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 // <string> 11 // UNSUPPORTED: c++98, c++03, c++11, c++14 12 // UNSUPPORTED: clang-3.3, clang-3.4, clang-3.5, clang-3.6, clang-3.7, clang-3.8, clang-3.9, clang-4.0 13 // UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8.0 14 15 // template<class InputIterator> 16 // basic_string(InputIterator begin, InputIterator end, 17 // const Allocator& a = Allocator()); 18 19 // template<class InputIterator, 20 // class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>> 21 // basic_string(InputIterator, InputIterator, Allocator = Allocator()) 22 // -> basic_string<typename iterator_traits<InputIterator>::value_type, 23 // char_traits<typename iterator_traits<InputIterator>::value_type>, 24 // Allocator>; 25 // 26 // The deduction guide shall not participate in overload resolution if InputIterator 27 // is a type that does not qualify as an input iterator, or if Allocator is a type 28 // that does not qualify as an allocator. 29 30 31 #include <string> 32 #include <iterator> 33 #include <cassert> 34 #include <cstddef> 35 36 #include "test_macros.h" 37 #include "test_allocator.h" 38 #include "../input_iterator.h" 39 #include "min_allocator.h" 40 41 int main() 42 { 43 { 44 const char* s = "12345678901234"; 45 std::basic_string s1{s, s+10, std::allocator<char>{}}; 46 using S = decltype(s1); // what type did we get? 47 static_assert(std::is_same_v<S::value_type, char>, ""); 48 static_assert(std::is_same_v<S::traits_type, std::char_traits<char>>, ""); 49 static_assert(std::is_same_v<S::allocator_type, std::allocator<char>>, ""); 50 assert(s1.size() == 10); 51 assert(s1.compare(0, s1.size(), s, s1.size()) == 0); 52 } 53 { 54 const wchar_t* s = L"12345678901234"; 55 std::basic_string s1{s, s+10, test_allocator<wchar_t>{}}; 56 using S = decltype(s1); // what type did we get? 57 static_assert(std::is_same_v<S::value_type, wchar_t>, ""); 58 static_assert(std::is_same_v<S::traits_type, std::char_traits<wchar_t>>, ""); 59 static_assert(std::is_same_v<S::allocator_type, test_allocator<wchar_t>>, ""); 60 assert(s1.size() == 10); 61 assert(s1.compare(0, s1.size(), s, s1.size()) == 0); 62 } 63 { 64 const char16_t* s = u"12345678901234"; 65 std::basic_string s1{s, s+10, min_allocator<char16_t>{}}; 66 using S = decltype(s1); // what type did we get? 67 static_assert(std::is_same_v<S::value_type, char16_t>, ""); 68 static_assert(std::is_same_v<S::traits_type, std::char_traits<char16_t>>, ""); 69 static_assert(std::is_same_v<S::allocator_type, min_allocator<char16_t>>, ""); 70 assert(s1.size() == 10); 71 assert(s1.compare(0, s1.size(), s, s1.size()) == 0); 72 } 73 { 74 const char32_t* s = U"12345678901234"; 75 std::basic_string s1{s, s+10, explicit_allocator<char32_t>{}}; 76 using S = decltype(s1); // what type did we get? 77 static_assert(std::is_same_v<S::value_type, char32_t>, ""); 78 static_assert(std::is_same_v<S::traits_type, std::char_traits<char32_t>>, ""); 79 static_assert(std::is_same_v<S::allocator_type, explicit_allocator<char32_t>>, ""); 80 assert(s1.size() == 10); 81 assert(s1.compare(0, s1.size(), s, s1.size()) == 0); 82 } 83 } 84