/* Multiply indexed container.

 *

 * Copyright 2003-2017 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 http://www.boost.org/libs/multi_index for library home page.

 */

#ifndef BOOST_MULTI_INDEX_HPP

#define BOOST_MULTI_INDEX_HPP

#if defined(_MSC_VER)

#pragma once

#endif

#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */

#include <algorithm>

#include <boost/detail/allocator_utilities.hpp>

#include <boost/detail/no_exceptions_support.hpp>

#include <boost/detail/workaround.hpp>

#include <boost/move/core.hpp>

#include <boost/mpl/at.hpp>

#include <boost/mpl/contains.hpp>

#include <boost/mpl/find_if.hpp>

#include <boost/mpl/identity.hpp>

#include <boost/mpl/int.hpp>

#include <boost/mpl/size.hpp>

#include <boost/mpl/deref.hpp>

#include <boost/multi_index_container_fwd.hpp>

#include <boost/multi_index/detail/access_specifier.hpp>

#include <boost/multi_index/detail/adl_swap.hpp>

#include <boost/multi_index/detail/base_type.hpp>

#include <boost/multi_index/detail/do_not_copy_elements_tag.hpp>

#include <boost/multi_index/detail/converter.hpp>

#include <boost/multi_index/detail/header_holder.hpp>

#include <boost/multi_index/detail/has_tag.hpp>

#include <boost/multi_index/detail/no_duplicate_tags.hpp>

#include <boost/multi_index/detail/safe_mode.hpp>

#include <boost/multi_index/detail/scope_guard.hpp>

#include <boost/multi_index/detail/vartempl_support.hpp>

#include <boost/static_assert.hpp>

#include <boost/type_traits/is_same.hpp>

#include <boost/utility/base_from_member.hpp>

#if !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)

#include <initializer_list>

#endif

#if !defined(BOOST_MULTI_INDEX_DISABLE_SERIALIZATION)

#include <boost/multi_index/detail/archive_constructed.hpp>

#include <boost/multi_index/detail/serialization_version.hpp>

#include <boost/serialization/collection_size_type.hpp>

#include <boost/serialization/nvp.hpp>

#include <boost/serialization/split_member.hpp>

#include <boost/serialization/version.hpp>

#include <boost/throw_exception.hpp> 

#endif

#if defined(BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING)

#include <boost/multi_index/detail/invariant_assert.hpp>

#define BOOST_MULTI_INDEX_CHECK_INVARIANT_OF(x)                              \

  detail::scope_guard BOOST_JOIN(check_invariant_,__LINE__)=                 \

    detail::make_obj_guard(x,&multi_index_container::check_invariant_);      \

  BOOST_JOIN(check_invariant_,__LINE__).touch();

#define BOOST_MULTI_INDEX_CHECK_INVARIANT                                    \

  BOOST_MULTI_INDEX_CHECK_INVARIANT_OF(*this)

#else

#define BOOST_MULTI_INDEX_CHECK_INVARIANT_OF(x)

#define BOOST_MULTI_INDEX_CHECK_INVARIANT

#endif

namespace boost{

namespace multi_index{

#if BOOST_WORKAROUND(BOOST_MSVC,BOOST_TESTED_AT(1500))

#pragma warning(push)

#pragma warning(disable:4522) /* spurious warning on multiple operator=()'s */

#endif

template<typename Value,typename IndexSpecifierList,typename Allocator>

class multi_index_container:

  private ::boost::base_from_member<

    typename boost::detail::allocator::rebind_to<

      Allocator,

      typename detail::multi_index_node_type<

        Value,IndexSpecifierList,Allocator>::type

    >::type>,

  BOOST_MULTI_INDEX_PRIVATE_IF_MEMBER_TEMPLATE_FRIENDS detail::header_holder<

    typename boost::detail::allocator::rebind_to<

      Allocator,

      typename detail::multi_index_node_type<

        Value,IndexSpecifierList,Allocator>::type

    >::type::pointer,

    multi_index_container<Value,IndexSpecifierList,Allocator> >,

  public detail::multi_index_base_type<

    Value,IndexSpecifierList,Allocator>::type

{

#if defined(BOOST_MULTI_INDEX_ENABLE_INVARIANT_CHECKING)&&\

    BOOST_WORKAROUND(__MWERKS__,<=0x3003)

