ARTICLE Function Composing Swift 2.0 - 2

article-function-composing-2.swift

enum JSONParseError : ErrorType {
    case InvalideJSON
    case UnexpectedCharacter(line: Int, column: Int)
}

enum ServerResponseError : ErrorType {
    case InvalidResponse
    case ErrorResponse(message: String)
}

enum UnmarshalResponseError : ErrorType {
    case InvalidResponse
    case ErrorResponse
}

func parseJSONFromNSData(data: NSData) throws -> JSON { ... }

func validateJSONResponse(json: JSON) throws -> JSON { ... }

func unmarshalJSON<T : Unmarshallable>(json: JSON, type: T.Type) throws -> T { ... }