I am currently embarking on the utterly futile and mildly recursive task
of implementing a C interpreter in python (Jython specifically).
Right now, I'm trying to think about integer ops.
I want to add two integers, e.g., and have the result be an integer. The
naive way:
foo = bar + baz
Doesn't work because of automatic promotion to bignum.
foo = int(bar + baz)
seems not to work because of OverflowError, and catching it seems to do
little, as the error has already occured. I'm sure there are hacks I
could do, but if I want an implementation that will act the way c int's
(or long's, or some appropriately sized type) do, is there an elegant way
of creating such a function?
Extra points for hit about keeping signed v. unsigned information correct.
Of course, I could always make a hacked-up version, but it seems like this
should be something I can pass-through.
Thanks in advance,
D"newbie"an
