Macro ruwren::create_class_objects

macro_rules! create_class_objects {
    ($(
        class $name:ty => $md:ident {
            $(
                static($sgns:expr) $sf:ident 
            ),*
            $(
                instance($sgni:expr) $inf:ident
            ),*
        }
    )+) => { ... };
    (@fn static $name:ty => $s:ident) => { ... };
    (@fn instance $name:ty => $inf:ident) => { ... };
}