Fix resolution of Kotlin enums' values() and valueOf() from Java

Use the code from PsiClassImpl / ClsClassImpl, which for some reason is absent
in AbstractLightClass

 #KT-5591 Fixed

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

@@ -17,16 +17,14 @@
 package org.jetbrains.jet.asJava;
 
 import com.intellij.lang.Language;
-import com.intellij.psi.PsiClass;
-import com.intellij.psi.PsiField;
-import com.intellij.psi.PsiManager;
-import com.intellij.psi.PsiMethod;
+import com.intellij.psi.*;
 import com.intellij.psi.impl.PsiClassImplUtil;
 import com.intellij.psi.impl.light.AbstractLightClass;
 import com.intellij.psi.impl.light.LightField;
 import com.intellij.psi.impl.light.LightMethod;
 import com.intellij.psi.impl.source.ClassInnerStuffCache;
 import com.intellij.psi.impl.source.PsiExtensibleClass;
+import com.intellij.psi.scope.PsiScopeProcessor;
 import com.intellij.util.Function;
 import com.intellij.util.containers.ContainerUtil;
 import org.jetbrains.annotations.NotNull;
@@ -114,8 +112,8 @@ public abstract class KotlinWrappingLightClass extends AbstractLightClass implem
             public PsiField fun(PsiField field) {
                 JetDeclaration declaration = ClsWrapperStubPsiFactory.getOriginalDeclaration(field);
                 return declaration instanceof JetProperty
-                        ? new KotlinLightField(myManager, (JetProperty) declaration, field, KotlinWrappingLightClass.this)
-                        : new LightField(myManager, field, KotlinWrappingLightClass.this);
+                       ? new KotlinLightField(myManager, (JetProperty) declaration, field, KotlinWrappingLightClass.this)
+                       : new LightField(myManager, field, KotlinWrappingLightClass.this);
             }
         });
     }
@@ -134,6 +132,17 @@ public abstract class KotlinWrappingLightClass extends AbstractLightClass implem
         });
     }
 
+    @Override
+    public boolean processDeclarations(
+            @NotNull PsiScopeProcessor processor, @NotNull ResolveState state, PsiElement lastParent, @NotNull PsiElement place
+    ) {
+        if (isEnum()) {
+            if (!PsiClassImplUtil.processDeclarationsInEnum(processor, state, myInnersCache)) return false;
+        }
+
+        return super.processDeclarations(processor, state, lastParent, place);
+    }
+
     @Override
     public String getText() {
         JetClassOrObject origin = getOrigin();

idea/testData/kotlinAndJavaChecker/EnumAutoGeneratedMethods.java

@@ -0,0 +1,8 @@
+package test;
+
+class EnumAutoGeneratedMethods {
+    void foo() {
+        TestEnum.values();
+        assert TestEnum.valueOf("first") == TestEnum.first;
+    }
+}

idea/testData/kotlinAndJavaChecker/EnumAutoGeneratedMethods.kt

@@ -0,0 +1,5 @@
+package test
+
+enum class TestEnum {
+    first second third
+}

idea/tests/org/jetbrains/jet/checkers/KotlinAndJavaCheckerTest.java

@@ -19,7 +19,6 @@ package org.jetbrains.jet.checkers;
 import com.intellij.codeInspection.LocalInspectionTool;
 import com.intellij.codeInspection.nullable.NullableStuffInspection;
 import com.intellij.openapi.projectRoots.Sdk;
-import com.intellij.openapi.vfs.newvfs.impl.VirtualDirectoryImpl;
 import com.siyeh.ig.bugs.StaticCallOnSubclassInspection;
 import com.siyeh.ig.bugs.StaticFieldReferenceOnSubclassInspection;
 import org.jetbrains.jet.JetTestCaseBuilder;
@@ -73,4 +72,8 @@ public class KotlinAndJavaCheckerTest extends KotlinDaemonAnalyzerTestCase {
     public void testImplementedMethodsFromTraits() throws Exception {
         doTest(true, true, "ImplementedMethodsFromTraits.java", "ImplementedMethodsFromTraits.kt");
     }
+
+    public void testEnumAutoGeneratedMethods() throws Exception {
+        doTest(true, true, "EnumAutoGeneratedMethods.java", "EnumAutoGeneratedMethods.kt");
+    }
 }