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// RUN: %target-run-simple-swift | %FileCheck %s
// REQUIRES: executable_test
// REQUIRES: objc_interop
import CoreFoundation
import Foundation
class SwiftClass { }
func genericCast<T>(_ x: AnyObject, _: T.Type) -> T? {
return x as? T
}
func genericCastUnconditional<T>(_ x: AnyObject, _: T.Type) -> T {
return x as! T
}
// Check _cfTypeID() on a Swift class
let nsObject = NSObject()
let swiftObject = SwiftClass()
assert(CFGetTypeID(nsObject) == CFGetTypeID(swiftObject))
// Check CFString <-> AnyObject
func testCFStringAnyObject() {
// Create a CFString
let cfStr: CFString
= CFStringCreateWithCString(nil, "Swift", CFStringBuiltInEncodings.ASCII.rawValue)
// CHECK: Swift
print(cfStr)
// Convert it to AnyObject
let anyObject: AnyObject = cfStr
// CHECK: Swift
print(anyObject)
// Convert it back to a CFString
let cfStr2 = anyObject as! CFString
// CHECK: Swift
print(cfStr2)
// Conditional cast through a generic to a CFString
if let cfStr3 = genericCast(anyObject, CFString.self) {
// CHECK: Swift
print(cfStr3)
} else {
print("Conditional cast failed")
}
// Forced cast through a generic to a CFString
let cfStr4 = genericCastUnconditional(anyObject, CFString.self)
// CHECK: Swift
print(cfStr4)
// CHECK: done
print("done")
}
testCFStringAnyObject()
// Check CFString.Type <-> AnyObject.Type
func testCFStringAnyObjectType() {
let cfStr: CFString
= CFStringCreateWithCString(nil, "Swift", CFStringBuiltInEncodings.ASCII.rawValue)
let cfStrType = type(of: cfStr)
// CHECK: [[STRING_CLASS:(NS|CF).*String]]
print(cfStrType)
// Convert to AnyObject.Type
let anyObjectType: AnyObject.Type = cfStrType
// CHECK: [[STRING_CLASS]]
print(anyObjectType)
// Convert back to CFString.Type
let cfStrType2 = anyObjectType as! CFString.Type
// CHECK: [[STRING_CLASS]]
print(cfStrType2)
// CHECK: done
print("done")
}
testCFStringAnyObjectType()
// https://github.com/apple/swift/issues/43022
func testOptionalCFStringToStringAndNSString() {
let optCFStr: CFString? = "Swift" as CFString
// CHECK: {{^}}Optional(Swift){{$}}
print(optCFStr)
let swiftStr1 = optCFStr as? String
let swiftStr2 = optCFStr as String?
let nsStr1 = optCFStr as? NSString
let nsStr2 = optCFStr as NSString?
if let unwrapped = swiftStr1 {
// CHECK-NEXT: {{^}}Swift{{$}}
print(unwrapped)
}
if let unwrapped = swiftStr2 {
// CHECK-NEXT: {{^}}Swift{{$}}
print(unwrapped)
}
if let unwrapped = nsStr1 {
// CHECK-NEXT: {{^}}Swift{{$}}
print(unwrapped)
}
if let unwrapped = nsStr2 {
// CHECK-NEXT: {{^}}Swift{{$}}
print(unwrapped)
}
// CHECK-NEXT: {{^}}done{{$}}
print("done")
}
testOptionalCFStringToStringAndNSString()
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