[482528] Return an empty IEvaluationResult instead of null

Bug: 482528
Change-Id: I9c4bd6e9d6411a68c086dee82efc71c219511345
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>

1 files changed, 11 insertions, 1 deletions

diff --git a/incubation/org.eclipse.sirius.ui.properties/src/org/eclipse/sirius/ui/properties/internal/SiriusInterpreter.java b/incubation/org.eclipse.sirius.ui.properties/src/org/eclipse/sirius/ui/properties/internal/SiriusInterpreter.java
index e4658253c6..73c9a25489 100644
--- a/incubation/org.eclipse.sirius.ui.properties/src/org/eclipse/sirius/ui/properties/internal/SiriusInterpreter.java
+++ b/incubation/org.eclipse.sirius.ui.properties/src/org/eclipse/sirius/ui/properties/internal/SiriusInterpreter.java
@@ -33,7 +33,17 @@ public class SiriusInterpreter implements IInterpreter {
             }
         }
 
-        IEvaluationResult result = null;
+        IEvaluationResult result = new IEvaluationResult() {
+            @Override
+            public Object getValue() {
+                return null;
+            }
+
+            @Override
+            public Diagnostic getDiagnostic() {
+                return Diagnostic.CANCEL_INSTANCE;
+            }
+        };
 
         Object object = variables.get("self");
         if (object instanceof EObject) {