org.jetbrains.kotlin.resolve.jvm.checkers.JavaClassOnCompanionChecker.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2016 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.descriptors.ClassDescriptor
import org.jetbrains.kotlin.descriptors.PackageFragmentDescriptor
import org.jetbrains.kotlin.descriptors.PropertyDescriptor
import org.jetbrains.kotlin.descriptors.annotations.Annotations
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
import org.jetbrains.kotlin.types.KotlinTypeFactory
import org.jetbrains.kotlin.types.TypeProjectionImpl
class JavaClassOnCompanionChecker : CallChecker {
override fun check(resolvedCall: ResolvedCall<*>, reportOn: PsiElement, context: CallCheckerContext) {
val descriptor = resolvedCall.resultingDescriptor
if (descriptor !is PropertyDescriptor || descriptor.name.asString() != "javaClass") return
val container = descriptor.containingDeclaration
if (container !is PackageFragmentDescriptor || container.fqName.asString() != "kotlin.jvm") return
val actualType = descriptor.type
val companionObject = actualType.arguments.singleOrNull()?.type?.constructor?.declarationDescriptor as? ClassDescriptor ?: return
if (companionObject.isCompanionObject) {
val containingClass = companionObject.containingDeclaration as ClassDescriptor
val javaLangClass = actualType.constructor.declarationDescriptor as? ClassDescriptor ?: return
val arguments = listOf(TypeProjectionImpl(containingClass.defaultType))
val expectedType = KotlinTypeFactory.simpleType(Annotations.EMPTY, javaLangClass.typeConstructor, arguments,
actualType.isMarkedNullable)
context.trace.report(ErrorsJvm.JAVA_CLASS_ON_COMPANION.on(reportOn, actualType, expectedType))
}
}
}