The State of Exceptions

Maloney johnm at
Sun Oct 11 21:12:57 UTC 1998

Stephen Travis Pope <stp at> wrote:
> I was wondering about the state of exception systems for Squeak. Is anyone using
> the VS exceptions code in Squeak 2.2? Is there an ANSI-compatible version under
> development anywhere? The version I wrote a while ago (matching the VisualWorks
> scheme) has pretty much atrophied...

We've got the construct "[...] ifError: [...]", which is being used in the Swiki server
and other places. However, there is no unwind support in the VM.

I suspect that some aspects of VisualWork's exception mechanism could be simulated using
ifError:, but the lack of unwind support might be a problem.

	-- John

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