[antlr-interest] Re: a new paper on ANTLR style grammars

[Oliver Zeigermann]

--- In antlr-interest at yahoogroups.com, Pete Forman <pete.forman at w...>
wrote:
> At 2003-11-20 19:53 +0000, lgcraymer wrote:
> >Sorry if I was unclear.  Actions need to execute during a parse only
> >if they affect the parse--you need semantic predicates for that.
> >What you can do is build a list of operations to be executed later.
> 
> How about putting an optional second clause into an action that
> unwinds it?
> 
> That is less automated than the approaches proposed so far but would
> be simpler to implement and for the user to understand.

Sounds very reasonable, but is less fun ;)

Oliver


 

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