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 // basic_string_view(const basic_string<_CharT, _Traits, Allocator>& _str) noexcept 15 16 17 #include <experimental/string_view> 18 #include <string> 19 #include <cassert> 20 21 struct dummy_char_traits : public std::char_traits<char> {}; 22 23 template<typename CharT, typename Traits> test(const std::basic_string<CharT,Traits> & str)24void test ( const std::basic_string<CharT, Traits> &str ) { 25 std::experimental::basic_string_view<CharT, Traits> sv1 ( str ); 26 assert ( sv1.size() == str.size()); 27 assert ( sv1.data() == str.data()); 28 } 29 main()30int main () { 31 32 test ( std::string("QBCDE") ); 33 test ( std::string("") ); 34 test ( std::string() ); 35 36 test ( std::wstring(L"QBCDE") ); 37 test ( std::wstring(L"") ); 38 test ( std::wstring() ); 39 40 #if __cplusplus >= 201103L 41 test ( std::u16string{u"QBCDE"} ); 42 test ( std::u16string{u""} ); 43 test ( std::u16string{} ); 44 45 test ( std::u32string{U"QBCDE"} ); 46 test ( std::u32string{U""} ); 47 test ( std::u32string{} ); 48 #endif 49 50 test ( std::basic_string<char, dummy_char_traits>("QBCDE") ); 51 test ( std::basic_string<char, dummy_char_traits>("") ); 52 test ( std::basic_string<char, dummy_char_traits>() ); 53 54 } 55