diff rust/hg-core/src/revlog/changelog.rs @ 47964:796206e74b10

rhg: Reuse manifest when checking status of multiple ambiguous files

When `rhg status` cannot determine whether a file is clean based on mtime and
size alone, it needs to compare its contents with those found in the parent
commit. Previously, rhg would find the (same) manifest of that commit again
for every such file. This is lifted out of the loop and reused.

Differential Revision: https://phab.mercurial-scm.org/D11411

--- a/rust/hg-core/src/revlog/changelog.rs	Mon Sep 13 18:02:45 2021 +0200
+++ b/rust/hg-core/src/revlog/changelog.rs	Mon Sep 13 18:09:10 2021 +0200
@@ -57,9 +57,11 @@
 
     /// Return the node id of the `manifest` referenced by this `changelog`
     /// entry.
-    pub fn manifest_node(&self) -> Result<&[u8], RevlogError> {
-        self.lines()
-            .next()
-            .ok_or_else(|| HgError::corrupted("empty changelog entry").into())
+    pub fn manifest_node(&self) -> Result<Node, HgError> {
+        Node::from_hex_for_repo(
+            self.lines()
+                .next()
+                .ok_or_else(|| HgError::corrupted("empty changelog entry"))?,
+        )
     }
 }