Mercurial > hg
view mercurial/revlogutils/concurrency_checker.py @ 47770:460e479be66e
typing: add several assertions to dirstatemap to appease pytype
I think it's been mentioned in IRC that these can't be None in this case. This
fixes:
File "/mnt/c/Users/Matt/hg/mercurial/dirstatemap.py", line 213, in addfile: unsupported operand type(s) for &: 'None' and 'int' [unsupported-operands]
No attribute '__and__' on None or '__rand__' on int
Called from (traceback):
line 290, in reset_state
File "/mnt/c/Users/Matt/hg/mercurial/dirstatemap.py", line 214, in addfile: unsupported operand type(s) for &: 'None' and 'int' [unsupported-operands]
No attribute '__and__' on None or '__rand__' on int
Called from (traceback):
line 290, in reset_state
Differential Revision: https://phab.mercurial-scm.org/D11235
author | Matt Harbison <matt_harbison@yahoo.com> |
---|---|
date | Fri, 30 Jul 2021 00:11:56 -0400 |
parents | e9901d01d135 |
children | 1c5810ce737e |
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from ..i18n import _ from .. import error def get_checker(ui, revlog_name=b'changelog'): """Get a function that checks file handle position is as expected. This is used to ensure that files haven't been modified outside of our knowledge (such as on a networked filesystem, if `hg debuglocks` was used, or writes to .hg that ignored locks happened). Due to revlogs supporting a concept of buffered, delayed, or diverted writes, we're allowing the files to be shorter than expected (the data may not have been written yet), but they can't be longer. Please note that this check is not perfect; it can't detect all cases (there may be false-negatives/false-OKs), but it should never claim there's an issue when there isn't (false-positives/false-failures). """ vpos = ui.config(b'debug', b'revlog.verifyposition.' + revlog_name) # Avoid any `fh.tell` cost if this isn't enabled. if not vpos or vpos not in [b'log', b'warn', b'fail']: return None def _checker(fh, fn, expected): if fh.tell() <= expected: return msg = _(b'%s: file cursor at position %d, expected %d') # Always log if we're going to warn or fail. ui.log(b'debug', msg + b'\n', fn, fh.tell(), expected) if vpos == b'warn': ui.warn((msg + b'\n') % (fn, fh.tell(), expected)) elif vpos == b'fail': raise error.RevlogError(msg % (fn, fh.tell(), expected)) return _checker