From 4559c4427fcdebe1b816ce8c4e651cf11571b7d5 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Tue, 3 Nov 2026 06:23:23 +0100
Subject: tree changes had already

---
 src/document/sync.rs | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/document')

diff --git a/src/document/sync.rs b/src/document/sync.rs
index 44ad833..4a3fe5e 100644
--- a/src/document/sync.rs
+++ b/src/document/sync.rs
@@ -22,6 +22,13 @@ use crate::transport::SyncPayload;
 /// A sync message from a peer, decoded (`decode`), to apply (`SyncSession::receive`).
 pub(crate) struct Received(sync::Message);
 
+impl Received {
+    /// Whether it carries changes (it may carry only heads and what the peer needs).
+    pub(crate) fn carries_changes(&self) -> bool {
+        !self.0.changes.is_empty()
+    }
+}
+
 /// `payload` decoded. Before taking the document's lock: decoding a large message takes
 /// a while.
 pub(crate) fn decode(payload: &SyncPayload) -> anyhow::Result<Received> {
-- 
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