Output.cpp

   1 #include "Parser.hpp"
   2
   3 #include <iostream>
   4 #include <iomanip>
   5
   6 #include <objc/runtime.h>
   7 #include <sstream>
   8
   9 _finline CYFlags operator ~(CYFlags rhs) {
  10     return static_cast<CYFlags>(~static_cast<unsigned>(rhs));
  11 }
  12
  13 _finline CYFlags operator &(CYFlags lhs, CYFlags rhs) {
  14     return static_cast<CYFlags>(static_cast<unsigned>(lhs) & static_cast<unsigned>(rhs));
  15 }
  16
  17 _finline CYFlags operator |(CYFlags lhs, CYFlags rhs) {
  18     return static_cast<CYFlags>(static_cast<unsigned>(lhs) | static_cast<unsigned>(rhs));
  19 }
  20
  21 _finline CYFlags &operator |=(CYFlags &lhs, CYFlags rhs) {
  22     return lhs = lhs | rhs;
  23 }
  24
  25 _finline CYFlags CYLeft(CYFlags flags) {
  26     return flags & ~CYNoTrailer;
  27 }
  28
  29 _finline CYFlags CYCenter(CYFlags flags) {
  30     return flags & CYNoIn;
  31 }
  32
  33 _finline CYFlags CYRight(CYFlags flags) {
  34     return flags & (CYNoIn | CYNoTrailer);
  35 }
  36
  37 bool CYFalse::Value() const {
  38     return false;
  39 }
  40
  41 bool CYTrue::Value() const {
  42     return true;
  43 }
  44
  45 #define CYPA 16
  46
  47 void CYAddressOf::Output(std::ostream &out, CYFlags flags) const {
  48     rhs_->Output(out, 1, CYLeft(flags));
  49     out << ".$cya()";
  50 }
  51
  52 void CYArgument::Output(std::ostream &out) const {
  53     if (name_ != NULL) {
  54         out << *name_;
  55         if (value_ != NULL)
  56             out << ":";
  57     }
  58     if (value_ != NULL)
  59         value_->Output(out, CYPA, CYNoFlags);
  60     if (next_ != NULL) {
  61         if (next_->name_ == NULL)
  62             out << ',';
  63         else
  64             out << ' ';
  65         next_->Output(out);
  66     }
  67 }
  68
  69 void CYArray::Output(std::ostream &out, CYFlags flags) const {
  70     out << '[';
  71     if (elements_ != NULL)
  72         elements_->Output(out);
  73     out << ']';
  74 }
  75
  76 void CYArrayComprehension::Output(std::ostream &out, CYFlags flags) const {
  77     // XXX: I don't necc. need the ()s
  78     out << "(function($cyv";
  79     for (CYComprehension *comprehension(comprehensions_); comprehension != NULL; comprehension = comprehension->next_)
  80         if (const char *name = comprehension->Name())
  81             out << ',' << name;
  82     out << "){";
  83     out << "$cyv=[];";
  84     comprehensions_->Output(out);
  85     out << "$cyv.push(";
  86     expression_->Output(out, CYPA, CYNoFlags);
  87     out << ");";
  88     for (CYComprehension *comprehension(comprehensions_); comprehension != NULL; comprehension = comprehension->next_)
  89         comprehension->End_(out);
  90     out << "return $cyv;";
  91     out << "}())";
  92 }
  93
  94 void CYAssignment::Output(std::ostream &out, CYFlags flags) const {
  95     lhs_->Output(out, Precedence() - 1, CYLeft(flags));
  96     out << Operator();
  97     rhs_->Output(out, Precedence(), CYRight(flags));
  98 }
  99
 100 void CYBlock::Output(std::ostream &out) const {
 101     for (CYSource *statement(statements_); statement != NULL; statement = statement->next_)
 102         statement->Output(out);
 103 }
 104
 105 void CYBoolean::Output(std::ostream &out, CYFlags flags) const {
 106     if ((flags & CYNoLeader) != 0)
 107         out << ' ';
 108     out << (Value() ? "true" : "false");
 109     if ((flags & CYNoTrailer) != 0)
 110         out << ' ';
 111 }
 112
 113 void CYBreak::Output(std::ostream &out) const {
 114     out << "break";
