Macro tea_codec::Handle

macro_rules! Handle {
    [] => { ... };
    [$t0:ty] => { ... };
    [$t0:ty; $other:ty] => { ... };
    [$t0:ty, $($tn:ty),*] => { ... };
    [$t0:ty, $($tn:ty),*; $other:ty] => { ... };
}