Unify walk_precise_capturing_arg

Author: maxcabrajac

compiler/rustc_ast/src/visitors.rs

@@ -916,6 +916,22 @@ macro_rules! make_ast_visitor {
             return_result!(V)
         }
 
+        pub fn walk_precise_capturing_arg<$($lt,)? V: $trait$(<$lt>)?>(
+            vis: &mut V,
+            arg: ref_t!(PreciseCapturingArg)
+        ) -> result!(V) {
+            match arg {
+                PreciseCapturingArg::Lifetime(lt) => {
+                    try_v!(vis.visit_lifetime(lt, LifetimeCtxt::GenericArg));
+                }
+                PreciseCapturingArg::Arg(path, id) => {
+                    try_v!(visit_id!(vis, id));
+                    try_v!(vis.visit_path(path, *id));
+                }
+            }
+            return_result!(V)
+        }
+
         make_walk_flat_map!{Arm, walk_flat_map_arm, visit_arm}
         make_walk_flat_map!{Attribute, walk_flat_map_attribute, visit_attribute}
         make_walk_flat_map!{ExprField, walk_flat_map_expr_field, visit_expr_field}
@@ -1327,20 +1343,6 @@ pub mod visit {
         }
     }
 
-    pub fn walk_precise_capturing_arg<'a, V: Visitor<'a>>(
-        visitor: &mut V,
-        arg: &'a PreciseCapturingArg,
-    ) {
-        match arg {
-            PreciseCapturingArg::Lifetime(lt) => {
-                visitor.visit_lifetime(lt, LifetimeCtxt::GenericArg);
-            }
-            PreciseCapturingArg::Arg(path, id) => {
-                visitor.visit_path(path, *id);
-            }
-        }
-    }
-
     pub fn walk_generic_param<'a, V: Visitor<'a>>(
         visitor: &mut V,
         param: &'a GenericParam,
@@ -2210,18 +2212,6 @@ pub mod mut_visit {
         }
     }
 
-    fn walk_precise_capturing_arg<T: MutVisitor>(vis: &mut T, arg: &mut PreciseCapturingArg) {
-        match arg {
-            PreciseCapturingArg::Lifetime(lt) => {
-                vis.visit_lifetime(lt, LifetimeCtxt::GenericArg);
-            }
-            PreciseCapturingArg::Arg(path, id) => {
-                vis.visit_id(id);
-                vis.visit_path(path, *id);
-            }
-        }
-    }
-
     pub fn walk_generic_param<T: MutVisitor>(vis: &mut T, param: &mut GenericParam) {
         let GenericParam { id, ident, attrs, bounds, kind, colon_span, is_placeholder: _ } = param;
         vis.visit_id(id);