Hello Samuele,

C# is very similar to Java and supports 'goto'.
Could this be an option?

G�nter

Samuele Pedroni schrieb:
Armin Rigo wrote:

* genjava.py could be another option. It has a simpler type system, which
matches ours quite well, but genjava doesn't exist yet at all (the one in the
java/ subdirectory had a different goal in mind). We get memory management
for free. If we add the requirement to compile with GCJ it could be easy to
make a CPython extension module too, with the same problems and solutions
about SomeObject as above.




We would get gc, thread support, a runtime and useful libraries (unicode, big integers ...), and an object model for free. How much of that and with what stability if we go through gcj is a bit open, although for the target of self-hosting that would be the interesting route. Java has no gotos wich means that at some point we would have to generate bytecode wich is not too
hard but sometimes making the java verifier happy is harder than it could seem. The type system should match but there are no pointer to functions or delegates wich means some more involved solution to emulate them. We could probably reuse some things or ideas that are in Jython.


Whether the things we would get for free and the type system and basic object model are really a good match for the code we can easily generate is also a open question.

So it probably makes sense as a platform to try long term, and surely when we have made even more progress in annotating our codebase. Also because reusing java or jython stuff instead of trying to interface with CPython is probably easier because of ref-counting vs gc issues.

But is worth keeping it in mind as a reserve route, because its trade-offs come together with quite a bit of high level functionality already there.

But I agree that genc especially with an approach involving incrementally rewriting the graphs is the most natural route right now.

Samuele.
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