# HG changeset patch
# User Augie Fackler <augie@google.com>
# Date 2018-02-15 04:23:57
# Node ID e37be270e1632bb651cf0bb69c17a6e362a8435a
# Parent  c2c5f9f6fa215d2b501e71b74602e0e7aa3ca1a8

remotenames: port partway to python3 by using collections.MutableMapping

test-logexchange.t doesn't pass after this, but at least the
remotenames extension can be imported.

Differential Revision: https://phab.mercurial-scm.org/D2280

diff --git a/hgext/remotenames.py b/hgext/remotenames.py
--- a/hgext/remotenames.py
+++ b/hgext/remotenames.py
@@ -22,7 +22,7 @@ remotenames.branches
 
 from __future__ import absolute_import
 
-import UserDict
+import collections
 
 from mercurial.i18n import _
 
@@ -57,7 +57,7 @@ configitem('remotenames', 'branches',
     default=True,
 )
 
-class lazyremotenamedict(UserDict.DictMixin):
+class lazyremotenamedict(collections.MutableMapping):
     """
     Read-only dict-like Class to lazily resolve remotename entries
 
@@ -110,6 +110,18 @@ class lazyremotenamedict(UserDict.DictMi
         else:
             raise KeyError()
 
+    def __iter__(self):
+        return iter(self.potentialentries)
+
+    def __len__(self):
+        return len(self.potentialentries)
+
+    def __setitem__(self):
+        raise NotImplementedError
+
+    def __delitem__(self):
+        raise NotImplementedError
+
     def _fetchandcache(self, key):
         if key in self.cache:
             return self.cache[key]