# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 1407447660 25200
# Node ID 5dcc58649b1a18ad89dce2e75bbf8be3e73619d8
# Parent  feb4797c676e6d1af5eb993e08cc1cb53c1b528d
phase: extract the phaseroots serialization in a dedicated method

In most case, the file creation logic will be handled by the
transaction itself. The write method has to stay around for the case
where the repository is modified outside a transaction (strip).

diff -r feb4797c676e -r 5dcc58649b1a mercurial/phases.py
--- a/mercurial/phases.py	Thu Aug 07 14:40:02 2014 -0700
+++ b/mercurial/phases.py	Thu Aug 07 14:41:00 2014 -0700
@@ -196,11 +196,14 @@
             return
         f = self.opener('phaseroots', 'w', atomictemp=True)
         try:
-            for phase, roots in enumerate(self.phaseroots):
-                for h in roots:
-                    f.write('%i %s\n' % (phase, hex(h)))
+            self._write(f)
         finally:
             f.close()
+
+    def _write(self, fp):
+        for phase, roots in enumerate(self.phaseroots):
+            for h in roots:
+                fp.write('%i %s\n' % (phase, hex(h)))
         self.dirty = False
 
     def _updateroots(self, phase, newroots):