Fix not generating KotlinLightField for OBJECT$ and INSTANCE$ fields

Fix navigation from Java to such fields
Fix TODO in converter

compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/KotlinLightFieldForDeclaration.kt

@@ -17,13 +17,13 @@
 package org.jetbrains.jet.asJava
 
 import com.intellij.psi.*
-import org.jetbrains.jet.lang.psi.JetProperty
+import org.jetbrains.jet.lang.psi.JetDeclaration
 
 class KotlinLightFieldForDeclaration(
         manager: PsiManager,
-        origin: JetProperty,
+        origin: JetDeclaration,
         field: PsiField,
         containingClass: PsiClass
-) : KotlinLightField<JetProperty, PsiField>(manager, origin, field, containingClass) {
+) : KotlinLightField<JetDeclaration, PsiField>(manager, origin, field, containingClass) {
     override fun copy() = KotlinLightFieldForDeclaration(getManager()!!, getOrigin(), getDelegate(), getContainingClass()!!)
 }

compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/KotlinWrappingLightClass.java

@@ -117,8 +117,8 @@ public abstract class KotlinWrappingLightClass extends AbstractLightClass implem
                     return new KotlinLightEnumConstant(myManager, (JetEnumEntry) declaration, ((PsiEnumConstant) field),
                                                        KotlinWrappingLightClass.this);
                 }
-                if (declaration instanceof JetProperty) {
-                    return new KotlinLightFieldForDeclaration(myManager, (JetProperty) declaration, field, KotlinWrappingLightClass.this);
+                if (declaration != null) {
+                    return new KotlinLightFieldForDeclaration(myManager, declaration, field, KotlinWrappingLightClass.this);
                 }
                 return new LightField(myManager, field, KotlinWrappingLightClass.this);
             }

idea/testData/resolve/referenceInJava/ClassObjectField.java

@@ -0,0 +1,7 @@
+public class ClassObjectField {
+    public static void foo() {
+        k.ClassWithClassObject.OB<caret>JECT$.f();
+    }
+}
+
+// REF: class object of (k).ClassWithClassObject

idea/testData/resolve/referenceInJava/ObjectInstance.java

@@ -0,0 +1,7 @@
+public class ObjectInstance {
+    public static void foo() {
+        k.KotlinObject.INSTANCE<caret>$.f();
+    }
+}
+
+// REF: (k).KotlinObject

idea/testData/resolve/referenceInJava/dependencies.kt

@@ -11,4 +11,14 @@ public enum class EnumClass {
 
 
 public fun topLevelFun() {
+}
+
+public class ClassWithClassObject {
+    class object {
+        fun f() = 1
+    }
+}
+
+public object KotlinObject {
+    fun f() = 1
 }

idea/tests/org/jetbrains/jet/resolve/ReferenceResolveInJavaTestGenerated.java

@@ -44,6 +44,12 @@ public class ReferenceResolveInJavaTestGenerated extends AbstractReferenceResolv
         doTest(fileName);
     }
     
+    @TestMetadata("ClassObjectField.java")
+    public void testClassObjectField() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/resolve/referenceInJava/ClassObjectField.java");
+        doTest(fileName);
+    }
+    
     @TestMetadata("Constructor.java")
     public void testConstructor() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/resolve/referenceInJava/Constructor.java");
@@ -68,6 +74,12 @@ public class ReferenceResolveInJavaTestGenerated extends AbstractReferenceResolv
         doTest(fileName);
     }
     
+    @TestMetadata("ObjectInstance.java")
+    public void testObjectInstance() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/resolve/referenceInJava/ObjectInstance.java");
+        doTest(fileName);
+    }
+    
     @TestMetadata("PackageFacade.java")
     public void testPackageFacade() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/resolve/referenceInJava/PackageFacade.java");

idea/tests/org/jetbrains/jet/testing/ReferenceUtils.java

@@ -20,11 +20,14 @@ import com.intellij.navigation.ItemPresentation;
 import com.intellij.navigation.NavigationItem;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiPackage;
+import com.intellij.psi.util.PsiTreeUtil;
 import com.intellij.util.PathUtil;
 import kotlin.Function1;
 import kotlin.KotlinPackage;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.InTextDirectivesUtils;
+import org.jetbrains.jet.lang.psi.JetClass;
+import org.jetbrains.jet.lang.psi.JetObjectDeclaration;
 import org.jetbrains.jet.plugin.PluginTestCaseBase;
 import org.junit.Assert;
 
@@ -36,6 +39,14 @@ public final class ReferenceUtils {
 
     public static String renderAsGotoImplementation(@NotNull PsiElement element) {
         PsiElement navigationElement = element.getNavigationElement();
+
+        if (navigationElement instanceof JetObjectDeclaration && ((JetObjectDeclaration) navigationElement).isClassObject()) {
+            //default presenter return null for class object
+            JetClass containingClass = PsiTreeUtil.getParentOfType(navigationElement, JetClass.class);
+            assert containingClass != null;
+            return "class object of " + renderAsGotoImplementation(containingClass);
+        }
+
         Assert.assertTrue(navigationElement instanceof NavigationItem);
         ItemPresentation presentation = ((NavigationItem) navigationElement).getPresentation();
 

j2k/src/org/jetbrains/jet/j2k/visitors/ExpressionVisitor.kt

@@ -31,12 +31,12 @@ import org.jetbrains.jet.lang.psi.JetClassOrObject
 import org.jetbrains.jet.lang.psi.psiUtil.getParentByType
 import org.jetbrains.jet.lang.psi.psiUtil.isExtensionDeclaration
 import org.jetbrains.jet.lang.psi.JetPropertyAccessor
-import com.intellij.psi.impl.light.LightField
-import org.jetbrains.jet.lang.resolve.java.JvmAbi
 import org.jetbrains.jet.lang.psi.JetParameter
 import org.jetbrains.jet.lang.psi.JetNamedDeclaration
 import org.jetbrains.jet.lang.resolve.java.JvmPrimitiveType
 import org.jetbrains.jet.lang.resolve.name.FqName
+import org.jetbrains.jet.asJava.KotlinLightField
+import org.jetbrains.jet.lang.psi.JetObjectDeclaration
 
 open class ExpressionVisitor(private val converter: Converter) : JavaElementVisitor() {
     private val typeConverter = converter.typeConverter
@@ -339,11 +339,9 @@ open class ExpressionVisitor(private val converter: Converter) : JavaElementVisi
             identifier = Identifier("size", isNullable).assignNoPrototype()
         }
         else if (qualifier != null) {
-            if (referenceName == JvmAbi.CLASS_OBJECT_FIELD || referenceName == JvmAbi.INSTANCE_FIELD) {
-                if (target is LightField) { //TODO: should be KotlinLightField with check of origin here, see KT-5188
-                    result = converter.convertExpression(qualifier)
-                    return
-                }
+            if (target is KotlinLightField<*, *> && target.getOrigin() is JetObjectDeclaration) {
+                result = converter.convertExpression(qualifier)
+                return
             }
         }
         else {