//===----------------------------------------------------------------------===//
//
// 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<ranges::input_range R, class charT>
// struct range-default-formatter<range_format::sequence, R, charT>
// constexpr void set_separator(basic_string_view<charT> sep) noexcept;
#include <format>
#include <cassert>
#include <iterator>
#include <type_traits>
#include <vector>
#include "make_string.h"
#include "test_format_context.h"
#define SV(S) MAKE_STRING_VIEW(CharT, S)
template <class CharT>
constexpr void test_setter() {
std::formatter<std::vector<int>, CharT> formatter;
formatter.set_separator(SV("sep"));
// Note the SV macro may throw, so can't use it.
static_assert(noexcept(formatter.set_separator(std::basic_string_view<CharT>{})));
// Note there is no direct way to validate this function modified the object.
if (!std::is_constant_evaluated()) {
using String = std::basic_string<CharT>;
using OutIt = std::back_insert_iterator<String>;
using FormatCtxT = std::basic_format_context<OutIt, CharT>;
String result;
OutIt out = std::back_inserter(result);
FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>());
formatter.format(std::vector<int>{0, 42, 99}, format_ctx);
assert(result == SV("[0sep42sep99]"));
}
}
constexpr bool test() {
test_setter<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test_setter<wchar_t>();
#endif
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}