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 // <algorithm>
11 
12 // template<ForwardIterator Iter1, ForwardIterator Iter2>
13 //   requires HasSwap<Iter1::reference, Iter2::reference>
14 //   Iter2
15 //   swap_ranges(Iter1 first1, Iter1 last1, Iter2 first2);
16 
17 #include <algorithm>
18 #include <cassert>
19 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
20 #include <memory>
21 #endif
22 
23 #include "test_iterators.h"
24 
25 template<class Iter1, class Iter2>
26 void
27 test()
28 {
29     int i[3] = {1, 2, 3};
30     int j[3] = {4, 5, 6};
31     Iter2 r = std::swap_ranges(Iter1(i), Iter1(i+3), Iter2(j));
32     assert(base(r) == j+3);
33     assert(i[0] == 4);
34     assert(i[1] == 5);
35     assert(i[2] == 6);
36     assert(j[0] == 1);
37     assert(j[1] == 2);
38     assert(j[2] == 3);
39 }
40 
41 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
42 
43 template<class Iter1, class Iter2>
44 void
45 test1()
46 {
47     std::unique_ptr<int> i[3];
48     for (int k = 0; k < 3; ++k)
49         i[k].reset(new int(k+1));
50     std::unique_ptr<int> j[3];
51     for (int k = 0; k < 3; ++k)
52         j[k].reset(new int(k+4));
53     Iter2 r = std::swap_ranges(Iter1(i), Iter1(i+3), Iter2(j));
54     assert(base(r) == j+3);
55     assert(*i[0] == 4);
56     assert(*i[1] == 5);
57     assert(*i[2] == 6);
58     assert(*j[0] == 1);
59     assert(*j[1] == 2);
60     assert(*j[2] == 3);
61 }
62 
63 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
64 
65 int main()
66 {
67     test<forward_iterator<int*>, forward_iterator<int*> >();
68     test<forward_iterator<int*>, bidirectional_iterator<int*> >();
69     test<forward_iterator<int*>, random_access_iterator<int*> >();
70     test<forward_iterator<int*>, int*>();
71 
72     test<bidirectional_iterator<int*>, forward_iterator<int*> >();
73     test<bidirectional_iterator<int*>, bidirectional_iterator<int*> >();
74     test<bidirectional_iterator<int*>, random_access_iterator<int*> >();
75     test<bidirectional_iterator<int*>, int*>();
76 
77     test<random_access_iterator<int*>, forward_iterator<int*> >();
78     test<random_access_iterator<int*>, bidirectional_iterator<int*> >();
79     test<random_access_iterator<int*>, random_access_iterator<int*> >();
80     test<random_access_iterator<int*>, int*>();
81 
82     test<int*, forward_iterator<int*> >();
83     test<int*, bidirectional_iterator<int*> >();
84     test<int*, random_access_iterator<int*> >();
85     test<int*, int*>();
86 
87 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
88 
89     test1<forward_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
90     test1<forward_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
91     test1<forward_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
92     test1<forward_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
93 
94     test1<bidirectional_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
95     test1<bidirectional_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
96     test1<bidirectional_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
97     test1<bidirectional_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
98 
99     test1<random_access_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
100     test1<random_access_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
101     test1<random_access_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
102     test1<random_access_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
103 
104     test1<std::unique_ptr<int>*, forward_iterator<std::unique_ptr<int>*> >();
105     test1<std::unique_ptr<int>*, bidirectional_iterator<std::unique_ptr<int>*> >();
106     test1<std::unique_ptr<int>*, random_access_iterator<std::unique_ptr<int>*> >();
107     test1<std::unique_ptr<int>*, std::unique_ptr<int>*>();
108 
109 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
110 }
111