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annotate rust/hg-cpython/src/exceptions.rs @ 52167:7be39c5110c9

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hg-core: add a complete VFS This will be used from Python in a later change. More changes are needed in hg-core and rhg to properly clean up the APIs of the old VFS implementation but it can be done when the dust settles and we start adding more functionality to the pure Rust VFS.
author Rapha?l Gom?s <rgomes@octobus.net>
date Mon, 29 Jul 2024 20:47:43 +0200
parents 4c5f6e95df84
children 2fb13c3f4496
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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 use crate::PyRevision;
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22
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23 py_exception!(rustext, GraphError, ValueError);
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24
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25 impl GraphError {
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26 pub fn pynew(py: Python, inner: hg::GraphError) -> PyErr {
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27 match inner {
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28 hg::GraphError::ParentOutOfRange(r) => {
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29 GraphError::new(py, ("ParentOutOfRange", PyRevision(r.0)))
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30 }
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31 }
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32 }
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33
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34 pub fn pynew_from_vcsgraph(
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35 py: Python,
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36 inner: vcsgraph::graph::GraphReadError,
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37 ) -> PyErr {
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38 match inner {
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39 vcsgraph::graph::GraphReadError::InconsistentGraphData => {
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40 GraphError::new(py, "InconsistentGraphData")
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41 }
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42 vcsgraph::graph::GraphReadError::InvalidKey => {
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43 GraphError::new(py, "ParentOutOfRange")
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44 }
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45 vcsgraph::graph::GraphReadError::KeyedInvalidKey(r) => {
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46 GraphError::new(py, ("ParentOutOfRange", r))
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47 }
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48 vcsgraph::graph::GraphReadError::WorkingDirectoryUnsupported => {
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49 match py
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50 .import("mercurial.error")
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51 .and_then(|m| m.get(py, "WdirUnsupported"))
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52 {
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53 Err(e) => e,
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54 Ok(cls) => PyErr::from_instance(py, cls),
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55 }
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56 }
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57 }
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58 }
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59 }
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60
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61 py_exception!(rustext, HgPathPyError, RuntimeError);
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62 py_exception!(rustext, FallbackError, RuntimeError);
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63 py_exception!(shared_ref, AlreadyBorrowed, RuntimeError);