binary_heap_/point_const_iterator.hpp
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// -*- C++ -*-
// Copyright (C) 2005-2013 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
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// warranty.
/**
* @file binary_heap_/point_const_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 _Alloc>
class binary_heap_point_const_iterator_
{
protected:
typedef typename _Alloc::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 _Alloc::template rebind<value_type>::other::pointer
pointer;
/// Iterator's const pointer type.
typedef
typename _Alloc::template rebind<value_type>::other::const_pointer
const_pointer;
/// Iterator's reference type.
typedef
typename _Alloc::template rebind<value_type>::other::reference
reference;
/// Iterator's const reference type.
typedef
typename _Alloc::template rebind<value_type>::other::const_reference
const_reference;
inline
binary_heap_point_const_iterator_(entry_pointer p_e) : m_p_e(p_e)
{ }
/// Default constructor.
inline
binary_heap_point_const_iterator_() : m_p_e(0) { }
/// Copy constructor.
inline
binary_heap_point_const_iterator_(const binary_heap_point_const_iterator_& other)
: m_p_e(other.m_p_e)
{ }
/// Access.
inline const_pointer
operator->() const
{
_GLIBCXX_DEBUG_ASSERT(m_p_e != 0);
return to_ptr(integral_constant<int, Simple>());
}
/// Access.
inline const_reference
operator*() const
{
_GLIBCXX_DEBUG_ASSERT(m_p_e != 0);
return *to_ptr(integral_constant<int, Simple>());
}
/// Compares content to a different iterator object.
inline bool
operator==(const binary_heap_point_const_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_point_const_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