Parser.hpp

   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 #ifndef CYCRIPT_PARSER_HPP
  23 #define CYCRIPT_PARSER_HPP
  24
  25 #include <iostream>
  26
  27 #include <string>
  28 #include <vector>
  29 #include <map>
  30 #include <set>
  31
  32 #include <cstdio>
  33 #include <cstdlib>
  34
  35 #include "List.hpp"
  36 #include "Pooling.hpp"
  37 #include "Options.hpp"
  38
  39 struct CYContext;
  40
  41 struct CYThing {
  42     virtual ~CYThing() {
  43     }
  44
  45     virtual void Output(struct CYOutput &out) const = 0;
  46 };
  47
  48 struct CYOutput {
  49     std::ostream &out_;
  50     CYOptions &options_;
  51     bool pretty_;
  52     unsigned indent_;
  53     bool right_;
  54
  55     enum {
  56         NoMode,
  57         NoLetter,
  58         NoPlus,
  59         NoHyphen,
  60         Terminated
  61     } mode_;
  62
  63     CYOutput(std::ostream &out, CYOptions &options) :
  64         out_(out),
  65         options_(options),
  66         pretty_(false),
  67         indent_(0),
  68         right_(false),
  69         mode_(NoMode)
  70     {
  71     }
  72
  73     void Check(char value);
  74     void Terminate();
  75
  76     CYOutput &operator <<(char rhs);
  77     CYOutput &operator <<(const char *rhs);
  78
  79     _finline CYOutput &operator <<(const CYThing *rhs) {
  80         if (rhs != NULL)
  81             rhs->Output(*this);
  82         return *this;
  83     }
  84
  85     _finline CYOutput &operator <<(const CYThing &rhs) {
  86         rhs.Output(*this);
  87         return *this;
  88     }
  89 };
  90
  91 struct CYPropertyName {
  92     virtual void PropertyName(CYOutput &out) const = 0;
  93
  94     virtual ~CYPropertyName() {
  95     }
  96 };
  97
  98 struct CYExpression;
  99 struct CYAssignment;
 100
 101 enum CYNeeded {
 102     CYNever     = -1,
 103     CYSometimes =  0,
 104     CYAlways    =  1,
 105 };
 106
 107 enum CYFlags {
 108     CYNoFlags =      0,
 109     CYNoBrace =      (1 << 0),
 110     CYNoFunction =   (1 << 1),
 111     CYNoIn =         (1 << 2),
 112     CYNoCall =       (1 << 3),
 113     CYNoRightHand =  (1 << 4),
 114     CYNoDangle =     (1 << 5),
 115     CYNoInteger =    (1 << 6),
 116     CYNoBF =         (CYNoBrace | CYNoFunction),
 117 };
 118
 119 _finline CYFlags operator ~(CYFlags rhs) {
 120     return static_cast<CYFlags>(~static_cast<unsigned>(rhs));
 121 }
 122
 123 _finline CYFlags operator &(CYFlags lhs, CYFlags rhs) {
 124     return static_cast<CYFlags>(static_cast<unsigned>(lhs) & static_cast<unsigned>(rhs));
 125 }
 126
 127 _finline CYFlags operator |(CYFlags lhs, CYFlags rhs) {
 128     return static_cast<CYFlags>(static_cast<unsigned>(lhs) | static_cast<unsigned>(rhs));
 129 }
 130
 131 _finline CYFlags &operator |=(CYFlags &lhs, CYFlags rhs) {
 132     return lhs = lhs | rhs;
 133 }
 134
 135 _finline CYFlags CYLeft(CYFlags flags) {
 136     return flags & ~(CYNoDangle | CYNoInteger);
 137 }
 138
 139 _finline CYFlags CYRight(CYFlags flags) {
 140     return flags & ~CYNoBF;
 141 }
 142
 143 _finline CYFlags CYCenter(CYFlags flags) {
 144     return CYLeft(CYRight(flags));
 145 }
 146
 147 struct CYStatement :
 148     CYNext<CYStatement>
 149 {
 150     virtual ~CYStatement() {
 151     }
 152
 153     void Single(CYOutput &out, CYFlags flags) const;
 154     void Multiple(CYOutput &out, CYFlags flags = CYNoFlags) const;
 155
 156     virtual CYStatement *Replace(CYContext &context) = 0;
 157
 158   private:
 159     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 160 };
 161
 162 struct CYStatements {
 163     CYStatement *first_;
 164     CYStatement *last_;
 165
 166     CYStatements() :
 167         first_(NULL),
 168         last_(NULL)
 169     {
 170     }
 171
 172     operator CYStatement *() const {
 173         return first_;
 174     }
 175
 176     CYStatements &operator ->*(CYStatement *next) {
 177         if (next != NULL)
 178             if (first_ == NULL) {
 179                 first_ = next;
 180                 last_ = next;
 181             } else for (;; last_ = last_->next_)
 182                 if (last_->next_ == NULL) {
 183                     last_->next_ = next;
 184                     last_ = next;
 185                     break;
 186                 }
 187         return *this;
 188     }
 189 };
 190
 191 struct CYClassName {
 192     virtual ~CYClassName() {
 193     }
 194
 195     virtual CYExpression *ClassName(CYContext &context, bool object) = 0;
 196     virtual void ClassName(CYOutput &out, bool object) const = 0;
 197 };
 198
 199 struct CYWord :
 200     CYThing,
 201     CYPropertyName,
 202     CYClassName
 203 {
 204     const char *word_;
 205
 206     CYWord(const char *word) :
 207         word_(word)
 208     {
 209     }
 210
 211     void Set(const char *value) {
 212         word_ = value;
 213     }
 214
 215     virtual const char *Word() const;
 216     virtual void Output(CYOutput &out) const;
 217
 218     virtual CYExpression *ClassName(CYContext &context, bool object);
 219     virtual void ClassName(CYOutput &out, bool object) const;
 220     virtual void PropertyName(CYOutput &out) const;
 221 };
 222
 223 _finline std::ostream &operator <<(std::ostream &lhs, const CYWord &rhs) {
 224     lhs << &rhs << '=';
 225     return lhs << rhs.Word();
 226 }
 227
 228 struct CYIdentifier :
 229     CYNext<CYIdentifier>,
 230     CYWord
 231 {
 232     CYIdentifier *replace_;
 233     size_t offset_;
 234     size_t usage_;
 235
 236     CYIdentifier(const char *word) :
 237         CYWord(word),
 238         replace_(NULL),
 239         offset_(0),
 240         usage_(0)
 241     {
 242     }
 243
 244     virtual const char *Word() const;
 245     CYIdentifier *Replace(CYContext &context);
 246 };
 247
 248 struct CYComment :
 249     CYStatement
 250 {
 251     const char *value_;
 252
 253     CYComment(const char *value) :
 254         value_(value)
 255     {
 256     }
 257
 258     virtual CYStatement *Replace(CYContext &context);
 259     virtual void Output(CYOutput &out, CYFlags flags) const;
 260 };
 261
 262 struct CYLabel :
 263     CYStatement
 264 {
 265     CYIdentifier *name_;
 266     CYStatement *statement_;
 267
 268     CYLabel(CYIdentifier *name, CYStatement *statement) :
 269         name_(name),
 270         statement_(statement)
 271     {
 272     }
 273
 274     virtual CYStatement *Replace(CYContext &context);
