48 lines
1.8 KiB
Swift
48 lines
1.8 KiB
Swift
//
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// Copyright (c) 2022 Touch Instinct
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the Software), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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import Foundation
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public extension Operation {
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var flattenDependencies: [Operation] {
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dependencies.flatMap { $0.flattenDependencies } + dependencies
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}
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var leafDependencies: [Operation] {
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guard !dependencies.isEmpty else {
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return [self]
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}
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return dependencies.flatMap { $0.leafDependencies }
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}
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func beforeAll(add startOperation: Operation) {
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for leafDependency in leafDependencies {
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leafDependency.addDependency(startOperation)
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}
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}
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func add(to operationQueue: OperationQueue, waitUntilFinished: Bool = false) {
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operationQueue.addOperations(flattenDependencies + [self], waitUntilFinished: waitUntilFinished)
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}
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}
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