//
//  StyledTextKitRenderCacheKey.swift
//  StyledTextKit
//
//  Created by Ryan Nystrom on 12/14/17.
//  Copyright © 2017 Ryan Nystrom. All rights reserved.
//

import UIKit

internal struct StyledTextRenderCacheKey: Hashable, Equatable {

    let width: CGFloat
    let attributedText: NSAttributedString
    let backgroundColor: UIColor?
    let maximumNumberOfLines: Int?

    // MARK: Hashable

    var hashValue: Int {
        return width
            .combineHash(with: attributedText)
    }

    // MARK: Equatable

    public static func ==(lhs: StyledTextRenderCacheKey, rhs: StyledTextRenderCacheKey) -> Bool {
        return lhs.width == rhs.width
            && lhs.attributedText == rhs.attributedText
            && lhs.backgroundColor == rhs.backgroundColor
            && lhs.maximumNumberOfLines == rhs.maximumNumberOfLines
    }

}