1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20 10 11 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME 12 13 // <format> 14 15 // template<ranges::input_range R, class charT> 16 // struct range-default-formatter<range_format::set, R, charT> 17 18 // template<class FormatContext> 19 // typename FormatContext::iterator 20 // format(const T& ref, FormatContext& ctx) const; 21 22 // Note this tests the basics of this function. It's tested in more detail in 23 // the format.functions test. 24 25 #include <cassert> 26 #include <concepts> 27 #include <iterator> 28 #include <format> 29 #include <set> 30 31 #include "assert_macros.h" 32 #include "format.functions.common.h" 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 void test_format(StringViewT expected, std::set<int> arg) { 41 using CharT = typename StringViewT::value_type; 42 using String = std::basic_string<CharT>; 43 using OutIt = std::back_insert_iterator<String>; 44 using FormatCtxT = std::basic_format_context<OutIt, CharT>; 45 46 std::formatter<std::set<int>, CharT> formatter; 47 48 String result; 49 OutIt out = std::back_inserter(result); 50 FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg)); 51 formatter.format(arg, format_ctx); 52 assert(result == expected); 53 } 54 55 template <class CharT> 56 void test_assure_parse_is_called(std::basic_string_view<CharT> fmt) { 57 using String = std::basic_string<CharT>; 58 using OutIt = std::back_insert_iterator<String>; 59 using FormatCtxT = std::basic_format_context<OutIt, CharT>; 60 std::set<parse_call_validator> arg{parse_call_validator{}}; 61 62 String result; 63 OutIt out = std::back_inserter(result); 64 FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg)); 65 66 std::formatter<decltype(arg), CharT> formatter; 67 std::basic_format_parse_context<CharT> ctx{fmt}; 68 69 formatter.parse(ctx); 70 formatter.format(arg, format_ctx); 71 } 72 73 template <class CharT> 74 void test_assure_parse_is_called() { 75 using String = std::basic_string<CharT>; 76 using OutIt = std::back_insert_iterator<String>; 77 using FormatCtxT = std::basic_format_context<OutIt, CharT>; 78 std::set<parse_call_validator> arg{parse_call_validator{}}; 79 80 String result; 81 OutIt out = std::back_inserter(result); 82 [[maybe_unused]] FormatCtxT format_ctx = 83 test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg)); 84 85 { // parse not called 86 [[maybe_unused]] const std::formatter<decltype(arg), CharT> formatter; 87 TEST_THROWS_TYPE(parse_call_validator::parse_function_not_called, formatter.format(arg, format_ctx)); 88 } 89 90 test_assure_parse_is_called(SV("5")); 91 test_assure_parse_is_called(SV("n")); 92 test_assure_parse_is_called(SV("5n")); 93 } 94 95 template <class CharT> 96 void test_fmt() { 97 test_format(SV("{42}"), std::set<int>{42}); 98 99 test_assure_parse_is_called<CharT>(); 100 } 101 102 void test() { 103 test_fmt<char>(); 104 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 105 test_fmt<wchar_t>(); 106 #endif 107 } 108 109 int main(int, char**) { 110 test(); 111 112 return 0; 113 } 114