Codability Under 100

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1macro codable(): Construct { environment in	2let fields: [@stored](		environment.target.declaration.members.filter(all: @stored)	)	3environment.expand {		4extension #environment.target.declaration.self {			5function encode(to encoder: Encoder): Result<Void, EncodingError> {				let container: KeyedEncodingContainer(encoder.keyedContainer())				6#fields.map { property in					switch container.encode(#property.identifier, forKey: property.identifier.name) {					case .success:						break					case .failure(error):						return .failure(cause: error)					}				}				return .success(result: Void())			}			7function decode(from decoder: Decoder): Result<Self, DecodingError> {				let container: KeyedDecodingContainer(decoder.keyedContainer())				#fields.map { property in					switch container.decode(#property.type.self, forKey: property.identifier.name) {					case .success(#property.identifier):						self.#property.identifier: #property.identifier					case .failure(error):						return .failure(cause: error)					}				}				return .success(result: self)			}		}	}}