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/*
* Copyright 2010-2023 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.asJava.classes
import com.intellij.openapi.util.TextRange
import com.intellij.openapi.util.registry.Registry
import com.intellij.psi.*
import com.intellij.psi.impl.InheritanceImplUtil
import com.intellij.psi.impl.PsiClassImplUtil
import com.intellij.psi.impl.PsiSuperMethodImplUtil
import com.intellij.psi.impl.light.LightMethodBuilder
import com.intellij.psi.util.CachedValue
import com.intellij.psi.util.CachedValueProvider
import com.intellij.psi.util.CachedValuesManager
import org.jetbrains.kotlin.asJava.elements.KtLightField
import org.jetbrains.kotlin.asJava.elements.KtLightMethod
import org.jetbrains.kotlin.asJava.elements.KtUltraLightModifierList
import org.jetbrains.kotlin.asJava.toLightClass
import org.jetbrains.kotlin.backend.common.CodegenUtil
import org.jetbrains.kotlin.backend.common.DataClassMethodGenerator
import org.jetbrains.kotlin.builtins.KotlinBuiltIns
import org.jetbrains.kotlin.builtins.StandardNames
import org.jetbrains.kotlin.codegen.JvmCodegenUtil
import org.jetbrains.kotlin.codegen.kotlinType
import org.jetbrains.kotlin.config.LanguageFeature
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.descriptors.FunctionDescriptor
import org.jetbrains.kotlin.descriptors.PropertyDescriptor
import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
import org.jetbrains.kotlin.lexer.KtTokens.*
import org.jetbrains.kotlin.load.java.JvmAbi
import org.jetbrains.kotlin.load.java.JvmAnnotationNames
import org.jetbrains.kotlin.load.kotlin.TypeMappingMode
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.name.JvmStandardClassIds.JVM_OVERLOADS_FQ_NAME
import org.jetbrains.kotlin.name.JvmStandardClassIds.JVM_RECORD_ANNOTATION_FQ_NAME
import org.jetbrains.kotlin.psi.*
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlin.resolve.DelegationResolver
import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
import org.jetbrains.kotlin.resolve.annotations.JVM_STATIC_ANNOTATION_FQ_NAME
import org.jetbrains.kotlin.resolve.annotations.argumentValue
import org.jetbrains.kotlin.resolve.constants.EnumValue
import org.jetbrains.kotlin.resolve.descriptorUtil.classId
import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOriginKind
import org.jetbrains.kotlin.types.KotlinType
import org.jetbrains.kotlin.types.typeUtil.isAnyOrNullableAny
import org.jetbrains.kotlin.utils.addToStdlib.cast
import org.jetbrains.kotlin.utils.addToStdlib.safeAs
open class KtUltraLightClass(classOrObject: KtClassOrObject, internal val support: KtUltraLightSupport) :
KtLightClassImpl(classOrObject, support.jvmDefaultMode) {
private class KtUltraLightClassModifierList(
private val containingClass: KtLightClassForSourceDeclaration,
support: KtUltraLightSupport,
private val lazyModifiers: Lazy>,
private val lazyIsFinal: Lazy,
) : KtUltraLightModifierList(containingClass, support) {
override fun hasModifierProperty(name: String): Boolean =
if (name != PsiModifier.FINAL) name in lazyModifiers.value else owner.isFinal(lazyIsFinal.value)
override fun copy(): PsiElement = KtUltraLightClassModifierList(containingClass, support, lazyModifiers, lazyIsFinal)
}
private val membersBuilder by lazyPub {
UltraLightMembersCreator(
this,
isNamedObject(),
classOrObject.hasModifier(SEALED_KEYWORD),
mangleInternalFunctions = true,
support = support,
)
}
private val _deprecated by lazyPub { classOrObject.isDeprecated(support) }
override fun isFinal(isFinalByPsi: Boolean) = isFinalByPsi
private val _modifierList: PsiModifierList? by lazyPub {
KtUltraLightClassModifierList(
containingClass = this,
support = support,
