inSetterContext abstract method
Returns true
if this expression is computing a left-hand value (that is,
if this expression is in a context where the operator '[]=' is
invoked).
Note that inGetterContext and inSetterContext aren't opposites, nor
are they mutually exclusive. In other words, it's possible for both
methods to return true
when invoked on the same node.
Implementation
// TODO(brianwilkerson): Convert this to a getter.
bool inSetterContext();