From: Michael Wright <mikerite@lavabit.com>
Date: Sat, 28 Jul 2018 08:42:21 +0000 (+0200)
Subject: Add `use_self` comment
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=d7ddb2abba435aae10d4357ae299876795749265;p=rust.git

Add `use_self` comment
---

diff --git a/clippy_lints/src/use_self.rs b/clippy_lints/src/use_self.rs
index 8c633423cf6..79da4c7d288 100644
--- a/clippy_lints/src/use_self.rs
+++ b/clippy_lints/src/use_self.rs
@@ -130,6 +130,10 @@ fn check_trait_method_impl_decl<'a, 'tcx: 'a>(
         None
     };
 
+    // `impl_decl_ty` (of type `hir::Ty`) represents the type declared in the signature.
+    // `impl_ty` (of type `ty:TyS`) is the concrete type that the compiler has determined for
+    // that declaration.  We use `impl_decl_ty` to see if the type was declared as `Self`
+    // and use `impl_ty` to check its concrete type.
     for (impl_decl_ty, (impl_ty, trait_ty)) in impl_decl.inputs.iter().chain(output_ty).zip(
         impl_method_sig
             .inputs_and_output