[antlr-interest] Defining keywords with varying length

[Martin Probst]

Well, you can have a rule:

tokens {
  LIBRARY,
  FOO,
  BAR
}

KEYWORD {
  
}:
  ('a'..'z'|'A'..'Z')+
  { $setType(myKeywords.lookup($getText())); 
    /* LIBRARY for "LIB", "LIBR" etc., FOO for "foo", ... */ }

And then you'd have to maintain a structure myKeywords which maps from
word-start to token types. You'd probably want to use a TRIE for that.

Martin