Hi,
Tonight I started working on the association between classes and
namespaces as specified in PDD15. Have some questions.
1) I added a "slot" to the NameSpace PMC to hold a Class or Role PMC a
while back. However, there is no interface specified for storing/getting
at this slot. For now I've added "set_class" and "get_class" METHODs to
the NameSpace PMC. What should these actually be called (if something
else)? Whatever is decided on should be added to a PDD somewhere - I
guess the NameSpce PDD.
2) I see that we now just have a .name method and no .namespace method.
For Class, the description of the name method says:
"The accessor for the name attribute. With no argument, it simply
returns the current value for name. When passed an argument, it sets the
name of the class, and also sets the association with a namespace. With
no argument it only returns the current value of the name attribute."
That is a little unclear to me. What should the name slot be set to -
the name of the most nested bit of the namespace (e.g. for [ "Animal" ;
"Monkey" ], name is "Monkey")?
Also, what should it return? Just the name attribute? What if you really
want to get at the namespace?
Finally, note that Role says something different - I guess these should
be consistent?
3) For Role (but not Class - mistake?), it says:
"When you associate a class with a namespace, it pulls in all of the
methods and vtable methods held within that namespace."
At the moment, we do not carry the ":method" adverb on subs through to
the PBC. Thus while I guess you can iterate a namespace (not tried it
yet, just assuming you can since it's derived from Hash) and test for
PMCs to make sure they are Subs. However, beyond that you have no way of
knowing if it's a method or not (so far as I can see, I'd love to be
corrected on this if anyone knows otherwise). Should :method be carried
through to a PBC level?
4) After this it says:
"And when replacing one class with another in the association, it
removes any methods and vtable methods from the previous class."
Remove methods from what? The class or the namespace? If the class, does
it remove all methods from the class then pull in ones from the new
namespace? Or do we look at the old namespace and see what methods it
has, then remove just ones that appear there?
Thanks,
Jonathan
