| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03, c++11, c++14, c++17 |
| // UNSUPPORTED: libcpp-has-no-incomplete-format |
| |
| // libc++ supports basic_format_string in C++20 as an extension |
| // UNSUPPORTED: !stdlib=libc++ && c++20 |
| |
| // <format> |
| |
| // template<class charT, class... Args> |
| // class basic_format_string<charT, type_identity_t<Args>...> |
| // |
| // constexpr basic_string_view<charT> get() const noexcept { return str; } |
| |
| #include <format> |
| |
| #include <cassert> |
| #include <concepts> |
| #include <string_view> |
| |
| #include "test_macros.h" |
| #include "make_string.h" |
| |
| #define CSTR(S) MAKE_CSTRING(CharT, S) |
| #define SV(S) MAKE_STRING_VIEW(CharT, S) |
| |
| template <class CharT> |
| constexpr bool test() { |
| assert((std::basic_format_string<CharT>{CSTR("foo")}.get() == SV("foo"))); |
| assert((std::basic_format_string<CharT, int>{CSTR("{}")}.get() == SV("{}"))); |
| assert((std::basic_format_string<CharT, int, char>{CSTR("{} {:*>6}")}.get() == SV("{} {:*>6}"))); |
| |
| // Embedded NUL character |
| assert((std::basic_format_string<CharT, void*, bool>{SV("{}\0{}")}.get() == SV("{}\0{}"))); |
| return true; |
| } |
| |
| int main(int, char**) { |
| test<char>(); |
| static_assert(test<char>()); |
| #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
| test<wchar_t>(); |
| static_assert(test<wchar_t>()); |
| #endif |
| return 0; |
| } |