I've read and reread the documentation on the $stop attributes of
rules, but I can't for the life of me figure out how to use it to get
the last matched node. Here's what I want to do:
impliedQualifiedName returns [Tree idNode]
@after {
$idNode = $stop; // I also tried $impliedQualifiedName.stop
}
: Identifier
| ^( BYFIELD qn=impliedQualifiedName Identifier )
;
But I get the error "attribute is not a token, parameter, or return
value: stop".
Instead I have to do:
impliedQualifiedName returns [Tree idNode]
: Identifier { $idNode = $Identifier; }
| ^( BYFIELD qn=impliedQualifiedName Identifier )
{ $idNode = $Identifier; }
;
What am I doing wrong?
Chris
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