 115     if (label_ != NULL)
 116         out << ' ' << *label_;
 117     out << ';';
 118 }
 119
 120 void CYCall::Output(std::ostream &out, CYFlags flags) const {
 121     function_->Output(out, Precedence(), CYLeft(flags));
 122     out << '(';
 123     if (arguments_ != NULL)
 124         arguments_->Output(out);
 125     out << ')';
 126 }
 127
 128 void CYCatch::Output(std::ostream &out) const {
 129     out << "catch(" << *name_ << ')';
 130     code_->Output(out, true);
 131 }
 132
 133 void CYCategory::Output(std::ostream &out) const {
 134     out << "(function($cys,$cyp,$cyc,$cyn,$cyt){";
 135     out << "$cyp=object_getClass($cys);";
 136     out << "$cyc=$cys;";
 137     if (messages_ != NULL)
 138         messages_->Output(out, true);
 139     out << "})(";
 140     name_->ClassName(out, true);
 141     out << ");";
 142 }
 143
 144 void CYClass::Output(std::ostream &out) const {
 145     Output(out, CYNoBF);
 146     out << ";";
 147 }
 148
 149 void CYClass::Output(std::ostream &out, CYFlags flags) const {
 150     // XXX: I don't necc. need the ()s
 151     out << "(function($cys,$cyp,$cyc,$cyn,$cyt,$cym){";
 152     out << "$cyp=object_getClass($cys);";
 153     out << "$cyc=objc_allocateClassPair($cys,";
 154     if (name_ != NULL)
 155         name_->ClassName(out, false);
 156     else
 157         out << "$cyq(\"CY$\")";
 158     out << ",0);";
 159     out << "$cym=object_getClass($cyc);";
 160     if (fields_ != NULL)
 161         fields_->Output(out);
 162     if (messages_ != NULL)
 163         messages_->Output(out, false);
 164     out << "objc_registerClassPair($cyc);";
 165     out << "return $cyc;";
 166     out << "}(";
 167     if (super_ != NULL)
 168         super_->Output(out, CYPA, CYNoFlags);
 169     else
 170         out << "null";
 171     out << "))";
 172 }
 173
 174 void CYCompound::Output(std::ostream &out, CYFlags flags) const {
 175     if (CYExpression *expression = expressions_)
 176         if (CYExpression *next = expression->next_) {
 177             expression->Output(out, CYLeft(flags));
 178             CYFlags center(CYCenter(flags));
 179             while (next != NULL) {
 180                 expression = next;
 181                 out << ',';
 182                 next = expression->next_;
 183                 CYFlags right(next != NULL ? center : CYRight(flags));
 184                 expression->Output(out, right);
 185             }
 186         } else
 187             expression->Output(out, flags);
 188 }
 189
 190 void CYComprehension::Output(std::ostream &out) const {
 191     Begin_(out);
 192     if (next_ != NULL)
 193         next_->Output(out);
 194 }
 195
 196 void CYCondition::Output(std::ostream &out, CYFlags flags) const {
 197     test_->Output(out, Precedence() - 1, CYLeft(flags));
 198     out << '?';
 199     if (true_ != NULL)
 200         true_->Output(out, CYPA, CYNoFlags);
 201     out << ':';
 202     false_->Output(out, CYPA, CYRight(flags));
 203 }
 204
 205 void CYContinue::Output(std::ostream &out) const {
 206     out << "continue";
 207     if (label_ != NULL)
 208         out << ' ' << *label_;
 209     out << ';';
 210 }
 211
 212 void CYClause::Output(std::ostream &out) const {
 213     if (case_ != NULL) {
 214         out << "case";
 215         case_->Output(out, CYNoLeader);
 216     } else
 217         out << "default";
 218     out << ':';
 219     if (code_ != NULL)
 220         code_->Output(out, false);
 221     if (next_ != NULL)
 222         out << *next_;
 223 }
 224
 225 const char *CYDeclaration::ForEachIn() const {
