gistfile1.swift

import UIKit

public struct CocoStringAttributeHolder {
    
    internal let key: NSAttributedString.Key
    internal let value: Any
    internal let range: Range<String.Index>?
    
    fileprivate init(key: NSAttributedString.Key, value: Any, range: Range<String.Index>?) {
        self.key = key
        self.value = value
        self.range = range
    }
}

extension CocoStringAttributeHolder {
    
    public static func attribute(key: NSAttributedString.Key, value: Any) -> Self {
        .init(key: key, value: value, range: nil)
    }
    
    public static func rangedAttribute(key: NSAttributedString.Key, value: Any, range: Range<String.Index>) -> Self {
        .init(key: key, value: value, range: range)
    }
}