libstdc++
binary_heap_/const_iterator.hpp
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1 // -*- C++ -*-
2 
3 // Copyright (C) 2005-2018 Free Software Foundation, Inc.
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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_/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_ITERATOR_HPP
43 #define PB_DS_BINARY_HEAP_CONST_ITERATOR_HPP
44 
46 #include <debug/debug.h>
47 
48 namespace __gnu_pbds
49 {
50  namespace detail
51  {
52 #define PB_DS_BIN_HEAP_CIT_BASE \
53  binary_heap_point_const_iterator_<Value_Type, Entry, Simple, _Alloc>
54 
55  /// Const point-type iterator.
56  template<typename Value_Type,
57  typename Entry,
58  bool Simple,
59  typename _Alloc>
60  class binary_heap_const_iterator_ : public PB_DS_BIN_HEAP_CIT_BASE
61  {
62  private:
63  typedef PB_DS_BIN_HEAP_CIT_BASE base_type;
64  typedef typename base_type::entry_pointer entry_pointer;
65 
66  public:
67  /// Category.
69 
70  /// Difference type.
71  typedef typename _Alloc::difference_type difference_type;
72 
73  /// Iterator's value type.
75 
76  /// Iterator's pointer type.
77  typedef typename base_type::pointer pointer;
78 
79  /// Iterator's const pointer type.
81 
82  /// Iterator's reference type.
83  typedef typename base_type::reference reference;
84 
85  /// Iterator's const reference type.
87 
88  inline
89  binary_heap_const_iterator_(entry_pointer p_e) : base_type(p_e)
90  { }
91 
92  /// Default constructor.
93  inline
95  { }
96 
97  /// Copy constructor.
98  inline
100  : base_type(other)
101  { }
102 
103  /// Compares content to a different iterator object.
104  inline bool
106  { return base_type::m_p_e == other.m_p_e; }
107 
108  /// Compares content (negatively) to a different iterator object.
109  inline bool
111  { return base_type::m_p_e != other.m_p_e; }
112 
114  operator++()
115  {
116  _GLIBCXX_DEBUG_ASSERT(base_type::m_p_e != 0);
117  inc();
118  return *this;
119  }
120 
122  operator++(int)
123  {
124  binary_heap_const_iterator_ ret_it(base_type::m_p_e);
125  operator++();
126  return ret_it;
127  }
128 
129  private:
130  void
131  inc()
132  { ++base_type::m_p_e; }
133  };
134 
135 #undef PB_DS_BIN_HEAP_CIT_BASE
136  } // namespace detail
137 } // namespace __gnu_pbds
138 
139 #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.
_Alloc::difference_type difference_type
Difference type.
Forward iterators support a superset of input iterator operations.
GNU extensions for policy-based data structures for public use.
binary_heap_const_iterator_(const binary_heap_const_iterator_ &other)
Copy constructor.
base_type::reference reference
Iterator's reference type.
base_type::value_type value_type
Iterator's value type.
base_type::const_pointer const_pointer
Iterator's const pointer type.
bool operator!=(const binary_heap_const_iterator_ &other) const
Compares content (negatively) to a different iterator object.
base_type::const_reference const_reference
Iterator's const reference type.
_Alloc::template rebind< value_type >::other::const_reference const_reference
Iterator's const reference type.
bool operator==(const binary_heap_const_iterator_ &other) const
Compares content to a different iterator object.
base_type::pointer pointer
Iterator's pointer type.
_Alloc::template rebind< value_type >::other::reference reference
Iterator's reference type.