Share one Namespace type between gen and macro
diff --git a/macro/src/expand.rs b/macro/src/expand.rs
index ac39e4e..373bfee 100644
--- a/macro/src/expand.rs
+++ b/macro/src/expand.rs
@@ -1,5 +1,5 @@
-use crate::namespace::Namespace;
use crate::syntax::atom::Atom::{self, *};
+use crate::syntax::namespace::Namespace;
use crate::syntax::{self, check, Api, ExternFn, ExternType, Signature, Struct, Type, Types};
use proc_macro2::{Ident, Span, TokenStream};
use quote::{format_ident, quote, quote_spanned};