TraverseSuperViews.swift

class ViewTraverser {
    private func traverseSuperViews(view: UIView) -> [Int : UIView] {
        var views: [Int: UIView] = [:]
        var inputView: UIView? = view
        while inputView != nil {
            guard let tag = inputView?.tag, let view = inputView else { continue }
            views[tag] = view
            inputView = view.superview
        }
        return views
    }
}