#json5 #parse #parser #serde #json

json5

A Rust JSON5 serializer and deserializer which speaks Serde

15 releases

0.4.1 Sep 21, 2021
0.3.0 Nov 24, 2020
0.2.8 Jun 30, 2020
0.2.6 Mar 30, 2020
0.1.0 Jul 30, 2018

#29 in Encoding

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24,838 downloads per month
Used in 27 crates (17 directly)

ISC license

40KB
975 lines

JSON5

crates.io docs.rs

A Rust JSON5 serializer and deserializer which speaks Serde.

API

Deserialize a JSON5 string with from_str. Go the other way with to_string. The serializer is very basic at the moment, it just produces plain old JSON. See the Serde documentation for details on implementing Serialize and Deserialize. (Usually it's just a case of sprinkling in some derives.)

The Serde data model is mostly supported, with the exception of bytes and borrowed strings.

Example

Read some config into a struct.

use json5;
use serde_derive::Deserialize;

#[derive(Deserialize, Debug, PartialEq)]
struct Config {
    message: String,
    n: i32,
}

fn main() {
    let config = "
        {
          // A traditional message.
          message: 'hello world',

          // A number for some reason.
          n: 42,
        }
    ";

    assert_eq!(
        json5::from_str(config),
        Ok(Config {
            message: "hello world".to_string(),
            n: 42,
        }),
    );
}

Dependencies

~1.4–2MB
~46K SLoC