[antlr-interest] Rewrite separators to root nodes.

[Gavin Lambert]

At 04:01 5/08/2008, Craig Main wrote:
 >I did originally have it like this.
 >I ended up struggling to get the template output to work.
 >My templates are not also recursing so it get's tricky.
 >
 >rules
 >   : ^('or' a=rules b=rules) ->
 >ORTEMPLATE(a.returnvalue,b.returnvalue)
 >   | ^('and' a=rules b=rules) ->
 >ANDTEMPLATE(a.returnvalue,b.returnvalue)
 >   | r=rule -> RULETEMPLATE(r.returnvalue)
 >   ;

This is just a wild stab in the dark (because I've never actually 
used StringTemplate myself), but try this instead:

rules
    : ^('or' a=rules b=rules)
      -> ORTEMPLATE(a.st,b.st)
    | ^('and' a=rules b=rules)
      -> ANDTEMPLATE(a.st,b.st)
    | r=rule -> RULETEMPLATE(r.returnvalue)
    ;

If that doesn't work, then maybe someone else will be able to help 
you more :)