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annotate rust/hg-cpython/src/utils.rs @ 51967:69bfd6b242ed

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head-revs: merge the two inner_headrevs? variants Now that there is only one method, it does not make sense to have two different "inner" method. This is especially true as we are about to add another parameter to the method. So we clean up before that.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 27 Sep 2024 00:55:54 +0200
parents c7fb9b74e753
children 28a0eb21ff04
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
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5 #[allow(unused)]
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6 pub fn print_python_trace(py: Python) -> PyResult<PyObject> {
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7 eprintln!("===============================");
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8 eprintln!("Printing Python stack from Rust");
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9 eprintln!("===============================");
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10 let traceback = py.import("traceback")?;
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11 let sys = py.import("sys")?;
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12 let kwargs = PyDict::new(py);
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13 kwargs.set_item(py, "file", sys.get(py, "stderr")?)?;
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14 traceback.call(py, "print_stack", PyTuple::new(py, &[]), Some(&kwargs))
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15 }
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16
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17 // Necessary evil for the time being, could maybe be moved to
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18 // a TryFrom in Node itself
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19 const NODE_BYTES_LENGTH: usize = 20;
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20 type NodeData = [u8; NODE_BYTES_LENGTH];
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21
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22 /// Copy incoming Python bytes given as `PyObject` into `Node`,
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23 /// doing the necessary checks
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24 pub fn node_from_py_object<'a>(
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25 py: Python,
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26 bytes: &'a PyObject,
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27 ) -> PyResult<Node> {
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28 let as_py_bytes: &'a PyBytes = bytes.extract(py)?;
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29 node_from_py_bytes(py, as_py_bytes)
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30 }
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31
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32 /// Clone incoming Python bytes given as `PyBytes` as a `Node`,
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33 /// doing the necessary checks.
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34 pub fn node_from_py_bytes(py: Python, bytes: &PyBytes) -> PyResult<Node> {
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35 <NodeData>::try_from(bytes.data(py))
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36 .map_err(|_| {
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37 PyErr::new::<ValueError, _>(
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38 py,
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39 format!("{}-byte hash required", NODE_BYTES_LENGTH),
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40 )
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41 })
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42 .map(Into::into)
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43 }