[gambit-list] Using the JavaScript back-end

[Blake McBride]

Dear Mark,

Thanks for your pointers regarding scheme back-ends for JavaScript.  I
starting using Gambit but ran into a few problems as follows:

1.  The -target compiler option is undocumented.  I think Gambit is more
capabilities than the public is aware of - i.e. JavaScript back-end.

2.  When I compile anything into JS and run it in node I get:

    pc = pc();
         ^
TypeError: undefined is not a function


If I change the definition of gambit_trampoline to:

function gambit_trampoline(pc) {
  while (pc !== false  &&  pc !== undefined) {
    pc = pc();
  }
}

it fixes the problem.

3.  I'd like to print results to the console so I can see what is going
on.  I'd prefer to use (print) or (display) but I can't get (console.log)
to work either.

I even tried:

(define (console.log x)
  ;; Note: the parameter x will be in variable Gambit_r1
  (##inline-host-code "console.log(Gambit_r1);\n")
  #f)

but that didn't work either.

I checked, console.log seems to be a JS standard.  Perhaps your compiler
can convert print and display to console.log.

How can I display something?

Thanks.

Blake McBride
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