Alex Martelli wrote:
Daniel Timothy Bentley wrote:

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.

so you code

foo = makeint(bar + baz)

with some makeint function such as the above one.
I had a similar problem for the PyPy project. In order
to overcome the problem of always having to call
conversion functions, I wrote a class that tries
to promote its restricted type through expressions.

So if you start a variable by

x = r_int(42)

and perform any integer operations on it, the result
will stay in the same domain.

Feel free to use the attached code as you like.

ciao - chris

Christian Tismer :^) <mailto:tismer at tismer.com>
Mission Impossible 5oftware : Have a break! Take a ride on Python's
Johannes-Niemeyer-Weg 9a : *Starship* http://starship.python.net/
14109 Berlin : PGP key -> http://wwwkeys.pgp.net/
work +49 30 89 09 53 34 home +49 30 802 86 56 pager +49 173 24 18 776
PGP 0x57F3BF04 9064 F4E1 D754 C2FF 1619 305B C09C 5A3B 57F3 BF04
whom do you want to sponsor today? http://www.stackless.com/
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: restricted_int.py
Url: http://mail.python.org/pipermail/python-list/attachments/20030325/ae01eb2c/attachment.asc

Search Discussions

Discussion Posts


Follow ups

Related Discussions



site design / logo © 2022 Grokbase