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 // UNSUPPORTED: libcpp-has-no-incomplete-ranges
10
11 // <string_view>
12
13 // template<class Range>
14 // basic_string_view(Range&&) -> basic_string_view<ranges::range_value_t<Range>>; // C++23
15
16 #include <string_view>
17 #include <cassert>
18
19 #include "make_string.h"
20 #include "test_iterators.h"
21 #include "test_macros.h"
22
23 template<class CharT>
test()24 void test() {
25 auto val = MAKE_STRING(CharT, "test");
26 auto sv = std::basic_string_view(val);
27 ASSERT_SAME_TYPE(decltype(sv), std::basic_string_view<CharT>);
28 assert(sv.size() == val.size());
29 assert(sv.data() == val.data());
30 }
31
test()32 void test() {
33 test<char>();
34 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
35 test<wchar_t>();
36 #endif
37 test<char8_t>();
38 test<char16_t>();
39 test<char32_t>();
40 test<char>();
41
42 struct Widget {
43 const char16_t *data_ = u"foo";
44 contiguous_iterator<const char16_t*> begin() const { return contiguous_iterator<const char16_t*>(data_); }
45 contiguous_iterator<const char16_t*> end() const { return contiguous_iterator<const char16_t*>(data_ + 3); }
46 };
47 std::basic_string_view bsv = Widget();
48 ASSERT_SAME_TYPE(decltype(bsv), std::basic_string_view<char16_t>);
49 }
50
main(int,char **)51 int main(int, char**) {
52 test();
53
54 return 0;
55 }
56
57