[antlr-interest] Newbie conundrums

cgorski at cgorski.org cgorski at cgorski.org
Wed Aug 22 14:34:12 PDT 2007


On Wed, 22 Aug 2007 21:22:43 +0200
  "Jan-Willem van den Broek" <monstermanual at gmail.com> 
wrote:
> But what would I do if I wanted those three individual 
>values at a
> higher level? Now they're just a single token. As a 
>workaround I tried
> putting them in return values, but that doesn't seem to 
>be supported
> in the lexer...
> 
> JW

Everything that you can do in the parser, you can do in 
the lexer.  What I would do is use return values and place 
them in some sort of data structure.  If isn't working for 
you, it's you, not ANTLR.

Look here:

http://www.cs.bris.ac.uk/Teaching/Resources/General/antlr/doc/lexer.html

and search for "A Surprising Use" on the page.  It has an 
example of the lexer returning values.  Keep in mind that 
the example uses an older version of ANTLR, but the 
general idea is the same.

-Chris



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