On Tue 13 Dec 2011 18:28, Mark H Weaver <m...@netris.org> writes:
> >> (let ((xxx 2))
> >> #{ #(set! xxx (1+ xxx)) #})
> In the general case, Lilypond needs to _execute_ the outer Scheme code
> before the parser/evaluator is able to even _see_ the inner Scheme code,
> because it needs to parse/evaluate the Lily code in between the two, and
> we've already established that parsing cannot be not be done without
> runtime information.
What does it mean to execute a `(let ((xxx 2))' ? I think I need to
read the thread again, because I am really not getting it.
> (let ((xxx 2))
> (capture-lexical-environment))
>
> How difficult would it be to implement this?
Dunno. I was thinking that we could have a special form to return a
list of the identifiers in scope. Or perhaps, some syntax-bindings
procedure, to operate on syntax objects. A macro could use that data to
make a closure that captures all of the bindings, if that's your thing.
Andy
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