X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2FSequence.java;h=9586f728e1e5df391de200cfd00d1c090b751e2d;hb=2690f6c749f117a103c57d651d89f1b4fbf1316d;hp=fcff530b8db6eaff5009d3943797c80d29d031d2;hpb=0a0227b9180534d2a431f3d6e08a398bde2244c4;p=sbp.git

diff --git a/src/edu/berkeley/sbp/Sequence.java b/src/edu/berkeley/sbp/Sequence.java
index fcff530..9586f72 100644
--- a/src/edu/berkeley/sbp/Sequence.java
+++ b/src/edu/berkeley/sbp/Sequence.java
@@ -35,6 +35,11 @@ public abstract class Sequence extends Element implements Iterable<Element> {
 
     ////////////////////////////////////////////////////////////////////////////////
 
+    Topology toAtom() {
+        if (elements.length!=1) return null;
+        return elements[0].toAtom();
+    }
+
     protected final Element[] elements;
 
     final HashSet<Sequence> needs;