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annotate rust/hg-pyo3/src/exceptions.rs @ 52857:e7b825893e1b

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rust-pyo3-dirsate: DirstateMap definition and constructors With rust-cpython, using `Option<T>` in the Rust signature would translate automatically into a Python keyword argument, leading to unpleasantness on the Rust side in some cases (not here, though). with PyO3, though the signature can be specified explicitly (positional in this case) and there is even a warning that the implicit keywords style is deprecated.
author Georges Racinet <georges.racinet@cloudcrane.io>
date Wed, 29 Jan 2025 14:05:26 +0100
parents c6707e112d96
children 9f083ff3c96c
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1 use pyo3::exceptions::{PyOSError, PyRuntimeError, PyValueError};
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2 use pyo3::import_exception;
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3 use pyo3::{create_exception, PyErr};
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4
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5 use hg::dirstate::{on_disk::DirstateV2ParseError, DirstateError};
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7 use hg::revlog::nodemap::NodeMapError;
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8 use hg::UncheckedRevision;
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10 use crate::revision::PyRevision;
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11
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12 create_exception!(pyo3_rustext, GraphError, PyValueError);
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13 create_exception!(pyo3_rustext, FallbackError, PyRuntimeError);
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14 import_exception!(mercurial.error, WdirUnsupported);
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15
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16 impl GraphError {
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17 pub fn from_hg(inner: hg::GraphError) -> PyErr {
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18 match inner {
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19 hg::GraphError::ParentOutOfRange(r) => {
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20 GraphError::new_err(("ParentOutOfRange", PyRevision(r.0)))
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21 }
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22 hg::GraphError::ParentOutOfOrder(r) => {
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23 GraphError::new_err(("ParentOutOfOrder", PyRevision(r.0)))
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24 }
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25 }
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26 }
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27 pub fn from_vcsgraph(inner: vcsgraph::graph::GraphReadError) -> PyErr {
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28 match inner {
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29 vcsgraph::graph::GraphReadError::InconsistentGraphData => {
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30 GraphError::new_err("InconsistentGraphData")
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31 }
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32 vcsgraph::graph::GraphReadError::InvalidKey => {
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33 GraphError::new_err("ParentOutOfRange")
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34 }
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35 vcsgraph::graph::GraphReadError::KeyedInvalidKey(r) => {
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36 GraphError::new_err(("ParentOutOfRange", r))
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37 }
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38 vcsgraph::graph::GraphReadError::WorkingDirectoryUnsupported => {
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39 WdirUnsupported::new_err(())
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40 }
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41 }
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42 }
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43 }
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44
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45 pub fn map_lock_error<T>(e: std::sync::PoisonError<T>) -> PyErr {
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46 PyRuntimeError::new_err(format!("In Rust PyO3 bindings: {e}"))
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47 }
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49 pub fn map_try_lock_error<T>(e: std::sync::TryLockError<T>) -> PyErr {
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50 PyRuntimeError::new_err(format!("In Rust PyO3 bindings: {e}"))
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51 }
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53 pub mod mercurial_py_errors {
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54 pyo3::import_exception!(mercurial.error, RevlogError);
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55 }
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56
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57 pub fn revlog_error_from_msg(e: impl ToString) -> PyErr {
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58 mercurial_py_errors::RevlogError::new_err(e.to_string().into_bytes())
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59 }
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60
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61 pub fn revlog_error_bare() -> PyErr {
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62 mercurial_py_errors::RevlogError::new_err((None::<String>,))
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63 }
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64
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65 pub fn rev_not_in_index(rev: UncheckedRevision) -> PyErr {
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66 PyValueError::new_err(format!("revlog index out of range: {}", rev))
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67 }
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68
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69 pub fn nodemap_error(err: NodeMapError) -> PyErr {
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70 match err {
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71 NodeMapError::MultipleResults => {
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72 mercurial_py_errors::RevlogError::new_err("")
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73 }
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74
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75 NodeMapError::RevisionNotInIndex(rev) => {
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76 PyValueError::new_err(format!(
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77 "Inconsistency: Revision {} found in nodemap \
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78 is not in revlog index",
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79 rev
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80 ))
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81 }
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82 }
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83 }
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84
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85 pub fn graph_error(_err: hg::GraphError) -> PyErr {
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86 // ParentOutOfRange is currently the only alternative
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87 // in `hg::GraphError`. The C index always raises this simple ValueError.
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88 PyValueError::new_err("parent out of range")
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89 }
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91 pub fn dirstate_error(err: DirstateError) -> PyErr {
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92 PyOSError::new_err(format!("Dirstate error: {:?}", err))
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93 }
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94
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95 #[allow(dead_code)]
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96 pub fn dirstate_v2_error(_err: DirstateV2ParseError) -> PyErr {
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97 PyValueError::new_err("corrupted dirstate-v2")
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98 }