comparison mercurial/revset.py @ 22810:7f97cb12782f

addset: implement first and last methods

The implementation is non-lazy for now. One may want to make it more lazy in the
future.

22809:88dad916c008

    def reverse(self):
        self._list.reverse()
        if self._ascending is not None:
            self._ascending = not self._ascending

class generatorset(abstractsmartset):
    """Wrap a generator for lazy iteration

    Wrapper structure for generators that provides lazy membership and can
    be iterated more than once.

22810:7f97cb12782f

    def reverse(self):
        self._list.reverse()
        if self._ascending is not None:
            self._ascending = not self._ascending

    def first(self):
        if self:
            return self._list.first()
        return None

    def last(self):
        if self:
            return self._list.last()
        return None

class generatorset(abstractsmartset):
    """Wrap a generator for lazy iteration

    Wrapper structure for generators that provides lazy membership and can
    be iterated more than once.