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/*
* Copyright 2020 Google LLC
* Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.devtools.ksp.symbol.impl.java
import com.google.devtools.ksp.KSObjectCache
import com.google.devtools.ksp.isConstructor
import com.google.devtools.ksp.memoized
import com.google.devtools.ksp.processing.impl.KSNameImpl
import com.google.devtools.ksp.processing.impl.ResolverImpl
import com.google.devtools.ksp.processing.impl.workaroundForNested
import com.google.devtools.ksp.symbol.*
import com.google.devtools.ksp.symbol.impl.*
import com.google.devtools.ksp.symbol.impl.binary.getAllFunctions
import com.google.devtools.ksp.symbol.impl.binary.getAllProperties
import com.google.devtools.ksp.symbol.impl.kotlin.KSErrorType
import com.google.devtools.ksp.symbol.impl.kotlin.KSExpectActualNoImpl
import com.google.devtools.ksp.symbol.impl.kotlin.getKSTypeCached
import com.google.devtools.ksp.symbol.impl.replaceTypeArguments
import com.google.devtools.ksp.symbol.impl.synthetic.KSConstructorSyntheticImpl
import com.google.devtools.ksp.toKSModifiers
import com.intellij.psi.PsiClass
import com.intellij.psi.PsiEnumConstant
import com.intellij.psi.PsiJavaFile
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.load.java.structure.impl.JavaClassImpl
import org.jetbrains.kotlin.types.typeUtil.replaceArgumentsWithStarProjections
class KSClassDeclarationJavaImpl private constructor(val psi: PsiClass) :
KSClassDeclaration,
KSDeclarationJavaImpl(psi),
KSExpectActual by KSExpectActualNoImpl() {
companion object : KSObjectCache<PsiClass, KSClassDeclarationJavaImpl>() {
fun getCached(psi: PsiClass) = cache.getOrPut(psi) { KSClassDeclarationJavaImpl(psi) }
}
override val origin = Origin.JAVA
override val location: Location by lazy {
psi.toLocation()
}
override val annotations: Sequence<KSAnnotation> by lazy {
psi.annotations.asSequence().map { KSAnnotationJavaImpl.getCached(it) }.memoized()
}
override val classKind: ClassKind by lazy {
when {
psi.isAnnotationType -> ClassKind.ANNOTATION_CLASS
psi.isInterface -> ClassKind.INTERFACE
psi.isEnum -> ClassKind.ENUM_CLASS
else -> ClassKind.CLASS
}
}
override val containingFile: KSFile? by lazy {
KSFileJavaImpl.getCached(psi.containingFile as PsiJavaFile)
}
override val isCompanionObject = false
// Could the resolution ever fail?
private val descriptor: ClassDescriptor? by lazy {
ResolverImpl.instance!!.moduleClassResolver.resolveClass(JavaClassImpl(psi).apply { workaroundForNested() })
}
// TODO in 1.5 + jvmTarget 15, will we return Java permitted types?
override fun getSealedSubclasses(): Sequence<KSClassDeclaration> = emptySequence()
override fun getAllFunctions(): Sequence<KSFunctionDeclaration> =
descriptor?.getAllFunctions() ?: emptySequence()
override fun getAllProperties(): Sequence<KSPropertyDeclaration> =
descriptor?.getAllProperties() ?: emptySequence()
override val declarations: Sequence<KSDeclaration> by lazy {
val allDeclarations = (
psi.fields.asSequence().map {
when (it) {
is PsiEnumConstant -> KSClassDeclarationJavaEnumEntryImpl.getCached(it)
else -> KSPropertyDeclarationJavaImpl.getCached(it)
}
} +
psi.innerClasses.map { KSClassDeclarationJavaImpl.getCached(it) } +
psi.constructors.map { KSFunctionDeclarationJavaImpl.getCached(it) } +
psi.methods.map { KSFunctionDeclarationJavaImpl.getCached(it) }
)
.distinct()
// java annotation classes are interface. they get a constructor in .class
// hence they should get one here.
if (classKind == ClassKind.ANNOTATION_CLASS || !psi.isInterface) {
val hasConstructor = allDeclarations.any {
it is KSFunctionDeclaration && it.isConstructor()
}
if (hasConstructor) {
allDeclarations.memoized()
} else {
(allDeclarations + KSConstructorSyntheticImpl.getCached(this)).memoized()
}
} else {
allDeclarations.memoized()
}
}
override val modifiers: Set<Modifier> by lazy {
val modifiers = mutableSetOf<Modifier>()
modifiers.addAll(psi.toKSModifiers())
if (psi.isAnnotationType) {
modifiers.add(Modifier.ANNOTATION)
}
if (psi.isEnum) {
modifiers.add(Modifier.ENUM)
}
modifiers
}
override val primaryConstructor: KSFunctionDeclaration? = null
override val qualifiedName: KSName by lazy {
KSNameImpl.getCached(psi.qualifiedName!!)
}
override val simpleName: KSName by lazy {
KSNameImpl.getCached(psi.name!!)
}
override val superTypes: Sequence<KSTypeReference> by lazy {
val adjusted = if (!psi.isInterface && psi.superTypes.size > 1) {
psi.superTypes.filterNot {
it.className == "Object" && it.canonicalText == "java.lang.Object"
}
} else {
psi.superTypes.toList()
}
adjusted.asSequence().map { KSTypeReferenceJavaImpl.getCached(it, this) }.memoized()
}
override val typeParameters: List<KSTypeParameter> by lazy {
psi.typeParameters.map { KSTypeParameterJavaImpl.getCached(it) }
}
override fun asType(typeArguments: List<KSTypeArgument>): KSType {
return descriptor?.let {
it.defaultType.replaceTypeArguments(typeArguments)?.let {
getKSTypeCached(it, typeArguments)
}
} ?: KSErrorType
}
override fun asStarProjectedType(): KSType {
return descriptor?.let {
getKSTypeCached(it.defaultType.replaceArgumentsWithStarProjections())
} ?: KSErrorType
}
override fun <D, R> accept(visitor: KSVisitor<D, R>, data: D): R {
return visitor.visitClassDeclaration(this, data)
}
}
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