options {
  STATIC = false;
  JAVA_UNICODE_ESCAPE = true;
}

PARSER_BEGIN(Parser)
import java.io.*;
import edu.neu.ccs.demeterf.*;
import edu.neu.ccs.demeterf.util.Util;
import edu.neu.ccs.demeterf.control.*;
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;
  Exp _e;
} {
  { it=new Main(); }
  _e=_Exp() { it.set_e(_e); }
  { return it; }
}

Exp _Exp() : {
  Exp it = null;
} {
  ( it=_Var() | it=_Num() | it=_If() | it=_Lambda() | it=_Call() | it=_Op() | it=_Bool() | it=_LetRec() )
  { return it; }
}

void common_Exp(Exp it) : {
} {
  { }
}

LetRec _LetRec() : {
  LetRec it = null;
  Arg _bind;
  Exp _e;
  Exp _body;
} {
  { it=new LetRec(); }
  "(letrec"  "("  _bind=_Arg() { it.set_bind(_bind); }
  _e=_Exp() { it.set_e(_e); }
  ")"  _body=_Exp() { it.set_body(_body); }
  ")"  common_Exp(it)
  { return it; }
}

Lambda _Lambda() : {
  Lambda it = null;
  Arg _formal;
  Exp _body;
} {
  { it=new Lambda(); }
  "(lambda"  "("  _formal=_Arg() { it.set_formal(_formal); }
  ")"  _body=_Exp() { it.set_body(_body); }
  ")"  common_Exp(it)
  { return it; }
}

Var _Var() : {
  Var it = null;
} {
  ( it=_Sym() | it=_Addr() )
  { return it; }
}

void common_Var(Var it) : {
} {
  common_Exp(it)
  { }
}

Sym _Sym() : {
  Sym it = null;
  Ident _name;
} {
  { it=new Sym(); }
  _name=_Ident() { it.set_name(_name); }
  common_Var(it)
  { return it; }
}

Addr _Addr() : {
  Addr it = null;
  Integer _offset;
} {
  { it=new Addr(); }
  "{"  _offset=_Integer() { it.set_offset(_offset); }
  "}"  common_Var(it)
  { return it; }
}

Arg _Arg() : {
  Arg it = null;
  Type _type;
  Sym _sym;
} {
  { it=new Arg(); }
  _type=_Type() { it.set_type(_type); }
  _sym=_Sym() { it.set_sym(_sym); }
  { return it; }
}

Num _Num() : {
  Num it = null;
  Integer _value;
} {
  { it=new Num(); }
  _value=_Integer() { it.set_value(_value); }
  common_Exp(it)
  { return it; }
}

Bool _Bool() : {
  Bool it = null;
} {
  ( it=_True() | it=_False() )
  { return it; }
}

void common_Bool(Bool it) : {
} {
  common_Exp(it)
  { }
}

True _True() : {
  True it = null;
} {
  { it=new True(); }
  "#t"  common_Bool(it)
  { return it; }
}

False _False() : {
  False it = null;
} {
  { it=new False(); }
  "#f"  common_Bool(it)
  { return it; }
}

If _If() : {
  If it = null;
  Exp _cond;
  Exp _then;
  Exp _otherwise;
} {
  { it=new If(); }
  "(if"  _cond=_Exp() { it.set_cond(_cond); }
  _then=_Exp() { it.set_then(_then); }
  _otherwise=_Exp() { it.set_otherwise(_otherwise); }
  ")"  common_Exp(it)
  { return it; }
}

Call _Call() : {
  Call it = null;
  Exp _proc;
  ExpList _args;
} {
  { it=new Call(); }
  "("  _proc=_Exp() { it.set_proc(_proc); }
  _args=_ExpList() { it.set_args(_args); }
  ")"  common_Exp(it)
  { return it; }
}

Op _Op() : {
  Op it = null;
} {
  ( it=_Plus() | it=_Minus() | it=_Mult() | it=_Div() | it=_Less() | it=_Greater() | it=_Or() | it=_And() | it=_Eq() | it=_Print() )
  { return it; }
}

void common_Op(Op it) : {
} {
  common_Exp(it)
  { }
}

Plus _Plus() : {
  Plus it = null;
} {
  { it=new Plus(); }
  "+"  common_Op(it)
  { return it; }
}

Minus _Minus() : {
  Minus it = null;
} {
  { it=new Minus(); }
  "-"  common_Op(it)
  { return it; }
}

Div _Div() : {
  Div it = null;
} {
  { it=new Div(); }
  "/"  common_Op(it)
  { return it; }
}

