94 lines
3.9 KiB
Swift
94 lines
3.9 KiB
Swift
import Foundation
|
|
|
|
/// Lightweight `Codable` wrapper that round-trips heterogeneous JSON payloads.
|
|
///
|
|
/// Marked `@unchecked Sendable` because it can hold reference types.
|
|
public struct AnyCodable: Codable, @unchecked Sendable, Hashable {
|
|
public let value: Any
|
|
|
|
public init(_ value: Any) { self.value = value }
|
|
|
|
public init(from decoder: Decoder) throws {
|
|
let container = try decoder.singleValueContainer()
|
|
if let intVal = try? container.decode(Int.self) { self.value = intVal; return }
|
|
if let doubleVal = try? container.decode(Double.self) { self.value = doubleVal; return }
|
|
if let boolVal = try? container.decode(Bool.self) { self.value = boolVal; return }
|
|
if let stringVal = try? container.decode(String.self) { self.value = stringVal; return }
|
|
if container.decodeNil() { self.value = NSNull(); return }
|
|
if let dict = try? container.decode([String: AnyCodable].self) { self.value = dict; return }
|
|
if let array = try? container.decode([AnyCodable].self) { self.value = array; return }
|
|
throw DecodingError.dataCorruptedError(in: container, debugDescription: "Unsupported type")
|
|
}
|
|
|
|
public func encode(to encoder: Encoder) throws {
|
|
var container = encoder.singleValueContainer()
|
|
switch self.value {
|
|
case let intVal as Int: try container.encode(intVal)
|
|
case let doubleVal as Double: try container.encode(doubleVal)
|
|
case let boolVal as Bool: try container.encode(boolVal)
|
|
case let stringVal as String: try container.encode(stringVal)
|
|
case is NSNull: try container.encodeNil()
|
|
case let dict as [String: AnyCodable]: try container.encode(dict)
|
|
case let array as [AnyCodable]: try container.encode(array)
|
|
case let dict as [String: Any]:
|
|
try container.encode(dict.mapValues { AnyCodable($0) })
|
|
case let array as [Any]:
|
|
try container.encode(array.map { AnyCodable($0) })
|
|
case let dict as NSDictionary:
|
|
var converted: [String: AnyCodable] = [:]
|
|
for (k, v) in dict {
|
|
guard let key = k as? String else { continue }
|
|
converted[key] = AnyCodable(v)
|
|
}
|
|
try container.encode(converted)
|
|
case let array as NSArray:
|
|
try container.encode(array.map { AnyCodable($0) })
|
|
default:
|
|
let context = EncodingError.Context(codingPath: encoder.codingPath, debugDescription: "Unsupported type")
|
|
throw EncodingError.invalidValue(self.value, context)
|
|
}
|
|
}
|
|
|
|
public static func == (lhs: AnyCodable, rhs: AnyCodable) -> Bool {
|
|
switch (lhs.value, rhs.value) {
|
|
case let (l as Int, r as Int): l == r
|
|
case let (l as Double, r as Double): l == r
|
|
case let (l as Bool, r as Bool): l == r
|
|
case let (l as String, r as String): l == r
|
|
case (_ as NSNull, _ as NSNull): true
|
|
case let (l as [String: AnyCodable], r as [String: AnyCodable]): l == r
|
|
case let (l as [AnyCodable], r as [AnyCodable]): l == r
|
|
default:
|
|
false
|
|
}
|
|
}
|
|
|
|
public func hash(into hasher: inout Hasher) {
|
|
switch self.value {
|
|
case let v as Int:
|
|
hasher.combine(0); hasher.combine(v)
|
|
case let v as Double:
|
|
hasher.combine(1); hasher.combine(v)
|
|
case let v as Bool:
|
|
hasher.combine(2); hasher.combine(v)
|
|
case let v as String:
|
|
hasher.combine(3); hasher.combine(v)
|
|
case _ as NSNull:
|
|
hasher.combine(4)
|
|
case let v as [String: AnyCodable]:
|
|
hasher.combine(5)
|
|
for (k, val) in v.sorted(by: { $0.key < $1.key }) {
|
|
hasher.combine(k)
|
|
hasher.combine(val)
|
|
}
|
|
case let v as [AnyCodable]:
|
|
hasher.combine(6)
|
|
for item in v {
|
|
hasher.combine(item)
|
|
}
|
|
default:
|
|
hasher.combine(999)
|
|
}
|
|
}
|
|
}
|