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NotGiven.scala
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NotGiven.scala
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/*
* Copyright (c) 2013 Functional Streams for Scala
*
* 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.
*/
package fs2.compat
// Scala 2 port of https://github.com/dotty-staging/dotty/blob/3217bc14a309718a79a4d7a99553664974a8d754/library/src-bootstrapped/scala/util/Not.scala
final class NotGiven[+A] private ()
private[compat] trait NotGivenLowPriority {
implicit def default[A]: NotGiven[A] = NotGiven.value
}
object NotGiven extends NotGivenLowPriority {
val value: NotGiven[Nothing] = new NotGiven[Nothing]
implicit def amb1[A](implicit ev: A): NotGiven[A] = ???
implicit def amb2[A](implicit ev: A): NotGiven[A] = ???
}