NodeBase.hpp

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// Copyright (c) 2017 Czech Technical University in Prague | Faculty of Information Technology. All rights reserved.
 
#pragma once
 
#include <string>
#include <iostream>
 
namespace node {
 
class NodeBase {
public:
    virtual ~NodeBase ( ) noexcept = default;
 
// ---------------------------------------------------------------------------------------------------------------------
 
 public:
// ---------------------------------------------------------------------------------------------------------------------
    friend ext::ostream & operator << ( ext::ostream & os, const NodeBase & instance ) {
        instance >> os;
        return os;
    }
 
    virtual void operator >> ( ext::ostream & os ) const = 0;
};
 
} // namespace node