Feature

[GIKICoder]

1，能否支持默认值的宏扩展。
2，支持Empty 和 快速扩展的Copy 方法。
@codable
@DefaultCodable
public struct Model: Codable, Sendable {
public let name: String
public let title: String
public let createdAt: Int
}

extension Model {
enum CodingKeys: String, CodingKey {
case name
case title
case createdAt
}
public init(from decoder: any Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
self.name = try container.decodeIfPresent(String.self, forKey: .name) ?? ""
self.title = try container.decodeIfPresent(String.self, forKey: .title) ?? ""
self.createdAt = try container.decodeIfPresent(Int.self, forKey: .createdAt) ?? 0
}
public func encode(to encoder: any Encoder) throws {
var container = encoder.container(keyedBy: CodingKeys.self)
try container.encode(name, forKey: .name)
try container.encode(title, forKey: .title)
try container.encode(createdAt, forKey: .createdAt)
}
public static let empty = Model(
name: "",
title: "",
createdAt: 0
)
public func copy(
name: String? = nil,
title: String? = nil,
createdAt: Int? = nil
) -> Model {
Model(
name: name ?? self.name,
title: title ?? self.title,
createdAt: createdAt ?? self.createdAt
)
}
}