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[FE] Introduce warnings on possible empty intersection types, and improve errors reporting in general

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^KT-52361 Fixed
This commit is contained in:
Victor Petukhov
2022-05-23 10:10:59 +02:00
committed by teamcity
parent e133ee3765
commit 6a34b184ac
53 changed files with 501 additions and 335 deletions
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core/descriptors/src/org/jetbrains/kotlin/types/checker/ClassicTypeSystemContext.kt
+6
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@@ -305,6 +305,12 @@ interface ClassicTypeSystemContext : TypeSystemInferenceExtensionContext, TypeSy
return DescriptorUtils.isInterface(declarationDescriptor)
}
override fun TypeConstructorMarker.isFinalClassConstructor(): Boolean {
require(this is TypeConstructor, this::errorMessage)
val classDescriptor = declarationDescriptor as? ClassDescriptor ?: return false
return classDescriptor.isFinalClass
}
override fun TypeConstructorMarker.isCommonFinalClassConstructor(): Boolean {
require(this is TypeConstructor, this::errorMessage)
val classDescriptor = declarationDescriptor as? ClassDescriptor ?: return false