llvm-project

Форк
0
159 строк · 5.9 Кб
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
// <map>
10

11
// class multimap
12

13
// iterator erase(const_iterator first, const_iterator last);
14

15
#include <map>
16
#include <cassert>
17

18
#include "test_macros.h"
19
#include "min_allocator.h"
20

21
int main(int, char**)
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(std::next(m.begin())->first == 2);
46
        assert(std::next(m.begin())->second == 2.5);
47
        assert(std::next(m.begin(), 2)->first == 3);
48
        assert(std::next(m.begin(), 2)->second == 3.5);
49
        assert(std::next(m.begin(), 3)->first == 4);
50
        assert(std::next(m.begin(), 3)->second == 4.5);
51
        assert(std::next(m.begin(), 4)->first == 5);
52
        assert(std::next(m.begin(), 4)->second == 5.5);
53
        assert(std::next(m.begin(), 5)->first == 6);
54
        assert(std::next(m.begin(), 5)->second == 6.5);
55
        assert(std::next(m.begin(), 6)->first == 7);
56
        assert(std::next(m.begin(), 6)->second == 7.5);
57
        assert(std::next(m.begin(), 7)->first == 8);
58
        assert(std::next(m.begin(), 7)->second == 8.5);
59

60
        i = m.erase(m.cbegin(), std::next(m.cbegin(), 2));
61
        assert(m.size() == 6);
62
        assert(i == m.begin());
63
        assert(std::next(m.begin(), 0)->first == 3);
64
        assert(std::next(m.begin(), 0)->second == 3.5);
65
        assert(std::next(m.begin(), 1)->first == 4);
66
        assert(std::next(m.begin(), 1)->second == 4.5);
67
        assert(std::next(m.begin(), 2)->first == 5);
68
        assert(std::next(m.begin(), 2)->second == 5.5);
69
        assert(std::next(m.begin(), 3)->first == 6);
70
        assert(std::next(m.begin(), 3)->second == 6.5);
71
        assert(std::next(m.begin(), 4)->first == 7);
72
        assert(std::next(m.begin(), 4)->second == 7.5);
73
        assert(std::next(m.begin(), 5)->first == 8);
74
        assert(std::next(m.begin(), 5)->second == 8.5);
75

76
        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 6));
77
        assert(m.size() == 2);
78
        assert(i == std::next(m.begin(), 2));
79
        assert(std::next(m.begin(), 0)->first == 3);
80
        assert(std::next(m.begin(), 0)->second == 3.5);
81
        assert(std::next(m.begin(), 1)->first == 4);
82
        assert(std::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 TEST_STD_VER >= 11
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(std::next(m.begin())->first == 2);
113
        assert(std::next(m.begin())->second == 2.5);
114
        assert(std::next(m.begin(), 2)->first == 3);
115
        assert(std::next(m.begin(), 2)->second == 3.5);
116
        assert(std::next(m.begin(), 3)->first == 4);
117
        assert(std::next(m.begin(), 3)->second == 4.5);
118
        assert(std::next(m.begin(), 4)->first == 5);
119
        assert(std::next(m.begin(), 4)->second == 5.5);
120
        assert(std::next(m.begin(), 5)->first == 6);
121
        assert(std::next(m.begin(), 5)->second == 6.5);
122
        assert(std::next(m.begin(), 6)->first == 7);
123
        assert(std::next(m.begin(), 6)->second == 7.5);
124
        assert(std::next(m.begin(), 7)->first == 8);
125
        assert(std::next(m.begin(), 7)->second == 8.5);
126

127
        i = m.erase(m.cbegin(), std::next(m.cbegin(), 2));
128
        assert(m.size() == 6);
129
        assert(i == m.begin());
130
        assert(std::next(m.begin(), 0)->first == 3);
131
        assert(std::next(m.begin(), 0)->second == 3.5);
132
        assert(std::next(m.begin(), 1)->first == 4);
133
        assert(std::next(m.begin(), 1)->second == 4.5);
134
        assert(std::next(m.begin(), 2)->first == 5);
135
        assert(std::next(m.begin(), 2)->second == 5.5);
136
        assert(std::next(m.begin(), 3)->first == 6);
137
        assert(std::next(m.begin(), 3)->second == 6.5);
138
        assert(std::next(m.begin(), 4)->first == 7);
139
        assert(std::next(m.begin(), 4)->second == 7.5);
140
        assert(std::next(m.begin(), 5)->first == 8);
141
        assert(std::next(m.begin(), 5)->second == 8.5);
142

143
        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 6));
144
        assert(m.size() == 2);
145
        assert(i == std::next(m.begin(), 2));
146
        assert(std::next(m.begin(), 0)->first == 3);
147
        assert(std::next(m.begin(), 0)->second == 3.5);
148
        assert(std::next(m.begin(), 1)->first == 4);
149
        assert(std::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

158
  return 0;
159
}
160

Использование cookies

Мы используем файлы cookie в соответствии с Политикой конфиденциальности и Политикой использования cookies.

Нажимая кнопку «Принимаю», Вы даете АО «СберТех» согласие на обработку Ваших персональных данных в целях совершенствования нашего веб-сайта и Сервиса GitVerse, а также повышения удобства их использования.

Запретить использование cookies Вы можете самостоятельно в настройках Вашего браузера.