Output.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "cycript.hpp"
  23
  24 #include <sstream>
  25
  26 #include "Syntax.hpp"
  27
  28 void CYOutput::Terminate() {
  29     operator ()(';');
  30     mode_ = NoMode;
  31 }
  32
  33 CYOutput &CYOutput::operator <<(char rhs) {
  34     if (rhs == ' ' || rhs == '\n')
  35         if (pretty_)
  36             operator ()(rhs);
  37         else goto done;
  38     else if (rhs == '\t')
  39         if (pretty_)
  40             for (unsigned i(0); i != indent_; ++i)
  41                 operator ()("    ", 4);
  42         else goto done;
  43     else if (rhs == '\r') {
  44         if (right_) {
  45             operator ()('\n');
  46             right_ = false;
  47         } goto done;
  48     } else goto work;
  49
  50     right_ = true;
  51     mode_ = NoMode;
  52     goto done;
  53
  54   work:
  55     if (mode_ == Terminated && rhs != '}') {
  56         right_ = true;
  57         operator ()(';');
  58     }
  59
  60     if (rhs == ';') {
  61         if (pretty_)
  62             goto none;
  63         else {
  64             mode_ = Terminated;
  65             goto done;
  66         }
  67     } else if (rhs == '+') {
  68         if (mode_ == NoPlus)
  69             operator ()(' ');
  70         mode_ = NoPlus;
  71     } else if (rhs == '-') {
  72         if (mode_ == NoHyphen)
  73             operator ()(' ');
  74         mode_ = NoHyphen;
  75     } else if (WordEndRange_[rhs]) {
  76         if (mode_ == NoLetter)
  77             operator ()(' ');
  78         mode_ = NoLetter;
  79     } else none:
  80         mode_ = NoMode;
  81
  82     right_ = true;
  83     operator ()(rhs);
  84   done:
  85     return *this;
  86 }
  87
  88 CYOutput &CYOutput::operator <<(const char *rhs) {
  89     size_t size(strlen(rhs));
  90
  91     if (size == 1)
  92         return *this << *rhs;
  93
  94     if (mode_ == Terminated)
  95         operator ()(';');
  96     else if (
  97         mode_ == NoPlus && *rhs == '+' ||
  98         mode_ == NoHyphen && *rhs == '-' ||
  99         mode_ == NoLetter && WordEndRange_[*rhs]
 100     )
 101         operator ()(' ');
 102
 103     char last(rhs[size - 1]);
 104     if (WordEndRange_[last] || last == '/')
 105         mode_ = NoLetter;
 106     else
 107         mode_ = NoMode;
 108
 109     right_ = true;
 110     operator ()(rhs, size);
 111     return *this;
 112 }
 113
 114 void CYArgument::Output(CYOutput &out) const {
 115     if (name_ != NULL) {
 116         out << *name_;
 117         if (value_ != NULL)
 118             out << ':' << ' ';
 119     }
 120     if (value_ != NULL)
 121         value_->Output(out, CYAssign::Precedence_, CYNoFlags);
 122     if (next_ != NULL) {
 123         out << ',';
 124         out << ' ' << *next_;
 125     }
 126 }
 127
 128 void CYArray::Output(CYOutput &out, CYFlags flags) const {
 129     out << '[' << elements_ << ']';
 130 }
 131
 132 void CYArrayComprehension::Output(CYOutput &out, CYFlags flags) const {
 133     out << '[' << *expression_ << ' ' << *comprehensions_ << ']';
 134 }
 135
 136 void CYAssignment::Output(CYOutput &out, CYFlags flags) const {
 137     lhs_->Output(out, Precedence() - 1, CYLeft(flags) | CYNoRightHand);
 138     out << ' ' << Operator() << ' ';
 139     rhs_->Output(out, Precedence(), CYRight(flags));
 140 }
 141
 142 void CYBlock::Output(CYOutput &out, CYFlags flags) const {
 143     out << '{' << '\n';
 144     ++out.indent_;
 145     out << code_;
 146     --out.indent_;
 147     out << '\t' << '}';
