Dan Albert | 287553d | 2017-02-16 10:47:51 -0800 | [diff] [blame] | 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 | // <map> |
| 11 | |
| 12 | // class multimap |
| 13 | |
| 14 | // iterator erase(const_iterator first, const_iterator last); |
| 15 | |
| 16 | #include <map> |
| 17 | #include <cassert> |
| 18 | |
| 19 | #include "min_allocator.h" |
| 20 | |
| 21 | int main() |
| 22 | { |
| 23 | { |
| 24 | typedef std::multimap<int, double> M; |
| 25 | typedef std::pair<int, double> P; |
| 26 | typedef M::iterator I; |
| 27 | P ar[] = |
| 28 | { |
| 29 | P(1, 1.5), |
| 30 | P(2, 2.5), |
| 31 | P(3, 3.5), |
| 32 | P(4, 4.5), |
| 33 | P(5, 5.5), |
| 34 | P(6, 6.5), |
| 35 | P(7, 7.5), |
| 36 | P(8, 8.5), |
| 37 | }; |
| 38 | M m(ar, ar + sizeof(ar)/sizeof(ar[0])); |
| 39 | assert(m.size() == 8); |
| 40 | I i = m.erase(m.cbegin(), m.cbegin()); |
| 41 | assert(m.size() == 8); |
| 42 | assert(i == m.begin()); |
| 43 | assert(m.begin()->first == 1); |
| 44 | assert(m.begin()->second == 1.5); |
| 45 | assert(next(m.begin())->first == 2); |
| 46 | assert(next(m.begin())->second == 2.5); |
| 47 | assert(next(m.begin(), 2)->first == 3); |
| 48 | assert(next(m.begin(), 2)->second == 3.5); |
| 49 | assert(next(m.begin(), 3)->first == 4); |
| 50 | assert(next(m.begin(), 3)->second == 4.5); |
| 51 | assert(next(m.begin(), 4)->first == 5); |
| 52 | assert(next(m.begin(), 4)->second == 5.5); |
| 53 | assert(next(m.begin(), 5)->first == 6); |
| 54 | assert(next(m.begin(), 5)->second == 6.5); |
| 55 | assert(next(m.begin(), 6)->first == 7); |
| 56 | assert(next(m.begin(), 6)->second == 7.5); |
| 57 | assert(next(m.begin(), 7)->first == 8); |
| 58 | assert(next(m.begin(), 7)->second == 8.5); |
| 59 | |
| 60 | i = m.erase(m.cbegin(), next(m.cbegin(), 2)); |
| 61 | assert(m.size() == 6); |
| 62 | assert(i == m.begin()); |
| 63 | assert(next(m.begin(), 0)->first == 3); |
| 64 | assert(next(m.begin(), 0)->second == 3.5); |
| 65 | assert(next(m.begin(), 1)->first == 4); |
| 66 | assert(next(m.begin(), 1)->second == 4.5); |
| 67 | assert(next(m.begin(), 2)->first == 5); |
| 68 | assert(next(m.begin(), 2)->second == 5.5); |
| 69 | assert(next(m.begin(), 3)->first == 6); |
| 70 | assert(next(m.begin(), 3)->second == 6.5); |
| 71 | assert(next(m.begin(), 4)->first == 7); |
| 72 | assert(next(m.begin(), 4)->second == 7.5); |
| 73 | assert(next(m.begin(), 5)->first == 8); |
| 74 | assert(next(m.begin(), 5)->second == 8.5); |
| 75 | |
| 76 | i = m.erase(next(m.cbegin(), 2), next(m.cbegin(), 6)); |
| 77 | assert(m.size() == 2); |
| 78 | assert(i == next(m.begin(), 2)); |
| 79 | assert(next(m.begin(), 0)->first == 3); |
| 80 | assert(next(m.begin(), 0)->second == 3.5); |
| 81 | assert(next(m.begin(), 1)->first == 4); |
| 82 | assert(next(m.begin(), 1)->second == 4.5); |
| 83 | |
| 84 | i = m.erase(m.cbegin(), m.cend()); |
