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// -*- C++ -*-

// Copyright (C) 2005, 2006, 2009, 2011 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 rc_binomial_heap_/rc_binomial_heap_.hpp

 * Contains an implementation for redundant-counter binomial heap.

 */

#include <ext/pb_ds/detail/cond_dealtor.hpp>

#include <ext/pb_ds/detail/type_utils.hpp>

#include <ext/pb_ds/detail/binomial_heap_base_/binomial_heap_base_.hpp>

#include <ext/pb_ds/detail/rc_binomial_heap_/rc.hpp>

#include <debug/debug.h>

namespace __gnu_pbds

{

  namespace detail

  {

#define PB_DS_CLASS_T_DEC \

    template<typename Value_Type, typename Cmp_Fn, typename _Alloc>

#define PB_DS_CLASS_C_DEC \

    rc_binomial_heap<Value_Type, Cmp_Fn, _Alloc>

#define PB_DS_RC_C_DEC \

    rc<typename binomial_heap_base<Value_Type, Cmp_Fn, _Alloc>::node, _Alloc>

    /**

     *  Redundant-counter binomial heap.

     *

     *  @ingroup heap-detail

     */

    template<typename Value_Type, typename Cmp_Fn, typename _Alloc>

    class rc_binomial_heap

    : public binomial_heap_base<Value_Type, Cmp_Fn, _Alloc>

    {

    private:

      typedef binomial_heap_base<Value_Type, Cmp_Fn, _Alloc>

                                                        base_type;

      typedef typename base_type::node_pointer          node_pointer;

      typedef typename base_type::node_const_pointer    node_const_pointer;

      typedef PB_DS_RC_C_DEC                            rc_t;

    public:

      typedef Value_Type                                value_type;

      typedef typename _Alloc::size_type                size_type;

      typedef typename _Alloc::difference_type          difference_type;

      typedef typename base_type::pointer               pointer;

      typedef typename base_type::const_pointer         const_pointer;

      typedef typename base_type::reference             reference;

      typedef typename base_type::const_reference       const_reference;

      typedef typename base_type::point_const_iterator  point_const_iterator;

      typedef typename base_type::point_iterator        point_iterator;

      typedef typename base_type::const_iterator        const_iterator;

      typedef typename base_type::iterator              iterator;

      typedef typename base_type::cmp_fn                cmp_fn;

      typedef typename base_type::allocator_type        allocator_type;

      rc_binomial_heap();

      rc_binomial_heap(const Cmp_Fn&);

      rc_binomial_heap(const PB_DS_CLASS_C_DEC&);

      ~rc_binomial_heap();

      void

      swap(PB_DS_CLASS_C_DEC&);

      inline point_iterator

      push(const_reference);

      void

      modify(point_iterator, const_reference);

      inline void

      pop();

      void

      erase(point_iterator);

      inline void

      clear();

      template<typename Pred>

      size_type

      erase_if(Pred);

      template<typename Pred>

      void

      split(Pred, PB_DS_CLASS_C_DEC&);

      void

      join(PB_DS_CLASS_C_DEC&);

#ifdef _GLIBCXX_DEBUG

      void

      assert_valid(const char*, int) const;

#endif

#ifdef PB_DS_RC_BINOMIAL_HEAP_TRACE_

      void

      trace() const;

#endif

    private:

      inline node_pointer

      link_with_next_sibling(node_pointer);

      void

      make_0_exposed();

      void

      make_binomial_heap();

#ifdef _GLIBCXX_DEBUG

      static node_const_pointer

      next_2_pointer(node_const_pointer);

      static node_const_pointer

      next_after_0_pointer(node_const_pointer);

#endif

      rc_t                      m_rc;

    };

#include <ext/pb_ds/detail/rc_binomial_heap_/constructors_destructor_fn_imps.hpp>

#include <ext/pb_ds/detail/rc_binomial_heap_/debug_fn_imps.hpp>

#include <ext/pb_ds/detail/rc_binomial_heap_/erase_fn_imps.hpp>

#include <ext/pb_ds/detail/rc_binomial_heap_/trace_fn_imps.hpp>

#include <ext/pb_ds/detail/rc_binomial_heap_/insert_fn_imps.hpp>

#include <ext/pb_ds/detail/rc_binomial_heap_/split_join_fn_imps.hpp>

#undef PB_DS_CLASS_C_DEC

#undef PB_DS_CLASS_T_DEC

#undef PB_DS_RC_C_DEC

  } // namespace detail

} // namespace __gnu_pbds