query-interface - dynamically query a type-erased object for any trait implementation
#[macro_use]
extern crate query_interface;
use query_interface::{Object, ObjectClone};
use std::fmt::Debug;
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
struct Foo;
interfaces!(Foo: ObjectClone, Debug, Bar);
trait Bar {
fn do_something(&self);
}
impl Bar for Foo {
fn do_something(&self) {
println!("I'm a Foo!");
}
}
fn main() {
let obj = Box::new(Foo) as Box<Object>;
let obj2 = obj.clone();
println!("{:?}", obj2);
obj2.query_ref::<Bar>().unwrap().do_something();
}