Swift Russian Plural Form Function

PluralForm.swift

//
//  Orig created by youmee https://gist.github.com/youmee/bc23dd6088e59609609f
//  Modified by Лысенко Алексей Димитриевич on 09/09/2019.
//  Copyright © 2019 SMG All rights reserved.
//

import Foundation

@objc class Pluralizer: NSObject {
    @objc class PluralForms: NSObject {
        let one: String
        let two: String
        let many: String
        
        @objc init(_ one: String, _ two: String, _ many: String) {
            self.one = one
            self.two = two
            self.many = many
        }
    }
    
    /*
     pluralForm(28, forms: .init("год", "года", "лет"))
     output: "лет"
     */
    @objc static func pluralForm(number: Int, forms: PluralForms) -> String {
        return number % 10 == 1 && number % 100 != 11 ? forms.one :
            (number % 10 >= 2 && number % 10 <= 4 && (number % 100 < 10 || number % 100 >= 20) ? forms.two : forms.many)
    }
}