| //===- Optional.h - Simple variant for passing optional values --*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// This file provides Optional, a template class modeled in the spirit of |
| /// OCaml's 'opt' variant. The idea is to strongly type whether or not |
| /// a value can be optional. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_ADT_OPTIONAL_H |
| #define LLVM_ADT_OPTIONAL_H |
| |
| #include <optional> |
| |
| namespace llvm { |
| // Legacy alias of llvm::Optional to std::optional. |
| // FIXME: Remove this after LLVM 16. |
| template <class T> using Optional = std::optional<T>; |
| } // namespace llvm |
| |
| #endif // LLVM_ADT_OPTIONAL_H |