Function derive_discriminant

proc-macros/src/lib.rs:74–76

(input_item: TokenStream)

/// let b = EnumA::B(EnumB::Bar("bar".to_string()));
/// assert_eq!(b.to_discriminant(), EnumADiscriminant::B(EnumBDiscriminant::Bar));
/// ```
#[proc_macro_derive(ToDiscriminant, attributes(sub_discriminant, discriminant_attr))]
pub fn derive_discriminant(input_item: TokenStream) -> TokenStream {
	TokenStream::from(derive_discriminant_impl(input_item.into()).unwrap_or_else(|err| err.to_compile_error()))
}