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annotate rust/hg-pyo3/src/exceptions.rs @ 52780:42b219a1404a

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rust-pyo3-revlog: InnerRevlog definition and constructor We felt that the `mmap_keeparound` naming was after all inappropriate: - it does nothing to keep the data alive. Instead, it requires the caller to keep it alive. - using it for mmap'ed data is certainly the main use case, but more generally, it is about extracting any Python buffer for direct usage as a bytes slice. Everything else is rather straightforward. This object has several layers of inner mutability, like its progenitor in `hg-cpython`.
author Georges Racinet <georges.racinet@cloudcrane.io>
date Wed, 25 Dec 2024 13:29:56 +0100
parents 32008b1e7104
children 918239b55b3a
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1 use pyo3::exceptions::{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 crate::revision::PyRevision;
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6
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7 create_exception!(pyo3_rustext, GraphError, PyValueError);
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8 import_exception!(mercurial.error, WdirUnsupported);
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9
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10 impl GraphError {
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11 pub fn from_hg(inner: hg::GraphError) -> PyErr {
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12 match inner {
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13 hg::GraphError::ParentOutOfRange(r) => {
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14 GraphError::new_err(("ParentOutOfRange", PyRevision(r.0)))
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15 }
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16 hg::GraphError::ParentOutOfOrder(r) => {
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17 GraphError::new_err(("ParentOutOfOrder", PyRevision(r.0)))
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18 }
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19 }
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20 }
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21 pub fn from_vcsgraph(inner: vcsgraph::graph::GraphReadError) -> PyErr {
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22 match inner {
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23 vcsgraph::graph::GraphReadError::InconsistentGraphData => {
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24 GraphError::new_err("InconsistentGraphData")
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25 }
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26 vcsgraph::graph::GraphReadError::InvalidKey => {
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27 GraphError::new_err("ParentOutOfRange")
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28 }
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29 vcsgraph::graph::GraphReadError::KeyedInvalidKey(r) => {
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30 GraphError::new_err(("ParentOutOfRange", r))
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31 }
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32 vcsgraph::graph::GraphReadError::WorkingDirectoryUnsupported => {
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33 WdirUnsupported::new_err(())
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34 }
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35 }
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36 }
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37 }
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39 pub fn map_lock_error<T>(e: std::sync::PoisonError<T>) -> PyErr {
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40 PyRuntimeError::new_err(format!("In Rust PyO3 bindings: {e}"))
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41 }
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43 /// Submodule to hold Mercurial errors defined on the Python side
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44 ///
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45 /// This is better for clarity, as many hg-core errors have the same names
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46 /// as their Python world counterparts
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47 pub mod mercurial_py_errors {
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48 pyo3::import_exception!(mercurial.error, RevlogError);
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49 }
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50
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51 pub fn revlog_error_from_msg(e: impl ToString) -> PyErr {
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52 mercurial_py_errors::RevlogError::new_err(e.to_string().into_bytes())
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53 }