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annotate rust/hg-cpython/src/exceptions.rs @ 48556:35ebe6f824be

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hg-cpython: use ancestor iterator impls from vcsgraph Differential Revision: https://phab.mercurial-scm.org/D11947
author pacien <pacien.trangirard@pacien.net>
date Tue, 16 Nov 2021 18:54:05 +0100
parents f96b28aa4b79
children 3aca98a35727
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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::{
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16 exc::{RuntimeError, ValueError},
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17 py_exception, PyErr, Python,
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18 };
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19 use hg;
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20
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21 py_exception!(rustext, GraphError, ValueError);
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22
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23 impl GraphError {
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24 pub fn pynew(py: Python, inner: hg::GraphError) -> PyErr {
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25 match inner {
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26 hg::GraphError::ParentOutOfRange(r) => {
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27 GraphError::new(py, ("ParentOutOfRange", r))
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28 }
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29 hg::GraphError::WorkingDirectoryUnsupported => {
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30 match py
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31 .import("mercurial.error")
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32 .and_then(|m| m.get(py, "WdirUnsupported"))
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33 {
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34 Err(e) => e,
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35 Ok(cls) => PyErr::from_instance(py, cls),
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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
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41 pub fn pynew_from_vcsgraph(
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42 py: Python,
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43 inner: vcsgraph::graph::GraphReadError,
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44 ) -> PyErr {
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45 match inner {
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46 vcsgraph::graph::GraphReadError::InconsistentGraphData => {
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47 GraphError::new(py, "InconsistentGraphData")
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48 }
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49 vcsgraph::graph::GraphReadError::InvalidKey => {
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50 GraphError::new(py, "ParentOutOfRange")
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51 }
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52 vcsgraph::graph::GraphReadError::KeyedInvalidKey(r) => {
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53 GraphError::new(py, ("ParentOutOfRange", r))
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54 }
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55 vcsgraph::graph::GraphReadError::WorkingDirectoryUnsupported => {
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56 match py
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57 .import("mercurial.error")
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58 .and_then(|m| m.get(py, "WdirUnsupported"))
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59 {
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60 Err(e) => e,
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61 Ok(cls) => PyErr::from_instance(py, cls),
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62 }
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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
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68 py_exception!(rustext, HgPathPyError, RuntimeError);
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69 py_exception!(rustext, FallbackError, RuntimeError);
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70 py_exception!(shared_ref, AlreadyBorrowed, RuntimeError);