66 lines
1.8 KiB
Swift
66 lines
1.8 KiB
Swift
//
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// BidirectionalState.swift
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// TunnelKit
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//
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// Created by Davide De Rosa on 9/9/18.
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// Copyright (c) 2018 Davide De Rosa. All rights reserved.
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//
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// https://github.com/keeshux
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//
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// This file is part of TunnelKit.
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//
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// TunnelKit is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// TunnelKit is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with TunnelKit. If not, see <http://www.gnu.org/licenses/>.
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//
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import Foundation
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/// A generic structure holding a pair of inbound/outbound states.
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public class BidirectionalState<T> {
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private let resetValue: T
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/// The inbound state.
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public var inbound: T
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/// The outbound state.
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public var outbound: T
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/**
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Returns current state as a pair.
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- Returns: Current state as a pair, inbound first.
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*/
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public var pair: (T, T) {
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return (inbound, outbound)
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}
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/**
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Inits state with a value that will later be reused by `reset()`.
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- Parameter value: The value to initialize with and reset to.
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*/
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public init(withResetValue value: T) {
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inbound = value
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outbound = value
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resetValue = value
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}
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/**
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Resets state to the value provided with `init(withResetValue:)`.
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*/
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public func reset() {
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inbound = resetValue
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outbound = resetValue
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}
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}
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