From de68e83ebf38d06bd769029a33dbcd7f9d06d62a Mon Sep 17 00:00:00 2001
From: "Maxim.Medvedev" <maxim.medvedev@jetbrains.com>
Date: Tue, 1 Nov 2011 17:17:01 +0400
Subject: [PATCH] fix NPE on invoking introduce constant in the end of file

---
 .../plugins/groovy/refactoring/GroovyRefactoringUtil.java       | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plugins/groovy/src/org/jetbrains/plugins/groovy/refactoring/GroovyRefactoringUtil.java b/plugins/groovy/src/org/jetbrains/plugins/groovy/refactoring/GroovyRefactoringUtil.java
index f5d5069615f4..09f439f57893 100644
--- a/plugins/groovy/src/org/jetbrains/plugins/groovy/refactoring/GroovyRefactoringUtil.java
+++ b/plugins/groovy/src/org/jetbrains/plugins/groovy/refactoring/GroovyRefactoringUtil.java
@@ -110,6 +110,8 @@ public abstract class GroovyRefactoringUtil {
                                                             final Class<T> klass) {
     PsiElement element1 = file.getViewProvider().findElementAt(startOffset, file.getLanguage());
     PsiElement element2 = file.getViewProvider().findElementAt(endOffset - 1, file.getLanguage());
+    if (element1 == null) return null;
+
     if (TokenSets.WHITE_SPACES_SET.contains(element1.getNode().getElementType())) {
       startOffset = element1.getTextRange().getEndOffset();
       element1 = file.getViewProvider().findElementAt(startOffset, file.getLanguage());