Function option_inner

crates/csskit_derives/src/field_view.rs:46–56

If `ty` is `Option `, return `Some(&T)`. Otherwise `None`.

(ty: &Type)

/// If `ty` is `Option<T>`, return `Some(&T)`. Otherwise `None`.
pub(crate) fn option_inner(ty: &Type) -> Option<&Type> {
	if let Type::Path(path) = ty
		&& let Some(seg) = path.path.segments.last()
		&& seg.ident == "Option"
		&& let PathArguments::AngleBracketed(args) = &seg.arguments
		&& let Some(GenericArgument::Type(inner)) = args.args.first()
	{
		return Some(inner);
	}
	None
}