From 13843300299b376079790692e448baa8006b25c1 Mon Sep 17 00:00:00 2001
From: conduition <conduition@proton.me>
Date: Sun, 11 Feb 2024 17:14:13 +0000
Subject: [PATCH] taproot: add TapNodeHash getter method on TapTree and
 NodeInfo

Fixes a gap in the API of the taproot module. Callers can now use
TapTree::root_hash or NodeInfo::node_hash to extract the taproot
tree merkle root hash for fast validation without any ECC overhead.
---
 bitcoin/src/taproot/mod.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/bitcoin/src/taproot/mod.rs b/bitcoin/src/taproot/mod.rs
index 203ac314..14308ac9 100644
--- a/bitcoin/src/taproot/mod.rs
+++ b/bitcoin/src/taproot/mod.rs
@@ -693,6 +693,9 @@ impl TapTree {
     /// Returns [`TapTreeIter<'_>`] iterator for a taproot script tree, operating in DFS order over
     /// tree [`ScriptLeaf`]s.
     pub fn script_leaves(&self) -> ScriptLeaves { ScriptLeaves { leaf_iter: self.0.leaf_nodes() } }
+
+    /// Returns the root [`TapNodeHash`] of this tree.
+    pub fn root_hash(&self) -> TapNodeHash { self.0.hash }
 }
 
 impl TryFrom<TaprootBuilder> for TapTree {
@@ -842,6 +845,9 @@ impl NodeInfo {
 
     /// Creates an iterator over all leaves (including hidden leaves) in the tree.
     pub fn leaf_nodes(&self) -> LeafNodes { LeafNodes { leaf_iter: self.leaves.iter() } }
+
+    /// Returns the root [`TapNodeHash`] of this node info.
+    pub fn node_hash(&self) -> TapNodeHash { self.hash }
 }
 
 impl TryFrom<TaprootBuilder> for NodeInfo {