Return MaybeHandle from GetProperty.

src/runtime.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 10792 matching lines @@
       }
       return value;
     }
     case CONSTANT:
       return result->GetConstant();
     case CALLBACKS: {
       Object* structure = result->GetCallbackObject();
       if (structure->IsForeign() || structure->IsAccessorInfo()) {
         Isolate* isolate = heap->isolate();
         HandleScope scope(isolate);
-        Handle<Object> value = JSObject::GetPropertyWithCallback(
+        MaybeHandle<Object> maybe_value = JSObject::GetPropertyWithCallback(
             handle(result->holder(), isolate),
             handle(receiver, isolate),
             handle(structure, isolate),
             handle(name, isolate));
-        if (value.is_null()) {
-          MaybeObject* exception = heap->isolate()->pending_exception();
-          heap->isolate()->clear_pending_exception();
-          if (caught_exception != NULL) *caught_exception = true;
-          return exception;
-        }
-        return *value;
+        Handle<Object> value;
+        if (maybe_value.ToHandle(&value)) return *value;
+        MaybeObject* exception = heap->isolate()->pending_exception();
+        heap->isolate()->clear_pending_exception();
+        if (caught_exception != NULL) *caught_exception = true;
+        return exception;
       } else {
         return heap->undefined_value();
       }
     }
     case INTERCEPTOR:
       return heap->undefined_value();
     case HANDLER:
     case NONEXISTENT:
       UNREACHABLE();
       return heap->undefined_value();
@@ skipping 162 matching lines @@
 // args[0]: object
 // args[1]: property name
 RUNTIME_FUNCTION(MaybeObject*, Runtime_DebugNamedInterceptorPropertyValue) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, obj, 0);
   RUNTIME_ASSERT(obj->HasNamedInterceptor());
   CONVERT_ARG_HANDLE_CHECKED(Name, name, 1);
 
   PropertyAttributes attributes;
-  Handle<Object> result =
-      JSObject::GetPropertyWithInterceptor(obj, obj, name, &attributes);
-  RETURN_IF_EMPTY_HANDLE(isolate, result);
+  Handle<Object> result;
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+      isolate, result,
+      JSObject::GetPropertyWithInterceptor(obj, obj, name, &attributes));
   return *result;
 }
 
 
 // Return element value from indexed interceptor.
 // args[0]: object
 // args[1]: index
 RUNTIME_FUNCTION(MaybeObject*, Runtime_DebugIndexedInterceptorElementValue) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 2);
@@ skipping 4205 matching lines @@
   }
 }
 
 
 void Runtime::OutOfMemory() {
   Heap::FatalProcessOutOfMemory("CALL_AND_RETRY_LAST", true);
   UNREACHABLE();
 }
 
 } }  // namespace v8::internal