org.jetbrains.kotlin.resolve.deprecation.DeprecationResolver.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2018 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.resolve.deprecation
import org.jetbrains.kotlin.builtins.KotlinBuiltIns
import org.jetbrains.kotlin.builtins.StandardNames
import org.jetbrains.kotlin.config.*
import org.jetbrains.kotlin.descriptors.*
import org.jetbrains.kotlin.descriptors.impl.DescriptorDerivedFromTypeAlias
import org.jetbrains.kotlin.descriptors.impl.TypeAliasConstructorDescriptor
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.psi.Call
import org.jetbrains.kotlin.psi.KtElement
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlin.resolve.SinceKotlinAccessibility
import org.jetbrains.kotlin.resolve.calls.checkers.isOperatorMod
import org.jetbrains.kotlin.resolve.calls.checkers.shouldWarnAboutDeprecatedModFromBuiltIns
import org.jetbrains.kotlin.resolve.checkSinceKotlinVersionAccessibility
import org.jetbrains.kotlin.resolve.checkers.OptInUsageChecker
import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedClassDescriptor
import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedMemberDescriptor
import org.jetbrains.kotlin.storage.MemoizedFunctionToNotNull
import org.jetbrains.kotlin.storage.StorageManager
import org.jetbrains.kotlin.types.KotlinType
import org.jetbrains.kotlin.types.TypeUtils
import org.jetbrains.kotlin.utils.SmartList
import kotlin.contracts.ExperimentalContracts
import kotlin.contracts.contract
class DeprecationResolver(
storageManager: StorageManager,
private val languageVersionSettings: LanguageVersionSettings,
private val deprecationSettings: DeprecationSettings
) {
private val deprecations: MemoizedFunctionToNotNull =
storageManager.createMemoizedFunction { descriptor ->
computeDeprecation(descriptor)
}
private fun computeDeprecation(descriptor: DeclarationDescriptor): DeprecationInfo {
val deprecations = descriptor.getOwnDeprecations()
return when {
deprecations.isNotEmpty() -> DeprecationInfo(deprecations, hasInheritedDeprecations = false)
descriptor is PropertyAccessorDescriptor && descriptor.correspondingProperty is SyntheticPropertyDescriptor -> {
val syntheticProperty = descriptor.correspondingProperty as SyntheticPropertyDescriptor
val originalMethod =
if (descriptor is PropertyGetterDescriptor) syntheticProperty.getMethod else syntheticProperty.setMethod
@Suppress("FoldInitializerAndIfToElvis") // Wait until KTIJ-26450 is fixed
if (originalMethod == null) return DeprecationInfo.EMPTY
val originalMethodDeprecationInfo = deprecations(originalMethod)
// Limiting these new (they didn't exist before 1.9.10) deprecations only to WARNING and forcePropagationToOverrides
// (i.e., for overrides of NOT_CONSIDERED JDK members)
// is deliberate once we would like to reduce the scope of affected usages because otherwise
// it might be a big unexpected breaking change for users who are enabled -Werror flag.
