Mercurial > projects > ldc
annotate dmd/statement.c @ 1367:8026319762be
Merged DMD 1.045 !!!
| author | Tomas Lindquist Olsen <tomas.l.olsen gmail com> |
|---|---|
| date | Sat, 16 May 2009 22:21:31 +0200 |
| parents | 78038e540342 |
| children | 17268b0a3ab0 |
| 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 |
| 32 /******************************** Statement ***************************/ | |
| 33 | |
| 34 Statement::Statement(Loc loc) | |
| 35 : loc(loc) | |
| 36 { | |
| 37 #ifdef _DH | |
| 38 // If this is an in{} contract scope statement (skip for determining | |
| 39 // inlineStatus of a function body for header content) | |
| 40 incontract = 0; | |
| 41 #endif | |
| 42 } | |
| 43 | |
| 44 Statement *Statement::syntaxCopy() | |
| 45 { | |
| 46 assert(0); | |
| 47 return NULL; | |
| 48 } | |
| 49 | |
| 50 void Statement::print() | |
| 51 { | |
| 52 fprintf(stdmsg, "%s\n", toChars()); | |
| 53 fflush(stdmsg); | |
| 54 } | |
| 55 | |
| 56 char *Statement::toChars() | |
| 57 { OutBuffer *buf; | |
| 58 HdrGenState hgs; | |
| 59 | |
| 60 buf = new OutBuffer(); | |
| 61 toCBuffer(buf, &hgs); | |
| 62 return buf->toChars(); | |
| 63 } | |
| 64 | |
| 65 void Statement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 66 { | |
| 67 buf->printf("Statement::toCBuffer()"); | |
| 68 buf->writenl(); | |
| 69 } | |
| 70 | |
| 71 Statement *Statement::semantic(Scope *sc) | |
| 72 { | |
| 73 return this; | |
| 74 } | |
| 75 | |
| 76 // Same as semantic(), but do create a new scope | |
| 77 | |
| 78 Statement *Statement::semanticScope(Scope *sc, Statement *sbreak, Statement *scontinue) | |
| 79 { Scope *scd; | |
| 80 Statement *s; | |
| 81 | |
| 82 scd = sc->push(); | |
| 83 if (sbreak) | |
| 84 scd->sbreak = sbreak; | |
| 85 if (scontinue) | |
| 86 scd->scontinue = scontinue; | |
| 87 s = semantic(scd); | |
| 88 scd->pop(); | |
| 89 return s; | |
| 90 } | |
| 91 | |
| 92 void Statement::error(const char *format, ...) | |
| 93 { | |
| 94 va_list ap; | |
| 95 va_start(ap, format); | |
| 96 ::verror(loc, format, ap); | |
| 97 va_end( ap ); | |
| 98 } | |
| 99 | |
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100 void Statement::warning(const char *format, ...) |
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101 { |
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102 if (global.params.warnings && !global.gag) |
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103 { |
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104 va_list ap; |
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105 va_start(ap, format); |
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106 ::vwarning(loc, format, ap); |
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107 va_end( ap ); |
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108 } |
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109 } |
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110 |
| 159 | 111 int Statement::hasBreak() |
| 112 { | |
| 113 //printf("Statement::hasBreak()\n"); | |
| 114 return FALSE; | |
| 115 } | |
| 116 | |
| 117 int Statement::hasContinue() | |
| 118 { | |
| 119 return FALSE; | |
| 120 } | |
| 121 | |
| 122 // TRUE if statement uses exception handling | |
| 123 | |
| 124 int Statement::usesEH() | |
| 125 { | |
| 126 return FALSE; | |
| 127 } | |
| 128 | |
| 336 | 129 /* Only valid after semantic analysis |
| 130 */ | |
| 131 int Statement::blockExit() | |
| 132 { | |
| 133 printf("Statement::blockExit(%p)\n", this); | |
| 134 printf("%s\n", toChars()); | |
| 135 assert(0); | |
| 136 return BEany; | |
| 137 } | |
| 138 | |
| 159 | 139 // TRUE if statement 'comes from' somewhere else, like a goto |
| 140 | |
| 141 int Statement::comeFrom() | |
| 142 { | |
| 143 //printf("Statement::comeFrom()\n"); | |
| 144 return FALSE; | |
| 145 } | |
| 146 | |
| 147 /**************************************** | |
| 148 * If this statement has code that needs to run in a finally clause | |
| 149 * at the end of the current scope, return that code in the form of | |
| 150 * a Statement. | |
| 151 * Output: | |
| 152 * *sentry code executed upon entry to the scope | |
| 153 * *sexception code executed upon exit from the scope via exception | |
| 154 * *sfinally code executed in finally block | |
| 155 */ | |
| 156 | |
| 157 void Statement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 158 { | |
| 159 //printf("Statement::scopeCode()\n"); | |
| 160 //print(); | |
| 161 *sentry = NULL; | |
| 162 *sexception = NULL; | |
| 163 *sfinally = NULL; | |
| 164 } | |
| 165 | |
| 166 /********************************* | |
| 167 * Flatten out the scope by presenting the statement | |
| 168 * as an array of statements. | |
| 169 * Returns NULL if no flattening necessary. | |
| 170 */ | |
| 171 | |
| 172 Statements *Statement::flatten(Scope *sc) | |
| 173 { | |
| 174 return NULL; | |
| 175 } | |
| 176 | |
| 177 | |
| 178 /******************************** ExpStatement ***************************/ | |
| 179 | |
| 180 ExpStatement::ExpStatement(Loc loc, Expression *exp) | |
| 181 : Statement(loc) | |
| 182 { | |
| 183 this->exp = exp; | |
| 184 } | |
| 185 | |
| 186 Statement *ExpStatement::syntaxCopy() | |
| 187 { | |
| 188 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 189 ExpStatement *es = new ExpStatement(loc, e); | |
| 190 return es; | |
| 191 } | |
| 192 | |
| 193 void ExpStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 194 { | |
| 195 if (exp) | |
| 196 exp->toCBuffer(buf, hgs); | |
| 197 buf->writeByte(';'); | |
| 198 if (!hgs->FLinit.init) | |
| 199 buf->writenl(); | |
| 200 } | |
| 201 | |
| 202 Statement *ExpStatement::semantic(Scope *sc) | |
| 203 { | |
| 204 if (exp) | |
| 205 { | |
| 206 //printf("ExpStatement::semantic() %s\n", exp->toChars()); | |
| 207 exp = exp->semantic(sc); | |
| 208 exp = resolveProperties(sc, exp); | |
| 209 exp->checkSideEffect(0); | |
| 210 exp = exp->optimize(0); | |
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211 if (exp->op == TOKdeclaration && !isDeclarationStatement()) |
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212 { Statement *s = new DeclarationStatement(loc, exp); |
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213 return s; |
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214 } |
| 159 | 215 //exp = exp->optimize(isDeclarationStatement() ? WANTvalue : 0); |
| 216 } | |
| 217 return this; | |
| 218 } | |
| 219 | |
| 336 | 220 int ExpStatement::blockExit() |
| 221 { int result = BEfallthru; | |
| 222 | |
| 223 if (exp) | |
| 224 { | |
| 225 if (exp->op == TOKhalt) | |
| 226 return BEhalt; | |
| 227 if (exp->op == TOKassert) | |
| 228 { AssertExp *a = (AssertExp *)exp; | |
| 229 | |
| 230 if (a->e1->isBool(FALSE)) // if it's an assert(0) | |
| 231 return BEhalt; | |
| 232 } | |
| 233 if (exp->canThrow()) | |
| 234 result |= BEthrow; | |
| 235 } | |
| 236 return result; | |
| 237 } | |
| 238 | |
| 159 | 239 |
| 240 /******************************** CompileStatement ***************************/ | |
| 241 | |
| 242 CompileStatement::CompileStatement(Loc loc, Expression *exp) | |
| 243 : Statement(loc) | |
| 244 { | |
| 245 this->exp = exp; | |
| 246 } | |
| 247 | |
| 248 Statement *CompileStatement::syntaxCopy() | |
| 249 { | |
| 250 Expression *e = exp->syntaxCopy(); | |
| 251 CompileStatement *es = new CompileStatement(loc, e); | |
| 252 return es; | |
| 253 } | |
| 254 | |
| 255 void CompileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 256 { | |
| 257 buf->writestring("mixin("); | |
| 258 exp->toCBuffer(buf, hgs); | |
| 259 buf->writestring(");"); | |
| 260 if (!hgs->FLinit.init) | |
| 261 buf->writenl(); | |
| 262 } | |
| 263 | |
| 336 | 264 Statements *CompileStatement::flatten(Scope *sc) |
| 159 | 265 { |
| 336 | 266 //printf("CompileStatement::flatten() %s\n", exp->toChars()); |
| 159 | 267 exp = exp->semantic(sc); |
| 268 exp = resolveProperties(sc, exp); | |
| 269 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 270 if (exp->op != TOKstring) | |
| 271 { error("argument to mixin must be a string, not (%s)", exp->toChars()); | |
| 336 | 272 return NULL; |
| 159 | 273 } |
| 274 StringExp *se = (StringExp *)exp; | |
| 275 se = se->toUTF8(sc); | |
| 276 Parser p(sc->module, (unsigned char *)se->string, se->len, 0); | |
| 277 p.loc = loc; | |
| 278 p.nextToken(); | |
| 279 | |
| 336 | 280 Statements *a = new Statements(); |
| 159 | 281 while (p.token.value != TOKeof) |
| 282 { | |
| 283 Statement *s = p.parseStatement(PSsemi | PScurlyscope); | |
| 336 | 284 a->push(s); |
| 159 | 285 } |
| 336 | 286 return a; |
| 287 } | |
| 288 | |
| 289 Statement *CompileStatement::semantic(Scope *sc) | |
| 290 { | |
| 291 //printf("CompileStatement::semantic() %s\n", exp->toChars()); | |
| 292 Statements *a = flatten(sc); | |
| 293 if (!a) | |
| 294 return NULL; | |
| 295 Statement *s = new CompoundStatement(loc, a); | |
| 159 | 296 return s->semantic(sc); |
| 297 } | |
| 298 | |
| 299 | |
| 300 /******************************** DeclarationStatement ***************************/ | |
| 301 | |
| 302 DeclarationStatement::DeclarationStatement(Loc loc, Dsymbol *declaration) | |
| 303 : ExpStatement(loc, new DeclarationExp(loc, declaration)) | |
| 304 { | |
| 305 } | |
| 306 | |
| 307 DeclarationStatement::DeclarationStatement(Loc loc, Expression *exp) | |
| 308 : ExpStatement(loc, exp) | |
| 309 { | |
| 310 } | |
| 311 | |
| 312 Statement *DeclarationStatement::syntaxCopy() | |
| 313 { | |
| 314 DeclarationStatement *ds = new DeclarationStatement(loc, exp->syntaxCopy()); | |
| 315 return ds; | |
| 316 } | |
| 317 | |
| 318 void DeclarationStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 319 { | |
| 320 //printf("DeclarationStatement::scopeCode()\n"); | |
| 321 //print(); | |
| 322 | |
| 323 *sentry = NULL; | |
| 324 *sexception = NULL; | |
| 325 *sfinally = NULL; | |
| 326 | |
| 327 if (exp) | |
| 328 { | |
| 329 if (exp->op == TOKdeclaration) | |
| 330 { | |
| 331 DeclarationExp *de = (DeclarationExp *)(exp); | |
| 332 VarDeclaration *v = de->declaration->isVarDeclaration(); | |
| 333 if (v) | |
| 334 { Expression *e; | |
| 335 | |
| 336 e = v->callAutoDtor(); | |
| 337 if (e) | |
| 338 { | |
| 339 //printf("dtor is: "); e->print(); | |
| 340 *sfinally = new ExpStatement(loc, e); | |
| 341 } | |
| 342 } | |
| 343 } | |
| 344 } | |
| 345 } | |
| 346 | |
| 347 void DeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 348 { | |
| 349 exp->toCBuffer(buf, hgs); | |
| 350 } | |
| 351 | |
| 352 | |
| 353 /******************************** CompoundStatement ***************************/ | |
| 354 | |
| 355 CompoundStatement::CompoundStatement(Loc loc, Statements *s) | |
| 356 : Statement(loc) | |
| 357 { | |
| 358 statements = s; | |
| 359 } | |
| 360 | |
| 361 CompoundStatement::CompoundStatement(Loc loc, Statement *s1, Statement *s2) | |
| 362 : Statement(loc) | |
| 363 { | |
| 364 statements = new Statements(); | |
| 365 statements->reserve(2); | |
| 366 statements->push(s1); | |
| 367 statements->push(s2); | |
| 368 } | |
| 369 | |
| 370 Statement *CompoundStatement::syntaxCopy() | |
| 371 { | |
| 372 Statements *a = new Statements(); | |
| 373 a->setDim(statements->dim); | |
| 374 for (size_t i = 0; i < statements->dim; i++) | |
| 375 { Statement *s = (Statement *)statements->data[i]; | |
| 376 if (s) | |
| 377 s = s->syntaxCopy(); | |
| 378 a->data[i] = s; | |
| 379 } | |
| 380 CompoundStatement *cs = new CompoundStatement(loc, a); | |
| 381 return cs; | |
| 382 } | |
| 383 | |
| 384 | |
| 385 Statement *CompoundStatement::semantic(Scope *sc) | |
| 386 { Statement *s; | |
| 387 | |
| 388 //printf("CompoundStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 389 | |
| 390 for (size_t i = 0; i < statements->dim; ) | |
| 391 { | |
| 392 s = (Statement *) statements->data[i]; | |
| 393 if (s) | |
| 394 { Statements *a = s->flatten(sc); | |
| 395 | |
| 396 if (a) | |
| 397 { | |
| 398 statements->remove(i); | |
| 399 statements->insert(i, a); | |
| 400 continue; | |
| 401 } | |
| 402 s = s->semantic(sc); | |
| 403 statements->data[i] = s; | |
| 404 if (s) | |
| 405 { | |
| 406 Statement *sentry; | |
| 407 Statement *sexception; | |
| 408 Statement *sfinally; | |
| 409 | |
| 410 s->scopeCode(&sentry, &sexception, &sfinally); | |
| 411 if (sentry) | |
| 412 { | |
| 413 sentry = sentry->semantic(sc); | |
| 414 statements->data[i] = sentry; | |
| 415 } | |
| 416 if (sexception) | |
| 417 { | |
| 418 if (i + 1 == statements->dim && !sfinally) | |
| 419 { | |
| 420 #if 1 | |
| 421 sexception = sexception->semantic(sc); | |
| 422 #else | |
| 423 statements->push(sexception); | |
| 424 if (sfinally) | |
| 425 // Assume sexception does not throw | |
| 426 statements->push(sfinally); | |
| 427 #endif | |
| 428 } | |
| 429 else | |
| 430 { | |
| 431 /* Rewrite: | |
| 432 * s; s1; s2; | |
| 433 * As: | |
| 434 * s; | |
| 435 * try { s1; s2; } | |
| 436 * catch (Object __o) | |
| 437 * { sexception; throw __o; } | |
| 438 */ | |
| 439 Statement *body; | |
| 440 Statements *a = new Statements(); | |
| 441 | |
| 442 for (int j = i + 1; j < statements->dim; j++) | |
| 443 { | |
| 444 a->push(statements->data[j]); | |
| 445 } | |
| 446 body = new CompoundStatement(0, a); | |
| 447 body = new ScopeStatement(0, body); | |
| 448 | |
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449 Identifier *id = Lexer::uniqueId("__o"); |
| 159 | 450 |
| 451 Statement *handler = new ThrowStatement(0, new IdentifierExp(0, id)); | |
| 452 handler = new CompoundStatement(0, sexception, handler); | |
| 453 | |
| 454 Array *catches = new Array(); | |
| 455 Catch *ctch = new Catch(0, NULL, id, handler); | |
| 456 catches->push(ctch); | |
| 457 s = new TryCatchStatement(0, body, catches); | |
| 458 | |
| 459 if (sfinally) | |
| 460 s = new TryFinallyStatement(0, s, sfinally); | |
| 461 s = s->semantic(sc); | |
| 462 statements->setDim(i + 1); | |
| 463 statements->push(s); | |
| 464 break; | |
| 465 } | |
| 466 } | |
| 467 else if (sfinally) | |
| 468 { | |
| 469 if (0 && i + 1 == statements->dim) | |
| 470 { | |
| 471 statements->push(sfinally); | |
| 472 } | |
| 473 else | |
| 474 { | |
| 475 /* Rewrite: | |
| 476 * s; s1; s2; | |
| 477 * As: | |
| 478 * s; try { s1; s2; } finally { sfinally; } | |
| 479 */ | |
| 480 Statement *body; | |
| 481 Statements *a = new Statements(); | |
| 482 | |
| 483 for (int j = i + 1; j < statements->dim; j++) | |
| 484 { | |
| 485 a->push(statements->data[j]); | |
| 486 } | |
| 487 body = new CompoundStatement(0, a); | |
| 488 s = new TryFinallyStatement(0, body, sfinally); | |
| 489 s = s->semantic(sc); | |
| 490 statements->setDim(i + 1); | |
| 491 statements->push(s); | |
| 492 break; | |
| 493 } | |
| 494 } | |
| 495 } | |
| 496 } | |
| 497 i++; | |
| 498 } | |
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499 if (statements->dim == 1 && !isAsmBlockStatement()) |
| 336 | 500 { |
| 501 return (Statement *)statements->data[0]; | |
| 502 } | |
| 159 | 503 return this; |
| 504 } | |
| 505 | |
| 506 Statements *CompoundStatement::flatten(Scope *sc) | |
| 507 { | |
| 508 return statements; | |
| 509 } | |
| 510 | |
| 511 ReturnStatement *CompoundStatement::isReturnStatement() | |
| 336 | 512 { |
| 159 | 513 ReturnStatement *rs = NULL; |
| 514 | |
| 336 | 515 for (int i = 0; i < statements->dim; i++) |
| 516 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 517 if (s) |
| 518 { | |
| 519 rs = s->isReturnStatement(); | |
| 520 if (rs) | |
| 521 break; | |
| 522 } | |
| 523 } | |
| 524 return rs; | |
| 525 } | |
| 526 | |
| 527 void CompoundStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 336 | 528 { |
| 529 for (int i = 0; i < statements->dim; i++) | |
| 530 { Statement *s = (Statement *) statements->data[i]; | |
| 159 | 531 if (s) |
| 532 s->toCBuffer(buf, hgs); | |
| 533 } | |
| 534 } | |
| 535 | |
| 536 int CompoundStatement::usesEH() | |
| 537 { | |
| 538 for (int i = 0; i < statements->dim; i++) | |
| 336 | 539 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 540 if (s && s->usesEH()) |
| 541 return TRUE; | |
| 542 } | |
| 543 return FALSE; | |
| 544 } | |
| 545 | |
| 336 | 546 int CompoundStatement::blockExit() |
| 547 { | |
| 548 //printf("CompoundStatement::blockExit(%p) %d\n", this, statements->dim); | |
| 549 int result = BEfallthru; | |
| 550 for (size_t i = 0; i < statements->dim; i++) | |
| 551 { Statement *s = (Statement *) statements->data[i]; | |
| 552 if (s) | |
| 553 { | |
| 554 //printf("result = x%x\n", result); | |
| 555 //printf("%s\n", s->toChars()); | |
| 556 if (!(result & BEfallthru) && !s->comeFrom()) | |
| 557 { | |
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558 s->warning("statement is not reachable"); |
| 336 | 559 } |
| 560 | |
| 561 result &= ~BEfallthru; | |
| 562 result |= s->blockExit(); | |
| 563 } | |
| 564 } | |
| 565 return result; | |
| 566 } | |
| 567 | |
| 159 | 568 int CompoundStatement::comeFrom() |
| 569 { int comefrom = FALSE; | |
| 570 | |
| 571 //printf("CompoundStatement::comeFrom()\n"); | |
| 572 for (int i = 0; i < statements->dim; i++) | |
| 573 { Statement *s = (Statement *)statements->data[i]; | |
| 574 | |
| 575 if (!s) | |
| 576 continue; | |
| 577 | |
| 578 comefrom |= s->comeFrom(); | |
| 579 } | |
| 580 return comefrom; | |
| 581 } | |
| 582 | |
| 583 | |
|
1195
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584 /******************************** CompoundDeclarationStatement ***************************/ |
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585 |
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586 CompoundDeclarationStatement::CompoundDeclarationStatement(Loc loc, Statements *s) |
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587 : CompoundStatement(loc, s) |
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588 { |
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589 statements = s; |
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590 } |
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591 |
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592 Statement *CompoundDeclarationStatement::syntaxCopy() |
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593 { |
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594 Statements *a = new Statements(); |
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595 a->setDim(statements->dim); |
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596 for (size_t i = 0; i < statements->dim; i++) |
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597 { Statement *s = (Statement *)statements->data[i]; |
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598 if (s) |
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599 s = s->syntaxCopy(); |
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600 a->data[i] = s; |
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601 } |
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602 CompoundDeclarationStatement *cs = new CompoundDeclarationStatement(loc, a); |
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603 return cs; |
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604 } |
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605 |
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606 void CompoundDeclarationStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
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607 { |
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608 int nwritten = 0; |
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609 for (int i = 0; i < statements->dim; i++) |
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610 { Statement *s = (Statement *) statements->data[i]; |
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611 if (s) |
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612 { DeclarationStatement *ds = s->isDeclarationStatement(); |
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613 assert(ds); |
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614 DeclarationExp *de = (DeclarationExp *)ds->exp; |
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615 assert(de->op == TOKdeclaration); |
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616 Declaration *d = de->declaration->isDeclaration(); |
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617 assert(d); |
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618 VarDeclaration *v = d->isVarDeclaration(); |
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619 if (v) |
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620 { |
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621 /* This essentially copies the part of VarDeclaration::toCBuffer() |
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622 * that does not print the type. |
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623 * Should refactor this. |
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624 */ |
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625 if (nwritten) |
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626 { |
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627 buf->writeByte(','); |
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628 buf->writestring(v->ident->toChars()); |
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629 } |
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630 else |
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631 { |
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632 StorageClassDeclaration::stcToCBuffer(buf, v->storage_class); |
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633 if (v->type) |
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634 v->type->toCBuffer(buf, v->ident, hgs); |
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635 else |
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636 buf->writestring(v->ident->toChars()); |
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637 } |
