Struct bytecodec::combinator::MapErr

pub struct MapErr<C, F, E> { /* fields omitted */ }

Combinator for modifying encoding/decoding errors.

This is created by calling {DecodeExt, EncodeExt}::map_err method.

Trait Implementations

impl<C: Debug, F: Debug, E: Debug> Debug for MapErr<C, F, E>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<D, F, E> Decode for MapErr<D, F, E> where
    D: Decode,
    F: Fn(Error) -> E,
    Error: From<E>, 

type Item = D::Item

The type of items to be decoded.

fn decode(
    &mut self,
    buf: &[u8],
    eos: Eos
) -> Result<(usize, Option<Self::Item>)>

Consumes the given buffer (a part of a byte sequence), and decodes an item from it.

fn requiring_bytes(&self) -> ByteCount

Returns the lower bound of the number of bytes needed to decode the next item.

impl<C, F, E> Encode for MapErr<C, F, E> where
    C: Encode,
    F: Fn(Error) -> E,
    Error: From<E>, 

type Item = C::Item

The type of items to be encoded.

fn encode(&mut self, buf: &mut [u8], eos: Eos) -> Result<usize>

Encodes the items in the encoder and writes the encoded bytes to the given buffer.

fn start_encoding(&mut self, item: Self::Item) -> Result<()>

Tries to start encoding the given item.

fn requiring_bytes(&self) -> ByteCount

Returns the number of bytes required to encode all the items in the encoder.

fn is_idle(&self) -> bool

Returns true if there are no items to be encoded in the encoder, otherwise false.

impl<C, F, E> ExactBytesEncode for MapErr<C, F, E> where
    C: ExactBytesEncode,
    F: Fn(Error) -> E,
    Error: From<E>, 

fn exact_requiring_bytes(&self) -> u64

Returns the exact number of bytes required to encode all the items remaining in the encoder.