 148 }
 149
 150 void CYBoolean::Output(CYOutput &out, CYFlags flags) const {
 151     out << '!' << (Value() ? "0" : "1");
 152     if ((flags & CYNoInteger) != 0)
 153         out << '.';
 154 }
 155
 156 void CYBreak::Output(CYOutput &out, CYFlags flags) const {
 157     out << "break";
 158     if (label_ != NULL)
 159         out << ' ' << *label_;
 160     out << ';';
 161 }
 162
 163 void CYCall::Output(CYOutput &out, CYFlags flags) const {
 164     bool protect((flags & CYNoCall) != 0);
 165     if (protect)
 166         out << '(';
 167     function_->Output(out, Precedence(), protect ? CYNoFlags : flags);
 168     out << '(' << arguments_ << ')';
 169     if (protect)
 170         out << ')';
 171 }
 172
 173 namespace cy {
 174 namespace Syntax {
 175
 176 void Catch::Output(CYOutput &out) const {
 177     out << ' ' << "catch" << ' ' << '(' << *name_ << ')' << ' ';
 178     out << '{' << '\n';
 179     ++out.indent_;
 180     out << code_;
 181     --out.indent_;
 182     out << '\t' << '}';
 183 }
 184
 185 } }
 186
 187 void CYClassExpression::Output(CYOutput &out, CYFlags flags) const {
 188     bool protect((flags & CYNoClass) != 0);
 189     if (protect)
 190         out << '(';
 191     out << "class";
 192     if (name_ != NULL)
 193         out << ' ' << *name_;
 194     out << *tail_;;
 195     if (protect)
 196         out << ')';
 197 }
 198
 199 void CYClassStatement::Output(CYOutput &out, CYFlags flags) const {
 200     out << "class" << ' ' << *name_  << *tail_;
 201 }
 202
 203 void CYClassTail::Output(CYOutput &out) const {
 204     if (extends_ == NULL)
 205         out << ' ';
 206     else {
 207         out << '\n';
 208         ++out.indent_;
 209         out << "extends" << ' ';
 210         extends_->Output(out, CYAssign::Precedence_ - 1, CYNoFlags);
 211         out << '\n';
 212         --out.indent_;
 213     }
 214
 215     out << '{' << '\n';
 216     ++out.indent_;
 217
 218     --out.indent_;
 219     out << '}';
 220 }
 221
 222 void CYCompound::Output(CYOutput &out, CYFlags flags) const {
 223     if (next_ == NULL)
 224         expression_->Output(out, flags);
 225     else {
 226         expression_->Output(out, CYLeft(flags));
 227         out << ',' << ' ';
 228         next_->Output(out, CYRight(flags));
 229     }
 230 }
 231
 232 void CYComputed::PropertyName(CYOutput &out) const {
 233     out << '[';
 234     expression_->Output(out, CYAssign::Precedence_, CYNoFlags);
 235     out << ']';
 236 }
 237
 238 void CYCondition::Output(CYOutput &out, CYFlags flags) const {
 239     test_->Output(out, Precedence() - 1, CYLeft(flags));
 240     out << ' ' << '?' << ' ';
 241     if (true_ != NULL)
 242         true_->Output(out, CYAssign::Precedence_, CYNoFlags);
 243     out << ' ' << ':' << ' ';
 244     false_->Output(out, CYAssign::Precedence_, CYRight(flags));
 245 }
 246
 247 void CYContinue::Output(CYOutput &out, CYFlags flags) const {
 248     out << "continue";
 249     if (label_ != NULL)
 250         out << ' ' << *label_;
 251     out << ';';
 252 }
 253
 254 void CYClause::Output(CYOutput &out) const {
 255     out << '\t';
 256     if (value_ != NULL)
 257         out << "case" << ' ' << *value_;
 258     else
 259         out << "default";
 260     out << ':' << '\n';
 261     ++out.indent_;
 262     out << code_;
 263     --out.indent_;
 264     out << next_;
 265 }
 266
 267 void CYDebugger::Output(CYOutput &out, CYFlags flags) const {
 268     out << "debugger" << ';';
 269 }
 270
 271 void CYBinding::Output(CYOutput &out, CYFlags flags) const {
