enum_primitives.rs

macro_rules! enum_to_primitive {
    ($name:ident) => {
        impl ToPrimitive for $name {
            fn to_i64(&self) -> Option<i64> {
                return Some(*self as i64);
            }

            fn to_u64(&self) -> Option<u64> {
                return Some(*self as u64);
            }
        }
    }
}

macro_rules! enum_primitive {
    (
        $(#[$mt:meta])*
        pub enum $name:ident {
            $($field:tt)*
        }
    ) =>
    {
        enum_from_primitive! {
            $(#[$mt])*
            #[derive(Debug,Clone,Copy)]
            pub enum $name {
                $($field)*
            }
        }
        enum_to_primitive!($name);
    }
}