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EDITING: const_iterator.hpp

// -*- C++ -*-

// Copyright (C) 2005-2024 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/>.

// 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 left_child_next_sibling_heap_/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_/point_const_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, _Alloc>

#define PB_DS_BASIC_HEAP_CIT_BASE \
    left_child_next_sibling_heap_node_point_const_iterator_<Node, _Alloc>

/// Const point-type iterator.
    template<typename Node, typename _Alloc>
    class left_child_next_sibling_heap_const_iterator_
    : public PB_DS_BASIC_HEAP_CIT_BASE
    {
    private:
      typedef PB_DS_BASIC_HEAP_CIT_BASE 	      	base_type;
      typedef typename base_type::node_pointer		node_pointer;

public:
      /// Category.
      typedef std::forward_iterator_tag 		iterator_category;

/// Difference type.
      typedef typename _Alloc::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;

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.
      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.
      bool
      operator!=(const PB_DS_CLASS_C_DEC& other) const
      { return (base_type::m_p_nd != other.m_p_nd); }

PB_DS_CLASS_C_DEC&
      operator++()
      {
	_GLIBCXX_DEBUG_ASSERT(base_type::m_p_nd != 0);
	inc();
	return (*this);
      }

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 != 0)
	  {
	    base_type::m_p_nd = base_type::m_p_nd->m_p_next_sibling;
	    while (base_type::m_p_nd->m_p_l_child != 0)
	      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 == 0
		|| base_type::m_p_nd->m_p_l_child == p_next)
	      return;
	  }
      }
    };

#undef PB_DS_CLASS_C_DEC
#undef PB_DS_BASIC_HEAP_CIT_BASE

} // namespace detail
} // namespace __gnu_pbds

#endif

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📄 const_iterator.hpp	HPP	4.8 KB	2025-06-24 00:00	EDIT
📄 constructors_destructor_fn_imps.hpp	HPP	4 KB	2025-06-24 00:00	EDIT
📄 debug_fn_imps.hpp	HPP	4 KB	2025-06-24 00:00	EDIT
📄 erase_fn_imps.hpp	HPP	3.9 KB	2025-06-24 00:00	EDIT
📄 info_fn_imps.hpp	HPP	2.1 KB	2025-06-24 00:00	EDIT
📄 insert_fn_imps.hpp	HPP	5.1 KB	2025-06-24 00:00	EDIT
📄 iterators_fn_imps.hpp	HPP	2.5 KB	2025-06-24 00:00	EDIT
📄 left_child_next_sibling_heap_.hpp	HPP	8 KB	2025-06-24 00:00	EDIT
📄 node.hpp	HPP	3.2 KB	2025-06-24 00:00	EDIT
📄 point_const_iterator.hpp	HPP	4.3 KB	2025-06-24 00:00	EDIT
📄 policy_access_fn_imps.hpp	HPP	1.9 KB	2025-06-24 00:00	EDIT
📄 trace_fn_imps.hpp	HPP	2.8 KB	2025-06-24 00:00	EDIT

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