/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache\@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation, and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/*
 * $Log: CMBinaryOp.hpp,v $
 * Revision 1.4  2003/05/16 21:43:20  knoaman
 * Memory manager implementation: Modify constructors to pass in the memory manager.
 *
 * Revision 1.3  2003/05/15 18:48:27  knoaman
 * Partial implementation of the configurable memory manager.
 *
 * Revision 1.2  2002/11/04 14:54:58  tng
 * C++ Namespace Support.
 *
 * Revision 1.1.1.1  2002/02/01 22:22:37  peiyongz
 * sane_include
 *
 * Revision 1.3  2001/05/11 13:27:16  tng
 * Copyright update.
 *
 * Revision 1.2  2001/02/16 14:58:57  tng
 * Schema: Update Makefile, configure files, project files, and include path in
 * certain cpp files because of the move of the common Content Model files.  By Pei Yong Zhang.
 *
 * Revision 1.1  2001/02/16 14:17:29  tng
 * Schema: Move the common Content Model files that are shared by DTD
 * and schema from 'DTD' folder to 'common' folder.  By Pei Yong Zhang.
 *
 * Revision 1.4  2000/03/02 19:55:37  roddey
 * This checkin includes many changes done while waiting for the
 * 1.1.0 code to be finished. I can't list them all here, but a list is
 * available elsewhere.
 *
 * Revision 1.3  2000/02/24 20:16:47  abagchi
 * Swat for removing Log from API docs
 *
 * Revision 1.2  2000/02/09 21:42:36  abagchi
 * Copyright swat
 *
 * Revision 1.1.1.1  1999/11/09 01:03:02  twl
 * Initial checkin
 *
 * Revision 1.2  1999/11/08 20:45:35  rahul
 * Swat for adding in Product name and CVS comment log variable.
 *
 */

#if !defined(CMBINARYOP_HPP)
#define CMBINARYOP_HPP

#include <xercesc/validators/common/CMNode.hpp>

XERCES_CPP_NAMESPACE_BEGIN

class CMStateSet;

class CMBinaryOp : public CMNode
{
public :
    // -----------------------------------------------------------------------
    //  Constructors
    // -----------------------------------------------------------------------
    CMBinaryOp
    (
        const ContentSpecNode::NodeTypes type
        ,     CMNode* const              leftToAdopt
        ,     CMNode* const              rightToAdopt
        ,     MemoryManager* const       manager = XMLPlatformUtils::fgMemoryManager
    );
    ~CMBinaryOp();


    // -----------------------------------------------------------------------
    //  Getter methods
    // -----------------------------------------------------------------------
    const CMNode* getLeft() const;
    CMNode* getLeft();
    const CMNode* getRight() const;
    CMNode* getRight();


    // -----------------------------------------------------------------------
    //  Implementation of the public CMNode virtual interface
    // -----------------------------------------------------------------------
    bool isNullable() const;


protected :
    // -----------------------------------------------------------------------
    //  Implementation of the protected CMNode virtual interface
    // -----------------------------------------------------------------------
    void calcFirstPos(CMStateSet& toSet) const;
    void calcLastPos(CMStateSet& toSet) const;


private :
    // -----------------------------------------------------------------------
    //  Private data members
    //
    //  fLeftChild
    //  fRightChild
    //      These are the references to the two nodes that are on either side
    //      of this binary operation. We own them both.
    // -----------------------------------------------------------------------
    CMNode* fLeftChild;
    CMNode* fRightChild;
};

XERCES_CPP_NAMESPACE_END

#endif
