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 10 #ifndef _LIBCPP___CHRONO_STATICALLY_WIDEN_H 11 #define _LIBCPP___CHRONO_STATICALLY_WIDEN_H 12 13 // Implements the STATICALLY-WIDEN exposition-only function. ([time.general]/2) 14 15 #include <__concepts/same_as.h> 16 #include <__config> 17 #include <__format/concepts.h> 18 19 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20 # pragma GCC system_header 21 #endif 22 23 _LIBCPP_BEGIN_NAMESPACE_STD 24 25 #if _LIBCPP_STD_VER >= 20 26 27 # ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 28 template <__fmt_char_type _CharT> 29 _LIBCPP_HIDE_FROM_ABI constexpr const _CharT* __statically_widen(const char* __str, const wchar_t* __wstr) { 30 if constexpr (same_as<_CharT, char>) 31 return __str; 32 else 33 return __wstr; 34 } 35 # define _LIBCPP_STATICALLY_WIDEN(_CharT, __str) ::std::__statically_widen<_CharT>(__str, L##__str) 36 # else // _LIBCPP_HAS_NO_WIDE_CHARACTERS 37 38 // Without this indirection the unit test test/libcxx/modules_include.sh.cpp 39 // fails for the CI build "No wide characters". This seems like a bug. 40 // TODO FMT investigate why this is needed. 41 template <__fmt_char_type _CharT> 42 _LIBCPP_HIDE_FROM_ABI constexpr const _CharT* __statically_widen(const char* __str) { 43 return __str; 44 } 45 # define _LIBCPP_STATICALLY_WIDEN(_CharT, __str) ::std::__statically_widen<_CharT>(__str) 46 # endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS 47 48 #endif //_LIBCPP_STD_VER >= 20 49 50 _LIBCPP_END_NAMESPACE_STD 51 52 #endif // _LIBCPP___CHRONO_STATICALLY_WIDEN_H 53