ClearSilverNodeComparatorValue.cc

/*
 * $Id: ClearSilverNodeComparatorValue.cc,v 1.4 2006/03/29 05:35:58 brook Exp $
 */

/*
 * ClearSilver++ Software License.
 *
 * Copyright (c) 2005,2006 Brook Milligan <brook@nmsu.edu>
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "ClearSilverNodeComparatorValue.h"
#include "ConstHDF.h"

using namespace std;

namespace ClearSilver
{
                                // constructors
  ClearSilverNodeComparatorValue::ClearSilverNodeComparatorValue ()
    : ClearSilverNodeComparator(), key_() {}

  ClearSilverNodeComparatorValue::ClearSilverNodeComparatorValue
  (const char* key)
    : ClearSilverNodeComparator(), key_(key) {}

  ClearSilverNodeComparatorValue::ClearSilverNodeComparatorValue
  (const string& key)
    : ClearSilverNodeComparator(), key_(key) {}

  ClearSilverNodeComparatorValue::ClearSilverNodeComparatorValue
  (const ClearSilverNodeComparatorValue& c)
  : ClearSilverNodeComparator(c), key_(c.key_) {}

  ClearSilverNodeComparatorValue::~ClearSilverNodeComparatorValue () throw() {}

                                // assignment
  ClearSilverNodeComparatorValue&
  ClearSilverNodeComparatorValue::operator =
  (const ClearSilverNodeComparatorValue& c)
  {
    ClearSilverNodeComparatorValue c_(c);
    swap(c_);
    return *this;
  }

  void
  ClearSilverNodeComparatorValue::swap
  (ClearSilverNodeComparatorValue& c) throw()
  {
    ClearSilverNodeComparator::swap (c);
    key_.swap (c.key_);
  }

                                // compare two nodes
  int
  ClearSilverNodeComparatorValue::operator () (const ConstHDF& n1,
                                               const ConstHDF& n2) const
  {
    if (n1[key_].value() < n2[key_].value())
      return -1;
    if (n1[key_].value() > n2[key_].value())
      return +1;
    return 0;
  }

};                              // namespace ClearSilver

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