Created
March 25, 2018 00:14
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A generic serialization function in Swift using Mirror API
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func serialize(object: Any) -> [String : Any]? { | |
let mirror = Mirror(reflecting: object) | |
guard mirror.displayStyle == .struct || mirror.displayStyle == .class else { | |
return .none | |
} | |
var result: [String : Any] = [:] | |
for case let (label?, value) in mirror.children { | |
let childMirror = Mirror(reflecting: value) | |
if let displayStyle = childMirror.displayStyle { | |
switch displayStyle { | |
case .`class`: | |
result[label] = serialize(object: value) | |
case .collection: | |
result[label] = Array(childMirror.children.lazy | |
.map { (_, value) in serialize(object: value) } | |
.filter { $0 != nil } | |
.map { $0 as! [String : Any]}) | |
case .dictionary: | |
result[label] = serialize(object: value) | |
case .`enum`: | |
// not supported | |
break | |
case .optional: | |
switch childMirror.children.first { | |
case let .some((.some("some"), childValue)): | |
result[label] = serialize(object: childValue) ?? childValue | |
default: | |
result[label] = NSNull() | |
} | |
break | |
case .set: | |
result[label] = Array(childMirror.children.lazy | |
.map { (_, value) in serialize(object: value) } | |
.filter { $0 != nil } | |
.map { $0 as! [String : String]}) | |
case .`struct`: | |
result[label] = serialize(object: value) | |
case .tuple: | |
// not supported | |
break | |
} | |
} else { | |
result[label] = "\(value)" | |
} | |
} | |
return result | |
} | |
let user = User( | |
email: "guidomb@gmail.com", | |
password: "asdasd", | |
friends: [ | |
User(email: "anita@gmail.com", password: "123456"), | |
User(email: "luciano@gmail.com", password: "asd123456") | |
] | |
) | |
print(serialize(object: user)) |
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