CharInputBuffer.hpp

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#ifndef INC_CharInputBuffer_hpp__
# define INC_CharInputBuffer_hpp__
 
/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.jGuru.com
 * Software rights: http://www.antlr.org/license.html
 *
 * $Id:$
 */
 
# include <antlr/config.hpp>
# include <antlr/InputBuffer.hpp>
 
# ifdef HAS_NOT_CCTYPE_H
#  include <ctype.h>
# else
#  include <cctype>
# endif
 
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif

class CharInputBuffer : public InputBuffer
{
public:
   CharInputBuffer( unsigned char* buf, size_t size, bool owner = false )
   : buffer(buf)
   , ptr(buf)
   , end(buf + size)
   , delete_buffer(owner)
   {
   }

   ~CharInputBuffer( void )
   {
      if( delete_buffer && buffer )
         delete [] buffer;
   }

   virtual inline void reset( void )
   {
      InputBuffer::reset();
      ptr = buffer;
   }
 
   virtual int getChar( void )
   {
      return (ptr < end) ? *ptr++ : EOF;
   }
 
protected:
   unsigned char* buffer;  
   unsigned char* ptr;     
   unsigned char* end;     
   bool delete_buffer;    
};
 
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif
 
#endif