3 files changed, 1165 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/detail/allocator_utilities.hpp b/3rdParty/Boost/src/boost/detail/allocator_utilities.hpp
new file mode 100644
index 0000000..5d6ef48
--- /dev/null
+++ b/3rdParty/Boost/src/boost/detail/allocator_utilities.hpp
@@ -0,0 +1,212 @@
+/* Copyright 2003-2009 Joaquin M Lopez Munoz.
+ * Distributed under the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ *
+ * See Boost website at http://www.boost.org/
+ */
+
+#ifndef BOOST_DETAIL_ALLOCATOR_UTILITIES_HPP
+#define BOOST_DETAIL_ALLOCATOR_UTILITIES_HPP
+
+#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
+#include <boost/detail/workaround.hpp>
+#include <boost/mpl/aux_/msvc_never_true.hpp>
+#include <boost/mpl/eval_if.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <cstddef>
+#include <memory>
+#include <new>
+
+namespace boost{
+
+namespace detail{
+
+/* Allocator adaption layer. Some stdlibs provide allocators without rebind
+ * and template ctors. These facilities are simulated with the external
+ * template class rebind_to and the aid of partial_std_allocator_wrapper.
+ */
+
+namespace allocator{
+
+/* partial_std_allocator_wrapper inherits the functionality of a std
+ * allocator while providing a templatized ctor and other bits missing
+ * in some stdlib implementation or another.
+ */
+
+template<typename Type>
+class partial_std_allocator_wrapper:public std::allocator<Type>
+{
+public:
+  /* Oddly enough, STLport does not define std::allocator<void>::value_type
+   * when configured to work without partial template specialization.
+   * No harm in supplying the definition here unconditionally.
+   */
+
+  typedef Type value_type;
+
+  partial_std_allocator_wrapper(){};
+
+  template<typename Other>
+  partial_std_allocator_wrapper(const partial_std_allocator_wrapper<Other>&){}
+
+  partial_std_allocator_wrapper(const std::allocator<Type>& x):
+    std::allocator<Type>(x)
+  {
+  };
+
+#if defined(BOOST_DINKUMWARE_STDLIB)
+  /* Dinkumware guys didn't provide a means to call allocate() without
+   * supplying a hint, in disagreement with the standard.
+   */
+
+  Type* allocate(std::size_t n,const void* hint=0)
+  {
+    std::allocator<Type>& a=*this;
+    return a.allocate(n,hint);
+  }
+#endif
+
+};
+
+/* Detects whether a given allocator belongs to a defective stdlib not
+ * having the required member templates.
+ * Note that it does not suffice to check the Boost.Config stdlib
+ * macros, as the user might have passed a custom, compliant allocator.
+ * The checks also considers partial_std_allocator_wrapper to be
+ * a standard defective allocator.
+ */
+
+#if defined(BOOST_NO_STD_ALLOCATOR)&&\
+  (defined(BOOST_HAS_PARTIAL_STD_ALLOCATOR)||defined(BOOST_DINKUMWARE_STDLIB))
+
+template<typename Allocator>
+struct is_partial_std_allocator
+{
+  BOOST_STATIC_CONSTANT(bool,
+    value=
+      (is_same<
+        std::allocator<BOOST_DEDUCED_TYPENAME Allocator::value_type>,
+        Allocator
+      >::value)||
+      (is_same<
+        partial_std_allocator_wrapper<
+          BOOST_DEDUCED_TYPENAME Allocator::value_type>,
+        Allocator
+      >::value));
+};
+
+#else
+
+template<typename Allocator>
+struct is_partial_std_allocator
+{
+  BOOST_STATIC_CONSTANT(bool,value=false);
+};
+
+#endif
+
+/* rebind operations for defective std allocators */
+
+template<typename Allocator,typename Type>
+struct partial_std_allocator_rebind_to
+{
+  typedef partial_std_allocator_wrapper<Type> type;
+};
+
+/* rebind operation in all other cases */
+
+#if BOOST_WORKAROUND(BOOST_MSVC,<1300)
+/* Workaround for a problem in MSVC with dependent template typedefs
+ * when doing rebinding of allocators.
