *)ed->members->data[i])->isEnumMember(); | |
| 2783 if (em) | |
| 2784 { | |
| 2785 for (size_t j = 0; j < cases->dim; j++) | |
| 2786 { CaseStatement *cs = (CaseStatement *)cases->data[j]; | |
| 2787 if (cs->exp->equals(em->value)) | |
| 2788 goto L1; | |
| 2789 } | |
| 2790 error("enum member %s not represented in final switch", em->toChars()); | |
| 2791 } | |
| 2792 L1: | |
| 2793 ; | |
| 2794 } | |
| 2795 } | |
| 2796 } | |
| 2797 #endif | |
| 2798 | |
| 159 | 2799 sc->pop(); |
| 2800 return this; | |
| 2801 } | |
| 2802 | |
| 2803 int SwitchStatement::hasBreak() | |
| 2804 { | |
| 2805 return TRUE; | |
| 2806 } | |
| 2807 | |
| 2808 int SwitchStatement::usesEH() | |
| 2809 { | |
| 2810 return body ? body->usesEH() : 0; | |
| 2811 } | |
| 2812 | |
| 336 | 2813 int SwitchStatement::blockExit() |
| 2814 { int result = BEnone; | |
| 2815 if (condition->canThrow()) | |
| 2816 result |= BEthrow; | |
| 2817 | |
| 2818 if (body) | |
| 2819 { result |= body->blockExit(); | |
| 2820 if (result & BEbreak) | |
| 2821 { result |= BEfallthru; | |
| 2822 result &= ~BEbreak; | |
| 2823 } | |
| 2824 } | |
| 2825 else | |
| 2826 result |= BEfallthru; | |
| 2827 | |
| 2828 return result; | |
| 2829 } | |
| 2830 | |
| 1587 | 2831 |
| 159 | 2832 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2833 { | |
| 2834 buf->writestring("switch ("); | |
| 2835 condition->toCBuffer(buf, hgs); | |
| 2836 buf->writebyte(')'); | |
| 2837 buf->writenl(); | |
| 2838 if (body) | |
| 2839 { | |
| 2840 if (!body->isScopeStatement()) | |
| 2841 { buf->writebyte('{'); | |
| 2842 buf->writenl(); | |
| 2843 body->toCBuffer(buf, hgs); | |
| 2844 buf->writebyte('}'); | |
| 2845 buf->writenl(); | |
| 2846 } | |
| 2847 else | |
| 2848 { | |
| 2849 body->toCBuffer(buf, hgs); | |
| 2850 } | |
| 2851 } | |
| 2852 } | |
| 2853 | |
| 2854 /******************************** CaseStatement ***************************/ | |
| 2855 | |
| 2856 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2857 : Statement(loc) | |
| 2858 { | |
| 2859 this->exp = exp; | |
| 2860 this->statement = s; | |
| 2861 cblock = NULL; | |
| 2862 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
|
2863 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
|
2864 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2865 enclosingScopeExit = NULL; |
| 159 | 2866 } |
| 2867 | |
| 2868 Statement *CaseStatement::syntaxCopy() | |
| 2869 { | |
| 2870 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2871 return s; | |
| 2872 } | |
| 2873 | |
| 2874 Statement *CaseStatement::semantic(Scope *sc) | |
| 2875 { SwitchStatement *sw = sc->sw; | |
| 2876 | |
| 2877 //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
|
2878 |
| 159 | 2879 exp = exp->semantic(sc); |
| 2880 if (sw) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2881 { |
|
1164
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2882 // LDC |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2883 enclosingScopeExit = sc->enclosingScopeExit; |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2884 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
|
2885 { |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2886 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
|
2887 } |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2888 |
| 159 | 2889 exp = exp->implicitCastTo(sc, sw->condition->type); |
| 2890 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2891 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2892 { | |
| 2893 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2894 exp = new IntegerExp(0); | |
| 2895 } | |
| 2896 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2897 for (int i = 0; i < sw->cases->dim; i++) |
| 159 | 2898 { |
| 2899 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2900 | |
| 2901 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2902 if (cs->exp->equals(exp)) | |
| 2903 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2904 break; | |
| 2905 } | |
| 2906 } | |
| 2907 | |
| 2908 sw->cases->push(this); | |
| 2909 | |
| 2910 // 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
|
2911 for (size_t i = 0; i < sw->gotoCases.dim; i++) |
| 159 | 2912 { |
| 2913 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2914 | |
| 2915 if (!gcs->exp) | |
| 2916 { | |
| 2917 gcs->cs = this; | |
| 2918 sw->gotoCases.remove(i); // remove from array | |
| 2919 } | |
| 2920 } | |
| 2921 } | |
| 2922 else | |
| 2923 error("case not in switch statement"); | |
| 2924 statement = statement->semantic(sc); | |
| 2925 return this; | |
| 2926 } | |
| 2927 | |
| 2928 int CaseStatement::compare(Object *obj) | |
| 2929 { | |
| 2930 // Sort cases so we can do an efficient lookup | |
| 2931 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2932 | |
| 2933 return exp->compare(cs2->exp); | |
| 2934 } | |
| 2935 | |
| 2936 int CaseStatement::usesEH() | |
| 2937 { | |
| 2938 return statement->usesEH(); | |
| 2939 } | |
| 2940 | |
| 336 | 2941 int CaseStatement::blockExit() |
| 2942 { | |
| 2943 return statement->blockExit(); | |
| 2944 } | |
| 2945 | |
| 1587 | 2946 |
| 159 | 2947 int CaseStatement::comeFrom() |
| 2948 { | |
| 2949 return TRUE; | |
| 2950 } | |
| 2951 | |
| 2952 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2953 { | |
| 2954 buf->writestring("case "); | |
| 2955 exp->toCBuffer(buf, hgs); | |
| 2956 buf->writebyte(':'); | |
| 2957 buf->writenl(); | |
| 2958 statement->toCBuffer(buf, hgs); | |
| 2959 } | |
| 2960 | |
| 1587 | 2961 /******************************** CaseRangeStatement ***************************/ |
| 2962 | |
| 2963 #if DMDV2 | |
| 2964 | |
| 2965 CaseRangeStatement::CaseRangeStatement(Loc loc, Expression *first, | |
| 2966 Expression *last, Statement *s) | |
| 2967 : Statement(loc) | |
| 2968 { | |
| 2969 this->first = first; | |
| 2970 this->last = last; | |
| 2971 this->statement = s; | |
| 2972 } | |
| 2973 | |
| 2974 Statement *CaseRangeStatement::syntaxCopy() | |
| 2975 { | |
| 2976 CaseRangeStatement *s = new CaseRangeStatement(loc, | |
| 2977 first->syntaxCopy(), last->syntaxCopy(), statement->syntaxCopy()); | |
| 2978 return s; | |
| 2979 } | |
| 2980 | |
| 2981 Statement *CaseRangeStatement::semantic(Scope *sc) | |
| 2982 { SwitchStatement *sw = sc->sw; | |
| 2983 | |
| 2984 //printf("CaseRangeStatement::semantic() %s\n", toChars()); | |
| 2985 if (sw->isFinal) | |
| 2986 error("case ranges not allowed in final switch"); | |
| 2987 | |
| 2988 first = first->semantic(sc); | |
| 2989 first = first->implicitCastTo(sc, sw->condition->type); | |
| 2990 first = first->optimize(WANTvalue | WANTinterpret); | |
| 2991 dinteger_t fval = first->toInteger(); | |
| 2992 | |
| 2993 last = last->semantic(sc); | |
| 2994 last = last->implicitCastTo(sc, sw->condition->type); | |
| 2995 last = last->optimize(WANTvalue | WANTinterpret); | |
| 2996 dinteger_t lval = last->toInteger(); | |
| 2997 | |
| 2998 if (lval - fval > 256) | |
| 2999 { error("more than 256 cases in case range"); | |
| 3000 lval = fval + 256; | |
| 3001 } | |
| 3002 | |
| 3003 /* This works by replacing the CaseRange with an array of Case's. | |
| 3004 * | |
| 3005 * case a: .. case b: s; | |
| 3006 * => | |
| 3007 * case a: | |
| 3008 * [...] | |
| 3009 * case b: | |
