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			724 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			724 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
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// Copyright 2006-2009 Daniel James.
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// Copyright 2022 Christian Mazakas
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#if !defined(BOOST_UNORDERED_TEST_OBJECTS_HEADER)
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#define BOOST_UNORDERED_TEST_OBJECTS_HEADER
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#include "../helpers/count.hpp"
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#include "../helpers/fwd.hpp"
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#include "../helpers/memory.hpp"
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#include <boost/config.hpp>
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#include <boost/limits.hpp>
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#include <cstddef>
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namespace test {
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  // Note that the default hash function will work for any equal_to (but not
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  // very well).
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  class object;
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  class movable;
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  class implicitly_convertible;
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  class hash;
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  class less;
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  class equal_to;
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  template <class T> class allocator1;
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  template <class T> class allocator2;
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  object generate(object const*, random_generator);
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  movable generate(movable const*, random_generator);
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  implicitly_convertible generate(
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    implicitly_convertible const*, random_generator);
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  inline void ignore_variable(void const*) {}
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  class object : private counted_object
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  {
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    friend class hash;
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    friend class equal_to;
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    friend class less;
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    int tag1_, tag2_;
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  public:
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    explicit object(int t1 = 0, int t2 = 0) : tag1_(t1), tag2_(t2) {}
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    ~object()
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    {
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      tag1_ = -1;
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      tag2_ = -1;
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    }
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    friend bool operator==(object const& x1, object const& x2)
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    {
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      return x1.tag1_ == x2.tag1_ && x1.tag2_ == x2.tag2_;
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    }
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    friend bool operator!=(object const& x1, object const& x2)
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    {
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      return x1.tag1_ != x2.tag1_ || x1.tag2_ != x2.tag2_;
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    }
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    friend bool operator<(object const& x1, object const& x2)
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    {
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      return x1.tag1_ < x2.tag1_ ||
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             (x1.tag1_ == x2.tag1_ && x1.tag2_ < x2.tag2_);
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    }
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    friend object generate(object const*, random_generator g)
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    {
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      int* x = 0;
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      return object(generate(x, g), generate(x, g));
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    }
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    friend std::ostream& operator<<(std::ostream& out, object const& o)
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    {
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      return out << "(" << o.tag1_ << "," << o.tag2_ << ")";
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    }
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  };
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  class movable : private counted_object
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  {
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    friend class hash;
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    friend class equal_to;
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    friend class less;
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    int tag1_, tag2_;
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    BOOST_COPYABLE_AND_MOVABLE(movable)
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  public:
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    explicit movable(int t1 = 0, int t2 = 0) : tag1_(t1), tag2_(t2) {}
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    movable(movable const& x)
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        : counted_object(x), tag1_(x.tag1_), tag2_(x.tag2_)
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    {
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      BOOST_TEST(x.tag1_ != -1);
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    }
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    movable(BOOST_RV_REF(movable) x)
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        : counted_object(x), tag1_(x.tag1_), tag2_(x.tag2_)
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    {
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      BOOST_TEST(x.tag1_ != -1);
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      x.tag1_ = -1;
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      x.tag2_ = -1;
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    }
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    movable& operator=(BOOST_COPY_ASSIGN_REF(movable) x) // Copy assignment
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    {
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      BOOST_TEST(x.tag1_ != -1);
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      tag1_ = x.tag1_;
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      tag2_ = x.tag2_;
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      return *this;
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    }
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    movable& operator=(BOOST_RV_REF(movable) x) // Move assignment
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    {
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      BOOST_TEST(x.tag1_ != -1);
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      tag1_ = x.tag1_;
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      tag2_ = x.tag2_;
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      x.tag1_ = -1;
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      x.tag2_ = -1;
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      return *this;
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    }
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    ~movable()
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    {
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      tag1_ = -1;
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      tag2_ = -1;
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    }
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    friend bool operator==(movable const& x1, movable const& x2)
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    {
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      BOOST_TEST(x1.tag1_ != -1 && x2.tag1_ != -1);
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      return x1.tag1_ == x2.tag1_ && x1.tag2_ == x2.tag2_;
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    }
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    friend bool operator!=(movable const& x1, movable const& x2)
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    {
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      BOOST_TEST(x1.tag1_ != -1 && x2.tag1_ != -1);
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      return x1.tag1_ != x2.tag1_ || x1.tag2_ != x2.tag2_;
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    }
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    friend bool operator<(movable const& x1, movable const& x2)
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    {
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      BOOST_TEST(x1.tag1_ != -1 && x2.tag1_ != -1);
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      return x1.tag1_ < x2.tag1_ ||
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             (x1.tag1_ == x2.tag1_ && x1.tag2_ < x2.tag2_);
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    }
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    friend movable generate(movable const*, random_generator g)
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    {
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      int* x = 0;
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      return movable(generate(x, g), generate(x, g));
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    }
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    friend std::ostream& operator<<(std::ostream& out, movable const& o)
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    {
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      return out << "(" << o.tag1_ << "," << o.tag2_ << ")";
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    }
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  };
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  class implicitly_convertible : private counted_object
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  {
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    int tag1_, tag2_;
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  public:
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    explicit implicitly_convertible(int t1 = 0, int t2 = 0)
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        : tag1_(t1), tag2_(t2)
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    {
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    }
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    operator object() const { return object(tag1_, tag2_); }
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    operator movable() const { return movable(tag1_, tag2_); }
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    friend implicitly_convertible generate(
