Re: address "from"

[Pietro Terna]

        Many thanks, a good perspective ...

        Pietro 

At 17.55 01/01/99 -0800, you wrote:
>>>>>> "ST" == Sven N Thommesen <address@hidden> writes:
>
>ST> I have suggested to the swarm team and to Scott Christley that they
>ST> change objectiveC to make the caller automagically available (the
>ST> same way that 'self' is)
>
>The calling convention for GNU C's implementation of Objective C is to
>pass the target object and selector followed by the method arguments.
>If the runtime was changed to pass the caller as well (in the
>Objective C runtime distributed with the compiler), new code could not
>be linked with old.  However, I understand that having To/From
>information as instance variables is intuitively satisfying in an
>agent-based sorta way.
>
>We have thrown around the idea of extending GCC's Objective C compiler
>and runtime to pack arguments and caller/callee (etc) metadata in to
>the form of a C struct.  This would be useful for object distribution 
>and multilanguage integration, and would also enable the kind of 
>extensions you two are advocating.
>
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