XCalculator.h

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/***************************************************************************
 *
 * Copyright (C) 2009 Cassio Neri Moreira
 *
 * This file is part of the KeyValue library.
 *
 * The KeyValue 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 of the License, or (at
 * your option) any later version.
 *
 * The KeyValue 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 KeyValue. If not, see <http://www.gnu.org/licenses/>.
 *
 **************************************************************************/

#ifndef KEYVALUE_MNGT_XCALCULATOR_H_
#define KEYVALUE_MNGT_XCALCULATOR_H_

#include "keyvalue/mngt/Calculator.h"
#include "keyvalue/value/Variant.h"

namespace keyvalue {

template <typename Tag>
class XCalculator : public Calculator<Tag> {

public:

  static Calculator&
  getInstance();

  value::Value
  getValue(const value::Variant& data) const;

private:

  XCalculator();

  static Calculator&
  getSingleton();

}; // class XCalculator

/*--------------------------------------------------------------------------
 * getInstance()
 *------------------------------------------------------------------------*/

template <typename Tag>
Calculator<Tag>&
XCalculator<Tag>::getInstance() {
  setGetter(getSingleton);
  return Calculator<Tag>::getInstance();
}

/*--------------------------------------------------------------------------
 * XCalculator()
 *------------------------------------------------------------------------*/

template <typename Tag>
XCalculator<Tag>::XCalculator() {
}

/*--------------------------------------------------------------------------
 * getSingleton()
 *------------------------------------------------------------------------*/

template <typename Tag>
Calculator<Tag>&
XCalculator<Tag>::getSingleton() {
  static XCalculator<Tag> singleton;
  return singleton;
}

} // namespace keyvalue

#endif // KEYVALUE_MNGT_XCALCULATOR_H_