Re: Associating new objects with globals: how to best do it?

On Feb 25, 2014, at 10:48 AM, Allen Wirfs-Brock wrote:

> 
> On Feb 25, 2014, at 9:45 AM, Boris Zbarsky wrote:
> 
>> 
>> We've talked about some sort of default global-association for WebIDL methods and geteters.  Would it make sense to align this with the ES6 behavior by declaring that if a WebIDL method creates objects it does so in the global of the callee function unless something explicitly specifies otherwise?
> 
> ES6 requires that every function, including get/set functions have a Realm association. 
> 
> Just to be clear, when you say "callee" above you mean the WebIDL method under discussion.  If so, then what you are describing is consistent with the ES6 requirements.  A function that creates a new object normally initializes the new object (eg, sets its [[Prototype]]) using the Realm of the creating function.

A follow on thought.  You should probably specify that all WebIDL functions (including methods, constructors, get/set functions, etc.) are "Built-in function objects" as defined in 
http://people.mozilla.org/~jorendorff/es6-draft.html#sec-built-in-function-objects Or perhaps, a refinement of that.

This takes care of the Realm association and allows the function to be implemented either 'natively" or via ECMAScript code, at the choice of the implementation.

Allen