options {
  STATIC = false;
  JAVA_UNICODE_ESCAPE = true;
}

PARSER_BEGIN(Parser)
import edu.neu.ccs.demeter.dj.*;
import java.util.*;
import java.io.*;
import edu.neu.ccs.demeter.*;
public class Parser { 
  // oit is uugly.  Why isn't there a Character.valueOf(String)? 
  static char unescapifyChar(String s) { 
    char c = s.charAt(0); 
    if (c == '\\') { 
      switch (s.charAt(1)) { 
      case 'n': c = '\n'; break; 
      case 't': c = '\t'; break; 
      case 'b': c = '\b'; break; 
      case 'r': c = '\r'; break; 
      case 'f': c = '\f'; break; 
      case '\\': c = '\\'; break; 
      case '\'': c = '\''; break; 
      case '\"': c = '\"'; break; 
      default: 
       c = (char) Integer.parseInt(s.substring(1, s.length()), 8); 
       break; 
      } 
    } 
    return c; 
  } 
  // Even uglier... 
  static String unescapify(String s) { 
    char str[] = new char[s.length()]; 
    int i = 0, o = 0; 
    while (i < s.length()) { 
      char c = s.charAt(i++); 
      if (c == '\\') { 
       int j = i + 1; 
       while (j < s.length() && 
              Character.digit(s.charAt(j), 8) != -1) { 
         j++; 
       } 
       c = unescapifyChar(s.substring(i-1, j)); 
       i = j; 
      } 
      str[o++] = c; 
    } 
    return String.valueOf(str, 0, o); 
  } 
} 

PARSER_END(Parser)

Main _Main() : {
  Main it = null;
} {
  { it=new Main(); }
  { return it; }
}

Input _Input() : {
  Input it = null;
  ClassGraphh _classgraphh;
  SyntaxEnhancement _syntaxenhancement;
} {
  { it=new Input(); }
  _classgraphh=_ClassGraphh() { it.set_classgraphh(_classgraphh); }
  _syntaxenhancement=_SyntaxEnhancement() { it.set_syntaxenhancement(_syntaxenhancement); }
  { return it; }
}

ClassGraphh _ClassGraphh() : {
  ClassGraphh it = null;
  Definition_DList _classes;
} {
  { it=new ClassGraphh(); }
  _classes=_Definition_DList() { it.set_classes(_classes); }
  { return it; }
}

Definition _Definition() : {
  Definition it = null;
} {
  ( it=_ClassDef() )
  { return it; }
}

void common_Definition(Definition it) : {
} {
  { }
}

ClassDef _ClassDef() : {
  ClassDef it = null;
  ParamClassName _paramclassname;
  ClassParts _classparts;
} {
  { it=new ClassDef(); }
  _paramclassname=_ParamClassName() { it.set_paramclassname(_paramclassname); }
  _classparts=_ClassParts() { it.set_classparts(_classparts); }
  "."  common_Definition(it)
  { return it; }
}

ParamClassName _ParamClassName() : {
  ParamClassName it = null;
  ClassName _classname;
  ClassName_Commalist _parameters;
} {
  { it=new ParamClassName(); }
  _classname=_ClassName() { it.set_classname(_classname); }
  [  "("  _parameters=_ClassName_Commalist() { it.set_parameters(_parameters); }  ")"  ]
  { return it; }
}

ClassParts _ClassParts() : {
  ClassParts it = null;
} {
  ( it=_ConstOrAltClass() | it=_RepetitionClass() )
  { return it; }
}

void common_ClassParts(ClassParts it) : {
} {
  { }
}

ConstOrAltClass _ConstOrAltClass() : {
  ConstOrAltClass it = null;
} {
  ( it=_ConstructionClass() | it=_AlternationClass() )
  { return it; }
}

void common_ConstOrAltClass(ConstOrAltClass it) : {
  ClassElementWithSyntax_List _parts;
} {
  _parts=_ClassElementWithSyntax_List() { it.set_parts(_parts); }
  common_ClassParts(it)
  { }
}

ClassElement _ClassElement() : {
  ClassElement it = null;
} {
  ( it=_Part() | it=_OptionalPart() )
  { return it; }
}

void common_ClassElement(ClassElement it) : {
} {
  common_ClassElementWithSyntax(it)
  { }
}