 275     virtual void Output(CYOutput &out, CYFlags flags) const;
 276 };
 277
 278 struct CYCStringLess :
 279     std::binary_function<const char *, const char *, bool>
 280 {
 281     _finline bool operator ()(const char *lhs, const char *rhs) const {
 282         return strcmp(lhs, rhs) < 0;
 283     }
 284 };
 285
 286 struct CYIdentifierValueLess :
 287     std::binary_function<CYIdentifier *, CYIdentifier *, bool>
 288 {
 289     _finline bool operator ()(CYIdentifier *lhs, CYIdentifier *rhs) const {
 290         return CYCStringLess()(lhs->Word(), rhs->Word());
 291     }
 292 };
 293
 294 enum CYIdentifierFlags {
 295     CYIdentifierArgument,
 296     CYIdentifierVariable,
 297     CYIdentifierOther,
 298     CYIdentifierMagic,
 299     CYIdentifierCatch,
 300 };
 301
 302 typedef std::set<const char *, CYCStringLess> CYCStringSet;
 303 typedef std::set<CYIdentifier *, CYIdentifierValueLess> CYIdentifierValueSet;
 304 typedef std::map<CYIdentifier *, CYIdentifierFlags> CYIdentifierAddressFlagsMap;
 305
 306 struct CYIdentifierUsage {
 307     CYIdentifier *identifier_;
 308     size_t usage_;
 309 };
 310
 311 typedef std::vector<CYIdentifierUsage> CYIdentifierUsageVector;
 312
 313 struct CYScope {
 314     bool transparent_;
 315
 316     CYContext &context_;
 317     CYStatement *&statements_;
 318
 319     CYScope *parent_;
 320
 321     CYIdentifierAddressFlagsMap internal_;
 322     CYIdentifierValueSet identifiers_;
 323
 324     CYScope(bool transparent, CYContext &context, CYStatement *&statements);
 325     virtual ~CYScope();
 326
 327     void Close();
 328
 329     void Declare(CYContext &context, CYIdentifier *identifier, CYIdentifierFlags flags);
 330     virtual CYIdentifier *Lookup(CYContext &context, CYIdentifier *identifier);
 331     void Merge(CYContext &context, CYIdentifier *identifier);
 332     void Scope(CYContext &context, CYStatement *&statements);
 333 };
 334
 335 struct CYProgram :
 336     CYThing
 337 {
 338     CYStatement *statements_;
 339
 340     CYProgram(CYStatement *statements) :
 341         statements_(statements)
 342     {
 343     }
 344
 345     virtual void Replace(CYContext &context);
 346     virtual void Output(CYOutput &out) const;
 347 };
 348
 349 struct CYNonLocal;
 350 struct CYThisScope;
 351
 352 struct CYContext {
 353     CYOptions &options_;
 354
 355     CYScope *scope_;
 356     CYThisScope *this_;
 357
 358     CYIdentifierUsageVector rename_;
 359
 360     CYNonLocal *nonlocal_;
 361     CYNonLocal *nextlocal_;
 362     unsigned unique_;
 363
 364     CYContext(CYOptions &options) :
 365         options_(options),
 366         scope_(NULL),
 367         this_(NULL),
 368         nonlocal_(NULL),
 369         nextlocal_(NULL),
 370         unique_(0)
 371     {
 372     }
 373
 374     virtual ~CYContext() {
 375     }
 376
 377     template <typename Type_>
 378     void ReplaceAll(Type_ *&values) {
 379         Type_ **last(&values);
 380         CYForEach (next, values) {
 381             Replace(*last = next);
 382             if (*last != NULL)
 383                 last = &(*last)->next_;
 384         }
 385     }
 386
 387     template <typename Type_>
 388     void Replace(Type_ *&value) {
 389         for (;;) if (value == NULL)
 390             break;
 391         else {
 392             Type_ *replace(value->Replace(*this));
 393             if (replace != value)
 394                 value = replace;
 395             else break;
 396         }
 397     }
 398
 399     void NonLocal(CYStatement *&statements);
 400     CYIdentifier *Unique();
 401 };
 402
 403 struct CYNonLocal {
 404     CYIdentifier *identifier_;
 405
 406     CYNonLocal() :
 407         identifier_(NULL)
 408     {
 409     }
 410
 411     CYIdentifier *Target(CYContext &context) {
 412         if (identifier_ == NULL)
 413             identifier_ = context.Unique();
 414         return identifier_;
 415     }
 416 };
 417
 418 struct CYThisScope :
 419     CYNext<CYThisScope>
 420 {
 421     CYIdentifier *identifier_;
 422
 423     CYThisScope() :
 424         identifier_(NULL)
 425     {
 426     }
 427
 428     CYIdentifier *Identifier(CYContext &context) {
 429         if (next_ != NULL)
 430             return next_->Identifier(context);
 431         if (identifier_ == NULL)
 432             identifier_ = context.Unique();
 433         return identifier_;
 434     }
 435 };
 436
 437 struct CYBlock :
 438     CYStatement,
 439     CYThing
 440 {
 441     CYStatement *statements_;
 442
 443     CYBlock(CYStatement *statements) :
 444         statements_(statements)
 445     {
 446     }
 447
 448     operator CYStatement *() const {
 449         return statements_;
 450     }
 451
 452     void AddPrev(CYStatement *statement) {
 453         CYSetLast(statement) = statements_;
 454         statements_ = statement;
 455     }
 456
 457     virtual CYStatement *Replace(CYContext &context);
 458
 459     virtual void Output(CYOutput &out) const;
 460     virtual void Output(CYOutput &out, CYFlags flags) const;
 461 };
 462
 463 class CYStream :
 464     public std::istream
 465 {
 466   private:
 467     class CYBuffer :
 468         public std::streambuf
 469     {
 470       public:
 471         CYBuffer(const char *start, const char *end) {
 472             setg(const_cast<char *>(start), const_cast<char *>(start), const_cast<char *>(end));
 473         }
 474     } buffer_;
 475
 476   public:
 477     CYStream(const char *start, const char *end) :
 478         std::istream(&buffer_),
 479         buffer_(start, end)
 480     {
 481     }
 482 };
 483
 484 struct CYForInitialiser {
 485     virtual ~CYForInitialiser() {
 486     }
 487
 488     virtual CYExpression *Replace(CYContext &context) = 0;
 489     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 490 };
 491
 492 struct CYForInInitialiser {
 493     virtual ~CYForInInitialiser() {
 494     }
 495
 496     virtual void ForIn(CYOutput &out, CYFlags flags) const = 0;
 497     virtual CYStatement *ForEachIn(CYContext &out, CYExpression *value) = 0;
 498
 499     virtual CYExpression *Replace(CYContext &context) = 0;
 500     virtual CYAssignment *Assignment(CYContext &context) = 0;
 501
 502     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 503 };
 504
 505 struct CYNumber;
 506 struct CYString;
 507
 508 struct CYExpression :
 509     CYNext<CYExpression>,
 510     CYForInitialiser,
