xref: /minix3/external/bsd/libc++/dist/libcxx/test/support/MoveOnly.h (revision 0a6a1f1d05b60e214de2f05a7310ddd1f0e590e7)
1*0a6a1f1dSLionel Sambuc //===----------------------------------------------------------------------===//
2*0a6a1f1dSLionel Sambuc //
3*0a6a1f1dSLionel Sambuc //                     The LLVM Compiler Infrastructure
4*0a6a1f1dSLionel Sambuc //
5*0a6a1f1dSLionel Sambuc // This file is dual licensed under the MIT and the University of Illinois Open
6*0a6a1f1dSLionel Sambuc // Source Licenses. See LICENSE.TXT for details.
7*0a6a1f1dSLionel Sambuc //
8*0a6a1f1dSLionel Sambuc //===----------------------------------------------------------------------===//
9*0a6a1f1dSLionel Sambuc 
10*0a6a1f1dSLionel Sambuc #ifndef MOVEONLY_H
11*0a6a1f1dSLionel Sambuc #define MOVEONLY_H
12*0a6a1f1dSLionel Sambuc 
13*0a6a1f1dSLionel Sambuc #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
14*0a6a1f1dSLionel Sambuc 
15*0a6a1f1dSLionel Sambuc #include <cstddef>
16*0a6a1f1dSLionel Sambuc #include <functional>
17*0a6a1f1dSLionel Sambuc 
18*0a6a1f1dSLionel Sambuc class MoveOnly
19*0a6a1f1dSLionel Sambuc {
20*0a6a1f1dSLionel Sambuc     MoveOnly(const MoveOnly&);
21*0a6a1f1dSLionel Sambuc     MoveOnly& operator=(const MoveOnly&);
22*0a6a1f1dSLionel Sambuc 
23*0a6a1f1dSLionel Sambuc     int data_;
24*0a6a1f1dSLionel Sambuc public:
data_(data)25*0a6a1f1dSLionel Sambuc     MoveOnly(int data = 1) : data_(data) {}
MoveOnly(MoveOnly && x)26*0a6a1f1dSLionel Sambuc     MoveOnly(MoveOnly&& x)
27*0a6a1f1dSLionel Sambuc         : data_(x.data_) {x.data_ = 0;}
28*0a6a1f1dSLionel Sambuc     MoveOnly& operator=(MoveOnly&& x)
29*0a6a1f1dSLionel Sambuc         {data_ = x.data_; x.data_ = 0; return *this;}
30*0a6a1f1dSLionel Sambuc 
get()31*0a6a1f1dSLionel Sambuc     int get() const {return data_;}
32*0a6a1f1dSLionel Sambuc 
33*0a6a1f1dSLionel Sambuc     bool operator==(const MoveOnly& x) const {return data_ == x.data_;}
34*0a6a1f1dSLionel Sambuc     bool operator< (const MoveOnly& x) const {return data_ <  x.data_;}
35*0a6a1f1dSLionel Sambuc };
36*0a6a1f1dSLionel Sambuc 
37*0a6a1f1dSLionel Sambuc namespace std {
38*0a6a1f1dSLionel Sambuc 
39*0a6a1f1dSLionel Sambuc template <>
40*0a6a1f1dSLionel Sambuc struct hash<MoveOnly>
41*0a6a1f1dSLionel Sambuc     : public std::unary_function<MoveOnly, std::size_t>
42*0a6a1f1dSLionel Sambuc {
43*0a6a1f1dSLionel Sambuc     std::size_t operator()(const MoveOnly& x) const {return x.get();}
44*0a6a1f1dSLionel Sambuc };
45*0a6a1f1dSLionel Sambuc 
46*0a6a1f1dSLionel Sambuc }
47*0a6a1f1dSLionel Sambuc 
48*0a6a1f1dSLionel Sambuc #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
49*0a6a1f1dSLionel Sambuc 
50*0a6a1f1dSLionel Sambuc #endif  // MOVEONLY_H
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