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| author | Santiago Pastorino <spastorino@gmail.com> | 2022-08-04 12:47:19 -0300 |
|---|---|---|
| committer | Santiago Pastorino <spastorino@gmail.com> | 2022-08-04 12:47:19 -0300 |
| commit | bf1c7da1476c8193a0e92262c3e4dd2d88392569 (patch) | |
| tree | 8a83a3b4247ec5dfc9eb5fe96e8a8af30947e31a | |
| parent | ece52451f6278bd4b3bdf02d82153ffb5c1b7f1d (diff) | |
| download | rust-bf1c7da1476c8193a0e92262c3e4dd2d88392569.tar.gz rust-bf1c7da1476c8193a0e92262c3e4dd2d88392569.zip | |
Improve record_def_id_remap docs
| -rw-r--r-- | compiler/rustc_ast_lowering/src/lib.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs index 49f5470d181..84388d3d653 100644 --- a/compiler/rustc_ast_lowering/src/lib.rs +++ b/compiler/rustc_ast_lowering/src/lib.rs @@ -210,7 +210,10 @@ impl ResolverAstLoweringExt for ResolverAstLowering { self.builtin_macro_kinds.get(&def_id).copied().unwrap_or(MacroKind::Bang) } - /// Push a remapping into the top-most map. Panics if no map has been pushed. + /// Push a remapping into the top-most map. + /// Panics if no map has been pushed. + /// Remapping is used when creating lowering `-> impl Trait` return + /// types to create the resulting opaque type. #[tracing::instrument(level = "debug", skip(self))] fn record_def_id_remap(&mut self, from: LocalDefId, to: LocalDefId) { self.generics_def_id_map.last_mut().expect("no map pushed").insert(from, to); |