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// -*- C++ -*-

// Copyright (C) 2005, 2006, 2009 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 3, 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.

// Under Section 7 of GPL version 3, you are granted additional

// permissions described in the GCC Runtime Library Exception, version

// 3.1, as published by the Free Software Foundation.

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

// a copy of the GCC Runtime Library Exception along with this program;

// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

// <http://www.gnu.org/licenses/>.

// 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 tree_trace_base.hpp

 * Contains tree-related policies.

 */

#ifndef PB_DS_TREE_TRACE_BASE_HPP

#define PB_DS_TREE_TRACE_BASE_HPP

#ifdef PB_DS_TREE_TRACE

#include <ext/pb_ds/detail/basic_tree_policy/basic_tree_policy_base.hpp>

#include <ext/pb_ds/detail/basic_tree_policy/null_node_metadata.hpp>

namespace __gnu_pbds

{

  namespace detail

  {

#ifdef PB_DS_TREE_TRACE

#define PB_DS_CLASS_T_DEC                                               \

    template<                                                           \

                                                class Const_Node_Iterator, \

                                                class Node_Iterator,    \

                                                class Cmp_Fn,           \

                                                bool Node_Based,        \

                                                class Allocator>

#define PB_DS_CLASS_C_DEC                                               \

    tree_trace_base<                                                    \

                                                Const_Node_Iterator,    \

                                                Node_Iterator,          \

                                                Cmp_Fn,                 \

                                                Node_Based,             \

                                                Allocator>

#define PB_DS_BASE_C_DEC                                                \

    basic_tree_policy_base<                             \

                                                                Const_Node_Iterator, \

                                                                Node_Iterator, \

                                                                Allocator>

    template<typename Const_Node_Iterator,

             class Node_Iterator,

             class Cmp_Fn,

             bool Node_Based,

             class Allocator>

    class tree_trace_base : private PB_DS_BASE_C_DEC

    {

    public:

      void

      trace() const;

    private:

      typedef PB_DS_BASE_C_DEC base_type;

      typedef Const_Node_Iterator const_node_iterator;

      typedef typename Allocator::size_type size_type;

    private:

      void

      trace_node(const_node_iterator nd_it, size_type level) const;

      virtual bool

      empty() const = 0;

      virtual const_node_iterator

      node_begin() const = 0;

      virtual const_node_iterator

      node_end() const = 0;

      static void

      print_node_pointer(Const_Node_Iterator nd_it, integral_constant<int,true>);

      static void

      print_node_pointer(Const_Node_Iterator nd_it, integral_constant<int,false>);

      template<typename Metadata_>

      static void

      trace_it_metadata(Const_Node_Iterator nd_it, type_to_type<Metadata_>);

      static void

      trace_it_metadata(Const_Node_Iterator, type_to_type<null_node_metadata>);

    };

    PB_DS_CLASS_T_DEC

    void

    PB_DS_CLASS_C_DEC::

    trace() const

    {

      if (empty())

        return;

      trace_node(node_begin(), 0);

    }

    PB_DS_CLASS_T_DEC

    void

    PB_DS_CLASS_C_DEC::

    trace_node(const_node_iterator nd_it, size_type level) const

    {

      if (nd_it.get_r_child() != node_end())

        trace_node(nd_it.get_r_child(), level + 1);

      for (size_type i = 0; i < level; ++i)

        std::cerr << ' ';

      print_node_pointer(nd_it, integral_constant<int,Node_Based>());

      std::cerr << base_type::extract_key(*(*nd_it));

      typedef

        type_to_type<

        typename const_node_iterator::metadata_type>

        m_type_ind_t;

      trace_it_metadata(nd_it, m_type_ind_t());

      std::cerr << std::endl;

      if (nd_it.get_l_child() != node_end())

        trace_node(nd_it.get_l_child(), level + 1);

    }

    PB_DS_CLASS_T_DEC

    template<typename Metadata_>

    void

    PB_DS_CLASS_C_DEC::

    trace_it_metadata(Const_Node_Iterator nd_it, type_to_type<Metadata_>)

    {

      std::cerr << " (" <<

        static_cast<unsigned long>(nd_it.get_metadata()) << ") ";

    }

    PB_DS_CLASS_T_DEC

    void

    PB_DS_CLASS_C_DEC::

    trace_it_metadata(Const_Node_Iterator, type_to_type<null_node_metadata>)

    { }

    PB_DS_CLASS_T_DEC

    void

    PB_DS_CLASS_C_DEC::

    print_node_pointer(Const_Node_Iterator nd_it, integral_constant<int,true>)

    {

      std::cerr << nd_it.m_p_nd << " ";

    }

    PB_DS_CLASS_T_DEC

    void

    PB_DS_CLASS_C_DEC::

    print_node_pointer(Const_Node_Iterator nd_it, integral_constant<int,false>)

    {

      std::cerr <<* nd_it << " ";

    }

#undef PB_DS_CLASS_T_DEC

#undef PB_DS_CLASS_C_DEC

#undef PB_DS_BASE_C_DEC

#endif // #ifdef    PB_DS_TREE_TRACE

  } // namespace detail

} // namespace __gnu_pbds

#endif // #ifdef PB_DS_TREE_TRACE

#endif // #ifndef PB_DS_TREE_TRACE_BASE_HPP