Mercurial > public > mercurial-scm > hg-stable
comparison mercurial/filelog.py @ 40387:f1a39128da95
filelog: add a hasnode() method (API)
Missing in the file storage interface is the ability to query whether
a specified value is a known node.
This commit defines that interface member and implements it on the
revlog and sqlite file stores.
Storage unit tests have been added.
The revlog implementation is a bit more complicated because index lookups
don't consistently raise the same exception. For SQLite, we can simply look
for a key in a dict.
Differential Revision: https://phab.mercurial-scm.org/D5163
| author | Gregory Szorc <gregory.szorc@gmail.com> |
|---|---|
| date | Wed, 03 Oct 2018 14:57:29 -0700 |
| parents | 324b4b10351e |
| children | 1b183edbb68e |
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| 40386:4a81d82474e9 | 40387:f1a39128da95 |
|---|---|
| 5 # This software may be used and distributed according to the terms of the | 5 # This software may be used and distributed according to the terms of the |
| 6 # GNU General Public License version 2 or any later version. | 6 # GNU General Public License version 2 or any later version. |
| 7 | 7 |
| 8 from __future__ import absolute_import | 8 from __future__ import absolute_import |
| 9 | 9 |
| 10 from .node import ( | |
| 11 nullid, | |
| 12 nullrev, | |
| 13 ) | |
| 10 from . import ( | 14 from . import ( |
| 11 error, | 15 error, |
| 12 repository, | 16 repository, |
| 13 revlog, | 17 revlog, |
| 14 ) | 18 ) |
| 30 def __len__(self): | 34 def __len__(self): |
| 31 return len(self._revlog) | 35 return len(self._revlog) |
| 32 | 36 |
| 33 def __iter__(self): | 37 def __iter__(self): |
| 34 return self._revlog.__iter__() | 38 return self._revlog.__iter__() |
| 39 | |
| 40 def hasnode(self, node): | |
| 41 if node in (nullid, nullrev): | |
| 42 return False | |
| 43 | |
| 44 try: | |
| 45 self._revlog.rev(node) | |
| 46 return True | |
| 47 except (TypeError, ValueError, IndexError, error.LookupError): | |
| 48 return False | |
| 35 | 49 |
| 36 def revs(self, start=0, stop=None): | 50 def revs(self, start=0, stop=None): |
| 37 return self._revlog.revs(start=start, stop=stop) | 51 return self._revlog.revs(start=start, stop=stop) |
| 38 | 52 |
| 39 def parents(self, node): | 53 def parents(self, node): |