ClassElementWithSyntax _ClassElementWithSyntax() : {
  ClassElementWithSyntax it = null;
} {
  ( it=_ClassElement() | it=_SandwichedClassElement() )
  { return it; }
}

void common_ClassElementWithSyntax(ClassElementWithSyntax it) : {
} {
  { }
}

SandwichedClassElement _SandwichedClassElement() : {
  SandwichedClassElement it = null;
  ClassElement_PSandwich _classelement_psandwich;
} {
  { it=new SandwichedClassElement(); }
  _classelement_psandwich=_ClassElement_PSandwich() { it.set_classelement_psandwich(_classelement_psandwich); }
  common_ClassElementWithSyntax(it)
  { return it; }
}

Part _Part() : {
  Part it = null;
  PartName _partname;
  ClassSpec _classspec;
} {
  { it=new Part(); }
  [  "<"  _partname=_PartName() { it.set_partname(_partname); }  ">"  ]
  _classspec=_ClassSpec() { it.set_classspec(_classspec); }
  common_ClassElement(it)
  { return it; }
}

OptionalPart _OptionalPart() : {
  OptionalPart it = null;
  Part_Sandwich _part;
} {
  { it=new OptionalPart(); }
  "["  _part=_Part_Sandwich() { it.set_part(_part); }
  "]"  common_ClassElement(it)
  { return it; }
}

ConstructionClass _ConstructionClass() : {
  ConstructionClass it = null;
} {
  { it=new ConstructionClass(); }
  "="  common_ConstOrAltClass(it)
  { return it; }
}

AlternationClass _AlternationClass() : {
  AlternationClass it = null;
  ClassSpec_Barlist _subclasses;
} {
  { it=new AlternationClass(); }
  ":"  [  _subclasses=_ClassSpec_Barlist() { it.set_subclasses(_subclasses); }  ]
  "common"  common_ConstOrAltClass(it)
  { return it; }
}

RepetitionClass _RepetitionClass() : {
  RepetitionClass it = null;
  RepeatedPart_Sandwich _sandwiched;
} {
  { it=new RepetitionClass(); }
  "~"  _sandwiched=_RepeatedPart_Sandwich() { it.set_sandwiched(_sandwiched); }
  common_ClassParts(it)
  { return it; }
}

RepeatedPart _RepeatedPart() : {
  RepeatedPart it = null;
  ClassSpec _nonempty;
  ClassSpec_Sandwich _repeated;
} {
  { it=new RepeatedPart(); }
  [  _nonempty=_ClassSpec() { it.set_nonempty(_nonempty); }  ]
  "{"  _repeated=_ClassSpec_Sandwich() { it.set_repeated(_repeated); }
  "}"  { return it; }
}

ClassSpec _ClassSpec() : {
  ClassSpec it = null;
  ClassName _classname;
  ClassSpec_Commalist _actual_parameters;
} {
  { it=new ClassSpec(); }
  _classname=_ClassName() { it.set_classname(_classname); }
  [  "("  _actual_parameters=_ClassSpec_Commalist() { it.set_actual_parameters(_actual_parameters); }  ")"  ]
  { return it; }
}

Syntax _Syntax() : {
  Syntax it = null;
} {
  ( it=_SyntaxToken() | it=_PrintCommand() )
  { return it; }
}

void common_Syntax(Syntax it) : {
} {
  { }
}

SyntaxToken _SyntaxToken() : {
  SyntaxToken it = null;
  String _string;
} {
  { it=new SyntaxToken(); }
  _string=_String() { it.set_string(_string); }
  common_Syntax(it)
  { return it; }
}

PrintCommand _PrintCommand() : {
  PrintCommand it = null;
} {
  ( it=_PrintIndent() | it=_PrintUnindent() | it=_PrintSkip() | it=_PrintSpace() )
  { return it; }
}

void common_PrintCommand(PrintCommand it) : {
} {
  common_Syntax(it)
  { }
}

PrintIndent _PrintIndent() : {
  PrintIndent it = null;
} {
  { it=new PrintIndent(); }
  "+"  common_PrintCommand(it)
  { return it; }
}

PrintUnindent _PrintUnindent() : {
  PrintUnindent it = null;
} {
  { it=new PrintUnindent(); }
  "-"  common_PrintCommand(it)
  { return it; }
}

