//

// Boost.Pointer Container

//

//  Copyright Thorsten Ottosen 2003-2005. Use, modification and

//  distribution is 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)

//

// For more information, see http://www.boost.org/libs/ptr_container/

//

#ifndef BOOST_PTR_CONTAINER_DETAIL_ASSOCIATIVE_PTR_CONTAINER_HPP

#define BOOST_PTR_CONTAINER_DETAIL_ASSOCIATIVE_PTR_CONTAINER_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)

# pragma once

#endif

#include <boost/ptr_container/detail/reversible_ptr_container.hpp>

namespace boost

{

namespace ptr_container_detail

{

    template

    <

        class Config,

        class CloneAllocator

    >

    class associative_ptr_container :

        public reversible_ptr_container<Config,CloneAllocator>

    {

        typedef reversible_ptr_container<Config,CloneAllocator>

                                base_type;

        typedef BOOST_DEDUCED_TYPENAME base_type::scoped_deleter

                                scoped_deleter;

    public: // typedefs

        typedef BOOST_DEDUCED_TYPENAME Config::key_type

                                key_type;

        typedef BOOST_DEDUCED_TYPENAME Config::key_compare

                                key_compare;

        typedef BOOST_DEDUCED_TYPENAME Config::value_compare

                                value_compare;

        typedef BOOST_DEDUCED_TYPENAME Config::iterator

                                iterator;

        typedef BOOST_DEDUCED_TYPENAME Config::const_iterator

                                const_iterator;

        typedef BOOST_DEDUCED_TYPENAME base_type::size_type

                                size_type;

    public: // foundation

       template< class Compare, class Allocator >

       associative_ptr_container( const Compare& comp,

                                    const Allocator& a )

         : base_type( comp, a )

       { }

       template< class InputIterator, class Compare, class Allocator >

       associative_ptr_container( InputIterator first, InputIterator last,

                                    const Compare& comp,

                                    const Allocator& a )

         : base_type( first, last, comp, a )

       { }

       template< class PtrContainer >

       associative_ptr_container( std::auto_ptr<PtrContainer> r )

         : base_type( r, key_compare() )

       { }

       template< class PtrContainer >

       void operator=( std::auto_ptr<PtrContainer> r )

       {

           base_type::operator=( r );

       }

    public: // associative container interface

        key_compare key_comp() const

        {

            return this->c_private().key_comp();

        }

        value_compare value_comp() const

        {

            return this->c_private().value_comp();

        }

        iterator erase( iterator before ) // nothrow

        {

            BOOST_ASSERT( !this->empty() );

            BOOST_ASSERT( before != this->end() );

            this->remove( before );                      // nothrow

            iterator res( before );                      // nothrow

            ++res;                                       // nothrow

            this->c_private().erase( before.base() );    // nothrow

            return res;                                  // nothrow

        }

        size_type erase( const key_type& x ) // nothrow

        {

            iterator i( this->c_private().find( x ) );  // nothrow

            if( i == this->end() )                      // nothrow

                return 0u;                              // nothrow

            this->remove( i );                          // nothrow

            return this->c_private().erase( x );        // nothrow

        }

        iterator erase( iterator first,

                        iterator last ) // nothrow

        {

            iterator res( last );                                // nothrow

            if( res != this->end() )

                ++res;                                           // nothrow

            this->remove( first, last );                         // nothrow

            this->c_private().erase( first.base(), last.base() );// nothrow

            return res;                                          // nothrow

        }

    protected:

        template< class AssociatePtrCont >

        void multi_transfer( BOOST_DEDUCED_TYPENAME AssociatePtrCont::iterator object,

                             AssociatePtrCont& from ) // strong

        {

            BOOST_ASSERT( (void*)&from != (void*)this );

            BOOST_ASSERT( !from.empty() && "Cannot transfer from empty container" );

            this->c_private().insert( *object.base() );     // strong

            from.c_private().erase( object.base() );        // nothrow

        }

        template< class AssociatePtrCont >

        size_type multi_transfer( BOOST_DEDUCED_TYPENAME AssociatePtrCont::iterator first,

                                  BOOST_DEDUCED_TYPENAME AssociatePtrCont::iterator last,

                                  AssociatePtrCont& from ) // basic

        {

            BOOST_ASSERT( (void*)&from != (void*)this );

            BOOST_ASSERT( !from.empty() && "Cannot transfer from empty container" );

            size_type res = 0;

            for( ; first != last; )

            {

                BOOST_ASSERT( first != from.end() );

                this->c_private().insert( *first.base() );     // strong

                BOOST_DEDUCED_TYPENAME AssociatePtrCont::iterator 

                    to_delete( first );

                ++first;

                from.c_private().erase( to_delete.base() );    // nothrow

                ++res;

            }

            return res;

        }

        template< class AssociatePtrCont >

        bool single_transfer( BOOST_DEDUCED_TYPENAME AssociatePtrCont::iterator object,

                              AssociatePtrCont& from ) // strong

        {

            BOOST_ASSERT( (void*)&from != (void*)this );

            BOOST_ASSERT( !from.empty() && "Cannot transfer from empty container" );

            std::pair<BOOST_DEDUCED_TYPENAME base_type::ptr_iterator,bool> p =

                this->c_private().insert( *object.base() );     // strong

            if( p.second )

                from.c_private().erase( object.base() );        // nothrow

            return p.second;

        }

        template< class AssociatePtrCont >

        size_type single_transfer( BOOST_DEDUCED_TYPENAME AssociatePtrCont::iterator first,

                                   BOOST_DEDUCED_TYPENAME AssociatePtrCont::iterator last,

                                   AssociatePtrCont& from ) // basic

        {

            BOOST_ASSERT( (void*)&from != (void*)this );

            BOOST_ASSERT( !from.empty() && "Cannot transfer from empty container" );

            size_type res = 0;

            for( ; first != last; )

            {

                BOOST_ASSERT( first != from.end() );

                std::pair<BOOST_DEDUCED_TYPENAME base_type::ptr_iterator,bool> p =

                    this->c_private().insert( *first.base() );     // strong

                BOOST_DEDUCED_TYPENAME AssociatePtrCont::iterator 

                    to_delete( first );

                ++first;

                if( p.second )

                {

                    from.c_private().erase( to_delete.base() );   // nothrow

                    ++res;

                }

            }

            return res;

        }

     }; // class 'associative_ptr_container'

} // namespace 'ptr_container_detail'

} // namespace 'boost'

#endif