205a538df3
* !str #22527 fix SubSource/SubFlow.zip Pair type * =act don't use conforms, be scala 2.13 friendly * Update SubFlow.scala
40 lines
1.2 KiB
Scala
40 lines
1.2 KiB
Scala
/**
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* Copyright (C) 2015-2017 Lightbend Inc. <http://www.lightbend.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.asInstanceOf[Function[T, T]]
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def scalaAnyToNone[A, B]: A ⇒ Option[B] = none
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def scalaAnyTwoToNone[A, B, C]: (A, B) ⇒ Option[C] = two2none
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def javaAnyToNone[A, B]: A ⇒ Option[B] = none
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val conforms = (a: Any) ⇒ a
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val zeroLong = (_: Any) ⇒ 0L
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val oneLong = (_: Any) ⇒ 1L
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val oneInt = (_: Any) ⇒ 1
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val none = (_: Any) ⇒ None
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val two2none = (_: Any, _: Any) ⇒ None
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}
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