From 5bb5d6cf851f096ef8331ffb4eab62d3b5e6259d Mon Sep 17 00:00:00 2001
From: Tagir Valeev <Tagir.Valeev@jetbrains.com>
Date: Mon, 14 Dec 2020 12:11:02 +0700
Subject: [PATCH] [java-refactoring] Diagnostics for EA-248598

GitOrigin-RevId: 3665e542fe08a255cd9c0b4091718edb042518ec
---
 .../introduceVariable/JavaVariableInplaceIntroducer.java  | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/java/java-impl/src/com/intellij/refactoring/introduceVariable/JavaVariableInplaceIntroducer.java b/java/java-impl/src/com/intellij/refactoring/introduceVariable/JavaVariableInplaceIntroducer.java
index 682b051ed6e8..d26fb7fe7b9d 100644
--- a/java/java-impl/src/com/intellij/refactoring/introduceVariable/JavaVariableInplaceIntroducer.java
+++ b/java/java-impl/src/com/intellij/refactoring/introduceVariable/JavaVariableInplaceIntroducer.java
@@ -23,6 +23,8 @@ import com.intellij.openapi.actionSystem.Shortcut;
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.command.CommandProcessor;
 import com.intellij.openapi.command.WriteCommandAction;
+import com.intellij.openapi.diagnostic.Attachment;
+import com.intellij.openapi.diagnostic.RuntimeExceptionWithAttachments;
 import com.intellij.openapi.editor.Document;
 import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.editor.RangeMarker;
@@ -369,6 +371,12 @@ public class JavaVariableInplaceIntroducer extends AbstractJavaInplaceIntroducer
             LOG.assertTrue(initializer != null);
             final PsiType type = initializer.getType();
             if (((PsiReferenceExpression)parent).resolve() == null && type != null && !type.equals(psiVariable.getType())) {
+              if (LambdaUtil.notInferredType(type)) {
+                throw new RuntimeExceptionWithAttachments(
+                  "Unexpected initializer type: " + type,
+                  new Attachment("variable.txt", psiVariable.getText()), new Attachment("reference.txt", parent.getText()),
+                  new Attachment("file.txt", file.getText()));
+              }
               final PsiElementFactory elementFactory = JavaPsiFacade.getElementFactory(project);
               final PsiExpression castedExpr =
                 elementFactory.createExpressionFromText("((" + type.getCanonicalText() + ")" + referenceExpression.getText() + ")", parent);