[antlr-interest] VB If elseif end if?

[Anthony Youngman]

The way I've handled it is NOT to have "_ttype = Token.SKIP;" in the
lexer.
 
However, this means I end up with an NL token in the parser that I have
to explicitly handle.
 
I chose that route because I have syntax like "ELSE statements newline"
and
 
"
ELSE
   one or several lines of statements
END
"
 
so the newline is syntactically significant.
 
Oh - a quick tip if you do that - have an EOL token in the parser that
eats multiple NLs, and then the other parser rules just process EOLs.
That way you don't have to worry about blank lines :-)
 
Cheers,
Wol

________________________________

From: ronald.petty at milliman.com [mailto:ronald.petty at milliman.com] 
Sent: 27 April 2004 18:45
To: antlr-interest at yahoogroups.com
Subject: [antlr-interest] VB If elseif end if?




And for newlines in the lexer 

NL 
        : 
        (       ("\r\n") => "\r\n" 
        |       '\r' 
        |       '\n' 
        )+ 
        { newline(); _ttype = Token.SKIP; } 
        ; 


This is because in VB the newline after y means your done.  However I
eat all newlines in the lexer.  What are the possible ways around this? 

Thanks for the pointers. 
Ron 
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