X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2FAtom.java;h=a9e89814225a8de049de9e2f062ddad58f09f13b;hp=fd91496cfa7fd823b9f9d8ef8117bcc013544f7e;hb=dc9bb3a45ed306e2e35549076842b3e74efecb48;hpb=2cc11837a52505dd9863bcd366240a8f229af294

diff --git a/src/edu/berkeley/sbp/Atom.java b/src/edu/berkeley/sbp/Atom.java
index fd91496..a9e8981 100644
--- a/src/edu/berkeley/sbp/Atom.java
+++ b/src/edu/berkeley/sbp/Atom.java
@@ -1,27 +1,26 @@
+// (C) 2006-2007 all rights reserved; see LICENSE file for BSD-style license
+
 package edu.berkeley.sbp;
-import java.io.*;
-import java.util.*;
-import java.lang.reflect.*;
-import java.lang.ref.*;
 import edu.berkeley.sbp.util.*;
-import edu.berkeley.sbp.*;
-import edu.berkeley.sbp.*;
 
 /**
- *  <font color=green>an element which matches some set of one-token-long input strings</font>.
+ *  <font color=green>
+ *  an element which matches some set of one-token-long input strings
+ *  </font>.
  *
  *  <p>
- *  This class is a topology over itself (yes, that's sort of Frege'd
- *  up) so that Atoms can be intersected and unioned with each other
- *  to result in other Atom<T>'s (rather than raw Topology<T>'s, which
- *  are not Elements).  If you want the latter, use the
- *  getTokenTopology() method.
+ *  This class is a topology over itself (yes, this is impredicative).
+ *  This means that you can call Atom.union(Atom) and get back an Atom.
+ *  If you are interested in the topology of <i>tokens</i> which this
+ *  Atom can match, use the <tt>getTokenTopology()</tt> method.
  *  </p>
  */
-public abstract class Atom<T> extends Element implements Topology<Atom<T>> {
+public abstract class Atom<Token>
+    extends Element
+    implements Topology<Atom<Token>> {
 
     /** the set (topology) of tokens that can match this element */
-    public abstract Topology<T>  getTokenTopology();
+    public abstract Topology<Token>  getTokenTopology();
 
     StringBuffer toString(StringBuffer sb) { sb.append(this); return sb; }