#[macro_use] extern crate serde_json;
#[macro_use] extern crate serde_derive;

#[derive(Serialize,Deserialize,Debug,Clone)]
struct Node {
    #[serde(skip_serializing_if = "Option::is_none")]
    name: Option<String>,
    #[serde(skip_serializing_if = "Option::is_none")]
    description: Option<String>,
    #[serde(skip_serializing_if = "Vec::is_empty")]
    children: Vec<Node>,
}

fn main() {
    let source = include_str!("categories.json");

    let parsed : Node = serde_json::from_str(source).expect("parse");

    println!("{}", serde_json::to_string_pretty(&parsed).expect("serialize"));
}