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 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 29 ASSERT_SAME_TYPE(decltype( L"Hi"s), std::wstring); 30 #endif 31 ASSERT_SAME_TYPE(decltype( u"Hi"s), std::u16string); 32 ASSERT_SAME_TYPE(decltype( U"Hi"s), std::u32string); 33 34 std::string foo; 35 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 36 std::wstring Lfoo; 37 #endif 38 u8string u8foo; 39 std::u16string ufoo; 40 std::u32string Ufoo; 41 42 foo = ""s; assert( foo.size() == 0); 43 u8foo = u8""s; assert(u8foo.size() == 0); 44 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 45 Lfoo = L""s; assert( Lfoo.size() == 0); 46 #endif 47 ufoo = u""s; assert( ufoo.size() == 0); 48 Ufoo = U""s; assert( Ufoo.size() == 0); 49 50 foo = " "s; assert( foo.size() == 1); 51 u8foo = u8" "s; assert(u8foo.size() == 1); 52 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 53 Lfoo = L" "s; assert( Lfoo.size() == 1); 54 #endif 55 ufoo = u" "s; assert( ufoo.size() == 1); 56 Ufoo = U" "s; assert( Ufoo.size() == 1); 57 58 foo = "ABC"s; assert( foo == "ABC"); assert( foo == std::string ( "ABC")); 59 u8foo = u8"ABC"s; assert(u8foo == u8"ABC"); assert(u8foo == u8string (u8"ABC")); 60 #ifndef TEST_HAS_NO_WIDE_CHARACTERS 61 Lfoo = L"ABC"s; assert( Lfoo == L"ABC"); assert( Lfoo == std::wstring ( L"ABC")); 62 #endif 63 ufoo = u"ABC"s; assert( ufoo == u"ABC"); assert( ufoo == std::u16string( u"ABC")); 64 Ufoo = U"ABC"s; assert( Ufoo == U"ABC"); assert( Ufoo == std::u32string( U"ABC")); 65 } 66 { 67 using namespace std::literals; 68 std::string foo = ""s; 69 assert(foo == std::string()); 70 } 71 { 72 using namespace std; 73 std::string foo = ""s; 74 assert(foo == std::string()); 75 } 76 77 return 0; 78 } 79