Mercurial > public > mercurial-scm > hg
comparison mercurial/revset.py @ 22999:88ac1be3f767
revset-only: use __nonzero__ to check if a revset is empty
For some smartsets, computing length is more expensive than checking if the set
is empty.
| author | Pierre-Yves David <pierre-yves.david@fb.com> |
|---|---|
| date | Wed, 08 Oct 2014 02:45:21 -0700 |
| parents | 93e5d24692cc |
| children | 62d19ce9d7b6 |
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| 22998:93e5d24692cc | 22999:88ac1be3f767 |
|---|---|
| 396 cl = repo.changelog | 396 cl = repo.changelog |
| 397 # i18n: "only" is a keyword | 397 # i18n: "only" is a keyword |
| 398 args = getargs(x, 1, 2, _('only takes one or two arguments')) | 398 args = getargs(x, 1, 2, _('only takes one or two arguments')) |
| 399 include = getset(repo, spanset(repo), args[0]) | 399 include = getset(repo, spanset(repo), args[0]) |
| 400 if len(args) == 1: | 400 if len(args) == 1: |
| 401 if len(include) == 0: | 401 if not include: |
| 402 return baseset() | 402 return baseset() |
| 403 | 403 |
| 404 descendants = set(_revdescendants(repo, include, False)) | 404 descendants = set(_revdescendants(repo, include, False)) |
| 405 exclude = [rev for rev in cl.headrevs() | 405 exclude = [rev for rev in cl.headrevs() |
| 406 if not rev in descendants and not rev in include] | 406 if not rev in descendants and not rev in include] |