DecoderBase.h

// This file may be redistributed and modified only under the terms of
// the GNU Lesser General Public License (See COPYING for details).
// Copyright (C) 2000 Stefanus Du Toit
 
// $Id$
 
#ifndef ATLAS_MESSAGE_DECODERBASE_H
#define ATLAS_MESSAGE_DECODERBASE_H
 
#include <Atlas/Bridge.h>
 
#include <map>
#include <string>
#include <vector>
#include <stack>
 
namespace Atlas { namespace Message {
 
class Element;
 
typedef std::map<std::string, Element> MapType;
typedef std::vector<Element> ListType;
 
 
class DecoderBase : public Bridge
{
public:
    DecoderBase();
 
    virtual ~DecoderBase();
 
    // Callback functions from Bridge
    virtual void streamBegin();
    virtual void streamMessage();
    virtual void streamEnd();
 
    virtual void mapMapItem(const std::string& name);
    virtual void mapListItem(const std::string& name);
    virtual void mapIntItem(const std::string& name, long);
    virtual void mapFloatItem(const std::string& name, double);
    virtual void mapStringItem(const std::string& name, const std::string&);
    virtual void mapEnd();
    
    virtual void listMapItem();
    virtual void listListItem();
    virtual void listIntItem(long);
    virtual void listFloatItem(double);
    virtual void listStringItem(const std::string&);
    virtual void listEnd();
    
protected:
 
    enum State {
        STATE_STREAM,
        STATE_MAP,
        STATE_LIST
    };
 
    std::stack<State> m_state;
    std::stack<MapType> m_maps;
    std::stack<ListType> m_lists;
    std::stack<std::string> m_names;
 
    virtual void messageArrived(const MapType& obj) = 0;
};
 
} } // namespace Atlas::Message
 
#endif