 272     out << *identifier_;
 273     //out.out_ << ':' << identifier_->usage_ << '#' << identifier_->offset_;
 274     if (initializer_ != NULL) {
 275         out << ' ' << '=' << ' ';
 276         initializer_->Output(out, CYAssign::Precedence_, CYRight(flags));
 277     }
 278 }
 279
 280 void CYBindings::Output(CYOutput &out) const {
 281     Output(out, CYNoFlags);
 282 }
 283
 284 void CYBindings::Output(CYOutput &out, CYFlags flags) const {
 285     const CYBindings *binding(this);
 286     bool first(true);
 287
 288     for (;;) {
 289         CYBindings *next(binding->next_);
 290
 291         CYFlags jacks(first ? CYLeft(flags) : next == NULL ? CYRight(flags) : CYCenter(flags));
 292         first = false;
 293         binding->binding_->Output(out, jacks);
 294
 295         if (next == NULL)
 296             break;
 297
 298         out << ',' << ' ';
 299         binding = next;
 300     }
 301 }
 302
 303 void CYDirectMember::Output(CYOutput &out, CYFlags flags) const {
 304     object_->Output(out, Precedence(), CYLeft(flags) | CYNoInteger);
 305     if (const char *word = property_->Word())
 306         out << '.' << word;
 307     else
 308         out << '[' << *property_ << ']';
 309 }
 310
 311 void CYDoWhile::Output(CYOutput &out, CYFlags flags) const {
 312     out << "do";
 313
 314     unsigned line(out.position_.line);
 315     unsigned indent(out.indent_);
 316     code_->Single(out, CYCenter(flags), CYCompactLong);
 317
 318     if (out.position_.line != line && out.recent_ == indent)
 319         out << ' ';
 320     else
 321         out << '\n' << '\t';
 322
 323     out << "while" << ' ' << '(' << *test_ << ')';
 324 }
 325
 326 void CYElementSpread::Output(CYOutput &out) const {
 327     out << "..." << value_;
 328 }
 329
 330 void CYElementValue::Output(CYOutput &out) const {
 331     if (value_ != NULL)
 332         value_->Output(out, CYAssign::Precedence_, CYNoFlags);
 333     if (next_ != NULL || value_ == NULL) {
 334         out << ',';
 335         if (next_ != NULL && !next_->Elision())
 336             out << ' ';
 337     }
 338     if (next_ != NULL)
 339         next_->Output(out);
 340 }
 341
 342 void CYEmpty::Output(CYOutput &out, CYFlags flags) const {
 343     out.Terminate();
 344 }
 345
 346 void CYEval::Output(CYOutput &out, CYFlags flags) const {
 347     _assert(false);
 348 }
 349
 350 void CYExpress::Output(CYOutput &out, CYFlags flags) const {
 351     expression_->Output(out, flags | CYNoBFC);
 352     out << ';';
 353 }
 354
 355 void CYExpression::Output(CYOutput &out) const {
 356     Output(out, CYNoFlags);
 357 }
 358
 359 void CYExpression::Output(CYOutput &out, int precedence, CYFlags flags) const {
 360     if (precedence < Precedence() || (flags & CYNoRightHand) != 0 && RightHand())
 361         out << '(' << *this << ')';
 362     else
 363         Output(out, flags);
 364 }
 365
 366 void CYExternal::Output(CYOutput &out, CYFlags flags) const {
 367     out << "extern" << abi_ << typed_ << ';';
 368 }
 369
 370 void CYFatArrow::Output(CYOutput &out, CYFlags flags) const {
 371     out << '(' << parameters_ << ')' << ' ' << "=>" << ' ' << '{' << code_ << '}';
 372 }
 373
 374 void CYFinally::Output(CYOutput &out) const {
 375     out << ' ' << "finally" << ' ';
 376     out << '{' << '\n';
 377     ++out.indent_;
 378     out << code_;
 379     --out.indent_;
 380     out << '\t' << '}';
 381 }
 382
 383 void CYFor::Output(CYOutput &out, CYFlags flags) const {
 384     out << "for" << ' ' << '(';
 385     if (initializer_ != NULL)
