step.h

/***************************************************************************
                          step.h  -  description
                             -------------------
    begin                : Sat Dec 30 2006
    copyright            : (C) 2001 by Thies Jochimsen
    email                : jochimse@cns.mpg.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program 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 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef STEP_H
#define STEP_H

#include <odindata/data.h>



template<class T>
class Step {

 public:

  virtual ~Step() {}

  virtual STD_string label() const = 0;

  virtual STD_string description() const = 0;

  virtual T* allocate() const = 0;

  virtual void init() = 0;

  T* clone() const;

  void set_args(const STD_string& argstr);


  STD_string args_description() const;


  unsigned int numof_args() const {return args.numof_pars();}


  void append_opts(JcampDxBlock& parblock);


 protected:


  void append_arg(JcampDxClass& arg, const STD_string& arglabel);


  const char* c_label() const {if(!label_cache.size()) label_cache=label(); return label_cache.c_str();} // For Debug

 private:

  JcampDxBlock args;
  mutable STD_string label_cache;
};



template<class T>
class StepFactory {

 public:

  StepFactory(JcampDxBlock* parblock=0);

  ~StepFactory();

  T* create(const STD_string& label) const;

  STD_string manual() const;

  STD_string get_cmdline_usage(const STD_string& lineprefix) const;

 private:

  typedef STD_map<STD_string,T*> StepMap;
  StepMap templates;

  mutable STD_list<T*> garbage;

};


#endif