pathlink 0.5.0

A URL type whose path can also be used as a filesystem path, for Rust
Documentation 
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use std::str::FromStr;

use destream::{de, en};

use super::{Host, Link, PathBuf};

impl de::FromStream for Host {
    type Context = ();

    async fn from_stream<D: de::Decoder>(cxt: (), decoder: &mut D) -> Result<Self, D::Error> {
        let s = String::from_stream(cxt, decoder).await?;
        Self::from_str(&s).map_err(de::Error::custom)
    }
}

impl<'en> en::ToStream<'en> for Host {
    fn to_stream<E: en::Encoder<'en>>(&'en self, e: E) -> Result<E::Ok, E::Error> {
        e.encode_str(self.to_string().as_str())
    }
}

impl<'en> en::IntoStream<'en> for Host {
    fn into_stream<E: en::Encoder<'en>>(self, e: E) -> Result<E::Ok, E::Error> {
        e.encode_str(self.to_string().as_str())
    }
}

impl de::FromStream for Link {
    type Context = ();

    async fn from_stream<D: de::Decoder>(cxt: (), decoder: &mut D) -> Result<Link, D::Error> {
        let s = String::from_stream(cxt, decoder).await?;
        s.parse().map_err(de::Error::custom)
    }
}

impl<'en> en::ToStream<'en> for Link {
    fn to_stream<E: en::Encoder<'en>>(&'en self, e: E) -> Result<E::Ok, E::Error> {
        en::IntoStream::into_stream(self.to_string(), e)
    }
}

impl<'en> en::IntoStream<'en> for Link {
    fn into_stream<E: en::Encoder<'en>>(self, e: E) -> Result<E::Ok, E::Error> {
        en::IntoStream::into_stream(self.to_string(), e)
    }
}

impl de::FromStream for PathBuf {
    type Context = ();

    async fn from_stream<D: de::Decoder>(
        context: (),
        decoder: &mut D,
    ) -> Result<PathBuf, D::Error> {
        let s = String::from_stream(context, decoder).await?;
        s.parse().map_err(de::Error::custom)
    }
}

impl<'en> en::IntoStream<'en> for PathBuf {
    fn into_stream<E: en::Encoder<'en>>(self, e: E) -> Result<E::Ok, E::Error> {
        e.encode_str(&self.to_string())
    }
}

impl<'en> en::ToStream<'en> for PathBuf {
    fn to_stream<E: en::Encoder<'en>>(&'en self, e: E) -> Result<E::Ok, E::Error> {
        e.encode_str(&self.to_string())
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    fn assert_destream<T>()
    where
        T: de::FromStream<Context = ()>,
        for<'en> T: en::ToStream<'en> + en::IntoStream<'en>,
    {
    }

    #[test]
    fn host_link_pathbuf_have_destream_impls() {
        assert_destream::<Host>();
        assert_destream::<Link>();
        assert_destream::<PathBuf>();
    }
}