class Perl::Exp; # from src/Pugs/Internals.hs, `data Exp' # this one doesn't translate so trivially. type Noop; # hmm, there's a lot. And we probably don't need it all for the # meta-model, except perhaps to express sub-types, default values, # etc. enum ExpType «Noop App Syn Cxt Pos Pad Sym Stmts Prim Val Var NonTerm»; has ExpType $.type;