xdc

This crate contains the casting logic for the wider xdc ecosystem. It is intended to be used in conjunction with xdc_macros in order to allow for allowing dynamic casting

lib.rs:

eXperimental Dynamic Casting for Rust

Example

use xdc::*;
trait Parent : ObjBase {}
trait Foo : Parent {}
trait Bar : Parent {}

struct Test {}
xdc_struct!(Test);

impl Parent for Test {}
xdc_impl!(Parent, Test);

impl Foo for Test {}
xdc_impl!(Foo, Test);

impl Bar for Test {}
xdc_impl!(Bar, Test);

let mut example = Test {};

let foo_example: &dyn Foo = &example;
let bar_example: &dyn Bar = xdc::try_cast(foo_example).unwrap();

let foo_example_mut: &mut dyn Foo = &mut example;
let bar_example_mut: &mut dyn Bar = xdc::try_cast_mut(foo_example_mut).unwrap();

let foo_example_box: Box<dyn Foo> = Box::new(example);
let bar_example_box: Box<dyn Bar> = xdc::try_cast_boxed(foo_example_box).unwrap();