libstdc++

rc_binomial_heap_.hpp
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1 // -*- C++ -*-
2
3 // Copyright (C) 2005-2013 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 rc_binomial_heap_/rc_binomial_heap_.hpp
38 * Contains an implementation for redundant-counter binomial heap.
39 */
40
41 #include <ext/pb_ds/detail/cond_dealtor.hpp>
42 #include <ext/pb_ds/detail/type_utils.hpp>
43 #include <ext/pb_ds/detail/binomial_heap_base_/binomial_heap_base_.hpp>
44 #include <ext/pb_ds/detail/rc_binomial_heap_/rc.hpp>
45 #include <debug/debug.h>
46
47 namespace __gnu_pbds
48 {
49 namespace detail
50 {
51 #define PB_DS_CLASS_T_DEC \
52 template<typename Value_Type, typename Cmp_Fn, typename _Alloc>
53
54 #define PB_DS_CLASS_C_DEC \
55 rc_binomial_heap<Value_Type, Cmp_Fn, _Alloc>
56
57 #define PB_DS_RC_C_DEC \
58 rc<typename binomial_heap_base<Value_Type, Cmp_Fn, _Alloc>::node, _Alloc>
59
60 /**
61 * Redundant-counter binomial heap.
62 *
63 * @ingroup heap-detail
64 */
65 template<typename Value_Type, typename Cmp_Fn, typename _Alloc>
66 class rc_binomial_heap
67 : public binomial_heap_base<Value_Type, Cmp_Fn, _Alloc>
68 {
69 private:
70 typedef binomial_heap_base<Value_Type, Cmp_Fn, _Alloc>
71 base_type;
72 typedef typename base_type::node_pointer node_pointer;
73 typedef typename base_type::node_const_pointer node_const_pointer;
74 typedef PB_DS_RC_C_DEC rc_t;
75
76 public:
77 typedef Value_Type value_type;
78 typedef typename _Alloc::size_type size_type;
79 typedef typename _Alloc::difference_type difference_type;
80 typedef typename base_type::pointer pointer;
81 typedef typename base_type::const_pointer const_pointer;
82 typedef typename base_type::reference reference;
83 typedef typename base_type::const_reference const_reference;
84 typedef typename base_type::point_const_iterator point_const_iterator;
85 typedef typename base_type::point_iterator point_iterator;
86 typedef typename base_type::const_iterator const_iterator;
87 typedef typename base_type::iterator iterator;
88 typedef typename base_type::cmp_fn cmp_fn;
89 typedef typename base_type::allocator_type allocator_type;
90
91 rc_binomial_heap();
92
93 rc_binomial_heap(const Cmp_Fn&);
94
95 rc_binomial_heap(const PB_DS_CLASS_C_DEC&);
96
97 ~rc_binomial_heap();
98
99 void
100 swap(PB_DS_CLASS_C_DEC&);
101
102 inline point_iterator
103 push(const_reference);
104
105 void
106 modify(point_iterator, const_reference);
107
108 inline void
109 pop();
110
111 void
112 erase(point_iterator);
113
114 inline void
115 clear();
116
117 template<typename Pred>
118 size_type
119 erase_if(Pred);
120
121 template<typename Pred>
122 void
123 split(Pred, PB_DS_CLASS_C_DEC&);
124
125 void
126 join(PB_DS_CLASS_C_DEC&);
127
128 #ifdef _GLIBCXX_DEBUG
129 void
130 assert_valid(const char*, int) const;
131 #endif
132
133 #ifdef PB_DS_RC_BINOMIAL_HEAP_TRACE_
134 void
135 trace() const;
136 #endif
137
138 private:
139
140 inline node_pointer
141 link_with_next_sibling(node_pointer);
142
143 void
144 make_0_exposed();
145
146 void
147 make_binomial_heap();
148
149 #ifdef _GLIBCXX_DEBUG
150 static node_const_pointer
151 next_2_pointer(node_const_pointer);
152
153 static node_const_pointer
154 next_after_0_pointer(node_const_pointer);
155 #endif
156
157 rc_t m_rc;
158 };
159
160 #include <ext/pb_ds/detail/rc_binomial_heap_/constructors_destructor_fn_imps.hpp>
161 #include <ext/pb_ds/detail/rc_binomial_heap_/debug_fn_imps.hpp>
162 #include <ext/pb_ds/detail/rc_binomial_heap_/erase_fn_imps.hpp>
163 #include <ext/pb_ds/detail/rc_binomial_heap_/trace_fn_imps.hpp>
164 #include <ext/pb_ds/detail/rc_binomial_heap_/insert_fn_imps.hpp>
165 #include <ext/pb_ds/detail/rc_binomial_heap_/split_join_fn_imps.hpp>
166
167 #undef PB_DS_CLASS_C_DEC
168 #undef PB_DS_CLASS_T_DEC
169 #undef PB_DS_RC_C_DEC
170 } // namespace detail
171 } // namespace __gnu_pbds