graph_visitor.hpp

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//  This file is part of jdl_parser.
//
//  jdl_parser 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 3 of the License, or
//  (at your option) any later version.
//
//  jdl_parser 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 jdl_parser.  If not, see <http://www.gnu.org/licenses/>.

// Copyright Simone Pellegrini 2007-2008; e-mail: motonacciu@gmail.com

#ifndef DAG_VISITOR_HPP_
#define DAG_VISITOR_HPP_

#include "graph_node.hpp"

namespace graph{
        
class const_visitor{
public:
        virtual void visit(node const& node) = 0;
        virtual ~const_visitor(){}
};

class visitor{
public:
        virtual void visit(node& node) = 0;
        virtual ~visitor(){}
};
        
class dump_visitor : public const_visitor{
        int             indentation;
        ostream&        out;    
public:
        dump_visitor(int indent_): indentation(indent_), out(cout){}
        
        dump_visitor(int indent_, ostream& out_): indentation(indent_), out(out_){}
        
        void visit(node const& node);
        
        ~dump_visitor(){}
};
        
class acyclic_visitor : public const_visitor{
        std::vector<std::string> nodes;
public:
        void visit(node const& node);
        
        ~acyclic_visitor(){}
};
        
}

#endif /*DAG_VISITOR_HPP_*/

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