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annotate rust/hg-cpython/src/lib.rs @ 42330:e240bec26626

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rust-dirstate: add rust-cpython bindings to the new parse/pack functions This allows for Python code to call `parse/pack_dirstate` transparently. These bindings are heavy given the relatively simple task, as they are bound to implementation details of both the C and Python code. They will be slimmed down in future patches and eventually completely removed once more of the dirstate code has been refactored/rewritten in Rust. Both functions emulate the mutate-on-loop style of the Python and C implementations by looping over changed items in the compatibility layer, instead of at the core functions. Differential Revision: https://phab.mercurial-scm.org/D6349
author Rapha?l Gom?s <rgomes@octobus.net>
date Mon, 06 May 2019 22:50:34 +0200
parents 13b64247f48f
children 94f3a73b6672
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1 // lib.rs
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2 //
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3 // Copyright 2018 Georges Racinet <gracinet@anybox.fr>
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4 //
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5 // This software may be used and distributed according to the terms of the
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6 // GNU General Public License version 2 or any later version.
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7
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8 //! Python bindings of `hg-core` objects using the `cpython` crate.
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9 //! Once compiled, the resulting single shared library object can be placed in
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10 //! the `mercurial` package directly as `rustext.so` or `rustext.dll`.
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11 //! It holds several modules, so that from the point of view of Python,
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12 //! it behaves as the `cext` package.
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13 //!
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14 //! Example:
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15 //!
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16 //! ```text
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17 //! >>> from mercurial.rustext import ancestor
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18 //! >>> ancestor.__doc__
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19 //! 'Generic DAG ancestor algorithms - Rust implementation'
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20 //! ```
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21
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22 #[macro_use]
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23 extern crate cpython;
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24 extern crate hg;
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25 extern crate libc;
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26 extern crate python27_sys;
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27
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28 pub mod ancestors;
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29 mod cindex;
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30 mod conversion;
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31 pub mod dagops;
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32 pub mod discovery;
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33 pub mod exceptions;
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34 pub mod dirstate;
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35
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36 py_module_initializer!(rustext, initrustext, PyInit_rustext, |py, m| {
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37 m.add(
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38 py,
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39 "__doc__",
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40 "Mercurial core concepts - Rust implementation",
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41 )?;
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42
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43 let dotted_name: String = m.get(py, "__name__")?.extract(py)?;
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44 m.add(py, "ancestor", ancestors::init_module(py, &dotted_name)?)?;
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45 m.add(py, "dagop", dagops::init_module(py, &dotted_name)?)?;
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46 m.add(py, "discovery", discovery::init_module(py, &dotted_name)?)?;
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47 m.add(py, "dirstate", dirstate::init_module(py, &dotted_name)?)?;
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48 m.add(py, "GraphError", py.get_type::<exceptions::GraphError>())?;
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49 Ok(())
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50 });