Mercurial > hg
view rust/hg-cpython/src/exceptions.rs @ 41694:0c7b353ce100
rust-cpython: binding for headrevs()
This uses the core `dagops::retain_heads` to give a Rust implementation
to `mercurial.dagop.headrevs`.
Testing happens for now from `test-rust-ancestors.py`
(for quick and minimal change), but it'd made more sense to put the binary
index data elsewhere and to create a new test python module
author | Georges Racinet <georges.racinet@octobus.net> |
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date | Thu, 10 Jan 2019 18:25:18 +0100 |
parents | ee943a920606 |
children | 94f3a73b6672 |
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// ancestors.rs // // Copyright 2018 Georges Racinet <gracinet@anybox.fr> // // This software may be used and distributed according to the terms of the // GNU General Public License version 2 or any later version. //! Bindings for Rust errors //! //! [`GraphError`] exposes `hg::GraphError` as a subclass of `ValueError` //! but some variants of `hg::GraphError` can be converted directly to other //! existing Python exceptions if appropriate. //! //! [`GraphError`]: struct.GraphError.html use cpython::exc::ValueError; use cpython::{PyErr, Python}; use hg; py_exception!(rustext, GraphError, ValueError); impl GraphError { pub fn pynew(py: Python, inner: hg::GraphError) -> PyErr { match inner { hg::GraphError::ParentOutOfRange(r) => { GraphError::new(py, ("ParentOutOfRange", r)) } hg::GraphError::WorkingDirectoryUnsupported => { match py .import("mercurial.error") .and_then(|m| m.get(py, "WdirUnsupported")) { Err(e) => e, Ok(cls) => PyErr::from_instance(py, cls), } } } } }