 511     CYForInInitialiser,
 512     CYClassName,
 513     CYThing
 514 {
 515     virtual unsigned Precedence() const = 0;
 516
 517     virtual bool RightHand() const {
 518         return true;
 519     }
 520
 521     virtual void ForIn(CYOutput &out, CYFlags flags) const;
 522     virtual CYStatement *ForEachIn(CYContext &out, CYExpression *value);
 523
 524     virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
 525
 526     virtual void Output(CYOutput &out) const;
 527     virtual void Output(CYOutput &out, CYFlags flags) const = 0;
 528     void Output(CYOutput &out, unsigned precedence, CYFlags flags) const;
 529
 530     virtual CYExpression *ClassName(CYContext &context, bool object);
 531     virtual void ClassName(CYOutput &out, bool object) const;
 532
 533     virtual CYExpression *Replace(CYContext &context) = 0;
 534     virtual CYAssignment *Assignment(CYContext &context);
 535
 536     virtual CYExpression *Primitive(CYContext &context) {
 537         return this;
 538     }
 539
 540     virtual CYNumber *Number(CYContext &context) {
 541         return NULL;
 542     }
 543
 544     virtual CYString *String(CYContext &context) {
 545         return NULL;
 546     }
 547
 548     virtual const char *Word() const {
 549         return NULL;
 550     }
 551 };
 552
 553 #define CYAlphabetic(value) \
 554     virtual bool Alphabetic() const { \
 555         return value; \
 556     }
 557
 558 #define CYPrecedence(value) \
 559     static const unsigned Precedence_ = value; \
 560     virtual unsigned Precedence() const { \
 561         return Precedence_; \
 562     }
 563
 564 #define CYRightHand(value) \
 565     virtual bool RightHand() const { \
 566         return value; \
 567     }
 568
 569 struct CYCompound :
 570     CYExpression
 571 {
 572     CYExpression *expressions_;
 573
 574     CYCompound(CYExpression *expressions = NULL) :
 575         expressions_(expressions)
 576     {
 577     }
 578
 579     void AddPrev(CYExpression *expression) {
 580         CYSetLast(expression) = expressions_;
 581         expressions_ = expression;
 582     }
 583
 584     CYPrecedence(17)
 585
 586     virtual CYExpression *Replace(CYContext &context);
 587     void Output(CYOutput &out, CYFlags flags) const;
 588
 589     virtual CYExpression *Primitive(CYContext &context);
 590 };
 591
 592 struct CYDeclaration;
 593
 594 struct CYFunctionParameter :
 595     CYNext<CYFunctionParameter>,
 596     CYThing
 597 {
 598     CYForInInitialiser *initialiser_;
 599
 600     CYFunctionParameter(CYForInInitialiser *initialiser, CYFunctionParameter *next = NULL) :
 601         CYNext<CYFunctionParameter>(next),
 602         initialiser_(initialiser)
 603     {
 604     }
 605
 606     void Replace(CYContext &context, CYBlock &code);
 607     void Output(CYOutput &out) const;
 608 };
 609
 610 struct CYComprehension :
 611     CYNext<CYComprehension>,
 612     CYThing
 613 {
 614     CYComprehension(CYComprehension *next = NULL) :
 615         CYNext<CYComprehension>(next)
 616     {
 617     }
 618
 619     virtual const char *Name() const = 0;
 620
 621     virtual CYFunctionParameter *Parameter(CYContext &context) const = 0;
 622     CYFunctionParameter *Parameters(CYContext &context) const;
 623     virtual CYStatement *Replace(CYContext &context, CYStatement *statement) const;
 624     virtual void Output(CYOutput &out) const = 0;
 625 };
 626
 627 struct CYForInComprehension :
 628     CYComprehension
 629 {
 630     CYIdentifier *name_;
 631     CYExpression *set_;
 632
 633     CYForInComprehension(CYIdentifier *name, CYExpression *set, CYComprehension *next = NULL) :
 634         CYComprehension(next),
 635         name_(name),
 636         set_(set)
 637     {
 638     }
 639
 640     virtual const char *Name() const {
 641         return name_->Word();
 642     }
 643
 644     virtual CYFunctionParameter *Parameter(CYContext &context) const;
 645     virtual CYStatement *Replace(CYContext &context, CYStatement *statement) const;
 646     virtual void Output(CYOutput &out) const;
 647 };
 648
 649 struct CYForOfComprehension :
 650     CYComprehension
 651 {
 652     CYIdentifier *name_;
 653     CYExpression *set_;
 654
 655     CYForOfComprehension(CYIdentifier *name, CYExpression *set, CYComprehension *next = NULL) :
 656         CYComprehension(next),
 657         name_(name),
 658         set_(set)
 659     {
 660     }
 661
 662     virtual const char *Name() const {
 663         return name_->Word();
 664     }
 665
 666     virtual CYFunctionParameter *Parameter(CYContext &context) const;
 667     virtual CYStatement *Replace(CYContext &context, CYStatement *statement) const;
 668     virtual void Output(CYOutput &out) const;
 669 };
 670
 671 struct CYIfComprehension :
 672     CYComprehension
 673 {
 674     CYExpression *test_;
 675
 676     CYIfComprehension(CYExpression *test) :
 677         test_(test)
 678     {
 679     }
 680
 681     virtual const char *Name() const {
 682         return NULL;
 683     }
 684
 685     virtual CYFunctionParameter *Parameter(CYContext &context) const;
 686     virtual CYStatement *Replace(CYContext &context, CYStatement *statement) const;
 687     virtual void Output(CYOutput &out) const;
 688 };
 689
 690 struct CYArrayComprehension :
 691     CYExpression
 692 {
 693     CYExpression *expression_;
 694     CYComprehension *comprehensions_;
 695
 696     CYArrayComprehension(CYExpression *expression, CYComprehension *comprehensions) :
 697         expression_(expression),
 698         comprehensions_(comprehensions)
 699     {
 700     }
 701
 702     CYPrecedence(0)
 703
 704     virtual CYExpression *Replace(CYContext &context);
 705     virtual void Output(CYOutput &out, CYFlags flags) const;
 706 };
 707
 708 struct CYLiteral :
 709     CYExpression
 710 {
 711     CYPrecedence(0)
 712     CYRightHand(false)
 713 };
 714
 715 struct CYTrivial :
 716     CYLiteral
 717 {
 718     virtual CYExpression *Replace(CYContext &context);
 719 };
 720
 721 struct CYMagic :
 722     CYExpression
 723 {
 724     CYPrecedence(0)
 725     CYRightHand(false)
 726 };
 727
 728 struct CYRange {
 729     uint64_t lo_;
 730     uint64_t hi_;
 731
 732     CYRange(uint64_t lo, uint64_t hi) :
 733         lo_(lo), hi_(hi)
 734     {
 735     }
 736
 737     bool operator [](uint8_t value) const {
 738         return !(value >> 7) && (value >> 6 ? hi_ : lo_) >> (value & 0x3f) & 0x1;
