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 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 45 #include <ext/pb_ds/tag_and_trait.hpp> 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> 55 class binary_heap_point_const_iterator_ 56 { 57 protected: 58 typedef typename _Alloc::template rebind<Entry>::other::pointer entry_pointer; 59 60 public: 61 /// Category. 62 typedef trivial_iterator_tag iterator_category; 63 64 /// Difference type. 65 typedef trivial_iterator_difference_type 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 72 pointer; 73 74 /// Iterator's const pointer type. 75 typedef 76 typename _Alloc::template rebind<value_type>::other::const_pointer 77 const_pointer; 78 79 /// Iterator's reference type. 80 typedef 81 typename _Alloc::template rebind<value_type>::other::reference 82 reference; 83 84 /// Iterator's const reference type. 85 typedef 86 typename _Alloc::template rebind<value_type>::other::const_reference 87 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 95 binary_heap_point_const_iterator_() : m_p_e(0) { } 96 97 /// Copy constructor. 98 inline 99 binary_heap_point_const_iterator_(const binary_heap_point_const_iterator_& other) 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 121 operator==(const binary_heap_point_const_iterator_& other) const 122 { return m_p_e == other.m_p_e; } 123 124 /// Compares content (negatively) to a different iterator object. 125 inline bool 126 operator!=(const binary_heap_point_const_iterator_& other) const 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 145
