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 EMPLACEABLE_H 11 #define EMPLACEABLE_H 12 13 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES 14 15 class Emplaceable 16 { 17 #if !defined(__clang__) 18 // GCC 4.8 when compile ccontainers/unord/unord.map/unorder.map.modifiers/emplace_hint.pass.cpp, etc, 19 // complains about the following being private 20 public: 21 Emplaceable(const Emplaceable&) {} 22 #else 23 Emplaceable(const Emplaceable&); 24 #endif 25 Emplaceable& operator=(const Emplaceable&); 26 27 int int_; 28 double double_; 29 public: 30 Emplaceable() : int_(0), double_(0) {} 31 Emplaceable(int i, double d) : int_(i), double_(d) {} 32 Emplaceable(Emplaceable&& x) 33 : int_(x.int_), double_(x.double_) 34 {x.int_ = 0; x.double_ = 0;} 35 Emplaceable& operator=(Emplaceable&& x) 36 {int_ = x.int_; x.int_ = 0; 37 double_ = x.double_; x.double_ = 0; 38 return *this;} 39 40 bool operator==(const Emplaceable& x) const 41 {return int_ == x.int_ && double_ == x.double_;} 42 bool operator<(const Emplaceable& x) const 43 {return int_ < x.int_ || (int_ == x.int_ && double_ < x.double_);} 44 45 int get() const {return int_;} 46 }; 47 48 namespace std { 49 50 template <> 51 struct hash<Emplaceable> 52 : public std::unary_function<Emplaceable, std::size_t> 53 { 54 std::size_t operator()(const Emplaceable& x) const {return x.get();} 55 }; 56 57 } 58 59 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES 60 61 #endif // EMPLACEABLE_H 62
