std_optional.hpp

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// # This file is a part of toml++ and is subject to the the terms of the MIT license.
// # Copyright (c) Mark Gillard <mark.gillard@outlook.com.au>
// # See https://github.com/marzer/tomlplusplus/blob/master/LICENSE for the full license text.
//  SPDX-License-Identifier: MIT
#pragma once
 
#include "preprocessor.hpp"
TOML_DISABLE_WARNINGS;
#if !TOML_HAS_CUSTOM_OPTIONAL_TYPE
#include <optional>
#endif
TOML_ENABLE_WARNINGS;
 
TOML_NAMESPACE_START {
#if TOML_HAS_CUSTOM_OPTIONAL_TYPE
 
  template <typename T>
  using optional = TOML_OPTIONAL_TYPE<T>;
 
#else
 
  template <typename T>
  using optional = std::optional<T>;
 
#endif
}
TOML_NAMESPACE_END;