| 3010 * s; | |
| 3011 */ | |
| 3012 | |
| 3013 Statements *statements = new Statements(); | |
| 3014 for (dinteger_t i = fval; i <= lval; i++) | |
| 3015 { | |
| 3016 Statement *s = statement; | |
| 3017 if (i != lval) | |
| 3018 s = new ExpStatement(loc, NULL); | |
| 3019 Expression *e = new IntegerExp(loc, i, first->type); | |
| 3020 Statement *cs = new CaseStatement(loc, e, s); | |
| 3021 statements->push(cs); | |
| 3022 } | |
| 3023 Statement *s = new CompoundStatement(loc, statements); | |
| 3024 s = s->semantic(sc); | |
| 3025 return s; | |
| 3026 } | |
| 3027 | |
| 3028 void CaseRangeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3029 { | |
| 3030 buf->writestring("case "); | |
| 3031 first->toCBuffer(buf, hgs); | |
| 3032 buf->writestring(": .. case "); | |
| 3033 last->toCBuffer(buf, hgs); | |
| 3034 buf->writenl(); | |
| 3035 statement->toCBuffer(buf, hgs); | |
| 3036 } | |
| 3037 | |
| 3038 #endif | |
| 3039 | |
| 159 | 3040 /******************************** DefaultStatement ***************************/ |
| 3041 | |
| 3042 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 3043 : Statement(loc) | |
| 3044 { | |
| 3045 this->statement = s; | |
| 3046 #if IN_GCC | |
| 3047 + cblock = NULL; | |
| 3048 #endif | |
| 3049 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
|
3050 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3051 enclosingScopeExit = NULL; |
| 159 | 3052 } |
| 3053 | |
| 3054 Statement *DefaultStatement::syntaxCopy() | |
| 3055 { | |
| 3056 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 3057 return s; | |
| 3058 } | |
| 3059 | |
| 3060 Statement *DefaultStatement::semantic(Scope *sc) | |
| 3061 { | |
| 336 | 3062 //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
|
3063 |
| 159 | 3064 if (sc->sw) |
| 3065 { | |
| 3066 if (sc->sw->sdefault) | |
| 3067 { | |
| 3068 error("switch statement already has a default"); | |
| 3069 } | |
| 3070 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
|
3071 |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3072 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3073 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
|
3074 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
|
3075 { |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
3076 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
|
3077 } |
| 159 | 3078 } |
| 3079 else | |
| 3080 error("default not in switch statement"); | |
| 3081 statement = statement->semantic(sc); | |
| 3082 return this; | |
| 3083 } | |
| 3084 | |
| 3085 int DefaultStatement::usesEH() | |
| 3086 { | |
| 3087 return statement->usesEH(); | |
| 3088 } | |
| 3089 | |
| 336 | 3090 int DefaultStatement::blockExit() |
| 3091 { | |
| 3092 return statement->blockExit(); | |
| 3093 } | |
| 3094 | |
| 1587 | 3095 |
| 159 | 3096 int DefaultStatement::comeFrom() |
| 3097 { | |
| 3098 return TRUE; | |
| 3099 } | |
| 3100 | |
| 3101 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3102 { | |
| 3103 buf->writestring("default:\n"); | |
| 3104 statement->toCBuffer(buf, hgs); | |
| 3105 } | |
| 3106 | |
| 3107 /******************************** GotoDefaultStatement ***************************/ | |
| 3108 | |
| 3109 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 3110 : Statement(loc) | |
| 3111 { | |
| 3112 sw = NULL; | |
| 3113 } | |
| 3114 | |
| 3115 Statement *GotoDefaultStatement::syntaxCopy() | |
| 3116 { | |
| 3117 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 3118 return s; | |
| 3119 } | |
| 3120 | |
| 3121 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 3122 { | |
| 3123 sw = sc->sw; | |
| 3124 if (!sw) | |
| 3125 error("goto default not in switch statement"); | |
| 3126 return this; | |
| 3127 } | |
| 3128 | |
| 336 | 3129 int GotoDefaultStatement::blockExit() |
| 3130 { | |
| 3131 return BEgoto; | |
| 3132 } | |
| 3133 | |
| 1587 | 3134 |
| 159 | 3135 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3136 { | |
| 3137 buf->writestring("goto default;\n"); | |
| 3138 } | |
| 3139 | |
| 3140 /******************************** GotoCaseStatement ***************************/ | |
| 3141 | |
| 3142 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 3143 : Statement(loc) | |
| 3144 { | |
| 3145 cs = NULL; | |
| 3146 this->exp = exp; | |
| 3147 sw = NULL; | |
| 3148 } | |
| 3149 | |
| 3150 Statement *GotoCaseStatement::syntaxCopy() | |
| 3151 { | |
| 3152 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3153 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 3154 return s; | |
| 3155 } | |
| 3156 | |
| 3157 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 3158 { | |
| 3159 if (exp) | |
| 3160 exp = exp->semantic(sc); | |
| 3161 | |
| 3162 if (!sc->sw) | |
| 3163 error("goto case not in switch statement"); | |
| 3164 else | |
| 3165 { | |
| 3166 sw = sc->sw; | |
| 3167 sc->sw->gotoCases.push(this); | |
| 3168 if (exp) | |
| 3169 { | |
| 3170 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 3171 exp = exp->optimize(WANTvalue); | |
| 3172 } | |
| 3173 } | |
| 3174 return this; | |
| 3175 } | |
| 3176 | |
| 336 | 3177 int GotoCaseStatement::blockExit() |
| 3178 { | |
| 3179 return BEgoto; | |
| 3180 } | |
| 3181 | |
| 1587 | 3182 |
| 159 | 3183 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3184 { | |
| 3185 buf->writestring("goto case"); | |
| 3186 if (exp) | |
| 3187 { buf->writebyte(' '); | |
| 3188 exp->toCBuffer(buf, hgs); | |
| 3189 } | |
| 3190 buf->writebyte(';'); | |
| 3191 buf->writenl(); | |
| 3192 } | |
| 3193 | |
| 3194 /******************************** SwitchErrorStatement ***************************/ | |
| 3195 | |
| 3196 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 3197 : Statement(loc) | |
| 3198 { | |
| 3199 } | |
| 3200 | |
| 336 | 3201 int SwitchErrorStatement::blockExit() |
| 3202 { | |
| 3203 return BEthrow; | |
| 3204 } | |
| 3205 | |
| 1587 | 3206 |
| 159 | 3207 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3208 { | |
| 3209 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 3210 buf->writenl(); | |
| 3211 } | |
| 3212 | |
| 3213 /******************************** ReturnStatement ***************************/ | |
| 3214 | |
| 3215 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 3216 : Statement(loc) | |
| 3217 { | |
| 3218 this->exp = exp; | |
| 3219 } | |
| 3220 | |
| 3221 Statement *ReturnStatement::syntaxCopy() | |
| 3222 { | |
| 3223 Expression *e = NULL; | |
| 3224 if (exp) | |
| 3225 e = exp->syntaxCopy(); | |
| 3226 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 3227 return s; | |
| 3228 } | |
| 3229 | |
| 3230 Statement *ReturnStatement::semantic(Scope *sc) | |
| 3231 { | |
| 3232 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 3233 | |
| 3234 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3235 Scope *scx = sc; | |
| 3236 int implicit0 = 0; | |
| 3237 | |
| 3238 if (sc->fes) | |
| 3239 { | |
| 3240 // Find scope of function foreach is in | |
| 3241 for (; 1; scx = scx->enclosing) | |
| 3242 { | |
| 3243 assert(scx); | |
| 3244 if (scx->func != fd) | |
| 3245 { fd = scx->func; // fd is now function enclosing foreach | |
| 3246 break; | |
| 3247 } | |
| 3248 } | |
| 3249 } | |
| 3250 | |
| 3251 Type *tret = fd->type->nextOf(); | |
