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 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
9
10 // <string_view>
11
12 // template<class Range>
13 // basic_string_view(Range&&) -> basic_string_view<ranges::range_value_t<Range>>; // C++23
14
15 #include <string_view>
16 #include <cassert>
17
18 #include "make_string.h"
19 #include "test_iterators.h"
20 #include "test_macros.h"
21
22 template <class CharT>
test()23 void test() {
24 auto val = MAKE_STRING(CharT, "test");
25 auto sv = std::basic_string_view(val);
26 ASSERT_SAME_TYPE(decltype(sv), std::basic_string_view<CharT>);
27 assert(sv.size() == val.size());
28 assert(sv.data() == val.data());
29 }
30
test()31 void test() {
32 test<char>();
33 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
34 test<wchar_t>();
35 #endif
36 test<char8_t>();
37 test<char16_t>();
38 test<char32_t>();
39 test<char>();
40
41 struct Widget {
42 const char16_t* data_ = u"foo";
43 contiguous_iterator<const char16_t*> begin() const { return contiguous_iterator<const char16_t*>(data_); }
44 contiguous_iterator<const char16_t*> end() const { return contiguous_iterator<const char16_t*>(data_ + 3); }
45 };
46 std::basic_string_view bsv = std::basic_string_view(Widget());
47 ASSERT_SAME_TYPE(decltype(bsv), std::basic_string_view<char16_t>);
48 }
49
main(int,char **)50 int main(int, char**) {
51 test();
52
53 return 0;
54 }
55