enum MyEnum {
  case Case1
  case Case2
  case Case3
}

fileprivate func new_name(_ e: MyEnum) -> Int {
switch e {
  case .Case1:
    return 1
  case .Case2:
    return 2
  case .Case3:
    return 3
  }
}

func foo2(_ e : MyEnum) -> Int {
  switch e {
  case .Case1:
    break
  case .Case2:
    break
  case .Case3:
    break
  }
  return new_name(e)
}