from_chars_result.h 1.1 KB

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  1. // -*- C++ -*-
  2. //===----------------------------------------------------------------------===//
  3. //
  4. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  5. // See https://llvm.org/LICENSE.txt for license information.
  6. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  7. //
  8. //===----------------------------------------------------------------------===//
  9. #ifndef _LIBCPP___CHARCONV_FROM_CHARS_RESULT_H
  10. #define _LIBCPP___CHARCONV_FROM_CHARS_RESULT_H
  11. #include <__config>
  12. #include <__system_error/errc.h>
  13. #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  14. # pragma GCC system_header
  15. #endif
  16. _LIBCPP_BEGIN_NAMESPACE_STD
  17. #if _LIBCPP_STD_VER >= 17
  18. struct _LIBCPP_EXPORTED_FROM_ABI from_chars_result {
  19. const char* ptr;
  20. errc ec;
  21. # if _LIBCPP_STD_VER >= 20
  22. _LIBCPP_HIDE_FROM_ABI friend bool operator==(const from_chars_result&, const from_chars_result&) = default;
  23. # endif
  24. # if _LIBCPP_STD_VER >= 26
  25. _LIBCPP_HIDE_FROM_ABI constexpr explicit operator bool() const noexcept { return ec == errc{}; }
  26. # endif
  27. };
  28. #endif // _LIBCPP_STD_VER >= 17
  29. _LIBCPP_END_NAMESPACE_STD
  30. #endif // _LIBCPP___CHARCONV_FROM_CHARS_RESULT_H