[PATCH 06 of 10 V2] branchmap: make write a method on the branchmap object

[Pierre-Yves David]

# HG changeset patch
# User Pierre-Yves David <pierre-yves.david at logilab.fr>
# Date 1356017323 -3600
# Node ID f0d56efaa35af94289119820179508e9546984a1
# Parent  dcd43ac7572d5d9eacb76ca577eb96d36a8cbb70
branchmap: make write a method on the branchmap object

diff --git a/mercurial/branchmap.py b/mercurial/branchmap.py
--- a/mercurial/branchmap.py
+++ b/mercurial/branchmap.py
@@ -40,21 +40,10 @@ def read(repo):
         if repo.ui.debugflag:
             repo.ui.warn(str(inst), '\n')
         partial = branchcache()
     return partial
 
-def write(repo, cache):
-    try:
-        f = repo.opener("cache/branchheads", "w", atomictemp=True)
-        f.write("%s %s\n" % (hex(cache.tipnode), cache.tiprev))
-        for label, nodes in cache.iteritems():
-            for node in nodes:
-                f.write("%s %s\n" % (hex(node), encoding.fromlocal(label)))
-        f.close()
-    except (IOError, OSError):
-        pass
-
 def update(repo, partial, ctxgen):
     """Given a branchhead cache, partial, that may have extra nodes or be
     missing heads, and a generator of nodes that are at least a superset of
     heads missing, this function updates partial to be correct.
     """
@@ -131,11 +120,11 @@ def updatecache(repo):
     if partial.tiprev < catip:
         ctxgen = (repo[r] for r in cl.revs(partial.tiprev + 1, catip))
         update(repo, partial, ctxgen)
         partial.tipnode = cl.node(catip)
         partial.tiprev = catip
-        write(repo, partial)
+        partial.write(repo)
     # If cacheable tip were lower than actual tip, we need to update the
     # cache up to tip. This update (from cacheable to actual tip) is not
     # written to disk since it's not cacheable.
     tiprev = len(repo) - 1
     if partial.tiprev < tiprev:
@@ -150,5 +139,16 @@ class branchcache(dict):
 
     def __init__(self, entries=(), tipnode=nullid, tiprev=nullrev):
         super(branchcache, self).__init__(entries)
         self.tipnode = tipnode
         self.tiprev = tiprev
+
+    def write(self, repo):
+        try:
+            f = repo.opener("cache/branchheads", "w", atomictemp=True)
+            f.write("%s %s\n" % (hex(self.tipnode), self.tiprev))
+            for label, nodes in self.iteritems():
+                for node in nodes:
+                    f.write("%s %s\n" % (hex(node), encoding.fromlocal(label)))
+            f.close()
+        except (IOError, OSError):
+            pass
diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -1438,11 +1438,11 @@ class localrepository(object):
                       if self.changelog.hasnode(node))
             cache = self._branchcache
             branchmap.update(self, cache, ctxgen)
             cache.tipnode = self.changelog.tip()
             cache.tiprev = self.changelog.rev(cache.tipnode)
-            branchmap.write(self, cache)
+            cache.write(self)
 
         # Ensure the persistent tag cache is updated.  Doing it now
         # means that the tag cache only has to worry about destroyed
         # heads immediately after a strip/rollback.  That in turn
         # guarantees that "cachetip == currenttip" (comparing both rev
@@ -2496,11 +2496,11 @@ class localrepository(object):
                             for node in rbheads))
                     cache = branchmap.branchcache(rbranchmap,
                                                   self[rtiprev].node(),
                                                   rtiprev)
                     self._branchcache = cache
-                    branchmap.write(self, cache)
+                    cache.write(self)
             self.invalidate()
             return len(self.heads()) + 1
         finally:
             lock.release()