Re: alternatives to java byte-codes

Juan Alberto de Frutos Velasco wrote:
>
> I'm looking for works about alternatives for java byte-codes used by
> java.
>
> More precisely, I'd like to study the advantages of using structures
> like AST (abstract syntax tree).


I'd suggest starting with the work of Michael Franz and Thomas Kistler.


http://www.ics.uci.edu/~franz/ is Franz's homepage, and there you'll
find links to his work on semantic dictionary encoding of asts using a
lzw type algorithm, and subsequent run time code generation from them.


He originally applied these ideas to a Oberon system (he did his Phd
under Wirth).
Check out the slim binary link off his homepage.


With Kistler, Franz is working on a language called Juice that uses this
approach as well.


http://www.ics.uci.edu/~juice/intro.html


To quote:


Juice's distribution format, on the other hand, is far more complex. It
is based on a tree-shaped program representation as is typically used
transiently within optimizing compilers. Rather than containing a linear
code-sequence that can be interpreted byte-by-byte, a Juice-encoded
applet contains a compressed tree that describes the actions of the
original program. The tree preserves the control-flow structure of the
original
program, which makes it much easier to perform code optimization while
the tree is translated into the native instruction set of the target
machine.




Regards,
Niall

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