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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"
#include <cstddef>
#include <functional>
class MoveOnly
{
int data_;
public:
TEST_CONSTEXPR MoveOnly(int data = 1) : data_(data) {}
MoveOnly(const MoveOnly&) = delete;
MoveOnly& operator=(const MoveOnly&) = delete;
TEST_CONSTEXPR_CXX14 MoveOnly(MoveOnly&& x) TEST_NOEXCEPT
: data_(x.data_) {x.data_ = 0;}
TEST_CONSTEXPR_CXX14 MoveOnly& operator=(MoveOnly&& x)
{data_ = x.data_; x.data_ = 0; return *this;}
TEST_CONSTEXPR int get() const {return data_;}
friend TEST_CONSTEXPR bool operator==(const MoveOnly& x, const MoveOnly& y)
{ return x.data_ == y.data_; }
friend TEST_CONSTEXPR bool operator!=(const MoveOnly& x, const MoveOnly& y)
{ return x.data_ != y.data_; }
friend TEST_CONSTEXPR bool operator< (const MoveOnly& x, const MoveOnly& y)
{ return x.data_ < y.data_; }
friend TEST_CONSTEXPR bool operator<=(const MoveOnly& x, const MoveOnly& y)
{ return x.data_ <= y.data_; }
friend TEST_CONSTEXPR bool operator> (const MoveOnly& x, const MoveOnly& y)
{ return x.data_ > y.data_; }
friend TEST_CONSTEXPR bool operator>=(const MoveOnly& x, const MoveOnly& y)
{ return x.data_ >= y.data_; }
#if TEST_STD_VER > 17
friend constexpr auto operator<=>(const MoveOnly&, const MoveOnly&) = default;
#endif // TEST_STD_VER > 17
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_); }
template<class T, class U>
friend void operator,(T t, U u) = delete;
};
template <>
struct std::hash<MoveOnly>
{
typedef MoveOnly argument_type;
typedef std::size_t result_type;
TEST_CONSTEXPR std::size_t operator()(const MoveOnly& x) const {return static_cast<size_t>(x.get());}
};
#endif // MOVEONLY_H
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