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638 |
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639 if (v->init) |
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640 { buf->writestring(" = "); |
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641 #if DMDV2 |
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642 ExpInitializer *ie = v->init->isExpInitializer(); |
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643 if (ie && (ie->exp->op == TOKconstruct || ie->exp->op == TOKblit)) |
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644 ((AssignExp *)ie->exp)->e2->toCBuffer(buf, hgs); |
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645 else |
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646 #endif |
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647 v->init->toCBuffer(buf, hgs); |
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648 } |
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649 } |
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650 else |
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651 d->toCBuffer(buf, hgs); |
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652 nwritten++; |
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653 } |
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654 } |
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655 buf->writeByte(';'); |
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656 if (!hgs->FLinit.init) |
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657 buf->writenl(); |
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658 } |
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|
659 |
| 159 | 660 /**************************** UnrolledLoopStatement ***************************/ |
| 661 | |
| 662 UnrolledLoopStatement::UnrolledLoopStatement(Loc loc, Statements *s) | |
| 663 : Statement(loc) | |
| 664 { | |
| 665 statements = s; | |
| 666 } | |
| 667 | |
| 668 Statement *UnrolledLoopStatement::syntaxCopy() | |
| 669 { | |
| 670 Statements *a = new Statements(); | |
| 671 a->setDim(statements->dim); | |
| 672 for (size_t i = 0; i < statements->dim; i++) | |
| 673 { Statement *s = (Statement *)statements->data[i]; | |
| 674 if (s) | |
| 675 s = s->syntaxCopy(); | |
| 676 a->data[i] = s; | |
| 677 } | |
| 678 UnrolledLoopStatement *cs = new UnrolledLoopStatement(loc, a); | |
| 679 return cs; | |
| 680 } | |
| 681 | |
| 682 | |
| 683 Statement *UnrolledLoopStatement::semantic(Scope *sc) | |
| 684 { | |
| 685 //printf("UnrolledLoopStatement::semantic(this = %p, sc = %p)\n", this, sc); | |
| 686 | |
| 687 sc->noctor++; | |
| 688 Scope *scd = sc->push(); | |
| 689 scd->sbreak = this; | |
| 690 scd->scontinue = this; | |
| 691 | |
| 692 for (size_t i = 0; i < statements->dim; i++) | |
| 693 { | |
| 694 Statement *s = (Statement *) statements->data[i]; | |
| 695 if (s) | |
| 696 { | |
| 697 s = s->semantic(scd); | |
| 698 statements->data[i] = s; | |
| 699 } | |
| 700 } | |
| 701 | |
| 702 scd->pop(); | |
| 703 sc->noctor--; | |
| 704 return this; | |
| 705 } | |
| 706 | |
| 707 void UnrolledLoopStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 708 { | |
| 709 buf->writestring("unrolled {"); | |
| 710 buf->writenl(); | |
| 711 | |
| 712 for (size_t i = 0; i < statements->dim; i++) | |
| 713 { Statement *s; | |
| 714 | |
| 715 s = (Statement *) statements->data[i]; | |
| 716 if (s) | |
| 717 s->toCBuffer(buf, hgs); | |
| 718 } | |
| 719 | |
| 720 buf->writeByte('}'); | |
| 721 buf->writenl(); | |
| 722 } | |
| 723 | |
| 724 int UnrolledLoopStatement::hasBreak() | |
| 725 { | |
| 726 return TRUE; | |
| 727 } | |
| 728 | |
| 729 int UnrolledLoopStatement::hasContinue() | |
| 730 { | |
| 731 return TRUE; | |
| 732 } | |
| 733 | |
| 734 int UnrolledLoopStatement::usesEH() | |
| 735 { | |
| 736 for (size_t i = 0; i < statements->dim; i++) | |
| 336 | 737 { Statement *s = (Statement *) statements->data[i]; |
| 159 | 738 if (s && s->usesEH()) |
| 739 return TRUE; | |
| 740 } | |
| 741 return FALSE; | |
| 742 } | |
| 743 | |
| 336 | 744 int UnrolledLoopStatement::blockExit() |
| 745 { | |
| 746 int result = BEfallthru; | |
| 747 for (size_t i = 0; i < statements->dim; i++) | |
| 748 { Statement *s = (Statement *) statements->data[i]; | |
| 749 if (s) | |
| 750 { | |
| 751 int r = s->blockExit(); | |
| 752 result |= r & ~(BEbreak | BEcontinue); | |
| 753 } | |
| 754 } | |
| 755 return result; | |
| 756 } | |
| 757 | |
| 159 | 758 int UnrolledLoopStatement::comeFrom() |
| 759 { int comefrom = FALSE; | |
| 760 | |
| 761 //printf("UnrolledLoopStatement::comeFrom()\n"); | |
| 762 for (size_t i = 0; i < statements->dim; i++) | |
| 763 { Statement *s = (Statement *)statements->data[i]; | |
| 764 | |
| 765 if (!s) | |
| 766 continue; | |
| 767 | |
| 768 comefrom |= s->comeFrom(); | |
| 769 } | |
| 770 return comefrom; | |
| 771 } | |
| 772 | |
| 773 | |
| 774 /******************************** ScopeStatement ***************************/ | |
| 775 | |
| 776 ScopeStatement::ScopeStatement(Loc loc, Statement *s) | |
| 777 : Statement(loc) | |
| 778 { | |
| 779 this->statement = s; | |
| 780 } | |
| 781 | |
| 782 Statement *ScopeStatement::syntaxCopy() | |
| 783 { | |
| 784 Statement *s; | |
| 785 | |
| 786 s = statement ? statement->syntaxCopy() : NULL; | |
| 787 s = new ScopeStatement(loc, s); | |
| 788 return s; | |
| 789 } | |
| 790 | |
| 791 | |
| 792 Statement *ScopeStatement::semantic(Scope *sc) | |
| 793 { ScopeDsymbol *sym; | |
| 794 | |
| 795 //printf("ScopeStatement::semantic(sc = %p)\n", sc); | |
| 796 if (statement) | |
| 797 { Statements *a; | |
| 798 | |
| 799 sym = new ScopeDsymbol(); | |
| 800 sym->parent = sc->scopesym; | |
| 801 sc = sc->push(sym); | |
| 802 | |
| 803 a = statement->flatten(sc); | |
| 804 if (a) | |
| 805 { | |
| 806 statement = new CompoundStatement(loc, a); | |
| 807 } | |
| 808 | |
| 809 statement = statement->semantic(sc); | |
| 810 if (statement) | |
| 811 { | |
| 812 Statement *sentry; | |
| 813 Statement *sexception; | |
| 814 Statement *sfinally; | |
| 815 | |
| 816 statement->scopeCode(&sentry, &sexception, &sfinally); | |
| 817 if (sfinally) | |
| 818 { | |
| 819 //printf("adding sfinally\n"); | |
| 820 statement = new CompoundStatement(loc, statement, sfinally); | |
| 821 } | |
| 822 } | |
| 823 | |
| 824 sc->pop(); | |
| 825 } | |
| 826 return this; | |
| 827 } | |
| 828 | |
| 829 int ScopeStatement::hasBreak() | |
| 830 { | |
| 831 //printf("ScopeStatement::hasBreak() %s\n", toChars()); | |
| 832 return statement ? statement->hasBreak() : FALSE; | |
| 833 } | |
| 834 | |
| 835 int ScopeStatement::hasContinue() | |
| 836 { | |
| 837 return statement ? statement->hasContinue() : FALSE; | |
| 838 } | |
| 839 | |
| 840 int ScopeStatement::usesEH() | |
| 841 { | |
| 842 return statement ? statement->usesEH() : FALSE; | |
| 843 } | |
| 844 | |
| 336 | 845 int ScopeStatement::blockExit() |
| 846 { | |
| 847 //printf("ScopeStatement::blockExit(%p)\n", statement); | |
| 848 return statement ? statement->blockExit() : BEfallthru; | |
| 849 } | |
| 850 | |
| 159 | 851 int ScopeStatement::comeFrom() |
| 852 { | |
| 853 //printf("ScopeStatement::comeFrom()\n"); | |
| 854 return statement ? statement->comeFrom() : FALSE; | |
| 855 } | |
| 856 | |
| 857 void ScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 858 { | |
| 859 buf->writeByte('{'); | |
| 860 buf->writenl(); | |
| 861 | |
| 862 if (statement) | |
| 863 statement->toCBuffer(buf, hgs); | |
| 864 | |
| 865 buf->writeByte('}'); | |
| 866 buf->writenl(); | |
| 867 } | |
| 868 | |
| 869 /******************************** WhileStatement ***************************/ | |
| 870 | |
| 871 WhileStatement::WhileStatement(Loc loc, Expression *c, Statement *b) | |
| 872 : Statement(loc) | |
| 873 { | |
| 874 condition = c; | |
| 875 body = b; | |
| 876 } | |
| 877 | |
| 878 Statement *WhileStatement::syntaxCopy() | |
| 879 { | |
| 880 WhileStatement *s = new WhileStatement(loc, condition->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 881 return s; | |
| 882 } | |
| 883 | |
| 884 | |
| 885 Statement *WhileStatement::semantic(Scope *sc) | |
| 886 { | |
| 887 #if 0 | |
| 888 if (condition->op == TOKmatch) | |
| 889 { | |
| 890 /* Rewrite while (condition) body as: | |
| 891 * if (condition) | |
| 892 * do | |
| 893 * body | |
| 894 * while ((_match = _match.opNext), _match); | |
| 895 */ | |
| 896 | |
| 897 Expression *ew = new IdentifierExp(0, Id::_match); | |
| 898 ew = new DotIdExp(0, ew, Id::next); | |
| 899 ew = new AssignExp(0, new IdentifierExp(0, Id::_match), ew); | |
| 900 ////ew = new EqualExp(TOKnotequal, 0, ew, new NullExp(0)); | |
| 901 Expression *ev = new IdentifierExp(0, Id::_match); | |
| 902 //ev = new CastExp(0, ev, Type::tvoidptr); | |
| 903 ew = new CommaExp(0, ew, ev); | |
| 904 Statement *sw = new DoStatement(loc, body, ew); | |
| 905 Statement *si = new IfStatement(loc, condition, sw, NULL); | |
| 906 return si->semantic(sc); | |
| 907 } | |
| 908 #endif | |
| 909 | |
| 910 condition = condition->semantic(sc); | |
| 911 condition = resolveProperties(sc, condition); | |
| 912 condition = condition->optimize(WANTvalue); | |
| 913 condition = condition->checkToBoolean(); | |
| 914 | |
| 915 sc->noctor++; | |
| 916 | |
| 917 Scope *scd = sc->push(); | |
| 918 scd->sbreak = this; | |
| 919 scd->scontinue = this; | |
| 920 if (body) | |
| 921 body = body->semantic(scd); | |
| 922 scd->pop(); | |
| 923 | |
| 924 sc->noctor--; | |
| 925 | |
| 926 return this; | |
| 927 } | |
| 928 | |
| 929 int WhileStatement::hasBreak() | |
| 930 { | |
| 931 return TRUE; | |
| 932 } | |
| 933 | |
| 934 int WhileStatement::hasContinue() | |
| 935 { | |
| 936 return TRUE; | |
| 937 } | |
| 938 | |
| 939 int WhileStatement::usesEH() | |
| 940 { | |
| 941 return body ? body->usesEH() : 0; | |
| 942 } | |
| 943 | |
| 336 | 944 int WhileStatement::blockExit() |
| 945 { | |
| 946 //printf("WhileStatement::blockExit(%p)\n", this); | |
| 947 | |
| 948 int result = BEnone; | |
| 949 if (condition->canThrow()) | |
| 950 result |= BEthrow; | |
| 951 if (condition->isBool(TRUE)) | |
| 952 { | |
| 953 if (body) | |
| 954 { result |= body->blockExit(); | |
| 955 if (result & BEbreak) | |
| 956 result |= BEfallthru; | |
| 957 } | |
| 958 } | |
| 959 else if (condition->isBool(FALSE)) | |
| 960 { | |
| 961 result |= BEfallthru; | |
| 962 } | |
| 963 else | |
| 964 { | |
| 965 if (body) | |
| 966 result |= body->blockExit(); | |
| 967 result |= BEfallthru; | |
| 968 } | |
| 969 result &= ~(BEbreak | BEcontinue); | |
| 970 return result; | |
| 971 } | |
| 972 | |
|
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973 |
| 159 | 974 int WhileStatement::comeFrom() |
| 975 { | |
| 976 if (body) | |
| 977 return body->comeFrom(); | |
| 978 return FALSE; | |
| 979 } | |
| 980 | |
| 981 void WhileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 982 { | |
| 983 buf->writestring("while ("); | |
| 984 condition->toCBuffer(buf, hgs); | |
| 985 buf->writebyte(')'); | |
| 986 buf->writenl(); | |
| 987 if (body) | |
| 988 body->toCBuffer(buf, hgs); | |
| 989 } | |
| 990 | |
| 991 /******************************** DoStatement ***************************/ | |
| 992 | |
| 993 DoStatement::DoStatement(Loc loc, Statement *b, Expression *c) | |
| 994 : Statement(loc) | |
| 995 { | |
| 996 body = b; | |
| 997 condition = c; | |
| 998 } | |
| 999 | |
| 1000 Statement *DoStatement::syntaxCopy() | |
| 1001 { | |
| 1002 DoStatement *s = new DoStatement(loc, body ? body->syntaxCopy() : NULL, condition->syntaxCopy()); | |
| 1003 return s; | |
| 1004 } | |
| 1005 | |
| 1006 | |
| 1007 Statement *DoStatement::semantic(Scope *sc) | |
| 1008 { | |
| 1009 sc->noctor++; | |
| 1010 if (body) | |
| 1011 body = body->semanticScope(sc, this, this); | |
| 1012 sc->noctor--; | |
| 1013 condition = condition->semantic(sc); | |
| 1014 condition = resolveProperties(sc, condition); | |
| 1015 condition = condition->optimize(WANTvalue); | |
| 1016 | |
| 1017 condition = condition->checkToBoolean(); | |
| 1018 | |
| 1019 return this; | |
| 1020 } | |
| 1021 | |
| 1022 int DoStatement::hasBreak() | |
| 1023 { | |
| 1024 return TRUE; | |
| 1025 } | |
| 1026 | |
| 1027 int DoStatement::hasContinue() | |
| 1028 { | |
| 1029 return TRUE; | |
| 1030 } | |
| 1031 | |
| 1032 int DoStatement::usesEH() | |
| 1033 { | |
| 1034 return body ? body->usesEH() : 0; | |
| 1035 } | |
| 1036 | |
| 336 | 1037 int DoStatement::blockExit() |
| 1038 { int result; | |
| 1039 | |
| 1040 if (body) | |
| 1041 { result = body->blockExit(); | |
| 1042 if (result == BEbreak) | |
| 1043 return BEfallthru; | |
| 1044 if (result & BEcontinue) | |
| 1045 result |= BEfallthru; | |
| 1046 } | |
| 1047 else | |
| 1048 result = BEfallthru; | |
| 1049 if (result & BEfallthru) | |
| 1050 { if (condition->canThrow()) | |
| 1051 result |= BEthrow; | |
| 1052 if (!(result & BEbreak) && condition->isBool(TRUE)) | |
| 1053 result &= ~BEfallthru; | |
| 1054 } | |
| 1055 result &= ~(BEbreak | BEcontinue); | |
| 1056 return result; | |
| 1057 } | |
| 1058 | |
|
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1059 |
| 159 | 1060 int DoStatement::comeFrom() |
| 1061 { | |
| 1062 if (body) | |
| 1063 return body->comeFrom(); | |
| 1064 return FALSE; | |
| 1065 } | |
| 1066 | |
| 1067 void DoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1068 { | |
| 1069 buf->writestring("do"); | |
| 1070 buf->writenl(); | |
| 1071 if (body) | |
| 1072 body->toCBuffer(buf, hgs); | |
| 1073 buf->writestring("while ("); | |
| 1074 condition->toCBuffer(buf, hgs); | |
| 1075 buf->writebyte(')'); | |
| 1076 } | |
| 1077 | |
| 1078 /******************************** ForStatement ***************************/ | |
| 1079 | |
| 1080 ForStatement::ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body) | |
| 1081 : Statement(loc) | |
| 1082 { | |
| 1083 this->init = init; | |
| 1084 this->condition = condition; | |
| 1085 this->increment = increment; | |
| 1086 this->body = body; | |
| 1087 } | |
| 1088 | |
| 1089 Statement *ForStatement::syntaxCopy() | |
| 1090 { | |
| 1091 Statement *i = NULL; | |
| 1092 if (init) | |
| 1093 i = init->syntaxCopy(); | |
| 1094 Expression *c = NULL; | |
| 1095 if (condition) | |
| 1096 c = condition->syntaxCopy(); | |
| 1097 Expression *inc = NULL; | |
| 1098 if (increment) | |
| 1099 inc = increment->syntaxCopy(); | |
| 1100 ForStatement *s = new ForStatement(loc, i, c, inc, body->syntaxCopy()); | |
| 1101 return s; | |
| 1102 } | |
| 1103 | |
| 1104 Statement *ForStatement::semantic(Scope *sc) | |
| 1105 { | |
| 1106 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1107 sym->parent = sc->scopesym; | |
| 1108 sc = sc->push(sym); | |
| 1109 if (init) | |
| 1110 init = init->semantic(sc); | |
|
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1111 #if 0 |
| 159 | 1112 if (!condition) |
| 1113 // Use a default value | |
| 1114 condition = new IntegerExp(loc, 1, Type::tboolean); | |
|
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1115 #endif |
| 159 | 1116 sc->noctor++; |
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1117 if (condition) |
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1118 { |
|
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1119 condition = condition->semantic(sc); |
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1120 condition = resolveProperties(sc, condition); |
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1121 condition = condition->optimize(WANTvalue); |
|
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1122 condition = condition->checkToBoolean(); |
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1123 } |
| 159 | 1124 if (increment) |
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1125 { increment = increment->semantic(sc); |
|
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1126 increment = resolveProperties(sc, increment); |
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1127 } |
| 159 | 1128 |
| 1129 sc->sbreak = this; | |
| 1130 sc->scontinue = this; | |
|
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1131 if (body) |
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1132 body = body->semantic(sc); |
| 159 | 1133 sc->noctor--; |
| 1134 | |
| 1135 sc->pop(); | |
| 1136 return this; | |
| 1137 } | |
| 1138 | |
| 1139 void ForStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 1140 { | |
| 1141 //printf("ForStatement::scopeCode()\n"); | |
| 1142 //print(); | |
| 1143 if (init) | |
| 1144 init->scopeCode(sentry, sexception, sfinally); | |
| 1145 else | |
| 1146 Statement::scopeCode(sentry, sexception, sfinally); | |
| 1147 } | |
| 1148 | |
| 1149 int ForStatement::hasBreak() | |
| 1150 { | |
| 1151 //printf("ForStatement::hasBreak()\n"); | |
| 1152 return TRUE; | |
| 1153 } | |
| 1154 | |
| 1155 int ForStatement::hasContinue() | |
| 1156 { | |
| 1157 return TRUE; | |
| 1158 } | |
| 1159 | |
| 1160 int ForStatement::usesEH() | |
| 1161 { | |
| 1162 return (init && init->usesEH()) || body->usesEH(); | |
| 1163 } | |
| 1164 | |
| 336 | 1165 int ForStatement::blockExit() |
| 1166 { int result = BEfallthru; | |
| 1167 | |
| 1168 if (init) | |
| 1169 { result = init->blockExit(); | |
| 1170 if (!(result & BEfallthru)) | |
| 1171 return result; | |
| 1172 } | |
| 1173 if (condition) | |
| 1174 { if (condition->canThrow()) | |
| 1175 result |= BEthrow; | |
| 1176 } | |
| 1177 else | |
| 1178 result &= ~BEfallthru; // the body must do the exiting | |
| 1179 if (body) | |
| 1180 { int r = body->blockExit(); | |
|
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1181 if (r & (BEbreak | BEgoto)) |
| 336 | 1182 result |= BEfallthru; |
|
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1183 result |= r & ~(BEfallthru | BEbreak | BEcontinue); |
| 336 | 1184 } |
| 1185 if (increment && increment->canThrow()) | |
| 1186 result |= BEthrow; | |
| 1187 return result; | |
| 1188 } | |
| 1189 | |
|
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1190 |
| 159 | 1191 int ForStatement::comeFrom() |
| 1192 { | |
| 1193 //printf("ForStatement::comeFrom()\n"); | |
| 1194 if (body) | |
| 1195 { int result = body->comeFrom(); | |
| 1196 //printf("result = %d\n", result); | |
| 1197 return result; | |
| 1198 } | |
| 1199 return FALSE; | |
| 1200 } | |
| 1201 | |
| 1202 void ForStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1203 { | |
| 1204 buf->writestring("for ("); | |
| 1205 if (init) | |
| 1206 { | |
| 1207 hgs->FLinit.init++; | |
| 1208 init->toCBuffer(buf, hgs); | |
| 1209 hgs->FLinit.init--; | |
| 1210 } | |
| 1211 else | |
| 1212 buf->writebyte(';'); | |
| 1213 if (condition) | |
| 1214 { buf->writebyte(' '); | |
| 1215 condition->toCBuffer(buf, hgs); | |
| 1216 } | |
| 1217 buf->writebyte(';'); | |
| 1218 if (increment) | |
| 1219 { buf->writebyte(' '); | |
| 1220 increment->toCBuffer(buf, hgs); | |
| 1221 } | |
| 1222 buf->writebyte(')'); | |
| 1223 buf->writenl(); | |
| 1224 buf->writebyte('{'); | |
| 1225 buf->writenl(); | |
| 1226 body->toCBuffer(buf, hgs); | |
| 1227 buf->writebyte('}'); | |
| 1228 buf->writenl(); | |
| 1229 } | |
| 1230 | |
| 1231 /******************************** ForeachStatement ***************************/ | |
| 1232 | |
| 1233 ForeachStatement::ForeachStatement(Loc loc, enum TOK op, Arguments *arguments, | |
| 1234 Expression *aggr, Statement *body) | |
| 1235 : Statement(loc) | |
| 1236 { | |
| 1237 this->op = op; | |
| 1238 this->arguments = arguments; | |
| 1239 this->aggr = aggr; | |
| 1240 this->body = body; | |
| 1241 | |
| 1242 this->key = NULL; | |
| 1243 this->value = NULL; | |
| 1244 | |
| 1245 this->func = NULL; | |
| 1246 } | |
| 1247 | |
| 1248 Statement *ForeachStatement::syntaxCopy() | |
| 1249 { | |
| 1250 Arguments *args = Argument::arraySyntaxCopy(arguments); | |
| 1251 Expression *exp = aggr->syntaxCopy(); | |
| 1252 ForeachStatement *s = new ForeachStatement(loc, op, args, exp, | |
| 1253 body ? body->syntaxCopy() : NULL); | |
| 1254 return s; | |
| 1255 } | |
| 1256 | |
| 1257 Statement *ForeachStatement::semantic(Scope *sc) | |
| 1258 { | |
| 1259 //printf("ForeachStatement::semantic() %p\n", this); | |
| 1260 ScopeDsymbol *sym; | |
| 1261 Statement *s = this; | |
|
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|
1262 size_t dim = arguments->dim; |
| 159 | 1263 TypeAArray *taa = NULL; |
| 1264 | |
| 1265 Type *tn = NULL; | |
| 1266 Type *tnv = NULL; | |
| 1267 | |
| 1268 func = sc->func; | |
| 1269 if (func->fes) | |
| 1270 func = func->fes->func; | |
| 1271 | |
| 1272 aggr = aggr->semantic(sc); | |
| 1273 aggr = resolveProperties(sc, aggr); | |
|
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1274 aggr = aggr->optimize(WANTvalue); |
| 159 | 1275 if (!aggr->type) |
| 1276 { | |
| 1277 error("invalid foreach aggregate %s", aggr->toChars()); | |
| 1278 return this; | |
| 1279 } | |
| 1280 | |
|
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1281 inferApplyArgTypes(op, arguments, aggr, sc->module); |
| 159 | 1282 |
| 1283 /* Check for inference errors | |
| 1284 */ | |
| 1285 if (dim != arguments->dim) | |
| 1286 { | |
| 1287 //printf("dim = %d, arguments->dim = %d\n", dim, arguments->dim); | |
| 1288 error("cannot uniquely infer foreach argument types"); | |
| 1289 return this; | |
| 1290 } | |
| 1291 | |
| 1292 Type *tab = aggr->type->toBasetype(); | |
| 1293 | |
| 1294 if (tab->ty == Ttuple) // don't generate new scope for tuple loops | |
| 1295 { | |
| 1296 if (dim < 1 || dim > 2) | |
| 1297 { | |
| 1298 error("only one (value) or two (key,value) arguments for tuple foreach"); | |
| 1299 return s; | |
| 1300 } | |
| 1301 | |
| 1302 TypeTuple *tuple = (TypeTuple *)tab; | |
| 1303 Statements *statements = new Statements(); | |
| 1304 //printf("aggr: op = %d, %s\n", aggr->op, aggr->toChars()); | |
| 1305 size_t n; | |
| 1306 TupleExp *te = NULL; | |
| 1307 if (aggr->op == TOKtuple) // expression tuple | |
| 1308 { te = (TupleExp *)aggr; | |
