More concise way to nest enums for access by switch statements in Swift? [closed]

Question

I have a nested enum like so, for describing basic relative positioning:

  enum Location {
    enum Top {
      case Left
      case Right
      case Center
    }
    enum Bottom {
      case Left
      case Right
      case Center
    }
    enum Left {
      case Top
      case Bottom
      case Center
    }
    enum Right {
      case Top
      case Bottom
      case Center
    }
    enum Center {
      case Center
    }
  }

If I try to run a switch statement with it, none of the enums show up as possible cases, and if I try to list them I get an error:

func switchOverEnum(enumCase: Location) {
  switch enumCase {
  case .Top:
    print("hey this didn't cause an error whoops no it did")
  }
}

The error is: Enum case 'Top' not found in type 'Location'.

Now there's a version of this question here, and according to the most helpful answer, it should be done like this:

   enum Location {
    enum TopLocations {
      case Left
      case Right
      case Center
    }
    enum BottomLocations {
      case Left
      case Right
      case Center
    }
    enum LeftLocations {
      case Top
      case Bottom
      case Center
    }
    enum RightLocations {
      case Top
      case Bottom
      case Center
    }
    enum CenterLocations {
      case Top
      case Bottom
      case Left
      case Right
      case Center
    }
    case Top(TopLocations)
    case Bottom(BottomLocations)
    case Left(LeftLocations)
    case Right(RightLocations)
    case Center(CenterLocations)
  }

Which totally works, but seems a bit clunky, or inelegant, or un-Swift-like. Is this really the most concise way?

Answer 1

I think this would be much more concisely expressed with two enums and a tuple. Try this in a playground:

enum HorizontalPosition {
    case Left
    case Right
    case Center
}

enum VerticalPosition {
    case Top
    case Bottom
    case Center
}

typealias Location = (horizontal: HorizontalPosition, vertical: VerticalPosition)

let aLocation = Location(horizontal: .Left, vertical: .Bottom)

switch aLocation {

case (.Left, .Bottom): print ("left bottom")
case (.Center, .Center): print ("center center")
default: print ("everything else")
}