[antlr-interest] Re: Syntatic predicates...

[Ric Klaren]

Hi,

On Tue, May 18, 2004 at 10:06:48PM -0000, izniegoed wrote:
> (gah deleted the mail from my default mailer so praying the html
> interface won't blow up in my face :/ )
> 
> --- In antlr-interest at yahoogroups.com, Tom Verbeure <hombre at g...> wrote:
> > To put things in context: I am trying to convert the parts of the bnf
> > description of the VHDL language into ANTLR. The BNF is full of
> > ambiguities. I've used a bunch of existing ANTLR and non-ANTLR
> > grammars for VHDL and ADA as a guide, but still like to redo parts
> > myself just to get a full grasp of how to build a decent parser *and*
> > to learn features of the language. (Writing a parser force me to
> > explore language constructs that, before, I never considered to be
> > sematically correct, even after reading the official language
> > specification.)
> 
> Are you familiar with the CCTB based VHDL parser/lexer/frontend listed
> here:
> 
> http://www.vhdl.org/vi/comp.lang.vhdl/FAQ3.html
> 
> Which refers to a ftp here:
> 
> ftp://ftp.cs.utwente.nl/pub/src/VHDL/
> 
> CCTB or cocktail is a LL(1) parser tool with so the grammar might be
> interesting to look at.. (although the treeparser/transformer parts
> might not translate well to antlr)
> 
> CCTB's syntax is not that far away from antlr's.

I suddenly recall that it might be using the lalr parser of the toolbox and
not the ll(1) parser.. so this might not be interesting to look at .. :/

Cheers,

Ric
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    ---- Ric Klaren ----- j.klaren at utwente.nl ----- +31 53 4893755  ----
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