libstdc++
sample_trie_access_traits.hpp
Go to the documentation of this file.
00001 // -*- C++ -*-
00002 
00003 // Copyright (C) 2005, 2006, 2009, 2010 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the terms
00007 // of the GNU General Public License as published by the Free Software
00008 // Foundation; either version 3, or (at your option) any later
00009 // version.
00010 
00011 // This library is distributed in the hope that it will be useful, but
00012 // WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014 // General Public License for more details.
00015 
00016 // Under Section 7 of GPL version 3, you are granted additional
00017 // permissions described in the GCC Runtime Library Exception, version
00018 // 3.1, as published by the Free Software Foundation.
00019 
00020 // You should have received a copy of the GNU General Public License and
00021 // a copy of the GCC Runtime Library Exception along with this program;
00022 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00023 // <http://www.gnu.org/licenses/>.
00024 
00025 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
00026 
00027 // Permission to use, copy, modify, sell, and distribute this software
00028 // is hereby granted without fee, provided that the above copyright
00029 // notice appears in all copies, and that both that copyright notice
00030 // and this permission notice appear in supporting documentation. None
00031 // of the above authors, nor IBM Haifa Research Laboratories, make any
00032 // representation about the suitability of this software for any
00033 // purpose. It is provided "as is" without express or implied
00034 // warranty.
00035 
00036 /**
00037  * @file trie_policy/sample_trie_access_traits.hpp
00038  * Contains a sample probe policy.
00039  */
00040 
00041 #ifndef PB_DS_SAMPLE_TRIE_E_ACCESS_TRAITS_HPP
00042 #define PB_DS_SAMPLE_TRIE_E_ACCESS_TRAITS_HPP
00043 
00044 namespace __gnu_pbds
00045 {
00046   /// A sample trie element access traits.
00047   struct sample_trie_access_traits
00048   {
00049     typedef std::size_t                     size_type;
00050     typedef std::string                     key_type;
00051 
00052     typedef typename _Alloc::template rebind<key_type>  __rebind_k;
00053     typedef typename __rebind_k::other::const_reference key_const_reference;
00054     typedef std::string::const_iterator         const_iterator;
00055 
00056     /// Element type.
00057     typedef char                        e_type;
00058 
00059     enum
00060       {
00061     max_size = 4
00062       };
00063 
00064     /// Returns a const_iterator to the first element of r_key.
00065     inline static const_iterator
00066     begin(key_const_reference);
00067 
00068     /// Returns a const_iterator to the after-last element of r_key.
00069     inline static const_iterator
00070     end(key_const_reference);
00071 
00072     /// Maps an element to a position.
00073     inline static size_type
00074     e_pos(e_type);
00075   };
00076 }
00077 #endif // #ifndef PB_DS_SAMPLE_TRIE_E_ACCESS_TRAITS_HPP