1 files changed, 2 insertions, 0 deletions
diff --git a/src/lookup/lookup.h b/src/lookup/lookup.h
index 1a7ad55..d4ddc37 100644
--- a/src/lookup/lookup.h
+++ b/src/lookup/lookup.h
@@ -53,6 +53,8 @@ struct lookup_value_t{
 };
 
 
+enum constraint_type{NO_CONSTRAINT, CONSTRAINT_ONESTEP, CONSTRAINT_NOSEARCH };
+
 class FacadePhraseIndex;