| 1309 n = te->exps->dim; | |
| 1310 } | |
| 1311 else if (aggr->op == TOKtype) // type tuple | |
| 1312 { | |
| 1313 n = Argument::dim(tuple->arguments); | |
| 1314 } | |
| 1315 else | |
| 1316 assert(0); | |
| 1317 for (size_t j = 0; j < n; j++) | |
| 1318 { size_t k = (op == TOKforeach) ? j : n - 1 - j; | |
| 1319 Expression *e; | |
| 1320 Type *t; | |
| 1321 if (te) | |
| 1322 e = (Expression *)te->exps->data[k]; | |
| 1323 else | |
| 1324 t = Argument::getNth(tuple->arguments, k)->type; | |
| 1325 Argument *arg = (Argument *)arguments->data[0]; | |
| 1326 Statements *st = new Statements(); | |
| 1327 | |
| 1328 if (dim == 2) | |
| 1329 { // Declare key | |
| 1330 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1331 error("no storage class for key %s", arg->ident->toChars()); | |
| 1332 TY keyty = arg->type->ty; | |
|
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1333 if (keyty != Tint32 && keyty != Tuns32) |
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1334 { |
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1335 if (global.params.is64bit) |
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1336 { |
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1337 if (keyty != Tint64 && keyty != Tuns64) |
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1338 error("foreach: key type must be int or uint, long or ulong, not %s", arg->type->toChars()); |
|
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1339 } |
|
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1340 else |
|
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|
1341 error("foreach: key type must be int or uint, not %s", arg->type->toChars()); |
|
e961851fb8be
Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1342 } |
| 159 | 1343 Initializer *ie = new ExpInitializer(0, new IntegerExp(k)); |
| 1344 VarDeclaration *var = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1345 var->storage_class |= STCconst; | |
| 1346 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1347 st->push(new ExpStatement(loc, de)); | |
| 1348 arg = (Argument *)arguments->data[1]; // value | |
| 1349 } | |
| 1350 // Declare value | |
| 1351 if (arg->storageClass & (STCout | STCref | STClazy)) | |
| 1352 error("no storage class for value %s", arg->ident->toChars()); | |
| 1353 Dsymbol *var; | |
| 1354 if (te) | |
| 1355 { | |
| 1356 if (e->type->toBasetype()->ty == Tfunction && | |
| 1357 e->op == TOKvar) | |
| 1358 { VarExp *ve = (VarExp *)e; | |
| 1359 var = new AliasDeclaration(loc, arg->ident, ve->var); | |
| 1360 } | |
| 1361 else | |
| 1362 { | |
| 1363 arg->type = e->type; | |
| 1364 Initializer *ie = new ExpInitializer(0, e); | |
| 1365 VarDeclaration *v = new VarDeclaration(loc, arg->type, arg->ident, ie); | |
| 1366 if (e->isConst()) | |
| 1367 v->storage_class |= STCconst; | |
| 1368 var = v; | |
| 1369 } | |
| 1370 } | |
| 1371 else | |
| 1372 { | |
| 1373 var = new AliasDeclaration(loc, arg->ident, t); | |
| 1374 } | |
| 1375 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1376 st->push(new ExpStatement(loc, de)); | |
| 1377 | |
| 1378 st->push(body->syntaxCopy()); | |
| 1379 s = new CompoundStatement(loc, st); | |
| 1380 s = new ScopeStatement(loc, s); | |
| 1381 statements->push(s); | |
| 1382 } | |
| 1383 | |
| 1384 s = new UnrolledLoopStatement(loc, statements); | |
| 1385 s = s->semantic(sc); | |
| 1386 return s; | |
| 1387 } | |
| 1388 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1389 for (size_t i = 0; i < dim; i++) |
| 159 | 1390 { Argument *arg = (Argument *)arguments->data[i]; |
| 1391 if (!arg->type) | |
| 1392 { | |
| 1393 error("cannot infer type for %s", arg->ident->toChars()); | |
| 1394 return this; | |
| 1395 } | |
| 1396 } | |
| 1397 | |
| 1398 sym = new ScopeDsymbol(); | |
| 1399 sym->parent = sc->scopesym; | |
| 1400 sc = sc->push(sym); | |
| 1401 | |
| 1402 sc->noctor++; | |
| 1403 | |
| 1404 switch (tab->ty) | |
| 1405 { | |
| 1406 case Tarray: | |
| 1407 case Tsarray: | |
| 1408 if (dim < 1 || dim > 2) | |
| 1409 { | |
| 1410 error("only one or two arguments for array foreach"); | |
| 1411 break; | |
| 1412 } | |
| 1413 | |
| 1414 /* Look for special case of parsing char types out of char type | |
| 1415 * array. | |
| 1416 */ | |
| 1417 tn = tab->nextOf()->toBasetype(); | |
| 1418 if (tn->ty == Tchar || tn->ty == Twchar || tn->ty == Tdchar) | |
| 1419 { Argument *arg; | |
| 1420 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff
changeset
|
1421 int i = (dim == 1) ? 0 : 1; // index of value |
| 159 | 1422 arg = (Argument *)arguments->data[i]; |
| 1423 arg->type = arg->type->semantic(loc, sc); | |
| 1424 tnv = arg->type->toBasetype(); | |
| 1425 if (tnv->ty != tn->ty && | |
| 1426 (tnv->ty == Tchar || tnv->ty == Twchar || tnv->ty == Tdchar)) | |
| 1427 { | |
| 1428 if (arg->storageClass & STCref) | |
| 1429 error("foreach: value of UTF conversion cannot be ref"); | |
| 1430 if (dim == 2) | |
| 1431 { arg = (Argument *)arguments->data[0]; | |
| 1432 if (arg->storageClass & STCref) | |
| 1433 error("foreach: key cannot be ref"); | |
| 1434 } | |
| 1435 goto Lapply; | |
| 1436 } | |
| 1437 } | |
| 1438 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1439 for (size_t i = 0; i < dim; i++) |
| 159 | 1440 { // Declare args |
| 1441 Argument *arg = (Argument *)arguments->data[i]; | |
| 1442 VarDeclaration *var; | |
| 1443 | |
| 1444 var = new VarDeclaration(loc, arg->type, arg->ident, NULL); | |
| 1445 var->storage_class |= STCforeach; | |
| 1446 var->storage_class |= arg->storageClass & (STCin | STCout | STCref); | |
| 1447 #if 1 | |
| 1448 DeclarationExp *de = new DeclarationExp(loc, var); | |
| 1449 de->semantic(sc); | |
| 1450 #else | |
| 1451 var->semantic(sc); | |
| 1452 if (!sc->insert(var)) | |
| 1453 error("%s already defined", var->ident->toChars()); | |
| 1454 #endif | |
| 1455 if (dim == 2 && i == 0) | |
| 1456 key = var; | |
| 1457 else | |
| 1458 value = var; | |
| 1459 } | |
| 1460 | |
| 1461 sc->sbreak = this; | |
| 1462 sc->scontinue = this; | |
| 1463 body = body->semantic(sc); | |
| 1464 | |
| 1465 if (!value->type->equals(tab->next)) | |
| 1466 { | |
| 1467 if (aggr->op == TOKstring) | |
| 1468 aggr = aggr->implicitCastTo(sc, value->type->arrayOf()); | |
| 1469 else | |
|
846
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1470 error("foreach: %s is not an array of %s", |
|
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Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1471 tab->toChars(), value->type->toChars()); |
| 159 | 1472 } |
| 1473 | |
|
1195
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Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
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diff
changeset
|
1474 if (key && key->type->ty != Tint32 && key->type->ty != Tuns32) |
|
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Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1475 { |
|
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Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1476 if (global.params.is64bit) |
|
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Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
1477 { |
|
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Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
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diff
changeset
|
1478 if (key->type->ty != Tint64 && key->type->ty != Tuns64) |
|
e961851fb8be
Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1479 error("foreach: key type must be int or uint, long or ulong, not %s", key->type->toChars()); |
|
e961851fb8be
Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1480 } |
|
e961851fb8be
Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1481 else |
|
e961851fb8be
Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1482 error("foreach: key type must be int or uint, not %s", key->type->toChars()); |
|
e961851fb8be
Merged DMD 1.042.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
1164
diff
changeset
|
1483 } |
| 159 | 1484 |
| 1485 if (key && key->storage_class & (STCout | STCref)) | |
| 1486 error("foreach: key cannot be out or ref"); | |
| 1487 break; | |
| 1488 | |
| 1489 case Taarray: | |
| 1490 taa = (TypeAArray *)tab; | |
| 1491 if (dim < 1 || dim > 2) | |
| 1492 { | |
| 1493 error("only one or two arguments for associative array foreach"); | |
| 1494 break; | |
| 1495 } | |
| 1496 if (op == TOKforeach_reverse) | |
| 1497 { | |
| 1498 error("no reverse iteration on associative arrays"); | |
| 1499 } | |
| 1500 goto Lapply; | |
| 1501 | |
| 1502 case Tclass: | |
| 1503 case Tstruct: | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1504 #if DMDV2 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1505 { /* 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
|
1506 * .empty, .next, .retreat, .head and .rear |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1507 * foreach (e; range) { ... } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1508 * translates to: |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1509 * for (auto __r = range; !__r.empty; __r.next) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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diff
changeset
|
1510 * { auto e = __r.head; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1511 * ... |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1512 * } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1513 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1514 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
|
1515 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1516 AggregateDeclaration *ad = (tab->ty == Tclass) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1517 ? (AggregateDeclaration *)((TypeClass *)tab)->sym |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1518 : (AggregateDeclaration *)((TypeStruct *)tab)->sym; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1519 Identifier *idhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1520 Identifier *idnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1521 if (op == TOKforeach) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1522 { idhead = Id::Fhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1523 idnext = Id::Fnext; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1524 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1525 else |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1526 { idhead = Id::Frear; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1527 idnext = Id::Fretreat; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1528 } |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1529 Dsymbol *shead = search_function(ad, idhead); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1530 if (!shead) |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1531 goto Lapply; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1532 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1533 /* Generate a temporary __r and initialize it with the aggregate. |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1534 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1535 Identifier *id = Identifier::generateId("__r"); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1536 VarDeclaration *r = new VarDeclaration(loc, NULL, id, new ExpInitializer(loc, aggr)); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1537 r->semantic(sc); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1538 Statement *init = new DeclarationStatement(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1539 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1540 // !__r.empty |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1541 Expression *e = new VarExp(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1542 e = new DotIdExp(loc, e, Id::Fempty); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1543 Expression *condition = new NotExp(loc, e); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1544 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1545 // __r.next |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1546 e = new VarExp(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1547 Expression *increment = new DotIdExp(loc, e, idnext); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1548 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1549 /* Declaration statement for e: |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1550 * auto e = __r.idhead; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1551 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1552 e = new VarExp(loc, r); |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1553 Expression *einit = new DotIdExp(loc, e, idhead); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1554 einit = einit->semantic(sc); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1555 Argument *arg = (Argument *)arguments->data[0]; |
|
bc982f1ad106
Merged DMD 1.037 frontend
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parents:
794
diff
changeset
|
1556 VarDeclaration *ve = new VarDeclaration(loc, arg->type, arg->ident, new ExpInitializer(loc, einit)); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1557 ve->storage_class |= STCforeach; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1558 ve->storage_class |= arg->storageClass & (STCin | STCout | STCref | STCconst | STCinvariant); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1559 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1560 DeclarationExp *de = new DeclarationExp(loc, ve); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1561 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1562 Statement *body = new CompoundStatement(loc, |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1563 new DeclarationStatement(loc, de), this->body); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1564 |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1565 s = new ForStatement(loc, init, condition, increment, body); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
1566 s = s->semantic(sc); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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1567 break; |
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|
1568 } |
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1569 #endif |
| 159 | 1570 case Tdelegate: |
| 1571 Lapply: | |
| 1572 { FuncDeclaration *fdapply; | |
| 1573 Arguments *args; | |
| 1574 Expression *ec; | |
| 1575 Expression *e; | |
| 1576 FuncLiteralDeclaration *fld; | |
| 1577 Argument *a; | |
| 1578 Type *t; | |
| 1579 Expression *flde; | |
| 1580 Identifier *id; | |
| 1581 Type *tret; | |
|
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1582 TypeDelegate* dgty; |
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1583 TypeDelegate* dgty2; |
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1584 TypeDelegate* fldeTy; |
| 159 | 1585 |
| 1586 tret = func->type->nextOf(); | |
| 1587 | |
| 1588 // Need a variable to hold value from any return statements in body. | |
| 1589 if (!sc->func->vresult && tret && tret != Type::tvoid) | |
| 1590 { VarDeclaration *v; | |
| 1591 | |
| 1592 v = new VarDeclaration(loc, tret, Id::result, NULL); | |
| 1593 v->noauto = 1; | |
| 1594 v->semantic(sc); | |
| 1595 if (!sc->insert(v)) | |
| 1596 assert(0); | |
| 1597 v->parent = sc->func; | |
| 1598 sc->func->vresult = v; | |
| 1599 } | |
| 1600 | |
| 1601 /* Turn body into the function literal: | |
| 1602 * int delegate(ref T arg) { body } | |
| 1603 */ | |
| 1604 args = new Arguments(); | |
|
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1605 for (size_t i = 0; i < dim; i++) |
| 159 | 1606 { Argument *arg = (Argument *)arguments->data[i]; |
| 1607 | |
| 1608 arg->type = arg->type->semantic(loc, sc); | |
| 1609 if (arg->storageClass & STCref) | |
| 1610 id = arg->ident; | |
| 1611 else | |
| 1612 { // Make a copy of the ref argument so it isn't | |
| 1613 // a reference. | |
| 1614 VarDeclaration *v; | |
| 1615 Initializer *ie; | |
|
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|
1616 |
|
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|
1617 id = Lexer::uniqueId("__applyArg", i); |
| 159 | 1618 |
| 1619 ie = new ExpInitializer(0, new IdentifierExp(0, id)); | |
| 1620 v = new VarDeclaration(0, arg->type, arg->ident, ie); | |
| 1621 s = new DeclarationStatement(0, v); | |
| 1622 body = new CompoundStatement(loc, s, body); | |
| 1623 } | |
| 1624 a = new Argument(STCref, arg->type, id, NULL); | |
| 1625 args->push(a); | |
| 1626 } | |
| 1627 t = new TypeFunction(args, Type::tint32, 0, LINKd); | |
| 1628 fld = new FuncLiteralDeclaration(loc, 0, t, TOKdelegate, this); | |
| 1629 fld->fbody = body; | |
| 1630 flde = new FuncExp(loc, fld); | |
| 1631 flde = flde->semantic(sc); | |
| 1632 | |
| 1633 // Resolve any forward referenced goto's | |
| 1634 for (int i = 0; i < gotos.dim; i++) | |
| 1635 { CompoundStatement *cs = (CompoundStatement *)gotos.data[i]; | |
| 1636 GotoStatement *gs = (GotoStatement *)cs->statements->data[0]; | |
| 1637 | |
| 1638 if (!gs->label->statement) | |
| 1639 { // 'Promote' it to this scope, and replace with a return | |
| 1640 cases.push(gs); | |
| 1641 s = new ReturnStatement(0, new IntegerExp(cases.dim + 1)); | |
| 1642 cs->statements->data[0] = (void *)s; | |
| 1643 } | |
| 1644 } | |
| 1645 | |
| 1646 if (tab->ty == Taarray) | |
| 1647 { | |
| 1648 // Check types | |
| 1649 Argument *arg = (Argument *)arguments->data[0]; | |
| 1650 if (dim == 2) | |
| 1651 { | |
| 1652 if (arg->storageClass & STCref) | |
| 1653 error("foreach: index cannot be ref"); | |
| 1654 if (!arg->type->equals(taa->index)) | |
| 1655 error("foreach: index must be type %s, not %s", taa->index->toChars(), arg->type->toChars()); | |
| 1656 arg = (Argument *)arguments->data[1]; | |
| 1657 } | |
| 1658 if (!arg->type->equals(taa->nextOf())) | |
| 1659 error("foreach: value must be type %s, not %s", taa->nextOf()->toChars(), arg->type->toChars()); | |
| 1660 | |
| 1661 /* Call: | |
| 1662 * _aaApply(aggr, keysize, flde) | |
| 1663 */ | |
|
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1664 //LDC: Build arguments. |
|
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1665 static FuncDeclaration *aaApply2_fd = NULL; |
|
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1666 static TypeDelegate* aaApply2_dg; |
|
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1667 if(!aaApply2_fd) { |
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1668 Arguments* args = new Arguments; |
|
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|
1669 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
|
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1670 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
|
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|
1671 Arguments* dgargs = new Arguments; |
|
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|
1672 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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|
1673 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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|
1674 aaApply2_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
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|
1675 args->push(new Argument(STCin, aaApply2_dg, NULL, NULL)); |
|
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|
1676 aaApply2_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply2"); |
|
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1677 } |
|
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|
1678 static FuncDeclaration *aaApply_fd = NULL; |
|
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parents:
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|
1679 static TypeDelegate* aaApply_dg; |
|
389
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|
1680 if(!aaApply_fd) { |
|
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|
1681 Arguments* args = new Arguments; |
|
715
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Removed TypeOpaque from DMD.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
664
diff
changeset
|
1682 args->push(new Argument(STCin, Type::tvoid->pointerTo(), NULL, NULL)); |
|
389
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|
1683 args->push(new Argument(STCin, Type::tsize_t, NULL, NULL)); |
|
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|
1684 Arguments* dgargs = new Arguments; |
|
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|
1685 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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diff
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|
1686 aaApply_dg = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
7261ff0f95ff
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|
1687 args->push(new Argument(STCin, aaApply_dg, NULL, NULL)); |
|
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|
1688 aaApply_fd = FuncDeclaration::genCfunc(args, Type::tindex, "_aaApply"); |
|
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|
1689 } |
|
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|
1690 if (dim == 2) { |
|
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|
1691 fdapply = aaApply2_fd; |
|
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|
1692 fldeTy = aaApply2_dg; |
|
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|
1693 } else { |
|
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|
1694 fdapply = aaApply_fd; |
|
719
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|
1695 fldeTy = aaApply_dg; |
|
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|
1696 } |
| 159 | 1697 ec = new VarExp(0, fdapply); |
| 1698 Expressions *exps = new Expressions(); | |
| 1699 exps->push(aggr); | |
| 1700 size_t keysize = taa->key->size(); | |
|
765
f08e0ff8d28c
Fixed 32bit assumption in statement.c when calling aaApply(2).
