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// <vector>
14
15// template<class T, class charT>
16// requires is-vector-bool-reference<T>
17// struct formatter<T, charT>
18
19// template<class ParseContext>
20// constexpr typename ParseContext::iterator
21// parse(ParseContext& ctx);
22
23// Note this tests the basics of this function. It's tested in more detail in
24// the format functions test.
25
26#include <cassert>
27#include <concepts>
28#include <format>
29#include <memory>
30#include <vector>
31
32#include "test_macros.h"
33#include "make_string.h"
34
35#define SV(S) MAKE_STRING_VIEW(CharT, S)
36
37template <class StringViewT>
38constexpr void test_parse(StringViewT fmt, std::size_t offset) {
39 using CharT = typename StringViewT::value_type;
40 auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
41 std::formatter<std::vector<bool, std::allocator<bool>>::reference, CharT> formatter;
42 static_assert(std::semiregular<decltype(formatter)>);
43
44 std::same_as<typename StringViewT::iterator> auto it = formatter.parse(parse_ctx);
45 // std::to_address works around LWG3989 and MSVC STL's iterator debugging mechanism.
46 assert(std::to_address(it) == std::to_address(fmt.end()) - offset);
47}
48
49template <class CharT>
50constexpr void test_fmt() {
51 test_parse(SV(""), 0);
52 test_parse(SV("b"), 0);
53
54 test_parse(SV("}"), 1);
55 test_parse(SV("b}"), 1);
56}
57
58constexpr bool test() {
59 test_fmt<char>();
60#ifndef TEST_HAS_NO_WIDE_CHARACTERS
61 test_fmt<wchar_t>();
62#endif
63
64 return true;
65}
66
67int main(int, char**) {
68 test();
69 static_assert(test());
70
71 return 0;
72}
73

source code of libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/parse.pass.cpp