/**
** Copyright (C) 1999-2007 Lorenzo Bettini
** 
http://www.lorenzobettini.it

 r2 = r2 XOR (1<<10);
 cout << "hello world" << endl;
** 
*/
// this file also contains the definition of mysum as a #define
// textgenerator.h : Text Generator class &&
#ifndef _TEXTGEN_H
#define _TEXTGEN_H
#define foo(x) (x + 1)
#define mysum myfunbody 
#include <iostream.h> // for cerr
#include "genfun.h" /* for generating functions */
class TextGenerator {
 public :
 virtual void generate( const char *s ) const { (*sout) << s ; }
 virtual void generate( const char *s, int start, int end ) const 
 {
 for ( int i = start ; i <= end ; ++i )
 (*sout) << s[i] ;
 return a<p->b ? a : 3;
 }
 virtual void generateln( const char *s ) const
	{ 
	 generate( s ) ;
	 (*sout) << endl ; 
	}
 virtual void generateEntire( const char *s ) const
	{
	 startTextGeneration() ;
	 generate(s) ;
	 endTextGeneration() ;
	}
 virtual void startTextGeneration() const {}
 virtual void endTextGeneration() const {}
 virtual void beginText( const char *s ) const
	{
	 startTextGeneration() ;
	 if ( s )
		generate( s ) ;
	}
 virtual void endText( const char *s ) const
	{
	 if ( s )
		generate( s ) ;
	 endTextGeneration() ;
	}
} ;
// Decorator
class TextDecorator : public TextGenerator {
 protected :
 TextGenerator *decorated ;
 
 public :
 TextDecorator( TextGenerator *t ) : decorated( t ) {}
 virtual void startTextGeneration() const 
 { 
	startDecorate() ;
	if ( decorated )
	 decorated->startTextGeneration() ;
 }
 virtual void endTextGeneration() const 
 { 
	if ( decorated )
	 decorated->endTextGeneration() ;
	endDecorate() ;
	mysum;
 }
 // pure virtual functions
 virtual void startDecorate() const = 0 ;
 virtual void endDecorate() const = 0 ;
} ;
#endif // _TEXTGEN_H