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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.kotlin
import com.google.devtools.ksp.KSObjectCache
import com.google.devtools.ksp.getClassType
import com.google.devtools.ksp.isConstructor
import com.google.devtools.ksp.memoized
import com.google.devtools.ksp.processing.impl.ResolverImpl
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.binary.sealedSubclassesSequence
import com.google.devtools.ksp.symbol.impl.synthetic.KSConstructorSyntheticImpl
import com.google.devtools.ksp.symbol.impl.synthetic.KSTypeReferenceSyntheticImpl
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.psi.KtClassOrObject
import org.jetbrains.kotlin.psi.KtObjectDeclaration
import org.jetbrains.kotlin.psi.KtSecondaryConstructor
import org.jetbrains.kotlin.types.typeUtil.replaceArgumentsWithStarProjections
class KSClassDeclarationImpl private constructor(val ktClassOrObject: KtClassOrObject) :
KSClassDeclaration,
KSDeclarationImpl(ktClassOrObject),
KSExpectActual by KSExpectActualImpl(ktClassOrObject) {
companion object : KSObjectCache<KtClassOrObject, KSClassDeclarationImpl>() {
fun getCached(ktClassOrObject: KtClassOrObject) =
cache.getOrPut(ktClassOrObject) { KSClassDeclarationImpl(ktClassOrObject) }
}
override val classKind: ClassKind by lazy {
ktClassOrObject.getClassType()
}
override val isCompanionObject by lazy {
(ktClassOrObject is KtObjectDeclaration) && (ktClassOrObject.isCompanion())
}
override fun getSealedSubclasses(): Sequence<KSClassDeclaration> {
return if (Modifier.SEALED in modifiers) {
ResolverImpl.instance!!.incrementalContext.recordGetSealedSubclasses(this)
descriptor.sealedSubclassesSequence()
} else {
emptySequence()
}
}
override fun getAllFunctions(): Sequence<KSFunctionDeclaration> = descriptor.getAllFunctions()
override fun getAllProperties(): Sequence<KSPropertyDeclaration> = descriptor.getAllProperties()
override val declarations: Sequence<KSDeclaration> by lazy {
val propertiesFromConstructor = primaryConstructor?.parameters
?.asSequence()
?.filter { it.isVar || it.isVal }
?.map { KSPropertyDeclarationParameterImpl.getCached((it as KSValueParameterImpl).ktParameter) }
?: emptySequence()
var result = propertiesFromConstructor.plus(ktClassOrObject.declarations.asSequence().getKSDeclarations())
primaryConstructor?.let { primaryConstructor: KSFunctionDeclaration ->
// if primary constructor is from source, it won't show up in declarations
// hence add it as well.
if (primaryConstructor.origin == Origin.KOTLIN) {
result = sequenceOf(primaryConstructor).plus(result)
}
}
if (classKind != ClassKind.INTERFACE) {
// check if we need to add a synthetic constructor
val hasConstructor = result.any {
it is KSFunctionDeclaration && it.isConstructor()
}
if (hasConstructor) {
result.memoized()
} else {
(result + KSConstructorSyntheticImpl.getCached(this)).memoized()
}
} else {
result.memoized()
}
}
override val primaryConstructor: KSFunctionDeclaration? by lazy {
ktClassOrObject.primaryConstructor?.let { KSFunctionDeclarationImpl.getCached(it) }
?: if ((classKind == ClassKind.CLASS || classKind == ClassKind.ENUM_CLASS) &&
ktClassOrObject.declarations.none { it is KtSecondaryConstructor }
)
KSConstructorSyntheticImpl.getCached(this) else null
}
override val superTypes: Sequence<KSTypeReference> by lazy {
val resolver = ResolverImpl.instance!!
ktClassOrObject.superTypeListEntries
.asSequence()
.map { KSTypeReferenceImpl.getCached(it.typeReference!!) }
.ifEmpty {
sequenceOf(
KSTypeReferenceSyntheticImpl.getCached(
resolver.builtIns.anyType,
this
)
)
}
.memoized()
}
private val descriptor: ClassDescriptor by lazy {
(ResolverImpl.instance!!.resolveDeclaration(ktClassOrObject) as ClassDescriptor)
}
override fun asType(typeArguments: List<KSTypeArgument>): KSType {
return descriptor.defaultType.replaceTypeArguments(typeArguments)?.let {
getKSTypeCached(it, typeArguments)
} ?: KSErrorType
}
override fun asStarProjectedType(): KSType {
return getKSTypeCached(descriptor.defaultType.replaceArgumentsWithStarProjections())
}
override fun <D, R> accept(visitor: KSVisitor<D, R>, data: D): R {
return visitor.visitClassDeclaration(this, data)
}
}
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