checkpoint

[sbp.git] / src / edu / berkeley / sbp / chr / CharAtom.java

diff --git a/src/edu/berkeley/sbp/chr/CharAtom.java b/src/edu/berkeley/sbp/chr/CharAtom.java
index 89a45ad..f2f8e62 100644 (file)
--- a/src/edu/berkeley/sbp/chr/CharAtom.java
+++ b/src/edu/berkeley/sbp/chr/CharAtom.java
@@ -10,6 +10,8 @@ import edu.berkeley.sbp.Input.Location;
 
 public class CharAtom extends Atom<Character> {
 
+    public StringBuffer toString(StringBuffer sb) { sb.append(this); return sb; }
+
     public CharAtom() { this(new CharTopology()); }
     public CharAtom(char a) { this(a,a); }
     public CharAtom(char a, char b) { this(new CharTopology(a, b)); }
@@ -26,7 +28,6 @@ public class CharAtom extends Atom<Character> {
     public static final Atom braces     = new CharAtom(left,right)   { public String toString() { return "[{}]"; } };
 
     public static Atom set(Range.Set r) { return new CharAtom(new CharTopology(r)); }
-
     public String toString() { return t.toString(); }
 
     /** returns an element which exactly matches the string given */
@@ -55,7 +56,7 @@ public class CharAtom extends Atom<Character> {
 
     public Topology<Atom<Character>>       unwrap() { return this; }
     public Topology<Atom<Character>>       empty()  { return new CharAtom(); }
-    public Topology<Character>             underlying()  { return top(); }
+    public Topology<Character>             getTokenTopology()  { return top(); }
 
     public boolean           contains(Atom<Character> v) { return top().containsAll(((CharAtom)v).top()); }
     public boolean           disjoint(Topology<Atom<Character>> t) { return top().disjoint(((CharAtom)t).top()); }