KT-11952 J2K: Assertion failed in PropertyDetectionCache.get on conversion of access to Java constant of anonymous type

#KT-11952 Fixed

j2k/src/org/jetbrains/kotlin/j2k/Converter.kt

@@ -451,6 +451,8 @@ class Converter private constructor(
     }
 
     fun shouldDeclareVariableType(variable: PsiVariable, type: Type, canChangeType: Boolean): Boolean {
+        assert(inConversionScope(variable))
+
         val initializer = variable.initializer
         if (initializer == null || initializer.isNullLiteral()) return true
         if (initializer.type is PsiPrimitiveType && type is PrimitiveType) {

j2k/src/org/jetbrains/kotlin/j2k/ExpressionConverter.kt

@@ -535,6 +535,8 @@ class DefaultExpressionConverter : JavaElementVisitor(), ExpressionConverter {
         fun isNullable(target: PsiVariable): Boolean {
             if (typeConverter.variableNullability(target).isNullable(codeConverter.settings)) return true
 
+            if (!converter.inConversionScope(target)) return false
+
             val canChangeType = when (target) {
                 is PsiLocalVariable -> codeConverter.canChangeType(target)
                 is PsiField -> target.hasModifierProperty(PsiModifier.PRIVATE)

j2k/testData/multiFile/KT11952/Foo.java

@@ -0,0 +1,7 @@
+import test.Bar;
+
+public class Foo {
+    public static void foo() {
+        Object o = Bar.SET;
+    }
+}

j2k/testData/multiFile/KT11952/Foo.kt

@@ -0,0 +1,7 @@
+import test.Bar
+
+object Foo {
+    fun foo() {
+        val o = Bar.SET
+    }
+}

j2k/testData/multiFile/KT11952/external/Bar.java

@@ -0,0 +1,8 @@
+package test;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public interface Bar {
+    Set<String> SET = new HashSet<String>() { };
+}

j2k/testData/multiFile/KT11952/external/Bar.java.expected

@@ -0,0 +1,8 @@
+package test;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public interface Bar {
+    Set<String> SET = new HashSet<String>() { };
+}

j2k/tests/org/jetbrains/kotlin/j2k/JavaToKotlinConverterMultiFileTestGenerated.java

@@ -47,6 +47,12 @@ public class JavaToKotlinConverterMultiFileTestGenerated extends AbstractJavaToK
         doTest(fileName);
     }
 
+    @TestMetadata("KT11952")
+    public void testKT11952() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("j2k/testData/multiFile/KT11952/");
+        doTest(fileName);
+    }
+
     @TestMetadata("ProtectedVisibility")
     public void testProtectedVisibility() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("j2k/testData/multiFile/ProtectedVisibility/");