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
719
diff
changeset
|
1701 keysize = (keysize + (PTRSIZE-1)) & ~(PTRSIZE-1); |
| 159 | 1702 exps->push(new IntegerExp(0, keysize, Type::tsize_t)); |
|
719
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|
1703 |
|
7261ff0f95ff
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parents:
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diff
changeset
|
1704 // LDC paint delegate argument to the type runtime expects |
|
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Implemented first class delegates. closes #101
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parents:
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diff
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|
1705 if (!fldeTy->equals(flde->type)) |
|
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Implemented first class delegates. closes #101
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parents:
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|
1706 { |
|
7261ff0f95ff
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parents:
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diff
changeset
|
1707 flde = new CastExp(loc, flde, flde->type); |
|
7261ff0f95ff
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parents:
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|
1708 flde->type = fldeTy; |
|
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|
1709 } |
| 159 | 1710 exps->push(flde); |
| 1711 e = new CallExp(loc, ec, exps); | |
| 1712 e->type = Type::tindex; // don't run semantic() on e | |
| 1713 } | |
| 1714 else if (tab->ty == Tarray || tab->ty == Tsarray) | |
| 1715 { | |
| 1716 /* Call: | |
| 1717 * _aApply(aggr, flde) | |
| 1718 */ | |
| 1719 static char fntab[9][3] = | |
| 1720 { "cc","cw","cd", | |
| 1721 "wc","cc","wd", | |
| 1722 "dc","dw","dd" | |
| 1723 }; | |
| 1724 char fdname[7+1+2+ sizeof(dim)*3 + 1]; | |
| 1725 int flag; | |
| 1726 | |
| 1727 switch (tn->ty) | |
| 1728 { | |
| 1729 case Tchar: flag = 0; break; | |
| 1730 case Twchar: flag = 3; break; | |
| 1731 case Tdchar: flag = 6; break; | |
| 1732 default: assert(0); | |
| 1733 } | |
| 1734 switch (tnv->ty) | |
| 1735 { | |
| 1736 case Tchar: flag += 0; break; | |
| 1737 case Twchar: flag += 1; break; | |
| 1738 case Tdchar: flag += 2; break; | |
| 1739 default: assert(0); | |
| 1740 } | |
| 1741 const char *r = (op == TOKforeach_reverse) ? "R" : ""; | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
945
diff
changeset
|
1742 int j = sprintf(fdname, "_aApply%s%.*s%zu", r, 2, fntab[flag], dim); |
| 159 | 1743 assert(j < sizeof(fdname)); |
|
664
eef8ac26c66c
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parents:
510
diff
changeset
|
1744 //LDC: Build arguments. |
|
378
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|
1745 Arguments* args = new Arguments; |
|
715
30b42a283c8e
Removed TypeOpaque from DMD.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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|
1746 args->push(new Argument(STCin, tn->arrayOf(), NULL, NULL)); |
|
378
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|
1747 if (dim == 2) { |
|
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|
1748 Arguments* dgargs = new Arguments; |
|
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Get rid of runTimeHack and instead add proper argument info to the frontend
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|
1749 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
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|
1750 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
719
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|
1751 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
378
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|
1752 args->push(new Argument(STCin, dgty, NULL, NULL)); |
|
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|
1753 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
|
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|
1754 } else { |
|
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|
1755 Arguments* dgargs = new Arguments; |
|
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|
1756 dgargs->push(new Argument(STCin, Type::tvoidptr, NULL, NULL)); |
|
719
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|
1757 dgty = new TypeDelegate(new TypeFunction(dgargs, Type::tindex, 0, LINKd)); |
|
378
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|
1758 args->push(new Argument(STCin, dgty, NULL, NULL)); |
|
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|
1759 fdapply = FuncDeclaration::genCfunc(args, Type::tindex, fdname); |
|
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|
1760 } |
| 159 | 1761 |
| 1762 ec = new VarExp(0, fdapply); | |
| 1763 Expressions *exps = new Expressions(); | |
| 1764 if (tab->ty == Tsarray) | |
| 1765 aggr = aggr->castTo(sc, tn->arrayOf()); | |
|
715
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|
1766 exps->push(aggr); |
|
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|
1767 |
|
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|
1768 // LDC paint delegate argument to the type runtime expects |
|
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changeset
|
1769 if (!dgty->equals(flde->type)) |
|
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|
1770 { |
|
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|
1771 flde = new CastExp(loc, flde, flde->type); |
|
7261ff0f95ff
Implemented first class delegates. closes #101
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|
1772 flde->type = dgty; |
|
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|
1773 } |
| 159 | 1774 exps->push(flde); |
| 1775 e = new CallExp(loc, ec, exps); | |
| 1776 e->type = Type::tindex; // don't run semantic() on e | |
| 1777 } | |
| 1778 else if (tab->ty == Tdelegate) | |
| 1779 { | |
| 1780 /* Call: | |
| 1781 * aggr(flde) | |
| 1782 */ | |
| 1783 Expressions *exps = new Expressions(); | |
| 1784 exps->push(flde); | |
| 1785 e = new CallExp(loc, aggr, exps); | |
| 1786 e = e->semantic(sc); | |
| 1787 if (e->type != Type::tint32) | |
| 1788 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1789 } | |
| 1790 else | |
| 1791 { | |
| 1792 /* Call: | |
| 1793 * aggr.apply(flde) | |
| 1794 */ | |
| 1795 ec = new DotIdExp(loc, aggr, | |
| 1796 (op == TOKforeach_reverse) ? Id::applyReverse | |
| 1797 : Id::apply); | |
| 1798 Expressions *exps = new Expressions(); | |
| 1799 exps->push(flde); | |
| 1800 e = new CallExp(loc, ec, exps); | |
| 1801 e = e->semantic(sc); | |
| 1802 if (e->type != Type::tint32) | |
| 1803 error("opApply() function for %s must return an int", tab->toChars()); | |
| 1804 } | |
| 1805 | |
| 1806 if (!cases.dim) | |
| 1807 // Easy case, a clean exit from the loop | |
| 1808 s = new ExpStatement(loc, e); | |
| 1809 else | |
| 1810 { // Construct a switch statement around the return value | |
| 1811 // of the apply function. | |
| 1812 Statements *a = new Statements(); | |
| 1813 | |
| 1814 // default: break; takes care of cases 0 and 1 | |
| 1815 s = new BreakStatement(0, NULL); | |
| 1816 s = new DefaultStatement(0, s); | |
| 1817 a->push(s); | |
| 1818 | |
| 1819 // cases 2... | |
| 1820 for (int i = 0; i < cases.dim; i++) | |
| 1821 { | |
| 1822 s = (Statement *)cases.data[i]; | |
| 1823 s = new CaseStatement(0, new IntegerExp(i + 2), s); | |
| 1824 a->push(s); | |
| 1825 } | |
| 1826 | |
| 1827 s = new CompoundStatement(loc, a); | |
| 1828 s = new SwitchStatement(loc, e, s); | |
| 1829 s = s->semantic(sc); | |
| 1830 } | |
| 1831 break; | |
| 1832 } | |
| 1833 | |
| 1834 default: | |
| 1835 error("foreach: %s is not an aggregate type", aggr->type->toChars()); | |
| 1836 break; | |
| 1837 } | |
| 1838 sc->noctor--; | |
| 1839 sc->pop(); | |
| 1840 return s; | |
| 1841 } | |
| 1842 | |
| 1843 int ForeachStatement::hasBreak() | |
| 1844 { | |
| 1845 return TRUE; | |
| 1846 } | |
| 1847 | |
| 1848 int ForeachStatement::hasContinue() | |
| 1849 { | |
| 1850 return TRUE; | |
| 1851 } | |
| 1852 | |
| 1853 int ForeachStatement::usesEH() | |
| 1854 { | |
| 1855 return body->usesEH(); | |
| 1856 } | |
| 1857 | |
| 336 | 1858 int ForeachStatement::blockExit() |
| 1859 { int result = BEfallthru; | |
| 1860 | |
| 1861 if (aggr->canThrow()) | |
| 1862 result |= BEthrow; | |
| 1863 | |
| 1864 if (body) | |
| 1865 { | |
| 1866 result |= body->blockExit() & ~(BEbreak | BEcontinue); | |
| 1867 } | |
| 1868 return result; | |
| 1869 } | |
| 1870 | |
| 159 | 1871 int ForeachStatement::comeFrom() |
| 1872 { | |
| 1873 if (body) | |
| 1874 return body->comeFrom(); | |
| 1875 return FALSE; | |
| 1876 } | |
| 1877 | |
| 1878 void ForeachStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 1879 { | |
| 1880 buf->writestring(Token::toChars(op)); | |
| 1881 buf->writestring(" ("); | |
| 1882 for (int i = 0; i < arguments->dim; i++) | |
| 1883 { | |
| 1884 Argument *a = (Argument *)arguments->data[i]; | |
| 1885 if (i) | |
| 1886 buf->writestring(", "); | |
| 1887 if (a->storageClass & STCref) | |
| 1888 buf->writestring((global.params.Dversion == 1) | |
| 1889 ? (char*)"inout " : (char*)"ref "); | |
| 1890 if (a->type) | |
| 1891 a->type->toCBuffer(buf, a->ident, hgs); | |
| 1892 else | |
| 1893 buf->writestring(a->ident->toChars()); | |
| 1894 } | |
| 1895 buf->writestring("; "); | |
| 1896 aggr->toCBuffer(buf, hgs); | |
| 1897 buf->writebyte(')'); | |
| 1898 buf->writenl(); | |
| 1899 buf->writebyte('{'); | |
| 1900 buf->writenl(); | |
| 1901 if (body) | |
| 1902 body->toCBuffer(buf, hgs); | |
| 1903 buf->writebyte('}'); | |
| 1904 buf->writenl(); | |
| 1905 } | |
| 1906 | |
| 1907 /******************************** IfStatement ***************************/ | |
| 1908 | |
| 1909 IfStatement::IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody) | |
| 1910 : Statement(loc) | |
| 1911 { | |
| 1912 this->arg = arg; | |
| 1913 this->condition = condition; | |
| 1914 this->ifbody = ifbody; | |
| 1915 this->elsebody = elsebody; | |
| 1916 this->match = NULL; | |
| 1917 } | |
| 1918 | |
| 1919 Statement *IfStatement::syntaxCopy() | |
| 1920 { | |
| 1921 Statement *i = NULL; | |
| 1922 if (ifbody) | |
| 1923 i = ifbody->syntaxCopy(); | |
| 1924 | |
| 1925 Statement *e = NULL; | |
| 1926 if (elsebody) | |
| 1927 e = elsebody->syntaxCopy(); | |
| 1928 | |
| 1929 Argument *a = arg ? arg->syntaxCopy() : NULL; | |
| 1930 IfStatement *s = new IfStatement(loc, a, condition->syntaxCopy(), i, e); | |
| 1931 return s; | |
| 1932 } | |
| 1933 | |
| 1934 Statement *IfStatement::semantic(Scope *sc) | |
| 1935 { | |
| 1936 condition = condition->semantic(sc); | |
| 1937 condition = resolveProperties(sc, condition); | |
| 1938 condition = condition->checkToBoolean(); | |
| 1939 | |
| 1940 // If we can short-circuit evaluate the if statement, don't do the | |
| 1941 // semantic analysis of the skipped code. | |
| 1942 // This feature allows a limited form of conditional compilation. | |
| 1943 condition = condition->optimize(WANTflags); | |
| 1944 | |
| 1945 // Evaluate at runtime | |
| 1946 unsigned cs0 = sc->callSuper; | |
| 1947 unsigned cs1; | |
| 1948 | |
| 1949 Scope *scd; | |
| 1950 if (arg) | |
| 1951 { /* Declare arg, which we will set to be the | |
| 1952 * result of condition. | |
| 1953 */ | |
| 1954 ScopeDsymbol *sym = new ScopeDsymbol(); | |
| 1955 sym->parent = sc->scopesym; | |
| 1956 scd = sc->push(sym); | |
| 1957 | |
| 1958 Type *t = arg->type ? arg->type : condition->type; | |
| 1959 match = new VarDeclaration(loc, t, arg->ident, NULL); | |
| 1960 match->noauto = 1; | |
| 1961 match->semantic(scd); | |
| 1962 if (!scd->insert(match)) | |
| 1963 assert(0); | |
| 1964 match->parent = sc->func; | |
| 1965 | |
| 1966 /* Generate: | |
| 1967 * (arg = condition) | |
| 1968 */ | |
| 1969 VarExp *v = new VarExp(0, match); | |
| 1970 condition = new AssignExp(loc, v, condition); | |
| 1971 condition = condition->semantic(scd); | |
| 1972 } | |
| 1973 else | |
| 1974 scd = sc->push(); | |
| 1975 ifbody = ifbody->semantic(scd); | |
| 1976 scd->pop(); | |
| 1977 | |
| 1978 cs1 = sc->callSuper; | |
| 1979 sc->callSuper = cs0; | |
| 1980 if (elsebody) | |
| 1981 elsebody = elsebody->semanticScope(sc, NULL, NULL); | |
| 1982 sc->mergeCallSuper(loc, cs1); | |
| 1983 | |
| 1984 return this; | |
| 1985 } | |
| 1986 | |
| 1987 int IfStatement::usesEH() | |
| 1988 { | |
| 1989 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 1990 } | |
| 1991 | |
| 336 | 1992 int IfStatement::blockExit() |
| 1993 { | |
| 1994 //printf("IfStatement::blockExit(%p)\n", this); | |
| 1995 | |
| 1996 int result = BEnone; | |
| 1997 if (condition->canThrow()) | |
| 1998 result |= BEthrow; | |
| 1999 if (condition->isBool(TRUE)) | |
| 2000 { | |
| 2001 if (ifbody) | |
| 2002 result |= ifbody->blockExit(); | |
| 2003 else | |
| 2004 result |= BEfallthru; | |
| 2005 } | |
| 2006 else if (condition->isBool(FALSE)) | |
| 2007 { | |
| 2008 if (elsebody) | |
| 2009 result |= elsebody->blockExit(); | |
| 2010 else | |
| 2011 result |= BEfallthru; | |
| 2012 } | |
| 2013 else | |
| 2014 { | |
| 2015 if (ifbody) | |
| 2016 result |= ifbody->blockExit(); | |
| 2017 else | |
| 2018 result |= BEfallthru; | |
| 2019 if (elsebody) | |
| 2020 result |= elsebody->blockExit(); | |
| 2021 else | |
| 2022 result |= BEfallthru; | |
| 2023 } | |
| 2024 //printf("IfStatement::blockExit(%p) = x%x\n", this, result); | |
| 2025 return result; | |
| 2026 } | |
| 2027 | |
| 159 | 2028 void IfStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2029 { | |
| 2030 buf->writestring("if ("); | |
| 2031 if (arg) | |
| 2032 { | |
| 2033 if (arg->type) | |
| 2034 arg->type->toCBuffer(buf, arg->ident, hgs); | |
| 2035 else | |
|
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2036 { buf->writestring("auto "); |
| 159 | 2037 buf->writestring(arg->ident->toChars()); |
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2038 } |
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2039 buf->writestring(" = "); |
| 159 | 2040 } |
| 2041 condition->toCBuffer(buf, hgs); | |
| 2042 buf->writebyte(')'); | |
| 2043 buf->writenl(); | |
| 2044 ifbody->toCBuffer(buf, hgs); | |
| 2045 if (elsebody) | |
| 2046 { buf->writestring("else"); | |
| 2047 buf->writenl(); | |
| 2048 elsebody->toCBuffer(buf, hgs); | |
| 2049 } | |
| 2050 } | |
| 2051 | |
| 2052 /******************************** ConditionalStatement ***************************/ | |
| 2053 | |
| 2054 ConditionalStatement::ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody) | |
| 2055 : Statement(loc) | |
| 2056 { | |
| 2057 this->condition = condition; | |
| 2058 this->ifbody = ifbody; | |
| 2059 this->elsebody = elsebody; | |
| 2060 } | |
| 2061 | |
| 2062 Statement *ConditionalStatement::syntaxCopy() | |
| 2063 { | |
| 2064 Statement *e = NULL; | |
| 2065 if (elsebody) | |
| 2066 e = elsebody->syntaxCopy(); | |
| 2067 ConditionalStatement *s = new ConditionalStatement(loc, | |
| 2068 condition->syntaxCopy(), ifbody->syntaxCopy(), e); | |
| 2069 return s; | |
| 2070 } | |
| 2071 | |
| 2072 Statement *ConditionalStatement::semantic(Scope *sc) | |
| 2073 { | |
