Trait Decoder 

pub trait Decoder {
    type Item;
    type Error: From<Error>;

    // Required method
    fn decode(
        &mut self,
        src: &mut BytesMut,
    ) -> Result<Option<Self::Item>, Self::Error>;

    // Provided method
    fn decode_eof(
        &mut self,
        src: &mut BytesMut,
    ) -> Result<Option<Self::Item>, Self::Error> { ... }
}

Decoding of frames via buffers, for use with FramedRead.

Required Associated Types

type Item

The type of items returned by decode

type Error: From<Error>

The type of decoding errors.

Required Methods

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

Decode an item from the src BytesMut into an item

Provided Methods

fn decode_eof( &mut self, src: &mut BytesMut, ) -> Result<Option<Self::Item>, Self::Error>

Called when the input stream reaches EOF, signaling a last attempt to decode

Notes

The default implementation of this method invokes the Decoder::decode method.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl Decoder for BytesCodec

type Item = Bytes

type Error = Error

impl Decoder for LengthCodec

type Item = Bytes

type Error = Error

impl Decoder for LinesCodec

type Item = String

type Error = Error

impl<Enc, Dec> Decoder for CborCodec<Enc, Dec>

where for<'de> Dec: Deserialize<'de> + 'static, for<'de> Enc: Serialize + 'static,

Decoder impl parses cbor objects from bytes

type Item = Dec

type Error = CborCodecError

impl<Enc, Dec> Decoder for JsonCodec<Enc, Dec>

where for<'de> Dec: Deserialize<'de> + 'static, for<'de> Enc: Serialize + 'static,

Decoder impl parses json objects from bytes

type Item = Dec

type Error = JsonCodecError