Le 18 août 2014 à 12:59, Till Schneidereit <[email protected]> a écrit :
> > Note also that, by my reading of the spec at least, all implementations > currently fully adhere to the spec: they "[p]erform an > implementation-dependent sequence of calls to the [[Get]] and [[Set]] > internal methods of obj, to the DeletePropertyOrThrow abstract operation with > obj as the first argument, and to SortCompare". My reading of this is that > "implementation-denendent sequence" refers to all four mentioned functions, > where an implementation might either intermix all of them (like v8/JSC do) or > first do a (sub-)sequence of only [[Get]] calls and then a second > (sub-)sequence intermixing calls to all the other functions (like > Chakra/SpiderMonkey). > Nit: As currently specced, SortCompare includes obligatory calls to [[HasProperty]] and [[Get]] on some keys before invoking the comparison function: so, SpiderMonkey/Chakra don't adhere to the specs. Even JSC/V8 don't fully adhere to the spec on this point, because (as I've observed) they may omit a call to [[HasProperty]]/[[Get]] when the value is known. But I think it is a spec bug that can be corrected, in order to make all current implementations compliant (SortCompare should take the values, not the keys, as arguments). —Claude _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