PrintSkip _PrintSkip() : {
  PrintSkip it = null;
} {
  { it=new PrintSkip(); }
  "*l"  common_PrintCommand(it)
  { return it; }
}

PrintSpace _PrintSpace() : {
  PrintSpace it = null;
} {
  { it=new PrintSpace(); }
  "*s"  common_PrintCommand(it)
  { return it; }
}

ClassName _ClassName() : {
  ClassName it = null;
  Ident _ident;
} {
  { it=new ClassName(); }
  _ident=_Ident() { it.set_ident(_ident); }
  { return it; }
}

PartName _PartName() : {
  PartName it = null;
  Ident _name;
} {
  { it=new PartName(); }
  _name=_Ident() { it.set_name(_name); }
  { return it; }
}

SyntaxEnhancement _SyntaxEnhancement() : {
  SyntaxEnhancement it = null;
  Enhancement_List _enhancement_list;
} {
  { it=new SyntaxEnhancement(); }
  _enhancement_list=_Enhancement_List() { it.set_enhancement_list(_enhancement_list); }
  <EOF>
  { return it; }
}

Enhancement _Enhancement() : {
  Enhancement it = null;
  Where _where;
  EnhancementBody _enhancementbody;
} {
  { it=new Enhancement(); }
  _where=_Where() { it.set_where(_where); }
  _enhancementbody=_EnhancementBody() { it.set_enhancementbody(_enhancementbody); }
  { return it; }
}

EnhancementBody _EnhancementBody() : {
  EnhancementBody it = null;
} {
  ( it=_ClassBody() | it=_PartCoordinate() | it=_OptionalPartCoordinate() | it=_CollectionCoordinate() )
  { return it; }
}

void common_EnhancementBody(EnhancementBody it) : {
  SyntaxToken _syntaxtoken;
} {
  ":"  _syntaxtoken=_SyntaxToken() { it.set_syntaxtoken(_syntaxtoken); }
  { }
}

PartCoordinate _PartCoordinate() : {
  PartCoordinate it = null;
  SyntaxClassName _syntaxclassname;
  SyntaxPartName _syntaxpartname;
} {
  { it=new PartCoordinate(); }
  "part"  _syntaxclassname=_SyntaxClassName() { it.set_syntaxclassname(_syntaxclassname); }
  "."  _syntaxpartname=_SyntaxPartName() { it.set_syntaxpartname(_syntaxpartname); }
  common_EnhancementBody(it)
  { return it; }
}

OptionalPartCoordinate _OptionalPartCoordinate() : {
  OptionalPartCoordinate it = null;
  SyntaxClassName _syntaxclassname;
  SyntaxPartName _syntaxpartname;
} {
  { it=new OptionalPartCoordinate(); }
  "inside"  "optional"  "part"  _syntaxclassname=_SyntaxClassName() { it.set_syntaxclassname(_syntaxclassname); }
  "."  _syntaxpartname=_SyntaxPartName() { it.set_syntaxpartname(_syntaxpartname); }
  common_EnhancementBody(it)
  { return it; }
}

ClassBody _ClassBody() : {
  ClassBody it = null;
  SyntaxClassName _syntaxclassname;
} {
  { it=new ClassBody(); }
  "class"  _syntaxclassname=_SyntaxClassName() { it.set_syntaxclassname(_syntaxclassname); }
  common_EnhancementBody(it)
  { return it; }
}

CollectionCoordinate _CollectionCoordinate() : {
  CollectionCoordinate it = null;
  SyntaxClassName _syntaxclassname;
  CurlyBracket _curlybracket;
} {
  { it=new CollectionCoordinate(); }
  "collection"  _syntaxclassname=_SyntaxClassName() { it.set_syntaxclassname(_syntaxclassname); }
  _curlybracket=_CurlyBracket() { it.set_curlybracket(_curlybracket); }
  common_EnhancementBody(it)
  { return it; }
}

CurlyBracket _CurlyBracket() : {
  CurlyBracket it = null;
} {
  ( it=_Left() | it=_Right() )
  { return it; }
}

void common_CurlyBracket(CurlyBracket it) : {
} {
  { }
}

Left _Left() : {
  Left it = null;
} {
  { it=new Left(); }
  "{"  common_CurlyBracket(it)
  { return it; }
}

Right _Right() : {
  Right it = null;
} {
  { it=new Right(); }
  "}"  common_CurlyBracket(it)
  { return it; }
}

