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KtFe10ImportOptimizer.kt
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KtFe10ImportOptimizer.kt
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/*
* Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
* 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.analysis.api.descriptors.components
import org.jetbrains.kotlin.analysis.api.components.KtImportOptimizer
import org.jetbrains.kotlin.analysis.api.components.KtImportOptimizerResult
import org.jetbrains.kotlin.analysis.api.descriptors.KtFe10AnalysisSession
import org.jetbrains.kotlin.analysis.api.descriptors.components.base.Fe10KtAnalysisSessionComponent
import org.jetbrains.kotlin.analysis.api.descriptors.symbols.base.KtFe10Symbol
import org.jetbrains.kotlin.analysis.api.descriptors.symbols.descriptorBased.base.getSymbolDescriptor
import org.jetbrains.kotlin.analysis.api.lifetime.KtLifetimeToken
import org.jetbrains.kotlin.analysis.api.lifetime.withValidityAssertion
import org.jetbrains.kotlin.analysis.api.symbols.KtSymbol
import org.jetbrains.kotlin.descriptors.CallableDescriptor
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.descriptors.ClassKind
import org.jetbrains.kotlin.descriptors.ClassifierDescriptorWithTypeParameters
import org.jetbrains.kotlin.descriptors.ConstructorDescriptor
import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
import org.jetbrains.kotlin.descriptors.PackageViewDescriptor
import org.jetbrains.kotlin.descriptors.TypeAliasDescriptor
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.psi.*
import org.jetbrains.kotlin.resolve.DescriptorUtils
import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
import org.jetbrains.kotlin.resolve.descriptorUtil.getImportableDescriptor
internal class KtFe10ImportOptimizer(
override val analysisSession: KtFe10AnalysisSession,
) : KtImportOptimizer(), Fe10KtAnalysisSessionComponent {
override val token: KtLifetimeToken
get() = analysisSession.token
override fun analyseImports(file: KtFile): KtImportOptimizerResult = withValidityAssertion {
error("FE10 implementation of KtImportOptimizer should not be called from anywhere")
}
override fun getImportableName(symbol: KtSymbol): FqName? {
require(symbol is KtFe10Symbol)
val descriptor = getSymbolDescriptor(symbol)
if (descriptor?.canBeReferencedViaImport() != true) return null
return descriptor.getImportableDescriptor().fqNameSafe
}
/**
* Copy of `org.jetbrains.kotlin.idea.imports.ImportsUtils.canBeReferencedViaImport`.
*/
private fun DeclarationDescriptor.canBeReferencedViaImport(): Boolean {
if (this is PackageViewDescriptor ||
DescriptorUtils.isTopLevelDeclaration(this) ||
this is CallableDescriptor && DescriptorUtils.isStaticDeclaration(this)
) {
return !name.isSpecial
}
//Both TypeAliasDescriptor and ClassDescriptor
val parentClassifier = containingDeclaration as? ClassifierDescriptorWithTypeParameters ?: return false
if (!parentClassifier.canBeReferencedViaImport()) return false
return when (this) {
is ConstructorDescriptor -> !parentClassifier.isInner // inner class constructors can't be referenced via import
is ClassDescriptor, is TypeAliasDescriptor -> true
else -> parentClassifier is ClassDescriptor && parentClassifier.kind == ClassKind.OBJECT
}
}
}