On Tue, 8 Mar 2011, Paul DeBruicker wrote:
Hi -
Chronos (http://www.chronos-st.org & http://www.squeaksource.com/Chronos )
would load into and work in Squeak 3.9, but it won't load into 4.2. The error
given is 'Futures must be sent messages' I think this comes up because
Chronos has a class InfiniteTimepoint that has two class side methods:
InfiniteTimepoint class >> polarity: polarity
^polarity ifTrue: [self future] ifFalse: [self past]
and
InfiniteTimepoint class >> future
Future == nil
ifTrue:
[Future :=
(self basicNew)
bePositive;
beImmutable].
^Future
For some reason when polarity: is compiled it is using Object>>future rather
than the version of future that is defined by InfiniteTimepoint.
Is there any way to change the load/compile order of those two methods when
loading into 4.2? I know I could rename the InfiniteTimepoint version of
future to something else but its a package that works as is on VisualWorks,
Dolphin, Pharo, and Gemstone. So I'd either maintain a separate version for
squeak or have to get the package maintainer to make a change for all
platforms and users.
I'm using linux and the all-in-one app from squeak.org
Thanks for any guidance you can provide.
#future and #future: sends are inlined by the compiler. Currently there's
no way to turn this off, but it can be easily implemented. IIRC Croquet
needs these methods to be inlined.
Levente
Paul
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