Output.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2013  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "cycript.hpp"
  23 #include "Parser.hpp"
  24
  25 #include <sstream>
  26
  27 void CYOutput::Terminate() {
  28     out_ << ';';
  29     mode_ = NoMode;
  30 }
  31
  32 CYOutput &CYOutput::operator <<(char rhs) {
  33     if (rhs == ' ' || rhs == '\n')
  34         if (pretty_)
  35             out_ << rhs;
  36         else goto done;
  37     else if (rhs == '\t')
  38         if (pretty_)
  39             for (unsigned i(0); i != indent_; ++i)
  40                 out_ << "    ";
  41         else goto done;
  42     else if (rhs == '\r') {
  43         if (right_) {
  44             out_ << '\n';
  45             right_ = false;
  46         } goto done;
  47     } else goto work;
  48
  49     right_ = true;
  50     mode_ = NoMode;
  51     goto done;
  52
  53   work:
  54     if (mode_ == Terminated && rhs != '}') {
  55         right_ = true;
  56         out_ << ';';
  57     }
  58
  59     if (rhs == ';') {
  60         if (pretty_)
  61             goto none;
  62         else {
  63             mode_ = Terminated;
  64             goto done;
  65         }
  66     } else if (rhs == '+') {
  67         if (mode_ == NoPlus)
  68             out_ << ' ';
  69         mode_ = NoPlus;
  70     } else if (rhs == '-') {
  71         if (mode_ == NoHyphen)
  72             out_ << ' ';
  73         mode_ = NoHyphen;
  74     } else if (WordEndRange_[rhs]) {
  75         if (mode_ == NoLetter)
  76             out_ << ' ';
  77         mode_ = NoLetter;
  78     } else none:
  79         mode_ = NoMode;
  80
  81     right_ = true;
  82     out_ << rhs;
  83   done:
  84     return *this;
  85 }
  86
  87 CYOutput &CYOutput::operator <<(const char *rhs) {
  88     size_t size(strlen(rhs));
  89
  90     if (size == 1)
  91         return *this << *rhs;
  92
  93     if (mode_ == Terminated)
  94         out_ << ';';
  95     else if (
  96         mode_ == NoPlus && *rhs == '+' ||
  97         mode_ == NoHyphen && *rhs == '-' ||
  98         mode_ == NoLetter && WordEndRange_[*rhs]
  99     )
 100         out_ << ' ';
 101
 102     if (WordEndRange_[rhs[size - 1]])
 103         mode_ = NoLetter;
 104     else
 105         mode_ = NoMode;
 106
 107     right_ = true;
 108     out_ << rhs;
 109     return *this;
 110 }
 111
 112 void CYArgument::Output(CYOutput &out) const {
 113     if (name_ != NULL) {
 114         out << *name_;
 115         if (value_ != NULL)
 116             out << ':' << ' ';
 117     }
 118     if (value_ != NULL)
 119         value_->Output(out, CYAssign::Precedence_, CYNoFlags);
 120     if (next_ != NULL) {
 121         if (next_->name_ == NULL)
 122             out << ',';
 123         out << ' ' << *next_;
 124     }
 125 }
 126
 127 void CYArray::Output(CYOutput &out, CYFlags flags) const {
 128     out << '[' << elements_ << ']';
 129 }
 130
 131 void CYArrayComprehension::Output(CYOutput &out, CYFlags flags) const {
 132     out << '[' << *expression_ << ' ' << *comprehensions_ << ']';
 133 }
 134
 135 void CYAssignment::Output(CYOutput &out, CYFlags flags) const {
 136     lhs_->Output(out, Precedence() - 1, CYLeft(flags) | CYNoRightHand);
 137     out << ' ' << Operator() << ' ';
 138     rhs_->Output(out, Precedence(), CYRight(flags));
 139 }
 140
 141 void CYBlock::Output(CYOutput &out) const {
 142     out << '{' << '\n';
 143     ++out.indent_;
 144     if (statements_ != NULL)
 145         statements_->Multiple(out);
 146     --out.indent_;
 147     out << '\t' << '}';
 148 }
 149
 150 void CYBlock::Output(CYOutput &out, CYFlags flags) const {
 151     if (statements_ == NULL)
 152         out.Terminate();
 153     else if (statements_->next_ == NULL)
 154         statements_->Single(out, flags);
 155     else
 156         Output(out);
 157 }
 158
