[Moose-dev] Petit Puzzle

Hi, I want to ask if there is a elegant solution for the following problem: In my grammar there are references (symbols/names that reference entities somewhere). One is Syntax>>typeReference ^ self failOnReservedWords: ( #uppercase asParser, (#word asParser plus separatedBy: $- asParser) optional ) flatten These typeReferences can be standalone tokens (parsed with a token parse class that parses whitespaces and comments) Syntax>>reference ^ typeReference asn1Token / valueReference asn1Token / ... with PPParser>>asn1Token ^ (ASN1TokenParser on: self) ==> [:node| node value] or embedded in another type Syntax>>valueSetFieldReference ^ $& asParser, typeReference If have two classes, one for the syntax and for the parsing into model objects. Every typeReference should be parsed in the parser class to Parser>>typeReference ^ super typeReference ==> [:node| ASN1ReferenceNode new name: node ] The problem is that it is hard to have the typeReference be tokenized or not and make sure they are all parsed to the ASNReferenceNode. The example above Syntax>>reference ^ typeReference asn1Token / valueReference asn1Token / ... does not work because typeReferences result is transformedd to the model class but the asn1Token applied afterwards gives back a string again. I tried having a second parser typeReferenceToken but that only works if I double the code of typeReference in syntax and parser class. And as I am running short of instance variables I would prefer a solution without having the need for creating new instance variables. Any ideas? I hope I could explain the problem enough to get you the context you need, Norbert