 739     }
 740
 741     void operator()(uint8_t value) {
 742         if (value >> 7)
 743             return;
 744         (value >> 6 ? hi_ : lo_) |= uint64_t(0x1) << (value & 0x3f);
 745     }
 746 };
 747
 748 extern CYRange DigitRange_;
 749 extern CYRange WordStartRange_;
 750 extern CYRange WordEndRange_;
 751
 752 struct CYString :
 753     CYTrivial,
 754     CYPropertyName
 755 {
 756     const char *value_;
 757     size_t size_;
 758
 759     CYString() :
 760         value_(NULL),
 761         size_(0)
 762     {
 763     }
 764
 765     CYString(const char *value) :
 766         value_(value),
 767         size_(strlen(value))
 768     {
 769     }
 770
 771     CYString(const char *value, size_t size) :
 772         value_(value),
 773         size_(size)
 774     {
 775     }
 776
 777     CYString(const CYWord *word) :
 778         value_(word->Word()),
 779         size_(strlen(value_))
 780     {
 781     }
 782
 783     const char *Value() const {
 784         return value_;
 785     }
 786
 787     virtual const char *Word() const;
 788
 789     virtual CYNumber *Number(CYContext &context);
 790     virtual CYString *String(CYContext &context);
 791
 792     CYString *Concat(CYContext &out, CYString *rhs) const;
 793     virtual void Output(CYOutput &out, CYFlags flags) const;
 794     virtual void PropertyName(CYOutput &out) const;
 795 };
 796
 797 struct CYNumber :
 798     CYTrivial,
 799     CYPropertyName
 800 {
 801     double value_;
 802
 803     CYNumber(double value) :
 804         value_(value)
 805     {
 806     }
 807
 808     double Value() const {
 809         return value_;
 810     }
 811
 812     virtual CYNumber *Number(CYContext &context);
 813     virtual CYString *String(CYContext &context);
 814
 815     virtual void Output(CYOutput &out, CYFlags flags) const;
 816     virtual void PropertyName(CYOutput &out) const;
 817 };
 818
 819 struct CYRegEx :
 820     CYTrivial
 821 {
 822     const char *value_;
 823
 824     CYRegEx(const char *value) :
 825         value_(value)
 826     {
 827     }
 828
 829     const char *Value() const {
 830         return value_;
 831     }
 832
 833     virtual void Output(CYOutput &out, CYFlags flags) const;
 834 };
 835
 836 struct CYNull :
 837     CYWord,
 838     CYTrivial
 839 {
 840     CYNull() :
 841         CYWord("null")
 842     {
 843     }
 844
 845     virtual CYNumber *Number(CYContext &context);
 846     virtual CYString *String(CYContext &context);
 847
 848     virtual void Output(CYOutput &out, CYFlags flags) const;
 849 };
 850
 851 struct CYThis :
 852     CYWord,
 853     CYMagic
 854 {
 855     CYThis() :
 856         CYWord("this")
 857     {
 858     }
 859
 860     virtual CYExpression *Replace(CYContext &context);
 861     virtual void Output(CYOutput &out, CYFlags flags) const;
 862 };
 863
 864 struct CYBoolean :
 865     CYTrivial
 866 {
 867     virtual bool Value() const = 0;
 868     virtual void Output(CYOutput &out, CYFlags flags) const;
 869 };
 870
 871 struct CYFalse :
 872     CYWord,
 873     CYBoolean
 874 {
 875     CYFalse() :
 876         CYWord("false")
 877     {
 878     }
 879
 880     virtual bool Value() const {
 881         return false;
 882     }
 883
 884     virtual CYNumber *Number(CYContext &context);
 885     virtual CYString *String(CYContext &context);
 886 };
 887
 888 struct CYTrue :
 889     CYWord,
 890     CYBoolean
 891 {
 892     CYTrue() :
 893         CYWord("true")
 894     {
 895     }
 896
 897     virtual bool Value() const {
 898         return true;
 899     }
 900
 901     virtual CYNumber *Number(CYContext &context);
 902     virtual CYString *String(CYContext &context);
 903 };
 904
 905 struct CYVariable :
 906     CYExpression
 907 {
 908     CYIdentifier *name_;
 909
 910     CYVariable(CYIdentifier *name) :
 911         name_(name)
 912     {
 913     }
 914
 915     CYVariable(const char *name) :
 916         name_(new($pool) CYIdentifier(name))
 917     {
 918     }
 919
 920     CYPrecedence(0)
 921     CYRightHand(false)
 922
 923     virtual CYExpression *Replace(CYContext &context);
 924     virtual void Output(CYOutput &out, CYFlags flags) const;
 925 };
 926
 927 struct CYPrefix :
 928     CYExpression
 929 {
 930     CYExpression *rhs_;
 931
 932     CYPrefix(CYExpression *rhs) :
 933         rhs_(rhs)
 934     {
 935     }
 936
 937     virtual bool Alphabetic() const = 0;
 938     virtual const char *Operator() const = 0;
 939
 940     CYPrecedence(4)
 941
 942     virtual CYExpression *Replace(CYContext &context);
 943     virtual void Output(CYOutput &out, CYFlags flags) const;
 944 };
 945
 946 struct CYInfix :
 947     CYExpression
 948 {
 949     CYExpression *lhs_;
 950     CYExpression *rhs_;
 951
 952     CYInfix(CYExpression *lhs, CYExpression *rhs) :
 953         lhs_(lhs),
 954         rhs_(rhs)
 955     {
 956     }
 957
 958     void SetLeft(CYExpression *lhs) {
 959         lhs_ = lhs;
 960     }
 961
 962     virtual bool Alphabetic() const = 0;
 963     virtual const char *Operator() const = 0;
 964
 965     virtual CYExpression *Replace(CYContext &context);
 966     virtual void Output(CYOutput &out, CYFlags flags) const;
 967 };
 968
 969 struct CYPostfix :
 970     CYExpression
 971 {
 972     CYExpression *lhs_;
 973
 974     CYPostfix(CYExpression *lhs) :
 975         lhs_(lhs)
 976     {
 977     }
 978
 979     virtual const char *Operator() const = 0;
 980
 981     CYPrecedence(3)
 982
 983     virtual CYExpression *Replace(CYContext &context);
 984     virtual void Output(CYOutput &out, CYFlags flags) const;
 985 };
 986
 987 struct CYAssignment :
 988     CYExpression
 989 {
 990     CYExpression *lhs_;
 991     CYExpression *rhs_;
 992
 993     CYAssignment(CYExpression *lhs, CYExpression *rhs) :
 994         lhs_(lhs),
 995         rhs_(rhs)
 996     {
 997     }
 998
 999     void SetLeft(CYExpression *lhs) {
1000         lhs_ = lhs;
1001     }
1002
1003     virtual const char *Operator() const = 0;
1004
1005     CYPrecedence(16)
1006
1007     virtual CYExpression *Replace(CYContext &context);
1008     virtual void Output(CYOutput &out, CYFlags flags) const;
1009 };
1010
1011 struct CYArgument :
1012     CYNext<CYArgument>,
1013     CYThing
1014 {
1015     CYWord *name_;
1016     CYExpression *value_;
1017
1018     CYArgument(CYExpression *value, CYArgument *next = NULL) :