| 3252 if (fd->tintro) | |
| 336 | 3253 /* We'll be implicitly casting the return expression to tintro |
| 3254 */ | |
| 159 | 3255 tret = fd->tintro->nextOf(); |
| 3256 Type *tbret = NULL; | |
| 3257 | |
| 3258 if (tret) | |
| 3259 tbret = tret->toBasetype(); | |
| 3260 | |
| 3261 // main() returns 0, even if it returns void | |
| 3262 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 3263 { implicit0 = 1; | |
| 3264 exp = new IntegerExp(0); | |
| 3265 } | |
| 3266 | |
| 3267 if (sc->incontract || scx->incontract) | |
| 3268 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
|
3269 if (sc->enclosingFinally || scx->enclosingFinally) |
| 159 | 3270 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); |
| 3271 | |
| 3272 if (fd->isCtorDeclaration()) | |
| 3273 { | |
| 3274 // Constructors implicitly do: | |
| 3275 // return this; | |
| 3276 if (exp && exp->op != TOKthis) | |
| 3277 error("cannot return expression from constructor"); | |
| 3278 exp = new ThisExp(0); | |
| 3279 } | |
| 3280 | |
| 3281 if (!exp) | |
| 3282 fd->nrvo_can = 0; | |
| 3283 | |
| 3284 if (exp) | |
| 3285 { | |
| 3286 fd->hasReturnExp |= 1; | |
| 3287 | |
| 3288 exp = exp->semantic(sc); | |
| 3289 exp = resolveProperties(sc, exp); | |
| 3290 exp = exp->optimize(WANTvalue); | |
| 3291 | |
| 3292 if (fd->nrvo_can && exp->op == TOKvar) | |
| 3293 { VarExp *ve = (VarExp *)exp; | |
| 3294 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 3295 | |
| 3296 if (!v || v->isOut() || v->isRef()) | |
| 3297 fd->nrvo_can = 0; | |
| 3298 else if (fd->nrvo_var == NULL) | |
| 3299 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 1587 | 3300 { //printf("Setting nrvo to %s\n", v->toChars()); |
| 159 | 3301 fd->nrvo_var = v; |
| 1587 | 3302 } |
| 159 | 3303 else |
| 3304 fd->nrvo_can = 0; | |
| 3305 } | |
| 3306 else if (fd->nrvo_var != v) | |
| 3307 fd->nrvo_can = 0; | |
| 3308 } | |
| 3309 else | |
| 3310 fd->nrvo_can = 0; | |
| 3311 | |
| 3312 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 3313 { | |
| 3314 } | |
| 3315 else if (fd->inferRetType) | |
| 3316 { | |
| 3317 if (fd->type->nextOf()) | |
| 3318 { | |
| 3319 if (!exp->type->equals(fd->type->nextOf())) | |
| 3320 error("mismatched function return type inference of %s and %s", | |
| 3321 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 3322 } | |
| 3323 else | |
| 3324 { | |
| 3325 fd->type->next = exp->type; | |
| 3326 fd->type = fd->type->semantic(loc, sc); | |
| 3327 if (!fd->tintro) | |
| 3328 { tret = fd->type->nextOf(); | |
| 3329 tbret = tret->toBasetype(); | |
| 3330 } | |
| 3331 } | |
| 3332 } | |
| 3333 else if (tbret->ty != Tvoid) | |
| 3334 { | |
| 3335 exp = exp->implicitCastTo(sc, tret); | |
| 3336 } | |
| 3337 } | |
| 3338 else if (fd->inferRetType) | |
| 3339 { | |
| 3340 if (fd->type->nextOf()) | |
| 3341 { | |
| 3342 if (fd->type->nextOf()->ty != Tvoid) | |
| 3343 error("mismatched function return type inference of void and %s", | |
| 3344 fd->type->nextOf()->toChars()); | |
| 3345 } | |
| 3346 else | |
| 3347 { | |
| 3348 fd->type->next = Type::tvoid; | |
| 3349 fd->type = fd->type->semantic(loc, sc); | |
| 3350 if (!fd->tintro) | |
| 3351 { tret = Type::tvoid; | |
| 3352 tbret = tret; | |
| 3353 } | |
| 3354 } | |
| 3355 } | |
| 3356 else if (tbret->ty != Tvoid) // if non-void return | |
| 3357 error("return expression expected"); | |
| 3358 | |
| 3359 if (sc->fes) | |
| 3360 { | |
| 3361 Statement *s; | |
| 3362 | |
| 3363 if (exp && !implicit0) | |
| 3364 { | |
| 3365 exp = exp->implicitCastTo(sc, tret); | |
| 3366 } | |
| 3367 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 3368 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 3369 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 3370 exp->op == TOKstring) | |
| 3371 { | |
| 3372 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
|
3373 // Construct: return cases.dim+1; |
| 159 | 3374 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 3375 } | |
| 3376 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 3377 { | |
| 3378 s = new ReturnStatement(0, NULL); | |
| 3379 sc->fes->cases.push(s); | |
| 3380 | |
| 3381 // Construct: { exp; return cases.dim + 1; } | |
|
846
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3382 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3383 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 3384 s = new CompoundStatement(loc, s1, s2); |
| 3385 } | |
| 3386 else | |
| 3387 { | |
| 3388 // Construct: return vresult; | |
| 3389 if (!fd->vresult) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3390 { // Declare vresult |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3391 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
|
3392 v->noscope = 1; |
| 159 | 3393 v->semantic(scx); |
| 3394 if (!scx->insert(v)) | |
| 3395 assert(0); | |
| 3396 v->parent = fd; | |
| 3397 fd->vresult = v; | |
| 3398 } | |
| 3399 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3400 s = new ReturnStatement(0, new VarExp(0, fd->vresult)); |
| 159 | 3401 sc->fes->cases.push(s); |
| 3402 | |
| 3403 // 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
|
3404 exp = new AssignExp(loc, new VarExp(0, fd->vresult), exp); |
| 1587 | 3405 exp->op = TOKconstruct; |
| 159 | 3406 exp = exp->semantic(sc); |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3407 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3408 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 3409 s = new CompoundStatement(loc, s1, s2); |
| 3410 } | |
| 3411 return s; | |
| 3412 } | |
| 3413 | |
| 3414 if (exp) | |
| 3415 { | |
| 3416 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 3417 { | |
| 3418 assert(fd->vresult); | |
| 3419 VarExp *v = new VarExp(0, fd->vresult); | |
| 3420 | |
| 3421 exp = new AssignExp(loc, v, exp); | |
| 1587 | 3422 exp->op = TOKconstruct; |
| 159 | 3423 exp = exp->semantic(sc); |
| 3424 } | |
| 3425 //exp->dump(0); | |
| 3426 //exp->print(); | |
| 3427 exp->checkEscape(); | |
| 3428 } | |
| 3429 | |
| 3430 /* BUG: need to issue an error on: | |
| 3431 * this | |
| 3432 * { if (x) return; | |
| 3433 * super(); | |
| 3434 * } | |
| 3435 */ | |
| 3436 | |
| 3437 if (sc->callSuper & CSXany_ctor && | |
| 3438 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 3439 error("return without calling constructor"); | |
| 3440 | |
| 3441 sc->callSuper |= CSXreturn; | |
| 3442 | |
| 3443 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 3444 if (fd->returnLabel) | |
| 3445 { | |
| 3446 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 3447 | |
| 3448 gs->label = fd->returnLabel; | |
| 3449 if (exp) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3450 { /* Replace: return exp; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3451 * with: exp; goto returnLabel; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3452 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3453 Statement *s = new ExpStatement(0, exp); |
| 159 | 3454 return new CompoundStatement(loc, s, gs); |
| 3455 } | |
| 3456 return gs; | |
| 3457 } | |
| 3458 | |
| 1587 | 3459 if (exp && tbret->ty == Tvoid && !implicit0) |
| 336 | 3460 { |
| 3461 /* Replace: | |
| 3462 * return exp; | |
| 3463 * with: | |
| 3464 * exp; return; | |
| 3465 */ | |
