Trait packable::unpacker::Unpacker

pub trait Unpacker: Sized {
    type Error;

    // Required method
    fn unpack_bytes<B: AsMut<[u8]>>(
        &mut self,
        bytes: B
    ) -> Result<(), Self::Error>;

    // Provided methods
    fn ensure_bytes(&self, _len: usize) -> Result<(), Self::Error> { ... }
    fn read_bytes(&self) -> Option<usize> { ... }
}

A type that can unpack any value that implements Packable.

Required Associated Types

type Error

An error type representing any error related to reading bytes.

Required Methods

fn unpack_bytes<B: AsMut<[u8]>>(&mut self, bytes: B) -> Result<(), Self::Error>

Reads a sequence of bytes from the Unpacker. This sequence must be long enough to fill bytes completely. This method must fail if the unpacker does not have enough bytes to fulfill the request.

Provided Methods

fn ensure_bytes(&self, _len: usize) -> Result<(), Self::Error>

Tries to guarantee that the Unpacker has at least len bytes.

This method must fail if and only if it is certain that there are not enough bytes and it is allowed to return Ok(()) in any other case.

fn read_bytes(&self) -> Option<usize>

Returns the exact number of read bytes if possible.

Implementations on Foreign Types

impl<U: Unpacker + ?Sized> Unpacker for &mut U

type Error = <U as Unpacker>::Error

fn unpack_bytes<B: AsMut<[u8]>>(&mut self, bytes: B) -> Result<(), Self::Error>

fn ensure_bytes(&self, len: usize) -> Result<(), Self::Error>

fn read_bytes(&self) -> Option<usize>

Implementors

impl<'u> Unpacker for SliceUnpacker<'u>

type Error = UnexpectedEOF

impl<U: Unpacker> Unpacker for CounterUnpacker<U>

type Error = <U as Unpacker>::Error