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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.binary
import com.google.devtools.ksp.ExceptionMessage
import com.google.devtools.ksp.KSObjectCache
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.toFunctionKSModifiers
import com.google.devtools.ksp.toKSModifiers
import org.jetbrains.kotlin.descriptors.FunctionDescriptor
import org.jetbrains.kotlin.descriptors.impl.AnonymousFunctionDescriptor
import org.jetbrains.kotlin.load.java.isFromJava
import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameSafe
import org.jetbrains.org.objectweb.asm.Opcodes
class KSFunctionDeclarationDescriptorImpl private constructor(val descriptor: FunctionDescriptor) :
KSFunctionDeclaration,
KSDeclarationDescriptorImpl(descriptor),
KSExpectActual by KSExpectActualDescriptorImpl(descriptor) {
companion object : KSObjectCache<FunctionDescriptor, KSFunctionDeclarationDescriptorImpl>() {
fun getCached(descriptor: FunctionDescriptor) =
cache.getOrPut(descriptor) { KSFunctionDeclarationDescriptorImpl(descriptor) }
}
override fun findOverridee(): KSDeclaration? {
return descriptor?.findClosestOverridee()?.toKSDeclaration()
}
override val typeParameters: List<KSTypeParameter> by lazy {
descriptor.typeParameters.map { KSTypeParameterDescriptorImpl.getCached(it) }
}
override val declarations: Sequence<KSDeclaration> = emptySequence()
override val extensionReceiver: KSTypeReference? by lazy {
val extensionReceiver = descriptor.extensionReceiverParameter?.type
if (extensionReceiver != null) {
KSTypeReferenceDescriptorImpl.getCached(extensionReceiver, origin, this)
} else {
null
}
}
override val functionKind: FunctionKind by lazy {
when {
descriptor.dispatchReceiverParameter == null -> when {
descriptor.isFromJava -> FunctionKind.STATIC
else -> FunctionKind.TOP_LEVEL
}
!descriptor.name.isSpecial && !descriptor.name.asString().isEmpty() -> FunctionKind.MEMBER
descriptor is AnonymousFunctionDescriptor -> FunctionKind.ANONYMOUS
else -> throw IllegalStateException(
"Unable to resolve FunctionKind for ${descriptor.fqNameSafe}, $ExceptionMessage"
)
}
}
override val isAbstract: Boolean by lazy {
this.modifiers.contains(Modifier.ABSTRACT)
}
override val modifiers: Set<Modifier> by lazy {
val modifiers = mutableSetOf<Modifier>()
modifiers.addAll(descriptor.toKSModifiers())
modifiers.addAll(descriptor.toFunctionKSModifiers())
if (this.origin == Origin.JAVA_LIB) {
if (this.jvmAccessFlag and Opcodes.ACC_STRICT != 0)
modifiers.add(Modifier.JAVA_STRICT)
if (this.jvmAccessFlag and Opcodes.ACC_SYNCHRONIZED != 0)
modifiers.add(Modifier.JAVA_SYNCHRONIZED)
}
modifiers
}
override val parameters: List<KSValueParameter> by lazy {
descriptor.valueParameters.map { KSValueParameterDescriptorImpl.getCached(it, this) }
}
override val returnType: KSTypeReference? by lazy {
val returnType = descriptor.returnType
if (returnType == null) {
null
} else {
KSTypeReferenceDescriptorImpl.getCached(returnType, origin, this)
}
}
override fun <D, R> accept(visitor: KSVisitor<D, R>, data: D): R {
return visitor.visitFunctionDeclaration(this, data)
}
override fun asMemberOf(containing: KSType): KSFunction =
ResolverImpl.instance!!.asMemberOf(this, containing)
}
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