[antlr-interest] Token rewrite

[xkrebstarx]

Also,

I have two productions, such as this

a          :   ( (x -> ^(IMG_NODE x))
                | (y -> ^(IMG_NODE y))
                | (z -> ^(IMG_NODE z))
                )
           ;

b         :    a? c
           ;


Where I want the rewrite for b to have c as the subtree root if a is not
there and a to be the subtree root if it is there. But, I would like to have
these as one production such as this...

a          :   ( (x -> ^(IMG_NODE x))
                | (y -> ^(IMG_NODE y))
                | (z -> ^(IMG_NODE z))
                ) c -> ^($a? c)
           ;



Can this be done?

thanx again,
xkrebstarx
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