CSE2410 Fall 2014 Bounce

static V8_INLINE bool CheckForName(Handle<String> name,

                                   String* property_name,

                                   int offset,

                                   int* object_offset) {

  if (name->Equals(property_name)) {

    *object_offset = offset;

    return true;

  }

  return false;

}

bool Accessors::IsJSObjectFieldAccessor(

      Handle<Map> map, Handle<String> name,

      int* object_offset) {

  Isolate* isolate = map->GetIsolate();

  switch (map->instance_type()) {

    case JS_ARRAY_TYPE:

      return

        CheckForName(name, isolate->heap()->length_string(),

                     JSArray::kLengthOffset, object_offset);

    case JS_TYPED_ARRAY_TYPE:

      return

        CheckForName(name, isolate->heap()->length_string(),

                     JSTypedArray::kLengthOffset, object_offset) ||

        CheckForName(name, isolate->heap()->byte_length_string(),

                     JSTypedArray::kByteLengthOffset, object_offset) ||

        CheckForName(name, isolate->heap()->byte_offset_string(),

                     JSTypedArray::kByteOffsetOffset, object_offset) ||

        CheckForName(name, isolate->heap()->buffer_string(),

                     JSTypedArray::kBufferOffset, object_offset);

    case JS_ARRAY_BUFFER_TYPE:

      return

        CheckForName(name, isolate->heap()->byte_length_string(),

                     JSArrayBuffer::kByteLengthOffset, object_offset);

    case JS_DATA_VIEW_TYPE:

      return

        CheckForName(name, isolate->heap()->byte_length_string(),

                     JSDataView::kByteLengthOffset, object_offset) ||

        CheckForName(name, isolate->heap()->byte_offset_string(),

                     JSDataView::kByteOffsetOffset, object_offset) ||

        CheckForName(name, isolate->heap()->buffer_string(),

                     JSDataView::kBufferOffset, object_offset);

    default: {

      if (map->instance_type() < FIRST_NONSTRING_TYPE) {

        return

          CheckForName(name, isolate->heap()->length_string(),

                       String::kLengthOffset, object_offset);

      }

      return false;

    }

  }

}