#[derive(Serialize, Deserialize, Debug, Eq, PartialEq, Default)]

fn main() {

    // Pot's main space saving feature is being able to reuse previously encoded

    // fields. Pot also supports persisting "symbol maps" in many powerful ways.

    // This example shows how to compute a symbol map that can be pre-shared to

    // keep payloads smaller.

    let mut preshared_map = pot::ser::SymbolMap::new();

    // Load the symbols from an instance of `User`.

    preshared_map.populate_from(&User::default()).unwrap();

    println!("Preshared symbols: {preshared_map:?}");

    let original_user = User {

        id: 42,

        name: String::from("ecton"),

    };

    let encoded_without_map = pot::to_vec(&original_user).unwrap();

    let encoded_with_map = preshared_map.serialize_to_vec(&original_user).unwrap();

    println!(

        "Default User encoded without map: {} bytes",

        encoded_without_map.len()

    );

    println!(

        "Default User encoded with map:    {} bytes",

        encoded_with_map.len()

    );

    assert!(encoded_with_map.len() < encoded_without_map.len());

    let preshared_map_bytes = pot::to_vec(&preshared_map).unwrap();

    // Deserialize the symbol map.

    let mut deserializer_map: pot::de::SymbolMap = pot::from_slice(&preshared_map_bytes).unwrap();

    // Deserialize the payload using the map.

    let user: User = deserializer_map

        .deserialize_slice(&encoded_with_map)

        .unwrap();

    assert_eq!(user, original_user);

}

fn runs() {

    main();

}