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: no-localization
10// UNSUPPORTED: c++03, c++11, c++14, c++17
11
12// Some basic examples of how istream_view might be used in the wild. This is a general
13// collection of sample algorithms and functions that try to mock general usage of
14// this view.
15
16#include <algorithm>
17#include <cassert>
18#include <ranges>
19#include <sstream>
20
21#include "test_macros.h"
22#include "utils.h"
23
24template <class CharT>
25void test() {
26 auto ints = make_string_stream<CharT>("0 1 2 3 4");
27 auto oss = std::basic_ostringstream<CharT>{};
28 auto delimiter = make_string<CharT>("-");
29 std::ranges::copy(
30 std::ranges::basic_istream_view<int, CharT>(ints), std::ostream_iterator<int, CharT>{oss, delimiter.c_str()});
31 auto expected = make_string<CharT>("0-1-2-3-4-");
32 assert(oss.str() == expected);
33}
34
35int main(int, char**) {
36 test<char>();
37#ifndef TEST_HAS_NO_WIDE_CHARACTERS
38 test<wchar_t>();
39#endif
40
41 return 0;
42}
43

source code of libcxx/test/std/ranges/range.factories/range.istream.view/general.pass.cpp