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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: CharInputBuffer.hpp,v 1.1 2004/10/08 16:27:34 dfisher Exp $
 */

# 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

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