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rust-regex: fix issues with regex anchoring and performance...
rust-regex: fix issues with regex anchoring and performance It turns out that the way I tried to work around `regex`'s behavior difference with `re2` and Python's `re` was 1) buggy and 2) much more complicated than needed. In a few words: `regex` adds `.*` on either side of patterns when no start or end anchor is present. My previous workaround put `^` or `$` for every pattern, which is wrong even without the other 2 bugs on top of it. Using `^(?:<patterns>)` right at the end of the `regex` path fixes the issue. I've opened an issue to get a build option instead: https://github.com/rust-lang/regex/issues/675 Differential Revision: https://phab.mercurial-scm.org/D8506

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lib.rs
69 lines | 2.0 KiB | application/rls-services+xml | RustLexer
// lib.rs
//
// Copyright 2018 Georges Racinet <gracinet@anybox.fr>
//
// This software may be used and distributed according to the terms of the
// GNU General Public License version 2 or any later version.
//! Python bindings of `hg-core` objects using the `cpython` crate.
//! Once compiled, the resulting single shared library object can be placed in
//! the `mercurial` package directly as `rustext.so` or `rustext.dll`.
//! It holds several modules, so that from the point of view of Python,
//! it behaves as the `cext` package.
//!
//! Example:
//!
//! ```text
//! >>> from mercurial.rustext import ancestor
//! >>> ancestor.__doc__
//! 'Generic DAG ancestor algorithms - Rust implementation'
//! ```
/// This crate uses nested private macros, `extern crate` is still needed in
/// 2018 edition.
#[macro_use]
extern crate cpython;
pub mod ancestors;
mod cindex;
mod conversion;
#[macro_use]
pub mod ref_sharing;
pub mod dagops;
pub mod debug;
pub mod dirstate;
pub mod discovery;
pub mod exceptions;
pub mod parsers;
pub mod revlog;
pub mod utils;
py_module_initializer!(rustext, initrustext, PyInit_rustext, |py, m| {
m.add(
py,
"__doc__",
"Mercurial core concepts - Rust implementation",
)?;
let dotted_name: String = m.get(py, "__name__")?.extract(py)?;
m.add(py, "ancestor", ancestors::init_module(py, &dotted_name)?)?;
m.add(py, "dagop", dagops::init_module(py, &dotted_name)?)?;
m.add(py, "debug", debug::init_module(py, &dotted_name)?)?;
m.add(py, "discovery", discovery::init_module(py, &dotted_name)?)?;
m.add(py, "dirstate", dirstate::init_module(py, &dotted_name)?)?;
m.add(py, "revlog", revlog::init_module(py, &dotted_name)?)?;
m.add(
py,
"parsers",
parsers::init_parsers_module(py, &dotted_name)?,
)?;
m.add(py, "GraphError", py.get_type::<exceptions::GraphError>())?;
Ok(())
});
#[cfg(not(any(feature = "python27-bin", feature = "python3-bin")))]
#[test]
#[ignore]
fn libpython_must_be_linked_to_run_tests() {
// stub function to tell that some tests wouldn't run
}