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      implicitly_convertible const*, random_generator g)
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    {
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      int* x = 0;
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      return implicitly_convertible(generate(x, g), generate(x, g));
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    }
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    friend std::ostream& operator<<(
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      std::ostream& out, implicitly_convertible const& o)
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    {
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      return out << "(" << o.tag1_ << "," << o.tag2_ << ")";
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    }
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  };
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  // Note: This is a deliberately bad hash function.
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  class hash BOOST_FINAL
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  {
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    int type_;
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  public:
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    hash() : type_(0) {}
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    explicit hash(int t) : type_(t) {}
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    std::size_t operator()(object const& x) const
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    {
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      unsigned result;
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      switch (type_) {
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      case 1:
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        result = static_cast<unsigned>(x.tag1_);
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        break;
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      case 2:
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        result = static_cast<unsigned>(x.tag2_);
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        break;
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      default:
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        result =
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          static_cast<unsigned>(x.tag1_) + static_cast<unsigned>(x.tag2_);
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      }
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      return result;
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    }
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    std::size_t operator()(movable const& x) const
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    {
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      unsigned result;
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      switch (type_) {
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      case 1:
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        result = static_cast<unsigned>(x.tag1_);
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        break;
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      case 2:
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        result = static_cast<unsigned>(x.tag2_);
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        break;
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      default:
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        result =
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          static_cast<unsigned>(x.tag1_) + static_cast<unsigned>(x.tag2_);
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      }
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      return result;
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    }
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    std::size_t operator()(int x) const
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    {
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      int result;
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      switch (type_) {
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      case 1:
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        result = x;
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        break;
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      case 2:
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        result = x * 7;
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        break;
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      default:
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        result = x * 256;
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      }
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      return static_cast<std::size_t>(result);
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    }
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    friend bool operator==(hash const& x1, hash const& x2)
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    {
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      return x1.type_ == x2.type_;
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    }
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    friend bool operator!=(hash const& x1, hash const& x2)
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    {
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      return x1.type_ != x2.type_;
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    }
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  };
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  std::size_t hash_value(test::object const& x) { return hash()(x); }
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  std::size_t hash_value(test::movable const& x) { return hash()(x); }
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  class less
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  {
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    int type_;
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  public:
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    explicit less(int t = 0) : type_(t) {}
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    bool operator()(object const& x1, object const& x2) const
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    {
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      switch (type_) {
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      case 1:
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        return x1.tag1_ < x2.tag1_;
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      case 2:
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        return x1.tag2_ < x2.tag2_;
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      default:
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        return x1 < x2;
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      }
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    }
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    bool operator()(movable const& x1, movable const& x2) const
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    {
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      switch (type_) {
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      case 1:
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        return x1.tag1_ < x2.tag1_;
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      case 2:
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        return x1.tag2_ < x2.tag2_;
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      default:
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        return x1 < x2;
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      }
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    }
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    bool operator()(int x1, int x2) const { return x1 < x2; }
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    friend bool operator==(less const& x1, less const& x2)
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    {
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      return x1.type_ == x2.type_;
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    }
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  };
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  class equal_to BOOST_FINAL
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  {
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    int type_;
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  public:
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    equal_to() : type_(0) {}
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    explicit equal_to(int t) : type_(t) {}
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    bool operator()(object const& x1, object const& x2) const
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    {
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      switch (type_) {
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      case 1:
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        return x1.tag1_ == x2.tag1_;
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      case 2:
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        return x1.tag2_ == x2.tag2_;
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      default:
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        return x1 == x2;
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      }
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    }
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    bool operator()(movable const& x1, movable const& x2) const
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    {
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      switch (type_) {
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      case 1:
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        return x1.tag1_ == x2.tag1_;
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      case 2:
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        return x1.tag2_ == x2.tag2_;
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      default:
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        return x1 == x2;
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      }
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    }
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    bool operator()(int x1, int x2) const { return x1 == x2; }
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    friend bool operator==(equal_to const& x1, equal_to const& x2)
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    {
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      return x1.type_ == x2.type_;
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    }
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    friend bool operator!=(equal_to const& x1, equal_to const& x2)
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    {
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      return x1.type_ != x2.type_;
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    }
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    friend less create_compare(equal_to x) { return less(x.type_); }
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  };
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  // allocator1 only has the old fashioned 'construct' method and has
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  // a few less typedefs. allocator2 uses a custom pointer class.
