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 // template<class _Allocator>
14 // explicit operator basic_string<_CharT, _Traits, _Allocator>() const
15 
16 #include <experimental/string_view>
17 #include <cassert>
18 
19 template<typename CharT>
test(const CharT * s)20 void test ( const CharT *s ) {
21     typedef std::experimental::basic_string_view<CharT> string_view_t;
22     typedef std::basic_string<CharT> string_t;
23 
24     {
25     string_view_t sv1 ( s );
26     string_t      str = (string_t) sv1;
27 
28     assert ( sv1.size() == str.size ());
29     assert ( std::char_traits<CharT>::compare ( sv1.data(), str.data(), sv1.size()) == 0 );
30     }
31 
32     {
33     string_view_t sv1;
34     string_t      str = (string_t) sv1;
35 
36     assert ( sv1.size() ==  0);
37     assert ( sv1.size() == str.size ());
38     }
39 }
40 
main()41 int main () {
42     test ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
43     test ( "ABCDE");
44     test ( "a" );
45     test ( "" );
46 
47     test ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
48     test ( L"ABCDE" );
49     test ( L"a" );
50     test ( L"" );
51 
52 #if __cplusplus >= 201103L
53     test ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
54     test ( u"ABCDE" );
55     test ( u"a" );
56     test ( u"" );
57 
58     test ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
59     test ( U"ABCDE" );
60     test ( U"a" );
61     test ( U"" );
62 #endif
63 }
64