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// -*- 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>
#include <debug/debug.h>
namespace __gnu_pbds
{
namespace detail
{
// Const point-type iterator.
template<typename Value_Type, typename Entry, bool Simple,
typename 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;
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 binary_heap_const_point_iterator_& other)
: m_p_e(other.m_p_e)
{ }
// Access.
inline const_pointer
operator->() const
{
_GLIBCXX_DEBUG_ASSERT(m_p_e != NULL);
return to_ptr(integral_constant<int, Simple>());
}
// Access.
inline const_reference
operator*() const
{
_GLIBCXX_DEBUG_ASSERT(m_p_e != NULL);
return *to_ptr(integral_constant<int, Simple>());
}
// Compares content to a different iterator object.
inline bool
operator==(const binary_heap_const_point_iterator_& other) const
{ return m_p_e == other.m_p_e; }
// Compares content (negatively) to a different iterator object.
inline bool
operator!=(const binary_heap_const_point_iterator_& 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;
};
} // namespace detail
} // namespace __gnu_pbds
#endif
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