Struct bytecodec::combinator::TryMapFrom

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

Combinator that tries to convert items into ones that suited to the inner encoder by calling the given function.

This is created by calling EncodeExt::try_map_from method.

Trait Implementations

impl<C: Debug, T: Debug, E: Debug, F: Debug> Debug for TryMapFrom<C, T, E, F>

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

Formats the value using the given formatter.

impl<C, T, E, F> Encode for TryMapFrom<C, T, E, F> where
    C: Encode,
    F: Fn(T) -> Result<C::Item, E>,
    Error: From<E>, 

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<C, T, E, F> ExactBytesEncode for TryMapFrom<C, T, E, F> where
    C: ExactBytesEncode,
    F: Fn(T) -> Result<C::Item, 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.