From c4f543c6dfc5c6048717b9f755e1676b7c29660c Mon Sep 17 00:00:00 2001
From: Vasily Sidorov <bazzilic@users.noreply.github.com>
Date: Thu, 28 Sep 2023 18:46:29 +0800
Subject: [PATCH] add `impl Hash for Anchor` (#221)

add impl Hash for Anchor
---
 taiga_halo2/src/merkle_tree.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/taiga_halo2/src/merkle_tree.rs b/taiga_halo2/src/merkle_tree.rs
index 700872bb..bf6d72eb 100644
--- a/taiga_halo2/src/merkle_tree.rs
+++ b/taiga_halo2/src/merkle_tree.rs
@@ -51,6 +51,12 @@ impl From<Node> for Anchor {
     }
 }
 
+impl Hash for Anchor {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.0.to_repr().hash(state);
+    }
+}
+
 #[derive(Clone, Debug, PartialEq, Eq, Copy, Hash, Default)]
 #[cfg_attr(feature = "borsh", derive(BorshSerialize, BorshDeserialize))]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]