[antlr-interest] Lexical rules calling lexical rules

[mitchellch]

Why does the following generate (MismatchedTokenException(0!=0)) when I
reference either C1ID or C2ID?

 

fragment ID :     ('a'..'z'|'A'..'Z'|'_')('a'..'z'|'A'..'Z'|'_'|'0'..'9')* ;

C1ID        :     ID;

C2ID        :     ID;

 

For now I want C1 and C2 IDs to be generic IDs, but I eventually plan to
evolve them to be more specific.

 

Thanks.

-Mitch

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