Crate enum_info 

enum-info is a crate to generate an enum impl which can tell you the number of – and, in most cases, list the – variants in an enum.

Example

use enum_info::enum_info;
 
#[enum_info]
#[derive(PartialEq, Eq)]
enum Characters {
	Katty,
	Jax
}
 
assert_eq!(Characters::variant_count(), 2);
assert_eq!(Characters::VARIANTS, [Characters::Katty, Characters::Jax]);

Attribute Macros

enum_info

Generates an item impl with a guaranteed variant_count method and an associated constant, VARIANTS, for enums whose variants are all unit-like.