 159 void CYBoolean::Output(CYOutput &out, CYFlags flags) const {
 160     out << (Value() ? "true" : "false");
 161 }
 162
 163 void CYBreak::Output(CYOutput &out, CYFlags flags) const {
 164     out << "break";
 165     if (label_ != NULL)
 166         out << ' ' << *label_;
 167     out << ';';
 168 }
 169
 170 void CYCall::Output(CYOutput &out, CYFlags flags) const {
 171     bool protect((flags & CYNoCall) != 0);
 172     if (protect)
 173         out << '(';
 174     function_->Output(out, Precedence(), protect ? CYNoFlags : flags);
 175     out << '(' << arguments_ << ')';
 176     if (protect)
 177         out << ')';
 178 }
 179
 180 namespace cy {
 181 namespace Syntax {
 182
 183 void Catch::Output(CYOutput &out) const {
 184     out << ' ' << "catch" << ' ' << '(' << *name_ << ')' << ' ' << code_;
 185 }
 186
 187 } }
 188
 189 void CYComment::Output(CYOutput &out, CYFlags flags) const {
 190     out << '\r';
 191     out.out_ << value_;
 192     out.right_ = true;
 193     out << '\r';
 194 }
 195
 196 void CYCompound::Output(CYOutput &out, CYFlags flags) const {
 197     if (CYExpression *expression = expressions_)
 198         if (CYExpression *next = expression->next_) {
 199             expression->Output(out, CYLeft(flags));
 200             CYFlags center(CYCenter(flags));
 201             while (next != NULL) {
 202                 expression = next;
 203                 out << ',' << ' ';
 204                 next = expression->next_;
 205                 CYFlags right(next != NULL ? center : CYRight(flags));
 206                 expression->Output(out, right);
 207             }
 208         } else
 209             expression->Output(out, flags);
 210 }
 211
 212 void CYCondition::Output(CYOutput &out, CYFlags flags) const {
 213     test_->Output(out, Precedence() - 1, CYLeft(flags));
 214     out << ' ' << '?' << ' ';
 215     if (true_ != NULL)
 216         true_->Output(out, CYAssign::Precedence_, CYNoFlags);
 217     out << ' ' << ':' << ' ';
 218     false_->Output(out, CYAssign::Precedence_, CYRight(flags));
 219 }
 220
 221 void CYContinue::Output(CYOutput &out, CYFlags flags) const {
 222     out << "continue";
 223     if (label_ != NULL)
 224         out << ' ' << *label_;
 225     out << ';';
 226 }
 227
 228 void CYClause::Output(CYOutput &out) const {
 229     if (case_ != NULL)
 230         out << "case" << ' ' << *case_;
 231     else
 232         out << "default";
 233     out << ':' << '\n';
 234     if (statements_ != NULL)
 235         statements_->Multiple(out);
 236     out << next_;
 237 }
 238
 239 void CYDebugger::Output(CYOutput &out, CYFlags flags) const {
 240     out << "debugger" << ';';
 241 }
 242
 243 void CYDeclaration::ForIn(CYOutput &out, CYFlags flags) const {
 244     out << "var";
 245     Output(out, CYRight(flags));
 246 }
 247
 248 void CYDeclaration::Output(CYOutput &out, CYFlags flags) const {
 249     out << *identifier_;
 250     //out.out_ << ':' << identifier_->usage_ << '#' << identifier_->offset_;
 251     if (initialiser_ != NULL) {
 252         out << ' ' << '=' << ' ';
 253         initialiser_->Output(out, CYAssign::Precedence_, CYRight(flags));
 254     }
 255 }
 256
 257 void CYForDeclarations::Output(CYOutput &out, CYFlags flags) const {
 258     out << "var";
 259     Output(out, CYRight(flags));
 260 }
 261
 262 void CYDeclarations::Output(CYOutput &out) const {
 263     Output(out, CYNoFlags);
 264 }
 265
 266 void CYDeclarations::Output(CYOutput &out, CYFlags flags) const {
 267     const CYDeclarations *declaration(this);
 268     bool first(true);
 269
 270     for (;;) {
 271         CYDeclarations *next(declaration->next_);
 272
 273         CYFlags jacks(first ? CYLeft(flags) : next == NULL ? CYRight(flags) : CYCenter(flags));
 274         first = false;
 275         declaration->declaration_->Output(out, jacks);
 276
 277         if (next == NULL)
 278             break;
 279
