libstdc++
binary_heap_/point_const_iterator.hpp
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1 // -*- C++ -*-
2 
3 // Copyright (C) 2005-2018 Free Software Foundation, Inc.
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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 
48 namespace __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
105  operator->() const
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
_Alloc::template rebind< value_type >::other::pointer pointer
Iterator's pointer type.
_Alloc::template rebind< value_type >::other::const_pointer const_pointer
Iterator's const pointer type.
GNU extensions for policy-based data structures for public use.
bool operator==(const binary_heap_point_const_iterator_ &other) const
Compares content to a different iterator object.
_Alloc::template rebind< value_type >::other::const_reference const_reference
Iterator's const reference type.
integral_constant< bool, false > false_type
The type used as a compile-time boolean with false value.
Definition: type_traits:78
bool operator!=(const binary_heap_point_const_iterator_ &other) const
Compares content (negatively) to a different iterator object.
void trivial_iterator_difference_type
Prohibit moving trivial iterators.
A trivial iterator tag. Signifies that the iterators has none of std::iterators's movement abilities.
binary_heap_point_const_iterator_(const binary_heap_point_const_iterator_ &other)
Copy constructor.
trivial_iterator_difference_type difference_type
Difference type.
_Alloc::template rebind< value_type >::other::reference reference
Iterator's reference type.