I'm doing some experiments with @propertyWrapper. I've got a propertyWrapper that adds a "comment" to a variable on type Testing , to be accessed with the projected value.
When I decode Testing however, the comment gets lost (the property wrapper is required to have Codable conformance & there isn't a way to reference the comment in the init(from: Decoder) ) Wondering if anyone knows a way of keeping that comment when decoding the Testing type.
@propertyWrapper
struct Comment<T>: Codable {
private let comment: String
var wrappedValue: T
var projectedValue: String { self.comment }
init(comment: String) {
self.comment = comment
}
init(from decoder: Decoder) throws {
// something here?
}
func encode(to encoder: Encoder) throws {
// do nothing
}
}
struct Testing: Codable {
let bar: String
@Comment(comment: "Some comment for this variable.") // Would like the `@Comment` property wrapper to have this string ("Some comment
var foo: String // for this variable.") in it when an instance of Testing is decoded.
}
The example is contrived, but it gets the issue across.