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/usr/include/c++/11/ext/pb_ds/detail/ov_tree_map_/traits.hpp


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     1	// -*- C++ -*-
     2	
     3	// Copyright (C) 2005-2021 Free Software Foundation, Inc.
     4	//
     5	// This file is part of the GNU ISO C++ Library.  This library is free
     6	// software; you can redistribute it and/or modify it under the terms
     7	// of the GNU General Public License as published by the Free Software
     8	// Foundation; either version 3, or (at your option) any later
     9	// version.
    10	
    11	// This library is distributed in the hope that it will be useful, but
    12	// WITHOUT ANY WARRANTY; without even the implied warranty of
    13	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    14	// General Public License for more details.
    15	
    16	// Under Section 7 of GPL version 3, you are granted additional
    17	// permissions described in the GCC Runtime Library Exception, version
    18	// 3.1, as published by the Free Software Foundation.
    19	
    20	// You should have received a copy of the GNU General Public License and
    21	// a copy of the GCC Runtime Library Exception along with this program;
    22	// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    23	// <http://www.gnu.org/licenses/>.
    24	
    25	// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
    26	
    27	// Permission to use, copy, modify, sell, and distribute this software
    28	// is hereby granted without fee, provided that the above copyright
    29	// notice appears in all copies, and that both that copyright notice
    30	// and this permission notice appear in supporting documentation. None
    31	// of the above authors, nor IBM Haifa Research Laboratories, make any
    32	// representation about the suitability of this software for any
    33	// purpose. It is provided "as is" without express or implied
    34	// warranty.
    35	
    36	/**
    37	 * @file ov_tree_map_/traits.hpp
    38	 * Contains an implementation class for ov_tree_.
    39	 */
    40	
    41	#ifndef PB_DS_OV_TREE_NODE_AND_IT_TRAITS_HPP
    42	#define PB_DS_OV_TREE_NODE_AND_IT_TRAITS_HPP
    43	
    44	#include <ext/pb_ds/detail/ov_tree_map_/node_iterators.hpp>
    45	
    46	namespace __gnu_pbds
    47	{
    48	  namespace detail
    49	  {
    50	    /// Tree traits.
    51	    /// @ingroup traits
    52	    template<typename Key,
    53		     typename Mapped,
    54		     class Cmp_Fn,
    55		     template<typename Node_CItr,
    56			      class Node_Itr,
    57			      class Cmp_Fn_,
    58			      typename _Alloc_>
    59	    class Node_Update,
    60		     typename _Alloc>
    61	    struct tree_traits<
    62	      Key,
    63	      Mapped,
    64	      Cmp_Fn,
    65	      Node_Update,
    66	      ov_tree_tag,
    67	      _Alloc>
    68	    {
    69	    private:
    70	      typedef
    71	      typename types_traits<
    72	      Key,
    73	      Mapped,
    74	      _Alloc,
    75	      false>::value_type
    76	      value_type;
    77	
    78	    public:
    79	      typedef
    80	      typename tree_node_metadata_dispatch<
    81	      Key,
    82	      Mapped,
    83	      Cmp_Fn,
    84	      Node_Update,
    85	      _Alloc>::type
    86	      metadata_type;
    87	
    88	      /// This is an iterator to an iterator: it iterates over nodes,
    89	      /// and de-referencing it returns one of the tree's iterators.
    90	      typedef
    91	      ov_tree_node_const_it_<
    92		value_type,
    93		metadata_type,
    94		_Alloc>
    95	      node_const_iterator;
    96	
    97	      typedef
    98	      ov_tree_node_it_<
    99		value_type,
   100		metadata_type,
   101		_Alloc>
   102	      node_iterator;
   103	
   104	      typedef
   105	      Node_Update<
   106		node_const_iterator,
   107		node_iterator,
   108		Cmp_Fn,
   109		_Alloc>
   110	      node_update;
   111	
   112	      typedef
   113	      __gnu_pbds::null_node_update<
   114		node_const_iterator,
   115		node_iterator,
   116		Cmp_Fn,
   117		_Alloc>* 
   118	      null_node_update_pointer;
   119	    };
   120	
   121	
   122	    /// Specialization.
   123	    /// @ingroup traits
   124	    template<typename Key,
   125		     class Cmp_Fn,
   126		     template<typename Node_CItr,
   127			      class Node_Itr,
   128			      class Cmp_Fn_,
   129			      typename _Alloc_>
   130	    class Node_Update,
   131		     typename _Alloc>
   132	    struct tree_traits<
   133	      Key,
   134	      null_type,
   135	      Cmp_Fn,
   136	      Node_Update,
   137	      ov_tree_tag,
   138	      _Alloc>
   139	    {
   140	    private:
   141	      typedef
   142	      typename types_traits<
   143	      Key,
   144	      null_type,
   145	      _Alloc,
   146	      false>::value_type
   147	      value_type;
   148	
   149	    public:
   150	      typedef
   151	      typename tree_node_metadata_dispatch<
   152	      Key,
   153	      null_type,
   154	      Cmp_Fn,
   155	      Node_Update,
   156	      _Alloc>::type
   157	      metadata_type;
   158	
   159	      /// This is an iterator to an iterator: it iterates over nodes,
   160	      /// and de-referencing it returns one of the tree's iterators.
   161	      typedef
   162	      ov_tree_node_const_it_<
   163		value_type,
   164		metadata_type,
   165		_Alloc>
   166	      node_const_iterator;
   167	
   168	      typedef node_const_iterator node_iterator;
   169	
   170	      typedef
   171	      Node_Update<
   172		node_const_iterator,
   173		node_const_iterator,
   174		Cmp_Fn,
   175		_Alloc>
   176	      node_update;
   177	
   178	      typedef
   179	      __gnu_pbds::null_node_update<
   180		node_const_iterator,
   181		node_iterator,
   182		Cmp_Fn,
   183		_Alloc>* 
   184	      null_node_update_pointer;
   185	    };
   186	  } // namespace detail
   187	} // namespace __gnu_pbds
   188	
   189	#endif // #ifndef PB_DS_OV_TREE_NODE_AND_IT_TRAITS_HPP
   190