 280         out << ',' << ' ';
 281         declaration = next;
 282     }
 283 }
 284
 285 void CYDirectMember::Output(CYOutput &out, CYFlags flags) const {
 286     object_->Output(out, Precedence(), CYLeft(flags) | CYNoInteger);
 287     if (const char *word = property_->Word())
 288         out << '.' << word;
 289     else
 290         out << '[' << *property_ << ']';
 291 }
 292
 293 void CYDoWhile::Output(CYOutput &out, CYFlags flags) const {
 294     out << "do";
 295     code_->Single(out, CYCenter(flags));
 296     out << "while" << ' ' << '(' << *test_ << ')';
 297 }
 298
 299 void CYElement::Output(CYOutput &out) const {
 300     if (value_ != NULL)
 301         value_->Output(out, CYAssign::Precedence_, CYNoFlags);
 302     if (next_ != NULL || value_ == NULL) {
 303         out << ',';
 304         if (next_ != NULL && next_->value_ != NULL)
 305             out << ' ';
 306     }
 307     if (next_ != NULL)
 308         next_->Output(out);
 309 }
 310
 311 void CYEmpty::Output(CYOutput &out, CYFlags flags) const {
 312     out.Terminate();
 313 }
 314
 315 void CYExpress::Output(CYOutput &out, CYFlags flags) const {
 316     expression_->Output(out, flags | CYNoBF);
 317     out << ';';
 318 }
 319
 320 void CYExpression::ClassName(CYOutput &out, bool object) const {
 321     Output(out, CYAssign::Precedence_, CYNoFlags);
 322 }
 323
 324 void CYExpression::ForIn(CYOutput &out, CYFlags flags) const {
 325     Output(out, flags | CYNoRightHand);
 326 }
 327
 328 void CYExpression::Output(CYOutput &out) const {
 329     Output(out, CYNoFlags);
 330 }
 331
 332 void CYExpression::Output(CYOutput &out, int precedence, CYFlags flags) const {
 333     if (precedence < Precedence() || (flags & CYNoRightHand) != 0 && RightHand())
 334         out << '(' << *this << ')';
 335     else
 336         Output(out, flags);
 337 }
 338
 339 void CYFatArrow::Output(CYOutput &out, CYFlags flags) const {
 340     out << '(' << parameters_ << ')' << ' ' << "=>" << ' ' << code_;
 341 }
 342
 343 void CYFinally::Output(CYOutput &out) const {
 344     out << ' ' << "finally" << ' ' << code_;
 345 }
 346
 347 void CYFor::Output(CYOutput &out, CYFlags flags) const {
 348     out << "for" << ' ' << '(';
 349     if (initialiser_ != NULL)
 350         initialiser_->Output(out, CYNoIn);
 351     out.Terminate();
 352     if (test_ != NULL)
 353         out << ' ';
 354     out << test_;
 355     out.Terminate();
 356     if (increment_ != NULL)
 357         out << ' ';
 358     out << increment_;
 359     out << ')';
 360     code_->Single(out, CYRight(flags));
 361 }
 362
 363 void CYForOf::Output(CYOutput &out, CYFlags flags) const {
 364     out << "for" << ' ' << "each" << ' ' << '(';
 365     initialiser_->ForIn(out, CYNoIn);
 366     out << "in" << *set_ << ')';
 367     code_->Single(out, CYRight(flags));
 368 }
 369
 370 void CYForOfComprehension::Output(CYOutput &out) const {
 371     out << "for" << ' ' << "each" << ' ' << '(' << *name_ << ' ' << "in" << ' ' << *set_ << ')' << next_;
 372 }
 373
 374 void CYForIn::Output(CYOutput &out, CYFlags flags) const {
 375     out << "for" << ' ' << '(';
 376     if (initialiser_ != NULL)
 377         initialiser_->ForIn(out, CYNoIn);
 378     out << "in" << *set_ << ')';
 379     code_->Single(out, CYRight(flags));
 380 }
 381
 382 void CYForInComprehension::Output(CYOutput &out) const {
 383     out << "for" << ' ' << '(' << *name_ << ' ' << "in" << ' ' << *set_ << ')';
 384 }
 385
 386 void CYFunction::Output(CYOutput &out, CYFlags flags) const {
 387     // XXX: one could imagine using + here to save a byte
 388     bool protect((flags & CYNoFunction) != 0);
 389     if (protect)
 390         out << '(';
 391     out << "function";
 392     if (name_ != NULL)
 393         out << ' ' << *name_;
 394     out << '(' << parameters_ << ')';
 395     out << ' ' << code_;
 396     if (protect)
