/*
 * Copyright 2010-2022 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.references.fe10

import org.jetbrains.kotlin.references.fe10.base.KtFe10Reference
import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
import org.jetbrains.kotlin.descriptors.VariableDescriptorWithAccessors
import org.jetbrains.kotlin.descriptors.accessors
import org.jetbrains.kotlin.idea.references.KtPropertyDelegationMethodsReference
import org.jetbrains.kotlin.psi.KtImportAlias
import org.jetbrains.kotlin.psi.KtProperty
import org.jetbrains.kotlin.psi.KtPropertyDelegate
import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
import org.jetbrains.kotlin.resolve.BindingContext

internal class KtFe10PropertyDelegationMethodsReference(
    expression: KtPropertyDelegate
) : KtPropertyDelegationMethodsReference(expression), KtFe10Reference {

    override fun getTargetDescriptors(context: BindingContext): Collection<DeclarationDescriptor> {
        val property = expression.getStrictParentOfType<KtProperty>() ?: return emptyList()
        val descriptor = context[BindingContext.DECLARATION_TO_DESCRIPTOR, property] as? VariableDescriptorWithAccessors
            ?: return emptyList()
        return descriptor.accessors.mapNotNull { accessor ->
            context.get(BindingContext.DELEGATED_PROPERTY_RESOLVED_CALL, accessor)?.candidateDescriptor
        } + listOfNotNull(context.get(BindingContext.PROVIDE_DELEGATE_RESOLVED_CALL, descriptor)?.candidateDescriptor)
    }

    override fun isReferenceToImportAlias(alias: KtImportAlias): Boolean {
        return super<KtFe10Reference>.isReferenceToImportAlias(alias)
    }
}