SyntaxClassName _SyntaxClassName() : {
  SyntaxClassName it = null;
  Ident _ident;
} {
  { it=new SyntaxClassName(); }
  _ident=_Ident() { it.set_ident(_ident); }
  { return it; }
}

SyntaxPartName _SyntaxPartName() : {
  SyntaxPartName it = null;
  Ident _ident;
} {
  { it=new SyntaxPartName(); }
  _ident=_Ident() { it.set_ident(_ident); }
  { return it; }
}

Where _Where() : {
  Where it = null;
} {
  ( it=_Before() | it=_After() )
  { return it; }
}

void common_Where(Where it) : {
} {
  { }
}

Before _Before() : {
  Before it = null;
} {
  { it=new Before(); }
  "before"  common_Where(it)
  { return it; }
}

After _After() : {
  After it = null;
} {
  { it=new After(); }
  "after"  common_Where(it)
  { return it; }
}

ClassGraphVisitor _ClassGraphVisitor() : {
  ClassGraphVisitor it = null;
} {
  { it=new ClassGraphVisitor(); }
  { return it; }
}

CommandVisitor _CommandVisitor() : {
  CommandVisitor it = null;
} {
  { it=new CommandVisitor(); }
  { return it; }
}

ClassCommandVisitor _ClassCommandVisitor() : {
  ClassCommandVisitor it = null;
} {
  { it=new ClassCommandVisitor(); }
  { return it; }
}

CollectionCommandVisitor _CollectionCommandVisitor() : {
  CollectionCommandVisitor it = null;
} {
  { it=new CollectionCommandVisitor(); }
  { return it; }
}

PartCommandVisitor _PartCommandVisitor() : {
  PartCommandVisitor it = null;
} {
  { it=new PartCommandVisitor(); }
  { return it; }
}

Definition_DList _Definition_DList() : {
  Definition_DList it = null;
  Nonempty_Definition_DList _first;
} {
  { it=new Definition_DList(); }
  _first=_Nonempty_Definition_DList() { it.set_first(_first); }
  { return it; }
}

ClassName_Commalist _ClassName_Commalist() : {
  ClassName_Commalist it = null;
  Nonempty_ClassName_Commalist _first;
} {
  { it=new ClassName_Commalist(); }
  _first=_Nonempty_ClassName_Commalist() { it.set_first(_first); }
  { return it; }
}

ClassElementWithSyntax_List _ClassElementWithSyntax_List() : {
  ClassElementWithSyntax_List it = null;
  Nonempty_ClassElementWithSyntax_List _first;
} {
  { it=new ClassElementWithSyntax_List(); }
  [  _first=_Nonempty_ClassElementWithSyntax_List() { it.set_first(_first); }  ]
  { return it; }
}

ClassElement_PSandwich _ClassElement_PSandwich() : {
  ClassElement_PSandwich it = null;
  ClassElement_Sandwich _s;
} {
  { it=new ClassElement_PSandwich(); }
  "{"  _s=_ClassElement_Sandwich() { it.set_s(_s); }
  "}"  { return it; }
}

ClassElement_Sandwich _ClassElement_Sandwich() : {
  ClassElement_Sandwich it = null;
  Syntax_List _first;
  ClassElement _inner;
  Syntax_List _second;
} {
  { it=new ClassElement_Sandwich(); }
  _first=_Syntax_List() { it.set_first(_first); }
  _inner=_ClassElement() { it.set_inner(_inner); }
  _second=_Syntax_List() { it.set_second(_second); }
  { return it; }
}

Part_Sandwich _Part_Sandwich() : {
  Part_Sandwich it = null;
  Syntax_List _first;
  Part _inner;
  Syntax_List _second;
} {
  { it=new Part_Sandwich(); }
  _first=_Syntax_List() { it.set_first(_first); }
  _inner=_Part() { it.set_inner(_inner); }
  _second=_Syntax_List() { it.set_second(_second); }
  { return it; }
}

ClassSpec_Barlist _ClassSpec_Barlist() : {
  ClassSpec_Barlist it = null;
  Nonempty_ClassSpec_Barlist _first;
} {
  { it=new ClassSpec_Barlist(); }
  _first=_Nonempty_ClassSpec_Barlist() { it.set_first(_first); }
  { return it; }
}

