bjoernager/rust
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address review

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This commit is contained in:
b-naber 2022-12-09 18:08:56 +01:00
parent dc93a28e98
commit ff41359e65
4 changed files with 61 additions and 92 deletions
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9
compiler/rustc_middle/src/mir/syntax.rs
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@ -875,6 +875,13 @@ pub struct Place<'tcx> {
pub projection: &'tcx List<PlaceElem<'tcx>>,
}
/// The different kinds of projections that can be used in the projection of a `Place`.
///
/// `T1` is the generic type for a field projection. For an actual projection on a `Place`
/// this parameter will always be `Ty`, but the field type can be unavailable when
/// building (by using `PlaceBuilder`) places that correspond to upvars.
/// `T2` is the generic type for an `OpaqueCast` (is generic since it's abstracted over
/// in dataflow analysis, see `AbstractElem`).
#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[derive(TyEncodable, TyDecodable, HashStable, TypeFoldable, TypeVisitable)]
pub enum ProjectionElem<V, T1, T2> {
@ -942,7 +949,7 @@ pub enum ProjectionElem<V, T1, T2> {
/// and the index is a local.
pub type PlaceElem<'tcx> = ProjectionElem<Local, Ty<'tcx>, Ty<'tcx>>;
/// Alias for projections that appear in `PlaceBuilder::UpVar`, for which
/// Alias for projections that appear in `PlaceBuilder::Upvar`, for which
/// we cannot provide any field types.
pub type UpvarProjectionElem<'tcx> = ProjectionElem<Local, (), Ty<'tcx>>;