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 // <unordered_map>
11
12 // template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
13 // class Alloc = allocator<pair<const Key, T>>>
14 // class unordered_map
15
16 // template <class... Args>
17 // pair<iterator, bool> emplace(Args&&... args);
18
19 #include <unordered_map>
20 #include <cassert>
21
22 #include "../../../Emplaceable.h"
23 #include "min_allocator.h"
24
main()25 int main()
26 {
27 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
28 {
29 typedef std::unordered_map<int, Emplaceable> C;
30 typedef std::pair<C::iterator, bool> R;
31 C c;
32 R r = c.emplace(std::piecewise_construct, std::forward_as_tuple(3),
33 std::forward_as_tuple());
34 assert(r.second);
35 assert(c.size() == 1);
36 assert(r.first->first == 3);
37 assert(r.first->second == Emplaceable());
38
39 r = c.emplace(std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
40 assert(r.second);
41 assert(c.size() == 2);
42 assert(r.first->first == 4);
43 assert(r.first->second == Emplaceable(5, 6));
44
45 r = c.emplace(std::piecewise_construct, std::forward_as_tuple(5),
46 std::forward_as_tuple(6, 7));
47 assert(r.second);
48 assert(c.size() == 3);
49 assert(r.first->first == 5);
50 assert(r.first->second == Emplaceable(6, 7));
51 }
52 #if __cplusplus >= 201103L
53 {
54 typedef std::unordered_map<int, Emplaceable, std::hash<int>, std::equal_to<int>,
55 min_allocator<std::pair<const int, Emplaceable>>> C;
56 typedef std::pair<C::iterator, bool> R;
57 C c;
58 R r = c.emplace(std::piecewise_construct, std::forward_as_tuple(3),
59 std::forward_as_tuple());
60 assert(r.second);
61 assert(c.size() == 1);
62 assert(r.first->first == 3);
63 assert(r.first->second == Emplaceable());
64
65 r = c.emplace(std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
66 assert(r.second);
67 assert(c.size() == 2);
68 assert(r.first->first == 4);
69 assert(r.first->second == Emplaceable(5, 6));
70
71 r = c.emplace(std::piecewise_construct, std::forward_as_tuple(5),
72 std::forward_as_tuple(6, 7));
73 assert(r.second);
74 assert(c.size() == 3);
75 assert(r.first->first == 5);
76 assert(r.first->second == Emplaceable(6, 7));
77 }
78 #endif
79 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
80 }
81