RepeatedPart_Sandwich _RepeatedPart_Sandwich() : {
  RepeatedPart_Sandwich it = null;
  Syntax_List _first;
  RepeatedPart _inner;
  Syntax_List _second;
} {
  { it=new RepeatedPart_Sandwich(); }
  _first=_Syntax_List() { it.set_first(_first); }
  _inner=_RepeatedPart() { it.set_inner(_inner); }
  _second=_Syntax_List() { it.set_second(_second); }
  { return it; }
}

ClassSpec_Sandwich _ClassSpec_Sandwich() : {
  ClassSpec_Sandwich it = null;
  Syntax_List _first;
  ClassSpec _inner;
  Syntax_List _second;
} {
  { it=new ClassSpec_Sandwich(); }
  _first=_Syntax_List() { it.set_first(_first); }
  _inner=_ClassSpec() { it.set_inner(_inner); }
  _second=_Syntax_List() { it.set_second(_second); }
  { return it; }
}

Syntax_List _Syntax_List() : {
  Syntax_List it = null;
  Nonempty_Syntax_List _first;
} {
  { it=new Syntax_List(); }
  [  _first=_Nonempty_Syntax_List() { it.set_first(_first); }  ]
  { return it; }
}

ClassSpec_Commalist _ClassSpec_Commalist() : {
  ClassSpec_Commalist it = null;
  Nonempty_ClassSpec_Commalist _first;
} {
  { it=new ClassSpec_Commalist(); }
  _first=_Nonempty_ClassSpec_Commalist() { it.set_first(_first); }
  { return it; }
}

Enhancement_List _Enhancement_List() : {
  Enhancement_List it = null;
  Nonempty_Enhancement_List _first;
} {
  { it=new Enhancement_List(); }
  [  _first=_Nonempty_Enhancement_List() { it.set_first(_first); }  ]
  { return it; }
}

Nonempty_Definition_DList _Nonempty_Definition_DList() : {
  Nonempty_Definition_DList it = null;
  Definition _it;
  Nonempty_Definition_DList _next;
} {
  { it=new Nonempty_Definition_DList(); }
  _it=_Definition() { it.set_it(_it); }
  [  _next=_Nonempty_Definition_DList() { it.set_next(_next); }  ]
  { return it; }
}

Nonempty_ClassName_Commalist _Nonempty_ClassName_Commalist() : {
  Nonempty_ClassName_Commalist it = null;
  ClassName _it;
  Nonempty_ClassName_Commalist _next;
} {
  { it=new Nonempty_ClassName_Commalist(); }
  _it=_ClassName() { it.set_it(_it); }
  [  ","  _next=_Nonempty_ClassName_Commalist() { it.set_next(_next); }  ]
  { return it; }
}

Nonempty_ClassElementWithSyntax_List _Nonempty_ClassElementWithSyntax_List() : {
  Nonempty_ClassElementWithSyntax_List it = null;
  ClassElementWithSyntax _it;
  Nonempty_ClassElementWithSyntax_List _next;
} {
  { it=new Nonempty_ClassElementWithSyntax_List(); }
  _it=_ClassElementWithSyntax() { it.set_it(_it); }
  [  _next=_Nonempty_ClassElementWithSyntax_List() { it.set_next(_next); }  ]
  { return it; }
}

Nonempty_ClassSpec_Barlist _Nonempty_ClassSpec_Barlist() : {
  Nonempty_ClassSpec_Barlist it = null;
  ClassSpec _it;
  Nonempty_ClassSpec_Barlist _next;
} {
  { it=new Nonempty_ClassSpec_Barlist(); }
  _it=_ClassSpec() { it.set_it(_it); }
  [  "|"  _next=_Nonempty_ClassSpec_Barlist() { it.set_next(_next); }  ]
  { return it; }
}

Nonempty_Syntax_List _Nonempty_Syntax_List() : {
  Nonempty_Syntax_List it = null;
  Syntax _it;
  Nonempty_Syntax_List _next;
} {
  { it=new Nonempty_Syntax_List(); }
  _it=_Syntax() { it.set_it(_it); }
  [  _next=_Nonempty_Syntax_List() { it.set_next(_next); }  ]
  { return it; }
}

