On 2/9/11 4:20 PM, Allen Wirfs-Brock wrote:
If any browser host objects implementation do have unique [[DefaultValue]] implementations do they do anything other than the equivalent of calling their toString or valueOf methods?
If I'm reading the code right (and I could well not be!), Gecko's JS reflections of NPAPI-provided stuff have a [[DefaultValue]] that purposefully does not call valueOf (see http://hg.mozilla.org/mozilla-central/file/280e978fc6fb/modules/plugin/base/src/nsJSNPRuntime.cpp#l1686).
There's also some weirdness with NPAPI stuff at <http://hg.mozilla.org/mozilla-central/file/280e978fc6fb/modules/plugin/base/src/nsJSNPRuntime.cpp#l2177>.
Also, arbitrary XPConnect objects could define a custom [[DefaultValue]] via their classinfo in Gecko (though as far as I can tell none of the ones we ship in the browser by default do; who knows about extensions).
XPConnect objects without classinfo also use a custom [[DefaultValue]] defined at http://hg.mozilla.org/mozilla-central/file/280e978fc6fb/js/src/xpconnect/src/xpcwrappednativejsops.cpp#l540
I don't know what other host objects we might have around that use a non-default [[DefaultValue]]; it's a little hard to look through the code for this in Gecko, unfortunately. :(
Of the above, I believe the NPAPI bits are web-exposed and the rest are not (again, modulo whatever extensions do).
-Boris _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
