Struct MapErr

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

Combinator for modifying encoding/decoding errors.

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

Implementations

impl<C, E, F> MapErr<C, E, F>

pub fn inner_ref(&self) -> &C

Returns a reference to the inner encoder or decoder.

pub fn inner_mut(&mut self) -> &mut C

Returns a mutable reference to the inner encoder or decoder.

pub fn into_inner(self) -> C

Takes ownership of this instance and returns the inner encoder or decoder.

Trait Implementations

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

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<D, E, F> Decode for MapErr<D, E, F>

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

type Item = <D as Decode>::Item

The type of items to be decoded.

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

Consumes the given buffer (a part of a byte sequence), and proceeds the decoding process.

fn finish_decoding(&mut self) -> Result<Self::Item>

Finishes the current decoding process and returns the decoded item.

fn requiring_bytes(&self) -> ByteCount

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

fn is_idle(&self) -> bool

Returns true if there are no items to be decoded by the decoder at the next invocation of decode method, otherwise false.

impl<C, E, F> Encode for MapErr<C, E, F>

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

type Item = <C as Encode>::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, E, F> SizedEncode for MapErr<C, E, F>

where C: SizedEncode, 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.