Nonempty_ClassSpec_Commalist _Nonempty_ClassSpec_Commalist() : {
  Nonempty_ClassSpec_Commalist it = null;
  ClassSpec _it;
  Nonempty_ClassSpec_Commalist _next;
} {
  { it=new Nonempty_ClassSpec_Commalist(); }
  _it=_ClassSpec() { it.set_it(_it); }
  [  ","  _next=_Nonempty_ClassSpec_Commalist() { it.set_next(_next); }  ]
  { return it; }
}

Nonempty_Enhancement_List _Nonempty_Enhancement_List() : {
  Nonempty_Enhancement_List it = null;
  Enhancement _it;
  Nonempty_Enhancement_List _next;
} {
  { it=new Nonempty_Enhancement_List(); }
  _it=_Enhancement() { it.set_it(_it); }
  [  _next=_Nonempty_Enhancement_List() { it.set_next(_next); }  ]
  { return it; }
}


boolean _boolean() : { Token t; }{
  ( t=<TRUE> { return true; }
  | t=<FALSE> { return false; }
  )
}

char _char() : { Token t; } {
    t=<CHARACTER_LITERAL> { 
       String s = t.image; 
       return unescapifyChar(s.substring(1, s.length()-1)); 
    } 
} 

byte _byte() : { int i; } 
{ i=_int() { return (byte) i; } } 

short _short() : { int i; } 
{ i=_int() { return (short) i; } } 

int _int() : { Number num; } 
{ num=_Number() { return num.intValue(); } } 

long _long() : { Number num; } 
{ num=_Number() { return num.longValue(); } } 

float _float() : { Number num; } 
{ num=_Number() { return num.floatValue(); } } 

double _double() : { Number num; } 
{ num=_Number() { return num.doubleValue(); } } 

Boolean _Boolean() : { Token t; }{
  ( t=<TRUE> { return Boolean.TRUE; }
  | t=<FALSE> { return Boolean.FALSE; }
  )
}

Character _Character() : { char c; } 
{ c=_char() { return new Character(c); } }

Integer _Integer() : { int i; } 
{ i = _int() { return new Integer(i); } }

Long _Long() : { long l; } 
{ l=_long() { return new Long(l); } } 

Float _Float() : { float f; } 
{ f=_float() { return new Float(f); } } 

Double _Double() : { double d; } 
{ d=_double() { return new Double(d); } } 

Number _Number() : 
{
    Token t; 
    String s = null; 
    int radix = 0; 
    Number num = null; 
} {
  ( 
    ( t=<DECIMAL_LITERAL> { 
       s = t.image; 
       radix = 10; 
      } 
    | t=<HEX_LITERAL> { 
       // Strip off the "0x". 
       s = t.image.substring(2, t.image.length()); 
       radix = 16; 
      } 
    | t=<OCTAL_LITERAL> { 
       s = t.image; 
       radix = 8; 
      } 
    ) { 
       switch (s.charAt(s.length()-1)) { 
       case 'l': case 'L': 
         s = s.substring(0, s.length()-1);
         num = new Long(new java.math.BigInteger(s, radix).longValue());
         break; 
       default: 
         num = new Integer(new java.math.BigInteger(s, radix).intValue());
         break; 
       } 
    } 
  | t=<FLOATING_POINT_LITERAL> { 
       s = t.image; 
       switch (s.charAt(s.length()-1)) { 
       case 'd': case 'D': 
           num = Double.valueOf(s.substring(0, s.length()-1)); 
           break; 
       case 'f': case 'F': 
           num = Float.valueOf(s.substring(0, s.length()-1)); 
           break; 
       default: 
           num = Float.valueOf(s); 
           break; 
       } 
    } 
  ) { return num; } 
} 

String _String() : { Token t; } {
    t=<STRING_LITERAL> { 
       String s = t.image; 
       return unescapify(s.substring(1, s.length()-1)); 
    } 
} 

StringBuffer _StringBuffer() : { String s; } 
{ s=_String() { return new StringBuffer(s); } }

Ident _Ident() : { Token t; } {
    t=<IDENTIFIER> { 
       return new Ident(t.image); 
    } 
} 

Text _Text() : { Token t; } {
    t=<TEXT_LITERAL> { 
       String s = t.image; 
       return new Text(s.substring(2, s.length()-2)); 
    } 
} 

Line _Line() : { Token t; } {
    { token_source.SwitchTo(1); } 
    t=<LINE> { 
       return new Line(t.image); 
    } 
} 