| 3466 Statement *s = new ExpStatement(loc, exp); | |
| 1587 | 3467 exp = NULL; |
| 3468 s = s->semantic(sc); | |
| 159 | 3469 loc = 0; |
| 3470 return new CompoundStatement(loc, s, this); | |
| 3471 } | |
| 3472 | |
| 3473 return this; | |
| 3474 } | |
| 3475 | |
| 336 | 3476 int ReturnStatement::blockExit() |
| 3477 { int result = BEreturn; | |
| 3478 | |
| 3479 if (exp && exp->canThrow()) | |
| 3480 result |= BEthrow; | |
| 3481 return result; | |
| 3482 } | |
| 3483 | |
| 1587 | 3484 |
| 159 | 3485 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3486 { | |
| 3487 buf->printf("return "); | |
| 3488 if (exp) | |
| 3489 exp->toCBuffer(buf, hgs); | |
| 3490 buf->writeByte(';'); | |
| 3491 buf->writenl(); | |
| 3492 } | |
| 3493 | |
| 3494 /******************************** BreakStatement ***************************/ | |
| 3495 | |
| 3496 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 3497 : Statement(loc) | |
| 3498 { | |
| 3499 this->ident = ident; | |
| 3500 } | |
| 3501 | |
| 3502 Statement *BreakStatement::syntaxCopy() | |
| 3503 { | |
| 3504 BreakStatement *s = new BreakStatement(loc, ident); | |
| 3505 return s; | |
| 3506 } | |
| 3507 | |
| 3508 Statement *BreakStatement::semantic(Scope *sc) | |
| 3509 { | |
| 336 | 3510 //printf("BreakStatement::semantic()\n"); |
| 159 | 3511 // If: |
| 3512 // break Identifier; | |
| 3513 if (ident) | |
| 3514 { | |
| 3515 Scope *scx; | |
| 3516 FuncDeclaration *thisfunc = sc->func; | |
| 3517 | |
| 3518 for (scx = sc; scx; scx = scx->enclosing) | |
| 3519 { | |
| 3520 LabelStatement *ls; | |
| 3521 | |
| 3522 if (scx->func != thisfunc) // if in enclosing function | |
| 3523 { | |
| 3524 if (sc->fes) // if this is the body of a foreach | |
| 3525 { | |
| 3526 /* Post this statement to the fes, and replace | |
| 3527 * it with a return value that caller will put into | |
| 3528 * a switch. Caller will figure out where the break | |
| 3529 * label actually is. | |
| 3530 * Case numbers start with 2, not 0, as 0 is continue | |
| 3531 * and 1 is break. | |
| 3532 */ | |
| 3533 Statement *s; | |
| 3534 sc->fes->cases.push(this); | |
| 3535 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3536 return s; | |
| 3537 } | |
| 3538 break; // can't break to it | |
| 3539 } | |
| 3540 | |
| 3541 ls = scx->slabel; | |
| 3542 if (ls && ls->ident == ident) | |
| 3543 { | |
| 3544 Statement *s = ls->statement; | |
| 3545 | |
| 3546 if (!s->hasBreak()) | |
| 3547 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
|
3548 if (ls->enclosingFinally != sc->enclosingFinally) |
| 159 | 3549 error("cannot break out of finally block"); |
| 3550 | |
| 3551 this->target = ls; | |
| 3552 return this; | |
| 3553 } | |
| 3554 } | |
| 3555 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 3556 } | |
| 3557 else if (!sc->sbreak) | |
| 3558 { | |
| 3559 if (sc->fes) | |
| 3560 { Statement *s; | |
| 3561 | |
| 3562 // Replace break; with return 1; | |
| 3563 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 3564 return s; | |
| 3565 } | |
| 3566 error("break is not inside a loop or switch"); | |
| 3567 } | |
| 3568 return this; | |
| 3569 } | |
| 3570 | |
| 336 | 3571 int BreakStatement::blockExit() |
| 3572 { | |
| 3573 //printf("BreakStatement::blockExit(%p) = x%x\n", this, ident ? BEgoto : BEbreak); | |
| 3574 return ident ? BEgoto : BEbreak; | |
| 3575 } | |
| 3576 | |
| 1587 | 3577 |
| 159 | 3578 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3579 { | |
| 3580 buf->writestring("break"); | |
| 3581 if (ident) | |
| 3582 { buf->writebyte(' '); | |
| 3583 buf->writestring(ident->toChars()); | |
| 3584 } | |
| 3585 buf->writebyte(';'); | |
| 3586 buf->writenl(); | |
| 3587 } | |
| 3588 | |
| 3589 /******************************** ContinueStatement ***************************/ | |
| 3590 | |
| 3591 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 3592 : Statement(loc) | |
| 3593 { | |
| 3594 this->ident = ident; | |
| 3595 } | |
| 3596 | |
| 3597 Statement *ContinueStatement::syntaxCopy() | |
| 3598 { | |
| 3599 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 3600 return s; | |
| 3601 } | |
| 3602 | |
| 3603 Statement *ContinueStatement::semantic(Scope *sc) | |
| 3604 { | |
| 3605 //printf("ContinueStatement::semantic() %p\n", this); | |
| 3606 if (ident) | |
| 3607 { | |
| 3608 Scope *scx; | |
| 3609 FuncDeclaration *thisfunc = sc->func; | |
| 3610 | |
| 3611 for (scx = sc; scx; scx = scx->enclosing) | |
| 3612 { | |
| 3613 LabelStatement *ls; | |
| 3614 | |
| 3615 if (scx->func != thisfunc) // if in enclosing function | |
| 3616 { | |
| 3617 if (sc->fes) // if this is the body of a foreach | |
| 3618 { | |
| 3619 for (; scx; scx = scx->enclosing) | |
| 3620 { | |
| 3621 ls = scx->slabel; | |
| 3622 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 3623 { | |
| 3624 // Replace continue ident; with return 0; | |
| 3625 return new ReturnStatement(0, new IntegerExp(0)); | |
| 3626 } | |
| 3627 } | |
| 3628 | |
| 3629 /* Post this statement to the fes, and replace | |
| 3630 * it with a return value that caller will put into | |
| 3631 * a switch. Caller will figure out where the break | |
| 3632 * label actually is. | |
| 3633 * Case numbers start with 2, not 0, as 0 is continue | |
| 3634 * and 1 is break. | |
| 3635 */ | |
| 3636 Statement *s; | |
| 3637 sc->fes->cases.push(this); | |
| 3638 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3639 return s; | |
| 3640 } | |
| 3641 break; // can't continue to it | |
| 3642 } | |
| 3643 | |
| 3644 ls = scx->slabel; | |
| 3645 if (ls && ls->ident == ident) | |
| 3646 { | |
| 3647 Statement *s = ls->statement; | |
| 3648 | |
| 3649 if (!s->hasContinue()) | |
| 3650 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
|
3651 if (ls->enclosingFinally != sc->enclosingFinally) |
| 159 | 3652 error("cannot continue out of finally block"); |
| 3653 | |
| 3654 this->target = ls; | |
| 3655 return this; | |
| 3656 } | |
| 3657 } | |
| 3658 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 3659 } | |
| 3660 else if (!sc->scontinue) | |
| 3661 { | |
| 3662 if (sc->fes) | |
| 3663 { Statement *s; | |
| 3664 | |
| 3665 // Replace continue; with return 0; | |
| 3666 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 3667 return s; | |
| 3668 } | |
| 3669 error("continue is not inside a loop"); | |
| 3670 } | |
| 3671 return this; | |
| 3672 } | |
| 3673 | |
| 336 | 3674 int ContinueStatement::blockExit() |
| 3675 { | |
| 3676 return ident ? BEgoto : BEcontinue; | |
| 3677 } | |
| 3678 | |
| 1587 | 3679 |
| 159 | 3680 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3681 { | |
| 3682 buf->writestring("continue"); | |
| 3683 if (ident) | |
| 3684 { buf->writebyte(' '); | |
| 3685 buf->writestring(ident->toChars()); | |
| 3686 } | |
| 3687 buf->writebyte(';'); | |
| 3688 buf->writenl(); | |
| 3689 } | |
| 3690 | |
| 3691 /******************************** SynchronizedStatement ***************************/ | |
| 3692 | |
| 3693 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 3694 : Statement(loc) | |
| 3695 { | |
| 3696 this->exp = exp; | |
| 3697 this->body = body; | |
| 3698 this->esync = NULL; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3699 // LDC |
| 309 | 3700 this->llsync = NULL; |
