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Diffstat (limited to 'libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/const_point_iterator.hpp')
| -rw-r--r-- | libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/const_point_iterator.hpp | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/const_point_iterator.hpp b/libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/const_point_iterator.hpp new file mode 100644 index 00000000000..092a19a411a --- /dev/null +++ b/libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/const_point_iterator.hpp @@ -0,0 +1,210 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006 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 2, 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. + +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. + +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +// 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_point_iterator.hpp + * Contains an iterator class returned by the table's const find and insert + * methods. + */ + +#ifndef PB_DS_BINARY_HEAP_CONST_FIND_ITERATOR_HPP +#define PB_DS_BINARY_HEAP_CONST_FIND_ITERATOR_HPP + +#include <ext/pb_ds/tag_and_trait.hpp> + +namespace pb_ds +{ + namespace detail + { + +#ifdef BINARY_HEAP_DEBUG_ +#define PB_DS_DBG_ASSERT(X) assert(X) +#define PB_DS_DBG_VERIFY(X) assert(X) +#define PB_DS_DBG_ONLY(X) X +#else // #ifdef BINARY_HEAP_DEBUG_ +#define PB_DS_DBG_ASSERT(X) +#define PB_DS_DBG_VERIFY(X) {if((X)==0);} +#define PB_DS_DBG_ONLY(X) ;m_p_prev_or_parent +#endif // #ifdef BINARY_HEAP_DEBUG_ + +#define PB_DS_CLASS_T_DEC \ + template< \ + typename Value_Type, \ + typename Entry, \ + bool Simple, \ + class Allocator> + +#define PB_DS_CLASS_C_DEC \ + binary_heap_const_point_iterator_< \ + Value_Type, \ + Entry, \ + Simple, \ + Allocator> + + // Const point-type iterator. + template<typename Value_Type, + typename Entry, + bool Simple, + class Allocator> + class binary_heap_const_point_iterator_ + { + + protected: + typedef + typename Allocator::template rebind< + Entry>::other::pointer + entry_pointer; + + public: + + // Category. + typedef trivial_iterator_tag iterator_category; + + // Difference type. + typedef trivial_iterator_difference_type difference_type; + + // Iterator's value type. + typedef Value_Type value_type; + + // Iterator's pointer type. + typedef + typename Allocator::template rebind< + value_type>::other::pointer + pointer; + + // Iterator's const pointer type. + typedef + typename Allocator::template rebind< + value_type>::other::const_pointer + const_pointer; + + // Iterator's reference type. + typedef + typename Allocator::template rebind< + value_type>::other::reference + reference; + + // Iterator's const reference type. + typedef + typename Allocator::template rebind< + value_type>::other::const_reference + const_reference; + + public: + + inline + binary_heap_const_point_iterator_(entry_pointer p_e) : m_p_e(p_e) + { } + + // Default constructor. + inline + binary_heap_const_point_iterator_() + + : m_p_e(NULL) + { } + + // Copy constructor. + inline + binary_heap_const_point_iterator_(const PB_DS_CLASS_C_DEC& other) + + : m_p_e(other.m_p_e) + { } + + // Access. + inline const_pointer + operator->() const + { + PB_DS_DBG_ASSERT(m_p_e != NULL); + + return (to_ptr(integral_constant<int,Simple>())); + } + + // Access. + inline const_reference + operator*() const + { + PB_DS_DBG_ASSERT(m_p_e != NULL); + + return (*to_ptr(integral_constant<int,Simple>())); + } + + // Compares content to a different iterator object. + inline bool + operator==(const PB_DS_CLASS_C_DEC& other) const + { + return (m_p_e == other.m_p_e); + } + + // Compares content (negatively) to a different iterator object. + inline bool + operator!=(const PB_DS_CLASS_C_DEC& other) const + { + return (m_p_e != other.m_p_e); + } + + private: + inline const_pointer + to_ptr(true_type) const + { + return m_p_e; + } + + inline const_pointer + to_ptr(false_type) const + { + return* m_p_e; + } + + public: + entry_pointer m_p_e; + }; + +#undef PB_DS_CLASS_T_DEC +#undef PB_DS_CLASS_C_DEC + +#undef PB_DS_DBG_ASSERT +#undef PB_DS_DBG_VERIFY +#undef PB_DS_DBG_ONLY + + } // namespace detail +} // namespace pb_ds + +#endif // #ifndef PB_DS_BINARY_HEAP_CONST_FIND_ITERATOR_HPP |