From 6cc26bb52f2f2d5a9829901b185ea21acf8126f7 Mon Sep 17 00:00:00 2001
From: Stefan Oehme <stefan.oehme@itemis.de>
Date: Mon, 13 Jul 2015 09:57:42 +0200
Subject: [PATCH] guard preference values provider against missing context

---
 .../eclipse/xtext/preferences/IPreferenceValuesProvider.java   | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plugins/org.eclipse.xtext/src/org/eclipse/xtext/preferences/IPreferenceValuesProvider.java b/plugins/org.eclipse.xtext/src/org/eclipse/xtext/preferences/IPreferenceValuesProvider.java
index 2eefe85bb..6a835d31c 100644
--- a/plugins/org.eclipse.xtext/src/org/eclipse/xtext/preferences/IPreferenceValuesProvider.java
+++ b/plugins/org.eclipse.xtext/src/org/eclipse/xtext/preferences/IPreferenceValuesProvider.java
@@ -38,6 +38,9 @@ public interface IPreferenceValuesProvider {
 
 		@Override
 		public IPreferenceValues getPreferenceValues(Resource context) {
+			if (context == null) {
+				return empty();
+			}
 			PreferenceValuesByLanguage valuesByLanguage = PreferenceValuesByLanguage.findInEmfObject(context.getResourceSet());
 			if (valuesByLanguage == null)
 				return empty();