1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

use std::io::Error;
use bytes::BytesMut;
use super::framed::Fuse;
use super::framed_write::FramedWrite2;

/// Decoding of frames via buffers, for use with `FramedRead`.
pub trait Decoder {
    /// The type of items returned by `decode`
    type Item;
    /// The type of decoding errors.
    type Error: From<Error>;

    /// Decode an item from the src `BytesMut` into an item
    fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error>;
}

impl<T, U: Decoder> Decoder for Fuse<T, U> {
    type Item = U::Item;
    type Error = U::Error;

    fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
        self.1.decode(src)
    }
}

impl<T: Decoder> Decoder for FramedWrite2<T> {
    type Item = T::Item;
    type Error = T::Error;

    fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
        self.inner.decode(src)
    }
}