 397         out << ')';
 398 }
 399
 400 void CYFunctionExpression::Output(CYOutput &out, CYFlags flags) const {
 401     CYFunction::Output(out, flags);
 402 }
 403
 404 void CYFunctionStatement::Output(CYOutput &out, CYFlags flags) const {
 405     CYFunction::Output(out, flags);
 406 }
 407
 408 void CYFunctionParameter::Output(CYOutput &out) const {
 409     initialiser_->Output(out, CYNoFlags);
 410     if (next_ != NULL)
 411         out << ',' << ' ' << *next_;
 412 }
 413
 414 const char *CYIdentifier::Word() const {
 415     return replace_ == NULL || replace_ == this ? CYWord::Word() : replace_->Word();
 416 }
 417
 418 void CYIf::Output(CYOutput &out, CYFlags flags) const {
 419     bool protect(false);
 420     if (false_ == NULL && (flags & CYNoDangle) != 0) {
 421         protect = true;
 422         out << '{';
 423     }
 424
 425     out << "if" << ' ' << '(' << *test_ << ')';
 426
 427     CYFlags right(protect ? CYNoFlags : CYRight(flags));
 428
 429     CYFlags jacks(CYNoDangle);
 430     if (false_ == NULL)
 431         jacks |= right;
 432     else
 433         jacks |= protect ? CYNoFlags : CYCenter(flags);
 434
 435     true_->Single(out, jacks);
 436
 437     if (false_ != NULL) {
 438         out << '\t' << "else";
 439         false_->Single(out, right);
 440     }
 441
 442     if (protect)
 443         out << '}';
 444 }
 445
 446 void CYIfComprehension::Output(CYOutput &out) const {
 447     out << "if" << ' ' << '(' << *test_ << ')' << next_;
 448 }
 449
 450 void CYIndirectMember::Output(CYOutput &out, CYFlags flags) const {
 451     object_->Output(out, Precedence(), CYLeft(flags));
 452     if (const char *word = property_->Word())
 453         out << "->" << word;
 454     else
 455         out << "->" << '[' << *property_ << ']';
 456 }
 457
 458 void CYInfix::Output(CYOutput &out, CYFlags flags) const {
 459     const char *name(Operator());
 460     bool protect((flags & CYNoIn) != 0 && strcmp(name, "in") == 0);
 461     if (protect)
 462         out << '(';
 463     CYFlags left(protect ? CYNoFlags : CYLeft(flags));
 464     lhs_->Output(out, Precedence(), left);
 465     out << ' ' << name << ' ';
 466     CYFlags right(protect ? CYNoFlags : CYRight(flags));
 467     rhs_->Output(out, Precedence() - 1, right);
 468     if (protect)
 469         out << ')';
 470 }
 471
 472 void CYLabel::Output(CYOutput &out, CYFlags flags) const {
 473     out << *name_ << ':' << ' ';
 474     statement_->Single(out, CYRight(flags));
 475 }
 476
 477 void CYTypeArrayOf::Output(CYOutput &out, CYIdentifier *identifier) const {
 478     next_->Output(out, Precedence(), identifier);
 479     out << '[';
 480     out << size_;
 481     out << ']';
 482 }
 483
 484 void CYTypeConstant::Output(CYOutput &out, CYIdentifier *identifier) const {
 485     out << "const";
 486     next_->Output(out, Precedence(), identifier);
 487 }
 488
 489 void CYTypeFunctionWith::Output(CYOutput &out, CYIdentifier *identifier) const {
 490     next_->Output(out, Precedence(), identifier);
 491     out << '(' << parameters_ << ')';
 492 }
 493
 494 void CYTypePointerTo::Output(CYOutput &out, CYIdentifier *identifier) const {
 495     out << '*';
 496     next_->Output(out, Precedence(), identifier);
 497 }
 498
 499 void CYTypeVolatile::Output(CYOutput &out, CYIdentifier *identifier) const {
 500     out << "volatile";
 501     next_->Output(out, Precedence(), identifier);
 502 }
 503
 504 void CYTypeModifier::Output(CYOutput &out, int precedence, CYIdentifier *identifier) const {
 505     if (this == NULL) {
 506         out << identifier;
 507         return;
 508     }
 509
 510     bool protect(precedence > Precedence());
 511
 512     if (protect)
 513         out << '(';
 514     Output(out, identifier);
 515     if (protect)
 516         out << ')';
 517 }
 518
 519 void CYTypedIdentifier::Output(CYOutput &out) const {
 520     type_->Output(out, 0, CYNoFlags);