1019         CYNext<CYArgument>(next),
1020         name_(NULL),
1021         value_(value)
1022     {
1023     }
1024
1025     CYArgument(CYWord *name, CYExpression *value, CYArgument *next = NULL) :
1026         CYNext<CYArgument>(next),
1027         name_(name),
1028         value_(value)
1029     {
1030     }
1031
1032     CYArgument *Replace(CYContext &context);
1033     void Output(CYOutput &out) const;
1034 };
1035
1036 struct CYBlank :
1037     public CYWord
1038 {
1039     CYBlank() :
1040         CYWord("")
1041     {
1042     }
1043 };
1044
1045 struct CYClause :
1046     CYThing,
1047     CYNext<CYClause>
1048 {
1049     CYExpression *case_;
1050     CYStatement *statements_;
1051
1052     CYClause(CYExpression *_case, CYStatement *statements) :
1053         case_(_case),
1054         statements_(statements)
1055     {
1056     }
1057
1058     void Replace(CYContext &context);
1059     virtual void Output(CYOutput &out) const;
1060 };
1061
1062 struct CYElement :
1063     CYNext<CYElement>,
1064     CYThing
1065 {
1066     CYExpression *value_;
1067
1068     CYElement(CYExpression *value, CYElement *next) :
1069         CYNext<CYElement>(next),
1070         value_(value)
1071     {
1072     }
1073
1074     void Replace(CYContext &context);
1075     void Output(CYOutput &out) const;
1076 };
1077
1078 struct CYArray :
1079     CYLiteral
1080 {
1081     CYElement *elements_;
1082
1083     CYArray(CYElement *elements = NULL) :
1084         elements_(elements)
1085     {
1086     }
1087
1088     virtual CYExpression *Replace(CYContext &context);
1089     virtual void Output(CYOutput &out, CYFlags flags) const;
1090 };
1091
1092 struct CYProperty :
1093     CYNext<CYProperty>,
1094     CYThing
1095 {
1096     CYPropertyName *name_;
1097     CYExpression *value_;
1098
1099     CYProperty(CYPropertyName *name, CYExpression *value, CYProperty *next = NULL) :
1100         CYNext<CYProperty>(next),
1101         name_(name),
1102         value_(value)
1103     {
1104     }
1105
1106     void Replace(CYContext &context);
1107     virtual void Output(CYOutput &out) const;
1108 };
1109
1110 struct CYDeclaration :
1111     CYForInInitialiser
1112 {
1113     CYIdentifier *identifier_;
1114     CYExpression *initialiser_;
1115
1116     CYDeclaration(CYIdentifier *identifier, CYExpression *initialiser = NULL) :
1117         identifier_(identifier),
1118         initialiser_(initialiser)
1119     {
1120     }
1121
1122     virtual void ForIn(CYOutput &out, CYFlags flags) const;
1123     virtual CYStatement *ForEachIn(CYContext &out, CYExpression *value);
1124
1125     virtual CYExpression *Replace(CYContext &context);
1126
1127     virtual CYAssignment *Assignment(CYContext &context);
1128     CYVariable *Variable(CYContext &context);
1129
1130     virtual void Output(CYOutput &out, CYFlags flags) const;
1131 };
1132
1133 struct CYDeclarations :
1134     CYNext<CYDeclarations>,
1135     CYThing
1136 {
1137     CYDeclaration *declaration_;
1138
1139     CYDeclarations(CYDeclaration *declaration, CYDeclarations *next = NULL) :
1140         CYNext<CYDeclarations>(next),
1141         declaration_(declaration)
1142     {
1143     }
1144
1145     void Replace(CYContext &context);
1146
1147     CYCompound *Compound(CYContext &context);
1148     CYProperty *Property(CYContext &context);
1149     CYArgument *Argument(CYContext &context);
1150     CYFunctionParameter *Parameter(CYContext &context);
1151
1152     virtual void Output(CYOutput &out) const;
1153     virtual void Output(CYOutput &out, CYFlags flags) const;
1154 };
1155
1156 struct CYForDeclarations :
1157     CYForInitialiser
1158 {
1159     CYDeclarations *declarations_;
1160
1161     CYForDeclarations(CYDeclarations *declarations) :
1162         declarations_(declarations)
1163     {
1164     }
1165
1166     virtual CYCompound *Replace(CYContext &context);
1167     virtual void Output(CYOutput &out, CYFlags flags) const;
1168 };
1169
1170 struct CYVar :
1171     CYStatement
1172 {
1173     CYDeclarations *declarations_;
1174
1175     CYVar(CYDeclarations *declarations) :
1176         declarations_(declarations)
1177     {
1178     }
1179
1180     virtual CYStatement *Replace(CYContext &context);
1181     virtual void Output(CYOutput &out, CYFlags flags) const;
1182 };
1183
1184 struct CYLetStatement :
1185     CYStatement
1186 {
1187     CYDeclarations *declarations_;
1188     CYStatement *code_;
1189
1190     CYLetStatement(CYDeclarations *declarations, CYStatement *code) :
1191         declarations_(declarations),
1192         code_(code)
1193     {
1194     }
1195
1196     virtual CYStatement *Replace(CYContext &context);
1197     virtual void Output(CYOutput &out, CYFlags flags) const;
1198 };
1199
1200 struct CYFor :
1201     CYStatement
1202 {
1203     CYForInitialiser *initialiser_;
1204     CYExpression *test_;
1205     CYExpression *increment_;
1206     CYStatement *code_;
1207
1208     CYFor(CYForInitialiser *initialiser, CYExpression *test, CYExpression *increment, CYStatement *code) :
1209         initialiser_(initialiser),
1210         test_(test),
1211         increment_(increment),
1212         code_(code)
1213     {
1214     }
1215
1216     virtual CYStatement *Replace(CYContext &context);
1217     virtual void Output(CYOutput &out, CYFlags flags) const;
1218 };
1219
1220 struct CYForIn :
1221     CYStatement
1222 {
1223     CYForInInitialiser *initialiser_;
1224     CYExpression *set_;
1225     CYStatement *code_;
1226
1227     CYForIn(CYForInInitialiser *initialiser, CYExpression *set, CYStatement *code) :
1228         initialiser_(initialiser),
1229         set_(set),
1230         code_(code)
1231     {
1232     }
1233
1234     virtual CYStatement *Replace(CYContext &context);
1235     virtual void Output(CYOutput &out, CYFlags flags) const;
1236 };
1237
1238 struct CYForOf :
1239     CYStatement
1240 {
1241     CYForInInitialiser *initialiser_;
1242     CYExpression *set_;
1243     CYStatement *code_;
1244
1245     CYForOf(CYForInInitialiser *initialiser, CYExpression *set, CYStatement *code) :
1246         initialiser_(initialiser),
1247         set_(set),
1248         code_(code)
1249     {
1250     }
1251
1252     virtual CYStatement *Replace(CYContext &context);
1253     virtual void Output(CYOutput &out, CYFlags flags) const;
1254 };
1255
1256 struct CYObject :
1257     CYLiteral
1258 {
1259     CYProperty *properties_;
1260
