Printable.h

/*
  Printable.h - Interface for classes that can be printed via Print
  Copyright (c) 2016 Arduino LLC.  All right reserved.
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  This library 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
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
 
#pragma once
 
#include <stdlib.h>
 
namespace arduino {
 
class Print;
 
class Printable
{
  public:
    virtual size_t printTo(Print& p) const = 0;
};
 
}