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Java/RString.java

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+/*   
+RString.java
+ *    
+ *    Copyright (c) 2000, Ted Nelson and Tuomas Lukka
+ *
+ *    You may use and distribute under the terms of either the GNU Lesser
+ *    General Public License, either version 2 of the license or,
+ *    at your choice, any later version. Alternatively, you may use and
+ *    distribute under the terms of the XPL.
+ *
+ *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of 
+ *    the licenses.
+ *
+ *    This software is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the README
+ *    file for more details.
+ *
+ */
+/*
+ * Written by Tuomas Lukka
+ */
+package org.gzigzag;
+import java.awt.*;
+
+/** A potentially referential immutable text string.
+ */
+
+public interface RString {
+String rcsid = "$Id: RString.java,v 1.1 2000/10/20 11:35:29 tjl Exp $";
+
+    String txt();
+    
+    RString substring(int start);
+    RString substring(int start, int end);
+
+    Span[] getSpans();
+    Span[] getSpans(int start);
+    Span[] getSpans(int start, int end);
+
+}