forked from OSchip/llvm-project
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef EMPLACEABLE_H
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#define EMPLACEABLE_H
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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class Emplaceable
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{
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Emplaceable(const Emplaceable&);
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Emplaceable& operator=(const Emplaceable&);
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int int_;
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double double_;
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public:
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Emplaceable() : int_(0), double_(0) {}
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Emplaceable(int i, double d) : int_(i), double_(d) {}
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Emplaceable(Emplaceable&& x)
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: int_(x.int_), double_(x.double_)
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{x.int_ = 0; x.double_ = 0;}
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Emplaceable& operator=(Emplaceable&& x)
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{int_ = x.int_; x.int_ = 0;
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double_ = x.double_; x.double_ = 0;
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return *this;}
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bool operator==(const Emplaceable& x) const
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{return int_ == x.int_ && double_ == x.double_;}
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bool operator<(const Emplaceable& x) const
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{return int_ < x.int_ || (int_ == x.int_ && double_ < x.double_);}
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int get() const {return int_;}
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};
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namespace std {
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template <>
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struct hash<Emplaceable>
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: public std::unary_function<Emplaceable, std::size_t>
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{
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std::size_t operator()(const Emplaceable& x) const {return x.get();}
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};
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}
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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#endif // EMPLACEABLE_H
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