On Apr 25, 2014, at 11:45 AM, Oliver Hunt wrote:
>
> o = {__proto__: {set foo() {print(“bar”)}}
> o.foo = (o.__defineSetter__(“foo”, function(){ print(“foo”)})), 5
1) o.f evaluates to a Reference whose base is the value of 0 and whose
referenced name is "foo". No lookup occurs at this point.
2) o.__defineSetter__ creates an accessor own property on o
3) a PutValue is done using the reference from step 1. It does a property
lookup and finds/uses the setter defined in step 2
4) print("foo" ) happens
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