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// -*- C++ -*- |
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// Copyright (C) 2005-2013 Free Software Foundation, Inc. |
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// |
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// This file is part of the GNU ISO C++ Library. This library is free |
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// software; you can redistribute it and/or modify it under the terms |
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// of the GNU General Public License as published by the Free Software |
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// Foundation; either version 3, or (at your option) any later |
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// version. |
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// This library is distributed in the hope that it will be useful, but |
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// WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// General Public License for more details. |
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// Under Section 7 of GPL version 3, you are granted additional |
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// permissions described in the GCC Runtime Library Exception, version |
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// 3.1, as published by the Free Software Foundation. |
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// You should have received a copy of the GNU General Public License and |
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// a copy of the GCC Runtime Library Exception along with this program; |
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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// . |
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. |
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// Permission to use, copy, modify, sell, and distribute this software |
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// is hereby granted without fee, provided that the above copyright |
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// notice appears in all copies, and that both that copyright notice |
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// and this permission notice appear in supporting documentation. None |
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// of the above authors, nor IBM Haifa Research Laboratories, make any |
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// representation about the suitability of this software for any |
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// purpose. It is provided "as is" without express or implied |
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// warranty. |
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/** |
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* @file trie_policy/node_metadata_selector.hpp |
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* Contains an implementation class for tries. |
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*/ |
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#ifndef PB_DS_TRIE_NODE_METADATA_DISPATCH_HPP |
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#define PB_DS_TRIE_NODE_METADATA_DISPATCH_HPP |
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#include |
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#include |
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namespace __gnu_pbds |
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{ |
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namespace detail |
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{ |
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/** |
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* @addtogroup traits Traits |
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* @{ |
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*/ |
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/// Trie metadata helper. |
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template |
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struct trie_metadata_helper; |
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/// Specialization, false. |
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template |
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struct trie_metadata_helper |
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{ |
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typedef typename Node_Update::metadata_type type; |
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}; |
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/// Specialization, true. |
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template |
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struct trie_metadata_helper |
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{ |
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typedef null_type type; |
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}; |
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/// Trie node metadata dispatch. |
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template |
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typename Data, |
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typename Cmp_Fn, |
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template |
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typename Const_Iterator, |
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typename Cmp_Fn_, |
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typename _Alloc_> |
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class Node_Update, |
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typename _Alloc> |
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struct trie_node_metadata_dispatch |
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{ |
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private: |
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typedef dumnode_const_iterator __it_type; |
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typedef Node_Update<__it_type, __it_type, Cmp_Fn, _Alloc> __node_u; |
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typedef null_node_update<__it_type, __it_type, Cmp_Fn, _Alloc> __nnode_u; |
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enum |
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{ |
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null_update = is_same<__node_u, __nnode_u>::value |
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}; |
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public: |
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typedef typename trie_metadata_helper<__node_u, null_update>::type type; |
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}; |
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//@} |
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} // namespace detail |
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} // namespace __gnu_pbds |
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#endif // #ifndef PB_DS_TRIE_NODE_METADATA_DISPATCH_HPP |