/* The "ISO C++ Template Parser" option in CW8.3 has a problem with the

 * lifetime of const references bound to temporaries --precisely what

 * scopeguards are.

 */

#pragma parse_mfunc_templ off

#endif

private:

  BOOST_COPYABLE_AND_MOVABLE(multi_index_container)

#if !defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS)

  template <typename,typename,typename> friend class  detail::index_base;

  template <typename,typename>          friend struct detail::header_holder;

  template <typename,typename>          friend struct detail::converter;

#endif

  typedef typename detail::multi_index_base_type<

      Value,IndexSpecifierList,Allocator>::type   super;

  typedef typename

  boost::detail::allocator::rebind_to<

    Allocator,

    typename super::node_type

  >::type                                         node_allocator;

  typedef ::boost::base_from_member<

    node_allocator>                               bfm_allocator;

  typedef detail::header_holder<

    typename node_allocator::pointer,

    multi_index_container>                        bfm_header;

public:

  /* All types are inherited from super, a few are explicitly

   * brought forward here to save us some typename's.

   */

  typedef typename super::ctor_args_list           ctor_args_list;

  typedef IndexSpecifierList                       index_specifier_type_list;

  typedef typename super::index_type_list          index_type_list;

  typedef typename super::iterator_type_list       iterator_type_list;

  typedef typename super::const_iterator_type_list const_iterator_type_list;

  typedef typename super::value_type               value_type;

  typedef typename super::final_allocator_type     allocator_type;

  typedef typename super::iterator                 iterator;

  typedef typename super::const_iterator           const_iterator;

  BOOST_STATIC_ASSERT(

    detail::no_duplicate_tags_in_index_list<index_type_list>::value);

  /* global project() needs to see this publicly */

  typedef typename super::node_type node_type;

  /* construct/copy/destroy */

  explicit multi_index_container(

#if BOOST_WORKAROUND(__IBMCPP__,<=600)

    /* VisualAge seems to have an ETI issue with the default values

     * for arguments args_list and al.

     */

    const ctor_args_list& args_list=

      typename mpl::identity<multi_index_container>::type::

        ctor_args_list(),

    const allocator_type& al=

      typename mpl::identity<multi_index_container>::type::

        allocator_type()):

#else

    const ctor_args_list& args_list=ctor_args_list(),

    const allocator_type& al=allocator_type()):

#endif

    bfm_allocator(al),

    super(args_list,bfm_allocator::member),

    node_count(0)

  {

    BOOST_MULTI_INDEX_CHECK_INVARIANT;

  }

  explicit multi_index_container(const allocator_type& al):

    bfm_allocator(al),

    super(ctor_args_list(),bfm_allocator::member),

    node_count(0)

  {

    BOOST_MULTI_INDEX_CHECK_INVARIANT;

  }

  template<typename InputIterator>

  multi_index_container(

    InputIterator first,InputIterator last,

#if BOOST_WORKAROUND(__IBMCPP__,<=600)

    /* VisualAge seems to have an ETI issue with the default values

     * for arguments args_list and al.

