Regex(with String Extension) Swift4.0

Regex+StringExtension.swift

import AVFoundation

extension String {
  
  //한글 검증
  func isHangul() -> Bool {
    
    let regEx = "^[가-힣0-9]+$"
    
    let emailTest = NSPredicate(format:"SELF MATCHES[c] %@", regEx)
    return emailTest.evaluate(with: self)
  }
  
  //이메일 검증
  func isEmailValid() -> Bool {
    let emailRegEx = "(?:[a-z0-9!#$%\\&'*+/=?\\^_`{|}~-]+(?:\\.[a-z0-9!#$%\\&'*+/=?\\^_`{|}"+"~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\"+"x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")@(?:(?:[a-z0-9](?:[a-"+"z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:(?:25[0-5"+"]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-"+"9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21"+"-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])"
    
    let emailTest = NSPredicate(format:"SELF MATCHES[c] %@", emailRegEx)
    return emailTest.evaluate(with: self)
  }
  
  //폰번호 검증
  func isTelNumberValid() -> Bool {
    let PHONE_REGEX = "^\\d{3}\\d{4}\\d{4}$"
    let phoneTest = NSPredicate(format: "SELF MATCHES %@", PHONE_REGEX)
    return phoneTest.evaluate(with: self)

  }
  
}