1169691Skan// -*- C++ -*- 2169691Skan 3169691Skan// Copyright (C) 2005, 2006 Free Software Foundation, Inc. 4169691Skan// 5169691Skan// This file is part of the GNU ISO C++ Library. This library is free 6169691Skan// software; you can redistribute it and/or modify it under the terms 7169691Skan// of the GNU General Public License as published by the Free Software 8169691Skan// Foundation; either version 2, or (at your option) any later 9169691Skan// version. 10169691Skan 11169691Skan// This library is distributed in the hope that it will be useful, but 12169691Skan// WITHOUT ANY WARRANTY; without even the implied warranty of 13169691Skan// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14169691Skan// General Public License for more details. 15169691Skan 16169691Skan// You should have received a copy of the GNU General Public License 17169691Skan// along with this library; see the file COPYING. If not, write to 18169691Skan// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 19169691Skan// MA 02111-1307, USA. 20169691Skan 21169691Skan// As a special exception, you may use this file as part of a free 22169691Skan// software library without restriction. Specifically, if other files 23169691Skan// instantiate templates or use macros or inline functions from this 24169691Skan// file, or you compile this file and link it with other files to 25169691Skan// produce an executable, this file does not by itself cause the 26169691Skan// resulting executable to be covered by the GNU General Public 27169691Skan// License. This exception does not however invalidate any other 28169691Skan// reasons why the executable file might be covered by the GNU General 29169691Skan// Public License. 30169691Skan 31169691Skan// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 32169691Skan 33169691Skan// Permission to use, copy, modify, sell, and distribute this software 34169691Skan// is hereby granted without fee, provided that the above copyright 35169691Skan// notice appears in all copies, and that both that copyright notice 36169691Skan// and this permission notice appear in supporting documentation. None 37169691Skan// of the above authors, nor IBM Haifa Research Laboratories, make any 38169691Skan// representation about the suitability of this software for any 39169691Skan// purpose. It is provided "as is" without express or implied 40169691Skan// warranty. 41169691Skan 42169691Skan/** 43169691Skan * @file node_metadata_selector.hpp 44169691Skan * Contains an implementation class for tries. 45169691Skan */ 46169691Skan 47169691Skan#ifndef PB_DS_TRIE_NODE_METADATA_SELECTOR_HPP 48169691Skan#define PB_DS_TRIE_NODE_METADATA_SELECTOR_HPP 49169691Skan 50169691Skan#include <ext/pb_ds/detail/basic_tree_policy/null_node_metadata.hpp> 51169691Skan#include <ext/pb_ds/detail/types_traits.hpp> 52169691Skan 53169691Skannamespace pb_ds 54169691Skan{ 55169691Skan namespace detail 56169691Skan { 57169691Skan 58169691Skan template<typename Node_Update, bool Null> 59169691Skan struct trie_metadata_helper 60169691Skan { 61169691Skan typedef typename Node_Update::metadata_type type; 62169691Skan }; 63169691Skan 64169691Skan template<typename Node_Update> 65169691Skan struct trie_metadata_helper< 66169691Skan Node_Update, 67169691Skan true> 68169691Skan { 69169691Skan typedef null_node_metadata type; 70169691Skan }; 71169691Skan 72169691Skan template<typename Key, 73169691Skan typename Data, 74169691Skan class Cmp_Fn, 75169691Skan template<typename Const_Node_Iterator, 76169691Skan class Const_Iterator, 77169691Skan class Cmp_Fn_, 78169691Skan class Allocator_> 79169691Skan class Node_Update, 80169691Skan class Allocator> 81169691Skan struct trie_node_metadata_selector 82169691Skan { 83169691Skan private: 84169691Skan typedef 85169691Skan dumconst_node_iterator< 86169691Skan Key, 87169691Skan Data, 88169691Skan Allocator> 89169691Skan dumconst_node_it; 90169691Skan 91169691Skan enum 92169691Skan { 93169691Skan null_update = 94169691Skan is_same< 95169691Skan Node_Update< 96169691Skan dumconst_node_it, 97169691Skan dumconst_node_it, 98169691Skan Cmp_Fn, 99169691Skan Allocator>, 100169691Skan null_trie_node_update< 101169691Skan dumconst_node_it, 102169691Skan dumconst_node_it, 103169691Skan Cmp_Fn, 104169691Skan Allocator> >::value 105169691Skan }; 106169691Skan 107169691Skan public: 108169691Skan typedef 109169691Skan typename trie_metadata_helper< 110169691Skan Node_Update< 111169691Skan dumconst_node_it, 112169691Skan dumconst_node_it, 113169691Skan Cmp_Fn, 114169691Skan Allocator>, 115169691Skan null_update>::type 116169691Skan type; 117169691Skan }; 118169691Skan 119169691Skan } // namespace detail 120169691Skan} // namespace pb_ds 121169691Skan 122169691Skan#endif // #ifndef PB_DS_TRIE_NODE_METADATA_SELECTOR_HPP 123