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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))
}
}
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