# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 1412319417 18000
# Node ID 4ed47a1b2d24899dd7f61ab31a6dd58637faf6cf
# Parent  70a0664008ea2dc485f2222cc3b7c5625c8751f4
generatorset: implement __nonzero__

This is necessary to become a real smartset.

diff -r 70a0664008ea -r 4ed47a1b2d24 mercurial/revset.py
--- a/mercurial/revset.py	Fri Oct 03 00:31:33 2014 -0500
+++ b/mercurial/revset.py	Fri Oct 03 01:56:57 2014 -0500
@@ -2741,6 +2741,11 @@
         self._genlist = baseset([])
         self._finished = False
 
+    def __nonzero__(self):
+        for r in self:
+            return True
+        return False
+
     def __contains__(self, x):
         if x in self._cache:
             return self._cache[x]