The C and C++ Include Header Files

/usr/include/c++/11/ext/pb_ds/detail/binary_heap_/insert_fn_imps.hpp


$ cat -n /usr/include/c++/11/ext/pb_ds/detail/binary_heap_/insert_fn_imps.hpp

     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 binary_heap_/insert_fn_imps.hpp
    38	 * Contains an implementation class for a binary_heap.
    39	 */
    40	
    41	#ifdef PB_DS_CLASS_C_DEC
    42	
    43	PB_DS_CLASS_T_DEC
    44	inline typename PB_DS_CLASS_C_DEC::point_iterator
    45	PB_DS_CLASS_C_DEC::
    46	push(const_reference r_val)
    47	{
    48	  PB_DS_ASSERT_VALID((*this))
    49	  insert_value(r_val, s_no_throw_copies_ind);
    50	  push_heap();
    51	  PB_DS_ASSERT_VALID((*this))
    52	  return point_iterator(m_a_entries);
    53	}
    54	
    55	PB_DS_CLASS_T_DEC
    56	inline void
    57	PB_DS_CLASS_C_DEC::
    58	insert_value(value_type val, true_type)
    59	{
    60	  resize_for_insert_if_needed();
    61	  m_a_entries[m_size++] = val;
    62	}
    63	
    64	PB_DS_CLASS_T_DEC
    65	inline void
    66	PB_DS_CLASS_C_DEC::
    67	insert_value(const_reference r_val, false_type)
    68	{
    69	  resize_for_insert_if_needed();
    70	  pointer p_new = s_value_allocator.allocate(1);
    71	  cond_dealtor_t cond(p_new);
    72	  new (p_new) value_type(r_val);
    73	  cond.set_no_action();
    74	  m_a_entries[m_size++] = p_new;
    75	}
    76	
    77	PB_DS_CLASS_T_DEC
    78	inline void
    79	PB_DS_CLASS_C_DEC::
    80	resize_for_insert_if_needed()
    81	{
    82	  if (!resize_policy::resize_needed_for_grow(m_size))
    83	    {
    84	      _GLIBCXX_DEBUG_ASSERT(m_size < m_actual_size);
    85	      return;
    86	    }
    87	
    88	  const size_type new_size = resize_policy::get_new_size_for_grow();
    89	  entry_pointer new_entries = s_entry_allocator.allocate(new_size);
    90	  resize_policy::notify_grow_resize();
    91	
    92	  std::copy(m_a_entries, m_a_entries + m_size, new_entries);
    93	  s_entry_allocator.deallocate(m_a_entries, m_actual_size);
    94	  m_actual_size = new_size;
    95	  m_a_entries = new_entries;
    96	  make_heap();
    97	}
    98	
    99	PB_DS_CLASS_T_DEC
   100	void
   101	PB_DS_CLASS_C_DEC::
   102	modify(point_iterator it, const_reference r_new_val)
   103	{
   104	  PB_DS_ASSERT_VALID((*this))
   105	  swap_value_imp(it.m_p_e, r_new_val, s_no_throw_copies_ind);
   106	  fix(it.m_p_e);
   107	  PB_DS_ASSERT_VALID((*this))
   108	}
   109	
   110	PB_DS_CLASS_T_DEC
   111	void
   112	PB_DS_CLASS_C_DEC::
   113	fix(entry_pointer p_e)
   114	{
   115	  size_type i = p_e - m_a_entries;
   116	  if (i > 0 && entry_cmp::operator()(m_a_entries[parent(i)], m_a_entries[i]))
   117	    {
   118	      size_type parent_i = parent(i);
   119	      while (i > 0
   120		     && entry_cmp::operator()(m_a_entries[parent_i], m_a_entries[i]))
   121		{
   122		  std::swap(m_a_entries[i], m_a_entries[parent_i]);
   123		  i = parent_i;
   124		  parent_i = parent(i);
   125		}
   126	
   127	      PB_DS_ASSERT_VALID((*this))
   128	      return;
   129	    }
   130	
   131	  while (i < m_size)
   132	    {
   133	      const size_type lchild_i = left_child(i);
   134	      const size_type rchild_i = right_child(i);
   135	      _GLIBCXX_DEBUG_ASSERT(rchild_i > lchild_i);
   136	
   137	      const bool smaller_than_lchild = lchild_i < m_size &&
   138		entry_cmp::operator()(m_a_entries[i], m_a_entries[lchild_i]);
   139	
   140	      const bool smaller_than_rchild = rchild_i < m_size &&
   141		entry_cmp::operator()(m_a_entries[i], m_a_entries[rchild_i]);
   142	
   143	      const bool swap_with_rchild = smaller_than_rchild && (!smaller_than_lchild || entry_cmp::operator()(m_a_entries[lchild_i], m_a_entries[rchild_i]));
   144	
   145	      const bool swap_with_lchild = !swap_with_rchild && smaller_than_lchild;
   146	
   147	      if (swap_with_lchild)
   148		{
   149		  std::swap(m_a_entries[i], m_a_entries[lchild_i]);
   150		  i = lchild_i;
   151		}
   152	      else if (swap_with_rchild)
   153		{
   154		  std::swap(m_a_entries[i], m_a_entries[rchild_i]);
   155		  i = rchild_i;
   156		}
   157	      else
   158		i = m_size;
   159	    }
   160	}
   161	
   162	PB_DS_CLASS_T_DEC
   163	inline void
   164	PB_DS_CLASS_C_DEC::
   165	swap_value_imp(entry_pointer p_e, value_type new_val, true_type)
   166	{ *p_e = new_val; }
   167	
   168	PB_DS_CLASS_T_DEC
   169	inline void
   170	PB_DS_CLASS_C_DEC::
   171	swap_value_imp(entry_pointer p_e, const_reference r_new_val, false_type)
   172	{
   173	  value_type tmp(r_new_val);
   174	  (*p_e)->swap(tmp);
   175	}
   176	#endif