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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 lu_map_.hpp

 * Contains a list update map.

 */

#include <utility>

#include <iterator>

#include <ext/pb_ds/detail/cond_dealtor.hpp>

#include <ext/pb_ds/tag_and_trait.hpp>

#include <ext/pb_ds/detail/types_traits.hpp>

#include <ext/pb_ds/detail/list_update_map_/entry_metadata_base.hpp>

#include <ext/pb_ds/exception.hpp>

#ifdef _GLIBCXX_DEBUG

#include <ext/pb_ds/detail/debug_map_base.hpp>

#endif 

#ifdef PB_DS_LU_MAP_TRACE_

#include <iostream>

#endif 

#include <debug/debug.h>

namespace __gnu_pbds

{

  namespace detail

  {

#define PB_DS_CLASS_T_DEC \

    template<typename Key, typename Mapped, class Eq_Fn, \

             class Allocator, class Update_Policy>

#ifdef PB_DS_DATA_TRUE_INDICATOR

#define PB_DS_CLASS_NAME lu_map_data_

#endif 

#ifdef PB_DS_DATA_FALSE_INDICATOR

#define PB_DS_CLASS_NAME lu_map_no_data_

#endif 

#define PB_DS_CLASS_C_DEC \

    PB_DS_CLASS_NAME<Key, Mapped, Eq_Fn, Allocator, Update_Policy>

#define PB_DS_TYPES_TRAITS_C_DEC \

    types_traits<Key, Mapped, Allocator, false>

#ifdef _GLIBCXX_DEBUG

#define PB_DS_DEBUG_MAP_BASE_C_DEC \

    debug_map_base<Key, Eq_Fn, \

              typename Allocator::template rebind<Key>::other::const_reference>

#endif 

#ifdef PB_DS_DATA_TRUE_INDICATOR

#define PB_DS_V2F(X) (X).first

#define PB_DS_V2S(X) (X).second

#define PB_DS_EP2VP(X)& ((X)->m_value)

#endif 

#ifdef PB_DS_DATA_FALSE_INDICATOR

#define PB_DS_V2F(X) (X)

#define PB_DS_V2S(X) Mapped_Data()

#define PB_DS_EP2VP(X)& ((X)->m_value.first)

#endif 

    /* Skip to the lu, my darling. */

    // list-based (with updates) associative container.

    template<typename Key,

             typename Mapped,

             class Eq_Fn,

             class Allocator,

             class Update_Policy>

    class PB_DS_CLASS_NAME :

#ifdef _GLIBCXX_DEBUG

      protected PB_DS_DEBUG_MAP_BASE_C_DEC,

#endif 

      public PB_DS_TYPES_TRAITS_C_DEC

    {

    private:

      typedef PB_DS_TYPES_TRAITS_C_DEC traits_base;

      struct entry

     : public lu_map_entry_metadata_base<typename Update_Policy::metadata_type>

      {

        typename traits_base::value_type m_value;

        typename Allocator::template rebind<entry>::other::pointer m_p_next;

      };

      typedef typename Allocator::template rebind<entry>::other entry_allocator;

      typedef typename entry_allocator::pointer entry_pointer;

      typedef typename entry_allocator::const_pointer const_entry_pointer;

      typedef typename entry_allocator::reference entry_reference;

      typedef typename entry_allocator::const_reference const_entry_reference;

      typedef typename Allocator::template rebind<entry_pointer>::other entry_pointer_allocator;

      typedef typename entry_pointer_allocator::pointer entry_pointer_array;

      typedef typename traits_base::value_type value_type_;

      typedef typename traits_base::pointer pointer_;

      typedef typename traits_base::const_pointer const_pointer_;

      typedef typename traits_base::reference reference_;

      typedef typename traits_base::const_reference const_reference_;

#define PB_DS_GEN_POS entry_pointer

#include <ext/pb_ds/detail/unordered_iterator/const_point_iterator.hpp>

#include <ext/pb_ds/detail/unordered_iterator/point_iterator.hpp>

#include <ext/pb_ds/detail/unordered_iterator/const_iterator.hpp>

#include <ext/pb_ds/detail/unordered_iterator/iterator.hpp>

#undef PB_DS_GEN_POS

#ifdef _GLIBCXX_DEBUG

      typedef PB_DS_DEBUG_MAP_BASE_C_DEC debug_base;

#endif 

      typedef cond_dealtor<entry, Allocator> cond_dealtor_t;

    public:

      typedef Allocator allocator_type;

      typedef typename Allocator::size_type size_type;

      typedef typename Allocator::difference_type difference_type;

      typedef Eq_Fn eq_fn;

      typedef Update_Policy update_policy;

      typedef typename Update_Policy::metadata_type update_metadata;

      typedef typename traits_base::key_type key_type;

      typedef typename traits_base::key_pointer key_pointer;

      typedef typename traits_base::const_key_pointer const_key_pointer;

      typedef typename traits_base::key_reference key_reference;

      typedef typename traits_base::const_key_reference const_key_reference;

      typedef typename traits_base::mapped_type mapped_type;

      typedef typename traits_base::mapped_pointer mapped_pointer;

      typedef typename traits_base::const_mapped_pointer const_mapped_pointer;

      typedef typename traits_base::mapped_reference mapped_reference;

      typedef typename traits_base::const_mapped_reference const_mapped_reference;

      typedef typename traits_base::value_type value_type;

      typedef typename traits_base::pointer pointer;

      typedef typename traits_base::const_pointer const_pointer;

      typedef typename traits_base::reference reference;

      typedef typename traits_base::const_reference const_reference;