| 159 | 3701 } |
| 3702 | |
| 3703 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 3704 : Statement(loc) | |
| 3705 { | |
| 3706 this->exp = NULL; | |
| 3707 this->body = body; | |
| 3708 this->esync = esync; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3709 // LDC |
| 309 | 3710 this->llsync = NULL; |
| 159 | 3711 } |
| 3712 | |
| 3713 Statement *SynchronizedStatement::syntaxCopy() | |
| 3714 { | |
| 3715 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3716 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 3717 return s; | |
| 3718 } | |
| 3719 | |
| 3720 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 3721 { | |
| 3722 if (exp) | |
| 1587 | 3723 { |
| 159 | 3724 exp = exp->semantic(sc); |
| 3725 exp = resolveProperties(sc, exp); | |
| 1587 | 3726 ClassDeclaration *cd = exp->type->isClassHandle(); |
| 159 | 3727 if (!cd) |
| 3728 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 3729 else if (cd->isInterfaceDeclaration()) | |
| 1587 | 3730 { /* Cast the interface to an object, as the object has the monitor, |
| 3731 * not the interface. | |
| 3732 */ | |
| 3733 Type *t = new TypeIdentifier(0, Id::Object); | |
| 159 | 3734 |
| 3735 t = t->semantic(0, sc); | |
| 3736 exp = new CastExp(loc, exp, t); | |
| 3737 exp = exp->semantic(sc); | |
| 3738 } | |
| 1587 | 3739 |
| 3740 #if 0 | |
| 3741 /* Rewrite as: | |
| 3742 * auto tmp = exp; | |
| 3743 * _d_monitorenter(tmp); | |
| 3744 * try { body } finally { _d_monitorexit(tmp); } | |
| 3745 */ | |
| 3746 Identifier *id = Lexer::uniqueId("__sync"); | |
| 3747 ExpInitializer *ie = new ExpInitializer(loc, exp); | |
| 3748 VarDeclaration *tmp = new VarDeclaration(loc, exp->type, id, ie); | |
| 3749 | |
| 3750 Statements *cs = new Statements(); | |
| 3751 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 3752 | |
| 3753 FuncDeclaration *fdenter = FuncDeclaration::genCfunc(Type::tvoid, Id::monitorenter); | |
| 3754 Expression *e = new CallExp(loc, new VarExp(loc, fdenter), new VarExp(loc, tmp)); | |
| 3755 e->type = Type::tvoid; // do not run semantic on e | |
| 3756 cs->push(new ExpStatement(loc, e)); | |
| 3757 | |
| 3758 FuncDeclaration *fdexit = FuncDeclaration::genCfunc(Type::tvoid, Id::monitorexit); | |
| 3759 e = new CallExp(loc, new VarExp(loc, fdexit), new VarExp(loc, tmp)); | |
| 3760 e->type = Type::tvoid; // do not run semantic on e | |
| 3761 Statement *s = new ExpStatement(loc, e); | |
| 3762 s = new TryFinallyStatement(loc, body, s); | |
| 3763 cs->push(s); | |
| 3764 | |
| 3765 s = new CompoundStatement(loc, cs); | |
| 3766 return s->semantic(sc); | |
| 3767 #endif | |
| 159 | 3768 } |
| 1587 | 3769 #if 0 |
| 3770 else | |
| 3771 { /* Generate our own critical section, then rewrite as: | |
| 3772 * __gshared byte[CriticalSection.sizeof] critsec; | |
| 3773 * _d_criticalenter(critsec.ptr); | |
| 3774 * try { body } finally { _d_criticalexit(critsec.ptr); } | |
| 3775 */ | |
| 3776 Identifier *id = Lexer::uniqueId("__critsec"); | |
| 3777 Type *t = new TypeSArray(Type::tint8, new IntegerExp(PTRSIZE + os_critsecsize())); | |
| 3778 VarDeclaration *tmp = new VarDeclaration(loc, t, id, NULL); | |
| 3779 tmp->storage_class |= STCgshared | STCstatic; | |
| 3780 | |
| 3781 Statements *cs = new Statements(); | |
| 3782 cs->push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); | |
| 3783 | |
| 3784 FuncDeclaration *fdenter = FuncDeclaration::genCfunc(Type::tvoid, Id::criticalenter); | |
| 3785 Expression *e = new DotIdExp(loc, new VarExp(loc, tmp), Id::ptr); | |
| 3786 e = e->semantic(sc); | |
| 3787 e = new CallExp(loc, new VarExp(loc, fdenter), e); | |
| 3788 e->type = Type::tvoid; // do not run semantic on e | |
| 3789 cs->push(new ExpStatement(loc, e)); | |
| 3790 | |
| 3791 FuncDeclaration *fdexit = FuncDeclaration::genCfunc(Type::tvoid, Id::criticalexit); | |
| 3792 e = new DotIdExp(loc, new VarExp(loc, tmp), Id::ptr); | |
| 3793 e = e->semantic(sc); | |
| 3794 e = new CallExp(loc, new VarExp(loc, fdexit), e); | |
| 3795 e->type = Type::tvoid; // do not run semantic on e | |
| 3796 Statement *s = new ExpStatement(loc, e); | |
| 3797 s = new TryFinallyStatement(loc, body, s); | |
| 3798 cs->push(s); | |
| 3799 | |
| 3800 s = new CompoundStatement(loc, cs); | |
| 3801 return s->semantic(sc); | |
| 3802 } | |
| 3803 #endif | |
| 159 | 3804 if (body) |
| 309 | 3805 { |
|
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3806 Statement* oldScopeExit = sc->enclosingScopeExit; |
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|
3807 sc->enclosingScopeExit = this; |
|
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|
3808 body = body->semantic(sc); |
|
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|
3809 sc->enclosingScopeExit = oldScopeExit; |
| 309 | 3810 } |
| 159 | 3811 return this; |
| 3812 } | |
| 3813 | |
| 3814 int SynchronizedStatement::hasBreak() | |
| 3815 { | |
| 3816 return FALSE; //TRUE; | |
| 3817 } | |
| 3818 | |
| 3819 int SynchronizedStatement::hasContinue() | |
| 3820 { | |
| 3821 return FALSE; //TRUE; | |
| 3822 } | |
| 3823 | |
| 3824 int SynchronizedStatement::usesEH() | |
| 3825 { | |
| 3826 return TRUE; | |
| 3827 } | |
| 3828 | |
| 336 | 3829 int SynchronizedStatement::blockExit() |
| 3830 { | |
| 3831 return body ? body->blockExit() : BEfallthru; | |
| 3832 } | |
| 3833 | |
| 1587 | 3834 |
| 159 | 3835 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3836 { | |
| 3837 buf->writestring("synchronized"); | |
| 3838 if (exp) | |
| 3839 { buf->writebyte('('); | |
| 3840 exp->toCBuffer(buf, hgs); | |
| 3841 buf->writebyte(')'); | |
| 3842 } | |
| 3843 if (body) | |
| 3844 { | |
| 3845 buf->writebyte(' '); | |
| 3846 body->toCBuffer(buf, hgs); | |
| 3847 } | |
| 3848 } | |
| 3849 | |
| 3850 /******************************** WithStatement ***************************/ | |
| 3851 | |
| 3852 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 3853 : Statement(loc) | |
| 3854 { | |
| 3855 this->exp = exp; | |
| 3856 this->body = body; | |
| 3857 wthis = NULL; | |
| 3858 } | |
| 3859 | |
| 3860 Statement *WithStatement::syntaxCopy() | |
| 3861 { | |
| 3862 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 3863 return s; | |
| 3864 } | |
| 3865 | |
| 3866 Statement *WithStatement::semantic(Scope *sc) | |
| 3867 { ScopeDsymbol *sym; | |
| 3868 Initializer *init; | |
| 3869 | |
| 3870 //printf("WithStatement::semantic()\n"); | |
| 3871 exp = exp->semantic(sc); | |
| 3872 exp = resolveProperties(sc, exp); | |
| 3873 if (exp->op == TOKimport) | |
| 3874 { ScopeExp *es = (ScopeExp *)exp; | |
| 3875 | |
| 3876 sym = es->sds; | |
| 3877 } | |
| 3878 else if (exp->op == TOKtype) | |
| 3879 { TypeExp *es = (TypeExp *)exp; | |
| 3880 | |
| 3881 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 3882 if (!sym) | |
| 3883 { error("%s has no members", es->toChars()); | |
| 3884 body = body->semantic(sc); | |
| 3885 return this; | |
| 3886 } | |
| 3887 } | |
| 3888 else | |
| 3889 { Type *t = exp->type; | |
| 3890 | |
| 3891 assert(t); | |
| 3892 t = t->toBasetype(); | |
| 3893 if (t->isClassHandle()) | |
| 3894 { | |
| 3895 init = new ExpInitializer(loc, exp); | |
| 3896 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3897 wthis->semantic(sc); | |
| 3898 | |
