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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef MOVEONLY_H
#define MOVEONLY_H
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
#include <cstddef>
#include <functional>
class MoveOnly
{
MoveOnly(const MoveOnly&);
MoveOnly& operator=(const MoveOnly&);
int data_;
public:
MoveOnly(int data = 1) : data_(data) {}
MoveOnly(MoveOnly&& x)
: data_(x.data_) {x.data_ = 0;}
MoveOnly& operator=(MoveOnly&& x)
{data_ = x.data_; x.data_ = 0; return *this;}
int get() const {return data_;}
bool operator==(const MoveOnly& x) const {return data_ == x.data_;}
bool operator< (const MoveOnly& x) const {return data_ < x.data_;}
};
namespace std {
template <>
struct hash<MoveOnly>
: public std::unary_function<MoveOnly, std::size_t>
{
std::size_t operator()(const MoveOnly& x) const {return x.get();}
};
}
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#endif // MOVEONLY_H
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