On Tue, Dec 23, 2008 at 12:23, Armin Rigo <[email protected]> wrote: > Hi Hakan, > > On Mon, Dec 15, 2008 at 08:47:26PM +0100, Hakan Ardo wrote: >> cannot yet handle that the methods return NotImplemented. Would it be >> possible to handle that in a similar manner to how None is handled? > > Not easily. The annotation framework of PyPy was never meant to handle > the full Python language, but only a subset reasonable for writing > interpreters. Anyway, None-or-integer is not supported either, simply > because there is no way to represent that in a single machine word.
There are at least two ways, once you have a singleton (maybe static) None object around: - box all integers and use only pointers - the slow one; - tagged integers/pointers that you already use elsewhere. So integers of up to 31/63 bits get represented directly, while the other ones are through pointers. -- Paolo Giarrusso _______________________________________________ [email protected] http://codespeak.net/mailman/listinfo/pypy-dev
