[REBOL] Re: Execute rebol from java
From: arolls:idatam:au at: 9-Jan-2002 13:09
Hi Volker,
> Hi Anton
> darkly remembering a demo which added some demo-syntax to java,
> outputting "clean java".
> done with a tool packed with javacc called jjtree and a
> grammar for java.
It's all far too complicated!! ;)
They seem very useful so I'll have to check them out some more.
> then there is scheme and python both compiling to java-bytecode.
> And Freebell on the FX5 -site. Maybe you can motivate
> Frank Sievertsen & RT to allow it / make it usable?
I just checked out Freebell. It looks very promising. Go Frank.
> > So I am thinking I will make a java class to output a
> > ..java file, then javac it, and run the new class with
> > Class.forName("new.class");.
> > I would prefer to do this in memory somehow, too.
> > And if someone else has done this already, or if javac
> > can help this kind of thing.
I nearly finished a working version yesterday.
It's missing the compile stage, at the moment,
out of the steps: compose, save, compile, run.
The rest works ok. (It won't be hard to do.)
> hum. you need javac internal for speed and ClassLoader
> to allow for multiple classes of the same name
> (like multiple times the same applet loaded).
> if i now could remember where i have that prototype stuff,
> and how to use/configure.. ;-)
These enhancements would really make it look good.
I am interested...
> > This isn't /really/ important... I just won't feel
> > 100% healthy programming in java until I can do composed
> > code like rebol can... :)
>
> Well, then it needs smarter syntax .I prefer the original. *g*
> But if you need to use/learn java, its a funny way.
> specially if the composing can be done with
> Runtime.exec(uting) rebol :)
That's a good idea!
But how to keep it all in one file?
Can a java class know where its source file
is located? Then I could embed the java code in
multi-line comments, which would be better than
the messy way I am currently using (array of
strings - see code link below.)
> > Of course, once I have a class that can execute
> > composed java code (in a clean, simple way), I will be
> > so much more powerful. ;)
>
> Hm, feedback to polish it?
> on or off list? the composing part here? ;-)
Hmm. As long as it has /something/ to do with rebol.
I have to say that my experience composing with rebol
is the main reason why I would try something like this.
Without that experience, I doubt I would have realised
how useful composing can be.
I will keep the code off the list unless it contains
some rebol though.
The code is accessible at the bottom of this page:
http://anton.idatam.com.au/index.html
> -Volker
Anton.
