1 //===----------------------------------------------------------------------===// 2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 3 // See https://llvm.org/LICENSE.txt for license information. 4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 5 // 6 //===----------------------------------------------------------------------===// 7 8 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20 9 // UNSUPPORTED: libcpp-has-no-incomplete-format 10 11 // This test requires the dylib support introduced in D92214. 12 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}} 13 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}} 14 15 // <vector> 16 17 // template<class T, class charT> 18 // requires is-vector-bool-reference<T> 19 // struct formatter<T, charT> 20 21 // template<class ParseContext> 22 // constexpr typename ParseContext::iterator 23 // parse(ParseContext& ctx); 24 25 // Note this tests the basics of this function. It's tested in more detail in 26 // the format functions test. 27 28 #include <cassert> 29 #include <concepts> 30 #include <format> 31 #include <vector> 32 33 #include "test_format_context.h" 34 #include "test_macros.h" 35 #include "make_string.h" 36 37 #define SV(S) MAKE_STRING_VIEW(CharT, S) 38 39 template <class StringViewT> 40 constexpr void test_parse(StringViewT fmt) { 41 using CharT = typename StringViewT::value_type; 42 auto parse_ctx = std::basic_format_parse_context<CharT>(fmt); 43 std::formatter<std::vector<bool, std::allocator<bool>>::reference, CharT> formatter; 44 static_assert(std::semiregular<decltype(formatter)>); 45 46 std::same_as<typename StringViewT::iterator> auto it = formatter.parse(parse_ctx); 47 assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}')); 48 } 49 50 template <class CharT> 51 constexpr void test_fmt() { 52 test_parse(SV("")); 53 test_parse(SV("b")); 54 55 test_parse(SV("}")); 56 test_parse(SV("b}")); 57 } 58 59 constexpr bool test() { 60 test_fmt<char>(); 61 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 62 test_fmt<wchar_t>(); 63 #endif 64 65 return true; 66 } 67 68 int main(int, char**) { 69 test(); 70 static_assert(test()); 71 72 return 0; 73 } 74