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/* *******************************************************************
* Copyright (c) 1999-2001 Xerox Corporation,
* 2002 Palo Alto Research Center, Incorporated (PARC).
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Common Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* Xerox/PARC initial implementation
* ******************************************************************/
package org.aspectj.testing.compare;
/**
* Visit a node-pair in the trees,
* signalling whether to continue traversal.
*/
public interface GenericTreeNodesVisitorI {
/**
* Visit nodes in parallel trees.
* One (but not both) of the input nodes may be null.
* @param lhs the GenericTreeNode on the left-hand-side of a binary operation
* (may be null)
* @param lhs the GenericTreeNode on the right-hand-side of a binary operation
* (may be null)
* @return true if should continue visiting
*/
public boolean visit(GenericTreeNode lhs, GenericTreeNode rhs);
}
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