data-token.h

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/****
 Hierarchical Data Objects
 Copyright (C) 2005-2010 Werner Van Belle
 http://flow.yellowcouch.org/data/

 This program 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 2 of the License, or
 (at your option) any later version.
 
 This program 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 this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
****/
#ifndef __loaded__data_token_h__
#define __loaded__data_token_h__
using namespace std;
#line 1 "data-token.h++"
#include <vector>
#include <map>
#include "symbol.h"
using namespace std;

//---------------------------------------------------------------
//                            Token
//---------------------------------------------------------------
class Token: public DataClass
{
   struct TokenContent
     {
        map<Symbol, Data, symbolLesser> content;
        int refcount;
        TokenContent() : content() 
          {
             refcount = 1;
          };
     } * content;
 protected:
   virtual QString type_name() const 
     {
        return type(); 
     };
   virtual DataClass* shallow_copy() const 
     {
        return new Token(*this);
     };
   virtual void visit(DataVisitor&v);
 public:
   static QString type() 
     {
        return "Token";
     }
   Token();
   Token(const Token& dc);
   Token& operator = (const Token& dc);
   virtual ~Token();
   
   int count() const 
     {
        return content->content.size(); 
     };
   void define(Symbol key, Data val) 
     {
        content->content[key]=val;
     };
   virtual Data getField(QString s)
     {
        return content->content[Symbol(s)]; 
     }
   virtual void setField(QString s,Data d)
     {
        content->content[Symbol(s)]=d;
     }
   Data& operator[](Symbol s) const
     {
        return content->content[s]; 
     };
   Data& operator[](Symbol *s) const
     {
        return content->content[*s]; 
     };
   vector<Symbol> keys() const;
};
#endif // __loaded__data_token_h__

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