PDEOperator.hpp

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//  This file is part of ff3d - http://www.freefem.org/ff3d
//  Copyright (C) 2001, 2002, 2003 Stéphane Del Pino

//  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, or (at your option)
//  any later version.

//  This program 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 this program; if not, write to the Free Software Foundation,
//  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  

//  $Id: PDEOperator.hpp,v 1.5 2007/11/20 22:00:05 delpinux Exp $


#ifndef PDE_OPERATOR_HPP
#define PDE_OPERATOR_HPP

#include <ReferenceCounting.hpp>
#include <ScalarFunctionBase.hpp>

#include <string>
class UserFunction;
class PDEOperator
{
public:
  enum Type {
    firstorderop,
    firstorderopTransposed,
    divmugrad,
    secondorderop,
    massop
  };

protected:
  const PDEOperator::Type __type; 
  size_t __numberOfSubOperators; 
public:
  const size_t& numberOfSubOperators() const
  {
    return __numberOfSubOperators;
  }

  virtual std::string
  typeName() const = 0;

  const PDEOperator::Type&
  type() const
  {
    return __type;
  }

  virtual ConstReferenceCounting<PDEOperator>
  operator*(const ConstReferenceCounting<ScalarFunctionBase>& c) const=0; 

  virtual ConstReferenceCounting<PDEOperator>
  operator-() const=0; 

  friend std::ostream&
  operator << (std::ostream& os, const PDEOperator& pdeOperator)
  {
    os << pdeOperator.typeName();
    return os;
  }

  PDEOperator(const PDEOperator::Type& type,
              const size_t& numberOfSubOperators)
    : __type(type),
      __numberOfSubOperators(numberOfSubOperators)
  {
    ;
  }

  PDEOperator(const PDEOperator& P)
    : __type(P.__type),
      __numberOfSubOperators(P.__numberOfSubOperators)
  {
    ;
  }

  virtual ~PDEOperator()
  {
    ;
  }
};

#endif // PDE_OPERATOR_HPP

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