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