Scala example source code file (RichClass.scala)

This example Scala source code file (RichClass.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

boolean, class, classtag, compiler, jclass, list, malformed, nsc, reflection, richclass, string

The RichClass.scala Scala example source code

/* NSC -- new Scala compiler
 * Copyright 2005-2013 LAMP/EPFL
 * @author  Paul Phillips
 */

package scala.tools.nsc
package interpreter

import scala.reflect.{ ClassTag, classTag }

class RichClass[T](val clazz: Class[T]) {
  def toTag: ClassTag[T] = ClassTag[T](clazz)

  // Sadly isAnonymousClass does not return true for scala anonymous
  // classes because our naming scheme is not doing well against the
  // jvm's many assumptions.
  def isScalaAnonymous = (
    try clazz.isAnonymousClass || (clazz.getName contains "$anon$")
    catch { case _: java.lang.InternalError => false }  // good ol' "Malformed class name"
  )

  def supertags: List[ClassTag[_]] = supers map (_.toTag)
  def superNames: List[String]    = supers map (_.getName)
  def interfaces: List[JClass]    = supers filter (_.isInterface)

  def hasAncestorName(f: String => Boolean) = superNames exists f
  def hasAncestor(f: JClass => Boolean) = supers exists f

  def supers: List[JClass] = {
    def loop(x: JClass): List[JClass] = x.getSuperclass match {
      case null   => List(x)
      case sc     => x :: (x.getInterfaces.toList flatMap loop) ++ loop(sc)
    }
    loop(clazz).distinct
  }
}