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Dmitry Timofeev
e27e45f867
Starting from 1.6.20, passing nullable arguments of generic types (`T`)
to the Java methods where the corresponding arguments are annotated with
`@NotNull` causes warnings (they are to be replaced with errors in
future releases, see KT-36770 for details):
* NULLABLE_TYPE_PARAMETER_AGAINST_NOT_NULL_TYPE_PARAMETER
* WRONG_NULLABILITY_FOR_JAVA_OVERRIDE.
This quick fix allows users to fix most cases of these warnings by
adding a non-nullable upper bound to the type parameter in question.
If the parameter has no upper bound, the `Any` upper bound is added:
`fun <T> foo() { … }` → `fun <T : Any> foo() { … }`
If the type parameter already has an explicitly nullable upper bound,
this bound is replaced with its non-nullable subtype:
`fun <T : Foo?> foo() { … }` → `fun <T : Foo> foo() { … }`
The quick fix provides actions for TYPE_MISMATCH and NOTHING_TO_OVERRIDE
errors that the compiler generates instead of nullability warnings If
loading of `@NotNull` Java values as definitely non-nullable types is
enabled.
^KTIJ-20557 Fixed
(cherry picked from commit 12fe8257c052574488e44147aaa09d646c4f7204)
GitOrigin-RevId: 79e445a8e47feb6fc8e7a5f9eda637a38237477f
7 lines
163 B
Kotlin
7 lines
163 B
Kotlin
// "Add 'Any' as upper bound for T to make it non-nullable" "true"
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// LANGUAGE_VERSION: 1.6
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class FooChild<T> : Foo<T>() {
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override<caret> fun foo(x: T) {}
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}
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