| 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: no-localization |
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| 10 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 11 | |
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| 12 | // Val& operator*() const; |
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| 13 | |
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| 14 | #include <cassert> |
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| 15 | #include <ranges> |
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| 16 | #include <sstream> |
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| 17 | |
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| 18 | #include "test_macros.h" |
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| 19 | #include "../utils.h" |
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| 20 | |
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| 21 | template <class CharT> |
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| 22 | void test() { |
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| 23 | // operator* should return correct value |
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| 24 | { |
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| 25 | auto iss = make_string_stream<CharT>("1 2 345 " ); |
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| 26 | std::ranges::basic_istream_view<int, CharT> isv{iss}; |
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| 27 | auto it = isv.begin(); |
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| 28 | std::same_as<int&> decltype(auto) v1 = *it; |
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| 29 | assert(v1 == 1); |
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| 30 | } |
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| 31 | |
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| 32 | // operator* should return the same reference to the value stored in the view |
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| 33 | { |
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| 34 | auto iss = make_string_stream<CharT>("1 2 345 " ); |
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| 35 | std::ranges::basic_istream_view<int, CharT> isv{iss}; |
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| 36 | using Iter = std::ranges::iterator_t<decltype(isv)>; |
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| 37 | |
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| 38 | Iter it1{isv}; |
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| 39 | Iter it2{isv}; |
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| 40 | assert(&*it1 == &*it2); |
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| 41 | } |
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| 42 | } |
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| 43 | |
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| 44 | int main(int, char**) { |
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| 45 | test<char>(); |
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| 46 | #ifndef TEST_HAS_NO_WIDE_CHARACTERS |
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| 47 | test<wchar_t>(); |
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| 48 | #endif |
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| 49 | |
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| 50 | return 0; |
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| 51 | } |
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| 52 | |
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