 386         initializer_->Output(out, CYNoIn);
 387     out.Terminate();
 388     if (test_ != NULL)
 389         out << ' ';
 390     out << test_;
 391     out.Terminate();
 392     if (increment_ != NULL)
 393         out << ' ';
 394     out << increment_;
 395     out << ')';
 396     code_->Single(out, CYRight(flags), CYCompactShort);
 397 }
 398
 399 void CYForLexical::Output(CYOutput &out, CYFlags flags) const {
 400     out << (constant_ ? "const" : "let") << ' ';
 401     binding_->Output(out, CYRight(flags));
 402 }
 403
 404 void CYForIn::Output(CYOutput &out, CYFlags flags) const {
 405     out << "for" << ' ' << '(';
 406     initializer_->Output(out, CYNoIn | CYNoRightHand);
 407     out << ' ' << "in" << ' ' << *iterable_ << ')';
 408     code_->Single(out, CYRight(flags), CYCompactShort);
 409 }
 410
 411 void CYForInitialized::Output(CYOutput &out, CYFlags flags) const {
 412     out << "for" << ' ' << '(' << "var" << ' ';
 413     binding_->Output(out, CYNoIn | CYNoRightHand);
 414     out << ' ' << "in" << ' ' << *iterable_ << ')';
 415     code_->Single(out, CYRight(flags), CYCompactShort);
 416 }
 417
 418 void CYForInComprehension::Output(CYOutput &out) const {
 419     out << "for" << ' ' << '(';
 420     binding_->Output(out, CYNoIn | CYNoRightHand);
 421     out << ' ' << "in" << ' ' << *iterable_ << ')';
 422 }
 423
 424 void CYForOf::Output(CYOutput &out, CYFlags flags) const {
 425     out << "for" << ' ' << '(';
 426     initializer_->Output(out, CYNoRightHand);
 427     out << ' ' << "of" << ' ' << *iterable_ << ')';
 428     code_->Single(out, CYRight(flags), CYCompactShort);
 429 }
 430
 431 void CYForOfComprehension::Output(CYOutput &out) const {
 432     out << "for" << ' ' << '(';
 433     binding_->Output(out, CYNoRightHand);
 434     out << ' ' << "of" << ' ' << *iterable_ << ')' << next_;
 435 }
 436
 437 void CYForVariable::Output(CYOutput &out, CYFlags flags) const {
 438     out << "var" << ' ';
 439     binding_->Output(out, CYRight(flags));
 440 }
 441
 442 void CYFunction::Output(CYOutput &out) const {
 443     out << '(' << parameters_ << ')' << ' ';
 444     out << '{' << '\n';
 445     ++out.indent_;
 446     out << code_;
 447     --out.indent_;
 448     out << '\t' << '}';
 449 }
 450
 451 void CYFunctionExpression::Output(CYOutput &out, CYFlags flags) const {
 452     // XXX: one could imagine using + here to save a byte
 453     bool protect((flags & CYNoFunction) != 0);
 454     if (protect)
 455         out << '(';
 456     out << "function";
 457     if (name_ != NULL)
 458         out << ' ' << *name_;
 459     CYFunction::Output(out);
 460     if (protect)
 461         out << ')';
 462 }
 463
 464 void CYFunctionStatement::Output(CYOutput &out, CYFlags flags) const {
 465     out << "function" << ' ' << *name_;
 466     CYFunction::Output(out);
 467 }
 468
 469 void CYFunctionParameter::Output(CYOutput &out) const {
 470     binding_->Output(out, CYNoFlags);
 471     if (next_ != NULL)
 472         out << ',' << ' ' << *next_;
 473 }
 474
 475 const char *CYIdentifier::Word() const {
 476     return next_ == NULL || next_ == this ? CYWord::Word() : next_->Word();
 477 }
 478
 479 void CYIf::Output(CYOutput &out, CYFlags flags) const {
 480     bool protect(false);
 481     if (false_ == NULL && (flags & CYNoDangle) != 0) {
 482         protect = true;
 483         out << '{';
 484     }
 485
 486     out << "if" << ' ' << '(' << *test_ << ')';
 487
 488     CYFlags right(protect ? CYNoFlags : CYRight(flags));
 489
 490     CYFlags jacks(CYNoDangle);
