Clojurians Log v2

To the best of my understanding, I think that should be possible. At least, I don't know of any reason why it's not possible. A specific example would help :) Here's the sci README on macros: https://github.com/babashka/sci#macros

Yeah, I was reading through this and I can see macros are supported, but I haven't been able to tell if there's any way to get the non-evaluated macroexpanded expression.

Which is a value I need

I don't see anything about macroexpanding in the api markdown file either

Is there any reason you can't submit the form as (clojure.walk/macroexpand-all (quote ~form)) to get what you need?

or even:

{:expanded (clojure.walk/macroexpand-all (quote ~form))
  :result ~form}

So you mean like read in the expression, wrap it in a macroexpand all, quote it, and then eval that?

yea

I guess I could potentially do that.

is that macroexpand all provided by sci?

I don't think I can provide it in cljs

I tried it in bb

I think this would need nbb

I'm not sure if that means it also applies to sci in cljs

I'll give it a shot a little later

I don't have nbb handy, but should be easy to test

Yeah, I'll test it out. If that works, then I think I can use sci as-is. If not, then I might need to look at the inner workings and think about a PR to add a macroexpand to the API.

(require '[sci.core :as sci])

(let [ctx (sci/init {})]
  (sci/eval-form ctx '(do (defmacro lol [y] y)
                          (def x 123)
                          {:x-stuff (* x (lol x))
                           :macro-stuff (macroexpand (quote (lol :abc)))})))
;; => {:x-stuff 15129, :macro-stuff :abc}

yea

macroexpand is available inside SCI already

Yeah, it's available from inside, my question was about doing macroexpand instead of eval-form

Which yeah, looks like can be done by just wrapping macroexpand and quote before evaling

yeah, that's how I'd do it

> I don't have nbb handy npx nbb is all you need :)

(defn macroexpand-in-sci [code]
  (let [ctx (sci/init {})]
    (sci/eval-form ctx
                   `(macroexpand (quote ~code)))))

(macroexpand-in-sci '(when true
                       :abc))
;; => (if true (do :abc))

My issue here is I'm basically writing a bunch of tiny separate sci expressions which need to be able to refer to stuff that's provided outside of the sci context by way of this prop special function but I have to be able to find usages of prop outside the context of sci

although putting some more thought into that I might even need to mess with that a little more because of the potential for constructing symbols at runtime to pass to prop

I'm still not grasping exactly what you're hoping to achieve :)

you could also do a walk on the code before you feed it into sci

That's what I'd initially thought to do but I need to macroexpand first

This is just one tiny part of a very complex whole that I'm trying to work out a spec for and determine exactly what components need what features. ATM it's looking like sci can do what I need from an interpreter though.

ok, so you do first a macroexpand inside SCI, then walk that expression and then eval that expression in SCI :)

yup, that's the conclusion we came to! Glad that's confirmed to work. 🙂