u/Jonrrrs

I made a simple helper tool years ago, but now i restructured it and put it on crates.io for anyone to use.

JsonOnTheFly lets you derive a macro on any struct you tinker with and gives it methods for writing to a file as a json and reading that file again. Just call write() and load() on it. This way, prototyping in rust becomes even faster, simpler and less boilerplaty.

How you do it:

use json_on_the_fly::JsonOnTheFly;
use serde::{Deserialize, Serialize};

#[derive(JsonOnTheFly, Serialize, Deserialize, Default, Clone, Debug)]
struct Color {
    red: u8,
    green: u8,
    blue: u8,
}

fn main() {
    let color = Color {
        red: 0,
        green: 0,
        blue: 255,
    };

    color.write().unwrap(); // Writing the file does not require any more boilerplate.

    Color::backup_db_file().unwrap(); // Create a backup of the file associated with the struct

    let new_color = Color::load().unwrap(); // Initialize the struct from the .json file. The errors provided give more information about whether it was created beforehand.

    println!("{:?}", new_color);
}

Repo: https://github.com/JonasFocke01/json_on_the_fly
Crate: https://crates.io/crates/json-on-the-fly