From 742cbbd4efd588c2647200ef456f8f41b4ff6991 Mon Sep 17 00:00:00 2001
From: Oleg Sukhodolsky <oleg.sukhodolsky@jetbrains.com>
Date: Tue, 16 Apr 2013 17:22:03 +0400
Subject: [PATCH] DocumentationManager.findTargeElement() can be executed when
 index is not ready, so let's catch INRE and return null

---
 .../documentation/DocumentationManager.java       | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationManager.java b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationManager.java
index db25bf50d72a..b1a1548338f6 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationManager.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/documentation/DocumentationManager.java
@@ -528,6 +528,21 @@ public class DocumentationManager extends DockablePopupManager<DocumentationComp
   
   @Nullable
   public PsiElement findTargetElement(final Editor editor, int offset, @Nullable final PsiFile file, PsiElement contextElement) {
+    try {
+      return findTargetElementUnsafe(editor, offset, file, contextElement);
+    }
+    catch (IndexNotReadyException inre) {
+      LOG.warn("Index not ready");
+      LOG.debug(inre);
+      return null;
+    }
+  }
+
+  /**
+   * in case index is not ready will throw IndexNotReadyException
+   */
+  @Nullable
+  private PsiElement findTargetElementUnsafe(final Editor editor, int offset, @Nullable final PsiFile file, PsiElement contextElement) {
     TargetElementUtilBase util = TargetElementUtilBase.getInstance();
     PsiElement element = assertSameProject(getElementFromLookup(editor, file));
     if (element == null && file != null) {