From df2c1db6bd65c7c0139d09e7af48656e250ce84b Mon Sep 17 00:00:00 2001
From: Rahul Kothari <rahul.kothari.201@gmail.com>
Date: Wed, 7 Jun 2023 14:45:03 +0000
Subject: [PATCH] add is_empty() to nullifier_leaf

---
 .../stdlib/merkle_tree/nullifier_tree/nullifier_leaf.hpp         | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cpp/src/barretenberg/stdlib/merkle_tree/nullifier_tree/nullifier_leaf.hpp b/cpp/src/barretenberg/stdlib/merkle_tree/nullifier_tree/nullifier_leaf.hpp
index d7080b48bb..5bcca73c3a 100644
--- a/cpp/src/barretenberg/stdlib/merkle_tree/nullifier_tree/nullifier_leaf.hpp
+++ b/cpp/src/barretenberg/stdlib/merkle_tree/nullifier_tree/nullifier_leaf.hpp
@@ -37,6 +37,7 @@ struct nullifier_leaf {
         write(buf, nextValue);
     }
 
+    bool is_empty() const { return value == fr::zero(); }
     barretenberg::fr hash() const { return stdlib::merkle_tree::hash_multiple_native({ value, nextIndex, nextValue }); }
 };