#parser #json-parser #json

no-std tiny-json-rs

tiny-json-rs is a simple and lightweight JSON parser for Rust

3 releases

0.2.5 Nov 29, 2023
0.2.4 Nov 29, 2023
0.1.0 Nov 27, 2023

#1496 in Encoding

40 downloads per month

MIT license

34KB
996 lines

tiny-json-rs

A minimalistic Rust library for encoding and decoding JSON, offering a lower memory footprint alternative to serde.

Introduction

tiny-json-rs is an open-source library designed for efficiently handling JSON in Rust applications. It aims to provide functionality similar to the serde library but focuses on reducing memory usage, making it an ideal choice for resource-constrained environments or applications where performance is critical.

Features

  • Efficient JSON Encoding/Decoding: Optimized for lower memory usage.
  • Easy Integration: Simple API, compatible with standard Rust structs.
  • Customizable: Extendable to support various data types.

Usage

Add tiny-json-rs to your Cargo.toml:

[dependencies]
tiny-json-rs = "0.2.5"

Basic Examples

Struct Definition

Define your structs and derive Deserialize and Serialize:

use tiny_json_rs::{Deserialize, Serialize};

#[derive(Debug, PartialEq, Deserialize, Serialize)]
pub struct A {
    pub a: i32,
    pub b: String,
}

#[derive(Debug, PartialEq, Deserialize, Serialize)]
pub struct B {
    pub a: i32,
    pub b: Vec<String>,
}

Can also derive custom names

#[derive(Debug, PartialEq, Deserialize, Serialize)]
pub struct C {
    #[Rename = "CustomName"]
    pub a: i32,
    pub b: String,
}

Deserializing JSON

Convert a JSON string to a Rust struct:

let json = r#"{"a": 1, "b": "Hello"}"#;
let parsed: A = tiny_json_rs::decode(json.to_string()).unwrap();
assert_eq!(parsed.a, 1);
assert_eq!(parsed.b, "Hello");

Serializing to JSON

Convert a Rust struct to a JSON string:

let obj = C {
    a: 1,
    b: "Hello".to_string(),
};

let json = tiny_json_rs::encode(obj);
assert_eq!(json, r#"{"CustomName":1,"b":"Hello"}"#);

Testing

tiny-json-rs comes with a suite of tests to ensure functionality:

#[test]
fn test_deserialize() {
    // ...
}

#[test]
fn test_deserialize_vec() {
    // ...
}

#[test]
fn test_encode_json() {
    // ...
}

License

tiny-json-rs is licensed under MIT.

Issues?

This is an experimental project, not production ready yet. If you find any issues, please report them here

Dependencies

~1.5MB
~37K SLoC