+ * Modeled after <boost/mpl/aux_/msvc_dtw.hpp> (thanks, Aleksey!)
+ */
+
+template<typename Allocator>
+struct rebinder
+{
+  template<bool> struct fake_allocator:Allocator{};
+  template<> struct fake_allocator<true>
+  {
+    template<typename Type> struct rebind{};
+  };
+
+  template<typename Type>
+  struct result:
+    fake_allocator<mpl::aux::msvc_never_true<Allocator>::value>::
+      template rebind<Type>
+  {
+  };
+};
+#else
+template<typename Allocator>
+struct rebinder
+{
+  template<typename Type>
+  struct result
+  {
+      typedef typename Allocator::BOOST_NESTED_TEMPLATE 
+          rebind<Type>::other other;
+  };
+};
+#endif
+
+template<typename Allocator,typename Type>
+struct compliant_allocator_rebind_to
+{
+  typedef typename rebinder<Allocator>::
+      BOOST_NESTED_TEMPLATE result<Type>::other type;
+};
+
+/* rebind front-end */
+
+template<typename Allocator,typename Type>
+struct rebind_to:
+  mpl::eval_if_c<
+    is_partial_std_allocator<Allocator>::value,
+    partial_std_allocator_rebind_to<Allocator,Type>,
+    compliant_allocator_rebind_to<Allocator,Type>
+  >
+{
+};
+
+/* allocator-independent versions of construct and destroy */
+
+template<typename Type>
+void construct(void* p,const Type& t)
+{
+  new (p) Type(t);
+}
+
+#if BOOST_WORKAROUND(BOOST_MSVC,BOOST_TESTED_AT(1500))
+/* MSVC++ issues spurious warnings about unreferencend formal parameters
+ * in destroy<Type> when Type is a class with trivial dtor.
+ */
+
+#pragma warning(push)
+#pragma warning(disable:4100)  
+#endif
+
+template<typename Type>
+void destroy(const Type* p)
+{
+
+#if BOOST_WORKAROUND(__SUNPRO_CC,BOOST_TESTED_AT(0x590))
+  const_cast<Type*>(p)->~Type();
+#else
+  p->~Type();
+#endif
+
+}
+
+#if BOOST_WORKAROUND(BOOST_MSVC,BOOST_TESTED_AT(1500))
+#pragma warning(pop)
+#endif
+
+} /* namespace boost::detail::allocator */
+
+} /* namespace boost::detail */
+
+} /* namespace boost */
+
+#endif
diff --git a/3rdParty/Boost/src/boost/detail/compressed_pair.hpp b/3rdParty/Boost/src/boost/detail/compressed_pair.hpp
new file mode 100644
index 0000000..3f32645
--- /dev/null
+++ b/3rdParty/Boost/src/boost/detail/compressed_pair.hpp
@@ -0,0 +1,443 @@
+//  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
+//
+//  See http://www.boost.org/libs/utility for most recent version including documentation.
+
+// compressed_pair: pair that "compresses" empty members
+// (see libs/utility/compressed_pair.htm)
+//
+// JM changes 25 Jan 2004:
+// For the case where T1 == T2 and both are empty, then first() and second()
+// should return different objects.
+// JM changes 25 Jan 2000:
+// Removed default arguments from compressed_pair_switch to get
+// C++ Builder 4 to accept them
+// rewriten swap to get gcc and C++ builder to compile.
+// added partial specialisations for case T1 == T2 to avoid duplicate constructor defs.
