Share one Namespace type between gen and macro
diff --git a/gen/write.rs b/gen/write.rs
index 7a57111..28a2d3b 100644
--- a/gen/write.rs
+++ b/gen/write.rs
@@ -1,7 +1,7 @@
-use crate::gen::namespace::Namespace;
use crate::gen::out::OutFile;
use crate::gen::{include, Opt};
use crate::syntax::atom::Atom::{self, *};
+use crate::syntax::namespace::Namespace;
use crate::syntax::{Api, ExternFn, ExternType, Receiver, Signature, Struct, Type, Types, Var};
use proc_macro2::Ident;
use std::collections::HashMap;