pretty-printing?

[David St-Hilaire <sthilaid at iro dot umontreal dot ca>]

Hi all!

I'm completely new to kawa and I have a few questions. I wrote a simple macro
which is:

(define-macro (pp arg)
  `(begin (display ,arg) (newline)))

Now I'm trying to use this macro, because it's annoying to always have to write
the newline after a display... Now if I do something like:

(pp (<java.lang.Math>:sqrt 9.0))

I get the following error after having compiled the file:

Inv.scm:72:5: unbound location <java.lang.Math>:sqrt
        at gnu.mapping.Location.get(Location.java:67)
        at Inv.run(Inv.scm:71)
        at gnu.expr.ModuleBody.run(ModuleBody.java:44)
        at gnu.expr.ModuleBody.run(ModuleBody.java:32)
        at gnu.expr.ModuleBody.runAsMain(ModuleBody.java:124)
        at Inv.main(Inv.scm)

If I do the macro expansion by hand =>

(begin (display (<java.lang.Math>:sqrt 9.0)) (newline))

I get the expected result...!

Why is that?

Thanks!

David

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