diff mercurial/repoview.py @ 18245:aff706b3a21c

clfilter: add mutable filtering

It filters all mutable changesets, leaving only public changeset unfiltered.
This filtering set is expected to be much more stable that the previous one as
public changeset are unlikely to disapear.

The only official use of this filter is for branchcache.

--- a/mercurial/repoview.py	Mon Jan 07 02:14:41 2013 +0100
+++ b/mercurial/repoview.py	Wed Jan 02 01:57:46 2013 +0100
@@ -8,6 +8,7 @@
 
 import copy
 import phases
+import util
 
 
 def computehidden(repo):
@@ -29,9 +30,20 @@
         return frozenset(repo.revs('hidden() + secret()'))
     return frozenset()
 
+def computemutable(repo):
+    """compute the set of revision that should be filtered when used a server
+
+    Secret and hidden changeset should not pretend to be here."""
+    assert not repo.changelog.filteredrevs
+    # fast check to avoid revset call on huge repo
+    if util.any(repo._phasecache.phaseroots[1:]):
+        return frozenset(repo.revs('draft() + secret()'))
+    return frozenset()
+
 # function to compute filtered set
 filtertable = {'hidden': computehidden,
-               'unserved': computeunserved}
+               'unserved': computeunserved,
+               'mutable':  computemutable}
 ### Nearest subset relation
 # Nearest subset of filter X is a filter Y so that:
 # * Y is included in X,
@@ -39,7 +51,8 @@
 # This create and ordering used for branchmap purpose.
 # the ordering may be partial
 subsettable = {None: 'hidden',
-               'hidden': 'unserved'}
+               'hidden': 'unserved',
+               'unserved': 'mutable'}
 
 def filteredrevs(repo, filtername):
     """returns set of filtered revision for this filter name"""