/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Eclipse Public License (EPL);
* You may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.jikesrvm.compilers.opt.ir;
/**
* This class is used only for the pre-allocated empty enumeration in
* BasicBlockEnumeration. It cannot be an anonymous class in
* BasicBlockEnumeration because BasicBlockEnumeration is an
* interface, and when javadoc sees the anonymous class, it converts
* it into a private member of the interface. It then complains that
* interfaces cannot have private members. This is truly retarded,
* even by Java's low standards.
*/
class EmptyBasicBlockEnumeration implements BasicBlockEnumeration {
public boolean hasMoreElements() { return false; }
public BasicBlock nextElement() { return next(); }
public BasicBlock next() {
throw new java.util.NoSuchElementException("Empty BasicBlock Enumeration");
}
}