1 // -*- C++ -*- 2 3 // Copyright (C) 2005, 2006, 2009 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 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 45 #include <ext/pb_ds/detail/binary_heap_/const_point_iterator.hpp> 46 #include <debug/debug.h> 47 48 namespace __gnu_pbds 49 { 50 namespace detail 51 { 52 53 #define PB_DS_CLASS_C_DEC \ 54 binary_heap_const_iterator_<Value_Type, Entry, Simple, Allocator> 55 56 #define PB_DS_BASE_C_DEC \ 57 binary_heap_const_point_iterator_<Value_Type, Entry, Simple, Allocator> 58 59 // Const point-type iterator. 60 template<typename Value_Type, 61 typename Entry, 62 bool Simple, 63 class Allocator> 64 class binary_heap_const_iterator_ : public PB_DS_BASE_C_DEC 65 { 66 67 private: 68 typedef typename PB_DS_BASE_C_DEC::entry_pointer entry_pointer; 69 70 typedef PB_DS_BASE_C_DEC base_type; 71 72 public: 73 74 // Category. 75 typedef std::forward_iterator_tag iterator_category; 76 77 // Difference type. 78 typedef typename Allocator::difference_type difference_type; 79 80 // Iterator's value type. 81 typedef typename base_type::value_type value_type; 82 83 // Iterator's pointer type. 84 typedef typename base_type::pointer pointer; 85 86 // Iterator's const pointer type. 87 typedef typename base_type::const_pointer const_pointer; 88 89 // Iterator's reference type. 90 typedef typename base_type::reference reference; 91 92 // Iterator's const reference type. 93 typedef typename base_type::const_reference const_reference; 94 95 public: 96 97 inline 98 binary_heap_const_iterator_(entry_pointer p_e) : base_type(p_e) 99 { } 100 101 // Default constructor. 102 inline 103 binary_heap_const_iterator_() 104 { } 105 106 // Copy constructor. 107 inline 108 binary_heap_const_iterator_(const PB_DS_CLASS_C_DEC& other) : base_type(other) 109 { } 110 111 // Compares content to a different iterator object. 112 inline bool 113 operator==(const PB_DS_CLASS_C_DEC& other) const 114 { 115 return base_type::m_p_e == other.m_p_e; 116 } 117 118 // Compares content (negatively) to a different iterator object. 119 inline bool 120 operator!=(const PB_DS_CLASS_C_DEC& other) const 121 { 122 return base_type::m_p_e != other.m_p_e; 123 } 124 125 inline PB_DS_CLASS_C_DEC& 126 operator++() 127 { 128 _GLIBCXX_DEBUG_ASSERT(base_type::m_p_e != NULL); 129 inc(); 130 return *this; 131 } 132 133 inline PB_DS_CLASS_C_DEC 134 operator++(int) 135 { 136 PB_DS_CLASS_C_DEC ret_it(base_type::m_p_e); 137 operator++(); 138 return ret_it; 139 } 140 141 private: 142 void 143 inc() 144 { ++base_type::m_p_e; } 145 }; 146 147 #undef PB_DS_CLASS_C_DEC 148 #undef PB_DS_BASE_C_DEC 149 } // namespace detail 150 } // namespace __gnu_pbds 151 152 #endif 153
