1d23f609dSMark de Wever // -*- C++ -*- 2d23f609dSMark de Wever //===----------------------------------------------------------------------===// 3d23f609dSMark de Wever // 4d23f609dSMark de Wever // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5d23f609dSMark de Wever // See https://llvm.org/LICENSE.txt for license information. 6d23f609dSMark de Wever // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7d23f609dSMark de Wever // 8d23f609dSMark de Wever //===----------------------------------------------------------------------===// 9d23f609dSMark de Wever 10d23f609dSMark de Wever #ifndef SUPPORT_TEST_FORMAT_STRING_HPP 11d23f609dSMark de Wever #define SUPPORT_TEST_FORMAT_STRING_HPP 12d23f609dSMark de Wever 13d23f609dSMark de Wever #include <concepts> 14d23f609dSMark de Wever #include <format> 15d23f609dSMark de Wever #include <type_traits> 16d23f609dSMark de Wever 17d23f609dSMark de Wever #include "test_macros.h" 18d23f609dSMark de Wever 19d23f609dSMark de Wever #if TEST_STD_VER < 20 20d23f609dSMark de Wever # error "The format header requires at least C++20" 21d23f609dSMark de Wever #endif 22d23f609dSMark de Wever 23d23f609dSMark de Wever // Wrapper for basic_format_string. 24d23f609dSMark de Wever // 25d23f609dSMark de Wever // This layer of indirection is used since it's not possible to use 26d23f609dSMark de Wever // std::basic_format_string<CharT, Args...> in the test function directly. 27d23f609dSMark de Wever // 28d23f609dSMark de Wever // In C++20 the basic-format-string was an exposition only type. In C++23 is 29d23f609dSMark de Wever // has been replaced with basic_format_string. Both libc++ and MSVC STL offer 30d23f609dSMark de Wever // it as an extension in C++20. 31d23f609dSMark de Wever #if TEST_STD_VER > 20 || defined(_LIBCPP_VERSION) || defined(_MSVC_STL_VERSION) 32d23f609dSMark de Wever # ifndef TEST_HAS_NO_WIDE_CHARACTERS 33d23f609dSMark de Wever template <class CharT, class... Args> 34d23f609dSMark de Wever using test_format_string = 35d23f609dSMark de Wever std::conditional_t<std::same_as<CharT, char>, std::format_string<Args...>, std::wformat_string<Args...>>; 36d23f609dSMark de Wever # else 37d23f609dSMark de Wever template <class CharT, class... Args> 38d23f609dSMark de Wever using test_format_string = std::format_string<Args...>; 39d23f609dSMark de Wever # endif 40d23f609dSMark de Wever 41d23f609dSMark de Wever #else // TEST_STD_VER > 20 || defined(_LIBCPP_VERSION) || defined( _MSVC_STL_VERSION) 42d23f609dSMark de Wever 43*8cd5e672SMark de Wever # error \ 44*8cd5e672SMark de Wever "Please create a vendor specific version of the test typedef and file a PR at https://github.com/llvm/llvm-project" 45d23f609dSMark de Wever 46d23f609dSMark de Wever #endif // TEST_STD_VER > 20 || defined(_LIBCPP_VERSION) || defined( _MSVC_STL_VERSION) 47d23f609dSMark de Wever 48d23f609dSMark de Wever #endif // SUPPORT_TEST_FORMAT_STRING_HPP 49