[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
time of evaluation
Date: Wed, 15 Jan 86 09:11 EST
From: Bernard S. Greenberg <BSG at SCRC-STONY-BROOK.ARPA>
To: Soley at MIT-MC.ARPA, LOOSEMORE at UTAH-20.ARPA,
common-lisp at SU-AI.ARPA
Re: time of evaluation
Date: Tue, 14 Jan 86 15:17 EST
Date: Mon 13 Jan 86 18:08:50-MST
From: SANDRA <LOOSEMORE@UTAH-20.ARPA>
Subject: time of evaluation
Should types defined via deftype and defstruct be entered into the type
structure at compile time as well as load/eval time?
This is completely unclear. Consider an incompatible change
to a defstruct used by the compiler. Consider that one of
the accessor functions is passed as a funarg by the compiler.
Doing this would break the compiler. It has to do something
a lot more subtle, that limits its effects to functions being
compiled in the same file.
I had this exact problem with the GCLisp compiler, as a matter of fact.
HOWEVER, I think the language should be designed more for the user
than the compiler writer, who we assume has more smarts.