[Pharo-dev] Losing instance variable addition

Stéphane Ducasse stephane.ducasse at inria.fr
Thu Oct 31 11:34:17 EDT 2013


On Oct 30, 2013, at 10:36 PM, Igor Stasenko <siguctua at gmail.com> wrote:

> I don't think there's something to fix.
> You cannot 'extend' classes belonging to other package in any other way
> than adding extension methods.

Exact this was my conclusion too.
> Allowing extension of ivars or any other vars by foreign package
> is road to nowhere.
> 
> I would not like if shape of my kernel classes depends on what packages i load
> or in what order i loaded them. 
> To me it is clear that if one needs to add/remove/modify instance variables
> of some class, those changes should belong to the package containing that class,
> not some random package.

If that would be that simple :)
The case of Gisela is that her tool should extend AST node.

Stef



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