| 2074 //printf("ConditionalStatement::semantic()\n"); | |
| 2075 | |
| 2076 // If we can short-circuit evaluate the if statement, don't do the | |
| 2077 // semantic analysis of the skipped code. | |
| 2078 // This feature allows a limited form of conditional compilation. | |
| 2079 if (condition->include(sc, NULL)) | |
| 2080 { | |
| 2081 ifbody = ifbody->semantic(sc); | |
| 2082 return ifbody; | |
| 2083 } | |
| 2084 else | |
| 2085 { | |
| 2086 if (elsebody) | |
| 2087 elsebody = elsebody->semantic(sc); | |
| 2088 return elsebody; | |
| 2089 } | |
| 2090 } | |
| 2091 | |
| 2092 Statements *ConditionalStatement::flatten(Scope *sc) | |
| 2093 { | |
| 2094 Statement *s; | |
| 2095 | |
| 2096 if (condition->include(sc, NULL)) | |
| 2097 s = ifbody; | |
| 2098 else | |
| 2099 s = elsebody; | |
| 2100 | |
| 2101 Statements *a = new Statements(); | |
| 2102 a->push(s); | |
| 2103 return a; | |
| 2104 } | |
| 2105 | |
| 2106 int ConditionalStatement::usesEH() | |
| 2107 { | |
| 2108 return (ifbody && ifbody->usesEH()) || (elsebody && elsebody->usesEH()); | |
| 2109 } | |
| 2110 | |
|
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2111 int ConditionalStatement::blockExit() |
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2112 { |
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2113 int result = ifbody->blockExit(); |
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2114 if (elsebody) |
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2115 result |= elsebody->blockExit(); |
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2116 return result; |
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2117 } |
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2118 |
| 159 | 2119 void ConditionalStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2120 { | |
| 2121 condition->toCBuffer(buf, hgs); | |
| 2122 buf->writenl(); | |
| 336 | 2123 buf->writeByte('{'); |
| 2124 buf->writenl(); | |
| 159 | 2125 if (ifbody) |
| 2126 ifbody->toCBuffer(buf, hgs); | |
| 336 | 2127 buf->writeByte('}'); |
| 2128 buf->writenl(); | |
| 159 | 2129 if (elsebody) |
| 2130 { | |
| 2131 buf->writestring("else"); | |
| 2132 buf->writenl(); | |
| 336 | 2133 buf->writeByte('{'); |
| 2134 buf->writenl(); | |
| 159 | 2135 elsebody->toCBuffer(buf, hgs); |
| 336 | 2136 buf->writeByte('}'); |
| 2137 buf->writenl(); | |
| 159 | 2138 } |
| 2139 buf->writenl(); | |
| 2140 } | |
| 2141 | |
| 2142 | |
| 2143 /******************************** PragmaStatement ***************************/ | |
| 2144 | |
| 2145 PragmaStatement::PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body) | |
| 2146 : Statement(loc) | |
| 2147 { | |
| 2148 this->ident = ident; | |
| 2149 this->args = args; | |
| 2150 this->body = body; | |
| 2151 } | |
| 2152 | |
| 2153 Statement *PragmaStatement::syntaxCopy() | |
| 2154 { | |
| 2155 Statement *b = NULL; | |
| 2156 if (body) | |
| 2157 b = body->syntaxCopy(); | |
| 2158 PragmaStatement *s = new PragmaStatement(loc, | |
| 2159 ident, Expression::arraySyntaxCopy(args), b); | |
| 2160 return s; | |
| 2161 } | |
| 2162 | |
| 2163 Statement *PragmaStatement::semantic(Scope *sc) | |
| 2164 { // Should be merged with PragmaDeclaration | |
| 2165 //printf("PragmaStatement::semantic() %s\n", toChars()); | |
| 2166 //printf("body = %p\n", body); | |
| 2167 if (ident == Id::msg) | |
| 2168 { | |
| 2169 if (args) | |
| 2170 { | |
| 2171 for (size_t i = 0; i < args->dim; i++) | |
| 2172 { | |
| 2173 Expression *e = (Expression *)args->data[i]; | |
| 2174 | |
| 2175 e = e->semantic(sc); | |
| 2176 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2177 if (e->op == TOKstring) | |
| 2178 { | |
| 2179 StringExp *se = (StringExp *)e; | |
|
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2180 fprintf(stdmsg, "%.*s", (int)se->len, (char*)se->string); |
| 159 | 2181 } |
| 2182 else | |
| 2183 error("string expected for message, not '%s'", e->toChars()); | |
| 2184 } | |
| 2185 fprintf(stdmsg, "\n"); | |
| 2186 } | |
| 2187 } | |
| 2188 else if (ident == Id::lib) | |
| 2189 { | |
|
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2190 #if 1 |
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2191 /* Should this be allowed? |
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2192 */ |
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2193 error("pragma(lib) not allowed as statement"); |
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2194 #else |
| 159 | 2195 if (!args || args->dim != 1) |
| 2196 error("string expected for library name"); | |
| 2197 else | |
| 2198 { | |
| 2199 Expression *e = (Expression *)args->data[0]; | |
| 2200 | |
| 2201 e = e->semantic(sc); | |
| 2202 e = e->optimize(WANTvalue | WANTinterpret); | |
| 2203 args->data[0] = (void *)e; | |
| 2204 if (e->op != TOKstring) | |
| 2205 error("string expected for library name, not '%s'", e->toChars()); | |
| 2206 else if (global.params.verbose) | |
| 2207 { | |
| 2208 StringExp *se = (StringExp *)e; | |
| 2209 char *name = (char *)mem.malloc(se->len + 1); | |
| 2210 memcpy(name, se->string, se->len); | |
| 2211 name[se->len] = 0; | |
| 2212 printf("library %s\n", name); | |
| 2213 mem.free(name); | |
| 2214 } | |
| 2215 } | |
|
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2216 #endif |
| 159 | 2217 } |
|
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2218 |
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2219 // LDC |
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2220 else if (ident == Id::allow_inline) |
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2221 { |
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2222 sc->func->allowInlining = true; |
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2223 } |
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2224 |
| 159 | 2225 else |
| 2226 error("unrecognized pragma(%s)", ident->toChars()); | |
| 2227 | |
| 2228 if (body) | |
| 2229 { | |
| 2230 body = body->semantic(sc); | |
| 2231 } | |
| 2232 return body; | |
| 2233 } | |
| 2234 | |
| 2235 int PragmaStatement::usesEH() | |
| 2236 { | |
| 2237 return body && body->usesEH(); | |
| 2238 } | |
| 2239 | |
| 336 | 2240 int PragmaStatement::blockExit() |
| 2241 { | |
| 2242 int result = BEfallthru; | |
| 2243 #if 0 // currently, no code is generated for Pragma's, so it's just fallthru | |
| 2244 if (arrayExpressionCanThrow(args)) | |
| 2245 result |= BEthrow; | |
| 2246 if (body) | |
| 2247 result |= body->blockExit(); | |
| 2248 #endif | |
| 2249 return result; | |
| 2250 } | |
| 2251 | |
| 159 | 2252 void PragmaStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2253 { | |
| 2254 buf->writestring("pragma ("); | |
| 2255 buf->writestring(ident->toChars()); | |
| 2256 if (args && args->dim) | |
| 2257 { | |
| 2258 buf->writestring(", "); | |
| 2259 argsToCBuffer(buf, args, hgs); | |
| 2260 } | |
| 2261 buf->writeByte(')'); | |
| 2262 if (body) | |
| 2263 { | |
| 2264 buf->writenl(); | |
| 2265 buf->writeByte('{'); | |
| 2266 buf->writenl(); | |
| 2267 | |
| 2268 body->toCBuffer(buf, hgs); | |
| 2269 | |
| 2270 buf->writeByte('}'); | |
| 2271 buf->writenl(); | |
| 2272 } | |
| 2273 else | |
| 2274 { | |
| 2275 buf->writeByte(';'); | |
| 2276 buf->writenl(); | |
| 2277 } | |
| 2278 } | |
| 2279 | |
| 2280 | |
| 2281 /******************************** StaticAssertStatement ***************************/ | |
| 2282 | |
| 2283 StaticAssertStatement::StaticAssertStatement(StaticAssert *sa) | |
| 2284 : Statement(sa->loc) | |
| 2285 { | |
| 2286 this->sa = sa; | |
| 2287 } | |
| 2288 | |
| 2289 Statement *StaticAssertStatement::syntaxCopy() | |
| 2290 { | |
| 2291 StaticAssertStatement *s = new StaticAssertStatement((StaticAssert *)sa->syntaxCopy(NULL)); | |
| 2292 return s; | |
| 2293 } | |
| 2294 | |
| 2295 Statement *StaticAssertStatement::semantic(Scope *sc) | |
| 2296 { | |
| 2297 sa->semantic2(sc); | |
| 2298 return NULL; | |
| 2299 } | |
| 2300 | |
| 2301 void StaticAssertStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2302 { | |
| 2303 sa->toCBuffer(buf, hgs); | |
| 2304 } | |
| 2305 | |
| 2306 | |
| 2307 /******************************** SwitchStatement ***************************/ | |
| 2308 | |
| 2309 SwitchStatement::SwitchStatement(Loc loc, Expression *c, Statement *b) | |
| 2310 : Statement(loc) | |
| 2311 { | |
| 2312 condition = c; | |
| 2313 body = b; | |
| 2314 sdefault = NULL; | |
| 2315 cases = NULL; | |
| 2316 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
|
2317 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2318 enclosingScopeExit = NULL; |
| 159 | 2319 } |
| 2320 | |
| 2321 Statement *SwitchStatement::syntaxCopy() | |
| 2322 { | |
| 2323 SwitchStatement *s = new SwitchStatement(loc, | |
| 2324 condition->syntaxCopy(), body->syntaxCopy()); | |
| 2325 return s; | |
| 2326 } | |
| 2327 | |
| 2328 Statement *SwitchStatement::semantic(Scope *sc) | |
| 2329 { | |
| 2330 //printf("SwitchStatement::semantic(%p)\n", this); | |
| 2331 assert(!cases); // ensure semantic() is only run once | |
| 2332 | |
|
1159
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Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2333 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2334 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
|
2335 |
| 159 | 2336 condition = condition->semantic(sc); |
| 2337 condition = resolveProperties(sc, condition); | |
| 2338 if (condition->type->isString()) | |
| 2339 { | |
| 2340 // If it's not an array, cast it to one | |
| 2341 if (condition->type->ty != Tarray) | |
| 2342 { | |
| 2343 condition = condition->implicitCastTo(sc, condition->type->nextOf()->arrayOf()); | |
| 2344 } | |
| 2345 } | |
| 2346 else | |
| 2347 { condition = condition->integralPromotions(sc); | |
| 2348 condition->checkIntegral(); | |
| 2349 } | |
| 2350 condition = condition->optimize(WANTvalue); | |
| 2351 | |
| 2352 sc = sc->push(); | |
| 2353 sc->sbreak = this; | |
| 2354 sc->sw = this; | |
| 2355 | |
| 2356 cases = new Array(); | |
| 2357 sc->noctor++; // BUG: should use Scope::mergeCallSuper() for each case instead | |
| 2358 body = body->semantic(sc); | |
| 2359 sc->noctor--; | |
| 2360 | |
| 2361 // Resolve any goto case's with exp | |
| 2362 for (int i = 0; i < gotoCases.dim; i++) | |
| 2363 { | |
| 2364 GotoCaseStatement *gcs = (GotoCaseStatement *)gotoCases.data[i]; | |
| 2365 | |
| 2366 if (!gcs->exp) | |
| 2367 { | |
| 2368 gcs->error("no case statement following goto case;"); | |
| 2369 break; | |
| 2370 } | |
| 2371 | |
| 2372 for (Scope *scx = sc; scx; scx = scx->enclosing) | |
| 2373 { | |
| 2374 if (!scx->sw) | |
| 2375 continue; | |
| 2376 for (int j = 0; j < scx->sw->cases->dim; j++) | |
| 2377 { | |
| 2378 CaseStatement *cs = (CaseStatement *)scx->sw->cases->data[j]; | |
| 2379 | |
| 2380 if (cs->exp->equals(gcs->exp)) | |
| 2381 { | |
| 2382 gcs->cs = cs; | |
| 2383 goto Lfoundcase; | |
| 2384 } | |
| 2385 } | |
| 2386 } | |
| 2387 gcs->error("case %s not found", gcs->exp->toChars()); | |
| 2388 | |
| 2389 Lfoundcase: | |
| 2390 ; | |
| 2391 } | |
| 2392 | |
| 2393 if (!sc->sw->sdefault) | |
| 2394 { hasNoDefault = 1; | |
| 2395 | |
|
1103
b30fe7e1dbb9
- Updated to DMD frontend 1.041.
Tomas Lindquist Olsen <tomas.l.olsen gmail.com>
parents:
945
diff
changeset
|
2396 warning("switch statement has no default"); |
| 159 | 2397 |
| 2398 // Generate runtime error if the default is hit | |
| 2399 Statements *a = new Statements(); | |
| 2400 CompoundStatement *cs; | |
| 2401 Statement *s; | |
| 2402 | |
| 2403 if (global.params.useSwitchError) | |
| 2404 s = new SwitchErrorStatement(loc); | |
| 2405 else | |
| 2406 { Expression *e = new HaltExp(loc); | |
| 2407 s = new ExpStatement(loc, e); | |
| 2408 } | |
| 2409 | |
| 2410 a->reserve(4); | |
| 2411 a->push(body); | |
| 901 | 2412 |
| 2413 // LDC needs semantic to be run on break | |
| 2414 Statement *breakstmt = new BreakStatement(loc, NULL); | |
| 2415 breakstmt->semantic(sc); | |
| 2416 a->push(breakstmt); | |
| 2417 | |
| 159 | 2418 sc->sw->sdefault = new DefaultStatement(loc, s); |
| 2419 a->push(sc->sw->sdefault); | |
| 2420 cs = new CompoundStatement(loc, a); | |
| 2421 body = cs; | |
| 2422 } | |
| 2423 | |
| 2424 sc->pop(); | |
| 2425 return this; | |
| 2426 } | |
| 2427 | |
| 2428 int SwitchStatement::hasBreak() | |
| 2429 { | |
| 2430 return TRUE; | |
| 2431 } | |
| 2432 | |
| 2433 int SwitchStatement::usesEH() | |
| 2434 { | |
| 2435 return body ? body->usesEH() : 0; | |
| 2436 } | |
| 2437 | |
| 336 | 2438 int SwitchStatement::blockExit() |
| 2439 { int result = BEnone; | |
| 2440 if (condition->canThrow()) | |
| 2441 result |= BEthrow; | |
| 2442 | |
| 2443 if (body) | |
| 2444 { result |= body->blockExit(); | |
| 2445 if (result & BEbreak) | |
| 2446 { result |= BEfallthru; | |
| 2447 result &= ~BEbreak; | |
| 2448 } | |
| 2449 } | |
| 2450 else | |
| 2451 result |= BEfallthru; | |
| 2452 | |
| 2453 return result; | |
| 2454 } | |
| 2455 | |
| 159 | 2456 void SwitchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2457 { | |
| 2458 buf->writestring("switch ("); | |
| 2459 condition->toCBuffer(buf, hgs); | |
| 2460 buf->writebyte(')'); | |
| 2461 buf->writenl(); | |
| 2462 if (body) | |
| 2463 { | |
| 2464 if (!body->isScopeStatement()) | |
| 2465 { buf->writebyte('{'); | |
| 2466 buf->writenl(); | |
| 2467 body->toCBuffer(buf, hgs); | |
| 2468 buf->writebyte('}'); | |
| 2469 buf->writenl(); | |
| 2470 } | |
| 2471 else | |
| 2472 { | |
| 2473 body->toCBuffer(buf, hgs); | |
| 2474 } | |
| 2475 } | |
| 2476 } | |
| 2477 | |
| 2478 /******************************** CaseStatement ***************************/ | |
| 2479 | |
| 2480 CaseStatement::CaseStatement(Loc loc, Expression *exp, Statement *s) | |
| 2481 : Statement(loc) | |
| 2482 { | |
| 2483 this->exp = exp; | |
| 2484 this->statement = s; | |
| 2485 cblock = NULL; | |
| 2486 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
|
2487 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
|
2488 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2489 enclosingScopeExit = NULL; |
| 159 | 2490 } |
| 2491 | |
| 2492 Statement *CaseStatement::syntaxCopy() | |
| 2493 { | |
| 2494 CaseStatement *s = new CaseStatement(loc, exp->syntaxCopy(), statement->syntaxCopy()); | |
| 2495 return s; | |
| 2496 } | |
| 2497 | |
| 2498 Statement *CaseStatement::semantic(Scope *sc) | |
| 2499 { SwitchStatement *sw = sc->sw; | |
| 2500 | |
| 2501 //printf("CaseStatement::semantic() %s\n", toChars()); | |
|
1159
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Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2502 |
| 159 | 2503 exp = exp->semantic(sc); |
| 2504 if (sw) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2505 { |
|
1164
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2506 // LDC |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2507 enclosingScopeExit = sc->enclosingScopeExit; |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2508 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
|
2509 { |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2510 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
|
2511 } |
|
166042b48c28
Fix bug in CaseStatement::semantic when there's no enclosing switch.
