From 580018e419c1c0d6cdc4f47103be2d7c1aad1eb7 Mon Sep 17 00:00:00 2001
From: Nathanael Sensfelder <SpamShield0@MultiAgentSystems.org>
Date: Mon, 17 Jul 2017 15:53:57 +0200
Subject: Fixes a few dumb mistakes, adds ps example.

---
 cfg-to-paths/src/Node.java | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'cfg-to-paths/src/Node.java')

diff --git a/cfg-to-paths/src/Node.java b/cfg-to-paths/src/Node.java
index 6f9083d..5f82f64 100644
--- a/cfg-to-paths/src/Node.java
+++ b/cfg-to-paths/src/Node.java
@@ -51,6 +51,19 @@ public class Node
       n_a = NODE_FROM_STRING.get(a);
       n_b = NODE_FROM_STRING.get(b);
 
+      if ((n_a == null) || (n_b == null))
+      {
+         System.err.println
+         (
+            "[E] Causality issue: Nodes \""
+            + a
+            + "\" or \""
+            + b
+            + "\" used but not defined."
+         );
+
+         return false;
+      }
       n_a.next_nodes.add(n_b);
 
       return true;
-- 
cgit v1.2.3-70-g09d2