Denis.Zharkov
644391a8e0
In that case, when loading Java, we just remember the name of `@Nonnull` argument (javax.annotation.meta.When), and then use it during enhancement ^KT-56656 Fixed
58 lines
1.9 KiB
Kotlin
Vendored
58 lines
1.9 KiB
Kotlin
Vendored
// FIR_IDENTICAL
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// FULL_JDK
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// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
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// ISSUE: KT-56656
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// FILE: ParametricNullness.java
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import static java.lang.annotation.ElementType.FIELD;
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import static java.lang.annotation.ElementType.METHOD;
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import static java.lang.annotation.ElementType.PARAMETER;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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@Target({FIELD, METHOD, PARAMETER})
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@javax.annotation.meta.TypeQualifierNickname
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@javax.annotation.Nonnull(when = javax.annotation.meta.When.UNKNOWN)
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@interface ParametricNullness {}
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// FILE: ElementTypesAreNonnullByDefault.java
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import static java.lang.annotation.ElementType.FIELD;
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import static java.lang.annotation.ElementType.METHOD;
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import static java.lang.annotation.ElementType.PARAMETER;
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import static java.lang.annotation.ElementType.TYPE;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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import javax.annotation.Nonnull;
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import javax.annotation.meta.TypeQualifierDefault;
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/**
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* Marks all "top-level" types as non-null in a way that is recognized by Kotlin. Note that this
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* unfortunately includes type-variable usages, so we also provide {@link ParametricNullness} to
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* "undo" it as best we can.
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*/
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@Retention(RUNTIME)
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@Target(TYPE)
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@TypeQualifierDefault({FIELD, METHOD, PARAMETER})
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@Nonnull
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@interface ElementTypesAreNonnullByDefault {}
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// FILE: MyFunction.java
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import javax.annotation.CheckForNull;
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import org.checkerframework.checker.nullness.qual.Nullable;
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@ElementTypesAreNonnullByDefault
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public interface MyFunction<F extends @Nullable Object, T extends @Nullable Object> extends java.util.function.Function<F, T> {
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@Override
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@ParametricNullness
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T apply (@ParametricNullness F input);
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}
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// FILE: main.kt
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class A : MyFunction<String?, String?> {
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override fun apply(x: String?): String? = ""
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}
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