27 lines
875 B
Scala
27 lines
875 B
Scala
/**
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* Copyright (C) 2015 Typesafe Inc. <http://www.typesafe.com>
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*/
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package akka.stream.impl
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import akka.japi.function.{ Function ⇒ JFun, Function2 ⇒ JFun2 }
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import akka.japi.{ Pair ⇒ JPair }
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private[akka] object ConstantFun {
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private[this] val JavaIdentityFunction = new JFun[Any, Any] {
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@throws(classOf[Exception]) override def apply(param: Any): Any = param
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}
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val JavaPairFunction = new JFun2[AnyRef, AnyRef, AnyRef JPair AnyRef] {
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def apply(p1: AnyRef, p2: AnyRef): AnyRef JPair AnyRef = JPair(p1, p2)
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}
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def javaCreatePairFunction[A, B]: JFun2[A, B, JPair[A, B]] = JavaPairFunction.asInstanceOf[JFun2[A, B, JPair[A, B]]]
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def javaIdentityFunction[T]: JFun[T, T] = JavaIdentityFunction.asInstanceOf[JFun[T, T]]
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def scalaIdentityFunction[T]: T ⇒ T = conforms
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def returnZero[T](t: T): Long = 0L
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def returnOne[T](t: T): Long = 1L
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}
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