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 friend class MoveOnly2; 23 MoveOnly(const MoveOnly&); 24 MoveOnly& operator=(const MoveOnly&); 25 26 int data_; 27 public: 28 MoveOnly(int data = 1) : data_(data) {} 29 MoveOnly(MoveOnly&& x) 30 : data_(x.data_) {x.data_ = 0;} 31 MoveOnly& operator=(MoveOnly&& x) 32 {data_ = x.data_; x.data_ = 0; return *this;} 33 34 int get() const {return data_;} 35 36 bool operator==(const MoveOnly& x) const {return data_ == x.data_;} 37 bool operator< (const MoveOnly& x) const {return data_ < x.data_;} 38 }; 39 40 namespace std { 41 42 template <> 43 struct hash<MoveOnly> 44 { 45 typedef MoveOnly argument_type; 46 typedef size_t result_type; 47 std::size_t operator()(const MoveOnly& x) const {return x.get();} 48 }; 49 50 } 51 52 #endif // TEST_STD_VER >= 11 53 54 #endif // MOVEONLY_H 55
