KT-6676 Show enum ordinal in quickdoc (#1165)

KT-6676: Show enum ordinal in quickdoc

 #KT-6676 fixed

idea/src/org/jetbrains/kotlin/idea/KotlinQuickDocumentationProvider.kt

@@ -194,6 +194,18 @@ class KotlinQuickDocumentationProvider : AbstractDocumentationProvider() {
                 // element is not an KtReferenceExpression, but KtClass of enum
                 return renderEnum(element, originalElement, quickNavigation)
             }
+            else if (element is KtEnumEntry && !quickNavigation) {
+                val ordinal = element.containingClassOrObject?.getBody()?.run { getChildrenOfType<KtEnumEntry>().indexOf(element) }
+
+                return buildString {
+                    append(renderKotlinDeclaration(element, quickNavigation))
+                    ordinal?.let {
+                        wrapTag("b") {
+                            append("Enum constant ordinal: $ordinal")
+                        }
+                    }
+                }
+            }
             else if (element is KtDeclaration) {
                 return renderKotlinDeclaration(element, quickNavigation)
             }

idea/testData/editor/quickDoc/OnEnumEntry.kt

@@ -0,0 +1,7 @@
+enum class TestEnum{
+    A, B, <caret>C
+}
+
+
+
+//INFO: <pre><b>enum entry</b> C <i>defined in</i> TestEnum</pre><b>Enum constant ordinal: 2</b>

idea/testData/editor/quickDoc/OnEnumEntryUsage.kt

@@ -0,0 +1,9 @@
+enum class TestEnum{
+    A, B, C
+}
+
+fun test() {
+    TestEnum.<caret>C
+}
+
+//INFO: <pre><b>enum entry</b> C <i>defined in</i> TestEnum</pre><b>Enum constant ordinal: 2</b>

idea/tests/org/jetbrains/kotlin/idea/editor/quickDoc/QuickDocProviderTestGenerated.java

@@ -180,6 +180,18 @@ public class QuickDocProviderTestGenerated extends AbstractQuickDocProviderTest
         doTest(fileName);
     }
 
+    @TestMetadata("OnEnumEntry.kt")
+    public void testOnEnumEntry() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/editor/quickDoc/OnEnumEntry.kt");
+        doTest(fileName);
+    }
+
+    @TestMetadata("OnEnumEntryUsage.kt")
+    public void testOnEnumEntryUsage() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/editor/quickDoc/OnEnumEntryUsage.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("OnEnumUsage.kt")
     public void testOnEnumUsage() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/testData/editor/quickDoc/OnEnumUsage.kt");