Convert TypeVisitor and DefIdVisitor to use VisitorResult

compiler/rustc_middle/src/ty/mod.rs

@@ -33,7 +33,7 @@ pub use generics::*;
 pub use intrinsic::IntrinsicDef;
 use rustc_ast as ast;
 use rustc_ast::node_id::NodeMap;
-pub use rustc_ast_ir::{Movability, Mutability};
+pub use rustc_ast_ir::{try_visit, Movability, Mutability};
 use rustc_attr as attr;
 use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexMap, FxIndexSet};
 use rustc_data_structures::intern::Interned;
@@ -64,7 +64,6 @@ use std::hash::{Hash, Hasher};
 use std::marker::PhantomData;
 use std::mem;
 use std::num::NonZero;
-use std::ops::ControlFlow;
 use std::ptr::NonNull;
 use std::{fmt, str};
 
@@ -599,7 +598,7 @@ impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for Term<'tcx> {
 }
 
 impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for Term<'tcx> {
-    fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
+    fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> V::Result {
         self.unpack().visit_with(visitor)
     }
 }
@@ -1043,8 +1042,8 @@ impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for ParamEnv<'tcx> {
 }
 
 impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for ParamEnv<'tcx> {
-    fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
-        self.caller_bounds().visit_with(visitor)?;
+    fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> V::Result {
+        try_visit!(self.caller_bounds().visit_with(visitor));
         self.reveal().visit_with(visitor)
     }
 }