Add tests to repository

tests/java/FlowSet.java

@@ -0,0 +1,46 @@
+// This file is part of the Java Compiler Kit (JKit)
+//
+// The Java Compiler Kit is free software; you can 
+// redistribute it and/or modify it under the terms of the 
+// GNU General Public License as published by the Free Software 
+// Foundation; either version 2 of the License, or (at your 
+// option) any later version.
+//
+// The Java Compiler Kit 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 GNU General Public License 
+// for more details.
+//
+// You should have received a copy of the GNU General Public 
+// License along with the Java Compiler Kit; if not, 
+// write to the Free Software Foundation, Inc., 59 Temple Place, 
+// Suite 330, Boston, MA  02111-1307  USA
+//
+// (C) David James Pearce, 2009. 
+
+package jkit.jil.dfa;
+
+public interface FlowSet {
+
+	/**
+	 * FlowSets must be cloneable to facilitate multiple flows of execution
+	 * from conditionals
+	 * 
+	 * @return A Clone of the current FlowSet
+	 */
+	public Object clone();
+	
+	/**
+     * Computes the least upper bound of this flowset and that provided. <b>NOTE</b>
+     * the join operation has a subtle, yet important, requirement. If the
+     * result of the join must be equivalent to *this* flowset, then it must be
+     * the *same* flowset.
+     * 
+     * @param s
+     *            Another FlowSet to join with this
+     * @return true if this FlowSet has changed due to the computation, false
+     *         otherwise
+     */
+	public FlowSet join(FlowSet s);
+}