69 lines
2.1 KiB
Swift
69 lines
2.1 KiB
Swift
//
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// Utils+Async.swift
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// Passepartout
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//
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// Created by Davide De Rosa on 2/25/22.
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// Copyright (c) 2023 Davide De Rosa. All rights reserved.
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//
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// https://github.com/passepartoutvpn
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//
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// This file is part of Passepartout.
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//
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// Passepartout 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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// Passepartout 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 Passepartout. If not, see <http://www.gnu.org/licenses/>.
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//
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import Combine
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import Foundation
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// https://medium.com/geekculture/from-combine-to-async-await-c08bf1d15b77
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enum AsyncPublisherError: Error {
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case discarded
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}
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extension Publisher {
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public func async() async throws -> Output {
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try await withCheckedThrowingContinuation { continuation in
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var cancellable: AnyCancellable?
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var isResumed = false
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cancellable = first()
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.sink { result in
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switch result {
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case .finished:
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if !isResumed {
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continuation.resume(with: .failure(AsyncPublisherError.discarded))
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}
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case let .failure(error):
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continuation.resume(throwing: error)
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}
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cancellable?.cancel()
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} receiveValue: { value in
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continuation.resume(with: .success(value))
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isResumed = true
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}
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}
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}
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}
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extension Task where Success == Never, Failure == Never {
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public static func maybeWait(forMilliseconds msec: Int?) async {
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guard let msec = msec else {
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return
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}
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try? await sleep(nanoseconds: UInt64(msec) * NSEC_PER_MSEC)
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}
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}
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