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9f0cec4984
Implement the Objective-C #keyPath expression, which maps a sequence of @objc property accesses to a key-path suitable for use with Cocoa[Touch]. The implementation handles @objc properties of types that are either @objc or can be bridged to Objective-C, including the collections that work with key-value coding (Array/NSArray, Dictionary/NSDictionary, Set/NSSet). Still to come: code completion support and Fix-Its to migrate string literal keypaths to #keyPath. Implements the bulk of SR-1237 / rdar://problem/25710611.
71 lines
1.7 KiB
Swift
71 lines
1.7 KiB
Swift
// RUN: %target-run-simple-swift | 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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class Person : NSObject {
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@objc(firstNameString) var firstName: String
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var lastName: String
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init(firstName: String, lastName: String) {
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self.firstName = firstName
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self.lastName = lastName
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}
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override var description: String {
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return "\(lastName), \(firstName)"
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}
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}
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class Band : NSObject {
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var members: [Person] = []
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}
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class RecordLabel : NSObject {
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var bands: [String : Band] = [:]
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}
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let band = Band()
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band.members = [Person(firstName: "John", lastName: "Lennon"),
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Person(firstName: "Paul", lastName: "McCartney"),
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Person(firstName: "George", lastName: "Harrison"),
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Person(firstName: "Ringo", lastName: "Star")]
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// CHECK: ===Members===
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// CHECK-NEXT: (
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// CHECK-NEXT: "Lennon, John",
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// CHECK-NEXT "McCartney, Paul",
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// CHECK-NEXT "Harrison, George",
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// CHECK-NEXT "Star, Ringo"
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// CHECK-NEXT)
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print("===Members===")
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print(band.value(forKeyPath: #keyPath(Band.members))!.description)
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// CHECK: ===First Names===
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// CHECK-NEXT: (
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// CHECK-NEXT: John,
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// CHECK-NEXT: Paul,
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// CHECK-NEXT: George,
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// CHECK-NEXT: Ringo
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// CHECK-NEXT:)
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print("===First Names===")
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print(band.value(forKeyPath: #keyPath(Band.members.firstName))!.description)
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let recordLabel = RecordLabel()
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recordLabel.bands["Beatles"] = band
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// CHECK: ===Last Names===
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// CHECK-NEXT: (
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// CHECK-NEXT: Lennon,
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// CHECK-NEXT: McCartney,
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// CHECK-NEXT: Harrison,
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// CHECK-NEXT: Star
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// CHECK-NEXT: )
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print("===Last Names===")
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print(recordLabel.value(forKeyPath: #keyPath(RecordLabel.bands.Beatles.members.lastName))!.description)
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// CHECK: DONE
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print("DONE")
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