[gambit-list] Gambit JS backend

Alexander Shendi Alexander.Shendi at web.de
Tue Sep 24 10:03:36 EDT 2013

Dear List,

I am trying to use the Gambit-Scheme JS-backend. I am using the 4.7.0 release. I compiled the following
program (obtained from this list) with:
   gsc -c -target js fib.scm
;; ===================== fib.scm ===============================

(declare (standard-bindings)
          (not safe)

(define (fib n)
   (define (fib n)
      (if (< n 2)
          (+ (fib (- n 1))
             (fib (- n 2)))))
   (fib n))

(println (fib 30))

;; EOF

I tried to run it:

node fib.js

ReferenceError: print is not defined
     at Gambit_println (/home/alexshendi/sources/gambit/fib.js:42:3)
     at Object.Gambit_bb1_println [as println] (/home/alexshendi/sources/gambit/fib.js:66:3)
     at Gambit_bb4__20_fib (/home/alexshendi/sources/gambit/fib.js:119:31)
     at Gambit_bb3__20_fib (/home/alexshendi/sources/gambit/fib.js:104:12)
     at Gambit_trampoline (/home/alexshendi/sources/gambit/fib.js:21:10)
     at Object.<anonymous> (/home/alexshendi/sources/gambit/fib.js:252:1)
     at Module._compile (module.js:456:26)
     at Object.Module._extensions..js (module.js:474:10)
     at Module.load (module.js:356:32)
     at Function.Module._load (module.js:312:12)

Now I have the following questions:

* Apparently the generated code is for another JS implementation (Spidermonkey?)?
* How do I access e.g. console.log() from scheme?
* I tried to use the standard Scheme functions "display" and "newline"
   from fib.scm, but that didn't work. How do I use them?
* Where do I find more info on the JS backend?

Many thanks in advance for your help.

Best Regrads,


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