# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 2014-10-02 23:25:37
# Node ID 21fda9dcd4e86111044a0a3172184b6721c70999
# Parent  7b123e5639f4e5304c0c2dfd5b698e1c879b6d66

lazyset: split the iteration logic from the condition filtering logic

So that the filter can be reused by `fastasc` or `fastdesc`.

diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -2436,8 +2436,11 @@ class lazyset(abstractsmartset):
         return c[x]
 
     def __iter__(self):
+        return self._iterfilter(self._subset)
+
+    def _iterfilter(self, it):
         cond = self._condition
-        for x in self._subset:
+        for x in it:
             if cond(x):
                 yield x