On Jun 24, 2008, at 9:34 PM, Allen Wirfs-Brock wrote:
Note that steps 1,2, and 5 amount to ToObject(GetValue(“abc”)).
GetValue(“abc”) yields “abc” so this is really just ToObject
(“abc”). 9.9 says ToObject when applied to a s primitive string:
“Create a new String object whose [[value]] property is set to the
value of the string.”. That string object becomes the base object
of the resulting Reference. So the literal get converted into an
object that has a [[Get]]
Oh, I agree -- that's why I wrote "No" in reply to your "Am I
wrong?" :-).
/be
From: Brendan Eich [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 24, 2008 7:34 PM
To: Allen Wirfs-Brock; Maciej Stachowiak
Cc: [EMAIL PROTECTED] x-discuss; Pratap Lakshman (VJ#SDK);
es4-discuss@mozilla.org es4-discuss
Subject: Re: Semantics of "indexed" string access
On Jun 24, 2008, at 6:39 PM, Allen Wirfs-Brock wrote:
Actually, the intent was to support “indexed” access to both string
values and string wrapper objects. I just didn’t make it clear in
the example. The case analysis was intended to apply to both. My
reading of section 11.2.1 is that a string value is to be
transformed into an object before any actual property access
semantics are applied. Am I wrong?
No, the primitive string type (called "String", confusingly, in
ES1-3 when it uses type names) is not an object. It has no internal
methods such as [[Get]].
Specifying the indexed unit-string access semantic based on the
wrapper String (spelled as in the language) object seems ok. I
noted a Result(4) that should have been Result(6) in step 7, via
private email to Allen (this type of error is going to happen a
lot; count on it).
/be
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