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How do I find the RPackageTag of a class?

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Tim Mackinnon

How do I find the RPackageTag of a class?

I’m trying to understand how RPackage and RPackageTag work in Pharo7? It seems different than Pharo6 at least with Nautilus (vs Calypso) - as previously the Nautilus UI gave me the RPacakgeTag, and I could just work with that. Calypso doesn’t seem to give me the tag object, but if I have a known class and I want to know its RPackageTag I can’t see how you do it? It all seems rather messy….

I can ask a class for its category - which just gives me a symbol of the form “mypackage-tagname”, and if I ask a class for its package, it will give me an RPackage(myPackage) - but that RPackage has a set of RPackageTags which just use the tagname (so not prefixed with "mypackage-“)? So am I really supposed to split the category name on “-“ myself, and then select the correct RPackageTag?

If I look at the RPackageTag tests - they all seem to use hard coded values and so don’t really show you how you deal with the question above?

It really seems quite messy?

I naively thought that if I wanted a browser extension to deal with a selected package tag - and file out some classes in that tag (for exercism) - I could easily get the RPackageTag from any class and then use it?

Tim

Tim Mackinnon

Re: How do I find the RPackageTag of a class?

Actually - I’ve realised that Calypso can give me the tag name from its context - (aToolContext lastSelectedClassGroup).

However it does highlight a very strange package/tag design. Are you not supposed to be easily able to derive RPacakgeTags?

Tim

> On 14 Feb 2019, at 13:19, Tim Mackinnon <[hidden email]> wrote:
>
> I’m trying to understand how RPackage and RPackageTag work in Pharo7? It seems different than Pharo6 at least with Nautilus (vs Calypso) - as previously the Nautilus UI gave me the RPacakgeTag, and I could just work with that. Calypso doesn’t seem to give me the tag object, but if I have a known class and I want to know its RPackageTag I can’t see how you do it? It all seems rather messy….
>
> I can ask a class for its category - which just gives me a symbol of the form “mypackage-tagname”, and if I ask a class for its package, it will give me an RPackage(myPackage) - but that RPackage has a set of RPackageTags which just use the tagname (so not prefixed with "mypackage-“)? So am I really supposed to split the category name on “-“ myself, and then select the correct RPackageTag?
>
> If I look at the RPackageTag tests - they all seem to use hard coded values and so don’t really show you how you deal with the question above?
>
> It really seems quite messy?
>
> I naively thought that if I wanted a browser extension to deal with a selected package tag - and file out some classes in that tag (for exercism) - I could easily get the RPackageTag from any class and then use it?
>
> Tim

Denis Kudriashov

Re: How do I find the RPackageTag of a class?

Hi Tim.

aPackage classTagForClass: aClass

Calypso shows more kind of children than just a package tags. And it can be extended. That's the reason why you don't have raw packageTag there.

Also in Pharo 6 new API was introduced to handle tags of classes and methods in similar way https://pharo.manuscript.com/f/cases/19341/New-class-and-method-tags-API.

чт, 14 февр. 2019 г. в 13:40, Tim Mackinnon <[hidden email]>:

Actually - I’ve realised that Calypso can give me the tag name from its context - (aToolContext lastSelectedClassGroup).

However it does highlight a very strange package/tag design. Are you not supposed to be easily able to derive RPacakgeTags?

Tim

> On 14 Feb 2019, at 13:19, Tim Mackinnon <[hidden email]> wrote:
>
> I’m trying to understand how RPackage and RPackageTag work in Pharo7? It seems different than Pharo6 at least with Nautilus (vs Calypso) - as previously the Nautilus UI gave me the RPacakgeTag, and I could just work with that. Calypso doesn’t seem to give me the tag object, but if I have a known class and I want to know its RPackageTag I can’t see how you do it? It all seems rather messy….
>
> I can ask a class for its category - which just gives me a symbol of the form “mypackage-tagname”, and if I ask a class for its package, it will give me an RPackage(myPackage) - but that RPackage has a set of RPackageTags which just use the tagname (so not prefixed with "mypackage-“)? So am I really supposed to split the category name on “-“ myself, and then select the correct RPackageTag?
>
> If I look at the RPackageTag tests - they all seem to use hard coded values and so don’t really show you how you deal with the question above?
>
> It really seems quite messy?
>
> I naively thought that if I wanted a browser extension to deal with a selected package tag - and file out some classes in that tag (for exercism) - I could easily get the RPackageTag from any class and then use it?
>
> Tim