1261     CYObject(CYProperty *properties = NULL) :
1262         properties_(properties)
1263     {
1264     }
1265
1266     virtual CYExpression *Replace(CYContext &context);
1267     void Output(CYOutput &out, CYFlags flags) const;
1268 };
1269
1270 struct CYMember :
1271     CYExpression
1272 {
1273     CYExpression *object_;
1274     CYExpression *property_;
1275
1276     CYMember(CYExpression *object, CYExpression *property) :
1277         object_(object),
1278         property_(property)
1279     {
1280     }
1281
1282     void SetLeft(CYExpression *object) {
1283         object_ = object;
1284     }
1285 };
1286
1287 struct CYDirectMember :
1288     CYMember
1289 {
1290     CYDirectMember(CYExpression *object, CYExpression *property) :
1291         CYMember(object, property)
1292     {
1293     }
1294
1295     CYPrecedence(1)
1296     CYRightHand(false)
1297
1298     virtual CYExpression *Replace(CYContext &context);
1299     virtual void Output(CYOutput &out, CYFlags flags) const;
1300 };
1301
1302 struct CYIndirectMember :
1303     CYMember
1304 {
1305     CYIndirectMember(CYExpression *object, CYExpression *property) :
1306         CYMember(object, property)
1307     {
1308     }
1309
1310     CYPrecedence(1)
1311     CYRightHand(false)
1312
1313     virtual CYExpression *Replace(CYContext &context);
1314     virtual void Output(CYOutput &out, CYFlags flags) const;
1315 };
1316
1317 namespace cy {
1318 namespace Syntax {
1319
1320 struct New :
1321     CYExpression
1322 {
1323     CYExpression *constructor_;
1324     CYArgument *arguments_;
1325
1326     New(CYExpression *constructor, CYArgument *arguments) :
1327         constructor_(constructor),
1328         arguments_(arguments)
1329     {
1330     }
1331
1332     virtual unsigned Precedence() const {
1333         return arguments_ == NULL ? 2 : 1;
1334     }
1335
1336     CYRightHand(false)
1337
1338     virtual CYExpression *Replace(CYContext &context);
1339     virtual void Output(CYOutput &out, CYFlags flags) const;
1340
1341     virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
1342 };
1343
1344 } }
1345
1346 struct CYCall :
1347     CYExpression
1348 {
1349     CYExpression *function_;
1350     CYArgument *arguments_;
1351
1352     CYCall(CYExpression *function, CYArgument *arguments = NULL) :
1353         function_(function),
1354         arguments_(arguments)
1355     {
1356     }
1357
1358     CYPrecedence(1)
1359     CYRightHand(false)
1360
1361     virtual CYExpression *Replace(CYContext &context);
1362     virtual void Output(CYOutput &out, CYFlags flags) const;
1363
1364     virtual CYExpression *AddArgument(CYContext &context, CYExpression *value);
1365 };
1366
1367 struct CYRubyProc;
1368
1369 struct CYRubyBlock :
1370     CYExpression
1371 {
1372     CYExpression *call_;
1373     CYRubyProc *proc_;
1374
1375     CYRubyBlock(CYExpression *call, CYRubyProc *proc) :
1376         call_(call),
1377         proc_(proc)
1378     {
1379     }
1380
1381     CYPrecedence(1)
1382     CYRightHand(false)
1383
1384     virtual CYExpression *Replace(CYContext &context);
1385     virtual void Output(CYOutput &out, CYFlags flags) const;
1386 };
1387
1388 struct CYIf :
1389     CYStatement
1390 {
1391     CYExpression *test_;
1392     CYStatement *true_;
1393     CYStatement *false_;
1394
1395     CYIf(CYExpression *test, CYStatement *_true, CYStatement *_false = NULL) :
1396         test_(test),
1397         true_(_true),
1398         false_(_false)
1399     {
1400     }
1401
1402     virtual CYStatement *Replace(CYContext &context);
1403     virtual void Output(CYOutput &out, CYFlags flags) const;
1404 };
1405
1406 struct CYDoWhile :
1407     CYStatement
1408 {
1409     CYExpression *test_;
1410     CYStatement *code_;
1411
1412     CYDoWhile(CYExpression *test, CYStatement *code) :
1413         test_(test),
1414         code_(code)
1415     {
1416     }
1417
1418     virtual CYStatement *Replace(CYContext &context);
1419     virtual void Output(CYOutput &out, CYFlags flags) const;
1420 };
1421
1422 struct CYWhile :
1423     CYStatement
1424 {
1425     CYExpression *test_;
1426     CYStatement *code_;
1427
1428     CYWhile(CYExpression *test, CYStatement *code) :
1429         test_(test),
1430         code_(code)
1431     {
1432     }
1433
1434     virtual CYStatement *Replace(CYContext &context);
1435     virtual void Output(CYOutput &out, CYFlags flags) const;
1436 };
1437
1438 // XXX: this should be split up into CYAnonymousFunction and CYNamedFunction (subclass)
1439 struct CYFunction {
1440     CYIdentifier *name_;
1441     CYFunctionParameter *parameters_;
1442     CYBlock code_;
1443
1444     CYNonLocal *nonlocal_;
1445     CYThisScope this_;
1446
1447     CYFunction(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *statements) :
1448         name_(name),
1449         parameters_(parameters),
1450         code_(statements),
1451         nonlocal_(NULL)
1452     {
1453     }
1454
1455     virtual ~CYFunction() {
1456     }
1457
1458     void Inject(CYContext &context);
1459     virtual void Replace_(CYContext &context, bool outer);
1460     virtual void Output(CYOutput &out, CYFlags flags) const;
1461 };
1462
1463 // XXX: this should be split up into CYAnonymousFunctionExpression and CYNamedFunctionExpression
1464 struct CYFunctionExpression :
1465     CYFunction,
1466     CYExpression
1467 {
1468     CYFunctionExpression(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *statements) :
1469         CYFunction(name, parameters, statements)
1470     {
1471     }
1472
1473     CYPrecedence(0)
1474     CYRightHand(false)
1475
1476     virtual CYExpression *Replace(CYContext &context);
1477     virtual void Output(CYOutput &out, CYFlags flags) const;
1478 };
1479
1480 // XXX: this should derive from CYAnonymousFunction
1481 struct CYFatArrow :
1482     CYFunction,
1483     CYExpression
1484 {
1485     CYFatArrow(CYFunctionParameter *parameters, CYStatement *statements) :
1486         CYFunction(NULL, parameters, statements)
1487     {
1488     }
1489
1490     CYPrecedence(0)
1491     CYRightHand(false)
1492
1493     virtual CYExpression *Replace(CYContext &context);
1494     virtual void Output(CYOutput &out, CYFlags flags) const;
1495 };
1496
1497 // XXX: this should derive from CYAnonymousFunctionExpression
1498 struct CYRubyProc :
1499     CYFunctionExpression
1500 {
1501     CYRubyProc(CYFunctionParameter *parameters, CYStatement *statements) :
