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annotate rust/hg-cpython/src/exceptions.rs @ 42557:d26e4a434fe5

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rust: run rfmt on all hg-core/hg-cpython code Differential Revision: https://phab.mercurial-scm.org/D6591
author Rapha?l Gom?s <rgomes@octobus.net>
date Mon, 01 Jul 2019 10:50:18 +0200
parents 94f3a73b6672
children 326fdce22fb2
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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 //! but some variants of `hg::GraphError` can be converted directly to other
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12 //! existing Python exceptions if appropriate.
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13 //!
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14 //! [`GraphError`]: struct.GraphError.html
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15 use cpython::exc::{RuntimeError, ValueError};
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16 use cpython::{exc, PyErr, Python};
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17 use hg;
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18
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19 py_exception!(rustext, GraphError, ValueError);
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20
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21 impl GraphError {
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22 pub fn pynew(py: Python, inner: hg::GraphError) -> PyErr {
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23 match inner {
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24 hg::GraphError::ParentOutOfRange(r) => {
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25 GraphError::new(py, ("ParentOutOfRange", r))
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26 }
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27 hg::GraphError::WorkingDirectoryUnsupported => {
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28 match py
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29 .import("mercurial.error")
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30 .and_then(|m| m.get(py, "WdirUnsupported"))
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31 {
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32 Err(e) => e,
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33 Ok(cls) => PyErr::from_instance(py, cls),
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34 }
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35 }
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36 }
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37 }
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38 }
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39
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40 py_exception!(rustext, PatternError, RuntimeError);
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41 py_exception!(rustext, PatternFileError, RuntimeError);
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42
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43 impl PatternError {
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44 pub fn pynew(py: Python, inner: hg::PatternError) -> PyErr {
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45 match inner {
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46 hg::PatternError::UnsupportedSyntax(m) => {
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47 PatternError::new(py, ("PatternError", m))
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48 }
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49 }
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50 }
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51 }
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52
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53 impl PatternFileError {
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54 pub fn pynew(py: Python, inner: hg::PatternFileError) -> PyErr {
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55 match inner {
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56 hg::PatternFileError::IO(e) => {
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57 let value = (e.raw_os_error().unwrap_or(2), e.to_string());
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58 PyErr::new::<exc::IOError, _>(py, value)
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59 }
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60 hg::PatternFileError::Pattern(e, l) => match e {
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61 hg::PatternError::UnsupportedSyntax(m) => {
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62 PatternFileError::new(py, ("PatternFileError", m, l))
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63 }
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64 },
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65 }
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66 }
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67 }