#ifdef PB_DS_DATA_TRUE_INDICATOR

      typedef point_iterator_ point_iterator;

#endif 

#ifdef PB_DS_DATA_FALSE_INDICATOR

      typedef const_point_iterator_ point_iterator;

#endif 

      typedef const_point_iterator_ const_point_iterator;

#ifdef PB_DS_DATA_TRUE_INDICATOR

      typedef iterator_ iterator;

#endif 

#ifdef PB_DS_DATA_FALSE_INDICATOR

      typedef const_iterator_ iterator;

#endif 

      typedef const_iterator_ const_iterator;

    public:

      PB_DS_CLASS_NAME();

      PB_DS_CLASS_NAME(const PB_DS_CLASS_C_DEC&);

      virtual

      ~PB_DS_CLASS_NAME();

      template<typename It>

      PB_DS_CLASS_NAME(It first_it, It last_it);

      void

      swap(PB_DS_CLASS_C_DEC&);

      inline size_type

      size() const;

      inline size_type

      max_size() const;

      inline bool

      empty() const;

      inline mapped_reference

      operator[](const_key_reference r_key)

      {

#ifdef PB_DS_DATA_TRUE_INDICATOR

        _GLIBCXX_DEBUG_ONLY(assert_valid();)

        return insert(std::make_pair(r_key, mapped_type())).first->second;

#else 

        insert(r_key);

        return traits_base::s_null_mapped;

#endif 

      }

      inline std::pair<point_iterator, bool>

      insert(const_reference);

      inline point_iterator

      find(const_key_reference r_key)

      {

        _GLIBCXX_DEBUG_ONLY(assert_valid();)

        entry_pointer p_e = find_imp(r_key);

        return point_iterator(p_e == NULL ? NULL: &p_e->m_value);

      }

      inline const_point_iterator

      find(const_key_reference r_key) const

      {

        _GLIBCXX_DEBUG_ONLY(assert_valid();)

        entry_pointer p_e = find_imp(r_key);

        return const_point_iterator(p_e == NULL ? NULL: &p_e->m_value);

      }

      inline bool

      erase(const_key_reference);

      template<typename Pred>

      inline size_type

      erase_if(Pred);

      void

      clear();

      inline iterator

      begin();

      inline const_iterator

      begin() const;

      inline iterator

      end();

      inline const_iterator

      end() const;

#ifdef _GLIBCXX_DEBUG

      void

      assert_valid() const;

#endif 

#ifdef PB_DS_LU_MAP_TRACE_

      void

      trace() const;

#endif

    protected:

      template<typename It>

      void

      copy_from_range(It, It);

    private:

#ifdef PB_DS_DATA_TRUE_INDICATOR

      friend class iterator_;

#endif 

      friend class const_iterator_;

      inline entry_pointer

      allocate_new_entry(const_reference, false_type);

      inline entry_pointer

      allocate_new_entry(const_reference, true_type);

      template<typename Metadata>

      inline static void

      init_entry_metadata(entry_pointer, type_to_type<Metadata>);

      inline static void

      init_entry_metadata(entry_pointer, type_to_type<null_lu_metadata>);

      void

      deallocate_all();

      void

      erase_next(entry_pointer);

      void

      actual_erase_entry(entry_pointer);

      void

      inc_it_state(const_pointer& r_p_value, entry_pointer& r_pos) const

      {

        r_pos = r_pos->m_p_next;

        r_p_value = (r_pos == NULL) ? NULL : &r_pos->m_value;

      }

      template<typename Metadata>

      inline static bool

      apply_update(entry_pointer, type_to_type<Metadata>);

      inline static bool

      apply_update(entry_pointer, type_to_type<null_lu_metadata>);

      inline entry_pointer

      find_imp(const_key_reference) const;

      static entry_allocator s_entry_allocator;

      static Eq_Fn s_eq_fn;

      static Update_Policy s_update_policy;

      static type_to_type<update_metadata> s_metadata_type_indicator;

      static null_lu_metadata s_null_lu_metadata;

      mutable entry_pointer m_p_l;

    };

#include <ext/pb_ds/detail/list_update_map_/constructor_destructor_fn_imps.hpp>

#include <ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp>

#include <ext/pb_ds/detail/list_update_map_/debug_fn_imps.hpp>

#include <ext/pb_ds/detail/list_update_map_/iterators_fn_imps.hpp>

#include <ext/pb_ds/detail/list_update_map_/erase_fn_imps.hpp>

#include <ext/pb_ds/detail/list_update_map_/find_fn_imps.hpp>

#include <ext/pb_ds/detail/list_update_map_/insert_fn_imps.hpp>

#include <ext/pb_ds/detail/list_update_map_/trace_fn_imps.hpp>

#undef PB_DS_CLASS_T_DEC

#undef PB_DS_CLASS_C_DEC

#undef  PB_DS_TYPES_TRAITS_C_DEC

#undef PB_DS_DEBUG_MAP_BASE_C_DEC

#undef PB_DS_CLASS_NAME

#undef PB_DS_V2F

#undef PB_DS_EP2VP

#undef PB_DS_V2S

  } // namespace detail

} // namespace __gnu_pbds