+
+#ifndef BOOST_DETAIL_COMPRESSED_PAIR_HPP
+#define BOOST_DETAIL_COMPRESSED_PAIR_HPP
+
+#include <algorithm>
+
+#include <boost/type_traits/remove_cv.hpp>
+#include <boost/type_traits/is_empty.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/call_traits.hpp>
+
+#ifdef BOOST_MSVC
+# pragma warning(push)
+# pragma warning(disable:4512)
+#endif 
+namespace boost
+{
+
+template <class T1, class T2>
+class compressed_pair;
+
+
+// compressed_pair
+
+namespace details
+{
+   // JM altered 26 Jan 2000:
+   template <class T1, class T2, bool IsSame, bool FirstEmpty, bool SecondEmpty>
+   struct compressed_pair_switch;
+
+   template <class T1, class T2>
+   struct compressed_pair_switch<T1, T2, false, false, false>
+      {static const int value = 0;};
+
+   template <class T1, class T2>
+   struct compressed_pair_switch<T1, T2, false, true, true>
+      {static const int value = 3;};
+
+   template <class T1, class T2>
+   struct compressed_pair_switch<T1, T2, false, true, false>
+      {static const int value = 1;};
+
+   template <class T1, class T2>
+   struct compressed_pair_switch<T1, T2, false, false, true>
+      {static const int value = 2;};
+
+   template <class T1, class T2>
+   struct compressed_pair_switch<T1, T2, true, true, true>
+      {static const int value = 4;};
+
+   template <class T1, class T2>
+   struct compressed_pair_switch<T1, T2, true, false, false>
+      {static const int value = 5;};
+
+   template <class T1, class T2, int Version> class compressed_pair_imp;
+
+#ifdef __GNUC__
+   // workaround for GCC (JM):
+   using std::swap;
+#endif
+   //
+   // can't call unqualified swap from within classname::swap
+   // as Koenig lookup rules will find only the classname::swap
+   // member function not the global declaration, so use cp_swap
+   // as a forwarding function (JM):
+   template <typename T>
+   inline void cp_swap(T& t1, T& t2)
+   {
+#ifndef __GNUC__
+      using std::swap;
+#endif
+      swap(t1, t2);
+   }
+
+   // 0    derive from neither
+
+   template <class T1, class T2>
+   class compressed_pair_imp<T1, T2, 0>
+   {
+   public:
+      typedef T1                                                 first_type;
+      typedef T2                                                 second_type;
+      typedef typename call_traits<first_type>::param_type       first_param_type;
+      typedef typename call_traits<second_type>::param_type      second_param_type;
+      typedef typename call_traits<first_type>::reference        first_reference;
+      typedef typename call_traits<second_type>::reference       second_reference;
+      typedef typename call_traits<first_type>::const_reference  first_const_reference;
+      typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+      compressed_pair_imp() {} 
+
+      compressed_pair_imp(first_param_type x, second_param_type y)
+         : first_(x), second_(y) {}
+
+      compressed_pair_imp(first_param_type x)
+         : first_(x) {}
+
+      compressed_pair_imp(second_param_type y)
+         : second_(y) {}
+
+      first_reference       first()       {return first_;}
+      first_const_reference first() const {return first_;}
+
+      second_reference       second()       {return second_;}
+      second_const_reference second() const {return second_;}
+
+      void swap(::boost::compressed_pair<T1, T2>& y)
+      {
+         cp_swap(first_, y.first());
+         cp_swap(second_, y.second());
+      }
+   private:
+      first_type first_;
+      second_type second_;
+   };
+
+   // 1    derive from T1
+
+   template <class T1, class T2>
+   class compressed_pair_imp<T1, T2, 1>
+      : protected ::boost::remove_cv<T1>::type
+   {
+   public:
+      typedef T1                                                 first_type;
+      typedef T2                                                 second_type;
+      typedef typename call_traits<first_type>::param_type       first_param_type;
+      typedef typename call_traits<second_type>::param_type      second_param_type;
+      typedef typename call_traits<first_type>::reference        first_reference;
+      typedef typename call_traits<second_type>::reference       second_reference;
+      typedef typename call_traits<first_type>::const_reference  first_const_reference;
