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 15class 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 20public: 21 Emplaceable(const Emplaceable&) {} 22#else 23 Emplaceable(const Emplaceable&); 24#endif 25 Emplaceable& operator=(const Emplaceable&); 26 27 int int_; 28 double double_; 29public: 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 48namespace std { 49 50template <> 51struct 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