# HG changeset patch
# User FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
# Date 1416389714 -32400
# Node ID 115af8de76a4942a87071b1a5fe19787e612948a
# Parent  568ae89797c6c3ba07fdeb2b708c6487bd9cdb75
subrepo: add "_cachestorehashvfs" to handle cache store hash files via vfs

This "vfs" object will be used by subsequent patches to handle cache
store hash files without direct file APIs.

This patch decorates "_cachestorehashvfs" with "@propertycache" to
delay vfs creation, because it is used only for cooperation with other
repositories.

In this patch, "/" is used as the path separator, even though
"self._repo.join" uses platform specific path separator (e.g. "\\" on
Windows). But it is reasonable enough, because "store" and other
management file handling already include such implementation, and they
work well.

diff -r 568ae89797c6 -r 115af8de76a4 mercurial/subrepo.py
--- a/mercurial/subrepo.py	Wed Nov 19 18:35:14 2014 +0900
+++ b/mercurial/subrepo.py	Wed Nov 19 18:35:14 2014 +0900
@@ -566,6 +566,10 @@
         return self._repo.join(os.path.join(
             'cache', 'storehash', _getstorehashcachename(remotepath)))
 
+    @propertycache
+    def _cachestorehashvfs(self):
+        return scmutil.vfs(self._repo.join('cache/storehash'))
+
     def _readstorehashcache(self, remotepath):
         '''read the store hash cache for a given remote repository'''
         cachefile = self._getstorehashcachepath(remotepath)