Mult _Mult() : {
  Mult it = null;
} {
  { it=new Mult(); }
  "*"  common_Op(it)
  { return it; }
}

Less _Less() : {
  Less it = null;
} {
  { it=new Less(); }
  "<"  common_Op(it)
  { return it; }
}

Greater _Greater() : {
  Greater it = null;
} {
  { it=new Greater(); }
  ">"  common_Op(it)
  { return it; }
}

Or _Or() : {
  Or it = null;
} {
  { it=new Or(); }
  "or"  common_Op(it)
  { return it; }
}

And _And() : {
  And it = null;
} {
  { it=new And(); }
  "and"  common_Op(it)
  { return it; }
}

Eq _Eq() : {
  Eq it = null;
} {
  { it=new Eq(); }
  "="  common_Op(it)
  { return it; }
}

Print _Print() : {
  Print it = null;
  Type _type;
} {
  { it=new Print(); }
  "print<"  _type=_Type() { it.set_type(_type); }
  ">"  common_Op(it)
  { return it; }
}

Type _Type() : {
  Type it = null;
} {
  ( it=_BoolT() | it=_NumT() | it=_FuncT() )
  { return it; }
}

void common_Type(Type it) : {
} {
  { }
}

BoolT _BoolT() : {
  BoolT it = null;
} {
  { it=new BoolT(); }
  "bool"  common_Type(it)
  { return it; }
}

NumT _NumT() : {
  NumT it = null;
} {
  { it=new NumT(); }
  "int"  common_Type(it)
  { return it; }
}

FuncT _FuncT() : {
  FuncT it = null;
  TypeList _args;
  Type _ret;
} {
  { it=new FuncT(); }
  "("  _args=_TypeList() { it.set_args(_args); }
  "-> "  _ret=_Type() { it.set_ret(_ret); }
  ")"  common_Type(it)
  { return it; }
}

SymList _SymList() : {
  SymList it = null;
} {
  ( it=_SymCons() | it=_SymEmpty() )
  { return it; }
}

void common_SymList(SymList it) : {
} {
  { }
}

SymCons _SymCons() : {
  SymCons it = null;
  Sym _first;
  SymList _rest;
} {
  { it=new SymCons(); }
  _first=_Sym() { it.set_first(_first); }
  _rest=_SymList() { it.set_rest(_rest); }
  common_SymList(it)
  { return it; }
}

SymEmpty _SymEmpty() : {
  SymEmpty it = null;
} {
  { it=new SymEmpty(); }
  common_SymList(it)
  { return it; }
}

ArgList _ArgList() : {
  ArgList it = null;
} {
  ( it=_ArgCons() | it=_ArgEmpty() )
  { return it; }
}

void common_ArgList(ArgList it) : {
} {
  { }
}

ArgCons _ArgCons() : {
  ArgCons it = null;
  Arg _first;
  ArgList _rest;
} {
  { it=new ArgCons(); }
  "("  _first=_Arg() { it.set_first(_first); }
  ")"  _rest=_ArgList() { it.set_rest(_rest); }
  common_ArgList(it)
  { return it; }
}

ArgEmpty _ArgEmpty() : {
  ArgEmpty it = null;
} {
  { it=new ArgEmpty(); }
  common_ArgList(it)
  { return it; }
}

ExpList _ExpList() : {
  ExpList it = null;
} {
  ( it=_ExpCons() | it=_ExpEmpty() )
  { return it; }
}

void common_ExpList(ExpList it) : {
} {
  { }
}

ExpCons _ExpCons() : {
  ExpCons it = null;
  Exp _first;
  ExpList _rest;
} {
  { it=new ExpCons(); }
  _first=_Exp() { it.set_first(_first); }
  _rest=_ExpList() { it.set_rest(_rest); }
  common_ExpList(it)
  { return it; }
}

ExpEmpty _ExpEmpty() : {
  ExpEmpty it = null;
} {
  { it=new ExpEmpty(); }
  common_ExpList(it)
  { return it; }
}

TypeList _TypeList() : {
  TypeList it = null;
} {
  ( it=_TypeCons() | it=_TypeEmpty() )
  { return it; }
}

void common_TypeList(TypeList it) : {
} {
  { }
}

TypeCons _TypeCons() : {
  TypeCons it = null;
  Type _first;
  TypeList _rest;
} {
  { it=new TypeCons(); }
  _first=_Type() { it.set_first(_first); }
  _rest=_TypeList() { it.set_rest(_rest); }
  common_TypeList(it)
  { return it; }
}

TypeEmpty _TypeEmpty() : {
  TypeEmpty it = null;
} {
  { it=new TypeEmpty(); }
  common_TypeList(it)
  { 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
}