xref: /minix3/external/bsd/libc++/dist/libcxx/test/utilities/tuple/tuple.tuple/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 
104684ddb6SLionel Sambuc #ifndef MOVEONLY_H
114684ddb6SLionel Sambuc #define MOVEONLY_H
124684ddb6SLionel Sambuc 
134684ddb6SLionel Sambuc #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
144684ddb6SLionel Sambuc 
154684ddb6SLionel Sambuc #include <cstddef>
164684ddb6SLionel Sambuc #include <functional>
174684ddb6SLionel Sambuc 
184684ddb6SLionel Sambuc class MoveOnly
194684ddb6SLionel Sambuc {
204684ddb6SLionel Sambuc     MoveOnly(const MoveOnly&);
214684ddb6SLionel Sambuc     MoveOnly& operator=(const MoveOnly&);
224684ddb6SLionel Sambuc 
234684ddb6SLionel Sambuc     int data_;
244684ddb6SLionel Sambuc public:
data_(data)254684ddb6SLionel Sambuc     MoveOnly(int data = 1) : data_(data) {}
MoveOnly(MoveOnly && x)264684ddb6SLionel Sambuc     MoveOnly(MoveOnly&& x)
274684ddb6SLionel Sambuc         : data_(x.data_) {x.data_ = 0;}
284684ddb6SLionel Sambuc     MoveOnly& operator=(MoveOnly&& x)
294684ddb6SLionel Sambuc         {data_ = x.data_; x.data_ = 0; return *this;}
304684ddb6SLionel Sambuc 
get()314684ddb6SLionel Sambuc     int get() const {return data_;}
324684ddb6SLionel Sambuc 
334684ddb6SLionel Sambuc     bool operator==(const MoveOnly& x) const {return data_ == x.data_;}
344684ddb6SLionel Sambuc     bool operator< (const MoveOnly& x) const {return data_ <  x.data_;}
354684ddb6SLionel Sambuc };
364684ddb6SLionel Sambuc 
374684ddb6SLionel Sambuc namespace std {
384684ddb6SLionel Sambuc 
394684ddb6SLionel Sambuc template <>
404684ddb6SLionel Sambuc struct hash<MoveOnly>
414684ddb6SLionel Sambuc     : public std::unary_function<MoveOnly, std::size_t>
424684ddb6SLionel Sambuc {
434684ddb6SLionel Sambuc     std::size_t operator()(const MoveOnly& x) const {return x.get();}
444684ddb6SLionel Sambuc };
454684ddb6SLionel Sambuc 
464684ddb6SLionel Sambuc }
474684ddb6SLionel Sambuc 
484684ddb6SLionel Sambuc #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
494684ddb6SLionel Sambuc 
504684ddb6SLionel Sambuc #endif  // MOVEONLY_H
51