1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef MOVEONLY_H 11 #define MOVEONLY_H 12 13 #include "test_macros.h" 14 15 #if TEST_STD_VER >= 11 16 17 #include <cstddef> 18 #include <functional> 19 20 class MoveOnly 21 { 22 MoveOnly(const MoveOnly&); 23 MoveOnly& operator=(const MoveOnly&); 24 25 int data_; 26 public: 27 MoveOnly(int data = 1) : data_(data) {} 28 MoveOnly(MoveOnly&& x) 29 : data_(x.data_) {x.data_ = 0;} 30 MoveOnly& operator=(MoveOnly&& x) 31 {data_ = x.data_; x.data_ = 0; return *this;} 32 33 int get() const {return data_;} 34 35 bool operator==(const MoveOnly& x) const {return data_ == x.data_;} 36 bool operator< (const MoveOnly& x) const {return data_ < x.data_;} 37 MoveOnly operator+(const MoveOnly& x) const { return MoveOnly{data_ + x.data_}; } 38 MoveOnly operator*(const MoveOnly& x) const { return MoveOnly{data_ * x.data_}; } 39 }; 40 41 namespace std { 42 43 template <> 44 struct hash<MoveOnly> 45 { 46 typedef MoveOnly argument_type; 47 typedef size_t result_type; 48 std::size_t operator()(const MoveOnly& x) const {return x.get();} 49 }; 50 51 } 52 53 #endif // TEST_STD_VER >= 11 54 55 #endif // MOVEONLY_H 56
