def ancestor(self, a, b):
"""calculate the least common ancestor of nodes a and b"""
a, b = self.rev(a), self.rev(b)
try:
ancs = self.index.ancestors(a, b)
except (AttributeError, OverflowError):
ancs = ancestor.ancestors(self.parentrevs, a, b)
if ancs:
# choose a consistent winner when there's a tie
return min(map(self.node, ancs))
return nullid
def ancestor(self, a, b):
"""calculate the least common ancestor of nodes a and b"""
a, b = self.rev(a), self.rev(b)
try:
ancs = self.index.ancestors(a, b)
except (AttributeError, OverflowError):
ancs = ancestor.ancestors(self.parentrevs, a, b)
if ancs:
# choose a consistent winner when there's a tie
return min(map(self.node, ancs))
return nullid