introduce eager links

1 files changed, 7 insertions, 0 deletions

diff --git a/src/document/sync.rs b/src/document/sync.rs
index 44ad833..8780bf2 100644
--- a/src/document/sync.rs
+++ b/src/document/sync.rs
@@ -30,6 +30,13 @@ pub(crate) fn decode(payload: &SyncPayload) -> anyhow::Result<Received> {
         .map_err(|error| anyhow::anyhow!("Automerge decode failed: {error:?}"))
 }
 
+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()
+    }
+}
+
 /// A sync message being handed to our transport (for Mycelium: the HTTP request is in
 /// progress).
 #[derive(Clone)]