From f7eddb75a89759750e2ed6d4f520dc1e52adc581 Mon Sep 17 00:00:00 2001
From: "Egor.Ushakov" <egor.ushakov@jetbrains.com>
Date: Thu, 19 Feb 2015 20:42:18 +0300
Subject: [PATCH] prevent IndexNotReadyException in quick evaluate

---
 .../engine/JavaDebuggerEvaluator.java         | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/java/debugger/impl/src/com/intellij/debugger/engine/JavaDebuggerEvaluator.java b/java/debugger/impl/src/com/intellij/debugger/engine/JavaDebuggerEvaluator.java
index f141ea18c630..695fc03b0379 100644
--- a/java/debugger/impl/src/com/intellij/debugger/engine/JavaDebuggerEvaluator.java
+++ b/java/debugger/impl/src/com/intellij/debugger/engine/JavaDebuggerEvaluator.java
@@ -26,6 +26,7 @@ import com.intellij.debugger.impl.EditorTextProvider;
 import com.intellij.debugger.ui.impl.watch.NodeManagerImpl;
 import com.intellij.debugger.ui.impl.watch.WatchItemDescriptor;
 import com.intellij.openapi.editor.Document;
+import com.intellij.openapi.project.IndexNotReadyException;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.Pair;
 import com.intellij.openapi.util.Ref;
@@ -104,14 +105,16 @@ public class JavaDebuggerEvaluator extends XDebuggerEvaluator {
     PsiDocumentManager.getInstance(project).commitAndRunReadAction(new Runnable() {
       @Override
       public void run() {
-        PsiElement elementAtCursor = DebuggerUtilsEx.findElementAt(PsiDocumentManager.getInstance(project).getPsiFile(document), offset);
-        if (elementAtCursor == null) {
-          return;
-        }
-        Pair<PsiElement, TextRange> pair = findExpression(elementAtCursor, sideEffectsAllowed);
-        if (pair != null) {
-          currentRange.set(pair.getSecond());
-        }
+        try {
+          PsiElement elementAtCursor = DebuggerUtilsEx.findElementAt(PsiDocumentManager.getInstance(project).getPsiFile(document), offset);
+          if (elementAtCursor == null) {
+            return;
+          }
+          Pair<PsiElement, TextRange> pair = findExpression(elementAtCursor, sideEffectsAllowed);
+          if (pair != null) {
+            currentRange.set(pair.getSecond());
+          }
+        } catch (IndexNotReadyException ignored) {}
       }
     });
     return currentRange.get();