Report 'unsupported' on synthetic Java property references

#KT-8575 Open

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/checkers/UnsupportedSyntheticCallableReferenceChecker.kt

@@ -0,0 +1,38 @@
+/*
+ * 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.jvm.checkers
+
+import org.jetbrains.kotlin.descriptors.CallableDescriptor
+import org.jetbrains.kotlin.diagnostics.Errors.UNSUPPORTED
+import org.jetbrains.kotlin.psi.KtCallableReferenceExpression
+import org.jetbrains.kotlin.psi.KtNameReferenceExpression
+import org.jetbrains.kotlin.resolve.calls.checkers.CallChecker
+import org.jetbrains.kotlin.resolve.calls.context.BasicCallResolutionContext
+import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
+import org.jetbrains.kotlin.synthetic.SyntheticJavaPropertyDescriptor
+
+class UnsupportedSyntheticCallableReferenceChecker : CallChecker {
+    override fun <F : CallableDescriptor> check(resolvedCall: ResolvedCall<F>, context: BasicCallResolutionContext) {
+        val expression = context.call.callElement
+        if (expression !is KtNameReferenceExpression || expression.parent !is KtCallableReferenceExpression) return
+
+        // TODO: support references to synthetic Java extension properties (KT-8575)
+        if (resolvedCall.resultingDescriptor is SyntheticJavaPropertyDescriptor) {
+            context.trace.report(UNSUPPORTED.on(expression, "reference to the synthetic extension property for a Java get/set method"))
+        }
+    }
+}

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt

@@ -46,7 +46,8 @@ public object JvmPlatformConfigurator : PlatformConfigurator(
                 JavaAnnotationCallChecker(),
                 TraitDefaultMethodCallChecker(),
                 JavaClassOnCompanionChecker(),
-                ProtectedInSuperClassCompanionCallChecker()
+                ProtectedInSuperClassCompanionCallChecker(),
+                UnsupportedSyntheticCallableReferenceChecker()
         ),
 
         additionalTypeCheckers = listOf(