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  template <class T> class allocator1
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  {
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  public:
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    int tag_;
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    typedef T value_type;
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    template <class U> struct rebind
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    {
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      typedef allocator1<U> other;
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    };
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    allocator1() : tag_(0) { detail::tracker.allocator_ref(); }
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    explicit allocator1(int t) : tag_(t) { detail::tracker.allocator_ref(); }
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    template <class Y> allocator1(allocator1<Y> const& x) : tag_(x.tag_)
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    {
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      detail::tracker.allocator_ref();
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    }
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    allocator1(allocator1 const& x) : tag_(x.tag_)
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    {
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      detail::tracker.allocator_ref();
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    }
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    ~allocator1() { detail::tracker.allocator_unref(); }
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    T* allocate(std::size_t n)
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    {
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      T* ptr(static_cast<T*>(::operator new(n * sizeof(T))));
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      detail::tracker.track_allocate((void*)ptr, n, sizeof(T), tag_);
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      return ptr;
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    }
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    T* allocate(std::size_t n, void const*)
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    {
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      T* ptr(static_cast<T*>(::operator new(n * sizeof(T))));
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      detail::tracker.track_allocate((void*)ptr, n, sizeof(T), tag_);
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      return ptr;
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    }
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    void deallocate(T* p, std::size_t n)
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    {
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      detail::tracker.track_deallocate((void*)p, n, sizeof(T), tag_);
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      ::operator delete((void*)p);
 | 
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    }
 | 
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#if BOOST_UNORDERED_CXX11_CONSTRUCTION
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    template <typename U, typename... Args> void construct(U* p, Args&&... args)
 | 
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    {
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      detail::tracker.track_construct((void*)p, sizeof(U), tag_);
 | 
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      new (p) U(boost::forward<Args>(args)...);
 | 
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    }
 | 
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 | 
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    template <typename U> void destroy(U* p)
 | 
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    {
 | 
						|
      detail::tracker.track_destroy((void*)p, sizeof(U), tag_);
 | 
						|
      p->~U();
 | 
						|
 | 
						|
      // Work around MSVC buggy unused parameter warning.
 | 
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      ignore_variable(&p);
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    }
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#else
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  private:
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						|
    // I'm going to claim in the documentation that construct/destroy
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    // is never used when C++11 support isn't available, so might as
 | 
						|
    // well check that in the text.
 | 
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    // TODO: Or maybe just disallow them for values?
 | 
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    template <typename U> void construct(U* p);
 | 
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    template <typename U, typename A0> void construct(U* p, A0 const&);
 | 
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    template <typename U, typename A0, typename A1>
 | 
						|
    void construct(U* p, A0 const&, A1 const&);
 | 
						|
    template <typename U, typename A0, typename A1, typename A2>
 | 
						|
    void construct(U* p, A0 const&, A1 const&, A2 const&);
 | 
						|
    template <typename U> void destroy(U* p);
 | 
						|
 | 
						|
  public:
 | 
						|
#endif
 | 
						|
 | 
						|
    bool operator==(allocator1 const& x) const { return tag_ == x.tag_; }
 | 
						|
 | 
						|
    bool operator!=(allocator1 const& x) const { return tag_ != x.tag_; }
 | 
						|
 | 
						|
    enum
 | 
						|
    {
 | 
						|
      is_select_on_copy = false,
 | 
						|
      is_propagate_on_swap = false,
 | 
						|
      is_propagate_on_assign = false,
 | 
						|
      is_propagate_on_move = false
 | 
						|
    };
 | 
						|
  };
 | 
						|
 | 
						|
  template <class T> class ptr;
 | 
						|
  template <class T> class const_ptr;
 | 
						|
 | 
						|
  struct void_ptr
 | 
						|
  {
 | 
						|
#if !defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS)
 | 
						|
    template <typename T> friend class ptr;
 | 
						|
 | 
						|
  private:
 | 
						|
#endif
 | 
						|
 | 
						|
    void* ptr_;
 | 
						|
 | 
						|
  public:
 | 
						|
    void_ptr() : ptr_(0) {}
 | 
						|
 | 
						|
    template <typename T> explicit void_ptr(ptr<T> const& x) : ptr_(x.ptr_) {}
 | 
						|
 | 
						|
    // I'm not using the safe bool idiom because the containers should be
 | 
						|
    // able to cope with bool conversions.
