Add a quickfix for warning on ambiguously annotated expression

#KT-14238 Fixed

idea/src/org/jetbrains/kotlin/idea/quickfix/AddNewLineAfterAnnotationsFix.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2010-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.idea.quickfix
+
+import com.intellij.openapi.editor.Editor
+import com.intellij.openapi.project.Project
+import org.jetbrains.kotlin.diagnostics.Diagnostic
+import org.jetbrains.kotlin.idea.quickfix.quickfixUtil.createIntentionForFirstParentOfType
+import org.jetbrains.kotlin.psi.KtAnnotatedExpression
+import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.psi.KtPsiFactory
+
+class AddNewLineAfterAnnotationsFix(element: KtAnnotatedExpression) : KotlinQuickFixAction<KtAnnotatedExpression>(element) {
+    override fun getText() = "Add new line after annotations"
+    override fun getFamilyName() = text
+
+    override fun invoke(project: Project, editor: Editor?, file: KtFile) {
+        val baseExpression = element.baseExpression ?: return
+        val annotationsText = element.text.substring(0, baseExpression.startOffsetInParent)
+        val newExpression = KtPsiFactory(project).createBlock(annotationsText + "\n" + baseExpression.text).statements[0]
+        element.replace(newExpression)
+    }
+
+    companion object Factory : KotlinSingleIntentionActionFactory() {
+        override fun createAction(diagnostic: Diagnostic) =
+                diagnostic.createIntentionForFirstParentOfType(::AddNewLineAfterAnnotationsFix)
+    }
+}

idea/src/org/jetbrains/kotlin/idea/quickfix/QuickFixRegistrar.kt

@@ -432,5 +432,7 @@ class QuickFixRegistrar : QuickFixContributor {
         TOO_MANY_CHARACTERS_IN_CHARACTER_LITERAL.registerFactory(TooLongCharLiteralToStringFix)
 
         UNUSED_VALUE.registerFactory(RemoveUnusedValueFix)
+
+        ANNOTATIONS_ON_BLOCK_LEVEL_EXPRESSION_ON_THE_SAME_LINE.registerFactory(AddNewLineAfterAnnotationsFix)
     }
 }