 226     return identifier_->Value();
 227 }
 228
 229 void CYDeclaration::ForIn(std::ostream &out, CYFlags flags) const {
 230     if ((flags & CYNoLeader) != 0)
 231         out << ' ';
 232     out << "var ";
 233     Output(out, CYRight(flags));
 234 }
 235
 236 void CYDeclaration::ForEachIn(std::ostream &out) const {
 237     out << *identifier_;
 238 }
 239
 240 void CYDeclaration::Output(std::ostream &out, CYFlags flags) const {
 241     out << *identifier_;
 242     if (initialiser_ != NULL) {
 243         out << '=';
 244         initialiser_->Output(out, CYPA, CYRight(flags));
 245     } else if ((flags & CYNoTrailer) != 0)
 246         out << ' ';
 247 }
 248
 249 void CYDeclarations::For(std::ostream &out) const {
 250     out << "var ";
 251     Output(out, CYNoIn);
 252 }
 253
 254 void CYDeclarations::Output(std::ostream &out, CYFlags flags) const {
 255     const CYDeclarations *declaration(this);
 256   output:
 257     CYDeclarations *next(declaration->next_);
 258     CYFlags right(next == NULL ? CYRight(flags) : CYCenter(flags));
 259     declaration->declaration_->Output(out, right);
 260
 261     if (next != NULL) {
 262         out << ',';
 263         declaration = next;
 264         goto output;
 265     }
 266 }
 267
 268 void CYDirectMember::Output(std::ostream &out, CYFlags flags) const {
 269     object_->Output(out, Precedence(), CYLeft(flags));
 270     if (const char *word = property_->Word())
 271         out << '.' << word;
 272     else {
 273         out << '[';
 274         property_->Output(out, CYNoFlags);
 275         out << ']';
 276     }
 277 }
 278
 279 void CYDoWhile::Output(std::ostream &out) const {
 280     // XXX: extra space character!
 281     out << "do ";
 282     code_->Output(out, false);
 283     out << "while(";
 284     test_->Output(out, CYNoFlags);
 285     out << ')';
 286 }
 287
 288 void CYElement::Output(std::ostream &out) const {
 289     if (value_ != NULL)
 290         value_->Output(out, CYPA, CYNoFlags);
 291     if (next_ != NULL || value_ == NULL)
 292         out << ',';
 293     if (next_ != NULL)
 294         next_->Output(out);
 295 }
 296
 297 void CYEmpty::Output(std::ostream &out) const {
 298     out << ';';
 299 }
 300
 301 void CYEmpty::Output(std::ostream &out, bool block) const {
 302     if (next_ != NULL)
 303         CYSource::Output(out, block);
 304     else
 305         out << "{}";
 306 }
 307
 308 void CYExpress::Output(std::ostream &out) const {
 309     expression_->Output(out, CYNoBF);
 310     out << ';';
 311 }
 312
 313 void CYExpression::ClassName(std::ostream &out, bool object) const {
 314     Output(out, CYPA, CYNoFlags);
 315 }
 316
 317 const char *CYExpression::ForEachIn() const {
 318     return NULL;
 319 }
 320
 321 void CYExpression::For(std::ostream &out) const {
 322     Output(out, CYNoIn);
 323 }
 324
 325 void CYExpression::ForEachIn(std::ostream &out) const {
 326     // XXX: this should handle LeftHandSideExpression
 327     Output(out, CYPA, CYNoFlags);
 328 }
 329
 330 void CYExpression::ForIn(std::ostream &out, CYFlags flags) const {
 331     // XXX: this should handle LeftHandSideExpression
 332     Output(out, flags);
 333 }
 334
 335 void CYExpression::Output(std::ostream &out, unsigned precedence, CYFlags flags) const {
 336     if (precedence < Precedence()) {
 337         out << '(';
 338         Output(out, CYNoFlags);
 339         out << ')';
 340     } else
 341         Output(out, flags);
 342 }
 343
 344 void CYField::Output(std::ostream &out) const {
 345     // XXX: implement!
