Struct bytecodec::StartEncoderChain

pub struct StartEncoderChain;

An object for starting a chain of encoders.

Examples

use bytecodec::{Encode, EncodeBuf, EncodeExt, StartEncoderChain};
use bytecodec::bytes::Utf8Encoder;
use bytecodec::fixnum::U8Encoder;

let mut output = [0; 4];
let mut encoder = StartEncoderChain
    .chain(U8Encoder::new())
    .chain(Utf8Encoder::new())
    .map_from(|s: String| (s.len() as u8, s));
{
    encoder.start_encoding("foo".to_owned()).unwrap();
    encoder.encode(&mut EncodeBuf::new(&mut output)).unwrap();
}
assert_eq!(output.as_ref(), b"\x03foo");

Methods

impl StartEncoderChain

pub fn chain<E: Encode>(&self, encoder: E) -> EncoderChain<Self, E, ()>

Starts encoders chain.

Trait Implementations

impl Debug for StartEncoderChain

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

Formats the value using the given formatter.

impl Encode for StartEncoderChain

type Item = ()

The type of items to be encoded.

fn encode(&mut self, _buf: &mut EncodeBuf) -> Result<()>

Encodes the current item and writes the encoded bytes to the given buffer as many as possible.

fn start_encoding(&mut self, _item: Self::Item) -> Result<()>

Tries to start encoding the given item.

fn is_idle(&self) -> bool

Returns true if there are no items to be encoded in the encoder, otherwise false.

fn requiring_bytes_hint(&self) -> Option<u64>

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

impl ExactBytesEncode for StartEncoderChain

fn requiring_bytes(&self) -> u64

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