On Tue, 21 Apr 2009 10:55:09 +0200, Oliver Hunt <[email protected]> wrote:
On Apr 21, 2009, at 1:38 AM, Anne van Kesteren wrote:
obj = { toString:function() { throw("haha") } }
obj2 = { toString:function() { return 1 } }
obj3 = { toString:function() { return obj } }
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.
[1] ECMA262-5 RC
http://www.ecma-international.org/publications/files/drafts/tc39-2009-025.pdf
Ok, that makes sense. This should also be clarified everywhere ToBoolean,
ToNumber, ToUint16, and ToInt32 are invoked. (Plus anything I've missed
:-))
--
Anne van Kesteren
http://annevankesteren.nl/