 346 }
 347
 348 void CYFor::Output(std::ostream &out) const {
 349     out << "for(";
 350     if (initialiser_ != NULL)
 351         initialiser_->For(out);
 352     out << ';';
 353     if (test_ != NULL)
 354         test_->Output(out, CYNoFlags);
 355     out << ';';
 356     if (increment_ != NULL)
 357         increment_->Output(out, CYNoFlags);
 358     out << ')';
 359     code_->Output(out, false);
 360 }
 361
 362 void CYForEachIn::Output(std::ostream &out) const {
 363     out << "with({$cys:0,$cyt:0}){";
 364
 365     out << "$cys=";
 366     set_->Output(out, CYPA, CYNoFlags);
 367     out << ";";
 368
 369     out << "for($cyt in $cys){";
 370
 371     initialiser_->ForEachIn(out);
 372     out << "=$cys[$cyt];";
 373
 374     code_->Show(out);
 375
 376     out << '}';
 377
 378     out << '}';
 379 }
 380
 381 void CYForEachInComprehension::Begin_(std::ostream &out) const {
 382     out << "(function($cys){";
 383     out << "$cys=";
 384     set_->Output(out, CYPA, CYNoFlags);
 385     out << ";";
 386
 387     out << "for(" << *name_ << " in $cys){";
 388     out << *name_ << "=$cys[" << *name_ << "];";
 389 }
 390
 391 void CYForEachInComprehension::End_(std::ostream &out) const {
 392     out << "}}());";
 393 }
 394
 395 void CYForIn::Output(std::ostream &out) const {
 396     out << "for(";
 397     initialiser_->ForIn(out, CYNoIn | CYNoTrailer);
 398     out << "in";
 399     set_->Output(out, CYNoLeader);
 400     out << ')';
 401     code_->Output(out, false);
 402 }
 403
 404 void CYForInComprehension::Begin_(std::ostream &out) const {
 405     out << "for(" << *name_ << " in";
 406     set_->Output(out, CYNoLeader);
 407     out << ')';
 408 }
 409
 410 void CYFunction::Output(std::ostream &out) const {
 411     CYLambda::Output(out, CYNoFlags);
 412 }
 413
 414 void CYFunctionParameter::Output(std::ostream &out) const {
 415     out << *name_;
 416     if (next_ != NULL) {
 417         out << ',';
 418         out << *next_;
 419     }
 420 }
 421
 422 void CYIf::Output(std::ostream &out) const {
 423     out << "if(";
 424     test_->Output(out, CYNoFlags);
 425     out << ')';
 426     true_->Output(out, true);
 427     if (false_ != NULL) {
 428         out << "else ";
 429         false_->Output(out, false);
 430     }
 431 }
 432
 433 void CYIfComprehension::Begin_(std::ostream &out) const {
 434     out << "if(";
 435     test_->Output(out, CYNoFlags);
 436     out << ')';
 437 }
 438
 439 void CYIndirect::Output(std::ostream &out, CYFlags flags) const {
 440     rhs_->Output(out, 1, CYLeft(flags));
 441     out << ".$cyi";
 442 }
 443
 444 void CYIndirectMember::Output(std::ostream &out, CYFlags flags) const {
 445     object_->Output(out, Precedence(), CYLeft(flags));
 446     out << ".$cyi";
 447     if (const char *word = property_->Word())
 448         out << '.' << word;
 449     else {
 450         out << '[';
 451         property_->Output(out, CYNoFlags);
 452         out << ']';
 453     }
 454 }
 455
 456 void CYInfix::Output(std::ostream &out, CYFlags flags) const {
 457     const char *name(Operator());
 458     bool protect((flags & CYNoIn) != 0 && strcmp(name, "in"));
 459     if (protect)
 460         out << '(';
 461     bool alphabetic(Alphabetic());
 462     CYFlags left(protect ? CYNoFlags : CYLeft(flags));
 463     if (alphabetic)
 464         left |= CYNoTrailer;
 465     lhs_->Output(out, Precedence(), left);
 466     out << name;
 467     CYFlags right(protect ? CYNoFlags : CYRight(flags));
 468     if (alphabetic)
