diff options
Diffstat (limited to 'compiler/rustc_middle/src/ty/util.rs')
| -rw-r--r-- | compiler/rustc_middle/src/ty/util.rs | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/compiler/rustc_middle/src/ty/util.rs b/compiler/rustc_middle/src/ty/util.rs index 4feaeb0dd05..c674a868d9f 100644 --- a/compiler/rustc_middle/src/ty/util.rs +++ b/compiler/rustc_middle/src/ty/util.rs @@ -541,13 +541,15 @@ impl<'tcx> TyCtxt<'tcx> { Ok(()) } - /// Returns `true` if `def_id` refers to a closure (e.g., `|x| x * 2`). Note - /// that closures have a `DefId`, but the closure *expression* also - /// has a `HirId` that is located within the context where the - /// closure appears (and, sadly, a corresponding `NodeId`, since - /// those are not yet phased out). The parent of the closure's - /// `DefId` will also be the context where it appears. - pub fn is_closure_or_coroutine(self, def_id: DefId) -> bool { + /// Returns `true` if `def_id` refers to a closure, coroutine, or coroutine-closure + /// (i.e. an async closure). These are all represented by `hir::Closure`, and all + /// have the same `DefKind`. + /// + /// Note that closures have a `DefId`, but the closure *expression* also has a + // `HirId` that is located within the context where the closure appears (and, sadly, + // a corresponding `NodeId`, since those are not yet phased out). The parent of + // the closure's `DefId` will also be the context where it appears. + pub fn is_closure_like(self, def_id: DefId) -> bool { matches!(self.def_kind(def_id), DefKind::Closure) } |