is a simple hygienic macroexpander in and for Carp.
It’s based on this talk by Matthew Flatt and implements the simple nano expander. I intend to keep working on it when motivation strikes.
(load "expand.carp")
(defdynamic prog
(Expand.introduce ; adds all the core primitives
(Expand.from-datum ; builds a syntax object
'(let-syntax [add (fn [s] (quote-syntax '(+ 1 3)))]
(add)))))
; expands the syntax object and converts it back to
; regular Carp
(Expand.to-datum (Expand.expand-all prog))
; => '(+ 1 3)Have fun!