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// ancestors.rs
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//
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// Copyright 2018 Georges Racinet <gracinet@anybox.fr>
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//
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// This software may be used and distributed according to the terms of the
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// GNU General Public License version 2 or any later version.
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//! Bindings for Rust errors
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//!
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//! [`GraphError`] exposes `hg::GraphError` as a subclass of `ValueError`
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//! but some variants of `hg::GraphError` can be converted directly to other
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//! existing Python exceptions if appropriate.
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//!
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//! [`GraphError`]: struct.GraphError.html
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use cpython::{
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exc::{RuntimeError, ValueError},
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py_exception, PyErr, Python,
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};
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use hg;
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py_exception!(rustext, GraphError, ValueError);
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impl GraphError {
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pub fn pynew(py: Python, inner: hg::GraphError) -> PyErr {
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match inner {
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hg::GraphError::ParentOutOfRange(r) => {
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GraphError::new(py, ("ParentOutOfRange", r))
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}
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hg::GraphError::WorkingDirectoryUnsupported => {
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match py
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.import("mercurial.error")
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.and_then(|m| m.get(py, "WdirUnsupported"))
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{
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Err(e) => e,
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Ok(cls) => PyErr::from_instance(py, cls),
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}
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}
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}
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}
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}
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py_exception!(rustext, HgPathPyError, RuntimeError);
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py_exception!(rustext, FallbackError, RuntimeError);
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py_exception!(shared_ref, AlreadyBorrowed, RuntimeError);
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