On Dec 18, 2012, at 10:42 AM, John J Barton wrote:
> I'm trying to decode section 8.2.4
> The Reference Specification Type
>
> I believe that it is trying to say
> obj.prop = ...
> obj is reference base
> prop is reference name
>
> But base can also be Boolean, String, Number and env. record. I can't figure
> out what a reference name means in these cases. I guess the |name| is only
> relevant for Object, in which case the spec would be clearer if we called it
> a |property key|, as in
> GetReferencedPropertyKey(V). Returns the referenced property key component
> of the reference V.
>
I'r all in 8.2.4.1 and 8.2.4.2 (GetValue/SetValue).
Consider an expression like:
123.0.toFixed
This evaluates to a Reference value {base: 0, referenced name: "toFixed",
strict: false}
(or strict is true if in strict code)
GetValue/SetValue explicitly coerces primitive base values to Objects in order
to do property lookup.
In general, within the ES6 spec, the introduction of symbols as property keys
introduces some confusion about the implications of the work "name". I'm
slowly migrating some uses of "name" to "key". However, symbols doesn't seem
to be the source of your problem here.
Allen
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