mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
e97ab635ea
Previously, bridging conversions were handled as a form of "explicit conversion" that was treated along the same path as normal conversions in matchTypes(). Historically, this made some sense---bridging was just another form of conversion---however, Swift now separates out bridging into a different kind of conversion that is available only via an explicit "as". This change accomplishes a few things: * Improves type inference around "as" coercions. We were incorrectly inferring type variables of the "x" in "x as T" in cases where a bridging conversion was expected, which cause some type inference failures (e.g., the SR-3319 regression). * Detangles checking for bridging conversions from other conversions, so it's easier to isolate when we're applying a bridging conversion. * Explicitly handle optionals when dealing with bridging conversions, addressing a number of problems with incorrect diagnostics, e.g., complains about "unrelated type" cast failures that would succeed at runtime. Addresses rdar://problem/29496775 / SR-3319 / SR-2365.
32 lines
761 B
Plaintext
32 lines
761 B
Plaintext
// RUN: not %target-swift-frontend(mock-sdk: %clang-importer-sdk) -disable-objc-attr-requires-foundation-module -typecheck %s -emit-fixits-path %t.remap
|
|
// RUN: c-arcmt-test %t.remap | arcmt-test -verify-transformed-files %s.result
|
|
import ObjectiveC
|
|
|
|
// REQUIRES: objc_interop
|
|
|
|
@objc class Selectors {
|
|
func takeSel(_: Selector) {}
|
|
func mySel() {}
|
|
func test() {
|
|
takeSel(#selector(Selectors.mySel))
|
|
takeSel(#selector(Selectors.mySel))
|
|
}
|
|
}
|
|
|
|
func foo(an : Any) {
|
|
let a1 : AnyObject
|
|
a1 = an as AnyObject
|
|
let a2 : AnyObject?
|
|
a2 = an as AnyObject
|
|
let a3 : AnyObject!
|
|
a3 = an as AnyObject
|
|
}
|
|
|
|
func foo1(_ an : Any) {
|
|
let obj: AnyObject = an as AnyObject
|
|
}
|
|
|
|
func foo2(_ messageData: Any?) -> AnyObject? {
|
|
return messageData as AnyObject
|
|
}
|