[antlr-interest] writing a simple tool

[Johannes Luber]

Edwards, Waverly schrieb:
> I am currently attempting to write what I hope is a simple tool to
> validate an ebnf grammar and export the first and follow set.
> Unfortunately, no amount of reading has enabled perform the 'easy' (to
> others) task of generating this first and follow set.  I have read
> multiple books and texts on the subject.  So I've embarked on a mission
> to start by first validating an ebnf grammar and moving forward from
> there.
> 
> My first stumbling block came early in writing an ebnf grammar.  In my
> effort to separate my parser rules so I can apply some type of action I
> have created recursive definitions.  I know what they are but I've been
> unable figure out how to dig myself out of this hole.
> 
> Any and all help will be greatly appreciated.

I also happen to have an unpublished tutorial about the very kind of 
problem you have (before anyone asks - no, I don't have any more lurking 
on the harddrive ;). I've attached it to this email. I'd also appreciate 
any of feedback here.

Johannes
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