use super::{TypeMetadata, TypeRegistry};
/// A trait for types that can be registered as aliases.
///
/// Users shouldn't usually need to impl this - a blanket impl is provided
/// for all types that impl `TypeMetadata`.
pub trait TypeAlias {
/// Registers this type as a type alias.
///
/// Note that this should not be used on types which have `TypeMetadata`
/// derived on them - it's only really meant for use on actual rust type
/// aliases.
fn register_alias(name: &str, registry: &mut TypeRegistry);
}
impl<T> TypeAlias for T
where
T: TypeMetadata + 'static,
{
fn register_alias(name: &str, registry: &mut TypeRegistry) {
let inner = Self::metadata(registry);
registry.register_alias(
crate::TypeId::for_type::<Self>(),
crate::types::Alias {
name: name.to_string(),
inner,
},
);
}
}