Lib.rs

tagged-serde

This crate has a procedural macro for generating serde implementations for enums (a.k.a. tagged unions) with integer tags. In the absence of thorough documentation, the main idea is that

#[derive(TaggedSerde)]
enum MyEnum {
  #[tagged_serde = 1]
  Str(String),
  #[tagged_serde = 42]
  Int(i32),
}

will define serde::Serialize and serde::Deserialize implementations for MyEnum so that MyEnum::Str("hi") will get serialized as (1, "hi") and MyEnum::Int(5) will get serialized as (42, 5).