//

// UnicodeScalar.swift

// SwiftSoup

//

// Created by Nabil Chatbi on 14/11/16.

// Copyright © 2016 Nabil Chatbi. All rights reserved.

//

import Foundation

private let uppercaseSet = CharacterSet.uppercaseLetters

private let lowercaseSet = CharacterSet.lowercaseLetters

private let alphaSet = CharacterSet.letters

private let alphaNumericSet = CharacterSet.alphanumerics

private let symbolSet = CharacterSet.symbols

private let digitSet = CharacterSet.decimalDigits

extension UnicodeScalar {

public static let Ampersand: UnicodeScalar = "&"

public static let LessThan: UnicodeScalar = "<"

public static let GreaterThan: UnicodeScalar = ">"

public static let Space: UnicodeScalar = " "

public static let BackslashF: UnicodeScalar = UnicodeScalar(12)

public static let BackslashT: UnicodeScalar = "\t"

public static let BackslashN: UnicodeScalar = "\n"

public static let BackslashR: UnicodeScalar = "\r"

public static let Slash: UnicodeScalar = "/"

public static let FormFeed: UnicodeScalar = "\u{000B}"// Form Feed

public static let VerticalTab: UnicodeScalar = "\u{000C}"// vertical tab

func isMemberOfCharacterSet(_ set: CharacterSet) -> Bool {

return set.contains(self)

}

/// True for any space character, and the control characters \t, \n, \r, \f, \v.

var isWhitespace: Bool {

}

/// `true` if `self` normalized contains a single code unit that is in the categories of Uppercase and Titlecase Letters.

var isUppercase: Bool {

return isMemberOfCharacterSet(uppercaseSet)

}

/// `true` if `self` normalized contains a single code unit that is in the category of Lowercase Letters.

var isLowercase: Bool {

return isMemberOfCharacterSet(lowercaseSet)

}

var uppercase: UnicodeScalar {

let str = String(self).uppercased()

return str.unicodeScalar(0)

}