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 // <string> 10 11 // const charT* data() const; 12 // charT* data(); // C++17 13 14 #include <string> 15 #include <cassert> 16 17 #include "test_macros.h" 18 #include "min_allocator.h" 19 20 template <class S> 21 void 22 test_const(const S& s) 23 { 24 typedef typename S::traits_type T; 25 const typename S::value_type* str = s.data(); 26 if (s.size() > 0) 27 { 28 assert(T::compare(str, &s[0], s.size()) == 0); 29 assert(T::eq(str[s.size()], typename S::value_type())); 30 } 31 else 32 assert(T::eq(str[0], typename S::value_type())); 33 } 34 35 template <class S> 36 void 37 test_nonconst(S& s) 38 { 39 typedef typename S::traits_type T; 40 typename S::value_type* str = s.data(); 41 if (s.size() > 0) 42 { 43 assert(T::compare(str, &s[0], s.size()) == 0); 44 assert(T::eq(str[s.size()], typename S::value_type())); 45 } 46 else 47 assert(T::eq(str[0], typename S::value_type())); 48 } 49 50 int main() 51 { 52 { 53 typedef std::string S; 54 test_const(S("")); 55 test_const(S("abcde")); 56 test_const(S("abcdefghij")); 57 test_const(S("abcdefghijklmnopqrst")); 58 } 59 #if TEST_STD_VER >= 11 60 { 61 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 62 test_const(S("")); 63 test_const(S("abcde")); 64 test_const(S("abcdefghij")); 65 test_const(S("abcdefghijklmnopqrst")); 66 } 67 #endif 68 #if TEST_STD_VER > 14 69 { 70 typedef std::string S; 71 S s1(""); test_nonconst(s1); 72 S s2("abcde"); test_nonconst(s2); 73 S s3("abcdefghij"); test_nonconst(s3); 74 S s4("abcdefghijklmnopqrst"); test_nonconst(s4); 75 } 76 #endif 77 } 78