[antlr-interest] Rewriting to Flat Tree Nodes for Associative Multiary Operators
Gavin Lambert
antlr at mirality.co.nz
Fri Oct 3 03:02:02 PDT 2008
At 11:04 3/10/2008, Randall R Schulz wrote:
>op790FormulaFlat
> : (op780FormulaFlat -> op780FormulaFlat)
> (
> ( Or rDisjuncts = op790FormulaFlat) + )
> -> ^(Or $op790FormulaFlat $rDisjuncts+)
> ) ?
> ;
That's a completely different form from what Jim suggested (for
starters, it uses recursion within an iterative loop, which can
cause complications).
Try this instead:
op790FormulaFlat
: (a=op780FormulaFlat -> op780FormulaFlat)
( (Or b+=op780FormulaFlat)+ -> ^(Or $a $b+) )?
;
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