pub trait ObjectSubclassExt: ObjectSubclass {
    fn instance(&self) -> Self::Type;
    fn from_instance(obj: &Self::Type) -> &Self;
    fn instance_data<U>(&self, type_: Type) -> Option<&U>
        U: 'static + Any + Send + Sync
; }
Expand description

Extension methods for all ObjectSubclass impls.

Required methods

Returns the corresponding object instance.

Returns the implementation from an instance.

Returns a pointer to the instance implementation specific data.

This is used for the subclassing infrastructure to store additional instance data.