| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // This file is a clone of "base/optional.h" in chromium. |
| // Keep in sync, especially when fixing bugs. |
| // Copyright 2017 the V8 project authors. All rights reserved. |
| |
| #ifndef V8_BASE_OPTIONAL_H_ |
| #define V8_BASE_OPTIONAL_H_ |
| |
| #include <optional> |
| |
| namespace v8 { |
| namespace base { |
| |
| // These aliases are deprecated, use std::optional directly. |
| template <typename T> |
| using Optional [[deprecated]] = std::optional<T>; |
| |
| using std::in_place; |
| using std::make_optional; |
| using std::nullopt; |
| using std::nullopt_t; |
| |
| } // namespace base |
| } // namespace v8 |
| |
| #endif // V8_BASE_OPTIONAL_H_ |
