Re: [Squeak-VMdev] Re: Squat VM changes for v4 (was "version 4 changes")

[Avi B. <av...@be...>]

On Apr 8, 2004, at 9:16 AM, Ian Piumarta wrote:

> Which reminds me, for V4 the following might be on my wishlist too:
>
> - separate the notion of "self" and "receiver".
>
> For most purposes they remain the same thing.  Within 
> #doesNotUnderstand: (or in some kind of explicit primitive #perform: 
> type thing that allows divergence) they can be made different objects. 
>  Receiver inst vars remain with the "receiver" definition, while sends 
> to self remain with the "self" definition.
>
> This allows (for example) "bullet-proof proxies" where #dNU: sets 
> receiver to the object that fields the send and retains the proxy as 
> "self".  Any subsequent send to self goes straight back to the proxy, 
> rather than the receiver, without affecting how state is accessed 
> within the receiver; i.e., it's completely transparent to the 
> (non-meta ;) programmer.

Yes, please, I'd love to have that.