org.jetbrains.kotlin.resolve.calls.checkers.CallReturnsArrayOfNothingChecker.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2015 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.diagnostics.Errors
import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
import org.jetbrains.kotlin.types.KotlinType
import org.jetbrains.kotlin.types.typeUtil.isArrayOfNothing
class CallReturnsArrayOfNothingChecker : CallChecker {
override fun check(resolvedCall: ResolvedCall<*>, reportOn: PsiElement, context: CallCheckerContext) {
if (resolvedCall.resultingDescriptor.returnType.containsArrayOfNothing()) {
context.trace.report(Errors.UNSUPPORTED.on(reportOn, "Array in return type is illegal"))
}
}
private fun KotlinType?.containsArrayOfNothing(): Boolean {
if (this == null || isComputingDeferredType(this)) return false
return isArrayOfNothing() ||
arguments.any { !it.isStarProjection && it.type.containsArrayOfNothing() }
}
}