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annotate rust/hg-cpython/src/utils.rs @ 48674:f7086f6173f8 stable

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dirstate-v2: rename the configuration to enable the format The rename of the old experimental name was overlooked before the 6.0 release. We rename everything to use the new name (and keep the released name as an alias for compatibility). Differential Revision: https://phab.mercurial-scm.org/D12129
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 01 Feb 2022 16:36:20 +0100
parents 26114bd6ec60
children c7fb9b74e753
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 use cpython::exc::ValueError;
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2 use cpython::{PyBytes, PyDict, PyErr, PyObject, PyResult, PyTuple, Python};
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3 use hg::revlog::Node;
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4 use std::convert::TryFrom;
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5
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6 #[allow(unused)]
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7 pub fn print_python_trace(py: Python) -> PyResult<PyObject> {
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8 eprintln!("===============================");
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9 eprintln!("Printing Python stack from Rust");
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10 eprintln!("===============================");
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11 let traceback = py.import("traceback")?;
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12 let sys = py.import("sys")?;
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13 let kwargs = PyDict::new(py);
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14 kwargs.set_item(py, "file", sys.get(py, "stderr")?)?;
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15 traceback.call(py, "print_stack", PyTuple::new(py, &[]), Some(&kwargs))
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16 }
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18 // Necessary evil for the time being, could maybe be moved to
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19 // a TryFrom in Node itself
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20 const NODE_BYTES_LENGTH: usize = 20;
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21 type NodeData = [u8; NODE_BYTES_LENGTH];
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22
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23 /// Copy incoming Python bytes given as `PyObject` into `Node`,
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24 /// doing the necessary checks
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25 pub fn node_from_py_object<'a>(
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26 py: Python,
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27 bytes: &'a PyObject,
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28 ) -> PyResult<Node> {
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29 let as_py_bytes: &'a PyBytes = bytes.extract(py)?;
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30 node_from_py_bytes(py, as_py_bytes)
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31 }
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32
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33 /// Clone incoming Python bytes given as `PyBytes` as a `Node`,
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34 /// doing the necessary checks.
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35 pub fn node_from_py_bytes(py: Python, bytes: &PyBytes) -> PyResult<Node> {
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36 <NodeData>::try_from(bytes.data(py))
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37 .map_err(|_| {
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38 PyErr::new::<ValueError, _>(
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39 py,
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40 format!("{}-byte hash required", NODE_BYTES_LENGTH),
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41 )
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42 })
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43 .map(Into::into)
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44 }