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[common] fix flexible type approximation in renders

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^KTIJ-3030 Fixed

(cherry picked from commit 4855d88a9f6fbce9aeeea6fe1f29dd099a833aed)

KT-CR-2373
This commit is contained in:
Dmitry Gridin
2021-03-05 21:24:26 +07:00
committed by Nikita Bobko
parent 958b0ff24a
commit a8a6f51a0e
1 changed files with 12 additions and 6 deletions
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18
plugins/scripting/scripting-ide-common/src/org/jetbrains/kotlin/idea/util/TypeUtils.kt
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@@ -32,7 +32,9 @@ private fun KotlinType.approximateNonDynamicFlexibleTypes(
if (isFlexible()) {
val flexible = asFlexibleType()
val lowerClass = flexible.lowerBound.constructor.declarationDescriptor as? ClassDescriptor?
val lowerBound = flexible.lowerBound
val upperBound = flexible.upperBound
val lowerClass = lowerBound.constructor.declarationDescriptor as? ClassDescriptor?
val isCollection = lowerClass != null && JavaToKotlinClassMapper.isMutable(lowerClass)
// (Mutable)Collection<T>! -> MutableCollection<T>?
// Foo<(Mutable)Collection<T>!>! -> Foo<Collection<T>>?
@@ -40,17 +42,21 @@ private fun KotlinType.approximateNonDynamicFlexibleTypes(
// Foo<Bar!>! -> Foo<Bar>?
var approximation =
if (isCollection)
flexible.lowerBound.makeNullableAsSpecified(!preferNotNull)
else
if (this is RawType && preferStarForRaw) flexible.upperBound.makeNullableAsSpecified(!preferNotNull)
// (Mutable)Collection<T>!
if (lowerBound.isMarkedNullable != upperBound.isMarkedNullable)
lowerBound.makeNullableAsSpecified(!preferNotNull)
else
if (preferNotNull) flexible.lowerBound else flexible.upperBound
lowerBound
else
if (this is RawType && preferStarForRaw) upperBound.makeNullableAsSpecified(!preferNotNull)
else
if (preferNotNull) lowerBound else upperBound
approximation = approximation.approximateNonDynamicFlexibleTypes()
approximation = if (nullability() == TypeNullability.NOT_NULL) approximation.makeNullableAsSpecified(false) else approximation
if (approximation.isMarkedNullable && !flexible.lowerBound
if (approximation.isMarkedNullable && !lowerBound
.isMarkedNullable && TypeUtils.isTypeParameter(approximation) && TypeUtils.hasNullableSuperType(approximation)
) {
approximation = approximation.makeNullableAsSpecified(false)