     */

    const ctor_args_list& args_list=

      typename mpl::identity<multi_index_container>::type::

        ctor_args_list(),

    const allocator_type& al=

      typename mpl::identity<multi_index_container>::type::

        allocator_type()):

#else

    const ctor_args_list& args_list=ctor_args_list(),

    const allocator_type& al=allocator_type()):

#endif

    bfm_allocator(al),

    super(args_list,bfm_allocator::member),

    node_count(0)

  {

    BOOST_MULTI_INDEX_CHECK_INVARIANT;

    BOOST_TRY{

      iterator hint=super::end();

      for(;first!=last;++first){

        hint=super::make_iterator(

          insert_ref_(*first,hint.get_node()).first);

        ++hint;

      }

    }

    BOOST_CATCH(...){

      clear_();

      BOOST_RETHROW;

    }

    BOOST_CATCH_END

  }

#if !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)

  multi_index_container(

    std::initializer_list<Value> list,

    const ctor_args_list& args_list=ctor_args_list(),

    const allocator_type& al=allocator_type()):

    bfm_allocator(al),

    super(args_list,bfm_allocator::member),

    node_count(0)

  {

    BOOST_MULTI_INDEX_CHECK_INVARIANT;

    BOOST_TRY{

      typedef const Value* init_iterator;

      iterator hint=super::end();

      for(init_iterator first=list.begin(),last=list.end();

          first!=last;++first){

        hint=super::make_iterator(insert_(*first,hint.get_node()).first);

        ++hint;

      }

    }

    BOOST_CATCH(...){

      clear_();

      BOOST_RETHROW;

    }

    BOOST_CATCH_END

  }

#endif

  multi_index_container(

    const multi_index_container<Value,IndexSpecifierList,Allocator>& x):

    bfm_allocator(x.bfm_allocator::member),

    bfm_header(),

    super(x),

    node_count(0)

  {

    copy_map_type map(bfm_allocator::member,x.size(),x.header(),header());

    for(const_iterator it=x.begin(),it_end=x.end();it!=it_end;++it){

      map.clone(it.get_node());

    }

    super::copy_(x,map);

    map.release();

    node_count=x.size();

    /* Not until this point are the indices required to be consistent,

     * hence the position of the invariant checker.

     */

    BOOST_MULTI_INDEX_CHECK_INVARIANT;

  }

  multi_index_container(BOOST_RV_REF(multi_index_container) x):

    bfm_allocator(x.bfm_allocator::member),

    bfm_header(),

    super(x,detail::do_not_copy_elements_tag()),

    node_count(0)

  {

    BOOST_MULTI_INDEX_CHECK_INVARIANT;

    BOOST_MULTI_INDEX_CHECK_INVARIANT_OF(x);

    swap_elements_(x);

  }

  ~multi_index_container()

  {

    delete_all_nodes_();

  }

#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)

  /* As per http://www.boost.org/doc/html/move/emulation_limitations.html

   * #move.emulation_limitations.assignment_operator

   */

  multi_index_container<Value,IndexSpecifierList,Allocator>& operator=(

    const multi_index_container<Value,IndexSpecifierList,Allocator>& x)

  {

    multi_index_container y(x);

    this->swap(y);

    return *this;

  }

#endif

  multi_index_container<Value,IndexSpecifierList,Allocator>& operator=(

    BOOST_COPY_ASSIGN_REF(multi_index_container) x)

  {

    multi_index_container y(x);

    this->swap(y);

    return *this;

  }

  multi_index_container<Value,IndexSpecifierList,Allocator>& operator=(

    BOOST_RV_REF(multi_index_container) x)

  {

    this->swap(x);

    return *this;

  }

#if !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)

  multi_index_container<Value,IndexSpecifierList,Allocator>& operator=(

    std::initializer_list<Value> list)

  {

    BOOST_MULTI_INDEX_CHECK_INVARIANT;

    typedef const Value* init_iterator;

    multi_index_container x(*this,detail::do_not_copy_elements_tag());    

    iterator hint=x.end();

    for(init_iterator first=list.begin(),last=list.end();

        first!=last;++first){

      hint=x.make_iterator(x.insert_(*first,hint.get_node()).first);

      ++hint;

    }

    x.swap_elements_(*this);

    return*this;