| 85 | assert(m.size() == 0); |
| 86 | assert(i == m.begin()); |
| 87 | assert(i == m.end()); |
| 88 | } |
| 89 | #if __cplusplus >= 201103L |
| 90 | { |
| 91 | typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M; |
| 92 | typedef std::pair<int, double> P; |
| 93 | typedef M::iterator I; |
| 94 | P ar[] = |
| 95 | { |
| 96 | P(1, 1.5), |
| 97 | P(2, 2.5), |
| 98 | P(3, 3.5), |
| 99 | P(4, 4.5), |
| 100 | P(5, 5.5), |
| 101 | P(6, 6.5), |
| 102 | P(7, 7.5), |
| 103 | P(8, 8.5), |
| 104 | }; |
| 105 | M m(ar, ar + sizeof(ar)/sizeof(ar[0])); |
| 106 | assert(m.size() == 8); |
| 107 | I i = m.erase(m.cbegin(), m.cbegin()); |
| 108 | assert(m.size() == 8); |
| 109 | assert(i == m.begin()); |
| 110 | assert(m.begin()->first == 1); |
| 111 | assert(m.begin()->second == 1.5); |
| 112 | assert(next(m.begin())->first == 2); |
| 113 | assert(next(m.begin())->second == 2.5); |
| 114 | assert(next(m.begin(), 2)->first == 3); |
| 115 | assert(next(m.begin(), 2)->second == 3.5); |
| 116 | assert(next(m.begin(), 3)->first == 4); |
| 117 | assert(next(m.begin(), 3)->second == 4.5); |
| 118 | assert(next(m.begin(), 4)->first == 5); |
| 119 | assert(next(m.begin(), 4)->second == 5.5); |
| 120 | assert(next(m.begin(), 5)->first == 6); |
| 121 | assert(next(m.begin(), 5)->second == 6.5); |
| 122 | assert(next(m.begin(), 6)->first == 7); |
| 123 | assert(next(m.begin(), 6)->second == 7.5); |
| 124 | assert(next(m.begin(), 7)->first == 8); |
| 125 | assert(next(m.begin(), 7)->second == 8.5); |
| 126 | |
| 127 | i = m.erase(m.cbegin(), next(m.cbegin(), 2)); |
| 128 | assert(m.size() == 6); |
| 129 | assert(i == m.begin()); |
| 130 | assert(next(m.begin(), 0)->first == 3); |
| 131 | assert(next(m.begin(), 0)->second == 3.5); |
| 132 | assert(next(m.begin(), 1)->first == 4); |
| 133 | assert(next(m.begin(), 1)->second == 4.5); |
| 134 | assert(next(m.begin(), 2)->first == 5); |
| 135 | assert(next(m.begin(), 2)->second == 5.5); |
| 136 | assert(next(m.begin(), 3)->first == 6); |
| 137 | assert(next(m.begin(), 3)->second == 6.5); |
| 138 | assert(next(m.begin(), 4)->first == 7); |
| 139 | assert(next(m.begin(), 4)->second == 7.5); |
| 140 | assert(next(m.begin(), 5)->first == 8); |
| 141 | assert(next(m.begin(), 5)->second == 8.5); |
| 142 | |
| 143 | i = m.erase(next(m.cbegin(), 2), next(m.cbegin(), 6)); |
| 144 | assert(m.size() == 2); |
| 145 | assert(i == next(m.begin(), 2)); |
| 146 | assert(next(m.begin(), 0)->first == 3); |
| 147 | assert(next(m.begin(), 0)->second == 3.5); |
| 148 | assert(next(m.begin(), 1)->first == 4); |
| 149 | assert(next(m.begin(), 1)->second == 4.5); |
| 150 | |
| 151 | i = m.erase(m.cbegin(), m.cend()); |
| 152 | assert(m.size() == 0); |
| 153 | assert(i == m.begin()); |
| 154 | assert(i == m.end()); |
| 155 | } |
| 156 | #endif |
| 157 | } |