 | 
						|
    operator bool() const { return !!ptr_; }
 | 
						|
 | 
						|
    bool operator==(void_ptr const& x) const { return ptr_ == x.ptr_; }
 | 
						|
    bool operator!=(void_ptr const& x) const { return ptr_ != x.ptr_; }
 | 
						|
  };
 | 
						|
 | 
						|
  class void_const_ptr
 | 
						|
  {
 | 
						|
#if !defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS)
 | 
						|
    template <typename T> friend class const_ptr;
 | 
						|
 | 
						|
  private:
 | 
						|
#endif
 | 
						|
 | 
						|
    void* ptr_;
 | 
						|
 | 
						|
  public:
 | 
						|
    void_const_ptr() : ptr_(0) {}
 | 
						|
 | 
						|
    template <typename T>
 | 
						|
    explicit void_const_ptr(const_ptr<T> const& x) : ptr_(x.ptr_)
 | 
						|
    {
 | 
						|
    }
 | 
						|
 | 
						|
    // I'm not using the safe bool idiom because the containers should be
 | 
						|
    // able to cope with bool conversions.
 | 
						|
    operator bool() const { return !!ptr_; }
 | 
						|
 | 
						|
    bool operator==(void_const_ptr const& x) const { return ptr_ == x.ptr_; }
 | 
						|
    bool operator!=(void_const_ptr const& x) const { return ptr_ != x.ptr_; }
 | 
						|
  };
 | 
						|
 | 
						|
  template <class T> class ptr
 | 
						|
  {
 | 
						|
    friend class allocator2<T>;
 | 
						|
    friend class const_ptr<T>;
 | 
						|
    friend struct void_ptr;
 | 
						|
 | 
						|
  public:
 | 
						|
    T* ptr_;
 | 
						|
    ptr(T* x) : ptr_(x) {}
 | 
						|
    ptr() : ptr_(0) {}
 | 
						|
    explicit ptr(void_ptr const& x) : ptr_((T*)x.ptr_) {}
 | 
						|
 | 
						|
    T& operator*() const { return *ptr_; }
 | 
						|
    T* operator->() const { return ptr_; }
 | 
						|
    ptr& operator++()
 | 
						|
    {
 | 
						|
      ++ptr_;
 | 
						|
      return *this;
 | 
						|
    }
 | 
						|
    ptr operator++(int)
 | 
						|
    {
 | 
						|
      ptr tmp(*this);
 | 
						|
      ++ptr_;
 | 
						|
      return tmp;
 | 
						|
    }
 | 
						|
 | 
						|
    ptr operator+(std::ptrdiff_t s) const { return ptr<T>(ptr_ + s); }
 | 
						|
    friend ptr operator+(std::ptrdiff_t s, ptr p) { return ptr<T>(s + p.ptr_); }
 | 
						|
 | 
						|
    std::ptrdiff_t operator-(ptr p) const { return ptr_ - p.ptr_; }
 | 
						|
    ptr operator-(std::ptrdiff_t s) const { return ptr(ptr_ - s); }
 | 
						|
 | 
						|
    ptr& operator+=(std::ptrdiff_t s) { ptr_ += s; return *this; }
 | 
						|
 | 
						|
    T& operator[](std::ptrdiff_t s) const { return ptr_[s]; }
 | 
						|
    bool operator!() const { return !ptr_; }
 | 
						|
 | 
						|
    static ptr pointer_to(T& p) {
 | 
						|
      return ptr(&p);
 | 
						|
    }
 | 
						|
 | 
						|
    // I'm not using the safe bool idiom because the containers should be
 | 
						|
    // able to cope with bool conversions.
