use rustc_macros::{HashStable_NoContext, TyDecodable, TyEncodable};

use crate::Interner;

#[derive(derivative::Derivative)]
#[derivative(
    Clone(bound = ""),
    Copy(bound = ""),
    Debug(bound = ""),
    Eq(bound = ""),
    PartialEq(bound = "")
)]
#[cfg_attr(feature = "nightly", derive(TyDecodable, TyEncodable, HashStable_NoContext))]
pub enum GenericArgKind<I: Interner> {
    Lifetime(I::Region),
    Type(I::Ty),
    Const(I::Const),
}