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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/left_child_next_sibling_heap_/const_iterator.hpp')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/left_child_next_sibling_heap_/const_iterator.hpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/left_child_next_sibling_heap_/const_iterator.hpp b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/left_child_next_sibling_heap_/const_iterator.hpp new file mode 100644 index 000000000..5955df161 --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/left_child_next_sibling_heap_/const_iterator.hpp @@ -0,0 +1,162 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License as published by the Free Software +// Foundation; either version 3, or (at your option) any later +// version. + +// This library is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. + +// Permission to use, copy, modify, sell, and distribute this software +// is hereby granted without fee, provided that the above copyright +// notice appears in all copies, and that both that copyright notice +// and this permission notice appear in supporting documentation. None +// of the above authors, nor IBM Haifa Research Laboratories, make any +// representation about the suitability of this software for any +// purpose. It is provided "as is" without express or implied +// warranty. + +/** + * @file const_iterator.hpp + * Contains an iterator class returned by the table's const find and insert + * methods. + */ + +#ifndef PB_DS_LEFT_CHILD_NEXT_SIBLING_HEAP_CONST_ITERATOR_HPP +#define PB_DS_LEFT_CHILD_NEXT_SIBLING_HEAP_CONST_ITERATOR_HPP + +#include <ext/pb_ds/detail/left_child_next_sibling_heap_/const_point_iterator.hpp> +#include <debug/debug.h> + +namespace __gnu_pbds +{ + namespace detail + { + +#define PB_DS_CLASS_C_DEC \ + left_child_next_sibling_heap_const_iterator_<Node, Allocator> + +#define PB_DS_BASE_C_DEC \ + left_child_next_sibling_heap_node_const_point_iterator_<Node, Allocator> + + // Const point-type iterator. + template<typename Node, class Allocator> + class left_child_next_sibling_heap_const_iterator_ : public PB_DS_BASE_C_DEC + { + + private: + typedef typename PB_DS_BASE_C_DEC::node_pointer node_pointer; + + typedef PB_DS_BASE_C_DEC base_type; + + public: + + // Category. + typedef std::forward_iterator_tag iterator_category; + + // Difference type. + typedef typename Allocator::difference_type difference_type; + + // Iterator's value type. + typedef typename base_type::value_type value_type; + + // Iterator's pointer type. + typedef typename base_type::pointer pointer; + + // Iterator's const pointer type. + typedef typename base_type::const_pointer const_pointer; + + // Iterator's reference type. + typedef typename base_type::reference reference; + + // Iterator's const reference type. + typedef typename base_type::const_reference const_reference; + + public: + + inline + left_child_next_sibling_heap_const_iterator_(node_pointer p_nd) : base_type(p_nd) + { } + + // Default constructor. + inline + left_child_next_sibling_heap_const_iterator_() + { } + + // Copy constructor. + inline + left_child_next_sibling_heap_const_iterator_(const PB_DS_CLASS_C_DEC& other) : base_type(other) + { } + + // Compares content to a different iterator object. + inline bool + operator==(const PB_DS_CLASS_C_DEC& other) const + { return (base_type::m_p_nd == other.m_p_nd); } + + // Compares content (negatively) to a different iterator object. + inline bool + operator!=(const PB_DS_CLASS_C_DEC& other) const + { return (base_type::m_p_nd != other.m_p_nd); } + + inline PB_DS_CLASS_C_DEC& + operator++() + { + _GLIBCXX_DEBUG_ASSERT(base_type::m_p_nd != NULL); + inc(); + return (*this); + } + + inline PB_DS_CLASS_C_DEC + operator++(int) + { + PB_DS_CLASS_C_DEC ret_it(base_type::m_p_nd); + operator++(); + return (ret_it); + } + + private: + void + inc() + { + if (base_type::m_p_nd->m_p_next_sibling != NULL) + { + base_type::m_p_nd = base_type::m_p_nd->m_p_next_sibling; + while (base_type::m_p_nd->m_p_l_child != NULL) + base_type::m_p_nd = base_type::m_p_nd->m_p_l_child; + return; + } + + while (true) + { + node_pointer p_next = base_type::m_p_nd; + base_type::m_p_nd = base_type::m_p_nd->m_p_prev_or_parent; + if (base_type::m_p_nd == NULL || base_type::m_p_nd->m_p_l_child == p_next) + return; + } + } + }; + +#undef PB_DS_CLASS_C_DEC +#undef PB_DS_BASE_C_DEC + + } // namespace detail +} // namespace __gnu_pbds + +#endif |