diff --git a/lib/include/artichoke/Parser/AST/AST.hpp b/lib/include/artichoke/Parser/AST/AST.hpp
index a53c54f..c44d640 100644
--- a/lib/include/artichoke/Parser/AST/AST.hpp
+++ b/lib/include/artichoke/Parser/AST/AST.hpp
@@ -23,4 +23,9 @@ namespace arti::lang::ast {
     Vector<TopLevelDeclNode> declarations;
   };
 
+  template <ASTNodePtr Node>
+  auto MakeNode() {
+    return std::make_unique<typename Node::element_type>();
+  }
+
 } // namespace arti::lang::ast
diff --git a/lib/include/artichoke/Parser/AST/Common.hpp b/lib/include/artichoke/Parser/AST/Common.hpp
index 4ce90d0..107cdd7 100644
--- a/lib/include/artichoke/Parser/AST/Common.hpp
+++ b/lib/include/artichoke/Parser/AST/Common.hpp
@@ -74,4 +74,10 @@ namespace arti::lang::ast {
   template <typename T>
   using Vector = std::vector<T>;
 
+  template <typename Node>
+  concept ASTNodePtr = requires {
+    typename Node::element_type;
+    requires std::is_same_v<std::unique_ptr<typename Node::element_type>, Node>;
+  };
+
 } // namespace arti::lang::ast
diff --git a/lib/include/artichoke/Parser/AST/Types.hpp b/lib/include/artichoke/Parser/AST/Types.hpp
index fd4560d..f3bf72e 100644
--- a/lib/include/artichoke/Parser/AST/Types.hpp
+++ b/lib/include/artichoke/Parser/AST/Types.hpp
@@ -57,6 +57,13 @@ namespace arti::lang::ast {
   struct nodes::NamespacedType {
     SourceLocation location;
 
+    String typeName;
+    TypeExpressionNode baseType;
+  };
+
+  struct nodes::NamespacedIdentifier {
+    SourceLocation location;
+
     Vector<String> identParts;
   };