Var.hpp

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/*
 * $Id: Var.hpp 186 2014-10-22 09:25:06Z jdl3 $
 * Copyright (C) 2013, 2014 John D Lamb
 *
 * 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.
 * 
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef IPO_DETAIL_VAR_HPP
#define IPO_DETAIL_VAR_HPP

#include<limits>
#include"../IPOException.hpp"

namespace ipo {
  double constexpr infinity = std::numeric_limits<double>::infinity();
  double constexpr minusInfinity = -std::numeric_limits<double>::infinity();
  namespace detail {
    class ModelBase {
    public:
      virtual void notify() = 0;
    };
    class Var {
    public:
      Var( ModelBase& model );
      virtual ~Var() = 0;
      Var( Var& var ) : model( var.model ){}
      Var& operator=( Var& var );
      Var( Var&& var ) : model( var.model ){}
      Var& operator=( Var&& var );
      ModelBase const* const getModel() const { return &model; }
      virtual void summary( std::ostream& ostream = std::cout,
                std::string const& prefix = "" ) const = 0;
    protected:
      ModelBase& model;
    };
  }
}

#endif