.kotlin.kotlin-compiler.1.3.11.source-code.inlineClassesUtils.kt Maven / Gradle / Ivy
/*
* Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
* that can be found in the license/LICENSE.txt file.
*/
package org.jetbrains.kotlin.resolve
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
import org.jetbrains.kotlin.descriptors.PropertyDescriptor
import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
import org.jetbrains.kotlin.incremental.components.NoLookupLocation
import org.jetbrains.kotlin.types.KotlinType
import org.jetbrains.kotlin.types.TypeUtils
import org.jetbrains.kotlin.utils.addToStdlib.safeAs
fun ClassDescriptor.underlyingRepresentation(): ValueParameterDescriptor? {
if (!isInline) return null
return unsubstitutedPrimaryConstructor?.valueParameters?.singleOrNull()
}
fun DeclarationDescriptor.isInlineClass() = this is ClassDescriptor && this.isInline
fun KotlinType.unsubstitutedUnderlyingParameter(): ValueParameterDescriptor? {
return constructor.declarationDescriptor.safeAs()?.underlyingRepresentation()
}
fun KotlinType.unsubstitutedUnderlyingType(): KotlinType? = unsubstitutedUnderlyingParameter()?.type
fun KotlinType.isInlineClassType(): Boolean = constructor.declarationDescriptor?.isInlineClass() ?: false
fun KotlinType.substitutedUnderlyingType(): KotlinType? {
val parameter = unsubstitutedUnderlyingParameter() ?: return null
return memberScope.getContributedVariables(parameter.name, NoLookupLocation.FOR_ALREADY_TRACKED).singleOrNull()?.type
}
fun KotlinType.isRecursiveInlineClassType() =
isRecursiveInlineClassTypeInner(hashSetOf())
private fun KotlinType.isRecursiveInlineClassTypeInner(visited: HashSet): Boolean {
val descriptor = constructor.declarationDescriptor as? ClassDescriptor ?: return false
if (visited.contains(descriptor)) return true
if (!descriptor.isInlineClass()) return false
visited.add(descriptor)
return unsubstitutedUnderlyingType()?.isRecursiveInlineClassTypeInner(visited) ?: false
}
fun KotlinType.isNullableUnderlyingType(): Boolean {
if (!isInlineClassType()) return false
val underlyingType = unsubstitutedUnderlyingType() ?: return false
return TypeUtils.isNullableType(underlyingType)
}
fun PropertyDescriptor.isUnderlyingPropertyOfInlineClass(): Boolean {
val containingDeclaration = this.containingDeclaration
if (!containingDeclaration.isInlineClass()) return false
return (containingDeclaration as ClassDescriptor).underlyingRepresentation()?.name == this.name
}