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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 leaf.hpp

 * Contains a pat_trie_leaf for a patricia tree.

 */

#ifndef PB_DS_PAT_TRIE_LEAF_HPP

#define PB_DS_PAT_TRIE_LEAF_HPP

#include <debug/debug.h>

namespace __gnu_pbds

{

  namespace detail

  {

#define PB_DS_CLASS_T_DEC                                               \

    template<                                                           \

                                                class Type_Traits,      \

                                                class E_Access_Traits,  \

                                                class Metadata,         \

                                                class Allocator>

#define PB_DS_CLASS_C_DEC                                               \

    pat_trie_leaf<                                                      \

                                                Type_Traits,            \

                                                E_Access_Traits,        \

                                                Metadata,               \

                                                Allocator>

#define PB_DS_BASE_C_DEC                                        \

    pat_trie_node_base<                                         \

                                        Type_Traits,            \

                                        E_Access_Traits,        \

                                        Metadata,               \

                                        Allocator>

#define PB_DS_PAT_TRIE_SUBTREE_DEBUG_INFO_C_DEC                         \

    pat_trie_subtree_debug_info<                                        \

                                                        Type_Traits,    \

                                                        E_Access_Traits, \

                                                        Allocator>

    template<typename Type_Traits,

             class E_Access_Traits,

             class Metadata,

             class Allocator>

    struct pat_trie_leaf : public PB_DS_BASE_C_DEC

    {

    private:

      typedef typename Type_Traits::value_type value_type;

      typedef typename Type_Traits::const_reference const_reference;

      typedef typename Type_Traits::reference reference;

      typedef

      typename Allocator::template rebind<

        E_Access_Traits>::other::const_pointer

      const_e_access_traits_pointer;

#ifdef _GLIBCXX_DEBUG

      typedef

      typename PB_DS_BASE_C_DEC::subtree_debug_info

      subtree_debug_info;

#endif 

      typedef PB_DS_BASE_C_DEC base_type;

    public:

      pat_trie_leaf(const_reference r_val);

      inline reference

      value();

      inline const_reference

      value() const;

#ifdef _GLIBCXX_DEBUG

      virtual subtree_debug_info

      assert_valid_imp(const_e_access_traits_pointer p_traits) const;

      virtual

      ~pat_trie_leaf();

#endif 

    private:

      pat_trie_leaf(const PB_DS_CLASS_C_DEC& other);

      value_type m_value;

    };

    PB_DS_CLASS_T_DEC

    PB_DS_CLASS_C_DEC::

    pat_trie_leaf(const_reference r_val) :

    PB_DS_BASE_C_DEC(pat_trie_leaf_node_type), m_value(r_val)

    { }

    PB_DS_CLASS_T_DEC

    inline typename PB_DS_CLASS_C_DEC::reference

    PB_DS_CLASS_C_DEC::

    value()

    { return m_value; }

    PB_DS_CLASS_T_DEC

    inline typename PB_DS_CLASS_C_DEC::const_reference

    PB_DS_CLASS_C_DEC::

    value() const

    { return m_value; }

#ifdef _GLIBCXX_DEBUG

    PB_DS_CLASS_T_DEC

    typename PB_DS_CLASS_C_DEC::subtree_debug_info

    PB_DS_CLASS_C_DEC::

    assert_valid_imp(const_e_access_traits_pointer p_traits) const

    {

      _GLIBCXX_DEBUG_ASSERT(base_type::m_type == pat_trie_leaf_node_type);

      subtree_debug_info ret;

      const_reference r_val = value();

      return std::make_pair(p_traits->begin(p_traits->extract_key(r_val)),

                             p_traits->end(p_traits->extract_key(r_val)));

    }

    PB_DS_CLASS_T_DEC

    PB_DS_CLASS_C_DEC::

    ~pat_trie_leaf() { }

#endif 

#undef PB_DS_CLASS_T_DEC

#undef PB_DS_CLASS_C_DEC

#undef PB_DS_BASE_C_DEC

#undef PB_DS_PAT_TRIE_SUBTREE_DEBUG_INFO_C_DEC

  } // namespace detail

} // namespace __gnu_pbds

#endif