diff mercurial/repoview.py @ 51262:f20c4b307a5a

rust-index: add fast-path for getting a list of all heads as nodes

This avoids a lot of back-and-forth between Python and Rust. We forgo adding
a fast-path in the `filteredchangelog` case yet. If it shows up in profiling,
we might add the variant with a filter.

--- a/mercurial/repoview.py	Wed Nov 29 23:22:51 2023 -0500
+++ b/mercurial/repoview.py	Tue Dec 05 14:50:05 2023 +0100
@@ -305,6 +305,10 @@
             raise error.FilteredIndexError(rev)
         return revs
 
+    def _head_node_ids(self):
+        # no Rust fast path implemented yet, so just loop in Python
+        return [self.node(r) for r in self.headrevs()]
+
     def headrevs(self, revs=None):
         if revs is None:
             try: