Reflectivity: Links that de-install themselves (oneShot)

Hi,

This is just a one-liner to add to the framework, but that makes it even more fun: One-Shot links.

A link now can have the #optionOneShot, which means that it will de-install itself when activated for
the first time:

link := MetaLink new
                metaObject: self;
                options: #(optionOneShot);
                selector: #tagExec.

The full test looks like this:

testLinkOneShot
        | sendNode link |
        sendNode := (ReflectivityExamples>>#exampleMethod) sendNodes first.
        link := MetaLink new
                metaObject: self;
                options: #(optionOneShot);
                selector: #tagExec.
        sendNode link: link.
        self assert: sendNode hasMetalink.
        self assert: tag isNil.
        self assert: (ReflectivityExamples new exampleMethod = 5).
        self assert: (tag = #yes).
        self deny: sendNode hasMetalink.
        tag := nil.
        self assert: (ReflectivityExamples new exampleMethod = 5).
        self assert: tag isNil.


https://pharo.fogbugz.com/f/cases/16581/one-shot-links

Marcus

Marcus I have a API design question

when you offer

options: #(optionOneShot);

versus

optionOneShot

Do you do a perform of the arrays selectors?
What is the benefit of options:
STef


Le 16/9/15 08:52, Marcus Denker a écrit :

I needed a mechanism for flags (stored not each in an ivar, as they normally
not active). As we have this mechanism in Opal already, I decided to use the
same pattern.
As in Opal, for all the pre-defined options we should not rely on perform: but
have explicit #optionOneShot getter/setter methods. I will add those later..

        Marcus

Tx this is I think a good idea (adding the setter)

Le 20/9/15 14:17, Marcus Denker a écrit :