66 lines
1.8 KiB
Swift
66 lines
1.8 KiB
Swift
//
|
|
// BidirectionalState.swift
|
|
// TunnelKit
|
|
//
|
|
// Created by Davide De Rosa on 9/9/18.
|
|
// Copyright (c) 2021 Davide De Rosa. All rights reserved.
|
|
//
|
|
// https://github.com/passepartoutvpn
|
|
//
|
|
// This file is part of TunnelKit.
|
|
//
|
|
// TunnelKit is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// TunnelKit is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with TunnelKit. If not, see <http://www.gnu.org/licenses/>.
|
|
//
|
|
|
|
import Foundation
|
|
|
|
/// A generic structure holding a pair of inbound/outbound states.
|
|
public class BidirectionalState<T> {
|
|
private let resetValue: T
|
|
|
|
/// The inbound state.
|
|
public var inbound: T
|
|
|
|
/// The outbound state.
|
|
public var outbound: T
|
|
|
|
/**
|
|
Returns current state as a pair.
|
|
|
|
- Returns: Current state as a pair, inbound first.
|
|
*/
|
|
public var pair: (T, T) {
|
|
return (inbound, outbound)
|
|
}
|
|
|
|
/**
|
|
Inits state with a value that will later be reused by `reset()`.
|
|
|
|
- Parameter value: The value to initialize with and reset to.
|
|
*/
|
|
public init(withResetValue value: T) {
|
|
inbound = value
|
|
outbound = value
|
|
resetValue = value
|
|
}
|
|
|
|
/**
|
|
Resets state to the value provided with `init(withResetValue:)`.
|
|
*/
|
|
public func reset() {
|
|
inbound = resetValue
|
|
outbound = resetValue
|
|
}
|
|
}
|