Scala example source code file (Tester.scala)

This example Scala source code file (Tester.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

lexical, lexical, string, string, tester, tester, tokenparsers, tokenparsers

The Scala Tester.scala source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2006-2011, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */


package scala.util.parsing.combinator.testing
import scala.util.parsing.combinator._

import scala.util.parsing.combinator.lexical.Lexical
import scala.util.parsing.combinator.syntactical.TokenParsers

/** <p>
 *    Facilitates testing a given parser on various input strings.
 *  </p>
 *  <p>
 *    Example use:
 *  </p>
 *    <b>val syntactic = new MyParsers
 *  <p>
 *    and
 *  </p>
 *    <b>val parser = syntactic.term
 *  <p>
 *    (if MyParsers extends TokenParsers with a parser called `term')
 *  </p>
 *
 * @author Martin Odersky, Adriaan Moors
 */
abstract class Tester {

  val syntactic: TokenParsers { val lexical: Lexical }
  val parser: syntactic.Parser[Any]


  /** Scans a String (using a `syntactic.lexical.Scanner'), parses it
   *  using <code>phrase(parser), and  prints the input and the
   *  parsed result to the console. 
   */
  def test(in: String) {
    Console.println("\nin : "+in)
    Console.println(syntactic.phrase[Any](parser)(new syntactic.lexical.Scanner(in)))
  }
}