Struct bytecodec::json_codec::JsonDecoder

pub struct JsonDecoder<T>(_)
 where
    T: for<'de> Deserialize<'de>;

JSON decoder.

Note that this decodes items monolithically so very large items may impair real-time property of the system.

Examples

use bytecodec::{Decode, Eos};
use bytecodec::json_codec::JsonDecoder;
use serde_json::Value;

let mut decoder = JsonDecoder::<Value>::new();

decoder.decode(b"[1, 2", Eos::new(false)).unwrap();
decoder.decode(b", 3]", Eos::new(true)).unwrap();
let json = decoder.finish_decoding().unwrap();

assert_eq!(json.to_string(), "[1,2,3]");

Methods

impl<T> JsonDecoder<T> where
    T: for<'de> Deserialize<'de>, 

pub fn new() -> Self

Makes a new JsonDecoder instance.

Trait Implementations

impl<T: Debug> Debug for JsonDecoder<T> where
    T: for<'de> Deserialize<'de>, 

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

Formats the value using the given formatter.

impl<T> Decode for JsonDecoder<T> where
    T: for<'de> Deserialize<'de>, 

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.

impl<T> Default for JsonDecoder<T> where
    T: for<'de> Deserialize<'de>, 

fn default() -> Self

Returns the "default value" for a type.