  }

#endif

  allocator_type get_allocator()const BOOST_NOEXCEPT

  {

    return allocator_type(bfm_allocator::member);

  }

  /* retrieval of indices by number */

#if !defined(BOOST_NO_MEMBER_TEMPLATES)

  template<int N>

  struct nth_index

  {

    BOOST_STATIC_ASSERT(N>=0&&N<mpl::size<index_type_list>::type::value);

    typedef typename mpl::at_c<index_type_list,N>::type type;

  };

  template<int N>

  typename nth_index<N>::type& get()BOOST_NOEXCEPT

  {

    BOOST_STATIC_ASSERT(N>=0&&N<mpl::size<index_type_list>::type::value);

    return *this;

  }

  template<int N>

  const typename nth_index<N>::type& get()const BOOST_NOEXCEPT

  {

    BOOST_STATIC_ASSERT(N>=0&&N<mpl::size<index_type_list>::type::value);

    return *this;

  }

#endif

  /* retrieval of indices by tag */

#if !defined(BOOST_NO_MEMBER_TEMPLATES)

  template<typename Tag>

  struct index

  {

    typedef typename mpl::find_if<

      index_type_list,

      detail::has_tag<Tag>

    >::type                                    iter;

    BOOST_STATIC_CONSTANT(

      bool,index_found=!(is_same<iter,typename mpl::end<index_type_list>::type >::value));

    BOOST_STATIC_ASSERT(index_found);

    typedef typename mpl::deref<iter>::type    type;

  };

  template<typename Tag>

  typename index<Tag>::type& get()BOOST_NOEXCEPT

  {

    return *this;

  }

  template<typename Tag>

  const typename index<Tag>::type& get()const BOOST_NOEXCEPT

  {

    return *this;

  }

#endif

  /* projection of iterators by number */

#if !defined(BOOST_NO_MEMBER_TEMPLATES)

  template<int N>

  struct nth_index_iterator

  {

    typedef typename nth_index<N>::type::iterator type;

  };

  template<int N>

  struct nth_index_const_iterator

  {

    typedef typename nth_index<N>::type::const_iterator type;

  };

  template<int N,typename IteratorType>

  typename nth_index_iterator<N>::type project(IteratorType it)

  {

    typedef typename nth_index<N>::type index_type;

#if !defined(__SUNPRO_CC)||!(__SUNPRO_CC<0x580) /* fails in Sun C++ 5.7 */

    BOOST_STATIC_ASSERT(

      (mpl::contains<iterator_type_list,IteratorType>::value));

#endif

    BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(it);

    BOOST_MULTI_INDEX_CHECK_IS_OWNER(

      it,static_cast<typename IteratorType::container_type&>(*this));

    return index_type::make_iterator(static_cast<node_type*>(it.get_node()));

  }

  template<int N,typename IteratorType>

  typename nth_index_const_iterator<N>::type project(IteratorType it)const

  {

    typedef typename nth_index<N>::type index_type;

#if !defined(__SUNPRO_CC)||!(__SUNPRO_CC<0x580) /* fails in Sun C++ 5.7 */

    BOOST_STATIC_ASSERT((

      mpl::contains<iterator_type_list,IteratorType>::value||

      mpl::contains<const_iterator_type_list,IteratorType>::value));

#endif

    BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(it);

    BOOST_MULTI_INDEX_CHECK_IS_OWNER(

      it,static_cast<const typename IteratorType::container_type&>(*this));

    return index_type::make_iterator(static_cast<node_type*>(it.get_node()));

  }

#endif

  /* projection of iterators by tag */

#if !defined(BOOST_NO_MEMBER_TEMPLATES)

  template<typename Tag>

  struct index_iterator

  {

    typedef typename index<Tag>::type::iterator type;

  };

  template<typename Tag>

  struct index_const_iterator

  {

    typedef typename index<Tag>::type::const_iterator type;