Christian Kamm <kamm incasoftware de>
parents:
1159
diff
changeset
|
2512 |
| 159 | 2513 exp = exp->implicitCastTo(sc, sw->condition->type); |
| 2514 exp = exp->optimize(WANTvalue | WANTinterpret); | |
| 2515 if (exp->op != TOKstring && exp->op != TOKint64) | |
| 2516 { | |
| 2517 error("case must be a string or an integral constant, not %s", exp->toChars()); | |
| 2518 exp = new IntegerExp(0); | |
| 2519 } | |
| 2520 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2521 for (int i = 0; i < sw->cases->dim; i++) |
| 159 | 2522 { |
| 2523 CaseStatement *cs = (CaseStatement *)sw->cases->data[i]; | |
| 2524 | |
| 2525 //printf("comparing '%s' with '%s'\n", exp->toChars(), cs->exp->toChars()); | |
| 2526 if (cs->exp->equals(exp)) | |
| 2527 { error("duplicate case %s in switch statement", exp->toChars()); | |
| 2528 break; | |
| 2529 } | |
| 2530 } | |
| 2531 | |
| 2532 sw->cases->push(this); | |
| 2533 | |
| 2534 // 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
|
2535 for (size_t i = 0; i < sw->gotoCases.dim; i++) |
| 159 | 2536 { |
| 2537 GotoCaseStatement *gcs = (GotoCaseStatement *)sw->gotoCases.data[i]; | |
| 2538 | |
| 2539 if (!gcs->exp) | |
| 2540 { | |
| 2541 gcs->cs = this; | |
| 2542 sw->gotoCases.remove(i); // remove from array | |
| 2543 } | |
| 2544 } | |
| 2545 } | |
| 2546 else | |
| 2547 error("case not in switch statement"); | |
| 2548 statement = statement->semantic(sc); | |
| 2549 return this; | |
| 2550 } | |
| 2551 | |
| 2552 int CaseStatement::compare(Object *obj) | |
| 2553 { | |
| 2554 // Sort cases so we can do an efficient lookup | |
| 2555 CaseStatement *cs2 = (CaseStatement *)(obj); | |
| 2556 | |
| 2557 return exp->compare(cs2->exp); | |
| 2558 } | |
| 2559 | |
| 2560 int CaseStatement::usesEH() | |
| 2561 { | |
| 2562 return statement->usesEH(); | |
| 2563 } | |
| 2564 | |
| 336 | 2565 int CaseStatement::blockExit() |
| 2566 { | |
| 2567 return statement->blockExit(); | |
| 2568 } | |
| 2569 | |
| 159 | 2570 int CaseStatement::comeFrom() |
| 2571 { | |
| 2572 return TRUE; | |
| 2573 } | |
| 2574 | |
| 2575 void CaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2576 { | |
| 2577 buf->writestring("case "); | |
| 2578 exp->toCBuffer(buf, hgs); | |
| 2579 buf->writebyte(':'); | |
| 2580 buf->writenl(); | |
| 2581 statement->toCBuffer(buf, hgs); | |
| 2582 } | |
| 2583 | |
| 2584 /******************************** DefaultStatement ***************************/ | |
| 2585 | |
| 2586 DefaultStatement::DefaultStatement(Loc loc, Statement *s) | |
| 2587 : Statement(loc) | |
| 2588 { | |
| 2589 this->statement = s; | |
| 2590 #if IN_GCC | |
| 2591 + cblock = NULL; | |
| 2592 #endif | |
| 2593 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
|
2594 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2595 enclosingScopeExit = NULL; |
| 159 | 2596 } |
| 2597 | |
| 2598 Statement *DefaultStatement::syntaxCopy() | |
| 2599 { | |
| 2600 DefaultStatement *s = new DefaultStatement(loc, statement->syntaxCopy()); | |
| 2601 return s; | |
| 2602 } | |
| 2603 | |
| 2604 Statement *DefaultStatement::semantic(Scope *sc) | |
| 2605 { | |
| 336 | 2606 //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
|
2607 |
| 159 | 2608 if (sc->sw) |
| 2609 { | |
| 2610 if (sc->sw->sdefault) | |
| 2611 { | |
| 2612 error("switch statement already has a default"); | |
| 2613 } | |
| 2614 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
|
2615 |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2616 // LDC |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2617 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
|
2618 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
|
2619 { |
|
c6d6a68bb5db
Add back some enclosing scope-exit information to the frontend to produce
Christian Kamm <kamm incasoftware de>
parents:
1141
diff
changeset
|
2620 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
|
2621 } |
| 159 | 2622 } |
| 2623 else | |
| 2624 error("default not in switch statement"); | |
| 2625 statement = statement->semantic(sc); | |
| 2626 return this; | |
| 2627 } | |
| 2628 | |
| 2629 int DefaultStatement::usesEH() | |
| 2630 { | |
| 2631 return statement->usesEH(); | |
| 2632 } | |
| 2633 | |
| 336 | 2634 int DefaultStatement::blockExit() |
| 2635 { | |
| 2636 return statement->blockExit(); | |
| 2637 } | |
| 2638 | |
| 159 | 2639 int DefaultStatement::comeFrom() |
| 2640 { | |
| 2641 return TRUE; | |
| 2642 } | |
| 2643 | |
| 2644 void DefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 2645 { | |
| 2646 buf->writestring("default:\n"); | |
| 2647 statement->toCBuffer(buf, hgs); | |
| 2648 } | |
| 2649 | |
| 2650 /******************************** GotoDefaultStatement ***************************/ | |
| 2651 | |
| 2652 GotoDefaultStatement::GotoDefaultStatement(Loc loc) | |
| 2653 : Statement(loc) | |
| 2654 { | |
| 2655 sw = NULL; | |
| 2656 } | |
| 2657 | |
| 2658 Statement *GotoDefaultStatement::syntaxCopy() | |
| 2659 { | |
| 2660 GotoDefaultStatement *s = new GotoDefaultStatement(loc); | |
| 2661 return s; | |
| 2662 } | |
| 2663 | |
| 2664 Statement *GotoDefaultStatement::semantic(Scope *sc) | |
| 2665 { | |
| 2666 sw = sc->sw; | |
| 2667 if (!sw) | |
| 2668 error("goto default not in switch statement"); | |
| 2669 return this; | |
| 2670 } | |
| 2671 | |
| 336 | 2672 int GotoDefaultStatement::blockExit() |
| 2673 { | |
| 2674 return BEgoto; | |
| 2675 } | |
| 2676 | |
| 159 | 2677 void GotoDefaultStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2678 { | |
| 2679 buf->writestring("goto default;\n"); | |
| 2680 } | |
| 2681 | |
| 2682 /******************************** GotoCaseStatement ***************************/ | |
| 2683 | |
| 2684 GotoCaseStatement::GotoCaseStatement(Loc loc, Expression *exp) | |
| 2685 : Statement(loc) | |
| 2686 { | |
| 2687 cs = NULL; | |
| 2688 this->exp = exp; | |
| 2689 sw = NULL; | |
| 2690 } | |
| 2691 | |
| 2692 Statement *GotoCaseStatement::syntaxCopy() | |
| 2693 { | |
| 2694 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 2695 GotoCaseStatement *s = new GotoCaseStatement(loc, e); | |
| 2696 return s; | |
| 2697 } | |
| 2698 | |
| 2699 Statement *GotoCaseStatement::semantic(Scope *sc) | |
| 2700 { | |
| 2701 if (exp) | |
| 2702 exp = exp->semantic(sc); | |
| 2703 | |
| 2704 if (!sc->sw) | |
| 2705 error("goto case not in switch statement"); | |
| 2706 else | |
| 2707 { | |
| 2708 sw = sc->sw; | |
| 2709 sc->sw->gotoCases.push(this); | |
| 2710 if (exp) | |
| 2711 { | |
| 2712 exp = exp->implicitCastTo(sc, sc->sw->condition->type); | |
| 2713 exp = exp->optimize(WANTvalue); | |
| 2714 } | |
| 2715 } | |
| 2716 return this; | |
| 2717 } | |
| 2718 | |
| 336 | 2719 int GotoCaseStatement::blockExit() |
| 2720 { | |
| 2721 return BEgoto; | |
| 2722 } | |
| 2723 | |
| 159 | 2724 void GotoCaseStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2725 { | |
| 2726 buf->writestring("goto case"); | |
| 2727 if (exp) | |
| 2728 { buf->writebyte(' '); | |
| 2729 exp->toCBuffer(buf, hgs); | |
| 2730 } | |
| 2731 buf->writebyte(';'); | |
| 2732 buf->writenl(); | |
| 2733 } | |
| 2734 | |
| 2735 /******************************** SwitchErrorStatement ***************************/ | |
| 2736 | |
| 2737 SwitchErrorStatement::SwitchErrorStatement(Loc loc) | |
| 2738 : Statement(loc) | |
| 2739 { | |
| 2740 } | |
| 2741 | |
| 336 | 2742 int SwitchErrorStatement::blockExit() |
| 2743 { | |
| 2744 return BEthrow; | |
| 2745 } | |
| 2746 | |
| 159 | 2747 void SwitchErrorStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 2748 { | |
| 2749 buf->writestring("SwitchErrorStatement::toCBuffer()"); | |
| 2750 buf->writenl(); | |
| 2751 } | |
| 2752 | |
| 2753 /******************************** ReturnStatement ***************************/ | |
| 2754 | |
| 2755 ReturnStatement::ReturnStatement(Loc loc, Expression *exp) | |
| 2756 : Statement(loc) | |
| 2757 { | |
| 2758 this->exp = exp; | |
| 2759 } | |
| 2760 | |
| 2761 Statement *ReturnStatement::syntaxCopy() | |
| 2762 { | |
| 2763 Expression *e = NULL; | |
| 2764 if (exp) | |
| 2765 e = exp->syntaxCopy(); | |
| 2766 ReturnStatement *s = new ReturnStatement(loc, e); | |
| 2767 return s; | |
| 2768 } | |
| 2769 | |
| 2770 Statement *ReturnStatement::semantic(Scope *sc) | |
| 2771 { | |
| 2772 //printf("ReturnStatement::semantic() %s\n", toChars()); | |
| 2773 | |
| 2774 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 2775 Scope *scx = sc; | |
| 2776 int implicit0 = 0; | |
| 2777 | |
| 2778 if (sc->fes) | |
| 2779 { | |
| 2780 // Find scope of function foreach is in | |
| 2781 for (; 1; scx = scx->enclosing) | |
| 2782 { | |
| 2783 assert(scx); | |
| 2784 if (scx->func != fd) | |
| 2785 { fd = scx->func; // fd is now function enclosing foreach | |
| 2786 break; | |
| 2787 } | |
| 2788 } | |
| 2789 } | |
| 2790 | |
| 2791 Type *tret = fd->type->nextOf(); | |
| 2792 if (fd->tintro) | |
| 336 | 2793 /* We'll be implicitly casting the return expression to tintro |
| 2794 */ | |
| 159 | 2795 tret = fd->tintro->nextOf(); |
| 2796 Type *tbret = NULL; | |
| 2797 | |
| 2798 if (tret) | |
| 2799 tbret = tret->toBasetype(); | |
| 2800 | |
| 2801 // main() returns 0, even if it returns void | |
| 2802 if (!exp && (!tbret || tbret->ty == Tvoid) && fd->isMain()) | |
| 2803 { implicit0 = 1; | |
| 2804 exp = new IntegerExp(0); | |
| 2805 } | |
| 2806 | |
| 2807 if (sc->incontract || scx->incontract) | |
| 2808 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
|
2809 if (sc->enclosingFinally || scx->enclosingFinally) |
| 159 | 2810 error("return statements cannot be in finally, scope(exit) or scope(success) bodies"); |
| 2811 | |
| 2812 if (fd->isCtorDeclaration()) | |
| 2813 { | |
| 2814 // Constructors implicitly do: | |
| 2815 // return this; | |
| 2816 if (exp && exp->op != TOKthis) | |
| 2817 error("cannot return expression from constructor"); | |
| 2818 exp = new ThisExp(0); | |
| 2819 } | |
| 2820 | |
| 2821 if (!exp) | |
| 2822 fd->nrvo_can = 0; | |
| 2823 | |
| 2824 if (exp) | |
| 2825 { | |
| 2826 fd->hasReturnExp |= 1; | |
| 2827 | |
| 2828 exp = exp->semantic(sc); | |
| 2829 exp = resolveProperties(sc, exp); | |
| 2830 exp = exp->optimize(WANTvalue); | |
| 2831 | |
| 2832 if (fd->nrvo_can && exp->op == TOKvar) | |
| 2833 { VarExp *ve = (VarExp *)exp; | |
| 2834 VarDeclaration *v = ve->var->isVarDeclaration(); | |
| 2835 | |
| 2836 if (!v || v->isOut() || v->isRef()) | |
| 2837 fd->nrvo_can = 0; | |
| 2838 else if (fd->nrvo_var == NULL) | |
| 2839 { if (!v->isDataseg() && !v->isParameter() && v->toParent2() == fd) | |
| 2840 fd->nrvo_var = v; | |
| 2841 else | |
| 2842 fd->nrvo_can = 0; | |
| 2843 } | |
| 2844 else if (fd->nrvo_var != v) | |
| 2845 fd->nrvo_can = 0; | |
| 2846 } | |
| 2847 else | |
| 2848 fd->nrvo_can = 0; | |
| 2849 | |
| 2850 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2851 { | |
| 2852 } | |
| 2853 else if (fd->inferRetType) | |
| 2854 { | |
| 2855 if (fd->type->nextOf()) | |
| 2856 { | |
| 2857 if (!exp->type->equals(fd->type->nextOf())) | |
| 2858 error("mismatched function return type inference of %s and %s", | |
| 2859 exp->type->toChars(), fd->type->nextOf()->toChars()); | |
| 2860 } | |
| 2861 else | |
| 2862 { | |
| 2863 fd->type->next = exp->type; | |
| 2864 fd->type = fd->type->semantic(loc, sc); | |
| 2865 if (!fd->tintro) | |
| 2866 { tret = fd->type->nextOf(); | |
| 2867 tbret = tret->toBasetype(); | |
| 2868 } | |
| 2869 } | |
| 2870 } | |
| 2871 else if (tbret->ty != Tvoid) | |
| 2872 { | |
| 2873 exp = exp->implicitCastTo(sc, tret); | |
| 2874 } | |
| 2875 } | |
| 2876 else if (fd->inferRetType) | |
| 2877 { | |
| 2878 if (fd->type->nextOf()) | |
| 2879 { | |
| 2880 if (fd->type->nextOf()->ty != Tvoid) | |
| 2881 error("mismatched function return type inference of void and %s", | |
| 2882 fd->type->nextOf()->toChars()); | |
| 2883 } | |
| 2884 else | |
| 2885 { | |
| 2886 fd->type->next = Type::tvoid; | |
| 2887 fd->type = fd->type->semantic(loc, sc); | |
| 2888 if (!fd->tintro) | |
| 2889 { tret = Type::tvoid; | |
| 2890 tbret = tret; | |
| 2891 } | |
| 2892 } | |
| 2893 } | |
| 2894 else if (tbret->ty != Tvoid) // if non-void return | |
| 2895 error("return expression expected"); | |
| 2896 | |
| 2897 if (sc->fes) | |
| 2898 { | |
| 2899 Statement *s; | |
| 2900 | |
| 2901 if (exp && !implicit0) | |
| 2902 { | |
| 2903 exp = exp->implicitCastTo(sc, tret); | |
| 2904 } | |
| 2905 if (!exp || exp->op == TOKint64 || exp->op == TOKfloat64 || | |
| 2906 exp->op == TOKimaginary80 || exp->op == TOKcomplex80 || | |
| 2907 exp->op == TOKthis || exp->op == TOKsuper || exp->op == TOKnull || | |
| 2908 exp->op == TOKstring) | |
| 2909 { | |
| 2910 sc->fes->cases.push(this); | |
|
846
bc982f1ad106
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2911 // Construct: return cases.dim+1; |
| 159 | 2912 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 2913 } | |
| 2914 else if (fd->type->nextOf()->toBasetype() == Type::tvoid) | |
| 2915 { | |
| 2916 s = new ReturnStatement(0, NULL); | |
| 2917 sc->fes->cases.push(s); | |
| 2918 | |
| 2919 // Construct: { exp; return cases.dim + 1; } | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2920 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2921 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2922 s = new CompoundStatement(loc, s1, s2); |
| 2923 } | |
| 2924 else | |
| 2925 { | |
| 2926 // Construct: return vresult; | |
| 2927 if (!fd->vresult) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2928 { // Declare vresult |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2929 VarDeclaration *v = new VarDeclaration(loc, tret, Id::result, NULL); |
| 159 | 2930 v->noauto = 1; |
| 2931 v->semantic(scx); | |
| 2932 if (!scx->insert(v)) | |
| 2933 assert(0); | |
| 2934 v->parent = fd; | |
| 2935 fd->vresult = v; | |
| 2936 } | |
| 2937 | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2938 s = new ReturnStatement(0, new VarExp(0, fd->vresult)); |
| 159 | 2939 sc->fes->cases.push(s); |
| 2940 | |
| 2941 // 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
|
2942 exp = new AssignExp(loc, new VarExp(0, fd->vresult), exp); |
| 159 | 2943 exp = exp->semantic(sc); |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2944 Statement *s1 = new ExpStatement(loc, exp); |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2945 Statement *s2 = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); |
| 159 | 2946 s = new CompoundStatement(loc, s1, s2); |
| 2947 } | |
| 2948 return s; | |
| 2949 } | |
| 2950 | |
| 2951 if (exp) | |
| 2952 { | |
| 2953 if (fd->returnLabel && tbret->ty != Tvoid) | |
| 2954 { | |
| 2955 assert(fd->vresult); | |
| 2956 VarExp *v = new VarExp(0, fd->vresult); | |
| 2957 | |
| 2958 exp = new AssignExp(loc, v, exp); | |
| 2959 exp = exp->semantic(sc); | |
| 2960 } | |
| 2961 //exp->dump(0); | |
| 2962 //exp->print(); | |
| 2963 exp->checkEscape(); | |
| 2964 } | |
| 2965 | |
| 2966 /* BUG: need to issue an error on: | |
| 2967 * this | |
| 2968 * { if (x) return; | |
| 2969 * super(); | |
| 2970 * } | |
| 2971 */ | |
| 2972 | |
| 2973 if (sc->callSuper & CSXany_ctor && | |
| 2974 !(sc->callSuper & (CSXthis_ctor | CSXsuper_ctor))) | |
| 2975 error("return without calling constructor"); | |
| 2976 | |
| 2977 sc->callSuper |= CSXreturn; | |
| 2978 | |
| 2979 // See if all returns are instead to be replaced with a goto returnLabel; | |
| 2980 if (fd->returnLabel) | |
| 2981 { | |
| 2982 GotoStatement *gs = new GotoStatement(loc, Id::returnLabel); | |
| 2983 | |
| 2984 gs->label = fd->returnLabel; | |
| 2985 if (exp) | |
|
846
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2986 { /* Replace: return exp; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2987 * with: exp; goto returnLabel; |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2988 */ |
|
bc982f1ad106
Merged DMD 1.037 frontend
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
2989 Statement *s = new ExpStatement(0, exp); |
| 159 | 2990 return new CompoundStatement(loc, s, gs); |
| 2991 } | |
| 2992 return gs; | |
| 2993 } | |
| 2994 | |
| 2995 if (exp && tbret->ty == Tvoid && !fd->isMain()) | |
| 336 | 2996 { |
| 2997 /* Replace: | |
| 2998 * return exp; | |
| 2999 * with: | |
| 3000 * exp; return; | |
| 3001 */ | |
| 3002 Statement *s = new ExpStatement(loc, exp); | |
| 159 | 3003 loc = 0; |
| 3004 exp = NULL; | |
| 3005 return new CompoundStatement(loc, s, this); | |
| 3006 } | |
| 3007 | |
| 3008 return this; | |
| 3009 } | |
| 3010 | |
| 336 | 3011 int ReturnStatement::blockExit() |
| 3012 { int result = BEreturn; | |
| 3013 | |
| 3014 if (exp && exp->canThrow()) | |
| 3015 result |= BEthrow; | |
| 3016 return result; | |
| 3017 } | |
| 3018 | |
| 159 | 3019 void ReturnStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3020 { | |
| 3021 buf->printf("return "); | |
| 3022 if (exp) | |
| 3023 exp->toCBuffer(buf, hgs); | |
| 3024 buf->writeByte(';'); | |
| 3025 buf->writenl(); | |
| 3026 } | |
| 3027 | |
| 3028 /******************************** BreakStatement ***************************/ | |