+      typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+      compressed_pair_imp() {}
+
+      compressed_pair_imp(first_param_type x, second_param_type y)
+         : first_type(x), second_(y) {}
+
+      compressed_pair_imp(first_param_type x)
+         : first_type(x) {}
+
+      compressed_pair_imp(second_param_type y)
+         : second_(y) {}
+
+      first_reference       first()       {return *this;}
+      first_const_reference first() const {return *this;}
+
+      second_reference       second()       {return second_;}
+      second_const_reference second() const {return second_;}
+
+      void swap(::boost::compressed_pair<T1,T2>& y)
+      {
+         // no need to swap empty base class:
+         cp_swap(second_, y.second());
+      }
+   private:
+      second_type second_;
+   };
+
+   // 2    derive from T2
+
+   template <class T1, class T2>
+   class compressed_pair_imp<T1, T2, 2>
+      : protected ::boost::remove_cv<T2>::type
+   {
+   public:
+      typedef T1                                                 first_type;
+      typedef T2                                                 second_type;
+      typedef typename call_traits<first_type>::param_type       first_param_type;
+      typedef typename call_traits<second_type>::param_type      second_param_type;
+      typedef typename call_traits<first_type>::reference        first_reference;
+      typedef typename call_traits<second_type>::reference       second_reference;
+      typedef typename call_traits<first_type>::const_reference  first_const_reference;
+      typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+      compressed_pair_imp() {}
+
+      compressed_pair_imp(first_param_type x, second_param_type y)
+         : second_type(y), first_(x) {}
+
+      compressed_pair_imp(first_param_type x)
+         : first_(x) {}
+
+      compressed_pair_imp(second_param_type y)
+         : second_type(y) {}
+
+      first_reference       first()       {return first_;}
+      first_const_reference first() const {return first_;}
+
+      second_reference       second()       {return *this;}
+      second_const_reference second() const {return *this;}
+
+      void swap(::boost::compressed_pair<T1,T2>& y)
+      {
+         // no need to swap empty base class:
+         cp_swap(first_, y.first());
+      }
+
+   private:
+      first_type first_;
+   };
+
+   // 3    derive from T1 and T2
+
+   template <class T1, class T2>
+   class compressed_pair_imp<T1, T2, 3>
+      : protected ::boost::remove_cv<T1>::type,
+        protected ::boost::remove_cv<T2>::type
+   {
+   public:
+      typedef T1                                                 first_type;
+      typedef T2                                                 second_type;
+      typedef typename call_traits<first_type>::param_type       first_param_type;
+      typedef typename call_traits<second_type>::param_type      second_param_type;
+      typedef typename call_traits<first_type>::reference        first_reference;
+      typedef typename call_traits<second_type>::reference       second_reference;
+      typedef typename call_traits<first_type>::const_reference  first_const_reference;
+      typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+      compressed_pair_imp() {}
+
+      compressed_pair_imp(first_param_type x, second_param_type y)
+         : first_type(x), second_type(y) {}
+
+      compressed_pair_imp(first_param_type x)
+         : first_type(x) {}
+
+      compressed_pair_imp(second_param_type y)
+         : second_type(y) {}
+
+      first_reference       first()       {return *this;}
+      first_const_reference first() const {return *this;}
+
+      second_reference       second()       {return *this;}
+      second_const_reference second() const {return *this;}
+      //
+      // no need to swap empty bases:
+      void swap(::boost::compressed_pair<T1,T2>&) {}
+   };
+
+   // JM
+   // 4    T1 == T2, T1 and T2 both empty
+   //      Originally this did not store an instance of T2 at all
+   //      but that led to problems beause it meant &x.first() == &x.second()
+   //      which is not true for any other kind of pair, so now we store an instance
+   //      of T2 just in case the user is relying on first() and second() returning
+   //      different objects (albeit both empty).
