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use crate::{Bytes, BytesMut}; use core::fmt::{Formatter, LowerHex, Result, UpperHex}; struct BytesRef<'a>(&'a [u8]); impl<'a> LowerHex for BytesRef<'a> { fn fmt(&self, f: &mut Formatter<'_>) -> Result { for b in self.0 { write!(f, "{:02x}", b)?; } Ok(()) } } impl<'a> UpperHex for BytesRef<'a> { fn fmt(&self, f: &mut Formatter<'_>) -> Result { for b in self.0 { write!(f, "{:02X}", b)?; } Ok(()) } } macro_rules! hex_impl { ($tr:ident, $ty:ty) => { impl $tr for $ty { fn fmt(&self, f: &mut Formatter<'_>) -> Result { $tr::fmt(&BytesRef(self.as_ref()), f) } } }; } hex_impl!(LowerHex, Bytes); hex_impl!(LowerHex, BytesMut); hex_impl!(UpperHex, Bytes); hex_impl!(UpperHex, BytesMut);