| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 10 | // UNSUPPORTED: no-localization |
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| 11 | |
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| 12 | // Check LWG-3698: `regex_iterator` and `join_view` don't work together very well |
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| 13 | |
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| 14 | #include <algorithm> |
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| 15 | #include <array> |
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| 16 | #include <cassert> |
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| 17 | #include <ranges> |
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| 18 | #include <regex> |
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| 19 | #include <string_view> |
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| 20 | |
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| 21 | int main(int, char**) { |
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| 22 | char const text[] = "Hello" ; |
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| 23 | std::regex regex{"[a-z]" }; |
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| 24 | |
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| 25 | auto lower = |
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| 26 | std::ranges::subrange( |
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| 27 | std::cregex_iterator(std::ranges::begin(text), std::ranges::end(text), regex), std::cregex_iterator{}) | |
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| 28 | std::views::join | std::views::transform([](auto const& sm) { return std::string_view(sm.first, sm.second); }); |
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| 29 | |
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| 30 | assert(std::ranges::equal(lower, std::to_array<std::string_view>({"e" , "l" , "l" , "o" }))); |
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| 31 | |
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| 32 | return 0; |
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| 33 | } |
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| 34 | |
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