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/usr/include/c++/13/ext/pb_ds/detail/pat_trie_/traits.hpp


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     1	// -*- C++ -*-
     2	
     3	// Copyright (C) 2005-2023 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 pat_trie_/traits.hpp
    38	 * Contains an implementation class for pat_trie_.
    39	 */
    40	
    41	#ifndef PB_DS_PAT_TRIE_NODE_AND_IT_TRAITS_HPP
    42	#define PB_DS_PAT_TRIE_NODE_AND_IT_TRAITS_HPP
    43	
    44	#include <ext/pb_ds/detail/pat_trie_/pat_trie_base.hpp>
    45	#include <ext/pb_ds/detail/pat_trie_/synth_access_traits.hpp>
    46	
    47	namespace __gnu_pbds
    48	{
    49	  namespace detail
    50	  {
    51	    /// Specialization.
    52	    /// @ingroup traits
    53	    template<typename Key,
    54		     typename Mapped,
    55		     typename _ATraits,
    56		     template<typename Node_CItr,
    57			      typename Node_Itr,
    58			      typename Cmp_Fn_,
    59			      typename _Alloc_>
    60		     class Node_Update,
    61		     typename _Alloc>
    62	    struct trie_traits<Key, Mapped, _ATraits, Node_Update, pat_trie_tag, _Alloc>
    63	    {
    64	    private:
    65	      typedef pat_trie_base				    	base_type;
    66	      typedef types_traits<Key, Mapped, _Alloc, false> 		type_traits;
    67	
    68	    public:
    69	      typedef typename trie_node_metadata_dispatch<Key, Mapped, _ATraits, Node_Update, _Alloc>::type metadata_type;
    70	      typedef base_type::_Metadata<metadata_type, _Alloc>      	metadata;
    71	      typedef _ATraits 		       			       	access_traits;
    72	
    73	      /// Type for synthesized traits.
    74	      typedef __gnu_pbds::detail::synth_access_traits<type_traits, false, access_traits>   synth_access_traits;
    75	
    76	      typedef base_type::_Node_base<synth_access_traits, metadata>     	node;
    77	      typedef base_type::_Head<synth_access_traits, metadata>	       	head;
    78	      typedef base_type::_Leaf<synth_access_traits, metadata>	       	leaf;
    79	      typedef base_type::_Inode<synth_access_traits, metadata> 		inode;
    80	
    81	      typedef base_type::_Iter<node, leaf, head, inode, true>	       	iterator;
    82	      typedef base_type::_CIter<node, leaf, head, inode, true> 	 	const_iterator;
    83	      typedef base_type::_Iter<node, leaf, head, inode, false> 		reverse_iterator;
    84	      typedef base_type::_CIter<node, leaf, head, inode, false>	 	const_reverse_iterator;
    85	
    86	      /// This is an iterator to an iterator: it iterates over nodes,
    87	      /// and de-referencing it returns one of the tree's iterators.
    88	      typedef base_type::_Node_citer<node, leaf, head, inode, const_iterator, iterator, _Alloc> node_const_iterator;
    89	
    90	      typedef base_type::_Node_iter<node, leaf, head, inode, const_iterator, iterator, _Alloc> node_iterator;
    91	
    92	      /// Type for node update.
    93	      typedef Node_Update<node_const_iterator, node_iterator, _ATraits, _Alloc> 		node_update;
    94	
    95	      typedef null_node_update<node_const_iterator, node_iterator, _ATraits, _Alloc>* 		null_node_update_pointer;
    96	    };
    97	
    98	
    99	    /// Specialization.
   100	    /// @ingroup traits
   101	    template<typename Key,
   102		     typename _ATraits,
   103		     template<typename Node_CItr,
   104			      typename Node_Itr,
   105			      typename Cmp_Fn_,
   106			      typename _Alloc_>
   107		     class Node_Update,
   108		     typename _Alloc>
   109	    struct trie_traits<Key, null_type, _ATraits, Node_Update, pat_trie_tag, _Alloc>
   110	    {
   111	    private:
   112	      typedef pat_trie_base					base_type;
   113	      typedef types_traits<Key, null_type, _Alloc, false> 	type_traits;
   114	
   115	    public:
   116	      typedef typename trie_node_metadata_dispatch<Key, null_type, _ATraits, Node_Update, _Alloc>::type metadata_type;
   117	      typedef base_type::_Metadata<metadata_type, _Alloc>				metadata;
   118	      typedef _ATraits 				     					access_traits;
   119	
   120	      /// Type for synthesized traits.
   121	      typedef __gnu_pbds::detail::synth_access_traits<type_traits, true, access_traits> synth_access_traits;
   122	
   123	      typedef base_type::_Node_base<synth_access_traits, metadata>     	node;
   124	      typedef base_type::_Head<synth_access_traits, metadata> 	       	head;
   125	      typedef base_type::_Leaf<synth_access_traits, metadata> 	       	leaf;
   126	      typedef base_type::_Inode<synth_access_traits, metadata> 	       	inode;
   127	
   128	      typedef base_type::_CIter<node, leaf, head, inode, true> 		const_iterator;
   129	      typedef const_iterator 					       	iterator;
   130	      typedef base_type::_CIter<node, leaf, head, inode, false>	       	const_reverse_iterator;
   131	      typedef const_reverse_iterator 			       		reverse_iterator;
   132	
   133	      /// This is an iterator to an iterator: it iterates over nodes,
   134	      /// and de-referencing it returns one of the tree's iterators.
   135	      typedef base_type::_Node_citer<node, leaf, head, inode, const_iterator, iterator, _Alloc> node_const_iterator;
   136	
   137	      typedef node_const_iterator 								node_iterator;
   138	
   139	      /// Type for node update.
   140	      typedef Node_Update<node_const_iterator, node_iterator, _ATraits, _Alloc> 		node_update;
   141	
   142	      typedef null_node_update<node_const_iterator, node_const_iterator, _ATraits, _Alloc>* 	null_node_update_pointer;
   143	    };
   144	
   145	  } // namespace detail
   146	} // namespace __gnu_pbds
   147	
   148	#endif // #ifndef PB_DS_PAT_TRIE_NODE_AND_IT_TRAITS_HPP