On Sun, Nov 20, 2011 at 8:36 PM, Hajime Morrita <[email protected]> wrote: > One traditional pattern is to split a big class into a set small > classes plus a "hub" class > like how Adam has done for original Frame.
^^^ The work to split up Frame was largely done before I was involved with the project. > In that pattern, small classes has a reference to the hub class and > know its API. > I hope these small classes know just a small part of its hub class via > interface (abstract class.) > In that way, such classes can be unit-tested independently without > instantiating the hub class, > whose instantiation is typically a difficult job. > > Personally, I feel that we don't need category-like mixin mechanism > for existing hub classes. > Since we have just a few or dozen of instances of these classes and > the size overhead from extra pointers > is negligible. It isn't case for the node family though. > > -- > morrita > > On Sun, Nov 20, 2011 at 2:23 AM, Adam Roben <[email protected]> wrote: >> On Nov 18, 2011, at 5:55 PM, Adam Barth wrote: >> >>> Really, SQL_DATABASE just wants to store some state per >>> ScriptExecutionContext. It seems like there should be a way to do >>> that without making a mess of ScriptExecutionContext. >>> >>> IMHO, we want something like the C++ equivalent of Objective-C >>> categories. I'm not sure how best to achieve that. >> >> Note that ObjC categories don't allow you to add extra state (i.e., ivars) >> to classes. They only allow you to add extra methods. >> >> -Adam >> >> _______________________________________________ >> webkit-dev mailing list >> [email protected] >> http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev >> > > > > -- > morrita > _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
