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[FIR][checkers] Respect ClassKind.INTERFACE in FirRegularClass.canHaveAbstractDeclaration

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A Kotlin interface can have abstract members regardless of its modality. However, this invariant was previously ignored by FIR checkers. As a result, false-positive `ABSTRACT_<MEMBER>_IN_NON_ABSTRACT_CLASS` errors were being reported in explicitly non-abstract interfaces.

This commit makes a relevant FIR utility used by relevant FIR checkers aware of the aforementioned invariant.

#KT-66260 Fixed
This commit is contained in:
Stanislav Ruban
2024-03-01 14:17:47 +02:00
committed by Space Team
parent e0b83def00
commit 2de0e4b8d2
4 changed files with 3 additions and 17 deletions
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compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/utils/FirStatusUtils.kt
+1 -1
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@@ -62,7 +62,7 @@ inline val FirClass.isEnumClass: Boolean
inline val FirRegularClass.isSealed: Boolean get() = status.modality == Modality.SEALED
inline val FirRegularClass.canHaveAbstractDeclaration: Boolean
get() = isAbstract || isSealed || isEnumClass
get() = isInterface || isAbstract || isSealed || isEnumClass
inline val FirRegularClass.isCompanion: Boolean get() = status.isCompanion
inline val FirRegularClass.isData: Boolean get() = status.isData