- From: Cameron McCormack <cam@mcc.id.au>
- Date: Wed, 17 Jun 2009 16:39:11 +1000
- To: WebApps WG <public-webapps@w3.org>
- Cc: Anne van Kesteren <annevk@opera.com>, Oliver Hunt <oliver@apple.com>
Anne van Kesteren:
> If something takes a DOMString as value is it clearly defined what
> happens if the toString algorithm throws or returns a non-DOMString? I
> haven't been able to find descriptions for that in the Web IDL
> specification. E.g.
>
> obj = { toString:function() { throw("haha") } }
> obj2 = { toString:function() { return 1 } }
> obj3 = { toString:function() { return obj } }
Oliver Hunt:
> The [[ToString]] algorithm is defined in ECMAScript (Section 9.8, [1]),
> the specified behaviour would result in [[ToString]] on obj2 producing
> the string "1"; [[ToString]] on obj3 will result in a TypeError, as
> [[DefaultValue]] will produce a non-primitive type (Section 9.1, [1])
>
> I would assume that the exception will be propagated to the runtime, but
> it should be stated.
Added some text for this:
http://dev.w3.org/2006/webapi/WebIDL/#es-handling-exceptions
Let me know if you think it’s insufficient.
Thanks,
Cameron
--
Cameron McCormack ≝ http://mcc.id.au/
Received on Wednesday, 17 June 2009 06:39:49 UTC