Word _Word() : { Token t; } {
    { token_source.SwitchTo(2); } 
    t=<WORD> { 
       return new Word(t.image); 
    } 
} 

// Lexical specification (largely taken from Java.jack): 

SKIP : {
  " " 
| "\t" 
| "\n" 
| "\r" 
| <"//" (~["\n","\r"])* ("\n"|"\r\n")> 
| <"/*" (~["*"])* "*" (~["/"] (~["*"])* "*")* "/"> 
} 
 
TOKEN : { /* LITERALS */
  < DECIMAL_LITERAL: ["1"-"9"] (["0"-"9"])* (["l","L"])? > 
| 
  < HEX_LITERAL: "0" ["x","X"] (["0"-"9","a"-"f","A"-"F"])+ (["l","L"])? > 
| 
  < OCTAL_LITERAL: "0" (["0"-"7"])* (["l","L"])? > 
| 
  < FLOATING_POINT_LITERAL: 
        (["0"-"9"])+ "." (["0"-"9"])+ (<EXPONENT>)? (["f","F","d","D"])? 
      | "." (["0"-"9"])+ (<EXPONENT>)? (["f","F","d","D"])? 
      | (["0"-"9"])+ <EXPONENT> (["f","F","d","D"])? 
      | (["0"-"9"])+ (<EXPONENT>)? ["f","F","d","D"] 
  > 
| 
  < #EXPONENT: ["e","E"] (["+","-"])? (["0"-"9"])+ > 
| 
  < CHARACTER_LITERAL: 
      "'" 
      (   (~["\'","\\","\n","\r"]) 
        | ("\\" 
            ( ["n","t","b","r","f","\\","\'","\""] 
            | ["0"-"7"] ( ["0"-"7"] )? 
            | ["0"-"3"] ["0"-"7"] ["0"-"7"] 
            ) 
          ) 
      ) 
      "'" 
  >   
| 
  < STRING_LITERAL: 
      "\"" 
      (   (~["\"","\\","\n","\r"]) 
        | ("\\" 
            ( ["n","t","b","r","f","\\","\'","\""] 
            | ["0"-"7"] ( ["0"-"7"] )? 
            | ["0"-"3"] ["0"-"7"] ["0"-"7"] 
            ) 
          ) 
      )* 
      "\"" 
  > 
| 
  < TEXT_LITERAL: 
     ( "(@" 
           (~["@"])* 
           ( "@" ~[")"] 
             (~["@"])* 
           )* 
      "@)" ) 
    | ( "{{" 
           (~["}"])* 
           ( "}" ~["}"] 
             (~["}"])* 
           )* 
      "}}" ) 
  > 
| 
  < TRUE: "true" >
| 
  < FALSE: "false" >
} 

TOKEN : { /* IDENTIFIERS */ 
  < IDENTIFIER: <LETTER> (<LETTER>|<DIGIT>)* >
|
  < #LETTER:
      [
       "\u0024",
       "\u0041"-"\u005a",
       "\u005f",
       "\u0061"-"\u007a",
       "\u00c0"-"\u00d6",
       "\u00d8"-"\u00f6",
       "\u00f8"-"\u00ff",
       "\u0100"-"\u1fff",
       "\u3040"-"\u318f",
       "\u3300"-"\u337f",
       "\u3400"-"\u3d2d",
       "\u4e00"-"\u9fff",
       "\uf900"-"\ufaff"
      ]
  >
|
  < #DIGIT:
      [
       "\u0030"-"\u0039",
       "\u0660"-"\u0669",
       "\u06f0"-"\u06f9",
       "\u0966"-"\u096f",
       "\u09e6"-"\u09ef",
       "\u0a66"-"\u0a6f",
       "\u0ae6"-"\u0aef",
       "\u0b66"-"\u0b6f",
       "\u0be7"-"\u0bef",
       "\u0c66"-"\u0c6f",
       "\u0ce6"-"\u0cef",
       "\u0d66"-"\u0d6f",
       "\u0e50"-"\u0e59",
       "\u0ed0"-"\u0ed9",
       "\u1040"-"\u1049"
      ]
  >
}

<Line> TOKEN : {
  < LINE: (~["\n","\r"])* > : DEFAULT
}

<Word> SKIP :  { " " | "\t" | "\n" | "\r" }
<Word> TOKEN : {
  < WORD: (~[" ","\t","\n","\r"])* > : DEFAULT
}