DictionaryRepresentable.swift

DictionaryRepresentable.swift

import Foundation

#if DEBUG
/// Describes a objects as a dictionary.
/// - Used for debugging or testing purpuses.
public protocol DictionaryRepresentable {}
public extension DictionaryRepresentable {
    func asDictionary() -> [String: Any] {
        var dictionary: [String: Any] = .init()
        
        let mirror = Mirror(reflecting: self)
        for child in mirror.children {
            if let label = child.label {
                if let nsObject = child.value as? NSObject {
                    dictionary[label] = nsObject.asDictionary()
                } else {
                    dictionary[label] = child.value
                }
            }
        }
        
        return dictionary
    }
}

fileprivate extension NSObject {
    func asDictionary() -> [String: Any] {
        var dictionary: [String: Any] = .init()
        var count: UInt32 = 0
        if let properties = class_copyPropertyList(type(of: self), &count) {
            for i in 0..<Int(count) {
                let property = properties[i]
                let name = String(cString: property_getName(property))
                if let value = value(forKey: name) {
                    dictionary[name] = value
                }
            }
            free(properties)
        }
        return dictionary
    }
}
#endif