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A default protocol implementation for CustomDebugStringConvertible that uses Mirror for introspection. This is meant for debugging only.
public extension CustomDebugStringConvertible {
var debugDescription: String {
return debugDescription()
}
func debugDescription(indentationLevel: Int = 0) -> String {
let indentString = (0..<indentationLevel).reduce("") { tabs, _ in tabs + "\t" }
var s = "\(self.dynamicType)"
let mirror = Mirror(reflecting: self)
let children = mirror.children
if children.count == 0 {
return "\(s) = \(debugDescription),"
}
s += " {"
s = children.reduce(s) {
reducedString, child in
if let aChild = child.1 as? CustomDebugStringConvertible {
let childDescription = aChild.debugDescription(indentationLevel + 1)
return reducedString + "\n\(indentString)\t\(child.0!): \(childDescription)"
} else {
return reducedString + "\n\(indentString)\t\(child.0!): \(child.1),"
}
}
s = s.substringToIndex(s.characters.endIndex.predecessor())
s += "\n\(indentString)}"
return s
}
}
// Sample usage
/*
struct Person: CustomDebugStringConvertible {
let name: String
let address: Address
let children: [Person]?
}
struct Address: CustomDebugStringConvertible {
let city: String
let state: String
let zip: String
let streetNumber: String
let streetName: String
let suiteNumber: String?
let randomNumber: Int
init(city: String, state: String, zip: String, streetNumber: String, streetName: String, suiteNumber: String? = nil) {
self.city = city
self.state = state
self.zip = zip
self.streetNumber = streetNumber
self.streetName = streetName
self.suiteNumber = suiteNumber
self.randomNumber = Int(arc4random_uniform(1000))
}
}
let address = Address(city: "Lehi", state: "UT", zip: "84043", streetNumber: "123", streetName: "Fake st")
//print(address)
let child = Person(name: "joe", address: address, children: nil)
let person = Person(name: "matt", address: address, children: [child])
print(person)
*/
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