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Support *class claster* pattern by
CustomDecodable<T>.
Reference: ikesyo#118, ikesyo#122, ikesyo#123
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| // | ||
| // CustomDecodable.swift | ||
| // Himotoki | ||
| // | ||
| // Created by Tomohiro Kumagai on 4/26/16. | ||
| // Copyright © 2016 Syo Ikeda. All rights reserved. | ||
| // | ||
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| public protocol CustomDecodableType { | ||
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| associatedtype DecodeType | ||
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| static func decode(e: Extractor) throws -> DecodeType | ||
| } | ||
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| public struct CustomDecodable<T:CustomDecodableType> : Decodable { | ||
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| private var _value: Any | ||
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| private init(_ value: T.DecodeType) { | ||
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| _value = value | ||
| } | ||
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| public var value: T.DecodeType { | ||
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| return _value as! T.DecodeType | ||
| } | ||
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| public static func decode(e: Extractor) throws -> CustomDecodable { | ||
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| return try CustomDecodable(T.decode(e)) | ||
| } | ||
| } | ||
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| // MARK: - Extensions | ||
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| extension CustomDecodable : CustomStringConvertible { | ||
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| public var description: String { | ||
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| return String(_value) | ||
| } | ||
| } | ||
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| extension CustomDecodable : CustomDebugStringConvertible { | ||
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| public var debugDescription: String { | ||
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| return String(reflecting: _value) | ||
| } | ||
| } | ||
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| extension CustomDecodable : CustomPlaygroundQuickLookable { | ||
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| public func customPlaygroundQuickLook() -> PlaygroundQuickLook { | ||
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| return PlaygroundQuickLook(reflecting: _value) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| // | ||
| // CustomDecodableTest.swift | ||
| // Himotoki | ||
| // | ||
| // Created by Tomohiro Kumagai on 4/26/16. | ||
| // Copyright © 2016 Syo Ikeda. All rights reserved. | ||
| // | ||
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| import XCTest | ||
| import Himotoki | ||
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| /// Using non final class Decodable #118 | ||
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| private class A: CustomDecodableType { | ||
| var type : Int = 0 | ||
| var title: String = "" | ||
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| init (e: Extractor) { | ||
| type = try! e <| "type" | ||
| title = try! e <| "title" | ||
| } | ||
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| static func decode(e: Extractor) throws -> A { | ||
| let type : Int = try e <| "type" | ||
| switch type { | ||
| case 0: | ||
| return B(e: e) | ||
| case 1: | ||
| return C(e: e) | ||
| case 2: | ||
| return A(e: e) | ||
| default: | ||
| fatalError() | ||
| } | ||
| } | ||
| } | ||
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| private class B: A { | ||
| var total : Double = 0.0 | ||
| override init(e: Extractor) { | ||
| total = try! e <| "total" | ||
| super.init(e: e) | ||
| } | ||
| } | ||
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| private class C: A { | ||
| var link : String = "" | ||
| override init(e: Extractor) { | ||
| link = try! e <| "link" | ||
| super.init(e: e) | ||
| } | ||
| } | ||
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| class CustomDecodableTest: XCTestCase { | ||
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| override func setUp() { | ||
| super.setUp() | ||
| // Put setup code here. This method is called before the invocation of each test method in the class. | ||
| } | ||
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| override func tearDown() { | ||
| // Put teardown code here. This method is called after the invocation of each test method in the class. | ||
| super.tearDown() | ||
| } | ||
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| func testDecode() { | ||
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| let json0: [String : AnyJSON] = [ "type" : 0, "title" : "TITLE 0", "total" : 0.5, "link" : "LINK 1" ] | ||
| let json1: [String : AnyJSON] = [ "type" : 1, "title" : "TITLE 1", "total" : 1.8, "link" : "LINK 2" ] | ||
| let json2: [String : AnyJSON] = [ "type" : 2, "title" : "TITLE 2", "total" : 2.3, "link" : "LINK 3" ] | ||
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| let instance0 = try! decodeValue(json0) as CustomDecodable<A> | ||
| let instance1 = try! decodeValue(json1) as CustomDecodable<A> | ||
| let instance2 = try! decodeValue(json2) as CustomDecodable<A> | ||
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| // Check `type` and `title` | ||
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| XCTAssertEqual(instance0.value.type, 0) | ||
| XCTAssertEqual(instance0.value.title, "TITLE 0") | ||
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| XCTAssertEqual(instance1.value.type, 1) | ||
| XCTAssertEqual(instance1.value.title, "TITLE 1") | ||
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| XCTAssertEqual(instance2.value.type, 2) | ||
| XCTAssertEqual(instance2.value.title, "TITLE 2") | ||
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| // Check Inheritance | ||
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| XCTAssertTrue(instance0.value is B) | ||
| XCTAssertFalse(instance0.value is C) | ||
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| XCTAssertFalse(instance1.value is B) | ||
| XCTAssertTrue(instance1.value is C) | ||
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| XCTAssertFalse(instance2.value is B) | ||
| XCTAssertFalse(instance2.value is C) | ||
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| XCTAssertEqual(String(instance0.value.dynamicType), String(B.self)) | ||
| XCTAssertNotEqual(String(instance0.value.dynamicType), String(A.self)) | ||
| XCTAssertNotEqual(String(instance0.value.dynamicType), String(C.self)) | ||
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| XCTAssertEqual(String(instance1.value.dynamicType), String(C.self)) | ||
| XCTAssertNotEqual(String(instance1.value.dynamicType), String(A.self)) | ||
| XCTAssertNotEqual(String(instance1.value.dynamicType), String(B.self)) | ||
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| XCTAssertEqual(String(instance2.value.dynamicType), String(A.self)) | ||
| XCTAssertNotEqual(String(instance2.value.dynamicType), String(B.self)) | ||
| XCTAssertNotEqual(String(instance2.value.dynamicType), String(C.self)) | ||
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| let b0 = instance0.value as? B | ||
| let b1 = instance1.value as? B | ||
| let b2 = instance2.value as? B | ||
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| let c0 = instance0.value as? C | ||
| let c1 = instance1.value as? C | ||
| let c2 = instance2.value as? C | ||
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| XCTAssertEqual(b0?.total, 0.5) | ||
| XCTAssertEqual(b1?.total, nil) | ||
| XCTAssertEqual(b2?.total, nil) | ||
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| XCTAssertEqual(c0?.link, nil) | ||
| XCTAssertEqual(c1?.link, "LINK 2") | ||
| XCTAssertEqual(c2?.link, nil) | ||
| } | ||
| } |