| 3899 sym = new WithScopeSymbol(this); | |
| 3900 sym->parent = sc->scopesym; | |
| 3901 } | |
| 3902 else if (t->ty == Tstruct) | |
| 3903 { | |
| 3904 Expression *e = exp->addressOf(sc); | |
| 3905 init = new ExpInitializer(loc, e); | |
| 3906 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3907 wthis->semantic(sc); | |
| 3908 sym = new WithScopeSymbol(this); | |
| 3909 sym->parent = sc->scopesym; | |
| 3910 } | |
| 3911 else | |
| 3912 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3913 return NULL; | |
| 3914 } | |
| 3915 } | |
| 3916 sc = sc->push(sym); | |
| 3917 | |
| 3918 if (body) | |
| 3919 body = body->semantic(sc); | |
| 3920 | |
| 3921 sc->pop(); | |
| 3922 | |
| 3923 return this; | |
| 3924 } | |
| 3925 | |
| 3926 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3927 { | |
| 3928 buf->writestring("with ("); | |
| 3929 exp->toCBuffer(buf, hgs); | |
| 3930 buf->writestring(")\n"); | |
| 3931 if (body) | |
| 3932 body->toCBuffer(buf, hgs); | |
| 3933 } | |
| 3934 | |
| 3935 int WithStatement::usesEH() | |
| 3936 { | |
| 3937 return body ? body->usesEH() : 0; | |
| 3938 } | |
| 3939 | |
| 336 | 3940 int WithStatement::blockExit() |
| 3941 { | |
| 3942 int result = BEnone; | |
| 3943 if (exp->canThrow()) | |
| 3944 result = BEthrow; | |
| 3945 if (body) | |
| 3946 result |= body->blockExit(); | |
| 3947 else | |
| 3948 result |= BEfallthru; | |
| 3949 return result; | |
| 3950 } | |
| 3951 | |
| 1587 | 3952 |
| 159 | 3953 /******************************** TryCatchStatement ***************************/ |
| 3954 | |
| 3955 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3956 : Statement(loc) | |
| 3957 { | |
| 3958 this->body = body; | |
| 3959 this->catches = catches; | |
| 3960 } | |
| 3961 | |
| 3962 Statement *TryCatchStatement::syntaxCopy() | |
| 3963 { | |
| 3964 Array *a = new Array(); | |
| 3965 a->setDim(catches->dim); | |
| 3966 for (int i = 0; i < a->dim; i++) | |
| 3967 { Catch *c; | |
| 3968 | |
| 3969 c = (Catch *)catches->data[i]; | |
| 3970 c = c->syntaxCopy(); | |
| 3971 a->data[i] = c; | |
| 3972 } | |
| 3973 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3974 return s; | |
| 3975 } | |
| 3976 | |
| 3977 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3978 { | |
| 3979 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3980 | |
| 336 | 3981 /* Even if body is NULL, still do semantic analysis on catches |
| 3982 */ | |
| 3983 for (size_t i = 0; i < catches->dim; i++) | |
| 3984 { Catch *c = (Catch *)catches->data[i]; | |
| 159 | 3985 c->semantic(sc); |
| 3986 | |
| 3987 // Determine if current catch 'hides' any previous catches | |
| 336 | 3988 for (size_t j = 0; j < i; j++) |
| 159 | 3989 { Catch *cj = (Catch *)catches->data[j]; |
| 3990 char *si = c->loc.toChars(); | |
| 3991 char *sj = cj->loc.toChars(); | |
| 3992 | |
| 3993 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3994 error("catch at %s hides catch at %s", sj, si); | |
| 3995 } | |
| 3996 } | |
| 1587 | 3997 |
| 3998 if (!body || body->isEmpty()) | |
| 3999 { | |
| 4000 return NULL; | |
| 4001 } | |
| 159 | 4002 return this; |
| 4003 } | |
| 4004 | |
| 4005 int TryCatchStatement::hasBreak() | |
| 4006 { | |
| 4007 return FALSE; //TRUE; | |
| 4008 } | |
| 4009 | |
| 4010 int TryCatchStatement::usesEH() | |
| 4011 { | |
| 4012 return TRUE; | |
| 4013 } | |
| 4014 | |
| 336 | 4015 int TryCatchStatement::blockExit() |
| 1587 | 4016 { |
| 336 | 4017 assert(body); |
| 1587 | 4018 int result = body->blockExit(); |
| 336 | 4019 |
| 4020 for (size_t i = 0; i < catches->dim; i++) | |
| 4021 { | |
| 4022 Catch *c = (Catch *)catches->data[i]; | |
| 4023 result |= c->blockExit(); | |
| 4024 } | |
| 4025 return result; | |
| 4026 } | |
| 4027 | |
| 159 | 4028 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4029 { | |
| 4030 buf->writestring("try"); | |
| 4031 buf->writenl(); | |
| 4032 if (body) | |
| 4033 body->toCBuffer(buf, hgs); | |
| 336 | 4034 for (size_t i = 0; i < catches->dim; i++) |
| 159 | 4035 { |
| 4036 Catch *c = (Catch *)catches->data[i]; | |
| 4037 c->toCBuffer(buf, hgs); | |
| 4038 } | |
| 4039 } | |
| 4040 | |
| 4041 /******************************** Catch ***************************/ | |
| 4042 | |
| 4043 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 4044 { | |
| 4045 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 4046 this->loc = loc; | |
| 4047 this->type = t; | |
| 4048 this->ident = id; | |
| 4049 this->handler = handler; | |
| 4050 var = NULL; | |
| 4051 } | |
| 4052 | |
| 4053 Catch *Catch::syntaxCopy() | |
| 4054 { | |
| 4055 Catch *c = new Catch(loc, | |
| 4056 (type ? type->syntaxCopy() : NULL), | |
| 4057 ident, | |
| 4058 (handler ? handler->syntaxCopy() : NULL)); | |
| 4059 return c; | |
| 4060 } | |
| 4061 | |
| 4062 void Catch::semantic(Scope *sc) | |
| 4063 { ScopeDsymbol *sym; | |
| 4064 | |
| 4065 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 4066 | |
| 4067 #ifndef IN_GCC | |
|
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4068 if (sc->enclosingFinally) |
| 159 | 4069 { |
| 4070 /* This is because the _d_local_unwind() gets the stack munged | |
| 4071 * up on this. The workaround is to place any try-catches into | |
| 4072 * a separate function, and call that. | |
| 4073 * To fix, have the compiler automatically convert the finally | |
| 4074 * body into a nested function. | |
| 4075 */ | |
| 4076 error(loc, "cannot put catch statement inside finally block"); | |
| 4077 } | |
| 4078 #endif | |
| 4079 | |
| 4080 sym = new ScopeDsymbol(); | |
| 4081 sym->parent = sc->scopesym; | |
| 4082 sc = sc->push(sym); | |
| 4083 | |
| 4084 if (!type) | |
| 4085 type = new TypeIdentifier(0, Id::Object); | |
| 4086 type = type->semantic(loc, sc); | |
| 4087 if (!type->toBasetype()->isClassHandle()) | |
| 4088 error("can only catch class objects, not '%s'", type->toChars()); | |
| 4089 else if (ident) | |
| 4090 { | |
| 4091 var = new VarDeclaration(loc, type, ident, NULL); | |
| 4092 var->parent = sc->parent; | |
| 4093 sc->insert(var); | |
| 4094 } | |
| 4095 handler = handler->semantic(sc); | |
| 4096 | |
| 4097 sc->pop(); | |
| 4098 } | |
| 4099 | |
| 336 | 4100 int Catch::blockExit() |
| 4101 { | |
| 4102 return handler ? handler->blockExit() : BEfallthru; | |
| 4103 } | |
| 4104 | |
| 159 | 4105 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4106 { | |
| 4107 buf->writestring("catch"); | |
| 4108 if (type) | |
| 4109 { buf->writebyte('('); | |
| 4110 type->toCBuffer(buf, ident, hgs); | |
| 4111 buf->writebyte(')'); | |
| 4112 } | |
| 4113 buf->writenl(); | |
| 4114 buf->writebyte('{'); | |
| 4115 buf->writenl(); | |
| 336 | 4116 if (handler) |
| 4117 handler->toCBuffer(buf, hgs); | |
| 159 | 4118 buf->writebyte('}'); |
| 4119 buf->writenl(); | |
| 4120 } | |
| 4121 | |
| 4122 /****************************** TryFinallyStatement ***************************/ | |
| 4123 | |
| 4124 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 4125 : Statement(loc) | |
| 4126 { | |
| 4127 this->body = body; | |
| 4128 this->finalbody = finalbody; | |
| 4129 } | |
| 4130 | |
| 4131 Statement *TryFinallyStatement::syntaxCopy() | |
| 4132 { | |
| 4133 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 4134 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 4135 return s; | |