 469         right |= CYNoLeader;
 470     if (strcmp(name, "-") == 0)
 471         right |= CYNoHyphen;
 472     rhs_->Output(out, Precedence() - 1, right);
 473     if (protect)
 474         out << ')';
 475 }
 476
 477 void CYLambda::Output(std::ostream &out, CYFlags flags) const {
 478     bool protect((flags & CYNoFunction) != 0);
 479     if (protect)
 480         out << '(';
 481     else if ((flags & CYNoLeader) != 0)
 482         out << ' ';
 483     out << "function";
 484     if (name_ != NULL)
 485         out << ' ' << *name_;
 486     out << '(';
 487     if (parameters_ != NULL)
 488         out << *parameters_;
 489     out << "){";
 490     if (body_ != NULL)
 491         body_->Show(out);
 492     out << '}';
 493     if (protect)
 494         out << ')';
 495 }
 496
 497 void CYLet::Output(std::ostream &out) const {
 498     out << "let(";
 499     declarations_->Output(out, CYNoFlags);
 500     out << "){";
 501     if (statements_ != NULL)
 502         statements_->Show(out);
 503     out << "}";
 504 }
 505
 506 void CYMessage::Output(std::ostream &out, bool replace) const {
 507     if (next_ != NULL)
 508         next_->Output(out, replace);
 509     out << "$cyn=new Selector(\"";
 510     for (CYMessageParameter *parameter(parameter_); parameter != NULL; parameter = parameter->next_)
 511         if (parameter->tag_ != NULL) {
 512             out << *parameter->tag_;
 513             if (parameter->name_ != NULL)
 514                 out << ':';
 515         }
 516     out << "\");";
 517     out << "$cyt=$cyn.type($cy" << (instance_ ? 's' : 'p') << ");";
 518     out << "class_" << (replace ? "replace" : "add") << "Method($cy" << (instance_ ? 'c' : 'm') << ",$cyn,";
 519     out << "new Functor(function(self,_cmd";
 520     for (CYMessageParameter *parameter(parameter_); parameter != NULL; parameter = parameter->next_)
 521         if (parameter->name_ != NULL)
 522             out << ',' << *parameter->name_;
 523     out << "){return function(){";
 524     if (body_ != NULL)
 525         body_->Show(out);
 526     out << "}.call(self);},$cyt),$cyt);";
 527 }
 528
 529 void CYNew::Output(std::ostream &out, CYFlags flags) const {
 530     if ((flags & CYNoLeader) != 0)
 531         out << ' ';
 532     out << "new";
 533     constructor_->Output(out, Precedence(), CYCenter(flags) | CYNoLeader);
 534     out << '(';
 535     if (arguments_ != NULL)
 536         arguments_->Output(out);
 537     out << ')';
 538 }
 539
 540 void CYNull::Output(std::ostream &out, CYFlags flags) const {
 541     if ((flags & CYNoLeader) != 0)
 542         out << ' ';
 543     CYWord::Output(out);
 544     if ((flags & CYNoTrailer) != 0)
 545         out << ' ';
 546 }
 547
 548 void CYNumber::Output(std::ostream &out, CYFlags flags) const {
 549     double value(Value());
 550     if ((flags & CYNoLeader) != 0 || value < 0 && (flags & CYNoHyphen) != 0)
 551         out << ' ';
 552     // XXX: decide on correct precision
 553     out << std::setprecision(9) << value;
 554     if ((flags & CYNoTrailer) != 0)
 555         out << ' ';
 556 }
 557
 558 void CYNumber::PropertyName(std::ostream &out) const {
 559     Output(out);
 560 }
 561
 562 void CYObject::Output(std::ostream &out, CYFlags flags) const {
 563     bool protect((flags & CYNoBrace) != 0);
 564     if (protect)
 565         out << '(';
 566     out << '{';
 567     if (property_ != NULL)
 568         property_->Output(out);
 569     out << '}';
 570     if (protect)
 571         out << ')';