1502         CYFunctionExpression(NULL, parameters, statements)
1503     {
1504     }
1505
1506     virtual CYExpression *Replace(CYContext &context);
1507     virtual void Output(CYOutput &out, CYFlags flags) const;
1508 };
1509
1510 // XXX: this should derive from CYNamedFunction
1511 struct CYFunctionStatement :
1512     CYFunction,
1513     CYStatement
1514 {
1515     CYFunctionStatement(CYIdentifier *name, CYFunctionParameter *parameters, CYStatement *statements) :
1516         CYFunction(name, parameters, statements)
1517     {
1518     }
1519
1520     virtual CYStatement *Replace(CYContext &context);
1521     virtual void Output(CYOutput &out, CYFlags flags) const;
1522 };
1523
1524 struct CYExpress :
1525     CYStatement
1526 {
1527     CYExpression *expression_;
1528
1529     CYExpress(CYExpression *expression) :
1530         expression_(expression)
1531     {
1532         if (expression == NULL)
1533             throw;
1534     }
1535
1536     virtual CYStatement *Replace(CYContext &context);
1537     virtual void Output(CYOutput &out, CYFlags flags) const;
1538 };
1539
1540 struct CYContinue :
1541     CYStatement
1542 {
1543     CYIdentifier *label_;
1544
1545     CYContinue(CYIdentifier *label) :
1546         label_(label)
1547     {
1548     }
1549
1550     virtual CYStatement *Replace(CYContext &context);
1551     virtual void Output(CYOutput &out, CYFlags flags) const;
1552 };
1553
1554 struct CYBreak :
1555     CYStatement
1556 {
1557     CYIdentifier *label_;
1558
1559     CYBreak(CYIdentifier *label) :
1560         label_(label)
1561     {
1562     }
1563
1564     virtual CYStatement *Replace(CYContext &context);
1565     virtual void Output(CYOutput &out, CYFlags flags) const;
1566 };
1567
1568 struct CYReturn :
1569     CYStatement
1570 {
1571     CYExpression *value_;
1572
1573     CYReturn(CYExpression *value) :
1574         value_(value)
1575     {
1576     }
1577
1578     virtual CYStatement *Replace(CYContext &context);
1579     virtual void Output(CYOutput &out, CYFlags flags) const;
1580 };
1581
1582 struct CYEmpty :
1583     CYStatement
1584 {
1585     virtual CYStatement *Replace(CYContext &context);
1586     virtual void Output(CYOutput &out, CYFlags flags) const;
1587 };
1588
1589 struct CYFinally :
1590     CYThing
1591 {
1592     CYBlock code_;
1593
1594     CYFinally(CYStatement *statements) :
1595         code_(statements)
1596     {
1597     }
1598
1599     void Replace(CYContext &context);
1600     virtual void Output(CYOutput &out) const;
1601 };
1602
1603 struct CYTypeModifier :
1604     CYNext<CYTypeModifier>
1605 {
1606     CYTypeModifier(CYTypeModifier *next) :
1607         CYNext<CYTypeModifier>(next)
1608     {
1609     }
1610
1611     virtual CYExpression *Replace(CYContext &context) = 0;
1612 };
1613
1614 struct CYTypeArrayOf :
1615     CYTypeModifier
1616 {
1617     CYExpression *size_;
1618
1619     CYTypeArrayOf(CYExpression *size, CYTypeModifier *next = NULL) :
1620         CYTypeModifier(next),
1621         size_(size)
1622     {
1623     }
1624
1625     CYPrecedence(2)
1626
1627     virtual CYExpression *Replace(CYContext &context);
1628 };
1629
1630 struct CYTypeConstant :
1631     CYTypeModifier
1632 {
1633     CYTypeConstant(CYTypeModifier *next = NULL) :
1634         CYTypeModifier(next)
1635     {
1636     }
1637
1638     CYPrecedence(3)
1639
1640     virtual CYExpression *Replace(CYContext &context);
1641 };
1642
1643 struct CYTypePointerTo :
1644     CYTypeModifier
1645 {
1646     CYTypePointerTo(CYTypeModifier *next = NULL) :
1647         CYTypeModifier(next)
1648     {
1649     }
1650
1651     CYPrecedence(3)
1652
1653     virtual CYExpression *Replace(CYContext &context);
1654 };
1655
1656 struct CYTypeVariable :
1657     CYTypeModifier
1658 {
1659     CYExpression *expression_;
1660
1661     CYTypeVariable(CYExpression *expression) :
1662         CYTypeModifier(NULL),
1663         expression_(expression)
1664     {
1665     }
1666
1667     CYPrecedence(1)
1668
1669     virtual CYExpression *Replace(CYContext &context);
1670 };
1671
1672 struct CYTypedIdentifier :
1673     CYNext<CYTypedIdentifier>,
1674     CYThing
1675 {
1676     CYIdentifier *identifier_;
1677     CYTypeModifier *type_;
1678
1679     CYTypedIdentifier(CYIdentifier *identifier) :
1680         identifier_(identifier),
1681         type_(NULL)
1682     {
1683     }
1684
1685     virtual void Output(CYOutput &out) const;
1686 };
1687
1688 struct CYTypedParameter :
1689     CYNext<CYTypedParameter>
1690 {
1691     CYTypedIdentifier *typed_;
1692
1693     CYTypedParameter(CYTypedIdentifier *typed, CYTypedParameter *next) :
1694         CYNext<CYTypedParameter>(next),
1695         typed_(typed)
1696     {
1697     }
1698
1699     CYFunctionParameter *Parameters(CYContext &context);
1700     CYExpression *TypeSignature(CYContext &context, CYExpression *prefix);
1701 };
1702
1703 struct CYLambda :
1704     CYExpression
1705 {
1706     CYTypeModifier *type_;
1707     CYTypedParameter *parameters_;
1708     CYStatement *statements_;
1709
1710     CYLambda(CYTypeModifier *type, CYTypedParameter *parameters, CYStatement *statements) :
1711         type_(type),
1712         parameters_(parameters),
1713         statements_(statements)
1714     {
1715     }
1716
1717     CYPrecedence(1)
1718
1719     virtual CYExpression *Replace(CYContext &context);
1720     virtual void Output(CYOutput &out, CYFlags flags) const;
1721 };
1722
1723 struct CYTypeDefinition :
1724     CYStatement
1725 {
1726     CYTypedIdentifier *typed_;
1727
1728     CYTypeDefinition(CYTypedIdentifier *typed) :
1729         typed_(typed)
1730     {
1731     }
1732
1733     virtual CYStatement *Replace(CYContext &context);
1734     virtual void Output(CYOutput &out, CYFlags flags) const;
1735 };
1736
1737 namespace cy {
1738 namespace Syntax {
1739
1740 struct Catch :
1741     CYThing
1742 {
1743     CYIdentifier *name_;
1744     CYBlock code_;
1745
1746     Catch(CYIdentifier *name, CYStatement *statements) :
1747         name_(name),
1748         code_(statements)
1749     {
1750     }
1751
1752     void Replace(CYContext &context);
1753     virtual void Output(CYOutput &out) const;
1754 };
1755
1756 struct Try :
1757     CYStatement
1758 {
1759     CYBlock code_;
1760     Catch *catch_;
1761     CYFinally *finally_;
1762
1763     Try(CYStatement *statements, Catch *_catch, CYFinally *finally) :
1764         code_(statements),
