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Consider intersection with ILT subtype of ILT

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This commit is contained in:
Victor Petukhov
2020-09-07 17:46:46 +03:00
parent 7bd9c52732
commit 140edb2215
1 changed files with 16 additions and 4 deletions
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core/compiler.common/src/org/jetbrains/kotlin/types/AbstractTypeChecker.kt
+16 -4
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@@ -235,28 +235,40 @@ object AbstractTypeChecker {
return isSubtypeOfForSingleClassifierType(subType.lowerBoundIfFlexible(), superType.upperBoundIfFlexible())
}
private fun AbstractTypeCheckerContext.checkSubtypeForIntegerLiteralType(subType: SimpleTypeMarker, superType: SimpleTypeMarker): Boolean? {
private fun AbstractTypeCheckerContext.checkSubtypeForIntegerLiteralType(
subType: SimpleTypeMarker,
superType: SimpleTypeMarker
): Boolean? {
if (!subType.isIntegerLiteralType() && !superType.isIntegerLiteralType()) return null
fun typeInIntegerLiteralType(integerLiteralType: SimpleTypeMarker, type: SimpleTypeMarker, checkSupertypes: Boolean): Boolean =
fun isTypeInIntegerLiteralType(integerLiteralType: SimpleTypeMarker, type: SimpleTypeMarker, checkSupertypes: Boolean): Boolean =
integerLiteralType.possibleIntegerTypes().any { possibleType ->
(possibleType.typeConstructor() == type.typeConstructor()) || (checkSupertypes && isSubtypeOf(this, type, possibleType))
}
fun isIntegerLiteralTypeInIntersectionComponents(type: SimpleTypeMarker): Boolean {
val typeConstructor = type.typeConstructor()
return typeConstructor is IntersectionTypeConstructorMarker
&& typeConstructor.supertypes().any { it.asSimpleType()?.isIntegerLiteralType() == true }
}
when {
subType.isIntegerLiteralType() && superType.isIntegerLiteralType() -> {
return true
}
subType.isIntegerLiteralType() -> {
if (typeInIntegerLiteralType(subType, superType, checkSupertypes = false)) {
if (isTypeInIntegerLiteralType(subType, superType, checkSupertypes = false)) {
return true
}
}
superType.isIntegerLiteralType() -> {
// Here we also have to check supertypes for intersection types: { Int & String } <: IntegerLiteralTypes
if (typeInIntegerLiteralType(superType, subType, checkSupertypes = true)) {
if (isIntegerLiteralTypeInIntersectionComponents(subType)
|| isTypeInIntegerLiteralType(superType, subType, checkSupertypes = true)
) {
return true
}
}