[antlr-interest] DFA's encoded directly in java bytecodes
Terence Parr
parrt at cs.usfca.edu
Tue Oct 19 13:31:45 PDT 2004
On Oct 19, 2004, at 1:14 PM, matthew ford wrote:
>
> What about debugging.
> You always claimed Antlr's code was readable.
> This is worse the XML :-(
Ah. Sorry to be unclear. I still generate pure java source for the
parsers and lexers, but the prediction decisions that require cyclic
DFAs (the new LL(*) stuff) are generated in byte codes. Believe me,
you can't read the java source for DFAs either. Only a graphviz
diagram shows you what the DFA looks like, which I generate for you
automatically. Much better than code and is language independent. :)
Have no fear, you won't even notice the DFAs...
Make sense?
Ter
--
CS Professor & Grad Director, University of San Francisco
Creator, ANTLR Parser Generator, http://www.antlr.org
Cofounder, http://www.jguru.com
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