Struct bytecodec::combinator::MapFrom

pub struct MapFrom<E, T, F> { /* fields omitted */ }

Combinator for converting items into ones that suited to the inner encoder by calling the given function.

This is created by calling EncodeExt::map_from method.

Methods

impl<E, T, F> MapFrom<E, T, F>

pub fn inner_ref(&self) -> &E

Returns a reference to the inner encoder.

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

Returns a mutable reference to the inner encoder.

pub fn into_inner(self) -> E

Takes ownership of this instance and returns the inner encoder.

Trait Implementations

impl<E, T, F> Encode for MapFrom<E, T, F> where
    E: Encode,
    F: Fn(T) -> E::Item, 

type Item = T

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<E, T, F> SizedEncode for MapFrom<E, T, F> where
    E: SizedEncode,
    F: Fn(T) -> E::Item, 

fn exact_requiring_bytes(&self) -> u64

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

impl<E: Debug, T: Debug, F: Debug> Debug for MapFrom<E, T, F>

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

Formats the value using the given formatter.