[antlr-interest] v3: Example of using tokens and $type?

Mark Mandel mark.mandel at gmail.com
Thu Mar 1 22:29:07 PST 2007

Hey all,

I've got a situation in my grammar in which I want to be able to change the
type of the Node depending on certain parser conditions.

I had thought it was going to be as simple as defining a token within a
tokens{} block, and then writing a small piece of { $type=mynewToken } and I
would be okay, but it looks like my assumptions were poorly based on fact.

Is there anywhere I can look that gives a clear explanation / example of how
to correctly use tokens and the usage of $type.  I want to make sure I'm not
barking up the wrong tree here.

(I'm going to get the strange feeling that I'm going to get a repsonse of
'grab a copy of the book')

Thanks in Advance,


E: mark.mandel at gmail.com
W: www.compoundtheory.com
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