+   template <class T1, class T2>
+   class compressed_pair_imp<T1, T2, 4>
+      : protected ::boost::remove_cv<T1>::type
+   {
+   public:
+      typedef T1                                                 first_type;
+      typedef T2                                                 second_type;
+      typedef typename call_traits<first_type>::param_type       first_param_type;
+      typedef typename call_traits<second_type>::param_type      second_param_type;
+      typedef typename call_traits<first_type>::reference        first_reference;
+      typedef typename call_traits<second_type>::reference       second_reference;
+      typedef typename call_traits<first_type>::const_reference  first_const_reference;
+      typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+      compressed_pair_imp() {}
+
+      compressed_pair_imp(first_param_type x, second_param_type y)
+         : first_type(x), m_second(y) {}
+
+      compressed_pair_imp(first_param_type x)
+         : first_type(x), m_second(x) {}
+
+      first_reference       first()       {return *this;}
+      first_const_reference first() const {return *this;}
+
+      second_reference       second()       {return m_second;}
+      second_const_reference second() const {return m_second;}
+
+      void swap(::boost::compressed_pair<T1,T2>&) {}
+   private:
+      T2 m_second;
+   };
+
+   // 5    T1 == T2 and are not empty:   //JM
+
+   template <class T1, class T2>
+   class compressed_pair_imp<T1, T2, 5>
+   {
+   public:
+      typedef T1                                                 first_type;
+      typedef T2                                                 second_type;
+      typedef typename call_traits<first_type>::param_type       first_param_type;
+      typedef typename call_traits<second_type>::param_type      second_param_type;
+      typedef typename call_traits<first_type>::reference        first_reference;
+      typedef typename call_traits<second_type>::reference       second_reference;
+      typedef typename call_traits<first_type>::const_reference  first_const_reference;
+      typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+      compressed_pair_imp() {}
+
+      compressed_pair_imp(first_param_type x, second_param_type y)
+         : first_(x), second_(y) {}
+
+      compressed_pair_imp(first_param_type x)
+         : first_(x), second_(x) {}
+
+      first_reference       first()       {return first_;}
+      first_const_reference first() const {return first_;}
+
+      second_reference       second()       {return second_;}
+      second_const_reference second() const {return second_;}
+
+      void swap(::boost::compressed_pair<T1, T2>& y)
+      {
+         cp_swap(first_, y.first());
+         cp_swap(second_, y.second());
+      }
+   private:
+      first_type first_;
+      second_type second_;
+   };
+
+}  // details
+
+template <class T1, class T2>
+class compressed_pair
+   : private ::boost::details::compressed_pair_imp<T1, T2,
+             ::boost::details::compressed_pair_switch<
+                    T1,
+                    T2,
+                    ::boost::is_same<typename remove_cv<T1>::type, typename remove_cv<T2>::type>::value,
+                    ::boost::is_empty<T1>::value,
+                    ::boost::is_empty<T2>::value>::value>
+{
+private:
+   typedef details::compressed_pair_imp<T1, T2,
+             ::boost::details::compressed_pair_switch<
+                    T1,
+                    T2,
+                    ::boost::is_same<typename remove_cv<T1>::type, typename remove_cv<T2>::type>::value,
+                    ::boost::is_empty<T1>::value,
+                    ::boost::is_empty<T2>::value>::value> base;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair() : base() {}
+            compressed_pair(first_param_type x, second_param_type y) : base(x, y) {}
+   explicit compressed_pair(first_param_type x) : base(x) {}
+   explicit compressed_pair(second_param_type y) : base(y) {}
+
+   first_reference       first()       {return base::first();}
+   first_const_reference first() const {return base::first();}
+
+   second_reference       second()       {return base::second();}
+   second_const_reference second() const {return base::second();}
+
+   void swap(compressed_pair& y) { base::swap(y); }
+};
+
+// JM
+// Partial specialisation for case where T1 == T2:
+//
+template <class T>
+class compressed_pair<T, T>
+   : private details::compressed_pair_imp<T, T,
+             ::boost::details::compressed_pair_switch<
+                    T,
+                    T,
+                    ::boost::is_same<typename remove_cv<T>::type, typename remove_cv<T>::type>::value,
+                    ::boost::is_empty<T>::value,
+                    ::boost::is_empty<T>::value>::value>
+{
+private:
+   typedef details::compressed_pair_imp<T, T,
+             ::boost::details::compressed_pair_switch<
+                    T,
+                    T,
+                    ::boost::is_same<typename remove_cv<T>::type, typename remove_cv<T>::type>::value,
+                    ::boost::is_empty<T>::value,
+                    ::boost::is_empty<T>::value>::value> base;
+public:
+   typedef T                                                  first_type;
+   typedef T                                                  second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair() : base() {}
+            compressed_pair(first_param_type x, second_param_type y) : base(x, y) {}
+#if !(defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x530))
+   explicit 
+#endif
+      compressed_pair(first_param_type x) : base(x) {}
+
+   first_reference       first()       {return base::first();}
+   first_const_reference first() const {return base::first();}
+
+   second_reference       second()       {return base::second();}
+   second_const_reference second() const {return base::second();}
+
+   void swap(::boost::compressed_pair<T,T>& y) { base::swap(y); }
+};
+
+template <class T1, class T2>
+inline
+void
+swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y)
+{
+   x.swap(y);
+}
+
+} // boost
+
+#ifdef BOOST_MSVC
+# pragma warning(pop)
+#endif 
+
+#endif // BOOST_DETAIL_COMPRESSED_PAIR_HPP
+
diff --git a/3rdParty/Boost/src/boost/detail/ob_compressed_pair.hpp b/3rdParty/Boost/src/boost/detail/ob_compressed_pair.hpp
new file mode 100644
index 0000000..727acab
--- /dev/null
+++ b/3rdParty/Boost/src/boost/detail/ob_compressed_pair.hpp
@@ -0,0 +1,510 @@
+//  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
+//
+//  See http://www.boost.org/libs/utility for most recent version including documentation.
