Transformation.h

//-*-C++-*-
/***************************************************************************
 *
 *   Copyright (C) 2008 by Willem van Straten
 *   Licensed under the Academic Free License version 2.1
 *
 ***************************************************************************/
 
// psrchive/More/MEAL/MEAL/Transformation.h
 
#ifndef __MEAL_Transformation_H
#define __MEAL_Transformation_H
 
#include "MEAL/Composite.h"
 
namespace MEAL {
 
 
  template<typename T>
  class Transformation : public T
  {
 
  public:
 
    Transformation ();
 
    ~Transformation () { }
 
    virtual void set_input (T* input);
 
    virtual T* get_input () { return input; }
 
    virtual void set_composite (Composite* c);
 
    virtual void set_input (Project<T>& _input) { input = _input; }
 
  protected:
 
    Project<T> input;
 
    Reference::To<Composite> composite;
 
  };
 
}
 
template<typename T>
MEAL::Transformation<T>::Transformation ()
{
  composite = new Composite(this);
  this->set_parameter_policy_context = false;
}
 
template<typename T>
void MEAL::Transformation<T>::set_input (T* _input) try
{
  if (!_input)
    return;
 
  if (input)
  {
    if (T::verbose)
      std::cerr << "MEAL::Transformation::set_input unmap old input"
                << std::endl;
 
    composite->unmap (input);
  }
 
  input = _input;
 
  if (T::verbose)
    std::cerr << "MEAL::Transformation::set_input map new input" 
              << std::endl;
 
  composite->map (input);
}
catch (Error& error)
{
  throw error += "MEAL::Transformation[" + this->get_name() + "]::set_input";
}
 
template<typename T>
void MEAL::Transformation<T>::set_composite (Composite* c)
{
  composite = c;
  this->set_parameter_policy (c);
}
 
#endif