val filteredDeprecations =
originalMethodDeprecationInfo.deprecations.filter {
it.deprecationLevel == DeprecationLevelValue.WARNING && it.forcePropagationToOverrides
}
return originalMethodDeprecationInfo.copy(deprecations = filteredDeprecations)
}
descriptor is CallableMemberDescriptor -> {
val inheritedDeprecations = listOfNotNull(deprecationByOverridden(descriptor))
when (inheritedDeprecations.isNotEmpty()) {
true -> when (languageVersionSettings.supportsFeature(LanguageFeature.StopPropagatingDeprecationThroughOverrides)) {
true -> DeprecationInfo(
inheritedDeprecations.filter { it.forcePropagationToOverrides },
hasInheritedDeprecations = true,
inheritedDeprecations
)
false -> DeprecationInfo(inheritedDeprecations, hasInheritedDeprecations = true)
}
false -> DeprecationInfo.EMPTY
}
}
else -> DeprecationInfo.EMPTY
}
}
private data class DeprecationInfo(
val deprecations: List,
val hasInheritedDeprecations: Boolean,
val hiddenInheritedDeprecations: List = emptyList()
) {
companion object {
val EMPTY = DeprecationInfo(emptyList(), hasInheritedDeprecations = false, emptyList())
}
}
private val isHiddenBecauseOfKotlinVersionAccessibility = storageManager.createMemoizedFunction { descriptor: DeclarationDescriptor ->
descriptor.checkSinceKotlinVersionAccessibility(languageVersionSettings)
}
fun getDeprecations(descriptor: DeclarationDescriptor): List =
deprecations(descriptor.original).deprecations
@OptIn(ExperimentalContracts::class)
fun areDeprecationsInheritedFromOverriden(descriptor: DeclarationDescriptor): Boolean {
contract {
returns(true) implies (descriptor is CallableMemberDescriptor)
}
return deprecations(descriptor.original).hasInheritedDeprecations
}
fun getHiddenDeprecationsFromOverriden(descriptor: DeclarationDescriptor): List =
deprecations(descriptor.original).hiddenInheritedDeprecations
fun isDeprecatedHidden(descriptor: DeclarationDescriptor): Boolean =
getDeprecations(descriptor).any { it.deprecationLevel == DeprecationLevelValue.HIDDEN }
@JvmOverloads
fun isHiddenInResolution(
descriptor: DeclarationDescriptor,
call: Call? = null,
bindingContext: BindingContext? = null,
isSuperCall: Boolean = false,
fromImportingScope: Boolean = false
): Boolean =
isHiddenInResolution(descriptor, call?.callElement, bindingContext, isSuperCall, fromImportingScope)
fun isHiddenInResolution(
descriptor: DeclarationDescriptor,
callElement: KtElement?,
bindingContext: BindingContext?,
isSuperCall: Boolean,
fromImportingScope: Boolean
): Boolean {
if (descriptor is FunctionDescriptor) {
if (descriptor.isHiddenToOvercomeSignatureClash) return true
if (descriptor.isHiddenForResolutionEverywhereBesideSupercalls && !isSuperCall) return true
}
val sinceKotlinAccessibility = isHiddenBecauseOfKotlinVersionAccessibility(descriptor.original)
if (sinceKotlinAccessibility is SinceKotlinAccessibility.NotAccessible) return true
if (sinceKotlinAccessibility is SinceKotlinAccessibility.NotAccessibleButWasExperimental) {
return if (callElement != null && bindingContext != null) {
with(OptInUsageChecker) {
sinceKotlinAccessibility.markerClasses.any { classDescriptor ->
!callElement.isOptInAllowed(classDescriptor.fqNameSafe, languageVersionSettings, bindingContext)
}
}
} else {
// We need a softer check for descriptors from importing scope as there is no access to PSI elements
// It's fine to return false here as there will be additional checks for accessibility later
!fromImportingScope
}
}
return isDeprecatedHidden(descriptor)
}
private fun KotlinType.deprecationsByConstituentTypes(): List =
SmartList().also { deprecations ->
TypeUtils.contains(this) { type ->
type.constructor.declarationDescriptor?.let {
deprecations.addAll(getDeprecations(it))
}
false
}
}
private fun deprecationByOverridden(root: CallableMemberDescriptor): DescriptorBasedDeprecationInfo? {
val visited = HashSet()
val deprecations = LinkedHashSet()
var hasUndeprecatedOverridden = false
fun traverse(node: CallableMemberDescriptor) {
if (node in visited) return
visited.add(node)
val deprecationsByAnnotation = node.getOwnDeprecations()
val overriddenDescriptors = node.original.overriddenDescriptors
when {
deprecationsByAnnotation.isNotEmpty() -> {
deprecations.addAll(deprecationsByAnnotation)
}
overriddenDescriptors.isEmpty() -> {
hasUndeprecatedOverridden = true
return
}
else -> {
overriddenDescriptors.forEach(::traverse)
}
}
}
traverse(root)
if (deprecations.isEmpty()) return null
if (hasUndeprecatedOverridden && deprecations.none { it.forcePropagationToOverrides }) return null
// We might've filtered out not-propagating deprecations already in the initializer of `deprecationsByAnnotation` in the code above.
