NSPredicate.swift

//
//  NSPredicate.swift
//  Nighthawk
//
//  Created by Nathan Lawrence on 8/3/19.
//  Copyright © 2019 Nathan Lawrence. All rights reserved.
//

import Foundation

extension NSPredicate {
    convenience init(regex: String) {
        self.init(format: "SELF MATCHES %@", regex)
    }
    
    func or(_ secondaryPredicate: NSPredicate) -> NSCompoundPredicate{
        return NSCompoundPredicate(
            type: .or,
            subpredicates: [
                self,
                secondaryPredicate])
    }
    
    func and(_ secondaryPredicate: NSPredicate) -> NSCompoundPredicate{
        return NSCompoundPredicate(
            type: .or,
            subpredicates: [
                self,
                secondaryPredicate])
    }
    
    func not() -> NSCompoundPredicate{
        return NSCompoundPredicate(
            type: .not,
            subpredicates: [self])
    }
}