org.jetbrains.kotlin.resolve.calls.checkers.ConstructorHeaderCallChecker.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.calls.checkers
import com.intellij.psi.PsiElement
import org.jetbrains.kotlin.descriptors.ClassConstructorDescriptor
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.descriptors.ConstructorDescriptor
import org.jetbrains.kotlin.diagnostics.Errors
import org.jetbrains.kotlin.psi.KtInstanceExpressionWithLabel
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
import org.jetbrains.kotlin.resolve.scopes.LexicalScope
import org.jetbrains.kotlin.resolve.scopes.LexicalScopeKind
import org.jetbrains.kotlin.resolve.scopes.receivers.ImplicitReceiver
import org.jetbrains.kotlin.resolve.scopes.receivers.Receiver
import org.jetbrains.kotlin.resolve.scopes.utils.parentsWithSelf
object ConstructorHeaderCallChecker : CallChecker {
override fun check(resolvedCall: ResolvedCall<*>, reportOn: PsiElement, context: CallCheckerContext) {
val dispatchReceiverClass = resolvedCall.dispatchReceiver.classDescriptorForImplicitReceiver
val extensionReceiverClass = resolvedCall.extensionReceiver.classDescriptorForImplicitReceiver
val callElement = resolvedCall.call.callElement
val labelReferenceClass =
if (callElement is KtInstanceExpressionWithLabel) {
context.trace.get(BindingContext.REFERENCE_TARGET, callElement.instanceReference) as? ClassDescriptor
}
else null
if (dispatchReceiverClass == null && extensionReceiverClass == null && labelReferenceClass == null) return
val classes = setOf(dispatchReceiverClass, extensionReceiverClass, labelReferenceClass)
if (context.scope.parentsWithSelf.any { scope ->
scope is LexicalScope && scope.kind == LexicalScopeKind.CONSTRUCTOR_HEADER &&
(scope.ownerDescriptor as ClassConstructorDescriptor).containingDeclaration in classes
}) {
context.trace.report(Errors.INSTANCE_ACCESS_BEFORE_SUPER_CALL.on(reportOn, resolvedCall.resultingDescriptor))
}
}
}
private val Receiver?.classDescriptorForImplicitReceiver: ClassDescriptor?
get() = (this as? ImplicitReceiver)?.declarationDescriptor as? ClassDescriptor