lazyModifiers = lazyPub { computeModifiersByPsi() },
lazyIsFinal = lazyPub { computeIsFinal() },
)
}
override fun getModifierList(): PsiModifierList? = _modifierList
private fun allSuperTypes() =
getDescriptor()?.typeConstructor?.supertypes.orEmpty()
private fun mapSupertype(supertype: KotlinType, kotlinCollectionAsIs: Boolean = false) =
supertype.asPsiType(
support,
if (kotlinCollectionAsIs) TypeMappingMode.SUPER_TYPE_KOTLIN_COLLECTIONS_AS_IS else TypeMappingMode.SUPER_TYPE,
this
) as? PsiClassType
override fun createExtendsList(): PsiReferenceList? = createInheritanceList(forExtendsList = true)
override fun createImplementsList(): PsiReferenceList? = createInheritanceList(forExtendsList = false)
private fun createInheritanceList(forExtendsList: Boolean): PsiReferenceList {
val role = if (forExtendsList) PsiReferenceList.Role.EXTENDS_LIST else PsiReferenceList.Role.IMPLEMENTS_LIST
if (isAnnotationType) return KotlinLightReferenceListBuilder(manager, language, role)
val superTypes = allSuperTypes().filter {
isTypeForInheritanceList(it, forExtendsList)
}
val listBuilder = KotlinSuperTypeListBuilder(
this,
kotlinOrigin = kotlinOrigin.getSuperTypeList(),
manager = manager,
language = language,
role = role
)
for (superType in superTypes) {
addTypeToTypeList(
listBuilder = listBuilder,
superType = superType
)
}
return listBuilder
}
private fun addTypeToTypeList(listBuilder: KotlinSuperTypeListBuilder, superType: KotlinType) {
val mappedType = mapSupertype(superType, kotlinCollectionAsIs = true) ?: return
listBuilder.addReference(mappedType)
if (mappedType.canonicalText.startsWith("kotlin.collections.")) {
val mappedToNoCollectionAsIs = mapSupertype(superType, kotlinCollectionAsIs = false)
if (mappedToNoCollectionAsIs !== null &&
mappedType.canonicalText != mappedToNoCollectionAsIs.canonicalText
) {
//Add java supertype
listBuilder.addReference(mappedToNoCollectionAsIs)
//Add marker interface
superType.constructor.declarationDescriptor.classId?.let { classId ->
listBuilder.addMarkerInterfaceIfNeeded(classId)
}
}
}
}
private fun isTypeForInheritanceList(supertype: KotlinType, forExtendsList: Boolean): Boolean {
// Do not add redundant "extends java.lang.Object" anywhere
if (supertype.isAnyOrNullableAny()) return false
// We don't have Enum among enums supertype in sources neither we do for decompiled class-files and light-classes
if (isEnum && KotlinBuiltIns.isEnum(supertype)) return false
// Interfaces have only extends lists
if (isInterface) return forExtendsList
return forExtendsList == !JvmCodegenUtil.isJvmInterface(supertype)
}
override fun buildTypeParameterList(): PsiTypeParameterList = buildTypeParameterListForSourceDeclaration(classOrObject, this, support)
// the following logic should be in the platform (super), overrides can be removed once that happens
override fun getInterfaces(): Array = PsiClassImplUtil.getInterfaces(this)
override fun getSuperClass(): PsiClass? = PsiClassImplUtil.getSuperClass(this)
override fun getSupers(): Array = PsiClassImplUtil.getSupers(this)
override fun getSuperTypes(): Array = PsiClassImplUtil.getSuperTypes(this)
override fun getVisibleSignatures(): MutableCollection = PsiSuperMethodImplUtil.getVisibleSignatures(this)
override fun getRBrace(): PsiElement? = null
override fun getLBrace(): PsiElement? = null
private val _ownFields: List by lazyPub {
val result = arrayListOf()
val usedNames = hashSetOf()
this.classOrObject.companionObjects.firstOrNull()?.let { companion ->
result.add(
KtUltraLightFieldForSourceDeclaration(
companion,
membersBuilder.generateUniqueFieldName(companion.name.orEmpty(), usedNames),
this,
support,
setOf(PsiModifier.STATIC, PsiModifier.FINAL, companion.simpleVisibility())
)
