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annotate rust/hg-cpython/src/exceptions.rs @ 41184:dcf818267bc1

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rust-cpython: rustdoc improvements By default, `cargo doc` builds the documentation for public constructs only, so we make public those that can. Since `cindex` is not safe, we keep it private. Unfortunately, the macro syntax of rust-cpython doesn't allow us to document the classes directly, so we resort to do that at the module level. Differential Revision: https://phab.mercurial-scm.org/D5546
author Georges Racinet <georges.racinet@octobus.net>
date Sat, 22 Dec 2018 11:38:03 +0100
parents 5532823e8c18
children ee943a920606
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1 // ancestors.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 //! Bindings for Rust errors
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9 //!
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10 //! [`GraphError`] exposes `hg::GraphError` as a subclass of `ValueError`
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11 //!
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12 //! [`GraphError`]: struct.GraphError.html
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13 use cpython::exc::ValueError;
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14 use cpython::{PyErr, Python};
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15 use hg;
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16
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17 py_exception!(rustext, GraphError, ValueError);
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18
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19 impl GraphError {
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20 pub fn pynew(py: Python, inner: hg::GraphError) -> PyErr {
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21 match inner {
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22 hg::GraphError::ParentOutOfRange(r) => {
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23 GraphError::new(py, ("ParentOutOfRange", r))
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24 }
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25 }
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26 }
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27 }