 491     if (false_ == NULL)
 492         jacks |= right;
 493     else
 494         jacks |= protect ? CYNoFlags : CYCenter(flags);
 495
 496     unsigned line(out.position_.line);
 497     unsigned indent(out.indent_);
 498     true_->Single(out, jacks, CYCompactShort);
 499
 500     if (false_ != NULL) {
 501         if (out.position_.line != line && out.recent_ == indent)
 502             out << ' ';
 503         else
 504             out << '\n' << '\t';
 505
 506         out << "else";
 507         false_->Single(out, right, CYCompactLong);
 508     }
 509
 510     if (protect)
 511         out << '}';
 512 }
 513
 514 void CYIfComprehension::Output(CYOutput &out) const {
 515     out << "if" << ' ' << '(' << *test_ << ')' << next_;
 516 }
 517
 518 void CYImport::Output(CYOutput &out, CYFlags flags) const {
 519     out << "@import";
 520 }
 521
 522 void CYIndirect::Output(CYOutput &out, CYFlags flags) const {
 523     out << "*";
 524     rhs_->Output(out, Precedence(), CYRight(flags));
 525 }
 526
 527 void CYIndirectMember::Output(CYOutput &out, CYFlags flags) const {
 528     object_->Output(out, Precedence(), CYLeft(flags));
 529     if (const char *word = property_->Word())
 530         out << "->" << word;
 531     else
 532         out << "->" << '[' << *property_ << ']';
 533 }
 534
 535 void CYInfix::Output(CYOutput &out, CYFlags flags) const {
 536     const char *name(Operator());
 537     bool protect((flags & CYNoIn) != 0 && strcmp(name, "in") == 0);
 538     if (protect)
 539         out << '(';
 540     CYFlags left(protect ? CYNoFlags : CYLeft(flags));
 541     lhs_->Output(out, Precedence(), left);
 542     out << ' ' << name << ' ';
 543     CYFlags right(protect ? CYNoFlags : CYRight(flags));
 544     rhs_->Output(out, Precedence() - 1, right);
 545     if (protect)
 546         out << ')';
 547 }
 548
 549 void CYLabel::Output(CYOutput &out, CYFlags flags) const {
 550     out << *name_ << ':';
 551     statement_->Single(out, CYRight(flags), CYCompactShort);
 552 }
 553
 554 void CYParenthetical::Output(CYOutput &out, CYFlags flags) const {
 555     out << '(';
 556     expression_->Output(out, CYCompound::Precedence_, CYNoFlags);
 557     out << ')';
 558 }
 559
 560 void CYStatement::Output(CYOutput &out) const {
 561     Multiple(out);
 562 }
 563
 564 void CYTemplate::Output(CYOutput &out, CYFlags flags) const {
 565     _assert(false);
 566 }
 567
 568 void CYTypeArrayOf::Output(CYOutput &out, CYIdentifier *identifier) const {
 569     next_->Output(out, Precedence(), identifier);
 570     out << '[';
 571     out << size_;
 572     out << ']';
 573 }
 574
 575 void CYTypeBlockWith::Output(CYOutput &out, CYIdentifier *identifier) const {
 576     out << '(' << '^';
 577     next_->Output(out, Precedence(), identifier);
 578     out << ')' << '(' << parameters_ << ')';
 579 }
 580
 581 void CYTypeConstant::Output(CYOutput &out, CYIdentifier *identifier) const {
 582     out << "const" << ' ';
 583     next_->Output(out, Precedence(), identifier);
 584 }
 585
 586 void CYTypeFunctionWith::Output(CYOutput &out, CYIdentifier *identifier) const {
 587     next_->Output(out, Precedence(), identifier);
 588     out << '(' << parameters_ << ')';
 589 }
 590
 591 void CYTypePointerTo::Output(CYOutput &out, CYIdentifier *identifier) const {
 592     out << '*';
 593     next_->Output(out, Precedence(), identifier);
 594 }
 595
 596 void CYTypeVolatile::Output(CYOutput &out, CYIdentifier *identifier) const {
 597     out << "volatile";
 598     next_->Output(out, Precedence(), identifier);
