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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef MOVEONLY_H
#define MOVEONLY_H
#include "test_macros.h"
#if TEST_STD_VER >= 11
#include <cstddef>
#include <functional>
class MoveOnly
{
MoveOnly(const MoveOnly&);
MoveOnly& operator=(const MoveOnly&);
int data_;
public:
constexpr MoveOnly(int data = 1) : data_(data) {}
TEST_CONSTEXPR_CXX14 MoveOnly(MoveOnly&& x)
: data_(x.data_) {x.data_ = 0;}
TEST_CONSTEXPR_CXX14 MoveOnly& operator=(MoveOnly&& x)
{data_ = x.data_; x.data_ = 0; return *this;}
constexpr int get() const {return data_;}
constexpr bool operator==(const MoveOnly& x) const {return data_ == x.data_;}
constexpr bool operator< (const MoveOnly& x) const {return data_ < x.data_;}
TEST_CONSTEXPR_CXX14 MoveOnly operator+(const MoveOnly& x) const
{ return MoveOnly{data_ + x.data_}; }
TEST_CONSTEXPR_CXX14 MoveOnly operator*(const MoveOnly& x) const
{ return MoveOnly{data_ * x.data_}; }
};
namespace std {
template <>
struct hash<MoveOnly>
{
typedef MoveOnly argument_type;
typedef size_t result_type;
constexpr std::size_t operator()(const MoveOnly& x) const {return x.get();}
};
}
#endif // TEST_STD_VER >= 11
#endif // MOVEONLY_H
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