Mapper

Utility for easy deserialization of JSON in Swift. This is like a cross between SwiftyJSON and the ImmutableMappable in ObjectMapper. It allows you to easily extract types from JSON objects and arrays manually, but it fails with an Error instead of an optional.

Example

let mapper = Mapper(json)

do {
    let name: String = try mapper.value("name")
} catch {}

let age: Int? = try? mapper.name("age")

do {
    let dateOfBirth: Date = try mapper.value("date_of_birth", using: DateFormatterTransform(dateFormatter: dateFormatter))
    let website: URL = try mapper.value("website", using: URLTransform())
    let gender: Gender = try mapper.value("gender", using: RawRepresentableTransform())
} catch {}

TODOs

• MappingError needs to provide actual information on what went wrong, such as the key, type, and line number.
• The current handling of nested JSON can be a little clunky -- you have to instantiate a new Mapper for each nested JSON object or array. You should be able to provide a dot-separated key to extract nested types.