+//  see libs/utility/compressed_pair.hpp
+//
+/* Release notes:
+   20 Jan 2001:
+        Fixed obvious bugs (David Abrahams)
+   07 Oct 2000:
+      Added better single argument constructor support.
+   03 Oct 2000:
+      Added VC6 support (JM).
+   23rd July 2000:
+      Additional comments added. (JM)
+   Jan 2000:
+      Original version: this version crippled for use with crippled compilers
+      - John Maddock Jan 2000.
+*/
+
+
+#ifndef BOOST_OB_COMPRESSED_PAIR_HPP
+#define BOOST_OB_COMPRESSED_PAIR_HPP
+
+#include <algorithm>
+#ifndef BOOST_OBJECT_TYPE_TRAITS_HPP
+#include <boost/type_traits/object_traits.hpp>
+#endif
+#ifndef BOOST_SAME_TRAITS_HPP
+#include <boost/type_traits/same_traits.hpp>
+#endif
+#ifndef BOOST_CALL_TRAITS_HPP
+#include <boost/call_traits.hpp>
+#endif
+
+namespace boost
+{
+#ifdef BOOST_MSVC6_MEMBER_TEMPLATES
+//
+// use member templates to emulate
+// partial specialisation.  Note that due to
+// problems with overload resolution with VC6
+// each of the compressed_pair versions that follow
+// have one template single-argument constructor
+// in place of two specific constructors:
+//
+
+template <class T1, class T2>
+class compressed_pair;
+
+namespace detail{
+
+template <class A, class T1, class T2>
+struct best_conversion_traits
+{
+   typedef char one;
+   typedef char (&two)[2];
+   static A a;
+   static one test(T1);
+   static two test(T2);
+
+   enum { value = sizeof(test(a)) };
+};
+
+template <int>
+struct init_one;
+
+template <>
+struct init_one<1>
+{
+   template <class A, class T1, class T2>
+   static void init(const A& a, T1* p1, T2*)
+   {
+      *p1 = a;
+   }
+};
+
+template <>
+struct init_one<2>
+{
+   template <class A, class T1, class T2>
+   static void init(const A& a, T1*, T2* p2)
+   {
+      *p2 = a;
+   }
+};
+
+
+// T1 != T2, both non-empty
+template <class T1, class T2>
+class compressed_pair_0
+{
+private:
+   T1 _first;
+   T2 _second;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_0() : _first(), _second() {}
+            compressed_pair_0(first_param_type x, second_param_type y) : _first(x), _second(y) {}
+   template <class A>
+   explicit compressed_pair_0(const A& val)
+   {
+      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, &_first, &_second);
+   }
+   compressed_pair_0(const ::boost::compressed_pair<T1,T2>& x)
+      : _first(x.first()), _second(x.second()) {}
+
+#if 0
+  compressed_pair_0& operator=(const compressed_pair_0& x) {
+    cout << "assigning compressed pair 0" << endl;
+    _first = x._first;
+    _second = x._second;
+    cout << "finished assigning compressed pair 0" << endl;
+    return *this;
+  }
+#endif
+
+   first_reference       first()       { return _first; }
+   first_const_reference first() const { return _first; }
+
+   second_reference       second()       { return _second; }
+   second_const_reference second() const { return _second; }
+
+   void swap(compressed_pair_0& y)
+   {
+      using std::swap;
+      swap(_first, y._first);
+      swap(_second, y._second);
+   }
+};
+
+// T1 != T2, T2 empty
+template <class T1, class T2>
+class compressed_pair_1 : T2
+{
+private:
+   T1 _first;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_1() : T2(), _first() {}
+            compressed_pair_1(first_param_type x, second_param_type y) : T2(y), _first(x) {}
+
+   template <class A>
+   explicit compressed_pair_1(const A& val)
+   {
+      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, &_first, static_cast<T2*>(this));
+   }
+
+   compressed_pair_1(const ::boost::compressed_pair<T1,T2>& x)
+      : T2(x.second()), _first(x.first()) {}
+
+#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
+  // Total weirdness. If the assignment to _first is moved after
+  // the call to the inherited operator=, then this breaks graph/test/graph.cpp
