From 9b2f7ce7e23c5539abaae5b84df079726bd2ce6e Mon Sep 17 00:00:00 2001
From: anna <Anna.Kozlova@jetbrains.com>
Date: Wed, 30 Mar 2011 15:22:49 +0200
Subject: [PATCH] inplace introduce: restore expression if text equals

---
 .../introduceParameter/AbstractInplaceIntroducer.java           | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/java/java-impl/src/com/intellij/refactoring/introduceParameter/AbstractInplaceIntroducer.java b/java/java-impl/src/com/intellij/refactoring/introduceParameter/AbstractInplaceIntroducer.java
index 39ad7194929a..6506cca2fb90 100644
--- a/java/java-impl/src/com/intellij/refactoring/introduceParameter/AbstractInplaceIntroducer.java
+++ b/java/java-impl/src/com/intellij/refactoring/introduceParameter/AbstractInplaceIntroducer.java
@@ -138,7 +138,7 @@ public abstract class AbstractInplaceIntroducer extends VariableInplaceIntroduce
                                                          Comparing.strEqual(psiVariable.getName(), ((PsiReferenceExpression)expression).getReferenceName()))) {
       return (PsiExpression)expression.replace(elementFactory.createExpressionFromText(exprText, psiVariable));
     }
-    return null;
+    return expression != null && expression.isValid() && expression.getText().equals(exprText) ? expression : null;
   }
 
   protected abstract class VisibilityListener implements ChangeListener {