Scala example source code file (Main.scala)

This example Scala source code file (Main.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

array, error, error, failure, failure, file, io, iso-8859-1, main, remainder, remainder, streamreader, success, success, testparser

The Scala Main.scala source code

package examples.parsing.lambda

import scala.util.parsing.combinator.Parsers
import scala.util.parsing.input.StreamReader

import java.io.File
import java.io.FileInputStream
import java.io.InputStreamReader

/**
 * Parser for an untyped lambda calculus
 *
 * Usage: scala examples.parsing.lambda.Main <file>
 *
 * (example files: see test/ *.kwi)
 *
 * @author Miles Sabin (adapted slightly by Adriaan Moors)
 */
object Main extends Application with TestParser
{
  override def main(args: Array[String]) =
  {
    val in = StreamReader(new InputStreamReader(new FileInputStream(new File(args(0))), "ISO-8859-1"))
    parse(in) match
    {
      case Success(term, _) =>
      {
        Console.println("Term: \n"+term)
      }
      case Failure(msg, remainder) => Console.println("Failure: "+msg+"\n"+"Remainder: \n"+remainder.pos.longString) 
      case Error(msg, remainder) => Console.println("Error: "+msg+"\n"+"Remainder: \n"+remainder.pos.longString) 
    }
  }
}