1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10
11 // <string_view>
12
13 // constexpr basic_string_view(const _CharT* _s, size_type _len)
14 // : __data (_s), __size(_len) {}
15
16
17 #include <experimental/string_view>
18 #include <string>
19 #include <cassert>
20
21 template<typename CharT>
test(const CharT * s,size_t sz)22 void test ( const CharT *s, size_t sz ) {
23 {
24 std::experimental::basic_string_view<CharT> sv1 ( s, sz );
25 assert ( sv1.size() == sz );
26 assert ( sv1.data() == s );
27 }
28 }
29
main()30 int main () {
31
32 test ( "QBCDE", 5 );
33 test ( "QBCDE", 2 );
34 test ( "", 0 );
35 #if _LIBCPP_STD_VER > 11
36 {
37 constexpr const char *s = "QBCDE";
38 constexpr std::experimental::basic_string_view<char> sv1 ( s, 2 );
39 static_assert ( sv1.size() == 2, "" );
40 static_assert ( sv1.data() == s, "" );
41 }
42 #endif
43
44 test ( L"QBCDE", 5 );
45 test ( L"QBCDE", 2 );
46 test ( L"", 0 );
47 #if _LIBCPP_STD_VER > 11
48 {
49 constexpr const wchar_t *s = L"QBCDE";
50 constexpr std::experimental::basic_string_view<wchar_t> sv1 ( s, 2 );
51 static_assert ( sv1.size() == 2, "" );
52 static_assert ( sv1.data() == s, "" );
53 }
54 #endif
55
56 #if __cplusplus >= 201103L
57 test ( u"QBCDE", 5 );
58 test ( u"QBCDE", 2 );
59 test ( u"", 0 );
60 #if _LIBCPP_STD_VER > 11
61 {
62 constexpr const char16_t *s = u"QBCDE";
63 constexpr std::experimental::basic_string_view<char16_t> sv1 ( s, 2 );
64 static_assert ( sv1.size() == 2, "" );
65 static_assert ( sv1.data() == s, "" );
66 }
67 #endif
68
69 test ( U"QBCDE", 5 );
70 test ( U"QBCDE", 2 );
71 test ( U"", 0 );
72 #if _LIBCPP_STD_VER > 11
73 {
74 constexpr const char32_t *s = U"QBCDE";
75 constexpr std::experimental::basic_string_view<char32_t> sv1 ( s, 2 );
76 static_assert ( sv1.size() == 2, "" );
77 static_assert ( sv1.data() == s, "" );
78 }
79 #endif
80 #endif
81 }
82