1 // A simple lexer inspired by work of Sulzmann & Lu

     2 //==================================================

     3 

     4 

     5 object Delexer {

     6 

     7 import java.io._

     8 

     9 abstract class Token extends Serializable 

    10 case object T_SEMI extends Token

    11 case object T_LPAREN extends Token

    12 case object T_RPAREN extends Token

    13 case class T_ID(s: String) extends Token

    14 case class T_OP(s: String) extends Token

    15 case class T_NUM(n: Int) extends Token

    16 case class T_KWD(s: String) extends Token

    17 case class T_STR(s: String) extends Token

    18 

    19 def deserialise[T](fname: String) : T = {

    20   val in = new ObjectInputStream(new FileInputStream(fname))

    21   val data = in.readObject.asInstanceOf[T]

    22   in.close

    23   data

    24 }

    25 

    26 def main(args: Array[String]) = {

    27   println("TEST\n" ++ deserialise[List[Token]]("/tmp/nflx").mkString)  

    28 }

    29 

    30 

    31 }