[antlr-interest] Force nodes for grammar rules

Matt Benson gudnabrsam at yahoo.com
Mon Dec 5 13:22:59 PST 2005


read the ANTLR Tree Construction portion of the
manual; search for "AST Action Translation".  Is this
what you want?

HTH,
Matt

--- Maik Merten <maikmerten at gmx.net> wrote:

> Hello,
> 
> I know that ANTLR generates abstract syntax trees
> and doesn't include
> nodes for every grammar-rule applied. This is
> discussed in the FAQ (
> http://www.jguru.com/faq/view.jsp?EID=814505 ) and
> this behaviour is a
> Good Thing(tm).
> 
> However, for the project i am involved with it is
> considered extremely
> handy to have the actual parse tree (there may be
> cases where the exact
> sequence of productions gives information about the
> "context" - which we
> could exploit instead of doing more extensive
> analysis).
> 
> I may be cursed with blindness but I am not aware of
> a way to force the
> parse tree into the "AST" tree. Is there any? Can we
> modify the grammar
> in a way that ensures that every rule applied gets a
> node?
> 
> 
> Thank you,
> 
> Maik
> 



		
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