// But it would lead to treating Java overridden as not-deprecated at all that works controversially in case of mixed J/K override:
// interface J {
// @Deprecated
// void foo();
// }
//
// interface K {
// @Deprecated("")
// fun foo();
// }
//
// class K1 : K, J {
// // We'd probably better treating it as deprecated
// // Basically, it's just a corner case and we may change the behavior if it's too annoying
// override fun foo() {}
// }
//
// Also, we don't ignore non-propagating deprecations in case of fake overrides
// Because we don't want to depend on the choice of the base descriptor
if (root.kind.isReal && deprecations.none(DescriptorBasedDeprecationInfo::propagatesToOverrides)) return null
return DeprecatedByOverridden(deprecations)
}
private fun DeclarationDescriptor.getOwnDeprecations(): List {
// The problem is that declaration `mod` in built-ins has @Deprecated annotation but actually it was deprecated only in version 1.1
if (isBuiltInOperatorMod && !shouldWarnAboutDeprecatedModFromBuiltIns(languageVersionSettings)) {
return emptyList()
}
// This is a temporary workaround before @DeprecatedSinceKotlin is introduced, see KT-23575
if (shouldSkipDeprecationOnKotlinIoReadBytes(this, languageVersionSettings)) {
return emptyList()
}
val result = SmartList()
addDeprecationIfPresent(result)
when (this) {
is TypeAliasDescriptor -> expandedType.deprecationsByConstituentTypes().mapTo(result) { deprecation ->
when (deprecation) {
is DeprecatedByAnnotation -> DeprecatedTypealiasByAnnotation(this, deprecation)
else -> deprecation
}
}
is DescriptorDerivedFromTypeAlias ->
result.addAll(typeAliasDescriptor.getOwnDeprecations())
is PropertyAccessorDescriptor ->
correspondingProperty.addDeprecationIfPresent(result)
}
return result.distinct()
}
private fun DeclarationDescriptor.addDeprecationIfPresent(result: MutableList) {
val annotation = annotations.findAnnotation(StandardNames.FqNames.deprecated) ?: annotations.findAnnotation(JAVA_DEPRECATED)
if (annotation != null) {
val deprecatedByAnnotation =
DeprecatedByAnnotation.create(
annotation, annotations.findAnnotation(StandardNames.FqNames.deprecatedSinceKotlin),
this, deprecationSettings.propagatedToOverrides(annotation),
languageVersionSettings.apiVersion
)
if (deprecatedByAnnotation != null) {
val deprecation = when {
this is TypeAliasConstructorDescriptor ->
DeprecatedTypealiasByAnnotation(typeAliasDescriptor, deprecatedByAnnotation)
isBuiltInOperatorMod ->
DeprecatedOperatorMod(languageVersionSettings, deprecatedByAnnotation)
else -> deprecatedByAnnotation
}
result.add(deprecation)
}
}
for (deprecation in getDeprecationByVersionRequirement(this)) {
result.add(deprecation)
}
getDeprecationFromUserData(this)?.let(result::add)
}
private val DeclarationDescriptor.isBuiltInOperatorMod: Boolean
get() = this is FunctionDescriptor && this.isOperatorMod() && KotlinBuiltIns.isUnderKotlinPackage(this)
private fun shouldSkipDeprecationOnKotlinIoReadBytes(
descriptor: DeclarationDescriptor, languageVersionSettings: LanguageVersionSettings
): Boolean =
descriptor.name.asString() == "readBytes" &&
(descriptor.containingDeclaration as? PackageFragmentDescriptor)?.fqName?.asString() == "kotlin.io" &&
descriptor is FunctionDescriptor &&
descriptor.valueParameters.singleOrNull()?.type?.let(KotlinBuiltIns::isInt) == true &&
languageVersionSettings.apiVersion < ApiVersion.KOTLIN_1_3
private fun getDeprecationFromUserData(target: DeclarationDescriptor): DescriptorBasedDeprecationInfo? =
(target as? CallableDescriptor)?.getUserData(DEPRECATED_FUNCTION_KEY)
private fun getDeprecationByVersionRequirement(target: DeclarationDescriptor): List {
val versionRequirements =
(target as? DeserializedMemberDescriptor)?.versionRequirements
?: (target as? DeserializedClassDescriptor)?.versionRequirements
?: return emptyList()
return versionRequirements.mapNotNull { versionRequirement ->
if (!versionRequirement.isFulfilled(this.languageVersionSettings))
DeprecatedByVersionRequirement(versionRequirement, target)
else
null
}
}
companion object {
val JAVA_DEPRECATED = FqName("java.lang.Deprecated")
}
}
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