| 1 |
35 |
ultra_embe |
// -*- C++ -*-
|
| 2 |
|
|
|
| 3 |
|
|
// Copyright (C) 2005, 2006, 2009, 2011 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 trie_policy/node_metadata_selector.hpp
|
| 38 |
|
|
* Contains an implementation class for tries.
|
| 39 |
|
|
*/
|
| 40 |
|
|
|
| 41 |
|
|
#ifndef PB_DS_TRIE_NODE_METADATA_DISPATCH_HPP
|
| 42 |
|
|
#define PB_DS_TRIE_NODE_METADATA_DISPATCH_HPP
|
| 43 |
|
|
|
| 44 |
|
|
#include <ext/pb_ds/detail/branch_policy/null_node_metadata.hpp>
|
| 45 |
|
|
#include <ext/pb_ds/detail/types_traits.hpp>
|
| 46 |
|
|
|
| 47 |
|
|
namespace __gnu_pbds
|
| 48 |
|
|
{
|
| 49 |
|
|
namespace detail
|
| 50 |
|
|
{
|
| 51 |
|
|
/**
|
| 52 |
|
|
* @addtogroup traits Traits
|
| 53 |
|
|
* @{
|
| 54 |
|
|
*/
|
| 55 |
|
|
|
| 56 |
|
|
/// Trie metadata helper.
|
| 57 |
|
|
template<typename Node_Update, bool _BTp>
|
| 58 |
|
|
struct trie_metadata_helper;
|
| 59 |
|
|
|
| 60 |
|
|
/// Specialization, false.
|
| 61 |
|
|
template<typename Node_Update>
|
| 62 |
|
|
struct trie_metadata_helper<Node_Update, false>
|
| 63 |
|
|
{
|
| 64 |
|
|
typedef typename Node_Update::metadata_type type;
|
| 65 |
|
|
};
|
| 66 |
|
|
|
| 67 |
|
|
/// Specialization, true.
|
| 68 |
|
|
template<typename Node_Update>
|
| 69 |
|
|
struct trie_metadata_helper<Node_Update, true>
|
| 70 |
|
|
{
|
| 71 |
|
|
typedef null_type type;
|
| 72 |
|
|
};
|
| 73 |
|
|
|
| 74 |
|
|
/// Trie node metadata dispatch.
|
| 75 |
|
|
template<typename Key,
|
| 76 |
|
|
typename Data,
|
| 77 |
|
|
typename Cmp_Fn,
|
| 78 |
|
|
template<typename Node_CItr,
|
| 79 |
|
|
typename Const_Iterator,
|
| 80 |
|
|
typename Cmp_Fn_,
|
| 81 |
|
|
typename _Alloc_>
|
| 82 |
|
|
class Node_Update,
|
| 83 |
|
|
typename _Alloc>
|
| 84 |
|
|
struct trie_node_metadata_dispatch
|
| 85 |
|
|
{
|
| 86 |
|
|
private:
|
| 87 |
|
|
typedef dumnode_const_iterator<Key, Data, _Alloc> __it_type;
|
| 88 |
|
|
typedef Node_Update<__it_type, __it_type, Cmp_Fn, _Alloc> __node_u;
|
| 89 |
|
|
typedef null_node_update<__it_type, __it_type, Cmp_Fn, _Alloc> __nnode_u;
|
| 90 |
|
|
|
| 91 |
|
|
enum
|
| 92 |
|
|
{
|
| 93 |
|
|
null_update = is_same<__node_u, __nnode_u>::value
|
| 94 |
|
|
};
|
| 95 |
|
|
|
| 96 |
|
|
public:
|
| 97 |
|
|
typedef typename trie_metadata_helper<__node_u, null_update>::type type;
|
| 98 |
|
|
};
|
| 99 |
|
|
//@}
|
| 100 |
|
|
} // namespace detail
|
| 101 |
|
|
} // namespace __gnu_pbds
|
| 102 |
|
|
|
| 103 |
|
|
#endif // #ifndef PB_DS_TRIE_NODE_METADATA_DISPATCH_HPP
|
