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  1. // -*- C++ -*-
  2.  
  3. // Copyright (C) 2005-2015 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
  172.