add presence containers

Change-Id: Ic8e33d68e496deae9dfe4c3e5ebcecbd45ee31b2
diff --git a/src/interpreter.hpp b/src/interpreter.hpp
index 72c839e..a4a5cc0 100644
--- a/src/interpreter.hpp
+++ b/src/interpreter.hpp
@@ -12,9 +12,12 @@
 #include "parser.hpp"
 
 struct Interpreter : boost::static_visitor<void> {
-    Interpreter(Parser &m_parser);
+    Interpreter(Parser& parser, Schema&);
 
     void operator()(const cd_&) const;
+    void operator()(const create_&) const;
+    void operator()(const delete_&) const;
+
 private:
     Parser& m_parser;
 };