[antlr-interest] Re: Taking control of the input stream

[Ric Klaren]

On Wed, Sep 18, 2002 at 08:51:32PM -0000, weitzman_d wrote:
> LITERAL	:	"{" num:NUMBER "}" CRLF
> 	{
> 	  int length = Integer.parseInt(num.getText());
> 	  InputBuffer buf = getInputBuffer();
> 	  buf.mark();
> 	  buf.fill(length);
> 	  for (int i = 0; i < length; i++) {
> 	    buf.consume();
> 	  }
> 	  String value = buf.getLAChars().substring(0, length);
> 	  buf.commit();
> 	  System.out.println("Matched literal [" + value + "]");
> 	  setText(value);
> 	}
> 	;

I guess that will work. You btw can ommit the mark and commit. Another
option is maybe using a closure rule with a predicate to break out of it (I
think you need a prerelease antlr to do this)

Cheers,

Ric
-- 
-----+++++*****************************************************+++++++++-------
    ---- Ric Klaren ----- klaren at cs.utwente.nl ----- +31 53 4893722  ----
-----+++++*****************************************************+++++++++-------
     "Evil will always triumph, because Good is dumb." ---  Spaceballs


 

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