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// -*- C++ -*-

// Copyright (C) 2005 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 2, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// As a special exception, you may use this file as part of a free software

// library without restriction.  Specifically, if other files instantiate

// templates or use macros or inline functions from this file, or you compile

// this file and link it with other files to produce an executable, this

// file does not by itself cause the resulting executable to be covered by

// the GNU General Public License.  This exception does not however

// invalidate any other reasons why the executable file might be covered by

// the GNU General Public License.

// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.

// Permission to use, copy, modify, sell, and distribute this software

// is hereby granted without fee, provided that the above copyright

// notice appears in all copies, and that both that copyright notice and

// this permission notice appear in supporting documentation. None of

// the above authors, nor IBM Haifa Research Laboratories, make any

// representation about the suitability of this software for any

// purpose. It is provided "as is" without express or implied warranty.

/**

 * @file it_.hpp

 * Contains an it_ for an adapter of mapping levels.

 */

#define PB_ASSOC_IT_C_DEC \

        it_< \

                It0, \

                It1, \

                Has_Data, \

                Const>

#define PB_ASSOC_OIT_T_DEC \

        template<class OIt0, class OIt1, bool OHas_Data, bool OConst>

#define PB_ASSOC_OIT_C_DEC \

        it_< \

                OIt0, \

                OIt1, \

                OHas_Data, \

                OConst>

template<class It0, class It1, bool Has_Data, bool Const>

class it_

{

public:

  typedef typename it_value_type_traits_t::value_type value_type;

  typedef typename it_value_type_traits_t::reference reference;

  typedef

  typename it_value_type_traits_t::const_reference

  const_reference;

  typedef typename it_value_type_traits_t::pointer pointer;

  typedef typename it_value_type_traits_t::const_pointer const_pointer;

public:

  inline

  it_(It0 it0 = It0(),

      It0 end_it0 = It0(),

      It1 it1 = It1()) : m_it0(it0),

                         m_end_it0(end_it0),

                         m_it1(it1)

  { }

  inline

  it_(const PB_ASSOC_IT_C_DEC& r_other) : m_it0(r_other.m_it0),

                                          m_end_it0(r_other.m_end_it0),

                                          m_it1(r_other.m_it1)

  { }

  PB_ASSOC_OIT_T_DEC

  inline

  it_(const PB_ASSOC_OIT_C_DEC& r_other) : m_it0(r_other.m_it0),

                                           m_end_it0(r_other.m_end_it0),

                                           m_it1(r_other.m_it1)

  { }

  inline bool

  operator==(const PB_ASSOC_IT_C_DEC& r_other) const

  {

    if (m_it0 != r_other.m_it0)

      return (false);

    if (m_it0 == m_end_it0)

      return (true);

    return (m_it1 == r_other.m_it1);

  }

  inline bool

  operator!=(const PB_ASSOC_IT_C_DEC& r_other) const

  {

    return (!operator==(r_other));

  }

  inline PB_ASSOC_IT_C_DEC&

  operator++()

  {

    ++m_it1;

    if (m_it1 == m_it0->second.end())

      do

        {

          ++m_it0;

        }

      while (m_it0 != m_end_it0&&  m_it0->second.empty());

    if (m_it0 != m_end_it0&&  !m_it0->second.empty())

      m_it1 = m_it0->second.begin();

    return (*this);

  }

  inline PB_ASSOC_IT_C_DEC

  operator++(int)

  {

    PB_ASSOC_IT_C_DEC ret =* this;

    operator++();

    return (ret);

  }

  inline const_pointer

  operator->() const

  {

    it_value_type_traits_t::make_valid(m_value_type_holder, m_it0->first, * m_it1);

    return (it_value_type_traits_t::recast(m_value_type_holder));

  }

  inline pointer

  operator->()

  {

    // Tmp Ami PB_ASSOC_STATIC_ASSERT(non_const, !Const);

    it_value_type_traits_t::make_valid(m_value_type_holder, m_it0->first, * m_it1);

    return (it_value_type_traits_t::recast(m_value_type_holder));

  }

  inline const_reference

  operator*() const

  {

    return (*operator->());

  }

  inline reference

  operator*()

  {

    PB_ASSOC_STATIC_ASSERT(non_const, !Const);

    return (*operator->());

  }

public:

  mutable It0 m_it0;

  It0 m_end_it0;

  mutable It1 m_it1;

  int_to_type<Has_Data> m_has_data;

private:

  mutable typename it_value_type_traits_t::value_type_holder m_value_type_holder;

};

#undef PB_ASSOC_IT_C_DEC

#undef PB_ASSOC_OIT_T_DEC

#undef PB_ASSOC_OIT_C_DEC