Share one Namespace type between gen and macro
diff --git a/syntax/mod.rs b/syntax/mod.rs
index 4eaf81e..21ff447 100644
--- a/syntax/mod.rs
+++ b/syntax/mod.rs
@@ -7,6 +7,7 @@
 pub mod error;
 pub mod ident;
 mod impls;
+pub mod namespace;
 mod parse;
 pub mod set;
 mod tokens;