 | 
						|
    operator bool() const { return !!ptr_; }
 | 
						|
 | 
						|
    bool operator==(ptr const& x) const { return ptr_ == x.ptr_; }
 | 
						|
    bool operator!=(ptr const& x) const { return ptr_ != x.ptr_; }
 | 
						|
    bool operator<(ptr const& x) const { return ptr_ < x.ptr_; }
 | 
						|
    bool operator>(ptr const& x) const { return ptr_ > x.ptr_; }
 | 
						|
    bool operator<=(ptr const& x) const { return ptr_ <= x.ptr_; }
 | 
						|
    bool operator>=(ptr const& x) const { return ptr_ >= x.ptr_; }
 | 
						|
  };
 | 
						|
 | 
						|
  template <class T> class const_ptr
 | 
						|
  {
 | 
						|
    friend class allocator2<T>;
 | 
						|
    friend struct const_void_ptr;
 | 
						|
 | 
						|
    T const* ptr_;
 | 
						|
 | 
						|
    const_ptr(T const* ptr) : ptr_(ptr) {}
 | 
						|
 | 
						|
  public:
 | 
						|
    const_ptr() : ptr_(0) {}
 | 
						|
    const_ptr(ptr<T> const& x) : ptr_(x.ptr_) {}
 | 
						|
    explicit const_ptr(void_const_ptr const& x) : ptr_((T const*)x.ptr_) {}
 | 
						|
 | 
						|
    T const& operator*() const { return *ptr_; }
 | 
						|
    T const* operator->() const { return ptr_; }
 | 
						|
    const_ptr& operator++()
 | 
						|
    {
 | 
						|
      ++ptr_;
 | 
						|
      return *this;
 | 
						|
    }
 | 
						|
    const_ptr operator++(int)
 | 
						|
    {
 | 
						|
      const_ptr tmp(*this);
 | 
						|
      ++ptr_;
 | 
						|
      return tmp;
 | 
						|
    }
 | 
						|
    const_ptr operator+(std::ptrdiff_t s) const { return const_ptr(ptr_ + s); }
 | 
						|
    friend const_ptr operator+(std::ptrdiff_t s, const_ptr p)
 | 
						|
    {
 | 
						|
      return ptr<T>(s + p.ptr_);
 | 
						|
    }
 | 
						|
    T const& operator[](int s) const { return ptr_[s]; }
 | 
						|
    bool operator!() const { return !ptr_; }
 | 
						|
    operator bool() const { return !!ptr_; }
 | 
						|
 | 
						|
    bool operator==(const_ptr const& x) const { return ptr_ == x.ptr_; }
 | 
						|
    bool operator!=(const_ptr const& x) const { return ptr_ != x.ptr_; }
 | 
						|
    bool operator<(const_ptr const& x) const { return ptr_ < x.ptr_; }
 | 
						|
    bool operator>(const_ptr const& x) const { return ptr_ > x.ptr_; }
 | 
						|
    bool operator<=(const_ptr const& x) const { return ptr_ <= x.ptr_; }
 | 
						|
    bool operator>=(const_ptr const& x) const { return ptr_ >= x.ptr_; }
 | 
						|
  };
 | 
						|
 | 
						|
  template <class T> class allocator2
 | 
						|
  {
 | 
						|
#ifdef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
 | 
						|
  public:
 | 
						|
#else
 | 
						|
    template <class> friend class allocator2;
 | 
						|
#endif
 | 
						|
    int tag_;
 | 
						|
 | 
						|
  public:
 | 
						|
    typedef std::size_t size_type;
 | 
						|
    typedef std::ptrdiff_t difference_type;
 | 
						|
    typedef void_ptr void_pointer;
 | 
						|
    typedef void_const_ptr const_void_pointer;
 | 
						|
    typedef ptr<T> pointer;
 | 
						|
    typedef const_ptr<T> const_pointer;
 | 
						|
    typedef T& reference;
 | 
						|
    typedef T const& const_reference;
 | 
						|
    typedef T value_type;
 | 
						|
 | 
						|
    template <class U> struct rebind
 | 
						|
    {
 | 
						|
      typedef allocator2<U> other;
 | 
						|
    };
 | 
						|
 | 
						|
    allocator2() : tag_(0) { detail::tracker.allocator_ref(); }
 | 
						|
 | 
						|
    explicit allocator2(int t) : tag_(t) { detail::tracker.allocator_ref(); }
 | 
						|
 | 
						|
    template <class Y> allocator2(allocator2<Y> const& x) : tag_(x.tag_)
