Enum Table

EnumTable.swift

protocol EnumTable {
    associatedtype TableSectionImpl: TableSection
}
extension EnumTable where Self: UITableViewController {
    func tableRow(indexPath: IndexPath) -> TableRow? {
        let section = TableSectionImpl(rawValue: indexPath.section)
        return section?.tableRow(index: indexPath.row)
    }
}

protocol TableSection: RawRepresentable where RawValue == Int {
    func tableRow(index: Int) -> TableRow?
}
enum Section: Int, TableSection {
    case first, second
    
    func tableRow(index: Int) -> TableRow? {
        switch self {
        case .first:
            return FirstSectionRow(rawValue: index)
        case .second:
            return SecondSectionRow(rawValue: index)
        }
    }
}

protocol TableRow {
    init?(rawValue: Int)
    var rawValue: Int { get }
}
enum FirstSectionRow: Int, TableRow {
    case foo, bar
}
enum SecondSectionRow: Int, TableRow {
    case baz
}