1765         catch_(_catch),
1766         finally_(finally)
1767     {
1768     }
1769
1770     virtual CYStatement *Replace(CYContext &context);
1771     virtual void Output(CYOutput &out, CYFlags flags) const;
1772 };
1773
1774 struct Throw :
1775     CYStatement
1776 {
1777     CYExpression *value_;
1778
1779     Throw(CYExpression *value = NULL) :
1780         value_(value)
1781     {
1782     }
1783
1784     virtual CYStatement *Replace(CYContext &context);
1785     virtual void Output(CYOutput &out, CYFlags flags) const;
1786 };
1787
1788 } }
1789
1790 struct CYWith :
1791     CYStatement
1792 {
1793     CYExpression *scope_;
1794     CYStatement *code_;
1795
1796     CYWith(CYExpression *scope, CYStatement *code) :
1797         scope_(scope),
1798         code_(code)
1799     {
1800     }
1801
1802     virtual CYStatement *Replace(CYContext &context);
1803     virtual void Output(CYOutput &out, CYFlags flags) const;
1804 };
1805
1806 struct CYSwitch :
1807     CYStatement
1808 {
1809     CYExpression *value_;
1810     CYClause *clauses_;
1811
1812     CYSwitch(CYExpression *value, CYClause *clauses) :
1813         value_(value),
1814         clauses_(clauses)
1815     {
1816     }
1817
1818     virtual CYStatement *Replace(CYContext &context);
1819     virtual void Output(CYOutput &out, CYFlags flags) const;
1820 };
1821
1822 struct CYDebugger :
1823     CYStatement
1824 {
1825     CYDebugger()
1826     {
1827     }
1828
1829     virtual CYStatement *Replace(CYContext &context);
1830     virtual void Output(CYOutput &out, CYFlags flags) const;
1831 };
1832
1833 struct CYCondition :
1834     CYExpression
1835 {
1836     CYExpression *test_;
1837     CYExpression *true_;
1838     CYExpression *false_;
1839
1840     CYCondition(CYExpression *test, CYExpression *_true, CYExpression *_false) :
1841         test_(test),
1842         true_(_true),
1843         false_(_false)
1844     {
1845     }
1846
1847     CYPrecedence(15)
1848
1849     virtual CYExpression *Replace(CYContext &context);
1850     virtual void Output(CYOutput &out, CYFlags flags) const;
1851 };
1852
1853 struct CYAddressOf :
1854     CYPrefix
1855 {
1856     CYAddressOf(CYExpression *rhs) :
1857         CYPrefix(rhs)
1858     {
1859     }
1860
1861     virtual const char *Operator() const {
1862         return "&";
1863     }
1864
1865     CYAlphabetic(false)
1866
1867     virtual CYExpression *Replace(CYContext &context);
1868 };
1869
1870 struct CYIndirect :
1871     CYPrefix
1872 {
1873     CYIndirect(CYExpression *rhs) :
1874         CYPrefix(rhs)
1875     {
1876     }
1877
1878     virtual const char *Operator() const {
1879         return "*";
1880     }
1881
1882     CYAlphabetic(false)
1883
1884     virtual CYExpression *Replace(CYContext &context);
1885 };
1886
1887 #define CYReplace \
1888     virtual CYExpression *Replace(CYContext &context);
1889
1890 #define CYPostfix_(op, name, args...) \
1891     struct CY ## name : \
1892         CYPostfix \
1893     { args \
1894         CY ## name(CYExpression *lhs) : \
1895             CYPostfix(lhs) \
1896         { \
1897         } \
1898     \
1899         virtual const char *Operator() const { \
1900             return op; \
1901         } \
1902     };
1903
1904 #define CYPrefix_(alphabetic, op, name, args...) \
1905     struct CY ## name : \
1906         CYPrefix \
1907     { args \
1908         CY ## name(CYExpression *rhs) : \
1909             CYPrefix(rhs) \
1910         { \
1911         } \
1912     \
1913         CYAlphabetic(alphabetic) \
1914     \
1915         virtual const char *Operator() const { \
1916             return op; \
1917         } \
1918     };
1919
1920 #define CYInfix_(alphabetic, precedence, op, name, args...) \
1921     struct CY ## name : \
1922         CYInfix \
1923     { args \
1924         CY ## name(CYExpression *lhs, CYExpression *rhs) : \
1925             CYInfix(lhs, rhs) \
1926         { \
1927         } \
1928     \
1929         CYAlphabetic(alphabetic) \
1930         CYPrecedence(precedence) \
1931     \
1932         virtual const char *Operator() const { \
1933             return op; \
1934         } \
1935     };
1936
1937 #define CYAssignment_(op, name, args...) \
1938     struct CY ## name ## Assign : \
1939         CYAssignment \
1940     { args \
1941         CY ## name ## Assign(CYExpression *lhs, CYExpression *rhs) : \
1942             CYAssignment(lhs, rhs) \
1943         { \
1944         } \
1945     \
1946         virtual const char *Operator() const { \
1947             return op; \
1948         } \
1949     };
1950
1951 CYPostfix_("++", PostIncrement)
1952 CYPostfix_("--", PostDecrement)
1953
1954 CYPrefix_(true, "delete", Delete)
1955 CYPrefix_(true, "void", Void)
1956 CYPrefix_(true, "typeof", TypeOf)
1957 CYPrefix_(false, "++", PreIncrement)
1958 CYPrefix_(false, "--", PreDecrement)
1959 CYPrefix_(false, "+", Affirm)
1960 CYPrefix_(false, "-", Negate)
1961 CYPrefix_(false, "~", BitwiseNot)
1962 CYPrefix_(false, "!", LogicalNot)
1963
1964 CYInfix_(false, 5, "*", Multiply)
1965 CYInfix_(false, 5, "/", Divide)
1966 CYInfix_(false, 5, "%", Modulus)
1967 CYInfix_(false, 6, "+", Add, CYReplace)
1968 CYInfix_(false, 6, "-", Subtract)
1969 CYInfix_(false, 7, "<<", ShiftLeft)
1970 CYInfix_(false, 7, ">>", ShiftRightSigned)
1971 CYInfix_(false, 7, ">>>", ShiftRightUnsigned)
1972 CYInfix_(false, 8, "<", Less)
1973 CYInfix_(false, 8, ">", Greater)
1974 CYInfix_(false, 8, "<=", LessOrEqual)
1975 CYInfix_(false, 8, ">=", GreaterOrEqual)
1976 CYInfix_(true, 8, "instanceof", InstanceOf)
1977 CYInfix_(true, 8, "in", In)
1978 CYInfix_(false, 9, "==", Equal)
1979 CYInfix_(false, 9, "!=", NotEqual)
1980 CYInfix_(false, 9, "===", Identical)
1981 CYInfix_(false, 9, "!==", NotIdentical)
1982 CYInfix_(false, 10, "&", BitwiseAnd)
1983 CYInfix_(false, 11, "^", BitwiseXOr)
1984 CYInfix_(false, 12, "|", BitwiseOr)
1985 CYInfix_(false, 13, "&&", LogicalAnd)
1986 CYInfix_(false, 14, "||", LogicalOr)
1987
1988 CYAssignment_("=", )
1989 CYAssignment_("*=", Multiply)
1990 CYAssignment_("/=", Divide)
1991 CYAssignment_("%=", Modulus)
1992 CYAssignment_("+=", Add)
1993 CYAssignment_("-=", Subtract)
1994 CYAssignment_("<<=", ShiftLeft)
1995 CYAssignment_(">>=", ShiftRightSigned)
1996 CYAssignment_(">>>=", ShiftRightUnsigned)
1997 CYAssignment_("&=", BitwiseAnd)
1998 CYAssignment_("^=", BitwiseXOr)
1999 CYAssignment_("|=", BitwiseOr)
2000
2001 #endif/*CYCRIPT_PARSER_HPP*/