--- a/mercurial/pycompat.py Mon Aug 20 09:48:08 2018 -0700
+++ b/mercurial/pycompat.py Fri Aug 17 00:51:46 2018 +0200
@@ -278,6 +278,7 @@
hasattr = _wrapattrfunc(builtins.hasattr)
setattr = _wrapattrfunc(builtins.setattr)
xrange = builtins.range
+ membershiprange = builtins.range
unicode = str
def open(name, mode='r', buffering=-1, encoding=None):
@@ -343,6 +344,25 @@
strurl = identity
bytesurl = identity
+ class membershiprange(object):
+ "Like xrange(a,b) but with constant-time membership test"
+ def __init__(self, a, b):
+ self._range = xrange(a, b)
+ def __getitem__(self, n):
+ return self._range[n]
+ def __hash__(self):
+ return hash(self._range)
+ def __iter__(self):
+ return iter(self._range)
+ def __len__(self):
+ return len(self._range)
+ def __reversed__(self):
+ return reversed(self._range)
+ def __contains__(self, n):
+ if not self._range:
+ return False
+ return n >= self._range[0] and n <= self._range[-1]
+
# this can't be parsed on Python 3
exec('def raisewithtb(exc, tb):\n'
' raise exc, None, tb\n')