This revision was automatically updated to reflect the committed changes. Closed by commit rHG3bf6979a1785: rust-cpython: generalised conversion function (authored by gracinet, committed by ).
REPOSITORY rHG Mercurial CHANGES SINCE LAST UPDATE https://phab.mercurial-scm.org/D5549?vs=13127&id=13173 REVISION DETAIL https://phab.mercurial-scm.org/D5549 AFFECTED FILES rust/hg-cpython/src/ancestors.rs CHANGE DETAILS diff --git a/rust/hg-cpython/src/ancestors.rs b/rust/hg-cpython/src/ancestors.rs --- a/rust/hg-cpython/src/ancestors.rs +++ b/rust/hg-cpython/src/ancestors.rs @@ -30,13 +30,18 @@ use hg::Revision; use hg::{AncestorsIterator as CoreIterator, LazyAncestors as CoreLazy}; use std::cell::RefCell; +use std::iter::FromIterator; -/// Utility function to convert a Python iterable into a Vec<Revision> +/// Utility function to convert a Python iterable into various collections /// -/// We need this to feed to `AncestorIterators` constructors because -/// a `PyErr` can arise at each step of iteration, whereas our inner objects +/// 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>` -fn reviter_to_revvec(py: Python, revs: PyObject) -> PyResult<Vec<Revision>> { +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() @@ -64,7 +69,7 @@ def __new__(_cls, index: PyObject, initrevs: PyObject, stoprev: Revision, inclusive: bool) -> PyResult<AncestorsIterator> { - let initvec = reviter_to_revvec(py, initrevs)?; + let initvec: Vec<Revision> = rev_pyiter_collect(py, &initrevs)?; let ait = CoreIterator::new( Index::new(py, index)?, initvec, @@ -103,7 +108,7 @@ def __new__(_cls, index: PyObject, initrevs: PyObject, stoprev: Revision, inclusive: bool) -> PyResult<Self> { - let initvec = reviter_to_revvec(py, initrevs)?; + let initvec: Vec<Revision> = rev_pyiter_collect(py, &initrevs)?; let lazy = CoreLazy::new(Index::new(py, index)?, initvec, stoprev, inclusive) To: gracinet, #hg-reviewers Cc: durin42, kevincox, mercurial-devel _______________________________________________ Mercurial-devel mailing list Mercurial-devel@mercurial-scm.org https://www.mercurial-scm.org/mailman/listinfo/mercurial-devel
