Relationship between globals, Realms, and global environment records
allen at wirfs-brock.com
Mon Nov 24 16:51:40 PST 2014
On Nov 24, 2014, at 7:11 AM, Anne van Kesteren wrote:
> On Sat, Nov 22, 2014 at 10:42 PM, Boris Zbarsky <bzbarsky at mit.edu> wrote:
>> On 11/22/14, 6:20 AM, Anne van Kesteren wrote:
>>> I thought these to be 1:1:1, but e.g. HTML defines the document.open()
>>> which replaces the global object. It's not currently defined in
>>> excruciating detail, but I suspect it will be at some point since
>>> content depends on this working.
>>> Should that affect the Realm and global environment record?
>> Yes, imo.
> I filed https://www.w3.org/Bugs/Public/show_bug.cgi?id=27419 to track
> this on the HTML side.
There is definite a 1:1:1 relationship between a global object, realmRec, global environment record. And ES views those relationships are immutable. You can't just change the global object of a realmRec or give it a different global environment record after it has been initialized.
Note that the ES6 spec. defines InitializeFirstRealm  that define how the first Realm gets created. Creating additional realms would have to perform a similar set of steps.
Subsequent to the ES6 spec. we will be defining a ES level Realm object and associated API that supports creation and initialization of additional realms.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the es-discuss