X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2FUnion.java;h=94c1fc9653503356405b272cace0c3d6cd4820cd;hp=f1f65b1d3ad5f5f87fb4a02cd0e436f6332caeb9;hb=a343367c544296dd6364f5c66e786e5655369acb;hpb=8a5250c184672495fae152e096b2e800749cd0db

diff --git a/src/edu/berkeley/sbp/Union.java b/src/edu/berkeley/sbp/Union.java
index f1f65b1..94c1fc9 100644
--- a/src/edu/berkeley/sbp/Union.java
+++ b/src/edu/berkeley/sbp/Union.java
@@ -1,3 +1,5 @@
+// Copyright 2006 all rights reserved; see LICENSE file for BSD-style license
+
 package edu.berkeley.sbp;
 import edu.berkeley.sbp.util.*;
 import edu.berkeley.sbp.*;
@@ -17,13 +19,14 @@ import java.lang.ref.*;
  */
 public class Union extends Element implements Iterable<Sequence> {
 
-    private final String name;
+    private final String  name;
     private final boolean synthetic;
     private boolean viewed = false;
 
     private final List<Sequence> alternatives = new ArrayList<Sequence>();
 
     public Union(String name) { this(name, false); }
+    public Union(String name, Sequence s) { this(name, false); add(s); }
 
     /**
      *  Since every cycle in a non-degenerate grammar contains at
@@ -85,10 +88,9 @@ public class Union extends Element implements Iterable<Sequence> {
 
     // Display //////////////////////////////////////////////////////////////////////////////
 
-    public String getName() {
-        if (name != null) return name;
-        return "(anon_union)";
-    }
+    boolean isSynthetic() { return synthetic; }
+    String getName()      { return name==null ? "(anon_union)" : name; }
+
     public String toString() {
         viewed = true;
         if (name != null) return name;