79df8e19be
Reviewed By: ldionne, #libc, huixie90 Spies: huixie90, libcxx-commits, mgorny Differential Revision: https://reviews.llvm.org/D131898
69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef MOVEONLY_H
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#define MOVEONLY_H
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#include "test_macros.h"
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#include <cstddef>
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#include <functional>
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class MoveOnly
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{
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int data_;
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public:
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TEST_CONSTEXPR MoveOnly(int data = 1) : data_(data) {}
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MoveOnly(const MoveOnly&) = delete;
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MoveOnly& operator=(const MoveOnly&) = delete;
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TEST_CONSTEXPR_CXX14 MoveOnly(MoveOnly&& x) TEST_NOEXCEPT
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: data_(x.data_) {x.data_ = 0;}
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TEST_CONSTEXPR_CXX14 MoveOnly& operator=(MoveOnly&& x)
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{data_ = x.data_; x.data_ = 0; return *this;}
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TEST_CONSTEXPR int get() const {return data_;}
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friend TEST_CONSTEXPR bool operator==(const MoveOnly& x, const MoveOnly& y)
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{ return x.data_ == y.data_; }
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friend TEST_CONSTEXPR bool operator!=(const MoveOnly& x, const MoveOnly& y)
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{ return x.data_ != y.data_; }
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friend TEST_CONSTEXPR bool operator< (const MoveOnly& x, const MoveOnly& y)
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{ return x.data_ < y.data_; }
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friend TEST_CONSTEXPR bool operator<=(const MoveOnly& x, const MoveOnly& y)
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{ return x.data_ <= y.data_; }
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friend TEST_CONSTEXPR bool operator> (const MoveOnly& x, const MoveOnly& y)
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{ return x.data_ > y.data_; }
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friend TEST_CONSTEXPR bool operator>=(const MoveOnly& x, const MoveOnly& y)
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{ return x.data_ >= y.data_; }
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#if TEST_STD_VER > 17
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friend constexpr auto operator<=>(const MoveOnly&, const MoveOnly&) = default;
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#endif // TEST_STD_VER > 17
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TEST_CONSTEXPR_CXX14 MoveOnly operator+(const MoveOnly& x) const
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{ return MoveOnly(data_ + x.data_); }
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TEST_CONSTEXPR_CXX14 MoveOnly operator*(const MoveOnly& x) const
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{ return MoveOnly(data_ * x.data_); }
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template<class T, class U>
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friend void operator,(T t, U u) = delete;
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};
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template <>
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struct std::hash<MoveOnly>
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{
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typedef MoveOnly argument_type;
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typedef size_t result_type;
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TEST_CONSTEXPR size_t operator()(const MoveOnly& x) const {return static_cast<size_t>(x.get());}
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};
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#endif // MOVEONLY_H
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