+  // by way of iterator_adaptor.
+  compressed_pair_1& operator=(const compressed_pair_1& x) {
+    _first = x._first;
+    T2::operator=(x);
+    return *this;
+  }
+#endif
+
+   first_reference       first()       { return _first; }
+   first_const_reference first() const { return _first; }
+
+   second_reference       second()       { return *this; }
+   second_const_reference second() const { return *this; }
+
+   void swap(compressed_pair_1& y)
+   {
+      // no need to swap empty base class:
+      using std::swap;
+      swap(_first, y._first);
+   }
+};
+
+// T1 != T2, T1 empty
+template <class T1, class T2>
+class compressed_pair_2 : T1
+{
+private:
+   T2 _second;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_2() : T1(), _second() {}
+            compressed_pair_2(first_param_type x, second_param_type y) : T1(x), _second(y) {}
+   template <class A>
+   explicit compressed_pair_2(const A& val)
+   {
+      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, static_cast<T1*>(this), &_second);
+   }
+   compressed_pair_2(const ::boost::compressed_pair<T1,T2>& x)
+      : T1(x.first()), _second(x.second()) {}
+
+#if 0
+  compressed_pair_2& operator=(const compressed_pair_2& x) {
+    cout << "assigning compressed pair 2" << endl;
+    T1::operator=(x);
+    _second = x._second;
+    cout << "finished assigning compressed pair 2" << endl;
+    return *this;
+  }
+#endif
+   first_reference       first()       { return *this; }
+   first_const_reference first() const { return *this; }
+
+   second_reference       second()       { return _second; }
+   second_const_reference second() const { return _second; }
+
+   void swap(compressed_pair_2& y)
+   {
+      // no need to swap empty base class:
+      using std::swap;
+      swap(_second, y._second);
+   }
+};
+
+// T1 != T2, both empty
+template <class T1, class T2>
+class compressed_pair_3 : T1, T2
+{
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_3() : T1(), T2() {}
+            compressed_pair_3(first_param_type x, second_param_type y) : T1(x), T2(y) {}
+   template <class A>
+   explicit compressed_pair_3(const A& val)
+   {
+      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, static_cast<T1*>(this), static_cast<T2*>(this));
+   }
+   compressed_pair_3(const ::boost::compressed_pair<T1,T2>& x)
+      : T1(x.first()), T2(x.second()) {}
+
+   first_reference       first()       { return *this; }
+   first_const_reference first() const { return *this; }
+
+   second_reference       second()       { return *this; }
+   second_const_reference second() const { return *this; }
+
+   void swap(compressed_pair_3& y)
+   {
+      // no need to swap empty base classes:
+   }
+};
+
+// T1 == T2, and empty
+template <class T1, class T2>
+class compressed_pair_4 : T1
+{
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_4() : T1() {}
+            compressed_pair_4(first_param_type x, second_param_type y) : T1(x), m_second(y) {}
+   // only one single argument constructor since T1 == T2
+   explicit compressed_pair_4(first_param_type x) : T1(x), m_second(x) {}
+   compressed_pair_4(const ::boost::compressed_pair<T1,T2>& x)
+      : T1(x.first()), m_second(x.second()) {}
+
+   first_reference       first()       { return *this; }
+   first_const_reference first() const { return *this; }
+
+   second_reference       second()       { return m_second; }
+   second_const_reference second() const { return m_second; }
+
+   void swap(compressed_pair_4& y)
+   {
+      // no need to swap empty base classes:
+   }
+private:
+   T2 m_second;
+};
+
+// T1 == T2, not empty
+template <class T1, class T2>
+class compressed_pair_5
+{
+private:
+   T1 _first;
+   T2 _second;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_5() : _first(), _second() {}
