monifu.reactive.internals.builders.unit.scala Maven / Gradle / Ivy
/*
* Copyright (c) 2014-2015 by its authors. Some rights reserved.
* See the project homepage at: http://www.monifu.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package monifu.reactive.internals.builders
import monifu.reactive.Observable
import monifu.reactive.internals._
import scala.concurrent.duration.FiniteDuration
private[reactive] object unit {
/**
* Implementation for [[Observable.unit]].
*/
def one[A](elem: A): Observable[A] =
Observable.create { s =>
s.observer.onNext(elem)
.onContinueSignalComplete(s.observer)(s.scheduler)
}
/**
* Implementation for [[Observable.unitDelayed]].
*/
def oneDelayed[A](delay: FiniteDuration, elem: A): Observable[A] =
Observable.create { s =>
s.scheduler.scheduleOnce(delay) {
s.observer.onNext(elem)
.onContinueSignalComplete(s.observer)(s.scheduler)
}
}
/**
* Implementation for [[Observable.empty]].
*/
def empty: Observable[Nothing] =
Observable.create(_.observer.onComplete())
/**
* Implementation for [[Observable.error]].
*/
def error(ex: Throwable): Observable[Nothing] =
Observable.create(_.observer.onError(ex))
/**
* Implementation for [[Observable.never]].
*/
def never: Observable[Nothing] =
Observable.create { _ => () }
}