[asdf-devel] Pushed version 184.108.40.206 -- first version with checks for OPERATION subclasses -- please test!
fare at tunes.org
Wed Jan 22 19:06:31 UTC 2014
On Wed, Jan 22, 2014 at 12:40 PM, Anton Vodonosov <avodonosov at yandex.ru> wrote:
> I don't think that preserving OPERATION semantics is really ruled out.
> Lets consider it a little bit more?
> Is it true that old ASDF:OPERATION is semantically equivalent to the new
> DOWNWARD-OPERATION? If yes, the proposal I made earlier looks appropriate:
> OPERATION inherit from DOWNWARD-OPERATION
> COMPILE-OP inherit from OPERATION
> LOAD-OP inherit from OPERATION
> LOAD-SOURCE-OP inherit from OPERATION
> If we make so, these operations are backward compatible
> and at the same time fit the new ASDF 3 design.
It's not backward compatible with systems that define methods on operation,
and expect the method to be always calls for all operations.
I admit I haven't kept track of how many of them there were while
a few, still, that will have to be updated — making the exercise self-defeating
as a way to detect old code.
—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org
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Both are equally terrifying. — Arthur C. Clarke
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