[antlr-interest] Matching Substring In Lexer

[Kunal Sawlani]

Hi All,
I have been trying to solve a problem which I have been having in the lexer,
but with no luck. My example goes as follows.
I have a simple grammar with two tokens.
I want to treat the the string "$ text" as a token TEXTINPUT and everything
else as a token ANYTHING, which matches anything.
The scanning process works fine when you supply it the string "$ TEXT", the
correct token is returned. And if any other character is supplied, the token
ANYTHING is returned.
However, for the string "$1", the scanner complaints that it was looking for
' ', and no viable alternative for 1. What I want it to return is two tokens
ANYTHING for the "$", and another token ANYTHING for "1". I was reading into
the concept of syntactic
predicates to solve this issue, but I am not quiet getting it right. If
anyone could point me in the right direction, it would be great. Also, I
wanted to know if there are any other approaches to solve this issue. I got
the syntactic predicates concept after reading the following article
http://www.jguru.com/faq/view.jsp?EID=459059

<http://www.jguru.com/faq/view.jsp?EID=459059>Any help would be greatly
appreciated!
Thanks

-- 
Kunal Sawlani