Struct TryMap

pub struct TryMap<D, T, E, F> { /* private fields */ }

Combinator which tries to convert decoded values by calling the specified function.

This is created by calling DecodeExt::try_map method.

Implementations

impl<D, T, E, F> TryMap<D, T, E, F>

pub fn inner_ref(&self) -> &D

Returns a reference to the inner decoder.

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

Returns a mutable reference to the inner decoder.

pub fn into_inner(self) -> D

Takes ownership of this instance and returns the inner decoder.

Trait Implementations

impl<D: Debug, T: Debug, E: Debug, F: Debug> Debug for TryMap<D, T, E, F>

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

Formats the value using the given formatter.

impl<D, T, E, F> Decode for TryMap<D, T, E, F>

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

type Item = T

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.