Handle modifiers correctly in "val to object" #KT-18919 Fixed

idea/src/org/jetbrains/kotlin/idea/intentions/ValToObjectIntention.kt

@@ -41,14 +41,13 @@ class ValToObjectIntention : SelfTargetingIntention<KtProperty>(KtProperty::clas
     }
 
     override fun applyTo(element: KtProperty, editor: Editor?) {
-        val modifier = element.visibilityModifier()
         val name = element.name ?: return
         val objectLiteral = element.initializer as? KtObjectLiteralExpression ?: return
         val declaration = objectLiteral.objectDeclaration
         val superTypeList = declaration.getSuperTypeList()
         val body = declaration.getBody() ?: return
 
-        val prefix = modifier?.text?.plus(" ") ?: ""
+        val prefix = element.modifierList?.text?.plus(" ") ?: ""
         val superTypesText = superTypeList?.text?.plus(" ") ?: ""
 
         val replacementText = "${prefix}object $name: $superTypesText${body.text}"

idea/testData/intentions/valToObject/expected.kt

@@ -0,0 +1,6 @@
+// SKIP_ERRORS_BEFORE
+// SKIP_ERRORS_AFTER
+
+expect interface EmptyInterface
+
+expect val <caret>ofInterface = object : EmptyInterface{}

idea/testData/intentions/valToObject/expected.kt.after

@@ -0,0 +1,6 @@
+// SKIP_ERRORS_BEFORE
+// SKIP_ERRORS_AFTER
+
+expect interface EmptyInterface
+
+expect object ofInterface : EmptyInterface {}

idea/tests/org/jetbrains/kotlin/idea/intentions/IntentionTestGenerated.java

@@ -16214,6 +16214,12 @@ public class IntentionTestGenerated extends AbstractIntentionTest {
             doTest(fileName);
         }
 
+        @TestMetadata("expected.kt")
+        public void testExpected() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/testData/intentions/valToObject/expected.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("getter.kt")
         public void testGetter() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/testData/intentions/valToObject/getter.kt");