From 33d75659dac697a9ffdb684fbd202ebcaf21505c Mon Sep 17 00:00:00 2001
From: Martin Habovstiak <martin.habovstiak@gmail.com>
Date: Sat, 15 Mar 2025 19:38:48 +0100
Subject: [PATCH] Push `merkle_branch` module one level deeper.

This moves the content of the module into `buf` submodule making future
changes clearer.
---
 .../taproot/{merkle_branch.rs => merkle_branch/buf.rs}   | 2 +-
 bitcoin/src/taproot/merkle_branch/mod.rs                 | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)
 rename bitcoin/src/taproot/{merkle_branch.rs => merkle_branch/buf.rs} (98%)
 create mode 100644 bitcoin/src/taproot/merkle_branch/mod.rs

diff --git a/bitcoin/src/taproot/merkle_branch.rs b/bitcoin/src/taproot/merkle_branch/buf.rs
similarity index 98%
rename from bitcoin/src/taproot/merkle_branch.rs
rename to bitcoin/src/taproot/merkle_branch/buf.rs
index 6a523ba8d..d89559fcc 100644
--- a/bitcoin/src/taproot/merkle_branch.rs
+++ b/bitcoin/src/taproot/merkle_branch/buf.rs
@@ -92,7 +92,7 @@ impl TaprootMerkleBranchBuf {
     }
 
     /// Appends elements to proof.
-    pub(super) fn push(&mut self, h: TapNodeHash) -> Result<(), InvalidMerkleTreeDepthError> {
+    pub(in super::super) fn push(&mut self, h: TapNodeHash) -> Result<(), InvalidMerkleTreeDepthError> {
         if self.len() >= TAPROOT_CONTROL_MAX_NODE_COUNT {
             Err(InvalidMerkleTreeDepthError(self.0.len()))
         } else {
diff --git a/bitcoin/src/taproot/merkle_branch/mod.rs b/bitcoin/src/taproot/merkle_branch/mod.rs
new file mode 100644
index 000000000..838fe0b6e
--- /dev/null
+++ b/bitcoin/src/taproot/merkle_branch/mod.rs
@@ -0,0 +1,9 @@
+//! Contains `TaprootMerkleBranchBuf` and its associated types.
+
+mod buf;
+
+pub use buf::TaprootMerkleBranchBuf;
+use super::{
+    InvalidMerkleBranchSizeError, InvalidMerkleTreeDepthError, TapNodeHash, TaprootError,
+    TAPROOT_CONTROL_MAX_NODE_COUNT, TAPROOT_CONTROL_NODE_SIZE,
+};