 572 }
 573
 574 void CYPostfix::Output(std::ostream &out, CYFlags flags) const {
 575     lhs_->Output(out, Precedence(), CYLeft(flags));
 576     out << Operator();
 577 }
 578
 579 void CYPrefix::Output(std::ostream &out, CYFlags flags) const {
 580     const char *name(Operator());
 581     bool alphabetic(Alphabetic());
 582     if (alphabetic && (flags & CYNoLeader) != 0 || name[0] == '-' && (flags & CYNoHyphen) != 0)
 583         out << ' ';
 584     out << name;
 585     CYFlags right(CYRight(flags));
 586     if (alphabetic)
 587         right |= CYNoLeader;
 588     rhs_->Output(out, Precedence(), right);
 589 }
 590
 591 void CYProperty::Output(std::ostream &out) const {
 592     name_->PropertyName(out);
 593     out << ':';
 594     value_->Output(out, CYPA, CYNoFlags);
 595     if (next_ != NULL) {
 596         out << ',';
 597         next_->Output(out);
 598     }
 599 }
 600
 601 void CYReturn::Output(std::ostream &out) const {
 602     out << "return";
 603     if (value_ != NULL)
 604         value_->Output(out, CYNoLeader);
 605     out << ';';
 606 }
 607
 608 void CYSelector::Output(std::ostream &out, CYFlags flags) const {
 609     if ((flags & CYNoLeader) != 0)
 610         out << ' ';
 611     out << "new Selector(\"";
 612     if (name_ != NULL)
 613         name_->Output(out);
 614     out << "\")";
 615 }
 616
 617 void CYSelectorPart::Output(std::ostream &out) const {
 618     if (name_ != NULL)
 619         out << *name_;
 620     if (value_)
 621         out << ':';
 622     if (next_ != NULL)
 623         next_->Output(out);
 624 }
 625
 626 void CYSend::Output(std::ostream &out, CYFlags flags) const {
 627     if ((flags & CYNoLeader) != 0)
 628         out << ' ';
 629     out << "objc_msgSend(";
 630     self_->Output(out, CYPA, CYNoFlags);
 631     out << ",";
 632     std::ostringstream name;
 633     for (CYArgument *argument(arguments_); argument != NULL; argument = argument->next_)
 634         if (argument->name_ != NULL) {
 635             name << *argument->name_;
 636             if (argument->value_ != NULL)
 637                 name << ':';
 638         }
 639     out << reinterpret_cast<void *>(sel_registerName(name.str().c_str()));
 640     for (CYArgument *argument(arguments_); argument != NULL; argument = argument->next_)
 641         if (argument->value_ != NULL) {
 642             out << ",";
 643             argument->value_->Output(out, CYPA, CYNoFlags);
 644         }
 645     out << ')';
 646 }
 647
 648 void CYSource::Show(std::ostream &out) const {
 649     for (const CYSource *next(this); next != NULL; next = next->next_)
 650         next->Output_(out);
 651 }
 652
 653 void CYSource::Output(std::ostream &out, bool block) const {
 654     if (!block && !IsBlock())
 655         Output(out);
 656     else {
 657         out << '{';
 658         Show(out);
 659         out << '}';
 660     }
 661 }
 662
 663 void CYSource::Output_(std::ostream &out) const {
 664     Output(out);
 665 }
 666
 667 void CYStatement::Output_(std::ostream &out) const {
 668     for (CYLabel *label(labels_); label != NULL; label = label->next_)
 669         out << *label->name_ << ':';
 670     Output(out);
 671 }
 672
 673 void CYString::Output(std::ostream &out, CYFlags flags) const {
 674     unsigned quot(0), apos(0);
 675     for (const char *value(value_), *end(value_ + size_); value != end; ++value)
 676         if (*value == '"')
 677             ++quot;
 678         else if (*value == '\'')
 679             ++apos;
 680