)
for (property in companion.declarations.filterIsInstance()) {
if (isInterface && !property.isConstOrJvmField()) continue
membersBuilder.createPropertyField(property, usedNames, true)?.let(result::add)
}
}
fun ArrayList.updateWithCompilerPlugins() = also {
val lazyDescriptor = lazy { getDescriptor() }
project.applyCompilerPlugins {
it.interceptFieldsBuilding(
declaration = kotlinOrigin,
descriptor = lazyDescriptor,
containingDeclaration = this@KtUltraLightClass,
fieldsList = result
)
}
}
if (isAnnotationType) return@lazyPub result.updateWithCompilerPlugins()
for (parameter in propertyParameters()) {
membersBuilder.createPropertyField(parameter, usedNames, forceStatic = false)?.let(result::add)
}
if (!isInterface) {
val isCompanion = this.classOrObject.safeAs()?.isCompanion() == true
for (property in this.classOrObject.declarations.filterIsInstance()) {
// All fields for companion object of classes are generated to the containing class
// For interfaces, only @JvmField-annotated properties are generated to the containing class
// Probably, the same should work for const vals but it doesn't at the moment (see KT-28294)
if (isCompanion && (containingClass?.isInterface == false || property.isJvmField())) continue
membersBuilder.createPropertyField(property, usedNames, forceStatic = this.classOrObject is KtObjectDeclaration)
?.let(result::add)
}
}
if (isNamedObject() && !this.classOrObject.isLocal) {
result.add(
KtUltraLightFieldForSourceDeclaration(
this.classOrObject,
JvmAbi.INSTANCE_FIELD,
this,
support,
setOf(PsiModifier.STATIC, PsiModifier.FINAL, PsiModifier.PUBLIC)
)
)
}
if (isEnum) {
for (ktEnumEntry in classOrObject.declarations.filterIsInstance()) {
val name = ktEnumEntry.name ?: continue
result.add(
KtUltraLightEnumEntry(
ktEnumEntry, name, this, support,
setOf(PsiModifier.STATIC, PsiModifier.FINAL, PsiModifier.PUBLIC)
)
)
}
}
result.updateWithCompilerPlugins()
}
private fun isNamedObject() = classOrObject is KtObjectDeclaration && !classOrObject.cast().isCompanion()
override fun getOwnFields(): List = _ownFields
private fun propertyParameters() = classOrObject.primaryConstructorParameters.filter { it.hasValOrVar() }
private fun ownMethods(): List {
val result = mutableListOf()
for (declaration in this.classOrObject.declarations.filterNot { it.isHiddenByDeprecation(support) }) {
if (declaration.hasModifier(PRIVATE_KEYWORD) && isInterface) continue
when (declaration) {
is KtNamedFunction -> result.addAll(membersBuilder.createMethods(declaration, forceStatic = false))
is KtProperty -> result.addAll(
membersBuilder.propertyAccessors(declaration, declaration.isVar, forceStatic = false, onlyJvmStatic = false)
)
}
}
for (parameter in propertyParameters()) {
result.addAll(
membersBuilder.propertyAccessors(
parameter,
parameter.isMutable,
forceStatic = false,
onlyJvmStatic = false,
createAsAnnotationMethod = isAnnotationType,
isJvmRecord = classOrObject.hasAnnotation(JVM_RECORD_ANNOTATION_FQ_NAME),
)
)
}
if (!isInterface) {
result.addAll(createConstructors())
}
this.classOrObject.companionObjects.firstOrNull()?.let { companion ->
for (declaration in companion.declarations.filterNot { isHiddenByDeprecation(it) }) {
when (declaration) {
is KtNamedFunction ->
if (isJvmStatic(declaration)) result.addAll(membersBuilder.createMethods(declaration, forceStatic = true))
is KtProperty -> result.addAll(
membersBuilder.propertyAccessors(
declaration,
declaration.isVar,
forceStatic = false,
onlyJvmStatic = true
)
)
}
}
}
addMethodsFromDataClass(result)
addDelegatesToInterfaceMethods(result)
val lazyDescriptor = lazy { getDescriptor() }
project.applyCompilerPlugins {
val methodsList = mutableListOf()
it.interceptMethodsBuilding(
