CoreStore/Sources/SaveResult.swift

//
//  SaveResult.swift
//  CoreStore
//
//  Copyright © 2014 John Rommel Estropia
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in all
//  copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//  SOFTWARE.
//

import Foundation


// MARK: - SaveResult

@available(*, deprecated, message: "Use the new DataStack.perform(asynchronous:...) and DataStack.perform(synchronous:...) family of APIs")
public enum SaveResult: Hashable {
    
    case success(hasChanges: Bool)
    case failure(CoreStoreError)
    
    public var boolValue: Bool {
        
        switch self {
            
        case .success: return true
        case .failure: return false
        }
    }
    
    
    // MARK: Equatable
    
    public static func == (lhs: SaveResult, rhs: SaveResult) -> Bool {
        
        switch (lhs, rhs) {
            
        case (.success(let hasChanges1), .success(let hasChanges2)):
            return hasChanges1 == hasChanges2
            
        case (.failure(let error1), .failure(let error2)):
            return error1 == error2
            
        default:
            return false
        }
    }
    
    
    // MARK: Hashable
    
    public var hashValue: Int {
        
        switch self {
            
        case .success(let hasChanges):
            return self.boolValue.hashValue ^ hasChanges.hashValue
            
        case .failure(let error):
            return self.boolValue.hashValue ^ error.hashValue
        }
    }
    
    
    // MARK: Internal
    
    internal init(hasChanges: Bool) {
        
        self = .success(hasChanges: hasChanges)
    }
    
    internal init(_ error: CoreStoreError) {
        
        self = .failure(error)
    }
}