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// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package org.jetbrains.uast.kotlin.internal
import com.intellij.psi.*
import com.intellij.psi.util.PsiTypesUtil
import org.jetbrains.kotlin.analysis.api.KtAnalysisSession
import org.jetbrains.kotlin.analysis.api.symbols.KtConstructorSymbol
import org.jetbrains.kotlin.analysis.api.symbols.KtFunctionLikeSymbol
import org.jetbrains.kotlin.analysis.api.symbols.KtFunctionSymbol
import org.jetbrains.kotlin.analysis.api.types.KtClassErrorType
import org.jetbrains.kotlin.analysis.api.types.KtNonErrorClassType
import org.jetbrains.kotlin.analysis.api.types.KtType
import org.jetbrains.kotlin.analysis.api.types.KtTypeMappingMode
import org.jetbrains.kotlin.analysis.project.structure.KtSourceModule
import org.jetbrains.kotlin.analysis.project.structure.getKtModule
import org.jetbrains.kotlin.asJava.getRepresentativeLightMethod
import org.jetbrains.kotlin.asJava.toLightClass
import org.jetbrains.kotlin.idea.KotlinLanguage
import org.jetbrains.kotlin.name.StandardClassIds
import org.jetbrains.kotlin.psi.*
import org.jetbrains.kotlin.psi.psiUtil.containingClass
import org.jetbrains.kotlin.types.typeUtil.TypeNullability
import org.jetbrains.uast.*
import org.jetbrains.uast.kotlin.FirKotlinUastLanguagePlugin
import org.jetbrains.uast.kotlin.TypeOwnerKind
import org.jetbrains.uast.kotlin.getContainingLightClass
import org.jetbrains.uast.kotlin.lz
import org.jetbrains.uast.kotlin.psi.UastFakeLightMethod
import org.jetbrains.uast.kotlin.psi.UastFakeLightPrimaryConstructor
val firKotlinUastPlugin: FirKotlinUastLanguagePlugin by lz {
UastLanguagePlugin.getInstances().single { it.language == KotlinLanguage.INSTANCE } as FirKotlinUastLanguagePlugin?
?: FirKotlinUastLanguagePlugin()
}
internal fun KtAnalysisSession.containingKtClass(
ktConstructorSymbol: KtConstructorSymbol,
): KtClass? {
return when (val psi = ktConstructorSymbol.psi) {
is KtClass -> psi
is KtConstructor<*> -> psi.containingClass()
else -> null
}
}
internal fun KtAnalysisSession.toPsiClass(
ktType: KtType,
source: UElement?,
context: KtElement,
typeOwnerKind: TypeOwnerKind
): PsiClass? {
(context as? KtClass)?.toLightClass()?.let { return it }
return PsiTypesUtil.getPsiClass(toPsiType(ktType, source, context, typeOwnerKind, boxed = true))
}
internal fun KtAnalysisSession.toPsiMethod(functionSymbol: KtFunctionLikeSymbol): PsiMethod? {
return when (val psi = functionSymbol.psi) {
null -> null
is PsiMethod -> psi
is KtClassOrObject -> {
// For synthetic members in enum classes, `psi` points to their containing enum class.
if (psi is KtClass && psi.isEnum()) {
val lc = psi.toLightClass() ?: return null
lc.methods.find { it.name == (functionSymbol as? KtFunctionSymbol)?.name?.identifier }?.let { return it }
}
// Default primary constructor
psi.primaryConstructor?.getRepresentativeLightMethod()?.let { return it }
val lc = psi.toLightClass() ?: return null
lc.constructors.firstOrNull()?.let { return it }
if (psi.isLocal) UastFakeLightPrimaryConstructor(psi, lc) else null
}
is KtFunction -> {
// For JVM-invisible methods, such as @JvmSynthetic, LC conversion returns nothing, so fake it
fun handleLocalOrSynthetic(source: KtFunction): PsiMethod? {
val ktModule = source.getKtModule()
if (ktModule !is KtSourceModule) return null
return getContainingLightClass(source)?.let { UastFakeLightMethod(source, it) }
}
if (psi.isLocal)
handleLocalOrSynthetic(psi)
else
psi.getRepresentativeLightMethod() ?: handleLocalOrSynthetic(psi)
}
else -> psi.getRepresentativeLightMethod()
}
}
internal fun KtAnalysisSession.toPsiType(
ktType: KtType,
source: UElement?,
context: KtElement,
typeOwnerKind: TypeOwnerKind,
boxed: Boolean = false
): PsiType =
toPsiType(
ktType,
source?.getParentOfType<UDeclaration>(false)?.javaPsi as? PsiModifierListOwner,
context,
typeOwnerKind,
boxed
)
internal fun KtAnalysisSession.toPsiType(
ktType: KtType,
containingLightDeclaration: PsiModifierListOwner?,
context: KtElement,
typeOwnerKind: TypeOwnerKind,
boxed: Boolean = false
): PsiType {
if (ktType is KtNonErrorClassType && ktType.typeArguments.isEmpty()) {
fun PsiPrimitiveType.orBoxed() = if (boxed) getBoxedType(context) else this
val psiType = when (ktType.classId) {
StandardClassIds.Int -> PsiType.INT.orBoxed()
StandardClassIds.Long -> PsiType.LONG.orBoxed()
StandardClassIds.Short -> PsiType.SHORT.orBoxed()
StandardClassIds.Boolean -> PsiType.BOOLEAN.orBoxed()
StandardClassIds.Byte -> PsiType.BYTE.orBoxed()
StandardClassIds.Char -> PsiType.CHAR.orBoxed()
StandardClassIds.Double -> PsiType.DOUBLE.orBoxed()
StandardClassIds.Float -> PsiType.FLOAT.orBoxed()
StandardClassIds.Unit -> {
if (typeOwnerKind == TypeOwnerKind.DECLARATION && context is KtNamedFunction)
PsiType.VOID.orBoxed()
else null
}
StandardClassIds.String -> PsiType.getJavaLangString(context.manager, context.resolveScope)
else -> null
}
if (psiType != null) return psiType
}
val psiTypeParent: PsiElement = containingLightDeclaration ?: context
return ktType.asPsiType(
psiTypeParent,
KtTypeMappingMode.DEFAULT_UAST,
isAnnotationMethod = false
) ?: UastErrorType
}
internal fun KtAnalysisSession.nullability(ktType: KtType?): TypeNullability? {
if (ktType == null) return null
if (ktType is KtClassErrorType) return null
return if (ktType.canBeNull) TypeNullability.NULLABLE else TypeNullability.NOT_NULL
}
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