declaration = kotlinOrigin,
descriptor = lazyDescriptor,
containingDeclaration = this,
methodsList = methodsList
)
result.addAll(methodsList)
}
if (isEnum && support.languageVersionSettings.supportsFeature(LanguageFeature.EnumEntries)) {
result.add(getEnumEntriesPsiMethod(this))
}
return result
}
private val _ownMethods: CachedValue> = CachedValuesManager.getManager(project).createCachedValue(
{
CachedValueProvider.Result.create(
ownMethods(),
classOrObject.getExternalDependencies()
)
}, false
)
private fun addMethodsFromDataClass(result: MutableList) {
if (!classOrObject.hasModifier(DATA_KEYWORD)) return
val ktClass = classOrObject as? KtClass ?: return
val descriptor = classOrObject.resolve() as? ClassDescriptor ?: return
val bindingContext = classOrObject.analyze()
// Force resolving data class members set
descriptor.unsubstitutedMemberScope.getContributedDescriptors()
val areCtorParametersAreAnalyzed = ktClass.primaryConstructorParameters
.filter { it.hasValOrVar() }
.all { bindingContext.get(BindingContext.PRIMARY_CONSTRUCTOR_PARAMETER, it) != null }
if (!areCtorParametersAreAnalyzed) return
object : DataClassMethodGenerator(classOrObject, bindingContext) {
private fun addFunction(descriptor: FunctionDescriptor, declarationForOrigin: KtDeclaration? = null) {
result.add(createGeneratedMethodFromDescriptor(descriptor, JvmDeclarationOriginKind.OTHER, declarationForOrigin))
}
override fun generateComponentFunction(function: FunctionDescriptor, parameter: ValueParameterDescriptor) {
addFunction(function, DescriptorToSourceUtils.descriptorToDeclaration(parameter) as? KtDeclaration)
}
override fun generateCopyFunction(function: FunctionDescriptor, constructorParameters: List) {
addFunction(function)
}
override fun generateToStringMethod(function: FunctionDescriptor, properties: List) {
addFunction(function)
}
override fun generateHashCodeMethod(function: FunctionDescriptor, properties: List) {
addFunction(function)
}
override fun generateEqualsMethod(function: FunctionDescriptor, properties: List) {
addFunction(function)
}
}.generate()
}
private fun addDelegatesToInterfaceMethods(result: MutableList) {
classOrObject.superTypeListEntries.filterIsInstance().forEach {
addDelegatesToInterfaceMethods(it, result)
}
}
private fun addDelegatesToInterfaceMethods(
superTypeEntry: KtDelegatedSuperTypeEntry,
result: MutableList
) {
val classDescriptor = classOrObject.resolve() as? ClassDescriptor ?: return
val typeReference = superTypeEntry.typeReference ?: return
val bindingContext = typeReference.analyze()
val superClassDescriptor = CodegenUtil.getSuperClassBySuperTypeListEntry(superTypeEntry, bindingContext) ?: return
val delegationType = superTypeEntry.delegateExpression.kotlinType(bindingContext)
for (delegate in DelegationResolver.getDelegates(classDescriptor, superClassDescriptor, delegationType).keys) {
when (delegate) {
is PropertyDescriptor -> delegate.accessors.mapTo(result) {
createGeneratedMethodFromDescriptor(
descriptor = it,
declarationOriginKindForOrigin = JvmDeclarationOriginKind.DELEGATION
)
}
is FunctionDescriptor -> result.add(
createGeneratedMethodFromDescriptor(
descriptor = delegate,
declarationOriginKindForOrigin = JvmDeclarationOriginKind.DELEGATION
)
)
}
}
}
private fun createConstructors(): List {
val result = arrayListOf()
val constructors = classOrObject.allConstructors
if (constructors.isEmpty()) {
result.add(defaultConstructor())
}
for (constructor in constructors.filterNot { isHiddenByDeprecation(it) }) {
result.addAll(membersBuilder.createMethods(constructor, false, forcePrivate = isEnum))
}
val primary = classOrObject.primaryConstructor
if (primary != null && shouldGenerateNoArgOverload(primary)) {
