Iterate through structures and print all properties

Test.swift

import UIKit
import Foundation

protocol Printable {
    func getAllProperties() -> [String: Any]?
}

extension Printable {
    func getAllProperties() -> [String: Any]? {
        var result: [String: Any] = [:]
        let mirror = Mirror(reflecting: self)
        
        guard let style = mirror.displayStyle, style == .struct else {
            return nil // If not struct then return
        }
        
        for (property, value) in mirror.children {
            guard let property = property else {
                continue
            }
            result[property] = value
        }
        return result
    }
}

protocol CarMake: Printable {
    // Additional requirements
}

struct Mercedes: CarMake {
    var carBody = "Metal"
    var classType = "E-Class"
}

struct BMW: CarMake {
    var model = "BMW 750d"
    var bodyColor = "Phantom Black"
}

struct Volvo: CarMake {
    var modelName = "Volvo S90"
    var price = "$50000"
}


func getCarMake(with carMake: CarMake) {
    if let properties = carMake.getAllProperties() {
        print(properties)
    }
}

let mercedes = Mercedes()
let bmw = BMW()
let volvo = Volvo()

getCarMake(with: mercedes)
getCarMake(with: bmw)
getCarMake(with: volvo)