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// -*- C++ -*-

// Copyright (C) 2005 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 2, 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.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// As a special exception, you may use this file as part of a free software

// library without restriction.  Specifically, if other files instantiate

// templates or use macros or inline functions from this file, or you compile

// this file and link it with other files to produce an executable, this

// file does not by itself cause the resulting executable to be covered by

// the GNU General Public License.  This exception does not however

// invalidate any other reasons why the executable file might be covered by

// the GNU General Public License.

// 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 tree_split_example.cpp

 * A basic example showing how to split tree-based container objects.

 */

// For rb_tree_assoc_cntnr.

#include <ext/pb_assoc/assoc_cntnr.hpp>

// For assert

#include <cassert>

int

main()

{

  /*

   * A red-black tree table mapping ints to chars.

   */

  typedef pb_assoc::tree_assoc_cntnr< int, char> map_t;

  // A map_t object.

  map_t r;

  // Inserts some entries into r.

  for (int i = 0; i < 100; ++ i)

    r.insert(std::make_pair(i, 'a'));

  // Now split r into a different map_t object.

  // larger_r will hold the larger values following the split.

  map_t larger_r;

  // Split all elements larger than 1000 into larger_r. This is exception free.

  r.split(1000, larger_r);

  /*

   * Since there were no elements larger than 1000, r

   *    should be unchanged.

   **/

  assert(r.size() == 100);

  assert(r.begin()->first == 0);

  // Now perform a split which actually changes the content of r.

  // Split all elements larger than 3 into larger_r.

  r.split(3, larger_r);

  assert(r.size() == 4);

  assert(larger_r.begin()->first == 4);

}