JSON parser

JSON parser written in Rust. This is a toy project to implement a basic JSON parser without external dependencies.

This can be used as a library to parse JSON. If you have a JSON string, you can parse it by:

let input = "... JSON string ...";

match Json::from_str(input) {
    Ok(json) => ...,
    Err(errs) => ...,
}

Json::from_str(...) returns Result<Json, Vec<Error>>. Once it parsed the string into Json successfully, you can use Json inside Result.

Json is an enum represent JSON.

pub enum Json {
    Null,
    Bool(bool),
    Num(f64),
    Str(String),
    Obj(Vec<(String, Json)>),
    Arr(Vec<Json>),
}

This also includes a CLI that parse JSON from stdin and print out. For example, the command below will print the syntax highlighed JSON to console.

cargo run < tests/inputs/list-lambda.json