 599 }
 600
 601 void CYTypeModifier::Output(CYOutput &out, int precedence, CYIdentifier *identifier) const {
 602     if (this == NULL) {
 603         out << identifier;
 604         return;
 605     }
 606
 607     bool protect(precedence > Precedence());
 608
 609     if (protect)
 610         out << '(';
 611     Output(out, identifier);
 612     if (protect)
 613         out << ')';
 614 }
 615
 616 void CYTypedIdentifier::Output(CYOutput &out) const {
 617     specifier_->Output(out);
 618     modifier_->Output(out, 0, identifier_);
 619 }
 620
 621 void CYEncodedType::Output(CYOutput &out, CYFlags flags) const {
 622     out << "@encode(" << typed_ << ")";
 623 }
 624
 625 void CYTypedParameter::Output(CYOutput &out) const {
 626     out << typed_;
 627     if (next_ != NULL)
 628         out << ',' << ' ' << next_;
 629 }
 630
 631 void CYLambda::Output(CYOutput &out, CYFlags flags) const {
 632     // XXX: this is seriously wrong
 633     out << "[](";
 634     out << ")->";
 635     out << "{";
 636     out << "}";
 637 }
 638
 639 void CYTypeDefinition::Output(CYOutput &out, CYFlags flags) const {
 640     out << "typedef" << ' ' << *typed_;
 641 }
 642
 643 void CYTypeExpression::Output(CYOutput &out, CYFlags flags) const {
 644     out << '(' << "typedef" << ' ' << *typed_ << ')';
 645 }
 646
 647 void CYLexical::Output(CYOutput &out, CYFlags flags) const {
 648     out << "let" << ' ';
 649     bindings_->Output(out, flags); // XXX: flags
 650     out << ';';
 651 }
 652
 653 void CYModule::Output(CYOutput &out) const {
 654     out << part_;
 655     if (next_ != NULL)
 656         out << '.' << next_;
 657 }
 658
 659 namespace cy {
 660 namespace Syntax {
 661
 662 void New::Output(CYOutput &out, CYFlags flags) const {
 663     out << "new" << ' ';
 664     CYFlags jacks(CYNoCall | CYCenter(flags));
 665     constructor_->Output(out, Precedence(), jacks);
 666     if (arguments_ != NULL)
 667         out << '(' << *arguments_ << ')';
 668 }
 669
 670 } }
 671
 672 void CYNull::Output(CYOutput &out, CYFlags flags) const {
 673     out << "null";
 674 }
 675
 676 void CYNumber::Output(CYOutput &out, CYFlags flags) const {
 677     std::ostringstream str;
 678     CYNumerify(str, Value());
 679     std::string value(str.str());
 680     out << value.c_str();
 681     // XXX: this should probably also handle hex conversions and exponents
 682     if ((flags & CYNoInteger) != 0 && value.find('.') == std::string::npos)
 683         out << '.';
 684 }
 685
 686 void CYNumber::PropertyName(CYOutput &out) const {
 687     Output(out, CYNoFlags);
 688 }
 689
 690 void CYObject::Output(CYOutput &out, CYFlags flags) const {
 691     bool protect((flags & CYNoBrace) != 0);
 692     if (protect)
 693         out << '(';
 694     out << '{' << '\n';
 695     ++out.indent_;
 696     out << properties_;
 697     --out.indent_;
 698     out << '\t' << '}';
 699     if (protect)
 700         out << ')';
 701 }
 702
 703 void CYPostfix::Output(CYOutput &out, CYFlags flags) const {
 704     lhs_->Output(out, Precedence(), CYLeft(flags));
 705     out << Operator();
 706 }
 707
 708 void CYPrefix::Output(CYOutput &out, CYFlags flags) const {
 709     const char *name(Operator());
 710     out << name;
 711     if (Alphabetic())
 712         out << ' ';
 713     rhs_->Output(out, Precedence(), CYRight(flags));
 714 }
 715
 716 void CYScript::Output(CYOutput &out) const {
 717     out << code_;
 718 }
 719
 720 void CYProperty::Output(CYOutput &out) const {
 721     if (next_ != NULL || out.pretty_)
