On Sat, 2008-11-22 at 20:31 -0600, Su Zhang wrote:
> HI everyone,
>
> the problem is, I want to return a string which includes a regular
> express, like i1=id1'(' i2=id1 ( ',' i3=id1)* ')', on the left of
> equals are label variables which are not included in the return
> string, and I use the method {String k=','+$i3.text;
> $p=$i1.text+'('+$i2.text + k*+')';} to assemble the return value p,
> but it won't work, it says that the * cannot be applied in this kind
> of express, so does everyone know a method to handle this kind of
> problem?
That's because it can't be applied like that ;-). * means zero or more
instances, so you want to put the action for $i3 within the * construct:
returns [String retStr]
... ( ',' i3=id1 { $retStr += $i3.text; } )* ...
Jim
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