| // -*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___CHRONO_OSTREAM_H |
| #define _LIBCPP___CHRONO_OSTREAM_H |
| |
| #include <__chrono/day.h> |
| #include <__chrono/statically_widen.h> |
| #include <__config> |
| #include <__format/format_functions.h> |
| #include <ostream> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT) |
| |
| namespace chrono { |
| |
| template <class _CharT, class _Traits> |
| _LIBCPP_HIDE_FROM_ABI _LIBCPP_AVAILABILITY_FORMAT basic_ostream<_CharT, _Traits>& |
| operator<<(basic_ostream<_CharT, _Traits>& __os, const day& __d) { |
| return __os |
| << (__d.ok() |
| ? std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:%d}"), __d) |
| // Note this error differs from the wording of the Standard. The |
| // Standard wording doesn't work well on AIX or Windows. There |
| // the formatted day seems to be either modulo 100 or completely |
| // omitted. Judging by the wording this is valid. |
| // TODO FMT Write a paper of file an LWG issue. |
| : std::format(_LIBCPP_STATICALLY_WIDEN(_CharT, "{:02} is not a valid day"), static_cast<unsigned>(__d))); |
| } |
| |
| } // namespace chrono |
| |
| #endif //if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT) |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___CHRONO_OSTREAM_H |