 722         out << ',';
 723     out << '\n' <<  next_;
 724 }
 725
 726 void CYPropertyGetter::Output(CYOutput &out) const {
 727     out << "get" << ' ';
 728     name_->PropertyName(out);
 729     CYFunction::Output(out);
 730     CYProperty::Output(out);
 731 }
 732
 733 void CYPropertyMethod::Output(CYOutput &out) const {
 734     name_->PropertyName(out);
 735     CYFunction::Output(out);
 736     CYProperty::Output(out);
 737 }
 738
 739 void CYPropertySetter::Output(CYOutput &out) const {
 740     out << "set" << ' ';
 741     name_->PropertyName(out);
 742     CYFunction::Output(out);
 743     CYProperty::Output(out);
 744 }
 745
 746 void CYPropertyValue::Output(CYOutput &out) const {
 747     out << '\t';
 748     name_->PropertyName(out);
 749     out << ':' << ' ';
 750     value_->Output(out, CYAssign::Precedence_, CYNoFlags);
 751     CYProperty::Output(out);
 752 }
 753
 754 void CYRegEx::Output(CYOutput &out, CYFlags flags) const {
 755     out << Value();
 756 }
 757
 758 void CYReturn::Output(CYOutput &out, CYFlags flags) const {
 759     out << "return";
 760     if (value_ != NULL)
 761         out << ' ' << *value_;
 762     out << ';';
 763 }
 764
 765 void CYRubyBlock::Output(CYOutput &out, CYFlags flags) const {
 766     call_->Output(out, CYLeft(flags));
 767     out << ' ';
 768     proc_->Output(out, CYRight(flags));
 769 }
 770
 771 void CYRubyProc::Output(CYOutput &out, CYFlags flags) const {
 772     out << '{' << ' ' << '|' << parameters_ << '|' << '\n';
 773     ++out.indent_;
 774     out << code_;
 775     --out.indent_;
 776     out << '\t' << '}';
 777 }
 778
 779 void CYStatement::Multiple(CYOutput &out, CYFlags flags) const {
 780     bool first(true);
 781     CYForEach (next, this) {
 782         bool last(next->next_ == NULL);
 783         CYFlags jacks(first ? last ? flags : CYLeft(flags) : last ? CYRight(flags) : CYCenter(flags));
 784         first = false;
 785         out << '\t';
 786         next->Output(out, jacks);
 787         out << '\n';
 788     }
 789 }
 790
 791 void CYStatement::Single(CYOutput &out, CYFlags flags, CYCompactType request) const {
 792     if (this == NULL)
 793         return out.Terminate();
 794
 795     _assert(next_ == NULL);
 796
 797     CYCompactType compact(Compact());
 798
 799     if (compact >= request)
 800         out << ' ';
 801     else {
 802         out << '\n';
 803         ++out.indent_;
 804         out << '\t';
 805     }
 806
 807     Output(out, flags);
 808
 809     if (compact < request)
 810         --out.indent_;
 811 }
 812
 813 void CYString::Output(CYOutput &out, CYFlags flags) const {
 814     std::ostringstream str;
 815     CYStringify(str, value_, size_);
 816     out << str.str().c_str();
 817 }
 818
 819 void CYString::PropertyName(CYOutput &out) const {
 820     if (const char *word = Word())
 821         out << word;
 822     else
 823         out << *this;
 824 }
 825
 826 static const char *Reserved_[] = {
 827     "false", "null", "true",
 828
 829     "break", "case", "catch", "continue", "default",
 830     "delete", "do", "else", "finally", "for", "function",
 831     "if", "in", "instanceof", "new", "return", "switch",
 832     "this", "throw", "try", "typeof", "var", "void",
 833     "while", "with",
 834
 835     "debugger", "const",
 836
 837     "class", "enum", "export", "extends", "import", "super",
 838
 839     "abstract", "boolean", "byte", "char", "double", "final",
 840     "float", "goto", "int", "long", "native", "short",
 841     "synchronized", "throws", "transient", "volatile",
