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 // UNSUPPORTED: c++98, c++03, c++11 11 12 // <experimental/iterator> 13 // 14 // template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>> 15 // class ostream_joiner; 16 // 17 // template<typename T> 18 // ostream_joiner & operator=(const T&) 19 // 20 21 #include <experimental/iterator> 22 #include <iostream> 23 #include <sstream> 24 #include <cassert> 25 26 #include "test_macros.h" 27 #include "test_iterators.h" 28 29 struct mutating_delimiter { 30 mutating_delimiter(char c = ' ') : c_(c) {} 31 char get () const { return c_++; } 32 mutable char c_; 33 }; 34 35 template<class _CharT, class _Traits> 36 std::basic_ostream<_CharT, _Traits>& 37 operator<<(std::basic_ostream<_CharT, _Traits>& os, const mutating_delimiter &d) 38 { return os << d.get(); } 39 40 41 struct mutating_delimiter2 { // same as above, w/o the const and the mutable 42 mutating_delimiter2(char c = ' ') : c_(c) {} 43 char get () { return c_++; } 44 char c_; 45 }; 46 47 template<class _CharT, class _Traits> 48 std::basic_ostream<_CharT, _Traits>& 49 operator<<(std::basic_ostream<_CharT, _Traits>& os, mutating_delimiter2 &d) 50 { return os << d.get(); } 51 52 53 namespace exp = std::experimental; 54 55 template <class Delim, class Iter, class CharT = char, class Traits = std::char_traits<CharT>> 56 void test (Delim &&d, Iter first, Iter last, const CharT *expected ) { 57 typedef exp::ostream_joiner<typename std::decay<Delim>::type, CharT, Traits> Joiner; 58 59 static_assert((std::is_copy_constructible<Joiner>::value == std::is_copy_constructible<typename std::decay<Delim>::type>::value), "" ); 60 static_assert((std::is_move_constructible<Joiner>::value == std::is_move_constructible<typename std::decay<Delim>::type>::value), "" ); 61 static_assert((std::is_copy_assignable<Joiner> ::value == std::is_copy_assignable<typename std::decay<Delim>::type> ::value), "" ); 62 static_assert((std::is_move_assignable<Joiner> ::value == std::is_move_assignable<typename std::decay<Delim>::type> ::value), "" ); 63 64 std::basic_stringstream<CharT, Traits> sstream; 65 Joiner joiner(sstream, d); 66 while (first != last) 67 *joiner++ = *first++; 68 assert(sstream.str() == expected); 69 } 70 71 int main () { 72 { 73 const char chars[] = "0123456789"; 74 const int ints [] = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 }; 75 76 test('X', chars, chars+10, "0X1X2X3X4X5X6X7X8X9"); 77 test('x', ints, ints+10, "10x11x12x13x14x15x16x17x18x19"); 78 test('X', input_iterator<const char*>(chars), input_iterator<const char*>(chars+10), "0X1X2X3X4X5X6X7X8X9"); 79 test('x', input_iterator<const int*>(ints), input_iterator<const int*>(ints+10), "10x11x12x13x14x15x16x17x18x19"); 80 test('X', forward_iterator<const char*>(chars), forward_iterator<const char*>(chars+10), "0X1X2X3X4X5X6X7X8X9"); 81 test('x', forward_iterator<const int*>(ints), forward_iterator<const int*>(ints+10), "10x11x12x13x14x15x16x17x18x19"); 82 test('X', random_access_iterator<const char*>(chars), random_access_iterator<const char*>(chars+10), "0X1X2X3X4X5X6X7X8X9"); 83 test('x', random_access_iterator<const int*>(ints), random_access_iterator<const int*>(ints+10), "10x11x12x13x14x15x16x17x18x19"); 84 85 test("Z", chars, chars+10, "0Z1Z2Z3Z4Z5Z6Z7Z8Z9"); 86 test("z", ints, ints+10, "10z11z12z13z14z15z16z17z18z19"); 87 88 test<char, const char *, wchar_t> ('X', chars, chars+10, L"0X1X2X3X4X5X6X7X8X9"); 89 test<char, const int *, wchar_t> ('x', ints, ints+10, L"10x11x12x13x14x15x16x17x18x19"); 90 // test<char, const char *, char16_t>('X', chars, chars+10, u"0X1X2X3X4X5X6X7X8X9"); 91 // test<char, const int *, char16_t>('x', ints, ints+10, u"10x11x12x13x14x15x16x17x18x19"); 92 // test<char, const char *, char32_t>('X', chars, chars+10, U"0X1X2X3X4X5X6X7X8X9"); 93 // test<char, const int *, char32_t>('x', ints, ints+10, U"10x11x12x13x14x15x16x17x18x19"); 94 95 test(mutating_delimiter(), chars, chars+10, "0 1!2\"3#4$5%6&7'8(9"); 96 test(mutating_delimiter2(), chars, chars+10, "0 1!2\"3#4$5%6&7'8(9"); 97 } 98 99 { 100 const wchar_t chars[] = L"0123456789"; 101 const int ints [] = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 }; 102 test(L'X', chars, chars+10, L"0X1X2X3X4X5X6X7X8X9"); 103 test(L'x', ints, ints+10, L"10x11x12x13x14x15x16x17x18x19"); 104 test(L'X', input_iterator<const wchar_t*>(chars), input_iterator<const wchar_t*>(chars+10), L"0X1X2X3X4X5X6X7X8X9"); 105 test(L'x', input_iterator<const int*>(ints), input_iterator<const int*>(ints+10), L"10x11x12x13x14x15x16x17x18x19"); 106 test(L'X', forward_iterator<const wchar_t*>(chars), forward_iterator<const wchar_t*>(chars+10), L"0X1X2X3X4X5X6X7X8X9"); 107 test(L'x', forward_iterator<const int*>(ints), forward_iterator<const int*>(ints+10), L"10x11x12x13x14x15x16x17x18x19"); 108 test(L'X', random_access_iterator<const wchar_t*>(chars), random_access_iterator<const wchar_t*>(chars+10), L"0X1X2X3X4X5X6X7X8X9"); 109 test(L'x', random_access_iterator<const int*>(ints), random_access_iterator<const int*>(ints+10), L"10x11x12x13x14x15x16x17x18x19"); 110 111 test(L"Z", chars, chars+10, L"0Z1Z2Z3Z4Z5Z6Z7Z8Z9"); 112 test(L"z", ints, ints+10, L"10z11z12z13z14z15z16z17z18z19"); 113 114 test<char, const wchar_t *, wchar_t> ('X', chars, chars+10, L"0X1X2X3X4X5X6X7X8X9"); 115 test<char, const int *, wchar_t> ('x', ints, ints+10, L"10x11x12x13x14x15x16x17x18x19"); 116 117 test(mutating_delimiter(), chars, chars+10, L"0 1!2\"3#4$5%6&7'8(9"); 118 } 119 120 } 121
