2017-10-04 14:34 GMT+02:00 Henrik Sperre Johansen < henrik.s.johan...@veloxit.no>:
> Denis Kudriashov wrote > >> Would it? > >> With pure method tags, you'd do something like: > >> SomeClass >> #renamePackage: aPackage > >> > > <command: 'Rename package' > >> > > category: 'Package' > >> order: 25 > >> shortcut: #($r meta)> > >> ... method renaming package here ... > > > > Then have different pragma traversers capable of creating the actual > menus > > / > >> commands invoking such methods. > >> > > > > So instead of simple subclassing of ClassAnnotation you would suggest me > > to > > implement pragma traversal/interpreter? > > I would prefer first. It gives me for free the object with any structure > > without any tricky literal interpretation logic. > > For me annotation is just obviously simpler solution. > > A traverser doesn't have to be a lot of work; > http://forum.world.st/Having-comments-for-pragma-tp4902987p4903058.html > > Denis Kudriashov wrote > > Also try to think how to support blocks in parameters with pragma > > approach. > > And how fun would be to debug them. > > It is for the question about > > "restricted anyway". > > You wouldn't need them. What to do with the tag, is up to the traverser. > For instance, #perform'ing one of the literal args on the domain class > traverser creates, returning an appropriate block, if strictly necessary. > Which means restriction to me because I could not simply use a block in the place of pragma. > > Denis Kudriashov wrote > > Really, with annotations you have normal smalltalk > > code for annotating classes. No magic. And implementation is really > > simple. > > Same with a traverser; the normal smalltalk code to create your domain > objects is simply in a different place; the traverser part of the package > defining said domain, rather than as an extension method marked with a tag. > But example with #($r meta) shows that it is not normal smalltalk code. I could not put halt here (I expect that halt will work, but it will debug interpreter code instead of expression). Also extension methods here is a very important feature and not just a mechanism. Because it provides the way how to annotate existing classes from external packages. It is pretty cool feature which not exists in java or C#. > I guess it's best to just agree to disagree, and since you're the one > implementing... ;) > Ok, Henrik. But last note: Pragma is low level annotation mechanism and actually more than annotation which was discussed many times in past. But with this library I tried to generalise the way how we use pragmas to annotate classes. Of course you can use pragmas to implement my examples. But I argue that it will require more complex code. Best regards, Denis Looking forward to trying it out! > > Cheers, > Henry > > > > -- > Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html > >
