openide/java/java-tests/testData/inspection/dataFlow/fixture/CastToSealedInterface.java at 0afc6f78425bed026ebdeeeb20b9fa1ddca012bb - openide - Gitea

MDS/openide

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Artemiy Sartakovandintellij-monorepo-bot e35b38f161 Sealed classes: report narrow down conversion for sealed classes that have only sealed / final subclasses and don't have interface inheritors in hierarchy (IDEA-257414)

see JEP-397 - Sealed classes and conversions for details

GitOrigin-RevId: 297386ccd61f7762508b630a60894360215d9e11

2021-01-13 04:57:37 +00:00

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Java

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 class Foo {
   static void test(Foo foo) {
    if (<error descr="Inconvertible types; cannot cast 'Foo' to 'I'"><warning descr="Condition 'foo instanceof I' is always 'false'">foo instanceof I</warning></error>)
     System.out.println("This is a Foo");
    }
 }
 sealed interface I {}
 final class C implements I {}