byte_lamination 0.1.2

Type-readable byte transformation wrappers, with CBOR and BARE serialisation and Zstd compression.
Documentation 
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use crate::ByteLamination;
use std::borrow::Cow;
use std::error::Error;

impl<'a> ByteLamination<'a> for Cow<'a, [u8]> {
    fn as_cow_bytes(&self) -> Cow<'_, [u8]> {
        Cow::Borrowed(self.as_ref())
    }

    fn into_bytes(self) -> Vec<u8> {
        self.into_owned()
    }

    fn try_from_bytes(bytes: Cow<'a, [u8]>) -> Result<Self, Box<dyn Error>> {
        Ok(bytes)
    }
}

impl<'a> ByteLamination<'a> for Vec<u8> {
    fn as_cow_bytes(&self) -> Cow<'_, [u8]> {
        Cow::Borrowed(self.as_ref())
    }

    fn into_bytes(self) -> Vec<u8> {
        self
    }

    fn try_from_bytes(bytes: Cow<'a, [u8]>) -> Result<Self, Box<dyn Error>> {
        Ok(bytes.into_owned())
    }
}

impl<'a> ByteLamination<'a> for String {
    fn as_cow_bytes(&self) -> Cow<'_, [u8]> {
        Cow::Borrowed(self.as_bytes())
    }

    fn into_bytes(self) -> Vec<u8> {
        self.into_bytes()
    }

    fn try_from_bytes(bytes: Cow<'a, [u8]>) -> Result<Self, Box<dyn Error>> {
        Ok(match bytes {
            Cow::Borrowed(bslice) => std::str::from_utf8(bslice)?.to_owned(),
            Cow::Owned(bvec) => String::from_utf8(bvec)?,
        })
    }
}

impl<'a> ByteLamination<'a> for Cow<'a, str> {
    fn as_cow_bytes(&self) -> Cow<'_, [u8]> {
        Cow::Borrowed(self.as_bytes())
    }

    fn into_bytes(self) -> Vec<u8> {
        self.into_owned().into_bytes()
    }

    fn try_from_bytes(bytes: Cow<'a, [u8]>) -> Result<Self, Box<dyn Error>> {
        Ok(match bytes {
            Cow::Borrowed(bslice) => Cow::Borrowed(std::str::from_utf8(bslice)?),
            Cow::Owned(bvec) => Cow::Owned(String::from_utf8(bvec)?),
        })
    }
}