kotlin.reflect.KVariance.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
*/
package kotlin.reflect
/**
* Represents variance applied to a type parameter on the declaration site (*declaration-site variance*),
* or to a type in a projection (*use-site variance*).
*
* See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/generics.html#variance)
* for more information.
*
* @see [KTypeParameter.variance]
* @see [KTypeProjection]
*/
@SinceKotlin("1.1")
enum class KVariance {
/**
* The affected type parameter or type is *invariant*, which means it has no variance applied to it.
*/
INVARIANT,
/**
* The affected type parameter or type is *contravariant*. Denoted by the `in` modifier in the source code.
*/
IN,
/**
* The affected type parameter or type is *covariant*. Denoted by the `out` modifier in the source code.
*/
OUT,
}