Create an abstract class for schemas

Change-Id: I0845e8fa11db68add75bed40d44779f67c0a33aa
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4ec7140..9b3e0a1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -55,6 +55,7 @@
 add_definitions(-DBOOST_SPIRIT_X3_NO_FILESYSTEM)
 
 set(parser_SRCS
+    src/static_schema.cpp
     src/schema.cpp
     src/parser.cpp
     src/ast_commands.cpp