Trait Subclass 

pub unsafe trait Subclass<T: Superclass> {
    // Required method
    fn vmt_rva() -> Rva;

    // Provided methods
    fn vmt_va() -> Va { ... }
    fn superclass(&self) -> &T { ... }
    fn superclass_mut(&mut self) -> &mut T { ... }
}

A trait for C++ subclasses of the superclass T. Implementing this trait makes it possible for Rust code to be generic over all subclasses of a given C++ supertype.

Safety

In order to implement this for a struct, you must guarantee:

• The struct uses C-style layout.
• An initial subsequence of the struct is a valid instance of T.

Required Methods

fn vmt_rva() -> Rva

The RVA of this class’s virtual method table.

Provided Methods

fn vmt_va() -> Va

The VA of this class’s virtual method table.

fn superclass(&self) -> &T

Returns this as a T.

fn superclass_mut(&mut self) -> &mut T

Returns this as a mutable T.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<T> Subclass<T> for T

where T: Superclass,