  };

  template<typename Tag,typename IteratorType>

  typename index_iterator<Tag>::type project(IteratorType it)

  {

    typedef typename index<Tag>::type index_type;

#if !defined(__SUNPRO_CC)||!(__SUNPRO_CC<0x580) /* fails in Sun C++ 5.7 */

    BOOST_STATIC_ASSERT(

      (mpl::contains<iterator_type_list,IteratorType>::value));

#endif

    BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(it);

    BOOST_MULTI_INDEX_CHECK_IS_OWNER(

      it,static_cast<typename IteratorType::container_type&>(*this));

    return index_type::make_iterator(static_cast<node_type*>(it.get_node()));

  }

  template<typename Tag,typename IteratorType>

  typename index_const_iterator<Tag>::type project(IteratorType it)const

  {

    typedef typename index<Tag>::type index_type;

#if !defined(__SUNPRO_CC)||!(__SUNPRO_CC<0x580) /* fails in Sun C++ 5.7 */

    BOOST_STATIC_ASSERT((

      mpl::contains<iterator_type_list,IteratorType>::value||

      mpl::contains<const_iterator_type_list,IteratorType>::value));

#endif

    BOOST_MULTI_INDEX_CHECK_VALID_ITERATOR(it);

    BOOST_MULTI_INDEX_CHECK_IS_OWNER(

      it,static_cast<const typename IteratorType::container_type&>(*this));

    return index_type::make_iterator(static_cast<node_type*>(it.get_node()));

  }

#endif

BOOST_MULTI_INDEX_PROTECTED_IF_MEMBER_TEMPLATE_FRIENDS:

  typedef typename super::copy_map_type copy_map_type;

#if !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)

  multi_index_container(

    const multi_index_container<Value,IndexSpecifierList,Allocator>& x,

    detail::do_not_copy_elements_tag):

    bfm_allocator(x.bfm_allocator::member),

    bfm_header(),

    super(x,detail::do_not_copy_elements_tag()),

    node_count(0)

  {

    BOOST_MULTI_INDEX_CHECK_INVARIANT;

  }

#endif

  node_type* header()const

  {

    return &*bfm_header::member;

  }

  node_type* allocate_node()

  {

    return &*bfm_allocator::member.allocate(1);

  }

  void deallocate_node(node_type* x)

  {

    typedef typename node_allocator::pointer node_pointer;

    bfm_allocator::member.deallocate(static_cast<node_pointer>(x),1);

  }

  bool empty_()const

  {

    return node_count==0;

  }

  std::size_t size_()const

  {

    return node_count;

  }

  std::size_t max_size_()const

  {

    return static_cast<std::size_t >(-1);

  }

  template<typename Variant>

  std::pair<node_type*,bool> insert_(const Value& v,Variant variant)

  {

    node_type* x=0;

    node_type* res=super::insert_(v,x,variant);

    if(res==x){

      ++node_count;

      return std::pair<node_type*,bool>(res,true);

    }

    else{

      return std::pair<node_type*,bool>(res,false);

    }

  }

  std::pair<node_type*,bool> insert_(const Value& v)

  {

    return insert_(v,detail::lvalue_tag());

  }

  std::pair<node_type*,bool> insert_rv_(const Value& v)

  {

    return insert_(v,detail::rvalue_tag());

  }

  template<typename T>

  std::pair<node_type*,bool> insert_ref_(T& t)

  {

    node_type* x=allocate_node();

    BOOST_TRY{

      new(&x->value()) value_type(t);

      BOOST_TRY{

        node_type* res=super::insert_(x->value(),x,detail::emplaced_tag());

        if(res==x){

          ++node_count;

          return std::pair<node_type*,bool>(res,true);

        }

        else{

          boost::detail::allocator::destroy(&x->value());

          deallocate_node(x);

          return std::pair<node_type*,bool>(res,false);

