ClosureGestureRecognizer.swift

class ClosureGestureRecognizer<GestureRecognizer: UIGestureRecognizer> {
    fileprivate var recognizer: GestureRecognizer
    private var actionHandler: ((GestureRecognizer) -> Void)

    init(action: @escaping (GestureRecognizer) -> ()) {
        self.recognizer = GestureRecognizer()
        self.actionHandler = action
        self.recognizer.addTarget(self, action: #selector(handleAction))
    }

    @objc private func handleAction() {
        actionHandler(recognizer)
    }
}

extension UIView {
    func addGestureRecognizer(_ gestureRecognizer: ClosureGestureRecognizer) {
        self.addGestureRecognizer(gestureRecognizer.recognizer)
    }
}