I have not really followed this discussion, but here is a tip:
http://bnfc.digitalgrammars.com/
It seams to support the following languages:
Haskell, Ocaml, Java, C, C++,
Transforming code from a functional language to Scheme seams easier than
transforming from a non-functional language.
I do not know if it does what you need though.
On 2 January 2013 09:33, David A. Wheeler <dwhee...@dwheeler.com> wrote:
> Alan Manuel Gloria:
> > It should be trivial to create a Scheme interpreter in Java.
> > Actually, you don't even need a scheme interpreter: you just need a
> > set of classes to represent common Scheme types, and a virtual member
> > function on the base class to print out an s-expression. That way we
> > can use its output directly into a Scheme script that executes the
> > Java code on the t-expr input, slurps its s-expr output, and compares
> > it to the reference s-expr.
>
> I've done something like that in Java, and it's working! I've created
> output/scheme/Pair.java; a Pair represents a Scheme Pair, and it has static
> Scheme-like routines like cons, list, append, nullp (for "null?"), pairp,
> and so on. It's not a full Scheme, but it's enough so that action rules
> have a trivial mapping to Scheme (they basically use Scheme procedure
> names, with Java syntax). Scheme's () is represented as Java null, Scheme
> atoms are represented as Java strings, and rule results are "$RULENAME.v".
> Data is represented as Java type "Object" (which is the root of the Java
> class hierarchy).
>
> Here's an example, it looks pretty clear to me:
>
> body returns [Object v] :
> i_expr (same body1=body {$v = cons($i_expr.v, $body1.v);}
> | dedent {$v = list($i_expr.v);} ) ;
>
> Thoughts?
>
> I think this is better done in Java than in C++. For one thing, Java has
> automatic garbage collection, and C++ doesn't, which makes Java a better
> match to the problem.
>
> --- David A. Wheeler
>
>
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