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, c++14, c++17 10 // UNSUPPORTED: libcpp-no-concepts 11 // UNSUPPORTED: gcc-10 12 13 // decltype(auto) operator->() const 14 // requires see below; 15 16 #include <iterator> 17 #include <cassert> 18 19 #include "test_macros.h" 20 #include "types.h" 21 22 void test() { 23 int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8}; 24 25 // Case 2: http://eel.is/c++draft/iterators.common#common.iter.access-5.2 26 { 27 auto iter1 = simple_iterator<int*>(buffer); 28 auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 29 const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 30 31 assert(commonIter1.operator->() == buffer); 32 assert(commonIter2.operator->() == buffer); 33 } 34 35 // Case 3: http://eel.is/c++draft/iterators.common#common.iter.access-5.3 36 { 37 auto iter1 = value_iterator<int*>(buffer); 38 auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 39 const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 40 41 assert(*commonIter1.operator->().operator->() == 1); 42 assert(*commonIter2.operator->().operator->() == 1); 43 } 44 45 // Case 3: http://eel.is/c++draft/iterators.common#common.iter.access-5.3 46 { 47 auto iter1 = void_plus_plus_iterator<int*>(buffer); 48 auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 49 const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 50 51 assert(*commonIter1.operator->().operator->() == 1); 52 assert(*commonIter2.operator->().operator->() == 1); 53 } 54 55 // Case 1: http://eel.is/c++draft/iterators.common#common.iter.access-5.1 56 { 57 auto iter1 = cpp17_input_iterator<int*>(buffer); 58 auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 59 const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 60 61 assert(commonIter1.operator->().base() == buffer); 62 assert(commonIter2.operator->().base() == buffer); 63 } 64 65 // Case 1: http://eel.is/c++draft/iterators.common#common.iter.access-5.1 66 { 67 auto iter1 = forward_iterator<int*>(buffer); 68 auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 69 const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 70 71 assert(commonIter1.operator->().base() == buffer); 72 assert(commonIter2.operator->().base() == buffer); 73 } 74 75 // Case 1: http://eel.is/c++draft/iterators.common#common.iter.access-5.1 76 { 77 auto iter1 = random_access_iterator<int*>(buffer); 78 auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 79 const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1); 80 81 assert(commonIter1.operator->().base() == buffer); 82 assert(commonIter2.operator->().base() == buffer); 83 } 84 } 85 86 int main(int, char**) { 87 test(); 88 89 return 0; 90 } 91