🚀 go-pugleaf

For a very simple syntax (definition of Scope in CMIP):

Scope ::= CHOICE {
        INTEGER {
                base (0),
                first (1),
                depth (2)
        },
        oneLevel [1] IMPLICIT INTEGER,
        manyLevels [2] IMPLICIT INTEGER
}

pepy -A generates build routine with is essentially a no operation.

Addition of 

PREFIXES encode decode print
and 
ENCODER encode / DECODER decode directives produces encode and decode routines,
but encode is a noop again, and decode just checks correctness of asn.1, but 
produces no actual data structures.

How do I get meaningful encode/decode routines?

On a related note, were can I get more info on pepy extensions (I know,
there is some in the ISODE manual; I would like more).

I use ISODE 7.0.
 Mike.