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1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef MOVEONLY_H10#define MOVEONLY_H11 12#include "test_macros.h"13 14#include <cstddef>15#include <functional>16 17class MoveOnly18{19 int data_;20public:21 TEST_CONSTEXPR MoveOnly(int data = 1) : data_(data) {}22 23 MoveOnly(const MoveOnly&) = delete;24 MoveOnly& operator=(const MoveOnly&) = delete;25 26 TEST_CONSTEXPR_CXX14 MoveOnly(MoveOnly&& x) TEST_NOEXCEPT27 : data_(x.data_) {x.data_ = 0;}28 TEST_CONSTEXPR_CXX14 MoveOnly& operator=(MoveOnly&& x)29 {data_ = x.data_; x.data_ = 0; return *this;}30 31 TEST_CONSTEXPR int get() const {return data_;}32 33 friend TEST_CONSTEXPR bool operator==(const MoveOnly& x, const MoveOnly& y)34 { return x.data_ == y.data_; }35 friend TEST_CONSTEXPR bool operator!=(const MoveOnly& x, const MoveOnly& y)36 { return x.data_ != y.data_; }37 friend TEST_CONSTEXPR bool operator< (const MoveOnly& x, const MoveOnly& y)38 { return x.data_ < y.data_; }39 friend TEST_CONSTEXPR bool operator<=(const MoveOnly& x, const MoveOnly& y)40 { return x.data_ <= y.data_; }41 friend TEST_CONSTEXPR bool operator> (const MoveOnly& x, const MoveOnly& y)42 { return x.data_ > y.data_; }43 friend TEST_CONSTEXPR bool operator>=(const MoveOnly& x, const MoveOnly& y)44 { return x.data_ >= y.data_; }45 46#if TEST_STD_VER > 1747 friend constexpr auto operator<=>(const MoveOnly&, const MoveOnly&) = default;48#endif // TEST_STD_VER > 1749 50 TEST_CONSTEXPR_CXX14 MoveOnly operator+(const MoveOnly& x) const51 { return MoveOnly(data_ + x.data_); }52 TEST_CONSTEXPR_CXX14 MoveOnly operator*(const MoveOnly& x) const53 { return MoveOnly(data_ * x.data_); }54 55 template<class T>56 friend void operator,(MoveOnly const&, T) = delete;57 58 template<class T>59 friend void operator,(T, MoveOnly const&) = delete;60};61 62template <>63struct std::hash<MoveOnly>64{65 typedef MoveOnly argument_type;66 typedef std::size_t result_type;67 TEST_CONSTEXPR std::size_t operator()(const MoveOnly& x) const {return static_cast<size_t>(x.get());}68};69 70class TrivialMoveOnly {71 int data_;72 73 public:74 TEST_CONSTEXPR TrivialMoveOnly(int data = 1) : data_(data) {}75 76 TrivialMoveOnly(const TrivialMoveOnly&) = delete;77 TrivialMoveOnly& operator=(const TrivialMoveOnly&) = delete;78 79 TrivialMoveOnly(TrivialMoveOnly&&) = default;80 TrivialMoveOnly& operator=(TrivialMoveOnly&&) = default;81 82 TEST_CONSTEXPR int get() const { return data_; }83 84 friend TEST_CONSTEXPR bool operator==(const TrivialMoveOnly& x, const TrivialMoveOnly& y) {85 return x.data_ == y.data_;86 }87 friend TEST_CONSTEXPR bool operator!=(const TrivialMoveOnly& x, const TrivialMoveOnly& y) {88 return x.data_ != y.data_;89 }90 friend TEST_CONSTEXPR bool operator<(const TrivialMoveOnly& x, const TrivialMoveOnly& y) {91 return x.data_ < y.data_;92 }93 friend TEST_CONSTEXPR bool operator<=(const TrivialMoveOnly& x, const TrivialMoveOnly& y) {94 return x.data_ <= y.data_;95 }96 friend TEST_CONSTEXPR bool operator>(const TrivialMoveOnly& x, const TrivialMoveOnly& y) {97 return x.data_ > y.data_;98 }99 friend TEST_CONSTEXPR bool operator>=(const TrivialMoveOnly& x, const TrivialMoveOnly& y) {100 return x.data_ >= y.data_;101 }102 103#if TEST_STD_VER > 17104 friend constexpr auto operator<=>(const TrivialMoveOnly&, const TrivialMoveOnly&) = default;105#endif // TEST_STD_VER > 17106 107 TEST_CONSTEXPR_CXX14 TrivialMoveOnly operator+(const TrivialMoveOnly& x) const {108 return TrivialMoveOnly(data_ + x.data_);109 }110 TEST_CONSTEXPR_CXX14 TrivialMoveOnly operator*(const TrivialMoveOnly& x) const {111 return TrivialMoveOnly(data_ * x.data_);112 }113 114 template<class T>115 friend void operator,(TrivialMoveOnly const&, T) = delete;116 117 template<class T>118 friend void operator,(T, TrivialMoveOnly const&) = delete;119};120 121template <>122struct std::hash<TrivialMoveOnly> {123 typedef TrivialMoveOnly argument_type;124 typedef std::size_t result_type;125 TEST_CONSTEXPR std::size_t operator()(const TrivialMoveOnly& x) const { return static_cast<size_t>(x.get()); }126};127 128#endif // MOVEONLY_H129