BinaryRule.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2004 by Willem van Straten
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
// psrchive/More/MEAL/MEAL/BinaryRule.h
 
#ifndef __MEAL_BinaryRule_H
#define __MEAL_BinaryRule_H
 
#include "MEAL/Projection.h"
#include "MEAL/Composite.h"
 
namespace MEAL {

  template<class T>
  class BinaryRule : public T
  {
 
  public:

    BinaryRule () : composite(this)  { }

    BinaryRule (const BinaryRule& rule) : composite(this) { operator=(rule); }

    BinaryRule& operator = (const BinaryRule& rule);

    ~BinaryRule () { }

    void set_arg1 (T* model);

    void set_arg2 (T* model);
 
  protected:

    Project<T> arg1;

    Project<T> arg2;
 
  private:

    Composite composite;
 
  };
 
}
 
template<class T>
MEAL::BinaryRule<T>&
MEAL::BinaryRule<T>::operator = (const BinaryRule& rule)
{
  if (this == &rule)
    return *this;
 
  set_arg1 (rule.arg1);
  set_arg2 (rule.arg2);
 
  return *this;
}
 
 
template<class T>
void MEAL::BinaryRule<T>::set_arg1 (T* model)
{
  if (arg1)
    composite.unmap (arg1);
 
  arg1 = model;
 
  if (!model)
    return;
 
  if (T::verbose)
    std::cerr << "MEAL::BinaryRule::set_model map new model" << std::endl;
 
  composite.map (arg1);
}
 
template<class T>
void MEAL::BinaryRule<T>::set_arg2 (T* model)
{
  if (arg2)
    composite.unmap (arg2);
 
  arg2 = model;
 
  if (!model)
    return;
 
  if (T::verbose)
    std::cerr << "MEAL::BinaryRule::set_model map new model" << std::endl;
 
  composite.map (arg2);
}
 
 
#endif