macro_rules! cfg_codec { ($($item:item)*) => { $( #[cfg(feature = "codec")] #[cfg_attr(docsrs, doc(cfg(feature = "codec")))] $item )* } } macro_rules! cfg_compat { ($($item:item)*) => { $( #[cfg(feature = "compat")] #[cfg_attr(docsrs, doc(cfg(feature = "compat")))] $item )* } } macro_rules! cfg_udp { ($($item:item)*) => { $( #[cfg(all(feature = "udp", feature = "codec"))] #[cfg_attr(docsrs, doc(cfg(all(feature = "udp", feature = "codec"))))] $item )* } }