 521     modifier_->Output(out, 0, identifier_);
 522 }
 523
 524 void CYEncodedType::Output(CYOutput &out, CYFlags flags) const {
 525     out << "@encode(" << typed_ << ")";
 526 }
 527
 528 void CYTypedParameter::Output(CYOutput &out) const {
 529     out << typed_;
 530     if (next_ != NULL)
 531         out << ',' << ' ' << next_;
 532 }
 533
 534 void CYLambda::Output(CYOutput &out, CYFlags flags) const {
 535     // XXX: this is seriously wrong
 536     out << "[](";
 537     out << ")->";
 538     out << "{";
 539     out << "}";
 540 }
 541
 542 void CYTypeDefinition::Output(CYOutput &out, CYFlags flags) const {
 543     out << "typedef" << *typed_;
 544 }
 545
 546 void CYLetStatement::Output(CYOutput &out, CYFlags flags) const {
 547     out << "let" << ' ' << '(' << *declarations_ << ')';
 548     code_->Single(out, CYRight(flags));
 549 }
 550
 551 namespace cy {
 552 namespace Syntax {
 553
 554 void New::Output(CYOutput &out, CYFlags flags) const {
 555     out << "new" << ' ';
 556     CYFlags jacks(CYNoCall | CYCenter(flags));
 557     constructor_->Output(out, Precedence(), jacks);
 558     if (arguments_ != NULL)
 559         out << '(' << *arguments_ << ')';
 560 }
 561
 562 } }
 563
 564 void CYNull::Output(CYOutput &out, CYFlags flags) const {
 565     CYWord::Output(out);
 566 }
 567
 568 void CYNumber::Output(CYOutput &out, CYFlags flags) const {
 569     std::ostringstream str;
 570     CYNumerify(str, Value());
 571     std::string value(str.str());
 572     out << value.c_str();
 573     // XXX: this should probably also handle hex conversions and exponents
 574     if ((flags & CYNoInteger) != 0 && value.find('.') == std::string::npos)
 575         out << '.';
 576 }
 577
 578 void CYNumber::PropertyName(CYOutput &out) const {
 579     Output(out, CYNoFlags);
 580 }
 581
 582 void CYObject::Output(CYOutput &out, CYFlags flags) const {
 583     bool protect((flags & CYNoBrace) != 0);
 584     if (protect)
 585         out << '(';
 586     out << '{' << '\n';
 587     ++out.indent_;
 588     out << properties_;
 589     --out.indent_;
 590     out << '\t' << '}';
 591     if (protect)
 592         out << ')';
 593 }
 594
 595 void CYPostfix::Output(CYOutput &out, CYFlags flags) const {
 596     lhs_->Output(out, Precedence(), CYLeft(flags));
 597     out << Operator();
 598 }
 599
 600 void CYPrefix::Output(CYOutput &out, CYFlags flags) const {
 601     const char *name(Operator());
 602     out << name;
 603     if (Alphabetic())
 604         out << ' ';
 605     rhs_->Output(out, Precedence(), CYRight(flags));
 606 }
 607
 608 void CYProgram::Output(CYOutput &out) const {
 609     if (statements_ != NULL)
 610         statements_->Multiple(out);
 611 }
 612
 613 void CYProperty::Output(CYOutput &out) const {
 614     out << '\t';
 615     name_->PropertyName(out);
 616     out << ':' << ' ';
 617     value_->Output(out, CYAssign::Precedence_, CYNoFlags);
 618     if (next_ != NULL)
 619         out << ',' << '\n' << *next_;
 620     else
 621         out << '\n';
 622 }
 623
 624 void CYRegEx::Output(CYOutput &out, CYFlags flags) const {
 625     out << Value();
 626 }
 627
 628 void CYReturn::Output(CYOutput &out, CYFlags flags) const {
 629     out << "return";
 630     if (value_ != NULL)
 631         out << ' ' << *value_;
 632     out << ';';
 633 }
 634
 635 void CYRubyBlock::Output(CYOutput &out, CYFlags flags) const {
 636     call_->Output(out, CYLeft(flags));
 637     out << ' ';
 638     proc_->Output(out, CYRight(flags));
 639 }
 640
 641 void CYRubyProc::Output(CYOutput &out, CYFlags flags) const {
 642     // XXX: this is not outputting the parameters
 643     out << code_;
 644 }
 645
 646 void CYStatement::Multiple(CYOutput &out, CYFlags flags) const {
 647     bool first(true);
 648     CYForEach (next, this) {
 649         bool last(next->next_ == NULL);
