mre.rs

use enum_dispatch::enum_dispatch;

#[enum_dispatch]
pub trait Acceptor {
    fn accept(&self) {}
}

macro_rules! define_node {
    (
        $node:ident;
        $(
            $category:ident { $($variant:ident),* }
        )*
    ) => {
        pub enum $node { $($category($category)),* }
        $(
            #[enum_dispatch(Acceptor)]
            pub enum $category { $($variant($variant)),* }
        )*
    }
}

define_node! {
    NodeEnum;
    Branch { Redirection }
}

pub struct Redirection {}
impl Acceptor for Redirection {}