# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 1434669195 25200
# Node ID 01bdeb847f81ca4fa324dc712783553d276cf072
# Parent  8bb2e04cc18cb4dcae5926b458b3dd3138d9127f
evolve: avoid creating changectx object in _precursors

The repo lookups and object creations have a significant performance overhead.

diff -r 8bb2e04cc18c -r 01bdeb847f81 hgext/evolve.py
--- a/hgext/evolve.py	Thu Jun 18 16:18:29 2015 -0700
+++ b/hgext/evolve.py	Thu Jun 18 16:13:15 2015 -0700
@@ -411,8 +411,9 @@
     cs = set()
     nm = repo.changelog.nodemap
     markerbysubj = repo.obsstore.precursors
+    node = repo.changelog.node
     for r in s:
-        for p in markerbysubj.get(repo[r].node(), ()):
+        for p in markerbysubj.get(node(r), ()):
             pr = nm.get(p[0])
             if pr is not None:
                 cs.add(pr)