| 3029 | |
| 3030 BreakStatement::BreakStatement(Loc loc, Identifier *ident) | |
| 3031 : Statement(loc) | |
| 3032 { | |
| 3033 this->ident = ident; | |
| 3034 } | |
| 3035 | |
| 3036 Statement *BreakStatement::syntaxCopy() | |
| 3037 { | |
| 3038 BreakStatement *s = new BreakStatement(loc, ident); | |
| 3039 return s; | |
| 3040 } | |
| 3041 | |
| 3042 Statement *BreakStatement::semantic(Scope *sc) | |
| 3043 { | |
| 336 | 3044 //printf("BreakStatement::semantic()\n"); |
| 159 | 3045 // If: |
| 3046 // break Identifier; | |
| 3047 if (ident) | |
| 3048 { | |
| 3049 Scope *scx; | |
| 3050 FuncDeclaration *thisfunc = sc->func; | |
| 3051 | |
| 3052 for (scx = sc; scx; scx = scx->enclosing) | |
| 3053 { | |
| 3054 LabelStatement *ls; | |
| 3055 | |
| 3056 if (scx->func != thisfunc) // if in enclosing function | |
| 3057 { | |
| 3058 if (sc->fes) // if this is the body of a foreach | |
| 3059 { | |
| 3060 /* Post this statement to the fes, and replace | |
| 3061 * it with a return value that caller will put into | |
| 3062 * a switch. Caller will figure out where the break | |
| 3063 * label actually is. | |
| 3064 * Case numbers start with 2, not 0, as 0 is continue | |
| 3065 * and 1 is break. | |
| 3066 */ | |
| 3067 Statement *s; | |
| 3068 sc->fes->cases.push(this); | |
| 3069 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3070 return s; | |
| 3071 } | |
| 3072 break; // can't break to it | |
| 3073 } | |
| 3074 | |
| 3075 ls = scx->slabel; | |
| 3076 if (ls && ls->ident == ident) | |
| 3077 { | |
| 3078 Statement *s = ls->statement; | |
| 3079 | |
| 3080 if (!s->hasBreak()) | |
| 3081 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
|
3082 if (ls->enclosingFinally != sc->enclosingFinally) |
| 159 | 3083 error("cannot break out of finally block"); |
| 3084 | |
| 3085 this->target = ls; | |
| 3086 return this; | |
| 3087 } | |
| 3088 } | |
| 3089 error("enclosing label '%s' for break not found", ident->toChars()); | |
| 3090 } | |
| 3091 else if (!sc->sbreak) | |
| 3092 { | |
| 3093 if (sc->fes) | |
| 3094 { Statement *s; | |
| 3095 | |
| 3096 // Replace break; with return 1; | |
| 3097 s = new ReturnStatement(0, new IntegerExp(1)); | |
| 3098 return s; | |
| 3099 } | |
| 3100 error("break is not inside a loop or switch"); | |
| 3101 } | |
| 3102 return this; | |
| 3103 } | |
| 3104 | |
| 336 | 3105 int BreakStatement::blockExit() |
| 3106 { | |
| 3107 //printf("BreakStatement::blockExit(%p) = x%x\n", this, ident ? BEgoto : BEbreak); | |
| 3108 return ident ? BEgoto : BEbreak; | |
| 3109 } | |
| 3110 | |
| 159 | 3111 void BreakStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3112 { | |
| 3113 buf->writestring("break"); | |
| 3114 if (ident) | |
| 3115 { buf->writebyte(' '); | |
| 3116 buf->writestring(ident->toChars()); | |
| 3117 } | |
| 3118 buf->writebyte(';'); | |
| 3119 buf->writenl(); | |
| 3120 } | |
| 3121 | |
| 3122 /******************************** ContinueStatement ***************************/ | |
| 3123 | |
| 3124 ContinueStatement::ContinueStatement(Loc loc, Identifier *ident) | |
| 3125 : Statement(loc) | |
| 3126 { | |
| 3127 this->ident = ident; | |
| 3128 } | |
| 3129 | |
| 3130 Statement *ContinueStatement::syntaxCopy() | |
| 3131 { | |
| 3132 ContinueStatement *s = new ContinueStatement(loc, ident); | |
| 3133 return s; | |
| 3134 } | |
| 3135 | |
| 3136 Statement *ContinueStatement::semantic(Scope *sc) | |
| 3137 { | |
| 3138 //printf("ContinueStatement::semantic() %p\n", this); | |
| 3139 if (ident) | |
| 3140 { | |
| 3141 Scope *scx; | |
| 3142 FuncDeclaration *thisfunc = sc->func; | |
| 3143 | |
| 3144 for (scx = sc; scx; scx = scx->enclosing) | |
| 3145 { | |
| 3146 LabelStatement *ls; | |
| 3147 | |
| 3148 if (scx->func != thisfunc) // if in enclosing function | |
| 3149 { | |
| 3150 if (sc->fes) // if this is the body of a foreach | |
| 3151 { | |
| 3152 for (; scx; scx = scx->enclosing) | |
| 3153 { | |
| 3154 ls = scx->slabel; | |
| 3155 if (ls && ls->ident == ident && ls->statement == sc->fes) | |
| 3156 { | |
| 3157 // Replace continue ident; with return 0; | |
| 3158 return new ReturnStatement(0, new IntegerExp(0)); | |
| 3159 } | |
| 3160 } | |
| 3161 | |
| 3162 /* Post this statement to the fes, and replace | |
| 3163 * it with a return value that caller will put into | |
| 3164 * a switch. Caller will figure out where the break | |
| 3165 * label actually is. | |
| 3166 * Case numbers start with 2, not 0, as 0 is continue | |
| 3167 * and 1 is break. | |
| 3168 */ | |
| 3169 Statement *s; | |
| 3170 sc->fes->cases.push(this); | |
| 3171 s = new ReturnStatement(0, new IntegerExp(sc->fes->cases.dim + 1)); | |
| 3172 return s; | |
| 3173 } | |
| 3174 break; // can't continue to it | |
| 3175 } | |
| 3176 | |
| 3177 ls = scx->slabel; | |
| 3178 if (ls && ls->ident == ident) | |
| 3179 { | |
| 3180 Statement *s = ls->statement; | |
| 3181 | |
| 3182 if (!s->hasContinue()) | |
| 3183 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
|
3184 if (ls->enclosingFinally != sc->enclosingFinally) |
| 159 | 3185 error("cannot continue out of finally block"); |
| 3186 | |
| 3187 this->target = ls; | |
| 3188 return this; | |
| 3189 } | |
| 3190 } | |
| 3191 error("enclosing label '%s' for continue not found", ident->toChars()); | |
| 3192 } | |
| 3193 else if (!sc->scontinue) | |
| 3194 { | |
| 3195 if (sc->fes) | |
| 3196 { Statement *s; | |
| 3197 | |
| 3198 // Replace continue; with return 0; | |
| 3199 s = new ReturnStatement(0, new IntegerExp(0)); | |
| 3200 return s; | |
| 3201 } | |
| 3202 error("continue is not inside a loop"); | |
| 3203 } | |
| 3204 return this; | |
| 3205 } | |
| 3206 | |
| 336 | 3207 int ContinueStatement::blockExit() |
| 3208 { | |
| 3209 return ident ? BEgoto : BEcontinue; | |
| 3210 } | |
| 3211 | |
| 159 | 3212 void ContinueStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3213 { | |
| 3214 buf->writestring("continue"); | |
| 3215 if (ident) | |
| 3216 { buf->writebyte(' '); | |
| 3217 buf->writestring(ident->toChars()); | |
| 3218 } | |
| 3219 buf->writebyte(';'); | |
| 3220 buf->writenl(); | |
| 3221 } | |
| 3222 | |
| 3223 /******************************** SynchronizedStatement ***************************/ | |
| 3224 | |
| 3225 SynchronizedStatement::SynchronizedStatement(Loc loc, Expression *exp, Statement *body) | |
| 3226 : Statement(loc) | |
| 3227 { | |
| 3228 this->exp = exp; | |
| 3229 this->body = body; | |
| 3230 this->esync = NULL; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3231 // LDC |
| 309 | 3232 this->llsync = NULL; |
| 159 | 3233 } |
| 3234 | |
| 3235 SynchronizedStatement::SynchronizedStatement(Loc loc, elem *esync, Statement *body) | |
| 3236 : Statement(loc) | |
| 3237 { | |
| 3238 this->exp = NULL; | |
| 3239 this->body = body; | |
| 3240 this->esync = esync; | |
|
664
eef8ac26c66c
Some missed LLVMDC -> LDC.
Christian Kamm <kamm incasoftware de>
parents:
510
diff
changeset
|
3241 // LDC |
| 309 | 3242 this->llsync = NULL; |
| 159 | 3243 } |
| 3244 | |
| 3245 Statement *SynchronizedStatement::syntaxCopy() | |
| 3246 { | |
| 3247 Expression *e = exp ? exp->syntaxCopy() : NULL; | |
| 3248 SynchronizedStatement *s = new SynchronizedStatement(loc, e, body ? body->syntaxCopy() : NULL); | |
| 3249 return s; | |
| 3250 } | |
| 3251 | |
| 3252 Statement *SynchronizedStatement::semantic(Scope *sc) | |
| 3253 { | |
| 3254 if (exp) | |
| 3255 { ClassDeclaration *cd; | |
| 3256 | |
| 3257 exp = exp->semantic(sc); | |
| 3258 exp = resolveProperties(sc, exp); | |
| 3259 cd = exp->type->isClassHandle(); | |
| 3260 if (!cd) | |
| 3261 error("can only synchronize on class objects, not '%s'", exp->type->toChars()); | |
| 3262 else if (cd->isInterfaceDeclaration()) | |
| 3263 { Type *t = new TypeIdentifier(0, Id::Object); | |
| 3264 | |
| 3265 t = t->semantic(0, sc); | |
| 3266 exp = new CastExp(loc, exp, t); | |
| 3267 exp = exp->semantic(sc); | |
| 3268 } | |
| 3269 } | |
| 3270 if (body) | |
| 309 | 3271 { |
|
1141
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3272 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3273 sc->enclosingScopeExit = this; |
|
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3274 body = body->semantic(sc); |
|
f99a3b393c03
Reorganize EnclosingHandlers to require less changes to the frontend and allow us to
Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3275 sc->enclosingScopeExit = oldScopeExit; |
| 309 | 3276 } |
| 159 | 3277 return this; |
| 3278 } | |
| 3279 | |
| 3280 int SynchronizedStatement::hasBreak() | |
| 3281 { | |
| 3282 return FALSE; //TRUE; | |
| 3283 } | |
| 3284 | |
| 3285 int SynchronizedStatement::hasContinue() | |
| 3286 { | |
| 3287 return FALSE; //TRUE; | |
| 3288 } | |
| 3289 | |
| 3290 int SynchronizedStatement::usesEH() | |
| 3291 { | |
| 3292 return TRUE; | |
| 3293 } | |
| 3294 | |
| 336 | 3295 int SynchronizedStatement::blockExit() |
| 3296 { | |
| 3297 return body ? body->blockExit() : BEfallthru; | |
| 3298 } | |
| 3299 | |
| 159 | 3300 void SynchronizedStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3301 { | |
| 3302 buf->writestring("synchronized"); | |
| 3303 if (exp) | |
| 3304 { buf->writebyte('('); | |
| 3305 exp->toCBuffer(buf, hgs); | |
| 3306 buf->writebyte(')'); | |
| 3307 } | |
| 3308 if (body) | |
| 3309 { | |
| 3310 buf->writebyte(' '); | |
| 3311 body->toCBuffer(buf, hgs); | |
| 3312 } | |
| 3313 } | |
| 3314 | |
| 3315 /******************************** WithStatement ***************************/ | |
| 3316 | |
| 3317 WithStatement::WithStatement(Loc loc, Expression *exp, Statement *body) | |
| 3318 : Statement(loc) | |
| 3319 { | |
| 3320 this->exp = exp; | |
| 3321 this->body = body; | |
| 3322 wthis = NULL; | |
| 3323 } | |
| 3324 | |
| 3325 Statement *WithStatement::syntaxCopy() | |
| 3326 { | |
| 3327 WithStatement *s = new WithStatement(loc, exp->syntaxCopy(), body ? body->syntaxCopy() : NULL); | |
| 3328 return s; | |
| 3329 } | |
| 3330 | |
| 3331 Statement *WithStatement::semantic(Scope *sc) | |
| 3332 { ScopeDsymbol *sym; | |
| 3333 Initializer *init; | |
| 3334 | |
| 3335 //printf("WithStatement::semantic()\n"); | |
| 3336 exp = exp->semantic(sc); | |
| 3337 exp = resolveProperties(sc, exp); | |
| 3338 if (exp->op == TOKimport) | |
| 3339 { ScopeExp *es = (ScopeExp *)exp; | |
| 3340 | |
| 3341 sym = es->sds; | |
| 3342 } | |
| 3343 else if (exp->op == TOKtype) | |
| 3344 { TypeExp *es = (TypeExp *)exp; | |
| 3345 | |
| 3346 sym = es->type->toDsymbol(sc)->isScopeDsymbol(); | |
| 3347 if (!sym) | |
| 3348 { error("%s has no members", es->toChars()); | |
| 3349 body = body->semantic(sc); | |
| 3350 return this; | |
| 3351 } | |
| 3352 } | |
| 3353 else | |
| 3354 { Type *t = exp->type; | |
| 3355 | |
| 3356 assert(t); | |
| 3357 t = t->toBasetype(); | |
| 3358 if (t->isClassHandle()) | |
| 3359 { | |
| 3360 init = new ExpInitializer(loc, exp); | |
| 3361 wthis = new VarDeclaration(loc, exp->type, Id::withSym, init); | |
| 3362 wthis->semantic(sc); | |
| 3363 | |
| 3364 sym = new WithScopeSymbol(this); | |
| 3365 sym->parent = sc->scopesym; | |
| 3366 } | |
| 3367 else if (t->ty == Tstruct) | |
| 3368 { | |
| 3369 Expression *e = exp->addressOf(sc); | |
| 3370 init = new ExpInitializer(loc, e); | |
| 3371 wthis = new VarDeclaration(loc, e->type, Id::withSym, init); | |
| 3372 wthis->semantic(sc); | |
| 3373 sym = new WithScopeSymbol(this); | |
| 3374 sym->parent = sc->scopesym; | |
| 3375 } | |
| 3376 else | |
| 3377 { error("with expressions must be class objects, not '%s'", exp->type->toChars()); | |
| 3378 return NULL; | |
| 3379 } | |
| 3380 } | |
| 3381 sc = sc->push(sym); | |
| 3382 | |
| 3383 if (body) | |
| 3384 body = body->semantic(sc); | |
| 3385 | |
| 3386 sc->pop(); | |
| 3387 | |
| 3388 return this; | |
| 3389 } | |
| 3390 | |
| 3391 void WithStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3392 { | |
| 3393 buf->writestring("with ("); | |
| 3394 exp->toCBuffer(buf, hgs); | |
| 3395 buf->writestring(")\n"); | |
| 3396 if (body) | |
| 3397 body->toCBuffer(buf, hgs); | |
| 3398 } | |
| 3399 | |
| 3400 int WithStatement::usesEH() | |
| 3401 { | |
| 3402 return body ? body->usesEH() : 0; | |
| 3403 } | |
| 3404 | |
| 336 | 3405 int WithStatement::blockExit() |
| 3406 { | |
| 3407 int result = BEnone; | |
| 3408 if (exp->canThrow()) | |
| 3409 result = BEthrow; | |
| 3410 if (body) | |
| 3411 result |= body->blockExit(); | |
| 3412 else | |
| 3413 result |= BEfallthru; | |
| 3414 return result; | |
| 3415 } | |
| 3416 | |
| 159 | 3417 /******************************** TryCatchStatement ***************************/ |
| 3418 | |
| 3419 TryCatchStatement::TryCatchStatement(Loc loc, Statement *body, Array *catches) | |
| 3420 : Statement(loc) | |
| 3421 { | |
| 3422 this->body = body; | |
| 3423 this->catches = catches; | |
| 3424 } | |
| 3425 | |
| 3426 Statement *TryCatchStatement::syntaxCopy() | |
| 3427 { | |
| 3428 Array *a = new Array(); | |
| 3429 a->setDim(catches->dim); | |
| 3430 for (int i = 0; i < a->dim; i++) | |
| 3431 { Catch *c; | |
| 3432 | |
| 3433 c = (Catch *)catches->data[i]; | |
| 3434 c = c->syntaxCopy(); | |
| 3435 a->data[i] = c; | |
| 3436 } | |
| 3437 TryCatchStatement *s = new TryCatchStatement(loc, body->syntaxCopy(), a); | |
| 3438 return s; | |
| 3439 } | |
| 3440 | |
| 3441 Statement *TryCatchStatement::semantic(Scope *sc) | |
| 3442 { | |
| 3443 body = body->semanticScope(sc, NULL /*this*/, NULL); | |
| 3444 | |
| 336 | 3445 /* Even if body is NULL, still do semantic analysis on catches |
| 3446 */ | |
| 3447 for (size_t i = 0; i < catches->dim; i++) | |
| 3448 { Catch *c = (Catch *)catches->data[i]; | |
| 159 | 3449 c->semantic(sc); |
| 3450 | |
| 3451 // Determine if current catch 'hides' any previous catches | |
| 336 | 3452 for (size_t j = 0; j < i; j++) |
| 159 | 3453 { Catch *cj = (Catch *)catches->data[j]; |
| 3454 char *si = c->loc.toChars(); | |
| 3455 char *sj = cj->loc.toChars(); | |
| 3456 | |
| 3457 if (c->type->toBasetype()->implicitConvTo(cj->type->toBasetype())) | |
| 3458 error("catch at %s hides catch at %s", sj, si); | |
| 3459 } | |
| 3460 } | |
| 3461 return this; | |
| 3462 } | |
| 3463 | |
| 3464 int TryCatchStatement::hasBreak() | |
| 3465 { | |
| 3466 return FALSE; //TRUE; | |
| 3467 } | |
| 3468 | |
| 3469 int TryCatchStatement::usesEH() | |
| 3470 { | |
| 3471 return TRUE; | |
| 3472 } | |
| 3473 | |
| 336 | 3474 int TryCatchStatement::blockExit() |
| 3475 { int result; | |
| 3476 | |
| 3477 assert(body); | |
| 3478 result = body->blockExit(); | |
| 3479 | |
| 3480 for (size_t i = 0; i < catches->dim; i++) | |
| 3481 { | |
| 3482 Catch *c = (Catch *)catches->data[i]; | |
| 3483 result |= c->blockExit(); | |
| 3484 } | |
| 3485 return result; | |
| 3486 } | |
| 3487 | |
| 159 | 3488 void TryCatchStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3489 { | |
| 3490 buf->writestring("try"); | |
| 3491 buf->writenl(); | |
| 3492 if (body) | |
| 3493 body->toCBuffer(buf, hgs); | |
| 336 | 3494 for (size_t i = 0; i < catches->dim; i++) |
| 159 | 3495 { |
| 3496 Catch *c = (Catch *)catches->data[i]; | |
| 3497 c->toCBuffer(buf, hgs); | |
| 3498 } | |
| 3499 } | |
| 3500 | |
| 3501 /******************************** Catch ***************************/ | |
| 3502 | |
| 3503 Catch::Catch(Loc loc, Type *t, Identifier *id, Statement *handler) | |
| 3504 { | |
| 3505 //printf("Catch(%s, loc = %s)\n", id->toChars(), loc.toChars()); | |
| 3506 this->loc = loc; | |
| 3507 this->type = t; | |
| 3508 this->ident = id; | |
| 3509 this->handler = handler; | |
| 3510 var = NULL; | |
| 3511 } | |
| 3512 | |
| 3513 Catch *Catch::syntaxCopy() | |
| 3514 { | |
| 3515 Catch *c = new Catch(loc, | |
| 3516 (type ? type->syntaxCopy() : NULL), | |
| 3517 ident, | |
| 3518 (handler ? handler->syntaxCopy() : NULL)); | |
| 3519 return c; | |
| 3520 } | |
| 3521 | |
| 3522 void Catch::semantic(Scope *sc) | |
| 3523 { ScopeDsymbol *sym; | |
| 3524 | |
| 3525 //printf("Catch::semantic(%s)\n", ident->toChars()); | |
| 3526 | |
| 3527 #ifndef IN_GCC | |
|
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diff
changeset
|
3528 if (sc->enclosingFinally) |
| 159 | 3529 { |
| 3530 /* This is because the _d_local_unwind() gets the stack munged | |
| 3531 * up on this. The workaround is to place any try-catches into | |
| 3532 * a separate function, and call that. | |
| 3533 * To fix, have the compiler automatically convert the finally | |
| 3534 * body into a nested function. | |
| 3535 */ | |
| 3536 error(loc, "cannot put catch statement inside finally block"); | |
| 3537 } | |
| 3538 #endif | |
| 3539 | |
| 3540 sym = new ScopeDsymbol(); | |
| 3541 sym->parent = sc->scopesym; | |
| 3542 sc = sc->push(sym); | |
| 3543 | |
| 3544 if (!type) | |
| 3545 type = new TypeIdentifier(0, Id::Object); | |
| 3546 type = type->semantic(loc, sc); | |
| 3547 if (!type->toBasetype()->isClassHandle()) | |
| 3548 error("can only catch class objects, not '%s'", type->toChars()); | |
| 3549 else if (ident) | |
| 3550 { | |
| 3551 var = new VarDeclaration(loc, type, ident, NULL); | |
| 3552 var->parent = sc->parent; | |
| 3553 sc->insert(var); | |
| 3554 } | |
| 3555 handler = handler->semantic(sc); | |
| 3556 | |
| 3557 sc->pop(); | |
| 3558 } | |
| 3559 | |
| 336 | 3560 int Catch::blockExit() |
| 3561 { | |
| 3562 return handler ? handler->blockExit() : BEfallthru; | |
| 3563 } | |
| 3564 | |
| 159 | 3565 void Catch::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3566 { | |
| 3567 buf->writestring("catch"); | |
| 3568 if (type) | |
| 3569 { buf->writebyte('('); | |
| 3570 type->toCBuffer(buf, ident, hgs); | |
| 3571 buf->writebyte(')'); | |
| 3572 } | |
| 3573 buf->writenl(); | |
| 3574 buf->writebyte('{'); | |
| 3575 buf->writenl(); | |
| 336 | 3576 if (handler) |
| 3577 handler->toCBuffer(buf, hgs); | |
| 159 | 3578 buf->writebyte('}'); |
| 3579 buf->writenl(); | |
| 3580 } | |
| 3581 | |
| 3582 /****************************** TryFinallyStatement ***************************/ | |
| 3583 | |
| 3584 TryFinallyStatement::TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody) | |
| 3585 : Statement(loc) | |
| 3586 { | |
| 3587 this->body = body; | |
| 3588 this->finalbody = finalbody; | |
| 3589 } | |
| 3590 | |
| 3591 Statement *TryFinallyStatement::syntaxCopy() | |
| 3592 { | |
| 3593 TryFinallyStatement *s = new TryFinallyStatement(loc, | |
| 3594 body->syntaxCopy(), finalbody->syntaxCopy()); | |
| 3595 return s; | |
| 3596 } | |
| 3597 | |
| 3598 Statement *TryFinallyStatement::semantic(Scope *sc) | |
| 3599 { | |
| 3600 //printf("TryFinallyStatement::semantic()\n"); | |
| 3601 | |
|
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diff
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|
3602 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
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parents:
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diff
changeset
|
3603 sc->enclosingScopeExit = this; |
| 159 | 3604 body = body->semantic(sc); |
|
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diff
changeset
|
3605 sc->enclosingScopeExit = oldScopeExit; |
| 159 | 3606 |
| 3607 sc = sc->push(); | |
|
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diff
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|
3608 sc->enclosingFinally = this; |
| 159 | 3609 sc->sbreak = NULL; |
| 3610 sc->scontinue = NULL; // no break or continue out of finally block | |
| 3611 finalbody = finalbody->semantic(sc); | |
| 3612 sc->pop(); | |
| 3613 return this; | |
| 3614 } | |
| 3615 | |
| 3616 void TryFinallyStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3617 { | |
| 3618 buf->printf("try\n{\n"); | |
| 3619 body->toCBuffer(buf, hgs); | |
| 3620 buf->printf("}\nfinally\n{\n"); | |
| 3621 finalbody->toCBuffer(buf, hgs); | |
| 3622 buf->writeByte('}'); | |
| 3623 buf->writenl(); | |
| 3624 } | |
| 3625 | |
| 3626 int TryFinallyStatement::hasBreak() | |
| 3627 { | |
| 3628 return FALSE; //TRUE; | |
| 3629 } | |
| 3630 | |
| 3631 int TryFinallyStatement::hasContinue() | |
| 3632 { | |
| 3633 return FALSE; //TRUE; | |
| 3634 } | |
| 3635 | |
| 3636 int TryFinallyStatement::usesEH() | |
| 3637 { | |
| 3638 return TRUE; | |
| 3639 } | |
| 3640 | |
| 336 | 3641 int TryFinallyStatement::blockExit() |
| 3642 { | |
|
875
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
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diff
changeset
|
3643 if (body) |
|
330f999ade44
Merged DMD 1.038
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
846
diff
changeset
|
3644 return body->blockExit(); |
|
330f999ade44
Merged DMD 1.038
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diff
changeset
|
3645 return BEfallthru; |
| 336 | 3646 } |
| 3647 | |
| 159 | 3648 |
| 3649 /****************************** OnScopeStatement ***************************/ | |
| 3650 | |
| 3651 OnScopeStatement::OnScopeStatement(Loc loc, TOK tok, Statement *statement) | |
| 3652 : Statement(loc) | |
| 3653 { | |
| 3654 this->tok = tok; | |
| 3655 this->statement = statement; | |
| 3656 } | |
| 3657 | |
| 3658 Statement *OnScopeStatement::syntaxCopy() | |
| 3659 { | |
| 3660 OnScopeStatement *s = new OnScopeStatement(loc, | |
| 3661 tok, statement->syntaxCopy()); | |
| 3662 return s; | |
| 3663 } | |
| 3664 | |
| 3665 Statement *OnScopeStatement::semantic(Scope *sc) | |
| 3666 { | |
| 3667 /* semantic is called on results of scopeCode() */ | |
| 3668 return this; | |
| 3669 } | |
| 3670 | |
| 336 | 3671 int OnScopeStatement::blockExit() |
| 3672 { // At this point, this statement is just an empty placeholder | |
| 3673 return BEfallthru; | |
| 3674 } | |
| 3675 | |
| 159 | 3676 void OnScopeStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3677 { | |
| 3678 buf->writestring(Token::toChars(tok)); | |
| 3679 buf->writebyte(' '); | |
| 3680 statement->toCBuffer(buf, hgs); | |
| 3681 } | |
| 3682 | |
| 3683 int OnScopeStatement::usesEH() | |
| 3684 { | |
| 3685 return (tok != TOKon_scope_success); | |
| 3686 } | |
| 3687 | |
| 3688 void OnScopeStatement::scopeCode(Statement **sentry, Statement **sexception, Statement **sfinally) | |
| 3689 { | |
| 3690 //printf("OnScopeStatement::scopeCode()\n"); | |
| 3691 //print(); | |
| 3692 *sentry = NULL; | |
| 3693 *sexception = NULL; | |
| 3694 *sfinally = NULL; | |
| 3695 switch (tok) | |
| 3696 { | |
| 3697 case TOKon_scope_exit: | |
| 3698 *sfinally = statement; | |
| 3699 break; | |
| 3700 | |
| 3701 case TOKon_scope_failure: | |
| 3702 *sexception = statement; | |
| 3703 break; | |
| 3704 | |
| 3705 case TOKon_scope_success: | |
| 3706 { | |
| 3707 /* Create: | |
| 3708 * sentry: int x = 0; | |
| 3709 * sexception: x = 1; | |
| 3710 * sfinally: if (!x) statement; | |
| 3711 */ | |
|
846
bc982f1ad106
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Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
794
diff
changeset
|
3712 Identifier *id = Lexer::uniqueId("__os"); |
| 159 | 3713 |
| 3714 ExpInitializer *ie = new ExpInitializer(loc, new IntegerExp(0)); | |
| 3715 VarDeclaration *v = new VarDeclaration(loc, Type::tint32, id, ie); | |
| 3716 *sentry = new DeclarationStatement(loc, v); | |
| 3717 | |
| 3718 Expression *e = new IntegerExp(1); | |
| 3719 e = new AssignExp(0, new VarExp(0, v), e); | |
| 3720 *sexception = new ExpStatement(0, e); | |
| 3721 | |
| 3722 e = new VarExp(0, v); | |
| 3723 e = new NotExp(0, e); | |
| 3724 *sfinally = new IfStatement(0, NULL, e, statement, NULL); | |
| 3725 | |
| 3726 break; | |
| 3727 } | |
| 3728 | |
| 3729 default: | |
| 3730 assert(0); | |
| 3731 } | |
| 3732 } | |
| 3733 | |
| 3734 /******************************** ThrowStatement ***************************/ | |
| 3735 | |
| 3736 ThrowStatement::ThrowStatement(Loc loc, Expression *exp) | |
| 3737 : Statement(loc) | |
| 3738 { | |
| 3739 this->exp = exp; | |
| 3740 } | |
| 3741 | |
| 3742 Statement *ThrowStatement::syntaxCopy() | |
| 3743 { | |
| 3744 ThrowStatement *s = new ThrowStatement(loc, exp->syntaxCopy()); | |
| 3745 return s; | |
| 3746 } | |
| 3747 | |
| 3748 Statement *ThrowStatement::semantic(Scope *sc) | |
| 3749 { | |
| 3750 //printf("ThrowStatement::semantic()\n"); | |
| 3751 | |
| 3752 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3753 fd->hasReturnExp |= 2; | |
| 3754 | |
| 3755 if (sc->incontract) | |
| 3756 error("Throw statements cannot be in contracts"); | |
| 3757 exp = exp->semantic(sc); | |
| 3758 exp = resolveProperties(sc, exp); | |
| 3759 if (!exp->type->toBasetype()->isClassHandle()) | |
| 3760 error("can only throw class objects, not type %s", exp->type->toChars()); | |
| 3761 return this; | |
| 3762 } | |
| 3763 | |
| 336 | 3764 int ThrowStatement::blockExit() |
| 3765 { | |
| 3766 return BEthrow; // obviously | |
| 3767 } | |
| 3768 | |
| 159 | 3769 void ThrowStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3770 { | |
| 3771 buf->printf("throw "); | |
| 3772 exp->toCBuffer(buf, hgs); | |
| 3773 buf->writeByte(';'); | |
| 3774 buf->writenl(); | |
| 3775 } | |
| 3776 | |
| 3777 /******************************** VolatileStatement **************************/ | |
| 3778 | |
| 3779 VolatileStatement::VolatileStatement(Loc loc, Statement *statement) | |
| 3780 : Statement(loc) | |
| 3781 { | |
| 3782 this->statement = statement; | |
| 3783 } | |
| 3784 | |
| 3785 Statement *VolatileStatement::syntaxCopy() | |
| 3786 { | |
| 3787 VolatileStatement *s = new VolatileStatement(loc, | |
| 3788 statement ? statement->syntaxCopy() : NULL); | |
| 3789 return s; | |
| 3790 } | |
| 3791 | |
| 3792 Statement *VolatileStatement::semantic(Scope *sc) | |
| 3793 { | |
| 309 | 3794 if (statement) |
| 3795 { | |
|
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diff
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|
3796 Statement* oldScopeExit = sc->enclosingScopeExit; |
|
f99a3b393c03
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Christian Kamm <kamm incasoftware de>
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diff
changeset
|
3797 sc->enclosingScopeExit = this; |
|
f99a3b393c03
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Christian Kamm <kamm incasoftware de>
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diff
changeset
|
3798 statement = statement->semantic(sc); |
|
f99a3b393c03
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Christian Kamm <kamm incasoftware de>
parents:
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diff
changeset
|
3799 sc->enclosingScopeExit = oldScopeExit; |
| 309 | 3800 } |
| 159 | 3801 return this; |
| 3802 } | |
| 3803 | |
| 3804 Statements *VolatileStatement::flatten(Scope *sc) | |
| 3805 { | |
| 3806 Statements *a; | |
| 3807 | |
| 3808 a = statement ? statement->flatten(sc) : NULL; | |
| 3809 if (a) | |
| 3810 { for (int i = 0; i < a->dim; i++) | |
| 3811 { Statement *s = (Statement *)a->data[i]; | |
| 3812 | |
| 3813 s = new VolatileStatement(loc, s); | |
| 3814 a->data[i] = s; | |
| 3815 } | |
| 3816 } | |
| 3817 | |
| 3818 return a; | |
| 3819 } | |
| 3820 | |
| 336 | 3821 int VolatileStatement::blockExit() |
| 3822 { | |
| 3823 return statement ? statement->blockExit() : BEfallthru; | |
| 3824 } | |
| 3825 | |
| 159 | 3826 void VolatileStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3827 { | |
| 3828 buf->writestring("volatile"); | |
| 3829 if (statement) | |
| 3830 { if (statement->isScopeStatement()) | |
| 3831 buf->writenl(); | |
| 3832 else | |
| 3833 buf->writebyte(' '); | |
| 3834 statement->toCBuffer(buf, hgs); | |
| 3835 } | |
| 3836 } | |
| 3837 | |
| 3838 | |
| 3839 /******************************** GotoStatement ***************************/ | |
| 3840 | |
| 3841 GotoStatement::GotoStatement(Loc loc, Identifier *ident) | |
| 3842 : Statement(loc) | |
| 3843 { | |
| 3844 this->ident = ident; | |
| 3845 this->label = NULL; | |
|
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diff
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|
3846 this->enclosingFinally = NULL; |
|
f99a3b393c03
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Christian Kamm <kamm incasoftware de>
parents:
1133
diff
changeset
|
3847 this->enclosingScopeExit = NULL; |
| 159 | 3848 } |
| 3849 | |
| 3850 Statement *GotoStatement::syntaxCopy() | |
| 3851 { | |
| 3852 GotoStatement *s = new GotoStatement(loc, ident); | |
| 3853 return s; | |
| 3854 } | |
| 3855 | |
| 3856 Statement *GotoStatement::semantic(Scope *sc) | |
| 3857 { FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3858 | |
| 3859 //printf("GotoStatement::semantic()\n"); | |
|
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|
3860 enclosingFinally = sc->enclosingFinally; |
|
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|
3861 enclosingScopeExit = sc->enclosingScopeExit; |
|
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|
3862 |
| 159 | 3863 label = fd->searchLabel(ident); |
| 3864 if (!label->statement && sc->fes) | |
| 3865 { | |
| 3866 /* Either the goto label is forward referenced or it | |
| 3867 * is in the function that the enclosing foreach is in. | |
| 3868 * Can't know yet, so wrap the goto in a compound statement | |
| 3869 * so we can patch it later, and add it to a 'look at this later' | |
| 3870 * list. | |
| 3871 */ | |
| 3872 Statements *a = new Statements(); | |
| 3873 Statement *s; | |
| 3874 | |
| 3875 a->push(this); | |
| 3876 s = new CompoundStatement(loc, a); | |
| 3877 sc->fes->gotos.push(s); // 'look at this later' list | |
| 3878 return s; | |
| 3879 } | |
|
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|
3880 if (label->statement && label->statement->enclosingFinally != sc->enclosingFinally) |
| 159 | 3881 error("cannot goto in or out of finally block"); |
| 3882 return this; | |
| 3883 } | |
| 3884 | |
| 336 | 3885 int GotoStatement::blockExit() |
| 3886 { | |
| 3887 //printf("GotoStatement::blockExit(%p)\n", this); | |
| 3888 return BEgoto; | |
| 3889 } | |
| 3890 | |
| 159 | 3891 void GotoStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) |
| 3892 { | |
| 3893 buf->writestring("goto "); | |
| 3894 buf->writestring(ident->toChars()); | |
| 3895 buf->writebyte(';'); | |
| 3896 buf->writenl(); | |
| 3897 } | |
| 3898 | |
| 3899 /******************************** LabelStatement ***************************/ | |
| 3900 | |
| 3901 LabelStatement::LabelStatement(Loc loc, Identifier *ident, Statement *statement) | |
| 3902 : Statement(loc) | |
| 3903 { | |
| 3904 this->ident = ident; | |
| 3905 this->statement = statement; | |
|
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|
3906 this->enclosingFinally = NULL; |
|
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|
3907 this->enclosingScopeExit = NULL; |
| 159 | 3908 this->lblock = NULL; |
| 3909 this->isReturnLabel = 0; | |
|
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|
3910 this->asmLabel = false; |
| 159 | 3911 } |
| 3912 | |
| 3913 Statement *LabelStatement::syntaxCopy() | |
| 3914 { | |
| 3915 LabelStatement *s = new LabelStatement(loc, ident, statement->syntaxCopy()); | |
| 3916 return s; | |
| 3917 } | |
| 3918 | |
| 3919 Statement *LabelStatement::semantic(Scope *sc) | |
| 3920 { LabelDsymbol *ls; | |
| 3921 FuncDeclaration *fd = sc->parent->isFuncDeclaration(); | |
| 3922 | |
| 3923 //printf("LabelStatement::semantic()\n"); | |
| 3924 ls = fd->searchLabel(ident); | |
| 3925 if (ls->statement) | |
| 3926 error("Label '%s' already defined", ls->toChars()); | |
| 3927 else | |
| 3928 ls->statement = this; | |
|
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|
3929 |
|
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|
3930 enclosingFinally = sc->enclosingFinally; |
|
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|
3931 enclosingScopeExit = sc->enclosingScopeExit; |
|
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|
3932 |
| 159 | 3933 sc = sc->push(); |
| 3934 sc->scopesym = sc->enclosing->scopesym; | |
| 3935 sc->callSuper |= CSXlabel; | |
| 3936 sc->slabel = this; | |
| 3937 if (statement) | |
| 3938 statement = statement->semantic(sc); | |
| 3939 sc->pop(); | |
|
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|
3940 |
|
664
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|
3941 // LDC put in labmap |
|
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|
3942 fd->labmap[ident->toChars()] = this; |
|
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|
3943 |
| 159 | 3944 return this; |
| 3945 } | |
| 3946 | |
| 3947 Statements *LabelStatement::flatten(Scope *sc) | |
| 3948 { | |
| 3949 Statements *a = NULL; | |
| 3950 | |
| 3951 if (statement) | |
| 3952 { | |
| 3953 a = statement->flatten(sc); | |
| 3954 if (a) | |
| 3955 { | |
| 3956 if (!a->dim) | |
| 3957 { | |
| 3958 a->push(new ExpStatement(loc, NULL)); | |
| 3959 } | |
| 3960 Statement *s = (Statement *)a->data[0]; | |
| 3961 | |
| 3962 s = new LabelStatement(loc, ident, s); | |
| 3963 a->data[0] = s; | |
| 3964 } | |
| 3965 } | |
| 3966 | |
| 3967 return a; | |
| 3968 } | |
| 3969 | |
| 3970 | |
| 3971 int LabelStatement::usesEH() | |
| 3972 { | |
| 3973 return statement ? statement->usesEH() : FALSE; | |
| 3974 } | |
| 3975 | |
| 336 | 3976 int LabelStatement::blockExit() |
| 3977 { | |
| 3978 //printf("LabelStatement::blockExit(%p)\n", this); | |
| 3979 return statement ? statement->blockExit() : BEfallthru; | |
| 3980 } | |
| 3981 | |
| 159 | 3982 int LabelStatement::comeFrom() |
| 3983 { | |
| 3984 //printf("LabelStatement::comeFrom()\n"); | |
| 3985 return TRUE; | |
| 3986 } | |
| 3987 | |
| 3988 void LabelStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs) | |
| 3989 { | |
| 3990 buf->writestring(ident->toChars()); | |
| 3991 buf->writebyte(':'); | |
| 3992 buf->writenl(); | |
| 3993 if (statement) | |
| 3994 statement->toCBuffer(buf, hgs); | |
| 3995 } | |
| 3996 | |
| 3997 | |
| 3998 /******************************** LabelDsymbol ***************************/ | |
| 3999 | |
| 4000 LabelDsymbol::LabelDsymbol(Identifier *ident) | |
| 4001 : Dsymbol(ident) | |
| 4002 { | |
| 4003 statement = NULL; | |
| 4004 } | |
| 4005 | |
| 4006 LabelDsymbol *LabelDsymbol::isLabel() // is this a LabelDsymbol()? | |
| 4007 { | |
| 4008 return this; | |
| 4009 } |