libstdc++
binary_heap_/point_const_iterator.hpp
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1// -*- C++ -*-
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3// Copyright (C) 2005-2019 Free Software Foundation, Inc.
4//
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16// Under Section 7 of GPL version 3, you are granted additional
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18// 3.1, as published by the Free Software Foundation.
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25// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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35
36/**
37 * @file binary_heap_/point_const_iterator.hpp
38 * Contains an iterator class returned by the table's const find and insert
39 * methods.
40 */
41
42#ifndef PB_DS_BINARY_HEAP_CONST_FIND_ITERATOR_HPP
43#define PB_DS_BINARY_HEAP_CONST_FIND_ITERATOR_HPP
44
46#include <debug/debug.h>
47
48namespace __gnu_pbds
49{
50 namespace detail
51 {
52 /// Const point-type iterator.
53 template<typename Value_Type, typename Entry, bool Simple,
54 typename _Alloc>
56 {
57 protected:
58 typedef typename _Alloc::template rebind<Entry>::other::pointer entry_pointer;
59
60 public:
61 /// Category.
63
64 /// Difference type.
66
67 /// Iterator's value type.
68 typedef Value_Type value_type;
69
70 /// Iterator's pointer type.
71 typedef typename _Alloc::template rebind<value_type>::other::pointer
73
74 /// Iterator's const pointer type.
75 typedef
76 typename _Alloc::template rebind<value_type>::other::const_pointer
78
79 /// Iterator's reference type.
80 typedef
81 typename _Alloc::template rebind<value_type>::other::reference
83
84 /// Iterator's const reference type.
85 typedef
86 typename _Alloc::template rebind<value_type>::other::const_reference
88
89 inline
90 binary_heap_point_const_iterator_(entry_pointer p_e) : m_p_e(p_e)
91 { }
92
93 /// Default constructor.
94 inline
96
97 /// Copy constructor.
98 inline
100 : m_p_e(other.m_p_e)
101 { }
102
103 /// Access.
104 inline const_pointer
106 {
107 _GLIBCXX_DEBUG_ASSERT(m_p_e != 0);
108 return to_ptr(integral_constant<int, Simple>());
109 }
110
111 /// Access.
112 inline const_reference
113 operator*() const
114 {
115 _GLIBCXX_DEBUG_ASSERT(m_p_e != 0);
116 return *to_ptr(integral_constant<int, Simple>());
117 }
118
119 /// Compares content to a different iterator object.
120 inline bool
122 { return m_p_e == other.m_p_e; }
123
124 /// Compares content (negatively) to a different iterator object.
125 inline bool
127 { return m_p_e != other.m_p_e; }
128
129 private:
130 inline const_pointer
131 to_ptr(true_type) const
132 { return m_p_e; }
133
134 inline const_pointer
135 to_ptr(false_type) const
136 { return *m_p_e; }
137
138 public:
139 entry_pointer m_p_e;
140 };
141 } // namespace detail
142} // namespace __gnu_pbds
143
144#endif
integral_constant< bool, false > false_type
The type used as a compile-time boolean with false value.
Definition: type_traits:78
void trivial_iterator_difference_type
Prohibit moving trivial iterators.
GNU extensions for policy-based data structures for public use.
A trivial iterator tag. Signifies that the iterators has none of std::iterators's movement abilities.
bool operator==(const binary_heap_point_const_iterator_ &other) const
Compares content to a different iterator object.
_Alloc::template rebind< value_type >::other::reference reference
Iterator's reference type.
binary_heap_point_const_iterator_(const binary_heap_point_const_iterator_ &other)
Copy constructor.
_Alloc::template rebind< value_type >::other::const_pointer const_pointer
Iterator's const pointer type.
_Alloc::template rebind< value_type >::other::pointer pointer
Iterator's pointer type.
_Alloc::template rebind< value_type >::other::const_reference const_reference
Iterator's const reference type.
bool operator!=(const binary_heap_point_const_iterator_ &other) const
Compares content (negatively) to a different iterator object.
trivial_iterator_difference_type difference_type
Difference type.