super in ClojureDart

super.md

Accessing super members in ClojureDart

In ClojureDart deftype (and reify) can extend abstract classes and, as a consequence, we need a way to call super implementations (even on fields because of getters/setters).

For example, this Dart

class WebViewExampleState extends State<WebViewExample> {
  @override
  void initState() {
    super.initState();
    if (Platform.isAndroid) WebView.platform = SurfaceAndroidWebView();
  }
  ...
}

can be translated to this ClojureDart:

(deftype WebViewExampleState
  :extends #/(State WebViewExample)
  (initState [^{:super daddy} self]
    (.initState daddy)
    (when Platform/isAndroid (set! WebView/platform (SurfaceAndroidWebView.)))
  ...)

So the :super metadata on the this parameter of a method allows to introduce a name for super.

Super calls can even occur in closures (fns or reifies) they'll act on the right instance, not on the super of the closure!