 842
 843     "let", "yield",
 844
 845     NULL
 846 };
 847
 848 const char *CYString::Word() const {
 849     if (size_ == 0 || !WordStartRange_[value_[0]])
 850         return NULL;
 851     for (size_t i(1); i != size_; ++i)
 852         if (!WordEndRange_[value_[i]])
 853             return NULL;
 854     const char *value(Value());
 855     for (const char **reserved(Reserved_); *reserved != NULL; ++reserved)
 856         if (strcmp(*reserved, value) == 0)
 857             return NULL;
 858     return value;
 859 }
 860
 861 void CYSuperAccess::Output(CYOutput &out, CYFlags flags) const {
 862     out << "super";
 863     if (const char *word = property_->Word())
 864         out << '.' << word;
 865     else
 866         out << '[' << *property_ << ']';
 867 }
 868
 869 void CYSuperCall::Output(CYOutput &out, CYFlags flags) const {
 870     out << "super" << '(' << arguments_ << ')';
 871 }
 872
 873 void CYSwitch::Output(CYOutput &out, CYFlags flags) const {
 874     out << "switch" << ' ' << '(' << *value_ << ')' << ' ' << '{' << '\n';
 875     ++out.indent_;
 876     out << clauses_;
 877     --out.indent_;
 878     out << '\t' << '}';
 879 }
 880
 881 void CYThis::Output(CYOutput &out, CYFlags flags) const {
 882     out << "this";
 883 }
 884
 885 namespace cy {
 886 namespace Syntax {
 887
 888 void Throw::Output(CYOutput &out, CYFlags flags) const {
 889     out << "throw";
 890     if (value_ != NULL)
 891         out << ' ' << *value_;
 892     out << ';';
 893 }
 894
 895 void Try::Output(CYOutput &out, CYFlags flags) const {
 896     out << "try" << ' ';
 897     out << '{' << '\n';
 898     ++out.indent_;
 899     out << code_;
 900     --out.indent_;
 901     out << '\t' << '}';
 902     out << catch_ << finally_;
 903 }
 904
 905 } }
 906
 907 void CYTypeError::Output(CYOutput &out) const {
 908     out << "@error";
 909 }
 910
 911 void CYTypeLong::Output(CYOutput &out) const {
 912     out << "long" << specifier_;
 913 }
 914
 915 void CYTypeShort::Output(CYOutput &out) const {
 916     out << "short" << specifier_;
 917 }
 918
 919 void CYTypeSigned::Output(CYOutput &out) const {
 920     out << "signed" << specifier_;
 921 }
 922
 923 void CYTypeUnsigned::Output(CYOutput &out) const {
 924     out << "unsigned" << specifier_;
 925 }
 926
 927 void CYTypeVariable::Output(CYOutput &out) const {
 928     out << *name_;
 929 }
 930
 931 void CYTypeVoid::Output(CYOutput &out) const {
 932     out << "void";
 933 }
 934
 935 void CYVar::Output(CYOutput &out, CYFlags flags) const {
 936     out << "var" << ' ';
 937     bindings_->Output(out, flags); // XXX: flags
 938     out << ';';
 939 }
 940
 941 void CYVariable::Output(CYOutput &out, CYFlags flags) const {
 942     out << *name_;
 943 }
 944
 945 void CYWhile::Output(CYOutput &out, CYFlags flags) const {
 946     out << "while" << ' ' << '(' << *test_ << ')';
 947     code_->Single(out, CYRight(flags), CYCompactShort);
 948 }
 949
 950 void CYWith::Output(CYOutput &out, CYFlags flags) const {
 951     out << "with" << ' ' << '(' << *scope_ << ')';
 952     code_->Single(out, CYRight(flags), CYCompactShort);
 953 }
 954
 955 void CYWord::Output(CYOutput &out) const {
 956     out << Word();
 957     if (out.options_.verbose_) {
 958         out('@');
 959         char number[32];
 960         sprintf(number, "%p", this);
 961         out(number);
 962     }
 963 }
 964
 965 void CYWord::PropertyName(CYOutput &out) const {
 966     Output(out);
 967 }
 968
 969 const char *CYWord::Word() const {
 970     return word_;
 971 }