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/usr/include/c++/11/ext/pb_ds/detail/rc_binomial_heap_/rc_binomial_heap_.hpp


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     1	// -*- C++ -*-
     2	
     3	// Copyright (C) 2005-2021 Free Software Foundation, Inc.
     4	//
     5	// This file is part of the GNU ISO C++ Library.  This library is free
     6	// software; you can redistribute it and/or modify it under the terms
     7	// of the GNU General Public License as published by the Free Software
     8	// Foundation; either version 3, or (at your option) any later
     9	// version.
    10	
    11	// This library is distributed in the hope that it will be useful, but
    12	// WITHOUT ANY WARRANTY; without even the implied warranty of
    13	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    14	// General Public License for more details.
    15	
    16	// Under Section 7 of GPL version 3, you are granted additional
    17	// permissions described in the GCC Runtime Library Exception, version
    18	// 3.1, as published by the Free Software Foundation.
    19	
    20	// You should have received a copy of the GNU General Public License and
    21	// a copy of the GCC Runtime Library Exception along with this program;
    22	// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    23	// <http://www.gnu.org/licenses/>.
    24	
    25	// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
    26	
    27	// Permission to use, copy, modify, sell, and distribute this software
    28	// is hereby granted without fee, provided that the above copyright
    29	// notice appears in all copies, and that both that copyright notice
    30	// and this permission notice appear in supporting documentation. None
    31	// of the above authors, nor IBM Haifa Research Laboratories, make any
    32	// representation about the suitability of this software for any
    33	// purpose. It is provided "as is" without express or implied
    34	// warranty.
    35	
    36	/**
    37	 * @file rc_binomial_heap_/rc_binomial_heap_.hpp
    38	 * Contains an implementation for redundant-counter binomial heap.
    39	 */
    40	
    41	#include <ext/pb_ds/detail/cond_dealtor.hpp>
    42	#include <ext/pb_ds/detail/type_utils.hpp>
    43	#include <ext/pb_ds/detail/binomial_heap_base_/binomial_heap_base_.hpp>
    44	#include <ext/pb_ds/detail/rc_binomial_heap_/rc.hpp>
    45	#include <debug/debug.h>
    46	
    47	namespace __gnu_pbds
    48	{
    49	  namespace detail
    50	  {
    51	#define PB_DS_CLASS_T_DEC \
    52	    template<typename Value_Type, typename Cmp_Fn, typename _Alloc>
    53	
    54	#define PB_DS_CLASS_C_DEC \
    55	    rc_binomial_heap<Value_Type, Cmp_Fn, _Alloc>
    56	
    57	#define PB_DS_RC_C_DEC \
    58	    rc<typename binomial_heap_base<Value_Type, Cmp_Fn, _Alloc>::node, _Alloc>
    59	
    60	    /**
    61	     *  Redundant-counter binomial heap.
    62	     *
    63	     *  @ingroup heap-detail
    64	     */
    65	    template<typename Value_Type, typename Cmp_Fn, typename _Alloc>
    66	    class rc_binomial_heap
    67	    : public binomial_heap_base<Value_Type, Cmp_Fn, _Alloc>
    68	    {
    69	    private:
    70	      typedef binomial_heap_base<Value_Type, Cmp_Fn, _Alloc>
    71	      							base_type;
    72	      typedef typename base_type::node_pointer 		node_pointer;
    73	      typedef typename base_type::node_const_pointer 	node_const_pointer;
    74	      typedef PB_DS_RC_C_DEC 				rc_t;
    75	
    76	    public:
    77	      typedef Value_Type 				value_type;
    78	      typedef typename _Alloc::size_type 		size_type;
    79	      typedef typename _Alloc::difference_type 		difference_type;
    80	      typedef typename base_type::pointer 		pointer;
    81	      typedef typename base_type::const_pointer 	const_pointer;
    82	      typedef typename base_type::reference 		reference;
    83	      typedef typename base_type::const_reference 	const_reference;
    84	      typedef typename base_type::point_const_iterator 	point_const_iterator;
    85	      typedef typename base_type::point_iterator 	point_iterator;
    86	      typedef typename base_type::const_iterator 	const_iterator;
    87	      typedef typename base_type::iterator 		iterator;
    88	      typedef typename base_type::cmp_fn 		cmp_fn;
    89	      typedef typename base_type::allocator_type 	allocator_type;
    90	
    91	      rc_binomial_heap();
    92	
    93	      rc_binomial_heap(const Cmp_Fn&);
    94	
    95	      rc_binomial_heap(const PB_DS_CLASS_C_DEC&);
    96	
    97	      ~rc_binomial_heap();
    98	
    99	      void
   100	      swap(PB_DS_CLASS_C_DEC&);
   101	
   102	      inline point_iterator
   103	      push(const_reference);
   104	
   105	      void
   106	      modify(point_iterator, const_reference);
   107	
   108	      inline void
   109	      pop();
   110	
   111	      void
   112	      erase(point_iterator);
   113	
   114	      inline void
   115	      clear();
   116	
   117	      template<typename Pred>
   118	      size_type
   119	      erase_if(Pred);
   120	
   121	      template<typename Pred>
   122	      void
   123	      split(Pred, PB_DS_CLASS_C_DEC&);
   124	
   125	      void
   126	      join(PB_DS_CLASS_C_DEC&);
   127	
   128	#ifdef _GLIBCXX_DEBUG
   129	      void
   130	      assert_valid(const char*, int) const;
   131	#endif
   132	
   133	#ifdef PB_DS_RC_BINOMIAL_HEAP_TRACE_
   134	      void
   135	      trace() const;
   136	#endif
   137	
   138	    private:
   139	
   140	      inline node_pointer
   141	      link_with_next_sibling(node_pointer);
   142	
   143	      void
   144	      make_0_exposed();
   145	
   146	      void
   147	      make_binomial_heap();
   148	
   149	#ifdef _GLIBCXX_DEBUG
   150	      static node_const_pointer
   151	      next_2_pointer(node_const_pointer);
   152	
   153	      static node_const_pointer
   154	      next_after_0_pointer(node_const_pointer);
   155	#endif
   156	
   157	      rc_t 			m_rc;
   158	    };
   159	
   160	#include <ext/pb_ds/detail/rc_binomial_heap_/constructors_destructor_fn_imps.hpp>
   161	#include <ext/pb_ds/detail/rc_binomial_heap_/debug_fn_imps.hpp>
   162	#include <ext/pb_ds/detail/rc_binomial_heap_/erase_fn_imps.hpp>
   163	#include <ext/pb_ds/detail/rc_binomial_heap_/trace_fn_imps.hpp>
   164	#include <ext/pb_ds/detail/rc_binomial_heap_/insert_fn_imps.hpp>
   165	#include <ext/pb_ds/detail/rc_binomial_heap_/split_join_fn_imps.hpp>
   166	
   167	#undef PB_DS_CLASS_C_DEC
   168	#undef PB_DS_CLASS_T_DEC
   169	#undef PB_DS_RC_C_DEC
   170	  } // namespace detail
   171	} // namespace __gnu_pbds