result.add(noArgConstructor(primary.simpleVisibility(), primary, METHOD_INDEX_FOR_NO_ARG_OVERLOAD_CTOR))
}
return result
}
private fun shouldGenerateNoArgOverload(primary: KtPrimaryConstructor): Boolean {
return !primary.hasModifier(PRIVATE_KEYWORD) &&
!classOrObject.hasModifier(INNER_KEYWORD) && !isEnum &&
!classOrObject.hasModifier(SEALED_KEYWORD) &&
primary.valueParameters.isNotEmpty() &&
primary.valueParameters.all { it.defaultValue != null } &&
classOrObject.allConstructors.none { it.valueParameters.isEmpty() } &&
!primary.hasAnnotation(JVM_OVERLOADS_FQ_NAME)
}
private fun defaultConstructor(): KtUltraLightMethod {
val visibility =
when {
classOrObject is KtObjectDeclaration || isEnum -> PsiModifier.PRIVATE
classOrObject.hasModifier(SEALED_KEYWORD) -> PsiModifier.PROTECTED
classOrObject is KtEnumEntry -> PsiModifier.PACKAGE_LOCAL
else -> PsiModifier.PUBLIC
}
return noArgConstructor(visibility, classOrObject, METHOD_INDEX_FOR_DEFAULT_CTOR)
}
private fun noArgConstructor(
visibility: String,
declaration: KtDeclaration,
methodIndex: Int
): KtUltraLightMethod =
KtUltraLightMethodForSourceDeclaration(
LightMethodBuilder(manager, language, name.orEmpty()).setConstructor(true).addModifier(visibility),
declaration,
support,
this,
methodIndex
)
private fun isHiddenByDeprecation(declaration: KtDeclaration): Boolean {
val deprecated = support.findAnnotation(declaration, FqName("kotlin.Deprecated"))?.second
return (deprecated?.argumentValue("level") as? EnumValue)?.enumEntryName?.asString() == "HIDDEN"
}
private fun isJvmStatic(declaration: KtAnnotated): Boolean = declaration.hasAnnotation(JVM_STATIC_ANNOTATION_FQ_NAME)
override fun getOwnMethods(): List = _ownMethods.value
private fun KtAnnotated.hasAnnotation(name: FqName) = support.findAnnotation(this, name) != null
private fun KtCallableDeclaration.isConstOrJvmField() =
hasModifier(CONST_KEYWORD) || isJvmField()
private fun KtCallableDeclaration.isJvmField() = hasAnnotation(JvmAbi.JVM_FIELD_ANNOTATION_FQ_NAME)
override fun getInitializers(): Array = emptyArray()
override fun getContainingClass(): PsiClass? {
val containingBody = classOrObject.parent as? KtClassBody
val containingClass = containingBody?.parent as? KtClassOrObject
containingClass?.let { return it.toLightClass() }
val containingBlock = classOrObject.parent as? KtBlockExpression
val containingScript = containingBlock?.parent as? KtScript
containingScript?.let { return it.toLightClass() }
return null
}
override fun getParent(): PsiElement? = containingClass ?: containingFile
override fun getScope(): PsiElement? = parent
override fun isInheritorDeep(baseClass: PsiClass, classToByPass: PsiClass?): Boolean =
InheritanceImplUtil.isInheritorDeep(this, baseClass, classToByPass)
override fun isDeprecated(): Boolean = _deprecated
override fun copy(): KtLightClassImpl = KtUltraLightClass(classOrObject.copy() as KtClassOrObject, support)
override fun getTextRange(): TextRange? {
if (Registry.`is`("kotlin.ultra.light.classes.empty.text.range", true)) {
return null
}
return super.getTextRange()
}
override fun getOwnInnerClasses(): List = super.getOwnInnerClasses().let { superOwnInnerClasses ->
if (shouldGenerateRepeatableAnnotationContainer) {
superOwnInnerClasses + KtUltraLightClassForRepeatableAnnotationContainer(classOrObject, support)
} else
superOwnInnerClasses
}
override fun createClassForInterfaceDefaultImpls(): PsiClass = KtUltraLightClassForInterfaceDefaultImpls(classOrObject, support)
private val shouldGenerateRepeatableAnnotationContainer: Boolean
get() = isAnnotationType &&
classOrObject.hasAnnotation(StandardNames.FqNames.repeatable) &&
!classOrObject.hasAnnotation(JvmAnnotationNames.REPEATABLE_ANNOTATION)
}