Atlas-C++
DecoderBase.h
00001 // This file may be redistributed and modified only under the terms of
00002 // the GNU Lesser General Public License (See COPYING for details).
00003 // Copyright (C) 2000 Stefanus Du Toit
00004 
00005 // $Id$
00006 
00007 #ifndef ATLAS_MESSAGE_DECODERBASE_H
00008 #define ATLAS_MESSAGE_DECODERBASE_H
00009 
00010 #include <Atlas/Bridge.h>
00011 
00012 #include <map>
00013 #include <string>
00014 #include <vector>
00015 #include <stack>
00016 
00017 namespace Atlas { namespace Message {
00018 
00019 class Element;
00020 
00021 typedef std::map<std::string, Element> MapType;
00022 typedef std::vector<Element> ListType;
00023 
00024 
00040 class DecoderBase : public Bridge
00041 {
00042 public:
00043     DecoderBase();
00044 
00045     virtual ~DecoderBase();
00046 
00047     // Callback functions from Bridge
00048     virtual void streamBegin();
00049     virtual void streamMessage();
00050     virtual void streamEnd();
00051 
00052     virtual void mapMapItem(const std::string& name);
00053     virtual void mapListItem(const std::string& name);
00054     virtual void mapIntItem(const std::string& name, long);
00055     virtual void mapFloatItem(const std::string& name, double);
00056     virtual void mapStringItem(const std::string& name, const std::string&);
00057     virtual void mapEnd();
00058     
00059     virtual void listMapItem();
00060     virtual void listListItem();
00061     virtual void listIntItem(long);
00062     virtual void listFloatItem(double);
00063     virtual void listStringItem(const std::string&);
00064     virtual void listEnd();
00065     
00066 protected:
00067 
00069     enum State {
00070         STATE_STREAM,
00071         STATE_MAP,
00072         STATE_LIST
00073     };
00074 
00076     std::stack<State> m_state;
00078     std::stack<MapType> m_maps;
00080     std::stack<ListType> m_lists;
00082     std::stack<std::string> m_names;
00083 
00085     virtual void messageArrived(const MapType& obj) = 0;
00086 };
00087 
00088 } } // namespace Atlas::Message
00089 
00090 #endif

Copyright 2000-2004 the respective authors.

This document can be licensed under the terms of the GNU Free Documentation License or the GNU General Public License and may be freely distributed under the terms given by one of these licenses.