1// -*- C++ -*-
2
3// Copyright (C) 2005, 2006, 2009 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 head.hpp
38 * Contains a leaf for a patricia tree.
39 */
40
41#ifndef PB_DS_PAT_TRIE_IHEAD_HPP
42#define PB_DS_PAT_TRIE_IHEAD_HPP
43
44#include <ext/pb_ds/detail/pat_trie_/node_base.hpp>
45#include <debug/debug.h>
46
47namespace __gnu_pbds
48{
49  namespace detail
50  {
51#define PB_DS_CLASS_T_DEC \
52    template<typename Type_Traits, typename E_Access_Traits,	\
53	      typename Metadata, typename Allocator>
54
55#define PB_DS_CLASS_C_DEC \
56    pat_trie_head<Type_Traits, E_Access_Traits,	Metadata, Allocator>
57
58#define PB_DS_BASE_C_DEC \
59    pat_trie_node_base<Type_Traits, E_Access_Traits, Metadata, Allocator>
60
61    template<typename Type_Traits,
62	     typename E_Access_Traits,
63	     typename Metadata,
64	     typename Allocator>
65    struct pat_trie_head : public PB_DS_BASE_C_DEC
66    {
67    private:
68      typedef E_Access_Traits e_access_traits;
69
70      typedef
71      typename Allocator::template rebind<
72	e_access_traits>::other::const_pointer
73      const_e_access_traits_pointer;
74
75      typedef
76      typename Allocator::template rebind<
77	PB_DS_BASE_C_DEC>::other::pointer
78      node_pointer;
79
80#ifdef _GLIBCXX_DEBUG
81      typedef
82      typename PB_DS_BASE_C_DEC::subtree_debug_info
83      subtree_debug_info;
84#endif
85
86    public:
87      pat_trie_head();
88
89#ifdef _GLIBCXX_DEBUG
90      virtual subtree_debug_info
91      assert_valid_imp(const_e_access_traits_pointer p_traits) const;
92#endif
93
94    public:
95      node_pointer m_p_min;
96
97      node_pointer m_p_max;
98    };
99
100    PB_DS_CLASS_T_DEC
101    PB_DS_CLASS_C_DEC::
102    pat_trie_head() : PB_DS_BASE_C_DEC(pat_trie_head_node_type)
103    { }
104
105#ifdef _GLIBCXX_DEBUG
106    PB_DS_CLASS_T_DEC
107    typename PB_DS_CLASS_C_DEC::subtree_debug_info
108    PB_DS_CLASS_C_DEC::
109    assert_valid_imp(const_e_access_traits_pointer /*p_traits*/) const
110    {
111      _GLIBCXX_DEBUG_ASSERT(false);
112      return subtree_debug_info();
113    }
114#endif
115
116#undef PB_DS_CLASS_T_DEC
117#undef PB_DS_CLASS_C_DEC
118#undef PB_DS_BASE_C_DEC
119
120  } // namespace detail
121} // namespace __gnu_pbds
122
123#endif
124
125