org.jetbrains.kotlin.resolve.checkers.SuspendFunctionAsSupertypeChecker.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2021 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.resolve.checkers
import org.jetbrains.kotlin.builtins.functions.FunctionClassDescriptor
import org.jetbrains.kotlin.builtins.functions.FunctionClassKind
import org.jetbrains.kotlin.config.LanguageFeature
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
import org.jetbrains.kotlin.diagnostics.Errors
import org.jetbrains.kotlin.psi.KtClassOrObject
import org.jetbrains.kotlin.psi.KtDeclaration
import org.jetbrains.kotlin.resolve.descriptorUtil.getAllSuperClassifiers
object SuspendFunctionAsSupertypeChecker : DeclarationChecker {
override fun check(declaration: KtDeclaration, descriptor: DeclarationDescriptor, context: DeclarationCheckerContext) {
if (!context.languageVersionSettings.supportsFeature(LanguageFeature.SuspendFunctionAsSupertype)) return
if (descriptor !is ClassDescriptor) return
val functionalSupertypes = descriptor.getAllSuperClassifiers().filterIsInstance().toList()
if (functionalSupertypes.none {
it.functionKind == FunctionClassKind.SuspendFunction ||
it.functionKind == FunctionClassKind.KSuspendFunction
}
) return
if (functionalSupertypes.any {
it.functionKind == FunctionClassKind.Function ||
it.functionKind == FunctionClassKind.KFunction
}
) {
val reportOn = (declaration as? KtClassOrObject)?.getSuperTypeList() ?: declaration
context.trace.report(Errors.MIXING_SUSPEND_AND_NON_SUSPEND_SUPERTYPES.on(reportOn))
}
}
}