kotlin.reflect.KVariance.kt Maven / Gradle / Ivy
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/*
* Copyright 2010-2016 JetBrains s.r.o.
*
* 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 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,
}