Return MaybeHandle from Invoke.

src/accessors.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 206 matching lines @@
         isolate, result,
         JSObject::SetLocalPropertyIgnoreAttributes(
             object, isolate->factory()->length_string(), value, NONE));
     return *result;
   }
 
   value = FlattenNumber(isolate, value);
 
   Handle<JSArray> array_handle = Handle<JSArray>::cast(object);
 
-  bool has_exception;
-  Handle<Object> uint32_v =
-      Execution::ToUint32(isolate, value, &has_exception);
-  if (has_exception) return Failure::Exception();
-  Handle<Object> number_v =
-      Execution::ToNumber(isolate, value, &has_exception);
-  if (has_exception) return Failure::Exception();
+  Handle<Object> uint32_v;
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+      isolate, uint32_v, Execution::ToUint32(isolate, value));
+  Handle<Object> number_v;
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+      isolate, number_v, Execution::ToNumber(isolate, value));
 
   if (uint32_v->Number() == number_v->Number()) {
     Handle<Object> result;
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
         isolate, result,
         JSArray::SetElementsLength(array_handle, uint32_v));
     return *result;
   }
   return isolate->Throw(
       *isolate->factory()->NewRangeError("invalid_array_length",
@@ skipping 765 matching lines @@
   info->set_data(Smi::FromInt(index));
   Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport);
   Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport);
   info->set_getter(*getter);
   if (!(attributes & ReadOnly)) info->set_setter(*setter);
   return info;
 }
 
 
 } }  // namespace v8::internal