[antlr-interest] building ASTs for recursive lists

[Maassen, H.A.M.]

" Unfortunately, I can't seem to change logicalExpression to what I'd
like:

logicalExpression
  : relationalExpression
    ( logicalOperator^ relationalExpression )*
  ;

To build a proper tree.  Why can't I? Or even better? How can I? "

 
Here's how I did my expressions:

logicalExpression:!
  e1:relationalExpression  (o:logicalOperator e2:logicalExpression)?
  { #logicalExpression = #(#o, #e1, #e2); }
;
 
Getting my grammar to build decent trees has uglied it up quite a bit :(
 
Regards, Harald Maassen


 
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