Do not build light classes for decompiled enum entries

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/resolve/IDELightClassGenerationSupport.java

@@ -223,6 +223,9 @@ public class IDELightClassGenerationSupport extends LightClassGenerationSupport
 
     @Nullable
     private static PsiClass getLightClassForDecompiledClassOrObject(@NotNull JetClassOrObject decompiledClassOrObject) {
+        if (decompiledClassOrObject instanceof JetEnumEntry) {
+            return null;
+        }
         JetFile containingJetFile = decompiledClassOrObject.getContainingJetFile();
         if (!containingJetFile.isCompiled()) {
             return null;
@@ -248,7 +251,7 @@ public class IDELightClassGenerationSupport extends LightClassGenerationSupport
         while (iterator.hasNext()) {
             Name name = iterator.next();
             PsiClass innerClass = current.findInnerClassByName(name.asString(), false);
-            assert innerClass != null : "Could not find corresponding inner/nested class " + relativeFqName + "in class " + decompiledClassOrObject.getName() + "\n" +
+            assert innerClass != null : "Could not find corresponding inner/nested class " + relativeFqName + " in class " + decompiledClassOrObject.getFqName() + "\n" +
                                         "File: " + decompiledClassOrObject.getContainingJetFile().getVirtualFile().getName();
             current = innerClass;
         }

idea/testData/findUsages/libraryUsages/_library/library/library.kt

@@ -69,4 +69,9 @@ fun test() {
     }
 
     LocalClass(localClassProperty = 1).localClassProperty
+}
+
+enum class E {
+    ONE,
+    TWO
 }

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryEnumEntryUsages.0.kt

@@ -0,0 +1,10 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.JetEnumEntry
+// FIND_BY_REF
+
+package usages
+
+import library.E
+
+fun main(args: Array<String>) {
+    E.<caret>ONE
+}

idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryEnumEntryUsages.results.txt

@@ -0,0 +1 @@
+Value read (9: 7) E.ONE

idea/tests/org/jetbrains/kotlin/findUsages/KotlinFindUsagesWithLibraryTestGenerated.java

@@ -100,6 +100,12 @@ public class KotlinFindUsagesWithLibraryTestGenerated extends AbstractKotlinFind
             doTest(fileName);
         }
 
+        @TestMetadata("LibraryEnumEntryUsages.0.kt")
+        public void testLibraryEnumEntryUsages() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryEnumEntryUsages.0.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("LibraryFunctionUsages.0.kt")
         public void testLibraryFunctionUsages() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("idea/testData/findUsages/libraryUsages/kotlinLibrary/LibraryFunctionUsages.0.kt");