From 31f7c5d9207f606967e8e7a456d3140c81ff9329 Mon Sep 17 00:00:00 2001
From: Raffi Khatchadourian <raffi.khatchadourian@hunter.cuny.edu>
Date: Fri, 5 Jan 2018 13:48:31 -0500
Subject: [PATCH] Workaround #155.

---
 .../cuny/hunter/streamrefactoring/core/analysis/Stream.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/edu.cuny.hunter.streamrefactoring.core/src/edu/cuny/hunter/streamrefactoring/core/analysis/Stream.java b/edu.cuny.hunter.streamrefactoring.core/src/edu/cuny/hunter/streamrefactoring/core/analysis/Stream.java
index 13a9fda4..8e671f72 100644
--- a/edu.cuny.hunter.streamrefactoring.core/src/edu/cuny/hunter/streamrefactoring/core/analysis/Stream.java
+++ b/edu.cuny.hunter.streamrefactoring.core/src/edu/cuny/hunter/streamrefactoring/core/analysis/Stream.java
@@ -589,6 +589,12 @@ private void inferInitialOrdering(EclipseProjectAnalysisEngine<InstanceKey> engi
 			// get the use value number for the stream creation.
 			int valueNumber = getUseValueNumberForCreation(engine);
 
+			if (valueNumber < 0) {
+				LOGGER.warning("Use value number: " + valueNumber + " for stream creation: "
+						+ this.getCreation().getName() + " is invalid. Most likely #155.");
+				throw new UnhandledCaseException("Encountered unhandled case, most likely an embedded stream.");
+			}
+
 			// get the enclosing method node.
 			CGNode node = null;
 			try {