        }

      }

      BOOST_CATCH(...){

        boost::detail::allocator::destroy(&x->value());

        BOOST_RETHROW;

      }

      BOOST_CATCH_END

    }

    BOOST_CATCH(...){

      deallocate_node(x);

      BOOST_RETHROW;

    }

    BOOST_CATCH_END

  }

  std::pair<node_type*,bool> insert_ref_(const value_type& x)

  {

    return insert_(x);

  }

  std::pair<node_type*,bool> insert_ref_(value_type& x)

  {

    return insert_(x);

  }

  template<BOOST_MULTI_INDEX_TEMPLATE_PARAM_PACK>

  std::pair<node_type*,bool> emplace_(

    BOOST_MULTI_INDEX_FUNCTION_PARAM_PACK)

  {

    node_type* x=allocate_node();

    BOOST_TRY{

      detail::vartempl_placement_new(

        &x->value(),BOOST_MULTI_INDEX_FORWARD_PARAM_PACK);

      BOOST_TRY{

        node_type* res=super::insert_(x->value(),x,detail::emplaced_tag());

        if(res==x){

          ++node_count;

          return std::pair<node_type*,bool>(res,true);

        }

        else{

          boost::detail::allocator::destroy(&x->value());

          deallocate_node(x);

          return std::pair<node_type*,bool>(res,false);

        }

      }

      BOOST_CATCH(...){

        boost::detail::allocator::destroy(&x->value());

        BOOST_RETHROW;

      }

      BOOST_CATCH_END

    }

    BOOST_CATCH(...){

      deallocate_node(x);

      BOOST_RETHROW;

    }

    BOOST_CATCH_END

  }

  template<typename Variant>

  std::pair<node_type*,bool> insert_(

    const Value& v,node_type* position,Variant variant)

  {

    node_type* x=0;

    node_type* res=super::insert_(v,position,x,variant);

    if(res==x){

      ++node_count;

      return std::pair<node_type*,bool>(res,true);

    }

    else{

      return std::pair<node_type*,bool>(res,false);

    }

  }

  std::pair<node_type*,bool> insert_(const Value& v,node_type* position)

  {

    return insert_(v,position,detail::lvalue_tag());

  }

  std::pair<node_type*,bool> insert_rv_(const Value& v,node_type* position)

  {

    return insert_(v,position,detail::rvalue_tag());

  }

  template<typename T>

  std::pair<node_type*,bool> insert_ref_(

    T& t,node_type* position)

  {

    node_type* x=allocate_node();

    BOOST_TRY{

      new(&x->value()) value_type(t);

      BOOST_TRY{

        node_type* res=super::insert_(

          x->value(),position,x,detail::emplaced_tag());

        if(res==x){

          ++node_count;

          return std::pair<node_type*,bool>(res,true);

        }

        else{

          boost::detail::allocator::destroy(&x->value());

          deallocate_node(x);

          return std::pair<node_type*,bool>(res,false);

        }

      }

      BOOST_CATCH(...){

        boost::detail::allocator::destroy(&x->value());

        BOOST_RETHROW;

      }

      BOOST_CATCH_END

    }

    BOOST_CATCH(...){

      deallocate_node(x);

      BOOST_RETHROW;

    }

    BOOST_CATCH_END

  }

  std::pair<node_type*,bool> insert_ref_(

    const value_type& x,node_type* position)

  {

    return insert_(x,position);

  }

  std::pair<node_type*,bool> insert_ref_(

    value_type& x,node_type* position)

  {

    return insert_(x,position);

  }

  template<BOOST_MULTI_INDEX_TEMPLATE_PARAM_PACK>

  std::pair<node_type*,bool> emplace_hint_(

    node_type* position,

    BOOST_MULTI_INDEX_FUNCTION_PARAM_PACK)

  {

    node_type* x=allocate_node();

    BOOST_TRY{

      detail::vartempl_placement_new(

        &x->value(),BOOST_MULTI_INDEX_FORWARD_PARAM_PACK);

