Mercurial > hg-stable
comparison mercurial/revset.py @ 22863:a1a02b516cca
baseset: empty or one-element sets are ascending and descending
The empty set is full of interesting properties. In the ordering case, the one
element set is too.
| author | Pierre-Yves David <pierre-yves.david@fb.com> |
|---|---|
| date | Thu, 09 Oct 2014 04:12:20 -0700 |
| parents | 9e5576f822cc |
| children | 96b6b3d78697 |
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| 22862:9e5576f822cc | 22863:a1a02b516cca |
|---|---|
| 2366 | 2366 |
| 2367 def isascending(self): | 2367 def isascending(self): |
| 2368 """Returns True if the collection is ascending order, False if not. | 2368 """Returns True if the collection is ascending order, False if not. |
| 2369 | 2369 |
| 2370 This is part of the mandatory API for smartset.""" | 2370 This is part of the mandatory API for smartset.""" |
| 2371 if len(self) <= 1: | |
| 2372 return True | |
| 2371 return self._ascending is not None and self._ascending | 2373 return self._ascending is not None and self._ascending |
| 2372 | 2374 |
| 2373 def isdescending(self): | 2375 def isdescending(self): |
| 2374 """Returns True if the collection is descending order, False if not. | 2376 """Returns True if the collection is descending order, False if not. |
| 2375 | 2377 |
| 2376 This is part of the mandatory API for smartset.""" | 2378 This is part of the mandatory API for smartset.""" |
| 2379 if len(self) <= 1: | |
| 2380 return True | |
| 2377 return self._ascending is not None and not self._ascending | 2381 return self._ascending is not None and not self._ascending |
| 2378 | 2382 |
| 2379 def first(self): | 2383 def first(self): |
| 2380 if self: | 2384 if self: |
| 2381 if self._ascending is None: | 2385 if self._ascending is None: |