Scala example source code file (t0700.scala)

This example Scala source code file (t0700.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, char, elem, io, parser, parser, parsers, parsers, streamreader, stringreader, test, test, testparsers, testparsers, unit

The Scala t0700.scala source code

import java.io.{File,StringReader}

import scala.util.parsing.combinator.Parsers
import scala.util.parsing.input.{CharArrayReader, StreamReader}

class TestParsers extends Parsers {
  type Elem = Char

  def p: Parser[List[Int]] = rep(p1 | p2)
  def p1: Parser[Int] = 'a' ~ nl ~ 'b' ~ nl ^^^ 1
  def p2: Parser[Int] = 'a' ~ nl ^^^ 2
  def nl: Parser[Int] = rep(accept('\n') | accept('\r')) ^^^ 0
}

object Test {
  def main(args: Array[String]): Unit = {
    val tstParsers = new TestParsers
    val s = "a\na\na"
    val r1 = new CharArrayReader(s.toCharArray())
    val r2 = StreamReader(new StringReader(s))
    println(tstParsers.p(r1))
    println(tstParsers.p(r2))
  }
}