      BOOST_TRY{

        node_type* res=super::insert_(

          x->value(),position,x,detail::emplaced_tag());

        if(res==x){

          ++node_count;

          return std::pair<node_type*,bool>(res,true);

        }

        else{

          boost::detail::allocator::destroy(&x->value());

          deallocate_node(x);

          return std::pair<node_type*,bool>(res,false);

        }

      }

      BOOST_CATCH(...){

        boost::detail::allocator::destroy(&x->value());

        BOOST_RETHROW;

      }

      BOOST_CATCH_END

    }

    BOOST_CATCH(...){

      deallocate_node(x);

      BOOST_RETHROW;

    }

    BOOST_CATCH_END

  }

  void erase_(node_type* x)

  {

    --node_count;

    super::erase_(x);

    deallocate_node(x);

  }

  void delete_node_(node_type* x)

  {

    super::delete_node_(x);

    deallocate_node(x);

  }

  void delete_all_nodes_()

  {

    super::delete_all_nodes_();

  }

  void clear_()

  {

    delete_all_nodes_();

    super::clear_();

    node_count=0;

  }

  void swap_(multi_index_container<Value,IndexSpecifierList,Allocator>& x)

  {

    if(bfm_allocator::member!=x.bfm_allocator::member){

      detail::adl_swap(bfm_allocator::member,x.bfm_allocator::member);

    }

    std::swap(bfm_header::member,x.bfm_header::member);

    super::swap_(x);

    std::swap(node_count,x.node_count);

  }

  void swap_elements_(

    multi_index_container<Value,IndexSpecifierList,Allocator>& x)

  {

    std::swap(bfm_header::member,x.bfm_header::member);

    super::swap_elements_(x);

    std::swap(node_count,x.node_count);

  }

  bool replace_(const Value& k,node_type* x)

  {

    return super::replace_(k,x,detail::lvalue_tag());

  }

  bool replace_rv_(const Value& k,node_type* x)

  {

    return super::replace_(k,x,detail::rvalue_tag());

  }

  template<typename Modifier>

  bool modify_(Modifier& mod,node_type* x)

  {

    BOOST_TRY{

      mod(const_cast<value_type&>(x->value()));

    }

    BOOST_CATCH(...){

      this->erase_(x);

      BOOST_RETHROW;

    }

    BOOST_CATCH_END

    BOOST_TRY{

      if(!super::modify_(x)){

        deallocate_node(x);

        --node_count;

        return false;

      }

      else return true;

    }

    BOOST_CATCH(...){

      deallocate_node(x);

      --node_count;

      BOOST_RETHROW;

    }

    BOOST_CATCH_END

  }

  template<typename Modifier,typename Rollback>

  bool modify_(Modifier& mod,Rollback& back_,node_type* x)

  {

    BOOST_TRY{

      mod(const_cast<value_type&>(x->value()));

    }

    BOOST_CATCH(...){

      this->erase_(x);

      BOOST_RETHROW;

    }

    BOOST_CATCH_END

    bool b;

    BOOST_TRY{

      b=super::modify_rollback_(x);

    }

    BOOST_CATCH(...){

      BOOST_TRY{

        back_(const_cast<value_type&>(x->value()));

        if(!super::check_rollback_(x))this->erase_(x);

        BOOST_RETHROW;

      }

      BOOST_CATCH(...){

        this->erase_(x);

        BOOST_RETHROW;

      }

      BOOST_CATCH_END

    }

    BOOST_CATCH_END

    BOOST_TRY{

      if(!b){

        back_(const_cast<value_type&>(x->value()));

        if(!super::check_rollback_(x))this->erase_(x);

        return false;

      }

      else return true;

    }

    BOOST_CATCH(...){

      this->erase_(x);

      BOOST_RETHROW;

    }

    BOOST_CATCH_END