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| Rev | Author | Line No. | Line | 
|---|---|---|---|
| 14 | pmbaty | 1 | //===- Optional.h - Simple variant for passing optional values --*- C++ -*-===// | 
| 2 | // | ||
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. | ||
| 4 | // See https://llvm.org/LICENSE.txt for license information. | ||
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | ||
| 6 | // | ||
| 7 | //===----------------------------------------------------------------------===// | ||
| 8 | /// | ||
| 9 | /// \file | ||
| 10 | ///  This file provides Optional, a template class modeled in the spirit of | ||
| 11 | ///  OCaml's 'opt' variant.  The idea is to strongly type whether or not | ||
| 12 | ///  a value can be optional. | ||
| 13 | /// | ||
| 14 | //===----------------------------------------------------------------------===// | ||
| 15 | |||
| 16 | #ifndef LLVM_ADT_OPTIONAL_H | ||
| 17 | #define LLVM_ADT_OPTIONAL_H | ||
| 18 | |||
| 19 | #include <optional> | ||
| 20 | |||
| 21 | namespace llvm { | ||
| 22 | // Legacy alias of llvm::Optional to std::optional. | ||
| 23 | // FIXME: Remove this after LLVM 16. | ||
| 24 | template <class T> using Optional = std::optional<T>; | ||
| 25 | } // namespace llvm | ||
| 26 | |||
| 27 | #endif // LLVM_ADT_OPTIONAL_H |