| 4136 } | |
| 4137 | |
| 4138 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 4139 { | |
| 4140 //printf("TryFinallyStatement::semantic()\n"); | |
| 4141 | |
|
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4142 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
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|
4143 sc->enclosingScopeExit = this; |
| 159 | 4144 body = body->semantic(sc); |
|
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|
4145 sc->enclosingScopeExit = oldScopeExit; |
| 159 | 4146 |
| 4147 sc = sc->push(); | |
|
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|
4148 sc->enclosingFinally = this; |
| 159 | 4149 sc->sbreak = NULL; |
| 4150 sc->scontinue = NULL; // no break or continue out of finally block | |
| 4151 finalbody = finalbody->semantic(sc); | |
| 4152 sc->pop(); | |
| 4153 return this; | |
| 4154 } | |
| 4155 | |
| 4156 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4157 { | |
| 4158 buf->printf("try\n{\n"); | |
| 4159 body->toCBuffer(buf, hgs); | |
| 4160 buf->printf("}\nfinally\n{\n"); | |
| 4161 finalbody->toCBuffer(buf, hgs); | |
| 4162 buf->writeByte('}'); | |
| 4163 buf->writenl(); | |
| 4164 } | |
| 4165 | |
| 4166 int TryFinallyStatement::hasBreak() | |
| 4167 { | |
| 4168 return FALSE; //TRUE; | |
| 4169 } | |
| 4170 | |
| 4171 int TryFinallyStatement::hasContinue() | |
| 4172 { | |
| 4173 return FALSE; //TRUE; | |
| 4174 } | |
| 4175 | |
| 4176 int TryFinallyStatement::usesEH() | |
| 4177 { | |
| 4178 return TRUE; | |
| 4179 } | |
| 4180 | |
| 336 | 4181 int TryFinallyStatement::blockExit() |
| 4182 { | |
|
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|
4183 if (body) |
|
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|
4184 return body->blockExit(); |
|
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|
4185 return BEfallthru; |
| 336 | 4186 } |
| 4187 | |
| 159 | 4188 |
| 4189 /****************************** OnScopeStatement ***************************/ | |
| 4190 | |
| 4191 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 4192 : Statement(loc) | |
| 4193 { | |
| 4194 this->tok = tok; | |
| 4195 this->statement = statement; | |
| 4196 } | |
| 4197 | |
| 4198 Statement *OnScopeStatement::syntaxCopy() | |
| 4199 { | |
| 4200 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 4201 tok, statement->syntaxCopy()); | |
| 4202 return s; | |
| 4203 } | |
| 4204 | |
| 4205 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 4206 { | |
| 4207 /* semantic is called on results of scopeCode() */ | |
| 4208 return this; | |
| 4209 } | |
| 4210 | |
| 336 | 4211 int OnScopeStatement::blockExit() |
| 4212 { // At this point, this statement is just an empty placeholder | |
| 4213 return BEfallthru; | |
| 4214 } | |
| 4215 | |
| 159 | 4216 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4217 { | |
| 4218 buf->writestring(Token::toChars(tok)); | |
| 4219 buf->writebyte(' '); | |
| 4220 statement->toCBuffer(buf, hgs); | |
| 4221 } | |
| 4222 | |
| 4223 int OnScopeStatement::usesEH() | |
| 4224 { | |
| 4225 return (tok != TOKon_scope_success); | |
| 4226 } | |
| 4227 | |
| 1587 | 4228 void OnScopeStatement::scopeCode(Scope *sc, Statement **sentry, Statement **sexception, Statement **sfinally) |
| 159 | 4229 { |
| 4230 //printf("OnScopeStatement::scopeCode()\n"); | |
| 4231 //print(); | |
| 4232 *sentry = NULL; | |
| 4233 *sexception = NULL; | |
| 4234 *sfinally = NULL; | |
| 4235 switch (tok) | |
| 4236 { | |
| 4237 case TOKon_scope_exit: | |
| 4238 *sfinally = statement; | |
| 4239 break; | |
| 4240 | |
| 4241 case TOKon_scope_failure: | |
| 4242 *sexception = statement; | |
| 4243 break; | |
| 4244 | |
| 4245 case TOKon_scope_success: | |
| 4246 { | |
| 4247 /* Create: | |
| 4248 * sentry: int x = 0; | |
| 4249 * sexception: x = 1; | |
| 4250 * sfinally: if (!x) statement; | |
| 4251 */ | |
|
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diff
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|
4252 Identifier *id = Lexer::uniqueId("__os"); |
| 159 | 4253 |
| 4254 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 4255 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 4256 *sentry = new DeclarationStatement(loc, v); | |
| 4257 | |
| 4258 Expression *e = new IntegerExp(1); | |
| 4259 e = new AssignExp(0, new VarExp(0, v), e); | |
| 4260 *sexception = new ExpStatement(0, e); | |
| 4261 | |
| 4262 e = new VarExp(0, v); | |
| 4263 e = new NotExp(0, e); | |
| 4264 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 4265 | |
| 4266 break; | |
| 4267 } | |
| 4268 | |
| 4269 default: | |
| 4270 assert(0); | |
| 4271 } | |
| 4272 } | |
| 4273 | |
| 4274 /******************************** ThrowStatement ***************************/ | |
| 4275 | |
| 4276 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 4277 : Statement(loc) | |
| 4278 { | |
| 4279 this->exp = exp; | |
| 4280 } | |
| 4281 | |
| 4282 Statement *ThrowStatement::syntaxCopy() | |
| 4283 { | |
| 4284 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 4285 return s; | |
| 4286 } | |
| 4287 | |
| 4288 Statement *ThrowStatement::semantic(Scope *sc) | |
| 4289 { | |
| 4290 //printf("ThrowStatement::semantic()\n"); | |
| 4291 | |
| 4292 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 4293 fd->hasReturnExp |= 2; | |
| 4294 | |
| 4295 if (sc->incontract) | |
| 4296 error("Throw statements cannot be in contracts"); | |
| 4297 exp = exp->semantic(sc); | |
| 4298 exp = resolveProperties(sc, exp); | |
| 4299 if (!exp->type->toBasetype()->isClassHandle()) | |
| 4300 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 4301 return this; | |
| 4302 } | |
| 4303 | |
| 336 | 4304 int ThrowStatement::blockExit() |
| 4305 { | |
| 4306 return BEthrow; // obviously | |
| 4307 } | |
| 4308 | |
| 1587 | 4309 |
| 159 | 4310 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4311 { | |
| 4312 buf->printf("throw "); | |
| 4313 exp->toCBuffer(buf, hgs); | |
| 4314 buf->writeByte(';'); | |
| 4315 buf->writenl(); | |
| 4316 } | |
| 4317 | |
| 4318 /******************************** VolatileStatement **************************/ | |
| 4319 | |
| 4320 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 4321 : Statement(loc) | |
| 4322 { | |
| 4323 this->statement = statement; | |
| 4324 } | |
| 4325 | |
| 4326 Statement *VolatileStatement::syntaxCopy() | |
| 4327 { | |
| 4328 VolatileStatement *s = new VolatileStatement(loc, | |
| 4329 statement ? statement->syntaxCopy() : NULL); | |
| 4330 return s; | |
| 4331 } | |
| 4332 | |
| 4333 Statement *VolatileStatement::semantic(Scope *sc) | |
| 4334 { | |
| 309 | 4335 if (statement) |
| 4336 { | |
|
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|
4337 Statement* oldScopeExit = sc->enclosingScopeExit; |
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4338 sc->enclosingScopeExit = this; |
|
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4339 statement = statement->semantic(sc); |
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4340 sc->enclosingScopeExit = oldScopeExit; |
| 309 | 4341 } |
| 159 | 4342 return this; |
| 4343 } | |
| 4344 | |
| 4345 Statements *VolatileStatement::flatten(Scope *sc) | |
| 4346 { | |
| 4347 Statements *a; | |
