dtolnay/serde-repr

Serialize and deserialize C-like enum as underlying repr

Rust

271

162 commits

updated Aug 3, 2026

See the code

README

Serde repr derive

github crates.io docs.rs build status

This crate provides a derive macro to derive Serde's Serialize and Deserialize traits in a way that delegates to the underlying repr of a C-like enum.

[dependencies]
serde = "1.0"
serde_repr = "0.1"
use serde_repr::{Serialize_repr, Deserialize_repr};

#[derive(Serialize_repr, Deserialize_repr, PartialEq, Debug)]
#[repr(u8)]
enum SmallPrime {
    Two = 2,
    Three = 3,
    Five = 5,
    Seven = 7,
}

fn main() -> serde_json::Result<()> {
    let j = serde_json::to_string(&SmallPrime::Seven)?;
    assert_eq!(j, "7");

    let p: SmallPrime = serde_json::from_str("2")?;
    assert_eq!(p, SmallPrime::Two);

    Ok(())
}

License

Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

dtolnay/serde-repr

Serialize and deserialize C-like enum as underlying repr

Rust

271

162 commits

updated Aug 3, 2026

See the code

README

Serde repr derive

github crates.io docs.rs build status

This crate provides a derive macro to derive Serde's Serialize and Deserialize traits in a way that delegates to the underlying repr of a C-like enum.

[dependencies]
serde = "1.0"
serde_repr = "0.1"
use serde_repr::{Serialize_repr, Deserialize_repr};

#[derive(Serialize_repr, Deserialize_repr, PartialEq, Debug)]
#[repr(u8)]
enum SmallPrime {
    Two = 2,
    Three = 3,
    Five = 5,
    Seven = 7,
}

fn main() -> serde_json::Result<()> {
    let j = serde_json::to_string(&SmallPrime::Seven)?;
    assert_eq!(j, "7");

    let p: SmallPrime = serde_json::from_str("2")?;
    assert_eq!(p, SmallPrime::Two);

    Ok(())
}

License

Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Significant stargazers

Alex Chi Z

8,410 followers · starred Dec 2022

zuisong

32 followers · starred Apr 2024

Rahul Butani

95 followers · starred Aug 2026

Tau Gärtli

107 followers · starred Jun 2025