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8106a11dac
These classes don't show up well in generated headers (rdar://problem/20855568), can't actually be allocated from Objective-C (rdar://problem/17184317), and make the story of "what is exposed to Objective-C" more complicated. Better to just disallow them. All classes are still "id-compatible" in that they can be converted to AnyObject and passed to Objective-C, they secretly implement NSObjectProtocol (via our SwiftObject root class), and their members can still be individually exposed to Objective-C. The frontend flag -disable-objc-attr-requires-foundation-module will disable this requirement as well, which is still necessary for both the standard library and a variety of tests I didn't feel like transforming. Swift SVN r29760
49 lines
1.2 KiB
Swift
49 lines
1.2 KiB
Swift
// RUN: %target-build-swift %s -Xfrontend -disable-objc-attr-requires-foundation-module -o %t-main
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// RUN: %target-run %t-main | FileCheck %s
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// REQUIRES: executable_test
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// REQUIRES: objc_interop
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import Foundation
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protocol Protocol : class {
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func noop()
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}
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//========================== Test ObjC classes ==========================
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@objc
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class ObjCClassBase : Protocol {
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func noop() { print("noop") }
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}
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@objc
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class ObjCClass : ObjCClassBase {
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override init() {
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print("ObjCClass Created")
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}
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deinit {
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print("ObjCClass Destroyed")
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}
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}
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func printState(x : ObjCClassBase?) {
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print((x != nil) ? "is present" : "is nil")
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}
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func testObjCClass() {
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print("testObjCClass") // CHECK: testObjCClass
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weak var w : ObjCClassBase?
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printState(w) // CHECK-NEXT: is nil
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var c : ObjCClassBase = ObjCClass() // CHECK: ObjCClass Created
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printState(w) // CHECK-NEXT: is nil
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w = c
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printState(w) // CHECK-NEXT: is present
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c.noop() // CHECK-NEXT: noop
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c = ObjCClassBase() // CHECK-NEXT: ObjCClass Destroyed
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printState(w) // CHECK-NEXT: is nil
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}
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testObjCClass()
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