LeadKit/Sources/Extensions/Rx/PrimitiveSequence/Completable/Completable+DeferredJust.swift

45 lines
1.9 KiB
Swift

//
// Copyright (c) 2018 Touch Instinct
//
// 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 RxSwift
public extension PrimitiveSequence where Trait == CompletableTrait {
/// Returns an single that invokes the specified factory function whenever a new observer subscribes.
///
/// - Parameter workUnit: Element factory function to invoke for each observer
/// that subscribes to the resulting sequence.
/// - Returns: A single whose observers trigger an invocation of the given element factory function.
static func deferredJust(_ workUnit: @escaping ThrowableVoidBlock) -> Completable {
.create { observer in
do {
try workUnit()
observer(.completed)
} catch {
observer(.error(error))
}
return Disposables.create()
}
}
}