Mercurial > hg
view rust/hg-cpython/src/exceptions.rs @ 45610:496537c9c1b4
rust: start plugging the dirstate tree behind a feature gate
The previous patch added the `dirstate-tree` feature gate to enable the two
dirstate implementations to co-habit while the tree-based one gets better.
This patch copies over the code that differs, be it because the algorithm
changed or because the borrowing rules are different.
Indeed, `DirstateTree` is not observationally equivalent to the std `HashMap` in
the APIs we use: it does not have the `Entry` API (yet?) and its iterator
returns owned values instead of references. This last point is because the
implementation needs to be changed to a more clever and efficient solution.
Differential Revision: https://phab.mercurial-scm.org/D9133
author | Raphaël Gomès <rgomes@octobus.net> |
---|---|
date | Wed, 30 Sep 2020 18:10:29 +0200 |
parents | f96b28aa4b79 |
children | 35ebe6f824be |
line wrap: on
line source
// 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::{RuntimeError, ValueError}, py_exception, 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), } } } } } py_exception!(rustext, HgPathPyError, RuntimeError); py_exception!(rustext, FallbackError, RuntimeError); py_exception!(shared_ref, AlreadyBorrowed, RuntimeError);