X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2FNode.java;fp=src%2Fedu%2Fberkeley%2Fsbp%2FNode.java;h=1dcf0509f472ab82256c8e6c59fd327350423e9a;hp=872e37700bd84284f355fff9690e03d415cc09e5;hb=5ac63262248a11cc6412e145794321110327405e;hpb=053eb99c444844015cfdb486b03c55adb0a3cd7f

diff --git a/src/edu/berkeley/sbp/Node.java b/src/edu/berkeley/sbp/Node.java
index 872e377..1dcf050 100644
--- a/src/edu/berkeley/sbp/Node.java
+++ b/src/edu/berkeley/sbp/Node.java
@@ -11,7 +11,8 @@ import java.util.*;
 import java.lang.reflect.*;
 
 class Node
-    implements GraphViz.ToGraphViz {
+    implements IntegerMappable,
+               GraphViz.ToGraphViz {
 
     // GraphViz //////////////////////////////////////////////////////////////////////////////
 
@@ -36,4 +37,11 @@ class Node
     }
     public boolean isTransparent() { return false; }
     public boolean isHidden() { return false; }
+
+    // IntegerMappable ////////////////////////////////////////////////////////////
+
+    private static int node_idx = 0;
+    private final int idx = node_idx++;
+    public int toInt() { return idx; }
+
 }
\ No newline at end of file