[swift-dev] How should NSArray<void(^)(void)>* be imported?
jtbandes at gmail.com
Thu Mar 3 04:23:37 CST 2016
I'm interested in fixing a pet peeve of mine:
The failing assertion is in Array._forceBridgeFromObjectiveC, namely
Swift._isBridgedToObjectiveC(Element.self). Element is plain ol "() -> ()",
but probably should be @convention(block) since it was imported from
I've started tracing through the importer, and I found that
`adjustTypeForConcreteImport` is enforcing
FunctionTypeRepresentation::Swift because the ImportKind is BridgedValue —
this is hardcoded in the call to importType for the type parameters to
NSArray (and NSDictionary and NSSet) in
Are the Foundation collection classes only temporarily special-cased here,
until Obj-C generics are generally supported? Is someone working on this in
the near future?
If this worked correctly, would we expect to see "var executionBlocks:
[@convention(block) () -> ()]" ? If so, would this be best achieved by
passing a different ImportKind, possibly introducing a new ImportKind, or
some other solution?
I'm guessing that it doesn't make sense for () -> () to be
_ObjectiveCBridgeable, but either way I'm not sure where the
_isBridgedToObjectiveC implementation for blocks would come from.
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