 650         CYFlags jacks(first ? last ? flags : CYLeft(flags) : last ? CYRight(flags) : CYCenter(flags));
 651         first = false;
 652         out << '\t';
 653         next->Output(out, jacks);
 654         out << '\n';
 655     }
 656 }
 657
 658 void CYStatement::Single(CYOutput &out, CYFlags flags) const {
 659     if (this == NULL)
 660         return out.Terminate();
 661
 662     _assert(next_ == NULL);
 663     out << '\n';
 664     ++out.indent_;
 665     out << '\t';
 666     Output(out, flags);
 667     out << '\n';
 668     --out.indent_;
 669 }
 670
 671 void CYString::Output(CYOutput &out, CYFlags flags) const {
 672     std::ostringstream str;
 673     CYStringify(str, value_, size_);
 674     out << str.str().c_str();
 675 }
 676
 677 void CYString::PropertyName(CYOutput &out) const {
 678     if (const char *word = Word())
 679         out << word;
 680     else
 681         out << *this;
 682 }
 683
 684 static const char *Reserved_[] = {
 685     "false", "null", "true",
 686
 687     "break", "case", "catch", "continue", "default",
 688     "delete", "do", "else", "finally", "for", "function",
 689     "if", "in", "instanceof", "new", "return", "switch",
 690     "this", "throw", "try", "typeof", "var", "void",
 691     "while", "with",
 692
 693     "debugger", "const",
 694
 695     "class", "enum", "export", "extends", "import", "super",
 696
 697     "abstract", "boolean", "byte", "char", "double", "final",
 698     "float", "goto", "int", "long", "native", "short",
 699     "synchronized", "throws", "transient", "volatile",
 700
 701     "let", "yield",
 702
 703     NULL
 704 };
 705
 706 const char *CYString::Word() const {
 707     if (size_ == 0 || !WordStartRange_[value_[0]])
 708         return NULL;
 709     for (size_t i(1); i != size_; ++i)
 710         if (!WordEndRange_[value_[i]])
 711             return NULL;
 712     const char *value(Value());
 713     for (const char **reserved(Reserved_); *reserved != NULL; ++reserved)
 714         if (strcmp(*reserved, value) == 0)
 715             return NULL;
 716     return value;
 717 }
 718
 719 void CYSwitch::Output(CYOutput &out, CYFlags flags) const {
 720     out << "switch" << ' ' << '(' << *value_ << ')' << ' ' << '{';
 721     out << clauses_;
 722     out << '}';
 723 }
 724
 725 void CYThis::Output(CYOutput &out, CYFlags flags) const {
 726     CYWord::Output(out);
 727 }
 728
 729 namespace cy {
 730 namespace Syntax {
 731
 732 void Throw::Output(CYOutput &out, CYFlags flags) const {
 733     out << "throw";
 734     if (value_ != NULL)
 735         out << ' ' << *value_;
 736     out << ';';
 737 }
 738
 739 void Try::Output(CYOutput &out, CYFlags flags) const {
 740     out << "try" << ' ' << code_ << catch_ << finally_;
 741 }
 742
 743 } }
 744
 745 void CYVar::Output(CYOutput &out, CYFlags flags) const {
 746     out << "var";
 747     declarations_->Output(out, flags);
 748     out << ';';
 749 }
 750
 751 void CYVariable::Output(CYOutput &out, CYFlags flags) const {
 752     out << *name_;
 753 }
 754
 755 void CYWhile::Output(CYOutput &out, CYFlags flags) const {
 756     out << "while" << '(' << *test_ << ')';
 757     code_->Single(out, CYRight(flags));
 758 }
 759
 760 void CYWith::Output(CYOutput &out, CYFlags flags) const {
 761     out << "with" << '(' << *scope_ << ')';
 762     code_->Single(out, CYRight(flags));
 763 }
 764
 765 void CYWord::ClassName(CYOutput &out, bool object) const {
 766     if (object)
 767         out << "objc_getClass(";
 768     out << '"' << Word() << '"';
 769     if (object)
 770         out << ')';
 771 }
 772
 773 void CYWord::Output(CYOutput &out) const {
 774     out << Word();
 775     if (out.options_.verbose_)
 776         out.out_ << '@' << this;
 777 }
 778
 779 void CYWord::PropertyName(CYOutput &out) const {
 780     Output(out);
 781 }
 782
 783 const char *CYWord::Word() const {
 784     return word_;
 785 }