reflection_test.swift

#!/usr/bin/env cato 1.2

import Foundation

class OptCls: NSObject {
  dynamic var s: String?
  dynamic var nos: String = ""
  dynamic var nss: NSString?
  dynamic var ius: String!
  dynamic var i: Int = 0
  dynamic var o = NSObject()
  dynamic var oo: OptCls?
}

extension Optional {
  var getT: Any.Type {
    println("\(T.self)")
    return T.self
  }
}

func getOptionalPropertyNames(object: AnyObject) -> NSDictionary {
    let reflection = reflect(object)

    var properties = [String:String]()

    // Skip the first property (super):
    // super is an implicit property on Swift objects
    for i in 1..<reflection.count {
        println("reflection: \(reflection[i])")
        // let prop = class_getProperty(object.dynamicType, reflection[i].0)
        // println(String.fromCString(property_getAttributes(prop)))
        let mirror = reflection[i].1
        let valueType = mirror.valueType
        println("value type: \(valueType)")
        if mirror.disposition == .Optional {
            properties[reflection[i].0] = toString(valueType)
        }
        println()
    }

    return properties
}

let props = getOptionalPropertyNames(OptCls())
println(props)