org.jetbrains.kotlin.resolve.jvm.checkers.InterfaceDefaultMethodCallChecker.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2017 JetBrains s.r.o.
*
* 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 org.jetbrains.kotlin.resolve.jvm.checkers
import com.intellij.psi.PsiElement
import org.jetbrains.kotlin.config.JvmTarget
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.descriptors.ClassifierDescriptor
import org.jetbrains.kotlin.descriptors.FunctionDescriptor
import org.jetbrains.kotlin.load.java.descriptors.JavaCallableMemberDescriptor
import org.jetbrains.kotlin.resolve.DescriptorUtils
import org.jetbrains.kotlin.resolve.DescriptorUtils.*
import org.jetbrains.kotlin.resolve.calls.callResolverUtil.getSuperCallExpression
import org.jetbrains.kotlin.resolve.calls.checkers.CallChecker
import org.jetbrains.kotlin.resolve.calls.checkers.CallCheckerContext
import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
import org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm
class InterfaceDefaultMethodCallChecker(val jvmTarget: JvmTarget) : CallChecker {
override fun check(resolvedCall: ResolvedCall<*>, reportOn: PsiElement, context: CallCheckerContext) {
val supportDefaults = jvmTarget == JvmTarget.JVM_1_8
val descriptor = resolvedCall.resultingDescriptor as? FunctionDescriptor ?: return
if (!supportDefaults &&
isStaticDeclaration(descriptor) &&
isInterface(descriptor.containingDeclaration) &&
descriptor is JavaCallableMemberDescriptor) {
context.trace.report(ErrorsJvm.INTERFACE_STATIC_METHOD_CALL_FROM_JAVA6_TARGET.on(reportOn))
}
if (getSuperCallExpression(resolvedCall.call) == null) return
if (!isInterface(descriptor.original.containingDeclaration)) return
val realDescriptor = unwrapFakeOverride(descriptor)
val realDescriptorOwner = realDescriptor.containingDeclaration as? ClassDescriptor ?: return
if (isInterface(realDescriptorOwner) && realDescriptor is JavaCallableMemberDescriptor) {
val classifier = DescriptorUtils.getParentOfType(context.scope.ownerDescriptor, ClassifierDescriptor::class.java)
//is java interface default method called from trait
if (classifier != null && DescriptorUtils.isInterface(classifier)) {
context.trace.report(ErrorsJvm.INTERFACE_CANT_CALL_DEFAULT_METHOD_VIA_SUPER.on(reportOn))
}
else if (!supportDefaults) {
context.trace.report(ErrorsJvm.DEFAULT_METHOD_CALL_FROM_JAVA6_TARGET.on(reportOn))
}
}
}
}