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comparison mercurial/revset.py @ 22811:c1fd827e1ae0

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generatorset: implement first and last methods
author Pierre-Yves David <pierre-yves.david@fb.com>
date Mon, 06 Oct 2014 12:52:36 -0700
parents 7f97cb12782f
children fcd12b310148
comparison
equal deleted inserted replaced
22810:7f97cb12782f 22811:c1fd827e1ae0
2765 return self._ascending 2765 return self._ascending
2766 2766
2767 def isdescending(self): 2767 def isdescending(self):
2768 return not self._ascending 2768 return not self._ascending
2769 2769
2770 def first(self):
2771 if self._ascending:
2772 it = self.fastasc
2773 else:
2774 it = self.fastdesc
2775 if it is None:
2776 # we need to consume all and try again
2777 for x in self._consumegen():
2778 pass
2779 return self.first()
2780 if self:
2781 return it.next()
2782 return None
2783
2784 def last(self):
2785 if self._ascending:
2786 it = self.fastdesc
2787 else:
2788 it = self.fastasc
2789 if it is None:
2790 # we need to consume all and try again
2791 for x in self._consumegen():
2792 pass
2793 return self.first()
2794 if self:
2795 return it.next()
2796 return None
2797
2770 def spanset(repo, start=None, end=None): 2798 def spanset(repo, start=None, end=None):
2771 """factory function to dispatch between fullreposet and actual spanset 2799 """factory function to dispatch between fullreposet and actual spanset
2772 2800
2773 Feel free to update all spanset call sites and kill this function at some 2801 Feel free to update all spanset call sites and kill this function at some
2774 point. 2802 point.