1 files changed, 7 insertions, 0 deletions
diff --git a/include/lexer/enum_type.h b/include/lexer/enum_type.h
index 9de3dc7..e1c5b6f 100644
--- a/include/lexer/enum_type.h
+++ b/include/lexer/enum_type.h
@@ -25,4 +25,11 @@ enum guard_type
     GUARD_STRONG,
 };
 
+enum child_existance_type
+{
+    NOT_EXIST,
+    OPTIONAL,
+    EXIST,
+};
+
 }