From 86a4009586a49eaa6797ed26eb4cf3f769d14080 Mon Sep 17 00:00:00 2001
From: Samuel Moelius <sam@moeli.us>
Date: Fri, 28 Oct 2022 10:36:42 -0400
Subject: [PATCH] Add `walk_generic_arg`

---
 compiler/rustc_hir/src/intravisit.rs | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/compiler/rustc_hir/src/intravisit.rs b/compiler/rustc_hir/src/intravisit.rs
index f3bde099b134f..573dd7af5a3f4 100644
--- a/compiler/rustc_hir/src/intravisit.rs
+++ b/compiler/rustc_hir/src/intravisit.rs
@@ -410,12 +410,7 @@ pub trait Visitor<'v>: Sized {
         walk_inf(self, inf);
     }
     fn visit_generic_arg(&mut self, generic_arg: &'v GenericArg<'v>) {
-        match generic_arg {
-            GenericArg::Lifetime(lt) => self.visit_lifetime(lt),
-            GenericArg::Type(ty) => self.visit_ty(ty),
-            GenericArg::Const(ct) => self.visit_anon_const(&ct.value),
-            GenericArg::Infer(inf) => self.visit_infer(inf),
-        }
+        walk_generic_arg(self, generic_arg);
     }
     fn visit_lifetime(&mut self, lifetime: &'v Lifetime) {
         walk_lifetime(self, lifetime)
@@ -480,6 +475,15 @@ pub fn walk_label<'v, V: Visitor<'v>>(visitor: &mut V, label: &'v Label) {
     visitor.visit_ident(label.ident);
 }
 
+pub fn walk_generic_arg<'v, V: Visitor<'v>>(visitor: &mut V, generic_arg: &'v GenericArg<'v>) {
+    match generic_arg {
+        GenericArg::Lifetime(lt) => visitor.visit_lifetime(lt),
+        GenericArg::Type(ty) => visitor.visit_ty(ty),
+        GenericArg::Const(ct) => visitor.visit_anon_const(&ct.value),
+        GenericArg::Infer(inf) => visitor.visit_infer(inf),
+    }
+}
+
 pub fn walk_lifetime<'v, V: Visitor<'v>>(visitor: &mut V, lifetime: &'v Lifetime) {
     visitor.visit_id(lifetime.hir_id);
     match lifetime.name {