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 9 // UNSUPPORTED: c++03, c++11 10 11 #include <string> 12 #include <cassert> 13 14 #include "test_macros.h" 15 16 #if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L 17 typedef std::u8string u8string; 18 #else 19 typedef std::string u8string; 20 #endif 21 22 int main(int, char**) { 23 { 24 using namespace std::literals::string_literals; 25 26 ASSERT_SAME_TYPE(decltype( "Hi"s), std::string); 27 ASSERT_SAME_TYPE(decltype(u8"Hi"s), u8string); 28 ASSERT_SAME_TYPE(decltype( L"Hi"s), std::wstring); 29 ASSERT_SAME_TYPE(decltype( u"Hi"s), std::u16string); 30 ASSERT_SAME_TYPE(decltype( U"Hi"s), std::u32string); 31 32 std::string foo; 33 std::wstring Lfoo; 34 u8string u8foo; 35 std::u16string ufoo; 36 std::u32string Ufoo; 37 38 foo = ""s; assert( foo.size() == 0); 39 u8foo = u8""s; assert(u8foo.size() == 0); 40 Lfoo = L""s; assert( Lfoo.size() == 0); 41 ufoo = u""s; assert( ufoo.size() == 0); 42 Ufoo = U""s; assert( Ufoo.size() == 0); 43 44 foo = " "s; assert( foo.size() == 1); 45 u8foo = u8" "s; assert(u8foo.size() == 1); 46 Lfoo = L" "s; assert( Lfoo.size() == 1); 47 ufoo = u" "s; assert( ufoo.size() == 1); 48 Ufoo = U" "s; assert( Ufoo.size() == 1); 49 50 foo = "ABC"s; assert( foo == "ABC"); assert( foo == std::string ( "ABC")); 51 u8foo = u8"ABC"s; assert(u8foo == u8"ABC"); assert(u8foo == u8string (u8"ABC")); 52 Lfoo = L"ABC"s; assert( Lfoo == L"ABC"); assert( Lfoo == std::wstring ( L"ABC")); 53 ufoo = u"ABC"s; assert( ufoo == u"ABC"); assert( ufoo == std::u16string( u"ABC")); 54 Ufoo = U"ABC"s; assert( Ufoo == U"ABC"); assert( Ufoo == std::u32string( U"ABC")); 55 } 56 { 57 using namespace std::literals; 58 std::string foo = ""s; 59 assert(foo == std::string()); 60 } 61 { 62 using namespace std; 63 std::string foo = ""s; 64 assert(foo == std::string()); 65 } 66 67 return 0; 68 } 69