| 4348 | |
| 4349 a = statement ? statement->flatten(sc) : NULL; | |
| 4350 if (a) | |
| 4351 { for (int i = 0; i < a->dim; i++) | |
| 4352 { Statement *s = (Statement *)a->data[i]; | |
| 4353 | |
| 4354 s = new VolatileStatement(loc, s); | |
| 4355 a->data[i] = s; | |
| 4356 } | |
| 4357 } | |
| 4358 | |
| 4359 return a; | |
| 4360 } | |
| 4361 | |
| 336 | 4362 int VolatileStatement::blockExit() |
| 4363 { | |
| 4364 return statement ? statement->blockExit() : BEfallthru; | |
| 4365 } | |
| 4366 | |
| 1587 | 4367 |
| 159 | 4368 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4369 { | |
| 4370 buf->writestring("volatile"); | |
| 4371 if (statement) | |
| 4372 { if (statement->isScopeStatement()) | |
| 4373 buf->writenl(); | |
| 4374 else | |
| 4375 buf->writebyte(' '); | |
| 4376 statement->toCBuffer(buf, hgs); | |
| 4377 } | |
| 4378 } | |
| 4379 | |
| 4380 | |
| 4381 /******************************** GotoStatement ***************************/ | |
| 4382 | |
| 4383 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 4384 : Statement(loc) | |
| 4385 { | |
| 4386 this->ident = ident; | |
| 4387 this->label = NULL; | |
|
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4388 this->enclosingFinally = NULL; |
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|
4389 this->enclosingScopeExit = NULL; |
| 159 | 4390 } |
| 4391 | |
| 4392 Statement *GotoStatement::syntaxCopy() | |
| 4393 { | |
| 4394 GotoStatement *s = new GotoStatement(loc, ident); | |
| 4395 return s; | |
| 4396 } | |
| 4397 | |
| 4398 Statement *GotoStatement::semantic(Scope *sc) | |
| 4399 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 4400 | |
| 4401 //printf("GotoStatement::semantic()\n"); | |
|
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|
4402 enclosingFinally = sc->enclosingFinally; |
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|
4403 enclosingScopeExit = sc->enclosingScopeExit; |
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|
4404 |
| 159 | 4405 label = fd->searchLabel(ident); |
| 4406 if (!label->statement && sc->fes) | |
| 4407 { | |
| 4408 /* Either the goto label is forward referenced or it | |
| 4409 * is in the function that the enclosing foreach is in. | |
| 4410 * Can't know yet, so wrap the goto in a compound statement | |
| 4411 * so we can patch it later, and add it to a 'look at this later' | |
| 4412 * list. | |
| 4413 */ | |
| 4414 Statements *a = new Statements(); | |
| 4415 Statement *s; | |
| 4416 | |
| 4417 a->push(this); | |
| 4418 s = new CompoundStatement(loc, a); | |
| 4419 sc->fes->gotos.push(s); // 'look at this later' list | |
| 4420 return s; | |
| 4421 } | |
|
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|
4422 if (label->statement && label->statement->enclosingFinally != sc->enclosingFinally) |
| 159 | 4423 error("cannot goto in or out of finally block"); |
| 4424 return this; | |
| 4425 } | |
| 4426 | |
| 336 | 4427 int GotoStatement::blockExit() |
| 4428 { | |
| 4429 //printf("GotoStatement::blockExit(%p)\n", this); | |
| 4430 return BEgoto; | |
| 4431 } | |
| 4432 | |
| 1587 | 4433 |
| 159 | 4434 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 4435 { | |
| 4436 buf->writestring("goto "); | |
| 4437 buf->writestring(ident->toChars()); | |
| 4438 buf->writebyte(';'); | |
| 4439 buf->writenl(); | |
| 4440 } | |
| 4441 | |
| 4442 /******************************** LabelStatement ***************************/ | |
| 4443 | |
| 4444 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 4445 : Statement(loc) | |
| 4446 { | |
| 4447 this->ident = ident; | |
| 4448 this->statement = statement; | |
|
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|
4449 this->enclosingFinally = NULL; |
|
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4450 this->enclosingScopeExit = NULL; |
| 159 | 4451 this->lblock = NULL; |
| 4452 this->isReturnLabel = 0; | |
|
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|
4453 this->asmLabel = false; |
| 159 | 4454 } |
| 4455 | |
| 4456 Statement *LabelStatement::syntaxCopy() | |
| 4457 { | |
| 4458 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 4459 return s; | |
| 4460 } | |
| 4461 | |
| 4462 Statement *LabelStatement::semantic(Scope *sc) | |
| 4463 { LabelDsymbol *ls; | |
| 4464 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 4465 | |
| 4466 //printf("LabelStatement::semantic()\n"); | |
| 4467 ls = fd->searchLabel(ident); | |
| 4468 if (ls->statement) | |
| 4469 error("Label '%s' already defined", ls->toChars()); | |
| 4470 else | |
| 4471 ls->statement = this; | |
|
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4472 |
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4473 enclosingFinally = sc->enclosingFinally; |
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4474 enclosingScopeExit = sc->enclosingScopeExit; |
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4475 |
| 159 | 4476 sc = sc->push(); |
| 4477 sc->scopesym = sc->enclosing->scopesym; | |
| 4478 sc->callSuper |= CSXlabel; | |
| 4479 sc->slabel = this; | |
| 4480 if (statement) | |
| 4481 statement = statement->semantic(sc); | |
| 4482 sc->pop(); | |
|
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4483 |
|
664
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|
4484 // LDC put in labmap |
|
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|
4485 fd->labmap[ident->toChars()] = this; |
|
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4486 |
| 159 | 4487 return this; |
| 4488 } | |
| 4489 | |
| 4490 Statements *LabelStatement::flatten(Scope *sc) | |
| 4491 { | |
| 4492 Statements *a = NULL; | |
| 4493 | |
| 4494 if (statement) | |
| 4495 { | |
| 4496 a = statement->flatten(sc); | |
| 4497 if (a) | |
| 4498 { | |
| 4499 if (!a->dim) | |
| 4500 { | |
| 4501 a->push(new ExpStatement(loc, NULL)); | |
| 4502 } | |
| 4503 Statement *s = (Statement *)a->data[0]; | |
| 4504 | |
| 4505 s = new LabelStatement(loc, ident, s); | |
| 4506 a->data[0] = s; | |
| 4507 } | |
| 4508 } | |
| 4509 | |
| 4510 return a; | |
| 4511 } | |
| 4512 | |
| 4513 | |
| 4514 int LabelStatement::usesEH() | |
| 4515 { | |
| 4516 return statement ? statement->usesEH() : FALSE; | |
| 4517 } | |
| 4518 | |
| 336 | 4519 int LabelStatement::blockExit() |
| 4520 { | |
| 4521 //printf("LabelStatement::blockExit(%p)\n", this); | |
| 4522 return statement ? statement->blockExit() : BEfallthru; | |
| 4523 } | |
| 4524 | |
| 1587 | 4525 |
| 159 | 4526 int LabelStatement::comeFrom() |
| 4527 { | |
| 4528 //printf("LabelStatement::comeFrom()\n"); | |
| 4529 return TRUE; | |
| 4530 } | |
| 4531 | |
| 4532 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 4533 { | |
| 4534 buf->writestring(ident->toChars()); | |
| 4535 buf->writebyte(':'); | |
| 4536 buf->writenl(); | |
| 4537 if (statement) | |
| 4538 statement->toCBuffer(buf, hgs); | |
| 4539 } | |
| 4540 | |
| 4541 | |
| 4542 /******************************** LabelDsymbol ***************************/ | |
| 4543 | |
| 4544 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 4545 : Dsymbol(ident) | |
| 4546 { | |
| 4547 statement = NULL; | |
| 4548 } | |
| 4549 | |
| 4550 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 4551 { | |
| 4552 return this; | |
| 4553 } |