implement super-type fields and methods

sdk-builder/src/main.rs

@@ -681,6 +681,29 @@ pub mod rust {
 
             // TODO: impl super-type fields and methods.
 
+            let mut sup = class.super_class;
+            let super_traits = core::iter::from_fn(|| {
+                if let Some(key) = sup {
+                    let next = self.sdk.get_object(&key);
+                    sup = next.and_then(|next| next.super_class());
+                    next
+                } else {
+                    None
+                }
+            })
+            .map(|ty| ty.unique_name())
+            .map(|super_name| {
+                let fields = format_ident!("{super_name}Fields");
+                let methods = format_ident!("{super_name}Methods");
+
+                // FIXME: full path here? meaning I need the package name aswell.
+
+                quote! {
+                    impl #fields for #name {}
+                    impl #methods for #name {}
+                }
+            });
+
             quote! {
                 #[repr(transparent)]
                 #[derive(Debug)]