upstream/mercurial-mirror Files · rust/hg-cpython/src/conversion.rs

rhg: add support for narrow clones and sparse checkouts...

rhg: add support for narrow clones and sparse checkouts This adds a minimal support that can be implemented without parsing the narrowspec. We can parse the narrowspec and add support for more operations later. The reason we need so few code changes is as follows: Most operations need no special treatment of sparse because some of them only read dirstate (`rhg files` without `-r`), which bakes in the filtering, some of them only read store (`rhg files -r`, `rhg cat`), and some of them read no data at all (`rhg root`, `rhg debugrequirements`). `status` is the command that might care about sparse, so we just disable rhg on it. For narrow clones, `rhg files` clearly needs the narrowspec to work correctly, so we fall back. `rhg cat` seems to work consistently with `hg cat` if the file exists. If the file is hidden by narrow spec, the error message is different and confusing, so that's something that we should improve in follow-up patches. Differential Revision: https://phab.mercurial-scm.org/D11764

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             conversion.rs
        
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                | application/rls-services+xml
            
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        Georges Racinet
    
rust-cpython: moved generic conversion fn out of ancestors module...

              r41276
            
      // conversion.rs

      //

      // Copyright 2019 Georges Racinet <georges.racinet@octobus.net>

      //

      // 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 the hg::ancestors module provided by the

      //! `hg-core` crate. From Python, this will be seen as `rustext.ancestor`

        Georges Racinet
    
rust-cpython: removed now useless py_set() conversion...

              r43563
            
      use cpython::{ObjectProtocol, PyObject, PyResult, Python};

        Georges Racinet
    
rust-cpython: moved generic conversion fn out of ancestors module...

              r41276
            
      use hg::Revision;

      use std::iter::FromIterator;

      /// Utility function to convert a Python iterable into various collections

      ///

      /// We need this in particular to feed to various methods of inner objects

      /// with `impl IntoIterator<Item=Revision>` arguments, because

      /// a `PyErr` can arise at each step of iteration, whereas these methods

      /// expect iterables over `Revision`, not over some `Result<Revision, PyErr>`

      pub fn rev_pyiter_collect<C>(py: Python, revs: &PyObject) -> PyResult<C>

      where

          C: FromIterator<Revision>,

      {

          revs.iter(py)?

              .map(|r| r.and_then(|o| o.extract::<Revision>(py)))

              .collect()

      }

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Georges Racinet rust-cpython: moved generic conversion fn out of ancestors module...	r41276	// conversion.rs
		//
		// Copyright 2019 Georges Racinet <georges.racinet@octobus.net>
		//
		// 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 the hg::ancestors module provided by the
		//! `hg-core` crate. From Python, this will be seen as `rustext.ancestor`

Georges Racinet rust-cpython: removed now useless py_set() conversion...	r43563	use cpython::{ObjectProtocol, PyObject, PyResult, Python};
Georges Racinet rust-cpython: moved generic conversion fn out of ancestors module...	r41276	use hg::Revision;
		use std::iter::FromIterator;

		/// Utility function to convert a Python iterable into various collections
		///
		/// We need this in particular to feed to various methods of inner objects
		/// with `impl IntoIterator<Item=Revision>` arguments, because
		/// a `PyErr` can arise at each step of iteration, whereas these methods
		/// expect iterables over `Revision`, not over some `Result<Revision, PyErr>`
		pub fn rev_pyiter_collect<C>(py: Python, revs: &PyObject) -> PyResult<C>
		where
		C: FromIterator<Revision>,
		{
		revs.iter(py)?
		.map(\|r\| r.and_then(\|o\| o.extract::<Revision>(py)))
		.collect()
		}