1 files changed, 4 insertions, 0 deletions
diff --git a/grammer.h b/grammer.h
index 90f9e87..5c80d57 100644
--- a/grammer.h
+++ b/grammer.h
@@ -102,5 +102,9 @@ bool ChildIdIsNode(int32_t child_id); // identity
 index_t TokenIdFromChildId(int32_t child_id);
 int32_t ChildIdFromTokenId(index_t token_id);
 
+// only convenience functions
+index_t NodeIdFromChildId(int32_t child_id);
+int32_t ChildIdFromNodeId(index_t node_id);
+
 } // namespace Gram