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//===----------------------------------------------------------------------===//
// 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, c++20
// UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
// <format>
// template<class charT, formattable<charT>... Ts>
// struct formatter<pair-or-tuple<Ts...>, charT>
// template<class FormatContext>
// typename FormatContext::iterator
// format(see below& elems, FormatContext& ctx) const;
// Note this tests the basics of this function. It's tested in more detail in
// the format functions tests.
#include <cassert>
#include <concepts>
#include <format>
#include <iterator>
#include <tuple>
#include <utility>
#include "assert_macros.h"
#include "format.functions.common.h"
#include "make_string.h"
#include "test_format_context.h"
#include "test_macros.h"
#define SV(S) MAKE_STRING_VIEW(CharT, S)
template <class StringViewT, class Arg>
void test(StringViewT expected, Arg arg) {
using CharT = typename StringViewT::value_type;
using String = std::basic_string<CharT>;
using OutIt = std::back_insert_iterator<String>;
using FormatCtxT = std::basic_format_context<OutIt, CharT>;
const std::formatter<Arg, CharT> formatter;
String result;
OutIt out = std::back_inserter(result);
FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
formatter.format(arg, format_ctx);
assert(result == expected);
}
template <class CharT>
void test_assure_parse_is_called(std::basic_string_view<CharT> fmt) {
using String = std::basic_string<CharT>;
using OutIt = std::back_insert_iterator<String>;
using FormatCtxT = std::basic_format_context<OutIt, CharT>;
std::pair<parse_call_validator, parse_call_validator> arg;
String result;
OutIt out = std::back_inserter(result);
FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
std::formatter<decltype(arg), CharT> formatter;
std::basic_format_parse_context<CharT> ctx{fmt};
formatter.parse(ctx);
formatter.format(arg, format_ctx);
}
template <class CharT>
void test_assure_parse_is_called() {
using String = std::basic_string<CharT>;
using OutIt = std::back_insert_iterator<String>;
using FormatCtxT = std::basic_format_context<OutIt, CharT>;
std::pair<parse_call_validator, parse_call_validator> arg;
String result;
OutIt out = std::back_inserter(result);
[[maybe_unused]] FormatCtxT format_ctx =
test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
{ // parse not called
[[maybe_unused]] const std::formatter<decltype(arg), CharT> formatter;
TEST_THROWS_TYPE(parse_call_validator::parse_function_not_called, formatter.format(arg, format_ctx));
}
test_assure_parse_is_called(SV("5"));
test_assure_parse_is_called(SV("n"));
test_assure_parse_is_called(SV("m"));
test_assure_parse_is_called(SV("5n"));
test_assure_parse_is_called(SV("5m"));
}
template <class CharT>
void test() {
test(SV("(1)"), std::tuple<int>{1});
test(SV("(1, 1)"), std::tuple<int, CharT>{1, CharT('1')});
test(SV("(1, 1)"), std::pair<int, CharT>{1, CharT('1')});
test(SV("(1, 1, true)"), std::tuple<int, CharT, bool>{1, CharT('1'), true});
test_assure_parse_is_called<CharT>();
}
void test() {
test<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test<wchar_t>();
#endif
}
int main(int, char**) {
test();
return 0;
}
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