# HG changeset patch
# User Siddharth Agarwal <sid0@fb.com>
# Date 1416127169 28800
# Node ID 83225aff0265e76647d1e627d1723e0afb0befdf
# Parent  5c3a29be8faecd9402efa849ff234af7c854007c
ancestor: add a way to test whether a missing ancestor object has bases

This is pretty trivial so there's no unit test coverage for it.

This will be used by setdiscovery.

diff -r 5c3a29be8fae -r 83225aff0265 mercurial/ancestor.py
--- a/mercurial/ancestor.py	Fri Nov 14 16:53:40 2014 -0800
+++ b/mercurial/ancestor.py	Sun Nov 16 00:39:29 2014 -0800
@@ -146,6 +146,10 @@
             self.bases.add(nullrev)
         self.pfunc = pfunc
 
+    def hasbases(self):
+        '''whether the common set has any non-trivial bases'''
+        return self.bases and self.bases != set([nullrev])
+
     def missingancestors(self, revs):
         '''return all the ancestors of revs that are not ancestors of self.bases