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expand iter_projections comment

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Ralf Jung 2020-11-28 18:02:12 +01:00
parent 571da2c62d
commit 0bb82c4a05
1 changed files with 4 additions and 0 deletions
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compiler/rustc_middle/src/mir/mod.rs
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@ -1744,6 +1744,10 @@ pub fn as_ref(&self) -> PlaceRef<'tcx> {
/// Iterate over the projections in evaluation order, i.e., the first element is the base with /// Iterate over the projections in evaluation order, i.e., the first element is the base with
/// its projection and then subsequently more projections are added. /// its projection and then subsequently more projections are added.
/// As a concrete example, given the place a.b.c, this would yield:
/// - (a, .b)
/// - (a.b, .c)
/// Given a place without projections, the iterator is empty.
pub fn iter_projections( pub fn iter_projections(
self, self,
) -> impl Iterator<Item = (PlaceRef<'tcx>, PlaceElem<'tcx>)> + DoubleEndedIterator { ) -> impl Iterator<Item = (PlaceRef<'tcx>, PlaceElem<'tcx>)> + DoubleEndedIterator {