#decoder #low-latency #parser #schema #json

macro sje_derive

Fast JSON deserialisation and serialisation schema based framework

6 releases

new 0.0.6 Apr 25, 2025
0.0.5 Apr 23, 2025

#40 in #low-latency

Download history 403/week @ 2025-04-18

403 downloads per month
Used in sje

MIT license

26KB
505 lines

Build Status Crates.io Documentation License: MIT

sje

Fast JSON deserialisation and serialisation schema based framework.

Example

Make sure the derive feature is enabled.

sje = { version = "0.0.4", features = ["derive"]}
#[derive(Decoder)]
#[sje(object)]
pub struct Trade {
    #[sje(rename = "e", len = 5)]
    event_type: String,
    #[sje(rename = "E", len = 13)]
    event_time: u64,
    #[sje(rename = "s")]
    symbol: String,
    #[sje(rename = "t", len = 10)]
    trade_id: u64,
    #[sje(rename = "p")]
    price: String,
    #[sje(rename = "q")]
    quantity: String,
    #[sje(rename = "b", len = 11)]
    buyer_order_id: u64,
    #[sje(rename = "a", len = 11)]
    seller_order_id: u64,
    #[sje(rename = "T", len = 13)]
    transaction_time: u64,
    #[sje(rename = "m")]
    is_buyer_maker: bool,
}

let trade = TradeDecoder::decode(br#"{"e":"trade","E":1705085312569,"s":"BTCUSDT","t":3370034463,"p":"43520.00000000","q":"0.00022000","b":24269765071,"a":24269767699,"T":1705085312568,"m":true,"M":true}"#).unwrap();
assert_eq!("trade", trade.event_type_as_str());
assert_eq!(1705085312569, trade.event_time());

Dependencies

~230–670KB
~16K SLoC