Data Objects: data-visitor.h Source File

00001 /****
00002  Hierarchical Data Objects
00003  Copyright (C) 2005-2010 Werner Van Belle
00004  http://flow.yellowcouch.org/data/
00005 
00006  This program is free software; you can redistribute it and/or modify
00007  it under the terms of the GNU General Public License as published by
00008  the Free Software Foundation; either version 2 of the License, or
00009  (at your option) any later version.
00010  
00011  This program is distributed in the hope that it will be useful,
00012  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  GNU General Public License for more details.
00015 
00016  You should have received a copy of the GNU General Public License
00017  along with this program; if not, write to the Free Software
00018  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019 ****/
00020 #ifndef __loaded__data_visitor_h__
00021 #define __loaded__data_visitor_h__
00022 using namespace std;
00023 #line 1 "data-visitor.h++"
00024 #include <assert.h>
00025 #include "data.h"
00026 
00027 //===============================================================
00028 //                         Data Visitor
00029 //===============================================================
00030 class DataVisitor
00031 {
00032   friend class Token;
00033   friend class String;
00034   friend class Symbol;
00035   friend class IntegerClass<signed1,true,'b'>;   
00036   friend class IntegerClass<signed2,true,'w'>;    
00037   friend class IntegerClass<signed4,true,'i'>;   
00038   friend class IntegerClass<signed8,true,'l'>;   
00039   friend class IntegerClass<unsigned1,false,'b'>;
00040   friend class IntegerClass<unsigned2,false,'w'>;
00041   friend class IntegerClass<unsigned4,false,'i'>;
00042   friend class IntegerClass<unsigned8,false,'l'>;
00043   friend class FloatClass<float4,'f'>;
00044   friend class FloatClass<float8,'d'>;
00045  protected:
00046   // token visitors
00047   virtual void visit(Token &) {assert(0);}
00048   // array visitors
00049 #define ARRAY_TYPE(D,T) \
00050   friend class Array<D,T>; \
00051   virtual void visit(Array<D,T> &) {assert(0);};
00052   ARRAY_TYPES;
00053 #undef ARRAY_TYPE
00054   virtual void visit(String &)  {assert(0);};
00055   virtual void visit(Symbol &)  {assert(0);};
00056   // number visitors
00057   // the numbers are standard rerouted to the largest possible representation
00058   virtual void visit(Signed1 &nr);
00059   virtual void visit(Signed2 &nr);
00060   virtual void visit(Signed4 &nr);
00061   virtual void visit(Signed8 &nr);
00062   virtual void visit(Unsigned1 &nr);
00063   virtual void visit(Unsigned2 &nr);
00064   virtual void visit(Unsigned4 &nr);
00065   virtual void visit(Unsigned8 &nr);
00066   virtual void visitSignedNumber(signed8, char) {assert(0);};
00067   virtual void visitUnsignedNumber(unsigned8, char) {assert(0);};
00068   virtual void visit(Float4 &) { assert(0); };
00069   virtual void visit(Float8 &) { assert(0); };
00070  public:
00071   void visit(Data & data);
00072   void visit(DataClass & data);
00073   virtual ~DataVisitor() {};
00074 };
00075 #endif // __loaded__data_visitor_h__