Macro mpeg2ts_reader::descriptor_enum

macro_rules! descriptor_enum {
    (
        $(#[$outer:meta])*
        $name:ident {
            $(
                $(#[$inner:ident $($args:tt)*])*
                $case_name:ident $($tags:pat)|* => $t:ident
            ),*,
        }
    ) => { ... };
}