BoolOrDefault.h

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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_ADT_BOOLORDEFAULT_H
#define LLVM_ADT_BOOLORDEFAULT_H
 
#include <cstdint>
 
namespace llvm {
 
// A bool, or Default when the caller's default applies. Unlike
// std::optional<bool>, it does not convert to bool.
enum class BoolOrDefault : uint8_t { Default, False, True };
 
// Like std::optional<bool>::value_or.
constexpr bool valueOr(BoolOrDefault X, bool Default) {
  return X == BoolOrDefault::Default ? Default : X == BoolOrDefault::True;
}
 
} // namespace llvm
 
#endif // LLVM_ADT_BOOLORDEFAULT_H