 681     bool single(quot > apos);
 682
 683     out << (single ? '\'' : '"');
 684     for (const char *value(value_), *end(value_ + size_); value != end; ++value)
 685         switch (*value) {
 686             case '\\': out << "\\\\"; break;
 687             case '\b': out << "\\b"; break;
 688             case '\f': out << "\\f"; break;
 689             case '\n': out << "\\n"; break;
 690             case '\r': out << "\\r"; break;
 691             case '\t': out << "\\t"; break;
 692             case '\v': out << "\\v"; break;
 693
 694             case '"':
 695                 if (!single)
 696                     out << "\\\"";
 697                 else goto simple;
 698             break;
 699
 700             case '\'':
 701                 if (single)
 702                     out << "\\'";
 703                 else goto simple;
 704             break;
 705
 706             default:
 707                 if (*value < 0x20 || *value >= 0x7f)
 708                     out << "\\x" << std::setbase(16) << std::setw(2) << std::setfill('0') << unsigned(*value);
 709                 else simple:
 710                     out << *value;
 711         }
 712     out << (single ? '\'' : '"');
 713 }
 714
 715 void CYString::PropertyName(std::ostream &out) const {
 716     if (const char *word = Word())
 717         out << word;
 718     else
 719         Output(out);
 720 }
 721
 722 void CYSwitch::Output(std::ostream &out) const {
 723     out << "switch(";
 724     value_->Output(out, CYNoFlags);
 725     out << "){";
 726     if (clauses_ != NULL)
 727         out << *clauses_;
 728     out << '}';
 729 }
 730
 731 void CYThis::Output(std::ostream &out, CYFlags flags) const {
 732     if ((flags & CYNoLeader) != 0)
 733         out << ' ';
 734     CYWord::Output(out);
 735     if ((flags & CYNoTrailer) != 0)
 736         out << ' ';
 737 }
 738
 739 void CYThrow::Output(std::ostream &out) const {
 740     out << "throw";
 741     if (value_ != NULL)
 742         value_->Output(out, CYNoLeader);
 743     out << ';';
 744 }
 745
 746 void CYTry::Output(std::ostream &out) const {
 747     out << "try";
 748     try_->Output(out, true);
 749     if (catch_ != NULL)
 750         catch_->Output(out);
 751     if (finally_ != NULL) {
 752         out << "finally";
 753         finally_->Output(out, true);
 754     }
 755 }
 756
 757 void CYVar::Output(std::ostream &out) const {
 758     out << "var ";
 759     declarations_->Output(out, CYNoFlags);
 760     out << ';';
 761 }
 762
 763 void CYVariable::Output(std::ostream &out, CYFlags flags) const {
 764     if ((flags & CYNoLeader) != 0)
 765         out << ' ';
 766     out << *name_;
 767     if ((flags & CYNoTrailer) != 0)
 768         out << ' ';
 769 }
 770
 771 void CYWhile::Output(std::ostream &out) const {
 772     out << "while(";
 773     test_->Output(out, CYNoFlags);
 774     out << ')';
 775     code_->Output(out, false);
 776 }
 777
 778 void CYWith::Output(std::ostream &out) const {
 779     out << "with(";
 780     scope_->Output(out, CYNoFlags);
 781     out << ')';
 782     code_->Output(out, false);
 783 }
 784
 785 void CYWord::ClassName(std::ostream &out, bool object) const {
 786     if (object)
 787         out << "objc_getClass(";
 788     out << '"' << Value() << '"';
 789     if (object)
 790         out << ')';
 791 }
 792
 793 void CYWord::Output(std::ostream &out) const {
 794     out << Value();
 795 }
 796
 797 void CYWord::PropertyName(std::ostream &out) const {
 798     Output(out);
 799 }