Mercurial > hg
view mercurial/mergeutil.py @ 44593:496868f1030c
rust-matchers: use the `regex` crate
Instead of falling back to Python when a code path with "ignore" functionality
is reached and `Re2` is not installed, the default compilation (i.e. without
the `with-re2` feature) will use the `regex` crate for all regular expressions
business.
As with the introduction of `Re2` in a previous series, this yields a big
performance boost compared to the Python + C code in `status`, `diff`, `commit`,
`update`, and maybe others.
For now `Re2` looks to be faster at compiling the DFA (1.5ms vs 5ms for
Netbeans' `.hgignore`) and a bit faster in actual use: (123ms vs 137ms for
the parallel traversal of Netbeans' clean repo). I am in talks with the author
of `regex` to see whether that performance difference is a bug, a "won't fix",
or a tuning issue.
The `regex` crate is already one of our dependencies and using this code does
not require any additional work from the end-user than to use the Rust
extensions.
Differential Revision: https://phab.mercurial-scm.org/D8323
author | Raphaël Gomès <rgomes@octobus.net> |
---|---|
date | Tue, 24 Mar 2020 17:55:59 +0100 |
parents | 8ff1ecfadcd1 |
children | 32ce4cbaec4b |
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# mergeutil.py - help for merge processing in mercurial # # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import from .i18n import _ from . import error def checkunresolved(ms): if list(ms.unresolved()): raise error.Abort( _(b"unresolved merge conflicts (see 'hg help resolve')") ) if ms.mdstate() != b's' or list(ms.driverresolved()): raise error.Abort( _(b'driver-resolved merge conflicts'), hint=_(b'run "hg resolve --all" to resolve'), )