Scala example source code file (bug788.scala)

This example Scala source code file (bug788.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

expression, expressionimpl, expressionimpl, named, named, namedimpl, namedimpl, node, nodeimpl, nodeimpl, test

The Scala bug788.scala source code

package test;

trait Test {
  type Node <: NodeImpl;
  trait NodeImpl;
  type Expression <: Node with ExpressionImpl;
  trait ExpressionImpl extends NodeImpl { 
    def self : Expression;
  }
  type Named <: Node with NamedImpl;
  trait NamedImpl extends NodeImpl {
    def self : Named;
  }
  def asExpression(e : ExpressionImpl) : Named = {
    e match {
    case f : NamedImpl => f.self;
    }
  }
}