$ criterion_

Crate

Name: criterion New version: 0.8.0 Release date: 2025-11-30T00:12:50.151532Z

Crate readme

Short description JSON5 is a superset of JSON with an expanded syntax aimed at easier manual writing and maintenance.

Long description JSON5 allows comments, trailing commas, object keys without quotes, single quoted strings, hexadecimal numbers, and multi-line strings. The crate provides functions for deserializing JSON5 text into Rust datatypes and for serializing Rust datatypes as JSON5 text, utilizing the Serde framework.

Features • Deserialization and serialization of JSON5 via Serde • Supports comments and trailing commas • Allows object keys without quotes • Supports single quoted strings and hexadecimal numbers • Compatibility with Serde's data model for byte arrays

Code Examples Deserialization example

 use serde_derive::Deserialize;

#[derive(Debug, PartialEq, Deserialize)]
struct Config<'a> {
    foo: u32,
    bar: &'a str,
}

let config: Config = json5::from_str("\n  {\n    // Note unquoted keys, comments, and trailing commas.\n    foo: 42,\n    bar: 'baz',\n  }\n")?;

assert_eq!(config, Config{ foo: 42, bar: "baz" });

Serialization example

 use serde_derive::Serialize;

#[derive(Serialize)]
struct Config<'a> {
    foo: u32,
    bar: &'a str,
}

let config = Config {
    foo: 42,
    bar: "baz",
};

assert_eq!(&json5::to_string(&config)?, "{\n  foo: 42,\n  bar: \"baz\",\n}");

Byte array example

 use serde_bytes::{Bytes, ByteBuf};

let s = json5::to_string(&Bytes::new(b"JSON5"))?;
assert_eq!(&s, "\"4a534f4e35\"");
assert_eq!(json5::from_str::<ByteBuf>(&s)?, ByteBuf::from("JSON5"));

Links • https://crates.io/crates/json5 • https://docs.rs/json5

https://api.github.com/repos/criterion-rs/criterion.rs/releases/266168816

Release info

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Release description

Code Examples