1 files changed, 19 insertions, 0 deletions
diff --git a/boot/ast.cc b/boot/ast.cc
index 287b7aa..1f2b884 100644
--- a/boot/ast.cc
+++ b/boot/ast.cc
@@ -61,6 +61,11 @@ namespace elna::boot
         __builtin_unreachable();
     }
 
+    void empty_visitor::visit(extern_type_expression *)
+    {
+        __builtin_unreachable();
+    }
+
     void empty_visitor::visit(variable_declaration *)
     {
         __builtin_unreachable();
@@ -436,6 +441,10 @@ namespace elna::boot
     {
     }
 
+    void walking_visitor::visit(extern_type_expression *)
+    {
+    }
+
     void walking_visitor::visit(cast_expression *expression)
     {
         expression->value().accept(this);
@@ -731,6 +740,16 @@ namespace elna::boot
         return this;
     }
 
+    extern_type_expression::extern_type_expression(const source_position position)
+        : node(position)
+    {
+    }
+
+    void extern_type_expression::accept(parser_visitor *visitor)
+    {
+        visitor->visit(this);
+    }
+
     type_expression& constant_type_expression::base()
     {
         return *m_base;