Macro crate_def_with_ty 

macro_rules! crate_def_with_ty {
    () => { ... };
    (
        $(#[$attr:meta])*
        $vis:vis $name:ident;
        $($rest:tt)*
    ) => { ... };
    (
        $(#[$attr:meta])*
        $vis:vis $name:ident {
            $(
                $(#[$f_attr:meta])*
                $f_vis:vis $f_name:ident: $f_ty:ty,
            )*
        }
        $($rest:tt)*
    ) => { ... };
}