Trait libhelium::subclass::prelude::ObjectSubclassExt

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>
    where
        U: 'static + Any + Send + Sync;
}

Extension methods for all ObjectSubclass impls.

Required Methods

fn instance(&self) -> Self::Type

Returns the corresponding object instance.

fn from_instance(obj: &Self::Type) -> &Self

Returns the implementation from an instance.

fn instance_data<U>(&self, type_: Type) -> Option<&U> where
    U: 'static + Any + Send + Sync, 

Returns a pointer to the instance implementation specific data.

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

Implementors

impl<T> ObjectSubclassExt for T where
    T: ObjectSubclass,