external/bsd/libc++/dist/libcxx/test/containers/MoveOnly.h

   1 #ifndef MOVEONLY_H
   2 #define MOVEONLY_H
   3
   4 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
   5
   6 #include <cstddef>
   7 #include <functional>
   8
   9 class MoveOnly
  10 {
  11     MoveOnly(const MoveOnly&);
  12     MoveOnly& operator=(const MoveOnly&);
  13
  14     int data_;
  15 public:
  16     MoveOnly(int data = 1) : data_(data) {}
  17     MoveOnly(MoveOnly&& x)
  18         : data_(x.data_) {x.data_ = 0;}
  19     MoveOnly& operator=(MoveOnly&& x)
  20         {data_ = x.data_; x.data_ = 0; return *this;}
  21
  22     int get() const {return data_;}
  23
  24     bool operator==(const MoveOnly& x) const {return data_ == x.data_;}
  25     bool operator< (const MoveOnly& x) const {return data_ <  x.data_;}
  26 };
  27
  28 namespace std {
  29
  30 template <>
  31 struct hash<MoveOnly>
  32     : public std::unary_function<MoveOnly, std::size_t>
  33 {
  34     std::size_t operator()(const MoveOnly& x) const {return x.get();}
  35 };
  36
  37 }
  38
  39 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
  40
  41 #endif  // MOVEONLY_H