 | 
						|
    {
 | 
						|
      detail::tracker.allocator_ref();
 | 
						|
    }
 | 
						|
 | 
						|
    allocator2(allocator2 const& x) : tag_(x.tag_)
 | 
						|
    {
 | 
						|
      detail::tracker.allocator_ref();
 | 
						|
    }
 | 
						|
 | 
						|
    ~allocator2() { detail::tracker.allocator_unref(); }
 | 
						|
 | 
						|
    pointer address(reference r) { return pointer(&r); }
 | 
						|
 | 
						|
    const_pointer address(const_reference r) { return const_pointer(&r); }
 | 
						|
 | 
						|
    pointer allocate(size_type n)
 | 
						|
    {
 | 
						|
      pointer p(static_cast<T*>(::operator new(n * sizeof(T))));
 | 
						|
      detail::tracker.track_allocate((void*)p.ptr_, n, sizeof(T), tag_);
 | 
						|
      return p;
 | 
						|
    }
 | 
						|
 | 
						|
    pointer allocate(size_type n, void const*)
 | 
						|
    {
 | 
						|
      pointer ptr(static_cast<T*>(::operator new(n * sizeof(T))));
 | 
						|
      detail::tracker.track_allocate((void*)ptr, n, sizeof(T), tag_);
 | 
						|
      return ptr;
 | 
						|
    }
 | 
						|
 | 
						|
    void deallocate(pointer p, size_type n)
 | 
						|
    {
 | 
						|
      detail::tracker.track_deallocate((void*)p.ptr_, n, sizeof(T), tag_);
 | 
						|
      ::operator delete((void*)p.ptr_);
 | 
						|
    }
 | 
						|
 | 
						|
#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
 | 
						|
    template <class U, class V> void construct(U* p, V const& v)
 | 
						|
    {
 | 
						|
      detail::tracker.track_construct((void*)p, sizeof(U), tag_);
 | 
						|
      new (p) U(v);
 | 
						|
    }
 | 
						|
#else
 | 
						|
    template <class U, class... Args>
 | 
						|
    void construct(U* p, BOOST_FWD_REF(Args)... args)
 | 
						|
    {
 | 
						|
      detail::tracker.track_construct((void*)p, sizeof(U), tag_);
 | 
						|
      new (p) U(boost::forward<Args>(args)...);
 | 
						|
    }
 | 
						|
#endif
 | 
						|
 | 
						|
    template <class U> void destroy(U* p)
 | 
						|
    {
 | 
						|
      detail::tracker.track_destroy((void*)p, sizeof(U), tag_);
 | 
						|
      p->~U();
 | 
						|
    }
 | 
						|
 | 
						|
    size_type max_size() const
 | 
						|
    {
 | 
						|
      return (std::numeric_limits<size_type>::max)();
 | 
						|
    }
 | 
						|
 | 
						|
    bool operator==(allocator2 const& x) const { return tag_ == x.tag_; }
 | 
						|
 | 
						|
    bool operator!=(allocator2 const& x) const { return tag_ != x.tag_; }
 | 
						|
 | 
						|
    enum
 | 
						|
    {
 | 
						|
      is_select_on_copy = false,
 | 
						|
      is_propagate_on_swap = false,
 | 
						|
      is_propagate_on_assign = false,
 | 
						|
      is_propagate_on_move = false
 | 
						|
    };
 | 
						|
  };
 | 
						|
 | 
						|
  template <class T>
 | 
						|
  bool equivalent_impl(
 | 
						|
    allocator1<T> const& x, allocator1<T> const& y, test::derived_type)
 | 
						|
  {
 | 
						|
    return x == y;
 | 
						|
  }
 | 
						|
 | 
						|
  template <class T>
 | 
						|
  bool equivalent_impl(
 | 
						|
    allocator2<T> const& x, allocator2<T> const& y, test::derived_type)
 | 
						|
  {
 | 
						|
    return x == y;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
namespace boost {
 | 
						|
  template <> struct pointer_traits< ::test::void_ptr>
 | 
						|
  {
 | 
						|
    template <class U> struct rebind_to
 | 
						|
    {
 | 
						|
      typedef ::test::ptr<U> type;
 | 
						|
    };
 | 
						|
  };
 | 
						|
} // namespace boost
 | 
						|
 | 
						|
#endif
 |