rcbytes 1.2.2

Rc version bytes crate
Documentation 
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// The code in this file is heavily based on [Carl Lerche's LRU implementation](https://github.com/tokio-rs/bytes).
//
// MIT License
//
// Copyright (c) 2022 Al Liu (https://github.com/al8n/rcbytes)
//
// Copyright (c) 2018 Carl Lerche (https://github.com/tokio-rs/bytes)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
use core::fmt::{Formatter, LowerHex, Result, UpperHex};

use super::BytesRef;
use crate::{Bytes, BytesMut};

impl LowerHex for BytesRef<'_> {
    fn fmt(&self, f: &mut Formatter<'_>) -> Result {
        for &b in self.0 {
            write!(f, "{:02x}", b)?;
        }
        Ok(())
    }
}

impl UpperHex for BytesRef<'_> {
    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);