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// -*- C++ -*-

// Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 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 cc_hash_table_map_/resize_fn_imps.hpp

 * Contains implementations of cc_ht_map_'s resize related functions.

 */

PB_DS_CLASS_T_DEC

inline bool

PB_DS_CLASS_C_DEC::

do_resize_if_needed()

{

  if (!resize_base::is_resize_needed())

    return false;

  resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e));

  return true;

}

PB_DS_CLASS_T_DEC

void

PB_DS_CLASS_C_DEC::

do_resize(size_type len)

{ resize_imp(resize_base::get_nearest_larger_size(len)); }

PB_DS_CLASS_T_DEC

inline void

PB_DS_CLASS_C_DEC::

do_resize_if_needed_no_throw()

{

  if (!resize_base::is_resize_needed())

    return;

  __try

    {

      resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e));

    }

  __catch(...)

    { }

  PB_DS_ASSERT_VALID((*this))

}

PB_DS_CLASS_T_DEC

void

PB_DS_CLASS_C_DEC::

resize_imp(size_type new_size)

{

  PB_DS_ASSERT_VALID((*this))

  if (new_size == m_num_e)

    return;

  const size_type old_size = m_num_e;

  entry_pointer_array a_p_entries_resized;

  // Following line might throw an exception.

  ranged_hash_fn_base::notify_resized(new_size);

  __try

    {

      // Following line might throw an exception.

      a_p_entries_resized = s_entry_pointer_allocator.allocate(new_size);

      m_num_e = new_size;

    }

  __catch(...)

    {

      ranged_hash_fn_base::notify_resized(old_size);

      __throw_exception_again;

    }

  // At this point no exceptions can be thrown.

  resize_imp_no_exceptions(new_size, a_p_entries_resized, old_size);

  Resize_Policy::notify_resized(new_size);

  PB_DS_ASSERT_VALID((*this))

}

PB_DS_CLASS_T_DEC

void

PB_DS_CLASS_C_DEC::

resize_imp_no_exceptions(size_type new_size, entry_pointer_array a_p_entries_resized, size_type old_size)

{

  std::fill(a_p_entries_resized, a_p_entries_resized + m_num_e,

            entry_pointer(0));

  for (size_type pos = 0; pos < old_size; ++pos)

    {

      entry_pointer p_e = m_entries[pos];

      while (p_e != 0)

        p_e = resize_imp_no_exceptions_reassign_pointer(p_e, a_p_entries_resized,  traits_base::m_store_extra_indicator);

    }

  m_num_e = new_size;

  _GLIBCXX_DEBUG_ONLY(assert_entry_pointer_array_valid(a_p_entries_resized,

                                                       __FILE__, __LINE__);)

  s_entry_pointer_allocator.deallocate(m_entries, old_size);

  m_entries = a_p_entries_resized;

  PB_DS_ASSERT_VALID((*this))

}

#include <ext/pb_ds/detail/cc_hash_table_map_/resize_no_store_hash_fn_imps.hpp>

#include <ext/pb_ds/detail/cc_hash_table_map_/resize_store_hash_fn_imps.hpp>