[Bug 20225] don't allow overridden operations and attribute getters/setters to be invoked on descendant objects

https://www.w3.org/Bugs/Public/show_bug.cgi?id=20225

--- Comment #8 from Ian 'Hixie' Hickson <ian@hixie.ch> ---
I don't distinguish binding code from implementation code; it's all one binary,
and some implementations don't have an explicit "binding" anyway. The check
about whether it's an HTMLCollection or HTMLPropertiesCollection has to be
somewhere. Whether it's in the implementation of the method or the binding,
it's the same cost; in theory, one pointer comparison.

By "I don't think that scales" I mean that it would mean that every time an
interface wants to specialise a base class' behaviour, the spec would have to
define what the superclass' method would do when applied to a subclass.

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Received on Friday, 7 December 2012 01:46:06 UTC