+            compressed_pair_5(first_param_type x, second_param_type y) : _first(x), _second(y) {}
+   // only one single argument constructor since T1 == T2
+   explicit compressed_pair_5(first_param_type x) : _first(x), _second(x) {}
+   compressed_pair_5(const ::boost::compressed_pair<T1,T2>& c) 
+      : _first(c.first()), _second(c.second()) {}
+
+   first_reference       first()       { return _first; }
+   first_const_reference first() const { return _first; }
+
+   second_reference       second()       { return _second; }
+   second_const_reference second() const { return _second; }
+
+   void swap(compressed_pair_5& y)
+   {
+      using std::swap;
+      swap(_first, y._first);
+      swap(_second, y._second);
+   }
+};
+
+template <bool e1, bool e2, bool same>
+struct compressed_pair_chooser
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_0<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<false, true, false>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_1<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<true, false, false>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_2<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<true, true, false>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_3<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<true, true, true>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_4<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<false, false, true>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_5<T1, T2> type;
+   };
+};
+
+template <class T1, class T2>
+struct compressed_pair_traits
+{
+private:
+   typedef compressed_pair_chooser<is_empty<T1>::value, is_empty<T2>::value, is_same<T1,T2>::value> chooser;
+   typedef typename chooser::template rebind<T1, T2> bound_type;
+public:
+   typedef typename bound_type::type type;
+};
+
+} // namespace detail
+
+template <class T1, class T2>
+class compressed_pair : public detail::compressed_pair_traits<T1, T2>::type
+{
+private:
+   typedef typename detail::compressed_pair_traits<T1, T2>::type base_type;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair() : base_type() {}
+            compressed_pair(first_param_type x, second_param_type y) : base_type(x, y) {}
+   template <class A>
+   explicit compressed_pair(const A& x) : base_type(x){}
+
+   first_reference       first()       { return base_type::first(); }
+   first_const_reference first() const { return base_type::first(); }
+
+   second_reference       second()       { return base_type::second(); }
+   second_const_reference second() const { return base_type::second(); }
+};
+
+template <class T1, class T2>
+inline void swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y)
+{
+   x.swap(y);
+}
+
+#else
+// no partial specialisation, no member templates:
+
+template <class T1, class T2>
+class compressed_pair
+{
+private:
+   T1 _first;
+   T2 _second;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair() : _first(), _second() {}
+            compressed_pair(first_param_type x, second_param_type y) : _first(x), _second(y) {}
+   explicit compressed_pair(first_param_type x) : _first(x), _second() {}
+   // can't define this in case T1 == T2:
+   // explicit compressed_pair(second_param_type y) : _first(), _second(y) {}
+
+   first_reference       first()       { return _first; }
+   first_const_reference first() const { return _first; }
+
+   second_reference       second()       { return _second; }
+   second_const_reference second() const { return _second; }
+
+   void swap(compressed_pair& y)
+   {
+      using std::swap;
+      swap(_first, y._first);
+      swap(_second, y._second);
+   }
+};
+
+template <class T1, class T2>
+inline void swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y)
+{
+   x.swap(y);
+}
+
+#endif
+
+} // boost
+
+#endif // BOOST_OB_COMPRESSED_PAIR_HPP
+
+
+