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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
import com.intellij.openapi.components.ServiceManager
import org.jetbrains.uast.UElement
import org.jetbrains.uast.UastFacade
import org.jetbrains.uast.UastLanguagePlugin
import org.jetbrains.uast.kotlin.internal.KotlinUElementWithComments
abstract class KotlinAbstractUElement(
givenParent: UElement?,
) : KotlinUElementWithComments {
protected val languagePlugin: UastLanguagePlugin? by lz {
psi?.let { UastFacade.findPlugin(it) }
}
open val baseResolveProviderService: BaseKotlinUastResolveProviderService by lz {
ServiceManager.getService(BaseKotlinUastResolveProviderService::class.java)
?: error("${BaseKotlinUastResolveProviderService::class.java.name} is not available for ${this::class.simpleName}")
}
final override val uastParent: UElement? by lz {
givenParent ?: convertParent()
}
protected open fun convertParent(): UElement? {
return baseResolveProviderService.convertParent(this)
}
override fun equals(other: Any?): Boolean {
if (other !is UElement) {
return false
}
// See https://youtrack.jetbrains.com/issue/KTIJ-9793 for more details.
if (this.psi == other.psi) {
if (this.psi == null) {
// Two UElements can be different but both have null PSI fields; in that case, do a deeper check
if (this === other) { // same instance: always equal
return true
}
if (this.javaClass !== other.javaClass) { // different types: never equal
return false
}
return this.asSourceString() == other.asSourceString() // source code equality
}
return true
} else {
return false
}
}
override fun hashCode(): Int {
return psi?.hashCode() ?: 0
}
}
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