# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 1434669215 25200
# Node ID a127f0f3bf5f6424c889cdec4112d0e919adac0e
# Parent  01bdeb847f81ca4fa324dc712783553d276cf072
evolve: avoid creating changectx object in _allprecursors

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

diff -r 01bdeb847f81 -r a127f0f3bf5f hgext/evolve.py
--- a/hgext/evolve.py	Thu Jun 18 16:13:15 2015 -0700
+++ b/hgext/evolve.py	Thu Jun 18 16:13:35 2015 -0700
@@ -421,7 +421,8 @@
 
 def _allprecursors(repo, s):  # XXX we need a better naming
     """transitive precursors of a subset"""
-    toproceed = [repo[r].node() for r in s]
+    node = repo.changelog.node
+    toproceed = [node(r) for r in s]
     seen = set()
     allsubjects = repo.obsstore.precursors
     while toproceed: